TY  - CONF
AU  - Pešić, Jelica
AU  - Božić, Ivan
AU  - Ristić, Bogdan
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7256
AB  - U prioritetne ciljeve revitalizacija hidroelektrana nakon njihove višedecenijske
eksploatacije svrstavaju se poboljšanje karakteristika hidrauličnih turbina i modernizacija
hidromašinske opreme i pomoćnih sistema. Poboljšanje energetske efikasnosti zajedno sa
povećanjem stepena operativnosti, raspoloživosti i pouzdanosti omogućuju novi eksploatacioni vek
hidroagregata. Pristupi i jasno definisane smernice revitalizacije hidrauličnih turbina proizilaze iz
odluka koje se donose na osnovu pređašnjih iskustva i relevantnih standarda, a nakon utvrđivanja
pouzdanih podataka o postojećem stanju opreme i energetskih karakteristika. U ovom radu je na
primeru HE Bistrica, koja je u predrevitalizacionom statusu, izvršena detaljna analiza energetskih
karakteristika postojeće Fransis turbine primenom savremenih numeričkih simulacija. Numerički
rezultati su validirani pomoću postojećih eksperimentalnih rezultata koji su dobijeni terenskim
ispitivanjima na prototipu. Prikazani rezultati predstavljaju osnovu za dalje definisanje mogućih
modifikacija ili zamene pojedinih komponenata u strujnom prostoru postojeće hidraulične turbine.
PB  - Society of Thermal Engineers of Serbia
C3  - INTERNATIONAL CONFERENCE POWER PLANTS 2023
T1  - NUMERICAL ANALYSIS OF THE EXISTING FRANCIS TURBINE ENERGY CHARACTERISTICS AT THE HPP BISTRICA [НУМЕРИЧКА АНАЛИЗА ЕНЕРГЕТСКИХ КАРАКТЕРИСТИКА ПОСТОЈЕЋЕ ФРАНСИС ТУРБИНЕ У ХЕ БИСТРИЦА]
EP  - 844
SP  - 836
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7256
ER  - 

@conference{
author = "Pešić, Jelica and Božić, Ivan and Ristić, Bogdan",
year = "2023",
abstract = "U prioritetne ciljeve revitalizacija hidroelektrana nakon njihove višedecenijske
eksploatacije svrstavaju se poboljšanje karakteristika hidrauličnih turbina i modernizacija
hidromašinske opreme i pomoćnih sistema. Poboljšanje energetske efikasnosti zajedno sa
povećanjem stepena operativnosti, raspoloživosti i pouzdanosti omogućuju novi eksploatacioni vek
hidroagregata. Pristupi i jasno definisane smernice revitalizacije hidrauličnih turbina proizilaze iz
odluka koje se donose na osnovu pređašnjih iskustva i relevantnih standarda, a nakon utvrđivanja
pouzdanih podataka o postojećem stanju opreme i energetskih karakteristika. U ovom radu je na
primeru HE Bistrica, koja je u predrevitalizacionom statusu, izvršena detaljna analiza energetskih
karakteristika postojeće Fransis turbine primenom savremenih numeričkih simulacija. Numerički
rezultati su validirani pomoću postojećih eksperimentalnih rezultata koji su dobijeni terenskim
ispitivanjima na prototipu. Prikazani rezultati predstavljaju osnovu za dalje definisanje mogućih
modifikacija ili zamene pojedinih komponenata u strujnom prostoru postojeće hidraulične turbine.",
publisher = "Society of Thermal Engineers of Serbia",
journal = "INTERNATIONAL CONFERENCE POWER PLANTS 2023",
title = "NUMERICAL ANALYSIS OF THE EXISTING FRANCIS TURBINE ENERGY CHARACTERISTICS AT THE HPP BISTRICA [НУМЕРИЧКА АНАЛИЗА ЕНЕРГЕТСКИХ КАРАКТЕРИСТИКА ПОСТОЈЕЋЕ ФРАНСИС ТУРБИНЕ У ХЕ БИСТРИЦА]",
pages = "844-836",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7256"
}

Pešić, J., Božić, I.,& Ristić, B.. (2023). NUMERICAL ANALYSIS OF THE EXISTING FRANCIS TURBINE ENERGY CHARACTERISTICS AT THE HPP BISTRICA [НУМЕРИЧКА АНАЛИЗА ЕНЕРГЕТСКИХ КАРАКТЕРИСТИКА ПОСТОЈЕЋЕ ФРАНСИС ТУРБИНЕ У ХЕ БИСТРИЦА]. in INTERNATIONAL CONFERENCE POWER PLANTS 2023
Society of Thermal Engineers of Serbia., 836-844.
https://hdl.handle.net/21.15107/rcub_machinery_7256

Pešić J, Božić I, Ristić B. NUMERICAL ANALYSIS OF THE EXISTING FRANCIS TURBINE ENERGY CHARACTERISTICS AT THE HPP BISTRICA [НУМЕРИЧКА АНАЛИЗА ЕНЕРГЕТСКИХ КАРАКТЕРИСТИКА ПОСТОЈЕЋЕ ФРАНСИС ТУРБИНЕ У ХЕ БИСТРИЦА]. in INTERNATIONAL CONFERENCE POWER PLANTS 2023. 2023;:836-844.
https://hdl.handle.net/21.15107/rcub_machinery_7256 .

Pešić, Jelica, Božić, Ivan, Ristić, Bogdan, "NUMERICAL ANALYSIS OF THE EXISTING FRANCIS TURBINE ENERGY CHARACTERISTICS AT THE HPP BISTRICA [НУМЕРИЧКА АНАЛИЗА ЕНЕРГЕТСКИХ КАРАКТЕРИСТИКА ПОСТОЈЕЋЕ ФРАНСИС ТУРБИНЕ У ХЕ БИСТРИЦА]" in INTERNATIONAL CONFERENCE POWER PLANTS 2023 (2023):836-844,
https://hdl.handle.net/21.15107/rcub_machinery_7256 .

TY  - JOUR
AU  - Grbović, Aleksandar
AU  - Kastratović, Gordana
AU  - Bozić, Željko
AU  - Božić, Ivan
AU  - Obradović, Aleksandar
AU  - Sedmak, Aleksandar
AU  - Sedmak, Simon
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3709
AB  - The aircraft industry is a leading industry in terms of the implementation of new materials and technologies. In the development of a light aircraft several different materials were considered for the engine cover design and the final decision was to select a composite material. Part of the research performed on the cover design is presented in this paper. The composite test specimens were produced and mechanical properties were investigated in the tensile and three-point flexural tests according to the required standards. The comparison of experimentally and numerically obtained mechanical properties showed good agreement, which led to the design, verification and manufacturing of the complex-shaped engine cover without costly and demanding tests. It was considered that numerical simulations of the engine cover performance under different loading conditions yielded realistic results, therefore experimental verification was excluded. The flight tests proved the predicted behavior, thus verifying the design methodology presented in this paper.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Experimental and numerical evaluation of fracture characteristics of composite material used in the aircraft engine cover manufacturing
VL  - 137
DO  - 10.1016/j.engfailanal.2022.106286
ER  - 

@article{
author = "Grbović, Aleksandar and Kastratović, Gordana and Bozić, Željko and Božić, Ivan and Obradović, Aleksandar and Sedmak, Aleksandar and Sedmak, Simon",
year = "2022",
abstract = "The aircraft industry is a leading industry in terms of the implementation of new materials and technologies. In the development of a light aircraft several different materials were considered for the engine cover design and the final decision was to select a composite material. Part of the research performed on the cover design is presented in this paper. The composite test specimens were produced and mechanical properties were investigated in the tensile and three-point flexural tests according to the required standards. The comparison of experimentally and numerically obtained mechanical properties showed good agreement, which led to the design, verification and manufacturing of the complex-shaped engine cover without costly and demanding tests. It was considered that numerical simulations of the engine cover performance under different loading conditions yielded realistic results, therefore experimental verification was excluded. The flight tests proved the predicted behavior, thus verifying the design methodology presented in this paper.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Experimental and numerical evaluation of fracture characteristics of composite material used in the aircraft engine cover manufacturing",
volume = "137",
doi = "10.1016/j.engfailanal.2022.106286"
}

Grbović, A., Kastratović, G., Bozić, Ž., Božić, I., Obradović, A., Sedmak, A.,& Sedmak, S.. (2022). Experimental and numerical evaluation of fracture characteristics of composite material used in the aircraft engine cover manufacturing. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 137.
https://doi.org/10.1016/j.engfailanal.2022.106286

Grbović A, Kastratović G, Bozić Ž, Božić I, Obradović A, Sedmak A, Sedmak S. Experimental and numerical evaluation of fracture characteristics of composite material used in the aircraft engine cover manufacturing. in Engineering Failure Analysis. 2022;137.
doi:10.1016/j.engfailanal.2022.106286 .

Grbović, Aleksandar, Kastratović, Gordana, Bozić, Željko, Božić, Ivan, Obradović, Aleksandar, Sedmak, Aleksandar, Sedmak, Simon, "Experimental and numerical evaluation of fracture characteristics of composite material used in the aircraft engine cover manufacturing" in Engineering Failure Analysis, 137 (2022),
https://doi.org/10.1016/j.engfailanal.2022.106286 . .

TY  - CONF
AU  - Ristić, Bogdan
AU  - Božić, Ivan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6156
AB  - Energy generation in hydropower plants is becoming of greater importance with the introduction of other renewable energy technologies because of its ability to stabilize the grid. The arising issues are that hydropower units are often operated in unfavorable conditions, away from their optimal design domain, and the need for updated hydropower scheduling for optimal water management. With the modern technologies brought by Industry 4.0, potential answers arise to resolve the mentioned issues and to optimize hydropower generation as well as to offer greater reliability. This paper gives a short overview on these technologies and their benefits on maintenance in the field of hydropower.
PB  - University of Belgrade Faculty of Mechanical Engineering
C3  - 8th International Symposium of Industrial Engineering [i. e.] SIE 2022
T1  - A SHORT OVERVIEW ON INDUSTRY 4.0 IN MAINTENANCE OF HYDROPOWER PLANTS
SP  - 274
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6156
ER  - 

@conference{
author = "Ristić, Bogdan and Božić, Ivan",
year = "2022",
abstract = "Energy generation in hydropower plants is becoming of greater importance with the introduction of other renewable energy technologies because of its ability to stabilize the grid. The arising issues are that hydropower units are often operated in unfavorable conditions, away from their optimal design domain, and the need for updated hydropower scheduling for optimal water management. With the modern technologies brought by Industry 4.0, potential answers arise to resolve the mentioned issues and to optimize hydropower generation as well as to offer greater reliability. This paper gives a short overview on these technologies and their benefits on maintenance in the field of hydropower.",
publisher = "University of Belgrade Faculty of Mechanical Engineering",
journal = "8th International Symposium of Industrial Engineering [i. e.] SIE 2022",
title = "A SHORT OVERVIEW ON INDUSTRY 4.0 IN MAINTENANCE OF HYDROPOWER PLANTS",
pages = "274",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6156"
}

Ristić, B.,& Božić, I.. (2022). A SHORT OVERVIEW ON INDUSTRY 4.0 IN MAINTENANCE OF HYDROPOWER PLANTS. in 8th International Symposium of Industrial Engineering [i. e.] SIE 2022
University of Belgrade Faculty of Mechanical Engineering., 274.
https://hdl.handle.net/21.15107/rcub_machinery_6156

Ristić B, Božić I. A SHORT OVERVIEW ON INDUSTRY 4.0 IN MAINTENANCE OF HYDROPOWER PLANTS. in 8th International Symposium of Industrial Engineering [i. e.] SIE 2022. 2022;:274.
https://hdl.handle.net/21.15107/rcub_machinery_6156 .

Ristić, Bogdan, Božić, Ivan, "A SHORT OVERVIEW ON INDUSTRY 4.0 IN MAINTENANCE OF HYDROPOWER PLANTS" in 8th International Symposium of Industrial Engineering [i. e.] SIE 2022 (2022):274,
https://hdl.handle.net/21.15107/rcub_machinery_6156 .

TY  - CONF
AU  - Ristić, Bogdan
AU  - Božić, Ivan
AU  - Pešić, Jelica
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6150
AB  - Revitalizacija velikih hidroelektrana uglavnom podrazumeva unapređenje radnih parametara velikih hidroagregata, dok se za kućne male hidroagregate, koji se koriste za sopstvenu potrošnju, obično usvajaju gotova postojeća tipska rešenja. Takva tipizacija uskraćuje mogućnost razmatranja više varijantnih rešenja, koja uzimaju u obzir fina poboljšanja energetskih parametara. U cilju celokupnog unapređenja energetske efikasnosti jedne hidroelektrane, razmotrena je mogućnost poboljšanja energetskih karakteristika Pelton turbine kućnog agregata koji je u višedecenijskoj eksploataciji, zadržavajući pri tome postojeće ulazne vrednosti protoka i neto pada. Primenom savremenih preporuka, urađena je uporedna analiza više varijantnih rešenja modernizacije kroz višeparametarsku analizu i projektovanje novog obrtnog kola. U radu su detaljnije prikazana izabrana rešenja kojima je moguće ostvariti povećanje nominalne snage turbine i do 3,5% u odnosu na nominalnu snagu postojeće turbine.
PB  - Society of Thermal Engineers of Serbia
C3  - VIII Regional Conference: INDUSTRIAL ENERGY AND ENVIRONMENTAL PROTECTION IN THE COUNTRIES OF SOUTHEAST EUROPE
T1  - UPOREDNA ANALIZA VARIJANTNIH REŠENJA PELTON TURBINE PRI REVITALIZACIJI MALOG HIDROAGREGATA SOPSTVENE POTROŠNJE
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6150
ER  - 

@conference{
author = "Ristić, Bogdan and Božić, Ivan and Pešić, Jelica",
year = "2022",
abstract = "Revitalizacija velikih hidroelektrana uglavnom podrazumeva unapređenje radnih parametara velikih hidroagregata, dok se za kućne male hidroagregate, koji se koriste za sopstvenu potrošnju, obično usvajaju gotova postojeća tipska rešenja. Takva tipizacija uskraćuje mogućnost razmatranja više varijantnih rešenja, koja uzimaju u obzir fina poboljšanja energetskih parametara. U cilju celokupnog unapređenja energetske efikasnosti jedne hidroelektrane, razmotrena je mogućnost poboljšanja energetskih karakteristika Pelton turbine kućnog agregata koji je u višedecenijskoj eksploataciji, zadržavajući pri tome postojeće ulazne vrednosti protoka i neto pada. Primenom savremenih preporuka, urađena je uporedna analiza više varijantnih rešenja modernizacije kroz višeparametarsku analizu i projektovanje novog obrtnog kola. U radu su detaljnije prikazana izabrana rešenja kojima je moguće ostvariti povećanje nominalne snage turbine i do 3,5% u odnosu na nominalnu snagu postojeće turbine.",
publisher = "Society of Thermal Engineers of Serbia",
journal = "VIII Regional Conference: INDUSTRIAL ENERGY AND ENVIRONMENTAL PROTECTION IN THE COUNTRIES OF SOUTHEAST EUROPE",
title = "UPOREDNA ANALIZA VARIJANTNIH REŠENJA PELTON TURBINE PRI REVITALIZACIJI MALOG HIDROAGREGATA SOPSTVENE POTROŠNJE",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6150"
}

Ristić, B., Božić, I.,& Pešić, J.. (2022). UPOREDNA ANALIZA VARIJANTNIH REŠENJA PELTON TURBINE PRI REVITALIZACIJI MALOG HIDROAGREGATA SOPSTVENE POTROŠNJE. in VIII Regional Conference: INDUSTRIAL ENERGY AND ENVIRONMENTAL PROTECTION IN THE COUNTRIES OF SOUTHEAST EUROPE
Society of Thermal Engineers of Serbia..
https://hdl.handle.net/21.15107/rcub_machinery_6150

Ristić B, Božić I, Pešić J. UPOREDNA ANALIZA VARIJANTNIH REŠENJA PELTON TURBINE PRI REVITALIZACIJI MALOG HIDROAGREGATA SOPSTVENE POTROŠNJE. in VIII Regional Conference: INDUSTRIAL ENERGY AND ENVIRONMENTAL PROTECTION IN THE COUNTRIES OF SOUTHEAST EUROPE. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_6150 .

Ristić, Bogdan, Božić, Ivan, Pešić, Jelica, "UPOREDNA ANALIZA VARIJANTNIH REŠENJA PELTON TURBINE PRI REVITALIZACIJI MALOG HIDROAGREGATA SOPSTVENE POTROŠNJE" in VIII Regional Conference: INDUSTRIAL ENERGY AND ENVIRONMENTAL PROTECTION IN THE COUNTRIES OF SOUTHEAST EUROPE (2022),
https://hdl.handle.net/21.15107/rcub_machinery_6150 .

TY  - JOUR
AU  - Ilić, Jovan
AU  - Božić, Ivan
AU  - Petković, Aleksandar
AU  - Karadzić, Uroš
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3776
AB  - Featured Application The newly developed model provides better understanding of the semi-pneumatic surge tanks and methods of application for the building and the refurbishment of the hydropower plant which is relatively simple, readily applicable and an inexpensive solution. Adopting adequate operational and safety measures is a significant part of the investigation of transient processes of hydropower plants (HPPs), both throughout the design stage of prospective plants and throughout the planning stage of the HPPs envisaged for refurbishment/uprating. One of the surge tank (ST) types, insufficiently researched so far, with a potential positive techno-economical influence, is the semi-pneumatic surge tank (SPST). Since the detailed analyses of SPST have never been performed or published before, the SPSTs have been examined here by presenting theoretical considerations, a newly developed mathematical model and comprehensive numerical simulations. The aim is to improve the performance of the open-air variations of STs. Multiple numerical simulations for a specific case-study HPP have been performed with the conclusions about the peculiarities and benefits of the SPST implementation. Firstly, numerical results for the existing as-built surge tank and corresponding alternative SPST have been compared, in order to verify the developed model. Variations of the main SPST constructive parameters have been analyzed, with the aim to determine the sensitivity of particular influences on transient processes versus its geometry alterations. The conducted analyses show that the SPST application brings HPP transient behaviour improvement compared to open-air ST. Dimensions of the new surge tank with specific aeration orifice could be smaller than the ones previously defined: both the diameter of the optimized upper and lower chamber and the core could be decreased by 20% and 12.5%, respectively.
PB  - MDPI, Basel
T2  - Applied Sciences-Basel
T1  - A Novel Approach to the Improvement of the Hydropower Plants Protective Measures-Modelling and Numerical Analyses of the Semi-Pneumatic Surge Tank
IS  - 5
VL  - 12
DO  - 10.3390/app12052353
ER  - 

@article{
author = "Ilić, Jovan and Božić, Ivan and Petković, Aleksandar and Karadzić, Uroš",
year = "2022",
abstract = "Featured Application The newly developed model provides better understanding of the semi-pneumatic surge tanks and methods of application for the building and the refurbishment of the hydropower plant which is relatively simple, readily applicable and an inexpensive solution. Adopting adequate operational and safety measures is a significant part of the investigation of transient processes of hydropower plants (HPPs), both throughout the design stage of prospective plants and throughout the planning stage of the HPPs envisaged for refurbishment/uprating. One of the surge tank (ST) types, insufficiently researched so far, with a potential positive techno-economical influence, is the semi-pneumatic surge tank (SPST). Since the detailed analyses of SPST have never been performed or published before, the SPSTs have been examined here by presenting theoretical considerations, a newly developed mathematical model and comprehensive numerical simulations. The aim is to improve the performance of the open-air variations of STs. Multiple numerical simulations for a specific case-study HPP have been performed with the conclusions about the peculiarities and benefits of the SPST implementation. Firstly, numerical results for the existing as-built surge tank and corresponding alternative SPST have been compared, in order to verify the developed model. Variations of the main SPST constructive parameters have been analyzed, with the aim to determine the sensitivity of particular influences on transient processes versus its geometry alterations. The conducted analyses show that the SPST application brings HPP transient behaviour improvement compared to open-air ST. Dimensions of the new surge tank with specific aeration orifice could be smaller than the ones previously defined: both the diameter of the optimized upper and lower chamber and the core could be decreased by 20% and 12.5%, respectively.",
publisher = "MDPI, Basel",
journal = "Applied Sciences-Basel",
title = "A Novel Approach to the Improvement of the Hydropower Plants Protective Measures-Modelling and Numerical Analyses of the Semi-Pneumatic Surge Tank",
number = "5",
volume = "12",
doi = "10.3390/app12052353"
}

Ilić, J., Božić, I., Petković, A.,& Karadzić, U.. (2022). A Novel Approach to the Improvement of the Hydropower Plants Protective Measures-Modelling and Numerical Analyses of the Semi-Pneumatic Surge Tank. in Applied Sciences-Basel
MDPI, Basel., 12(5).
https://doi.org/10.3390/app12052353

Ilić J, Božić I, Petković A, Karadzić U. A Novel Approach to the Improvement of the Hydropower Plants Protective Measures-Modelling and Numerical Analyses of the Semi-Pneumatic Surge Tank. in Applied Sciences-Basel. 2022;12(5).
doi:10.3390/app12052353 .

Ilić, Jovan, Božić, Ivan, Petković, Aleksandar, Karadzić, Uroš, "A Novel Approach to the Improvement of the Hydropower Plants Protective Measures-Modelling and Numerical Analyses of the Semi-Pneumatic Surge Tank" in Applied Sciences-Basel, 12, no. 5 (2022),
https://doi.org/10.3390/app12052353 . .

TY  - JOUR
AU  - Stevović, Ivan
AU  - Kirin, Snežana
AU  - Božić, Ivan
PY  - 2021
UR  - https://doi.org/10.7251/COMEN2102226S
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6476
AB  - Two artificial intelligence models for the integration of renewable energy 
sources are developed within this research to contribute to the European Green Plan realization. The review of renewable energy natural potential, on one hand, and installed capacity, on the other hand, in the Western Balkans and twenty-eight European countries is done within this research, as well as emissions. The analyses show that the European countries, sometimes even with lower natural potential in renewables, have installed much more renewable capacities than the Balkans countries with much higher natural potential. According to this, the first artificial intelligence model is developed based on multi-criteria linear regression analysis. This model relies on the correlation between the relevant regressors, i.e. relevant input variables for twenty-eight European countries and the same regressors for a particular Balkans country. Its goal is to find the maximum possible integrative renewable capacity in a Balkans’s country within the real socio-economic environment. The second artificial intelligence model is developed based on multi-criteria evolution genetic algorithms. Its goal is to find the maximum possible integrative renewable capacity within a real electric power system. Nature-inspired optimization is applied. From the framework of a given large number of generations, technical combinations of the degree of renewable energy sources integration, the best populations, i.e. combinations are selected. As nature selects from many generations and allows the best to survive and punishes the „weakˮ, in our case, „weak” combinations are those failing to meet the given conditions and limitations of the real electric power system. A new methodology is offered. Theoretical general formulas are given for both models. Developed models are tested on a numerical experiment of solar energy integration in the Serbia case study. Analyses of sensitivity prove that both models are applicable for all renewable energy sources and countries or regions.
PB  - Academy of Sciences and Arts of the Republic of Srpska
T2  - Contemporary Materials
T1  - Artificial Intelligence and Nature-Inspired Optimization on Integrative Capacity ff Renewable Energy in the Western Balkan
EP  - 252
SP  - 226
VL  - XII-2
DO  - 10.7251/COMEN2102226S
ER  - 

@article{
author = "Stevović, Ivan and Kirin, Snežana and Božić, Ivan",
year = "2021",
abstract = "Two artificial intelligence models for the integration of renewable energy 
sources are developed within this research to contribute to the European Green Plan realization. The review of renewable energy natural potential, on one hand, and installed capacity, on the other hand, in the Western Balkans and twenty-eight European countries is done within this research, as well as emissions. The analyses show that the European countries, sometimes even with lower natural potential in renewables, have installed much more renewable capacities than the Balkans countries with much higher natural potential. According to this, the first artificial intelligence model is developed based on multi-criteria linear regression analysis. This model relies on the correlation between the relevant regressors, i.e. relevant input variables for twenty-eight European countries and the same regressors for a particular Balkans country. Its goal is to find the maximum possible integrative renewable capacity in a Balkans’s country within the real socio-economic environment. The second artificial intelligence model is developed based on multi-criteria evolution genetic algorithms. Its goal is to find the maximum possible integrative renewable capacity within a real electric power system. Nature-inspired optimization is applied. From the framework of a given large number of generations, technical combinations of the degree of renewable energy sources integration, the best populations, i.e. combinations are selected. As nature selects from many generations and allows the best to survive and punishes the „weakˮ, in our case, „weak” combinations are those failing to meet the given conditions and limitations of the real electric power system. A new methodology is offered. Theoretical general formulas are given for both models. Developed models are tested on a numerical experiment of solar energy integration in the Serbia case study. Analyses of sensitivity prove that both models are applicable for all renewable energy sources and countries or regions.",
publisher = "Academy of Sciences and Arts of the Republic of Srpska",
journal = "Contemporary Materials",
title = "Artificial Intelligence and Nature-Inspired Optimization on Integrative Capacity ff Renewable Energy in the Western Balkan",
pages = "252-226",
volume = "XII-2",
doi = "10.7251/COMEN2102226S"
}

Stevović, I., Kirin, S.,& Božić, I.. (2021). Artificial Intelligence and Nature-Inspired Optimization on Integrative Capacity ff Renewable Energy in the Western Balkan. in Contemporary Materials
Academy of Sciences and Arts of the Republic of Srpska., XII-2, 226-252.
https://doi.org/10.7251/COMEN2102226S

Stevović I, Kirin S, Božić I. Artificial Intelligence and Nature-Inspired Optimization on Integrative Capacity ff Renewable Energy in the Western Balkan. in Contemporary Materials. 2021;XII-2:226-252.
doi:10.7251/COMEN2102226S .

Stevović, Ivan, Kirin, Snežana, Božić, Ivan, "Artificial Intelligence and Nature-Inspired Optimization on Integrative Capacity ff Renewable Energy in the Western Balkan" in Contemporary Materials, XII-2 (2021):226-252,
https://doi.org/10.7251/COMEN2102226S . .

TY  - GEN
AU  - Петковић, Александар
AU  - Божић, Иван
AU  - Гајић, Александар
AU  - Јовановић, Радиша
AU  - Илић, Јован
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6380
AB  - Предметним техничким решењем је решаван проблем оптималног унутарстаничног диспечинга (ОУД). Развијен је метод за унутарстаничну оптимизацију сваке од асиметричних хидроелектрана (ХЕ) из система каскадних Власинских хидроелектрана .
ОУД једне хидроелектране решава проблем да се при задатој коти горње воде и стању расположивости агрегата за погон, одређује такав састав ангажованих агрегата и расподела оптерећења на њих, тако да се на ХЕ радни процес остварује најрационалније, а уз задовољење свих припадајућих ограничења.
Посебне специфичности при тражењу оптималног решења су: вредности параметара у оптимизационом проблему, оптимизациони критеријум (функција циља), функционална ограничењима и скуп расположивих агрегата.
AB  - Развијен је метод за решавање проблема ОУД за универзалну диспозицију доводно-одводних органа сваке од четири хидроелектране у систему Власинских ХЕ, које имају асиметричне унутарстаничне енергетске карактеристике.  Резултати су применљиви за разне услове расположивости агрегата за погон, коте воде у акумулацији, вредности ротирајуће резерве и маневарности ХЕ у целини. 
Компаративне анализе стварно реализованих режима и ОУД-режима квантификовале су уштеду погонске воде која преостаје за допунску производњу енергије на свакој од четири ХЕ. Спроведене анализе указују да се могућности уштеде воде за реализовање додатне производње налазе у опсегу 1÷2,5% годишње производње, а збирно за целокупни систем Власинских ХЕ око 2% годишње производње.
T2  - Министарство просвете, науке и технолошког развоја, Матични научни одбор за енергетику, рударство и енергетску ефикасност
T1  - Унутарстанична оптимизација радних режима хидроелектрана
IS  - ТР0100-033/2021
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6380
ER  - 

@misc{
author = "Петковић, Александар and Божић, Иван and Гајић, Александар and Јовановић, Радиша and Илић, Јован",
year = "2021",
abstract = "Предметним техничким решењем је решаван проблем оптималног унутарстаничног диспечинга (ОУД). Развијен је метод за унутарстаничну оптимизацију сваке од асиметричних хидроелектрана (ХЕ) из система каскадних Власинских хидроелектрана .
ОУД једне хидроелектране решава проблем да се при задатој коти горње воде и стању расположивости агрегата за погон, одређује такав састав ангажованих агрегата и расподела оптерећења на њих, тако да се на ХЕ радни процес остварује најрационалније, а уз задовољење свих припадајућих ограничења.
Посебне специфичности при тражењу оптималног решења су: вредности параметара у оптимизационом проблему, оптимизациони критеријум (функција циља), функционална ограничењима и скуп расположивих агрегата., Развијен је метод за решавање проблема ОУД за универзалну диспозицију доводно-одводних органа сваке од четири хидроелектране у систему Власинских ХЕ, које имају асиметричне унутарстаничне енергетске карактеристике.  Резултати су применљиви за разне услове расположивости агрегата за погон, коте воде у акумулацији, вредности ротирајуће резерве и маневарности ХЕ у целини. 
Компаративне анализе стварно реализованих режима и ОУД-режима квантификовале су уштеду погонске воде која преостаје за допунску производњу енергије на свакој од четири ХЕ. Спроведене анализе указују да се могућности уштеде воде за реализовање додатне производње налазе у опсегу 1÷2,5% годишње производње, а збирно за целокупни систем Власинских ХЕ око 2% годишње производње.",
journal = "Министарство просвете, науке и технолошког развоја, Матични научни одбор за енергетику, рударство и енергетску ефикасност",
title = "Унутарстанична оптимизација радних режима хидроелектрана",
number = "ТР0100-033/2021",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6380"
}

Петковић, А., Божић, И., Гајић, А., Јовановић, Р.,& Илић, Ј.. (2021). Унутарстанична оптимизација радних режима хидроелектрана. in Министарство просвете, науке и технолошког развоја, Матични научни одбор за енергетику, рударство и енергетску ефикасност(ТР0100-033/2021).
https://hdl.handle.net/21.15107/rcub_machinery_6380

Петковић А, Божић И, Гајић А, Јовановић Р, Илић Ј. Унутарстанична оптимизација радних режима хидроелектрана. in Министарство просвете, науке и технолошког развоја, Матични научни одбор за енергетику, рударство и енергетску ефикасност. 2021;(ТР0100-033/2021).
https://hdl.handle.net/21.15107/rcub_machinery_6380 .

Петковић, Александар, Божић, Иван, Гајић, Александар, Јовановић, Радиша, Илић, Јован, "Унутарстанична оптимизација радних режима хидроелектрана" in Министарство просвете, науке и технолошког развоја, Матични научни одбор за енергетику, рударство и енергетску ефикасност, no. ТР0100-033/2021 (2021),
https://hdl.handle.net/21.15107/rcub_machinery_6380 .

TY  - CONF
AU  - Ristić, Bogdan
AU  - Božić, Ivan
AU  - Simić, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3613
AB  - It is sometimes economically unreasonable to develop specific turbines, but rather to use a well-known concept of a pump in the turbine mode - PAT (Pump As Turbine). Inspired by PAT, the scope of this paper covers the assessments of the possibility to use marine propellers as runners for the hydrokinetic turbines. Numerical analyses are conducted for selected propeller geometry with the aim of evaluating its energy characteristics in the turbine regime. The chosen propeller belongs to the conventional, thoroughly experimentally tested, Wageningen B -screw series. The experimental data were used for validation of the numerical results in propeller regimes. Based on the obtained results, the researched non-optimized turbine in its optimum regime achieves a satisfactory power coefficient which is close to the value of other types of contemporary hydrokinetic turbines efficiencies.
PB  - IOP Publishing Ltd, Bristol
C3  - 30th Iahr Symposium on Hydraulic Machinery and Systems (Iahr 2020)
T1  - A marine propeller as a hydrokinetic turbine - CFD analysis of energy characteristics
VL  - 774
DO  - 10.1088/1755-1315/774/1/012063
ER  - 

@conference{
author = "Ristić, Bogdan and Božić, Ivan and Simić, Aleksandar",
year = "2021",
abstract = "It is sometimes economically unreasonable to develop specific turbines, but rather to use a well-known concept of a pump in the turbine mode - PAT (Pump As Turbine). Inspired by PAT, the scope of this paper covers the assessments of the possibility to use marine propellers as runners for the hydrokinetic turbines. Numerical analyses are conducted for selected propeller geometry with the aim of evaluating its energy characteristics in the turbine regime. The chosen propeller belongs to the conventional, thoroughly experimentally tested, Wageningen B -screw series. The experimental data were used for validation of the numerical results in propeller regimes. Based on the obtained results, the researched non-optimized turbine in its optimum regime achieves a satisfactory power coefficient which is close to the value of other types of contemporary hydrokinetic turbines efficiencies.",
publisher = "IOP Publishing Ltd, Bristol",
journal = "30th Iahr Symposium on Hydraulic Machinery and Systems (Iahr 2020)",
title = "A marine propeller as a hydrokinetic turbine - CFD analysis of energy characteristics",
volume = "774",
doi = "10.1088/1755-1315/774/1/012063"
}

Ristić, B., Božić, I.,& Simić, A.. (2021). A marine propeller as a hydrokinetic turbine - CFD analysis of energy characteristics. in 30th Iahr Symposium on Hydraulic Machinery and Systems (Iahr 2020)
IOP Publishing Ltd, Bristol., 774.
https://doi.org/10.1088/1755-1315/774/1/012063

Ristić B, Božić I, Simić A. A marine propeller as a hydrokinetic turbine - CFD analysis of energy characteristics. in 30th Iahr Symposium on Hydraulic Machinery and Systems (Iahr 2020). 2021;774.
doi:10.1088/1755-1315/774/1/012063 .

Ristić, Bogdan, Božić, Ivan, Simić, Aleksandar, "A marine propeller as a hydrokinetic turbine - CFD analysis of energy characteristics" in 30th Iahr Symposium on Hydraulic Machinery and Systems (Iahr 2020), 774 (2021),
https://doi.org/10.1088/1755-1315/774/1/012063 . .

TY  - CONF
AU  - Ristić, Bogdan
AU  - Božić, Ivan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5970
AB  - Digitalization of hydropower plants gives rise to the implementation of new technologies, such as Artificial Intelligence, Smart Energy Systems, Smart Grid, Digital Twins, Industrial Internet of Things and others. These technologies can enable both a single hydropower plant and the whole fleet to function reliably and efficiently within the electric grid. By obtaining sensor-based data from in-situ and beyond, analyzing them in real time and comparing with historic data, conclusions can be drawn for optimization, generation and maintenance predictions. This paper summarizes and reviews the modern approach of these new technologies and their benefits which can enhance hydropower operation practice.
PB  - Society of Thermal Engineers of Serbia
C3  - International Conference POWER PLANTS 2021
T1  - DIGITAL TECHNOLOGIES EMERGENCE IN THE CONTEMPORARY HYDROPOWER PLANTS OPERATION
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5970
ER  - 

@conference{
author = "Ristić, Bogdan and Božić, Ivan",
year = "2021",
abstract = "Digitalization of hydropower plants gives rise to the implementation of new technologies, such as Artificial Intelligence, Smart Energy Systems, Smart Grid, Digital Twins, Industrial Internet of Things and others. These technologies can enable both a single hydropower plant and the whole fleet to function reliably and efficiently within the electric grid. By obtaining sensor-based data from in-situ and beyond, analyzing them in real time and comparing with historic data, conclusions can be drawn for optimization, generation and maintenance predictions. This paper summarizes and reviews the modern approach of these new technologies and their benefits which can enhance hydropower operation practice.",
publisher = "Society of Thermal Engineers of Serbia",
journal = "International Conference POWER PLANTS 2021",
title = "DIGITAL TECHNOLOGIES EMERGENCE IN THE CONTEMPORARY HYDROPOWER PLANTS OPERATION",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5970"
}

Ristić, B.,& Božić, I.. (2021). DIGITAL TECHNOLOGIES EMERGENCE IN THE CONTEMPORARY HYDROPOWER PLANTS OPERATION. in International Conference POWER PLANTS 2021
Society of Thermal Engineers of Serbia..
https://hdl.handle.net/21.15107/rcub_machinery_5970

Ristić B, Božić I. DIGITAL TECHNOLOGIES EMERGENCE IN THE CONTEMPORARY HYDROPOWER PLANTS OPERATION. in International Conference POWER PLANTS 2021. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_5970 .

Ristić, Bogdan, Božić, Ivan, "DIGITAL TECHNOLOGIES EMERGENCE IN THE CONTEMPORARY HYDROPOWER PLANTS OPERATION" in International Conference POWER PLANTS 2021 (2021),
https://hdl.handle.net/21.15107/rcub_machinery_5970 .

TY  - CONF
AU  - Ristić, Bogdan
AU  - Božić, Ivan
AU  - Knežević, Predrag
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6154
AB  - After surveying the existing teaching and research installations with Pelton turbines worldwide, it was concluded that there are no appropriate laboratory installations with a two-nozzle-Pelton turbine. Therefore, the design, techno-economic analysis and construction of one such laboratory installation have been conducted, where all the necessary energy characteristics of Pelton turbines will be tested. This adaptable installation can be used for various researches in order to determine numerous influential geometrical parameters with the aim of optimizing the construction of such type of hydraulic turbines. In addition to presenting the conceptual solution of the installation, the modeling and production of vital parts of the Pelton turbine, applying modern engineering recommendations and techniques are given in the paper.
AB  - Nakon sagledavnja postojećih nastavno-istraživačkih instalacija sa Pelton turbinama u svetu, utvrđeno je da ne postoje odgovarajuće laboratorijske instalacije sa dvomlaznom Pelton turbinom. Stoga se pristupilo projektovanju, tehno-ekonomskoj analizi i izradi jedne takve laboratorijske instalacije na kojoj bi se ispitivale sve potrebne energetske karakteristike Pelton turbine. Predviđena instalacija je adaptibilnog tipa na kojoj se mogu raditi raznovrsna istraživanja u cilju određivanja brojnih uticajnih geometrijskih parametara na optimizaciju konstrukcije ovog tipa hidrauličkih turbina. U radu je, pored prikaza idejnog rešenja instalacije, dato modeliranje i izrada vitalnih delova Pelton turbine primenjujući savremene inženjerske preporuke i tehnike.
PB  - Savez energetičara
C3  - Energetika 2021
T1  - MODELIRANJE I IZRADA PELTON TURBINE SA DVA MLAZNIKA ZA POTREBE NOVOFORMIRANE LABORATORIJSKE INSTALACIJE
SP  - 369
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6154
ER  - 

@conference{
author = "Ristić, Bogdan and Božić, Ivan and Knežević, Predrag",
year = "2021",
abstract = "After surveying the existing teaching and research installations with Pelton turbines worldwide, it was concluded that there are no appropriate laboratory installations with a two-nozzle-Pelton turbine. Therefore, the design, techno-economic analysis and construction of one such laboratory installation have been conducted, where all the necessary energy characteristics of Pelton turbines will be tested. This adaptable installation can be used for various researches in order to determine numerous influential geometrical parameters with the aim of optimizing the construction of such type of hydraulic turbines. In addition to presenting the conceptual solution of the installation, the modeling and production of vital parts of the Pelton turbine, applying modern engineering recommendations and techniques are given in the paper., Nakon sagledavnja postojećih nastavno-istraživačkih instalacija sa Pelton turbinama u svetu, utvrđeno je da ne postoje odgovarajuće laboratorijske instalacije sa dvomlaznom Pelton turbinom. Stoga se pristupilo projektovanju, tehno-ekonomskoj analizi i izradi jedne takve laboratorijske instalacije na kojoj bi se ispitivale sve potrebne energetske karakteristike Pelton turbine. Predviđena instalacija je adaptibilnog tipa na kojoj se mogu raditi raznovrsna istraživanja u cilju određivanja brojnih uticajnih geometrijskih parametara na optimizaciju konstrukcije ovog tipa hidrauličkih turbina. U radu je, pored prikaza idejnog rešenja instalacije, dato modeliranje i izrada vitalnih delova Pelton turbine primenjujući savremene inženjerske preporuke i tehnike.",
publisher = "Savez energetičara",
journal = "Energetika 2021",
title = "MODELIRANJE I IZRADA PELTON TURBINE SA DVA MLAZNIKA ZA POTREBE NOVOFORMIRANE LABORATORIJSKE INSTALACIJE",
pages = "369",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6154"
}

Ristić, B., Božić, I.,& Knežević, P.. (2021). MODELIRANJE I IZRADA PELTON TURBINE SA DVA MLAZNIKA ZA POTREBE NOVOFORMIRANE LABORATORIJSKE INSTALACIJE. in Energetika 2021
Savez energetičara., 369.
https://hdl.handle.net/21.15107/rcub_machinery_6154

Ristić B, Božić I, Knežević P. MODELIRANJE I IZRADA PELTON TURBINE SA DVA MLAZNIKA ZA POTREBE NOVOFORMIRANE LABORATORIJSKE INSTALACIJE. in Energetika 2021. 2021;:369.
https://hdl.handle.net/21.15107/rcub_machinery_6154 .

Ristić, Bogdan, Božić, Ivan, Knežević, Predrag, "MODELIRANJE I IZRADA PELTON TURBINE SA DVA MLAZNIKA ZA POTREBE NOVOFORMIRANE LABORATORIJSKE INSTALACIJE" in Energetika 2021 (2021):369,
https://hdl.handle.net/21.15107/rcub_machinery_6154 .

TY  - CONF
AU  - Brđanin, Radislav
AU  - Karadžić, Uroš
AU  - Bergant, Anton
AU  - Božić, Ivan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6381
AB  - This paper deals with experimental investigations of the influence of electro-pneumatically operated ball valve (EPV) on fluid-structure interaction (FSI) effect. The experimental setup for investigation of water hammer and its side effects, unsteady friction, cavitation, column separation and FSI is installed at Faculty of  Mechanical Engineering, Podgorica, Montenegro. Experimental runs have been performed with different  initial values of pressure in the upstream end high-pressurized tank and with EPV fixed and released. Some 
of the obtained results are presented and conclusions are given.
C3  - 6th IAHR Europe Congress
T1  - FSI Effects Caused by Electro-pneumatically Operated Ball Valve
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6381
ER  - 

@conference{
author = "Brđanin, Radislav and Karadžić, Uroš and Bergant, Anton and Božić, Ivan",
year = "2021",
abstract = "This paper deals with experimental investigations of the influence of electro-pneumatically operated ball valve (EPV) on fluid-structure interaction (FSI) effect. The experimental setup for investigation of water hammer and its side effects, unsteady friction, cavitation, column separation and FSI is installed at Faculty of  Mechanical Engineering, Podgorica, Montenegro. Experimental runs have been performed with different  initial values of pressure in the upstream end high-pressurized tank and with EPV fixed and released. Some 
of the obtained results are presented and conclusions are given.",
journal = "6th IAHR Europe Congress",
title = "FSI Effects Caused by Electro-pneumatically Operated Ball Valve",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6381"
}

Brđanin, R., Karadžić, U., Bergant, A.,& Božić, I.. (2021). FSI Effects Caused by Electro-pneumatically Operated Ball Valve. in 6th IAHR Europe Congress.
https://hdl.handle.net/21.15107/rcub_machinery_6381

Brđanin R, Karadžić U, Bergant A, Božić I. FSI Effects Caused by Electro-pneumatically Operated Ball Valve. in 6th IAHR Europe Congress. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_6381 .

Brđanin, Radislav, Karadžić, Uroš, Bergant, Anton, Božić, Ivan, "FSI Effects Caused by Electro-pneumatically Operated Ball Valve" in 6th IAHR Europe Congress (2021),
https://hdl.handle.net/21.15107/rcub_machinery_6381 .

TY  - CONF
AU  - Vilotijević, Vidosava
AU  - Karadžić, Uroš
AU  - Kovijanić, Vuko
AU  - Božić, Ivan
AU  - Vujadinović, Radoje
PY  - 2021
UR  - http://e2021.drustvo-termicara.com/book
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6507
AB  - In the last decade, hydrological data measurements, acquisitions and analyses of various Montenegrin mountain watercourses were carried out comprehensively. The data were analyzed respecting the hitherto known approaches in determining the small hydropower plant (SHPP) installed parameters. The SHPP installed parameter Ki is the ratio of the design flow and averaged perennial flow obtained from the flow duration curve at the planned water intake location. Due to the specifics of the rivers, it was not possible to define the installed parameters easily and clearly. For this reason, an improved multidisciplinary approach was conducted, which would lead to clearer general guidelines for quality and efficient determination of the SHPPs installed parameter respecting environmental requirements for each of them. The range of SHPP installed parameters is determined according to the technical and economic criteria. In this paper, the conclusions for three different SHPPs are presented comparing the calculated results and in-situ ones.
PB  - Društvo termičara Srbije
C3  - Full Papers Proceeding of International Conference „Power Plants 2021“, 17-18. November 2021
T1  - The techno-economic analysis of small hydropower plants installed parameters for three different mountain watercourses
IS  - E2021-040
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6507
ER  - 

@conference{
author = "Vilotijević, Vidosava and Karadžić, Uroš and Kovijanić, Vuko and Božić, Ivan and Vujadinović, Radoje",
year = "2021",
abstract = "In the last decade, hydrological data measurements, acquisitions and analyses of various Montenegrin mountain watercourses were carried out comprehensively. The data were analyzed respecting the hitherto known approaches in determining the small hydropower plant (SHPP) installed parameters. The SHPP installed parameter Ki is the ratio of the design flow and averaged perennial flow obtained from the flow duration curve at the planned water intake location. Due to the specifics of the rivers, it was not possible to define the installed parameters easily and clearly. For this reason, an improved multidisciplinary approach was conducted, which would lead to clearer general guidelines for quality and efficient determination of the SHPPs installed parameter respecting environmental requirements for each of them. The range of SHPP installed parameters is determined according to the technical and economic criteria. In this paper, the conclusions for three different SHPPs are presented comparing the calculated results and in-situ ones.",
publisher = "Društvo termičara Srbije",
journal = "Full Papers Proceeding of International Conference „Power Plants 2021“, 17-18. November 2021",
title = "The techno-economic analysis of small hydropower plants installed parameters for three different mountain watercourses",
number = "E2021-040",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6507"
}

Vilotijević, V., Karadžić, U., Kovijanić, V., Božić, I.,& Vujadinović, R.. (2021). The techno-economic analysis of small hydropower plants installed parameters for three different mountain watercourses. in Full Papers Proceeding of International Conference „Power Plants 2021“, 17-18. November 2021
Društvo termičara Srbije.(E2021-040).
https://hdl.handle.net/21.15107/rcub_machinery_6507

Vilotijević V, Karadžić U, Kovijanić V, Božić I, Vujadinović R. The techno-economic analysis of small hydropower plants installed parameters for three different mountain watercourses. in Full Papers Proceeding of International Conference „Power Plants 2021“, 17-18. November 2021. 2021;(E2021-040).
https://hdl.handle.net/21.15107/rcub_machinery_6507 .

Vilotijević, Vidosava, Karadžić, Uroš, Kovijanić, Vuko, Božić, Ivan, Vujadinović, Radoje, "The techno-economic analysis of small hydropower plants installed parameters for three different mountain watercourses" in Full Papers Proceeding of International Conference „Power Plants 2021“, 17-18. November 2021, no. E2021-040 (2021),
https://hdl.handle.net/21.15107/rcub_machinery_6507 .

TY  - CONF
AU  - Petrović, Jovana
AU  - Božić, Ivan
PY  - 2021
UR  - https://doi.ub.kg.ac.rs/2021/10-46793-eee21-1-32p/
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6508
AB  - Savremeni pristupi u prognoziranju i sprečavanju havarije, smanjenju broja i dužine trajanja zastoja, otkrivanju i praćenju otkaza u stvarnim višedecenijskim pogonskim uslovima hidroagregata, zasnivaju se na vibrodijagnostici. Multidisciplinarnost takvih pristupa ogleda se u identifikaciji pojedinih vibracija u hidroagregatima, primeni različitih vibrodijagnostičkih metoda, oceni kvaliteta izmerenih podataka, analizi i predikciji zasnovanih na veštačkoj inteligenciji. U radu je prikazan jedan od mogućih pristupa rešavanja kompleksne problematike predviđanja ponašanja jedne hidraulične turbine koja je u eksploataciji više od pola veka. Za kratkoročno predviđanje apsolutnih i relativnih vibracija razvijen je odgovarajući algoritam korišćenjem veštačkih beuronskih mreža. Dobijeni rezultati su prikazani u zavisnosti od različitih eksploatacionih uslova.
PB  - Savez energetičara
C3  - Зборник радова, XXXVI Међународно саветовање ЕНЕРГЕТИКА 2021, 22.-25.6.2021., Златибор, Србија
T1  - Kratkoročno predviđanje vibracionog ponašanja Fransis turbine nakon višedecenijske eksploatacije
EP  - 368
SP  - 364
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6508
ER  - 

@conference{
author = "Petrović, Jovana and Božić, Ivan",
year = "2021",
abstract = "Savremeni pristupi u prognoziranju i sprečavanju havarije, smanjenju broja i dužine trajanja zastoja, otkrivanju i praćenju otkaza u stvarnim višedecenijskim pogonskim uslovima hidroagregata, zasnivaju se na vibrodijagnostici. Multidisciplinarnost takvih pristupa ogleda se u identifikaciji pojedinih vibracija u hidroagregatima, primeni različitih vibrodijagnostičkih metoda, oceni kvaliteta izmerenih podataka, analizi i predikciji zasnovanih na veštačkoj inteligenciji. U radu je prikazan jedan od mogućih pristupa rešavanja kompleksne problematike predviđanja ponašanja jedne hidraulične turbine koja je u eksploataciji više od pola veka. Za kratkoročno predviđanje apsolutnih i relativnih vibracija razvijen je odgovarajući algoritam korišćenjem veštačkih beuronskih mreža. Dobijeni rezultati su prikazani u zavisnosti od različitih eksploatacionih uslova.",
publisher = "Savez energetičara",
journal = "Зборник радова, XXXVI Међународно саветовање ЕНЕРГЕТИКА 2021, 22.-25.6.2021., Златибор, Србија",
title = "Kratkoročno predviđanje vibracionog ponašanja Fransis turbine nakon višedecenijske eksploatacije",
pages = "368-364",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6508"
}

Petrović, J.,& Božić, I.. (2021). Kratkoročno predviđanje vibracionog ponašanja Fransis turbine nakon višedecenijske eksploatacije. in Зборник радова, XXXVI Међународно саветовање ЕНЕРГЕТИКА 2021, 22.-25.6.2021., Златибор, Србија
Savez energetičara., 364-368.
https://hdl.handle.net/21.15107/rcub_machinery_6508

Petrović J, Božić I. Kratkoročno predviđanje vibracionog ponašanja Fransis turbine nakon višedecenijske eksploatacije. in Зборник радова, XXXVI Међународно саветовање ЕНЕРГЕТИКА 2021, 22.-25.6.2021., Златибор, Србија. 2021;:364-368.
https://hdl.handle.net/21.15107/rcub_machinery_6508 .

Petrović, Jovana, Božić, Ivan, "Kratkoročno predviđanje vibracionog ponašanja Fransis turbine nakon višedecenijske eksploatacije" in Зборник радова, XXXVI Међународно саветовање ЕНЕРГЕТИКА 2021, 22.-25.6.2021., Златибор, Србија (2021):364-368,
https://hdl.handle.net/21.15107/rcub_machinery_6508 .

TY  - JOUR
AU  - Vilotijević, Vidosava
AU  - Karadzić, Uroš
AU  - Vujadinović, Radoje
AU  - Kovijanić, Vuko
AU  - Božić, Ivan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3528
AB  - Designing a small hydropower plant (SHPP) necessitates fulfillment of energy and ecological constraints, so a well-defined design flow is of the utmost significance. The main parameters of each SHPP are determined by appropriate techno-economic studies, whereas an improved approach to defining more precise SHPP installed parameter is presented in this paper. The SHPP installed parameter is the ratio of the design flow and averaged perennial flow obtained from the flow duration curve at the planned water intake location. Previous experiences in the design of SHPPs have shown that the SHPP installed parameter has a value in a wide range without the existence of an unambiguous equation for its determination. Therefore, with this aim, the thirty-eight (38) small watercources in the territory of Montenegro, denominated for the construction of SHPPs, have been investigated. SHPPs are divided into two groups depending on the installed capacity and the method of calculating the purchase price of electricity. For both groups, the range of SHPP installed parameter is determined according to the technical and economic criteria: the highest electricity production, the highest income, net present value (NPV), internal rate of return (IRR), and payback period (PB).
PB  - MDPI, Basel
T2  - Water
T1  - An Improved Techno-Economic Approach to Determination of More Precise Installed Parameter for Small Hydropower Plants
IS  - 17
VL  - 13
DO  - 10.3390/w13172419
ER  - 

@article{
author = "Vilotijević, Vidosava and Karadzić, Uroš and Vujadinović, Radoje and Kovijanić, Vuko and Božić, Ivan",
year = "2021",
abstract = "Designing a small hydropower plant (SHPP) necessitates fulfillment of energy and ecological constraints, so a well-defined design flow is of the utmost significance. The main parameters of each SHPP are determined by appropriate techno-economic studies, whereas an improved approach to defining more precise SHPP installed parameter is presented in this paper. The SHPP installed parameter is the ratio of the design flow and averaged perennial flow obtained from the flow duration curve at the planned water intake location. Previous experiences in the design of SHPPs have shown that the SHPP installed parameter has a value in a wide range without the existence of an unambiguous equation for its determination. Therefore, with this aim, the thirty-eight (38) small watercources in the territory of Montenegro, denominated for the construction of SHPPs, have been investigated. SHPPs are divided into two groups depending on the installed capacity and the method of calculating the purchase price of electricity. For both groups, the range of SHPP installed parameter is determined according to the technical and economic criteria: the highest electricity production, the highest income, net present value (NPV), internal rate of return (IRR), and payback period (PB).",
publisher = "MDPI, Basel",
journal = "Water",
title = "An Improved Techno-Economic Approach to Determination of More Precise Installed Parameter for Small Hydropower Plants",
number = "17",
volume = "13",
doi = "10.3390/w13172419"
}

Vilotijević, V., Karadzić, U., Vujadinović, R., Kovijanić, V.,& Božić, I.. (2021). An Improved Techno-Economic Approach to Determination of More Precise Installed Parameter for Small Hydropower Plants. in Water
MDPI, Basel., 13(17).
https://doi.org/10.3390/w13172419

Vilotijević V, Karadzić U, Vujadinović R, Kovijanić V, Božić I. An Improved Techno-Economic Approach to Determination of More Precise Installed Parameter for Small Hydropower Plants. in Water. 2021;13(17).
doi:10.3390/w13172419 .

Vilotijević, Vidosava, Karadzić, Uroš, Vujadinović, Radoje, Kovijanić, Vuko, Božić, Ivan, "An Improved Techno-Economic Approach to Determination of More Precise Installed Parameter for Small Hydropower Plants" in Water, 13, no. 17 (2021),
https://doi.org/10.3390/w13172419 . .

TY  - JOUR
AU  - Božić, Ivan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3495
AB  - Energy losses in the region between the runner and outlet section of a conventional hydraulic turbine have been the subject of investigation for a long time. In this paper as well, elbow draft tube losses are determined for the relevant wide range on-cam operating modes of the Kaplan turbine using a contemporary approach. The research considers the impact of swirl flow parameters, defined for the referent inlet of the draft tube, on the hydraulic losses. According to the methodology and obtained numerical results, a new formula for the calculation of draft tube losses is proposed. In the process of a hydropower plant refurbishment, the presented approach may enable more efficient and economically justified consideration of the performance improvement of the entire double regulated hydraulic turbine, especially in the case of keeping the existing elbow draft tube.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Renewable Energy
T1  - A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine
EP  - 558
SP  - 550
VL  - 175
DO  - 10.1016/j.renene.2021.05.014
ER  - 

@article{
author = "Božić, Ivan",
year = "2021",
abstract = "Energy losses in the region between the runner and outlet section of a conventional hydraulic turbine have been the subject of investigation for a long time. In this paper as well, elbow draft tube losses are determined for the relevant wide range on-cam operating modes of the Kaplan turbine using a contemporary approach. The research considers the impact of swirl flow parameters, defined for the referent inlet of the draft tube, on the hydraulic losses. According to the methodology and obtained numerical results, a new formula for the calculation of draft tube losses is proposed. In the process of a hydropower plant refurbishment, the presented approach may enable more efficient and economically justified consideration of the performance improvement of the entire double regulated hydraulic turbine, especially in the case of keeping the existing elbow draft tube.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Renewable Energy",
title = "A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine",
pages = "558-550",
volume = "175",
doi = "10.1016/j.renene.2021.05.014"
}

Božić, I.. (2021). A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine. in Renewable Energy
Pergamon-Elsevier Science Ltd, Oxford., 175, 550-558.
https://doi.org/10.1016/j.renene.2021.05.014

Božić I. A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine. in Renewable Energy. 2021;175:550-558.
doi:10.1016/j.renene.2021.05.014 .

Božić, Ivan, "A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine" in Renewable Energy, 175 (2021):550-558,
https://doi.org/10.1016/j.renene.2021.05.014 . .

TY  - CONF
AU  - Milicanović, Ljiljana
AU  - Božić, Ivan
AU  - Tkalac, Vladimir
AU  - Robajčević, Mladen
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6386
AB  - U cilju produživanja eksploatacionog veka, podizanja instalisane snage, postizanja visoke pouzdanosti i  energetske efikasnosti, visokog stepena raspoloživosti, optimizacije troškova i poboljšanja tehničko tehnološkog stanja opreme, pravilan odabir koncepta modernizacije hidroelektrane je od izuzetnog  značaja. Svetski trendovi, pređašnja iskustva i dinamično tržišno okruženje utiču na izbor koncepcije i  investicionog modela kada su revitalizacije hidroelektrana u pitanju. Rezultati nakon revitalizacije  najbolje svedoče o ostvarivanju jasno definisanih namera, ali ne i o sprovedenim aktivnostima, uočenim  prednostima i neminovnim poteškoćma za postizanje postavljenih ciljeva. U radu se daju osvrti na  završene, započete i buduće projekte u hidroenergetskom sektoru Republike Srbije.
C3  - Samit energetike SET 2020
T1  - Modernizacija i revitalizacija hidroelektrana u Republici Srbiji, pristupi, iskustva i rezultati
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6386
ER  - 

@conference{
author = "Milicanović, Ljiljana and Božić, Ivan and Tkalac, Vladimir and Robajčević, Mladen",
year = "2020",
abstract = "U cilju produživanja eksploatacionog veka, podizanja instalisane snage, postizanja visoke pouzdanosti i  energetske efikasnosti, visokog stepena raspoloživosti, optimizacije troškova i poboljšanja tehničko tehnološkog stanja opreme, pravilan odabir koncepta modernizacije hidroelektrane je od izuzetnog  značaja. Svetski trendovi, pređašnja iskustva i dinamično tržišno okruženje utiču na izbor koncepcije i  investicionog modela kada su revitalizacije hidroelektrana u pitanju. Rezultati nakon revitalizacije  najbolje svedoče o ostvarivanju jasno definisanih namera, ali ne i o sprovedenim aktivnostima, uočenim  prednostima i neminovnim poteškoćma za postizanje postavljenih ciljeva. U radu se daju osvrti na  završene, započete i buduće projekte u hidroenergetskom sektoru Republike Srbije.",
journal = "Samit energetike SET 2020",
title = "Modernizacija i revitalizacija hidroelektrana u Republici Srbiji, pristupi, iskustva i rezultati",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6386"
}

Milicanović, L., Božić, I., Tkalac, V.,& Robajčević, M.. (2020). Modernizacija i revitalizacija hidroelektrana u Republici Srbiji, pristupi, iskustva i rezultati. in Samit energetike SET 2020.
https://hdl.handle.net/21.15107/rcub_machinery_6386

Milicanović L, Božić I, Tkalac V, Robajčević M. Modernizacija i revitalizacija hidroelektrana u Republici Srbiji, pristupi, iskustva i rezultati. in Samit energetike SET 2020. 2020;.
https://hdl.handle.net/21.15107/rcub_machinery_6386 .

Milicanović, Ljiljana, Božić, Ivan, Tkalac, Vladimir, Robajčević, Mladen, "Modernizacija i revitalizacija hidroelektrana u Republici Srbiji, pristupi, iskustva i rezultati" in Samit energetike SET 2020 (2020),
https://hdl.handle.net/21.15107/rcub_machinery_6386 .

TY  - CONF
AU  - Божић, Иван
AU  - Петковић, Александар
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6393
AB  - Циљеви које треба да остваре мале хидроелектране (МХЕ)  у данашње време битно се не разликују од циљева и улога које су МХЕ одувек имале. Остваривање тих циљева подразумева изналажење компромисних решења у складу са савременим стањем науке и технике, задовољавајући енергетске и еколошке захтеве који су постављени пред различите типове  МХЕ. Са еколошког становишта, примарни циљ је обезбеђивање сталног гарантованог еколошког протока низводно од бране у свим хидрометеоролошким приликама, док енергетска прерада воде у производним линијама МХЕ претендује њеном што већем искоришћењу. Наведени захтеви су често међусобно супротстављени, јер испуњење једних намеће ограничења остваривању других. Стога, једна од кључних пројектантских и извођачких активности треба да буде правилно дефинисање хидротехничких функција свих виталних делова МХЕ, посебно брана и водозахвата. Бројне хидротехничке функције и дефинисани еколошки захтеви условљени су посебним потребама конкретних хидроенергетских објеката, па се и њихово задовољење реализује  одговарајућим савременим техничким решењима хидрауличних органа и  хидромеханичке опреме. Истовремено се таквим калибрисаним преливима  и специфичном хидромашинском опремом омогућује правилно расподељивање захватања воде у енергетске сврхе. У раду је на примеру једне МХЕ приказано истовремено задовољење и енергетских и еколошких захтева.
PB  - Српска академија наука и уметности (САНУ)
C3  - УТИЦАЈ МАЛИХ ХИДРОЕЛЕКТРАНА НА ЖИВОТНУ СРЕДИНУ : Примљено на VI скупу Одељења хемијских и биолошких наука, одржаном 20. септембра 2019. годин
T1  - Утицај појединих техничких решења на остваривање енергетских и еколошких циљева малих хидроелектрана
IS  - CLXXXVII
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6393
ER  - 

@conference{
author = "Божић, Иван and Петковић, Александар",
year = "2020",
abstract = "Циљеви које треба да остваре мале хидроелектране (МХЕ)  у данашње време битно се не разликују од циљева и улога које су МХЕ одувек имале. Остваривање тих циљева подразумева изналажење компромисних решења у складу са савременим стањем науке и технике, задовољавајући енергетске и еколошке захтеве који су постављени пред различите типове  МХЕ. Са еколошког становишта, примарни циљ је обезбеђивање сталног гарантованог еколошког протока низводно од бране у свим хидрометеоролошким приликама, док енергетска прерада воде у производним линијама МХЕ претендује њеном што већем искоришћењу. Наведени захтеви су често међусобно супротстављени, јер испуњење једних намеће ограничења остваривању других. Стога, једна од кључних пројектантских и извођачких активности треба да буде правилно дефинисање хидротехничких функција свих виталних делова МХЕ, посебно брана и водозахвата. Бројне хидротехничке функције и дефинисани еколошки захтеви условљени су посебним потребама конкретних хидроенергетских објеката, па се и њихово задовољење реализује  одговарајућим савременим техничким решењима хидрауличних органа и  хидромеханичке опреме. Истовремено се таквим калибрисаним преливима  и специфичном хидромашинском опремом омогућује правилно расподељивање захватања воде у енергетске сврхе. У раду је на примеру једне МХЕ приказано истовремено задовољење и енергетских и еколошких захтева.",
publisher = "Српска академија наука и уметности (САНУ)",
journal = "УТИЦАЈ МАЛИХ ХИДРОЕЛЕКТРАНА НА ЖИВОТНУ СРЕДИНУ : Примљено на VI скупу Одељења хемијских и биолошких наука, одржаном 20. септембра 2019. годин",
title = "Утицај појединих техничких решења на остваривање енергетских и еколошких циљева малих хидроелектрана",
number = "CLXXXVII",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6393"
}

Божић, И.,& Петковић, А.. (2020). Утицај појединих техничких решења на остваривање енергетских и еколошких циљева малих хидроелектрана. in УТИЦАЈ МАЛИХ ХИДРОЕЛЕКТРАНА НА ЖИВОТНУ СРЕДИНУ : Примљено на VI скупу Одељења хемијских и биолошких наука, одржаном 20. септембра 2019. годин
Српска академија наука и уметности (САНУ).(CLXXXVII).
https://hdl.handle.net/21.15107/rcub_machinery_6393

Божић И, Петковић А. Утицај појединих техничких решења на остваривање енергетских и еколошких циљева малих хидроелектрана. in УТИЦАЈ МАЛИХ ХИДРОЕЛЕКТРАНА НА ЖИВОТНУ СРЕДИНУ : Примљено на VI скупу Одељења хемијских и биолошких наука, одржаном 20. септембра 2019. годин. 2020;(CLXXXVII).
https://hdl.handle.net/21.15107/rcub_machinery_6393 .

Божић, Иван, Петковић, Александар, "Утицај појединих техничких решења на остваривање енергетских и еколошких циљева малих хидроелектрана" in УТИЦАЈ МАЛИХ ХИДРОЕЛЕКТРАНА НА ЖИВОТНУ СРЕДИНУ : Примљено на VI скупу Одељења хемијских и биолошких наука, одржаном 20. септембра 2019. годин, no. CLXXXVII (2020),
https://hdl.handle.net/21.15107/rcub_machinery_6393 .

TY  - CONF
AU  - Vilotijević, Vidosava
AU  - Karadžić, Uroš
AU  - Božić, Ivan
AU  - Ilić, Jovan
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6410
AB  - The basic parameters for determining and calclulation of installed capacity 
and energy production of the small hydro power plant (SHPP) are design discharge and net head. The SHPP installed parameter Ki is the ratio of the design discharge and averaged perennial discharge obtained from the flow duration curve at the planned water intake location, so that being knowledgeable about the turbine design discharge is of great significance.The paper shows the previously mentioned parameters for nineteen planned SHPPs with capacities bellow 1 MW at the territory of Montenegro. For each SHPP, design discharge is determined according to two criteria: the highest electricity production and the highest income.
C3  - 14th International Conference on Accomplishments in Mechanical and Industrial Engineering, DEMI 2019
T1  - Design discharge determination for SHPPs with below 1 MW capacity
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6410
ER  - 

@conference{
author = "Vilotijević, Vidosava and Karadžić, Uroš and Božić, Ivan and Ilić, Jovan",
year = "2019",
abstract = "The basic parameters for determining and calclulation of installed capacity 
and energy production of the small hydro power plant (SHPP) are design discharge and net head. The SHPP installed parameter Ki is the ratio of the design discharge and averaged perennial discharge obtained from the flow duration curve at the planned water intake location, so that being knowledgeable about the turbine design discharge is of great significance.The paper shows the previously mentioned parameters for nineteen planned SHPPs with capacities bellow 1 MW at the territory of Montenegro. For each SHPP, design discharge is determined according to two criteria: the highest electricity production and the highest income.",
journal = "14th International Conference on Accomplishments in Mechanical and Industrial Engineering, DEMI 2019",
title = "Design discharge determination for SHPPs with below 1 MW capacity",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6410"
}

Vilotijević, V., Karadžić, U., Božić, I.,& Ilić, J.. (2019). Design discharge determination for SHPPs with below 1 MW capacity. in 14th International Conference on Accomplishments in Mechanical and Industrial Engineering, DEMI 2019.
https://hdl.handle.net/21.15107/rcub_machinery_6410

Vilotijević V, Karadžić U, Božić I, Ilić J. Design discharge determination for SHPPs with below 1 MW capacity. in 14th International Conference on Accomplishments in Mechanical and Industrial Engineering, DEMI 2019. 2019;.
https://hdl.handle.net/21.15107/rcub_machinery_6410 .

Vilotijević, Vidosava, Karadžić, Uroš, Božić, Ivan, Ilić, Jovan, "Design discharge determination for SHPPs with below 1 MW capacity" in 14th International Conference on Accomplishments in Mechanical and Industrial Engineering, DEMI 2019 (2019),
https://hdl.handle.net/21.15107/rcub_machinery_6410 .

TY  - JOUR
AU  - Ilić, Jovan
AU  - Petković, Aleksandar
AU  - Božić, Ivan
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3053
AB  - Analize hidrauličnih prelaznih radnih režima su neophodne u fazi projektovanja novih i revitalizacije postojećih hidroelektrana. U ovom radu su razmatrani prelazni procesi pri specifičnim ekstremnim radnim režimima za derivacionu hidroelektranu u kojoj su ugrađeni vodostan i sinhroni regulator pritiska na spiralnom kućištu turbine. Posebni osvrti su na analizama prelaznih režima pri oscilacijama vodenih masa i hidrauličkom udaru. Razmatrani su razni eksploatacioni režimi i različiti zakoni rada sihronih regulatora pritiska. Rezultati su dobijeni pomoću originalnog softvera razvijenog za potrebe ovih analiza. Urađena je kalibracija modela, a rezultati su upoređeni sa analizama prelaznih režima iz faze projektovanja postojeće hidroelektrane.
AB  - Hydraulic transients analyses are necessary during the design stage of both new and refurbished hydropower plants (HPPs). In this paper, transients of specified most extreme operational regimes are investigated for a long derivation system, provided with a surge tank as well as pressure relief valves (PRVs) at the turbines spiral casing. The transients analyses are focused on water-mass oscillations and water hammer. Investigations for various exploitation regimes and different operating laws of the PRV's are adopted. Results are obtained by means of an original software developed for these analyses. The model was duly calibrated, and the results were compared with the results of the transient analyses from the original design phase of the existing HPP.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - 
T1  - Numerical analyses of water hammer and water-mass oscillations in a hydropower plant for the most extreme operational regimes
EP  - 15
IS  - 1
SP  - 7
VL  - 47
DO  - 10.5937/fmet1901007I
ER  - 

@article{
author = "Ilić, Jovan and Petković, Aleksandar and Božić, Ivan",
year = "2019",
abstract = "Analize hidrauličnih prelaznih radnih režima su neophodne u fazi projektovanja novih i revitalizacije postojećih hidroelektrana. U ovom radu su razmatrani prelazni procesi pri specifičnim ekstremnim radnim režimima za derivacionu hidroelektranu u kojoj su ugrađeni vodostan i sinhroni regulator pritiska na spiralnom kućištu turbine. Posebni osvrti su na analizama prelaznih režima pri oscilacijama vodenih masa i hidrauličkom udaru. Razmatrani su razni eksploatacioni režimi i različiti zakoni rada sihronih regulatora pritiska. Rezultati su dobijeni pomoću originalnog softvera razvijenog za potrebe ovih analiza. Urađena je kalibracija modela, a rezultati su upoređeni sa analizama prelaznih režima iz faze projektovanja postojeće hidroelektrane., Hydraulic transients analyses are necessary during the design stage of both new and refurbished hydropower plants (HPPs). In this paper, transients of specified most extreme operational regimes are investigated for a long derivation system, provided with a surge tank as well as pressure relief valves (PRVs) at the turbines spiral casing. The transients analyses are focused on water-mass oscillations and water hammer. Investigations for various exploitation regimes and different operating laws of the PRV's are adopted. Results are obtained by means of an original software developed for these analyses. The model was duly calibrated, and the results were compared with the results of the transient analyses from the original design phase of the existing HPP.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = ", Numerical analyses of water hammer and water-mass oscillations in a hydropower plant for the most extreme operational regimes",
pages = "15-7",
number = "1",
volume = "47",
doi = "10.5937/fmet1901007I"
}

Ilić, J., Petković, A.,& Božić, I.. (2019). . in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 47(1), 7-15.
https://doi.org/10.5937/fmet1901007I

Ilić J, Petković A, Božić I. . in FME Transactions. 2019;47(1):7-15.
doi:10.5937/fmet1901007I .

Ilić, Jovan, Petković, Aleksandar, Božić, Ivan, "" in FME Transactions, 47, no. 1 (2019):7-15,
https://doi.org/10.5937/fmet1901007I . .

TY  - CONF
AU  - Brđanin, Radislav
AU  - Karadžić, Uroš
AU  - Božić, Ivan
AU  - Ilić, Jovan
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6409
AB  - This paper presents comparison of results obtained by dynamic pressure transducers, which measure fast pressure changes during transients, installed on experimental setup for investigation of water hammer and its side effects, unsteady friction, cavitation, column separation and fluid structure interaction (FSI). Apparatus, situated at the Faculty of Mechanical Engineering in Podgorica, is comprised of high presusurized tank, steel pipeline and outflow tank. Four dynamic and four absolute high-frequency pressure transducers are positioned within the valve units along the pipeline. Results of the dynamic and absolute pressure measurements are compared and analyzed. Proposals for the future improvement of experimental setup are given.
PB  - Društvo termičara Srbije
C3  - VII Regional Conference „Industrial Energy and Environmental Protection in South Eastern European Countries IEEP ‘19
T1  - Comparison of dynamic pressure transducers on experimental water hammer setup
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6409
ER  - 

@conference{
author = "Brđanin, Radislav and Karadžić, Uroš and Božić, Ivan and Ilić, Jovan",
year = "2019",
abstract = "This paper presents comparison of results obtained by dynamic pressure transducers, which measure fast pressure changes during transients, installed on experimental setup for investigation of water hammer and its side effects, unsteady friction, cavitation, column separation and fluid structure interaction (FSI). Apparatus, situated at the Faculty of Mechanical Engineering in Podgorica, is comprised of high presusurized tank, steel pipeline and outflow tank. Four dynamic and four absolute high-frequency pressure transducers are positioned within the valve units along the pipeline. Results of the dynamic and absolute pressure measurements are compared and analyzed. Proposals for the future improvement of experimental setup are given.",
publisher = "Društvo termičara Srbije",
journal = "VII Regional Conference „Industrial Energy and Environmental Protection in South Eastern European Countries IEEP ‘19",
title = "Comparison of dynamic pressure transducers on experimental water hammer setup",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6409"
}

Brđanin, R., Karadžić, U., Božić, I.,& Ilić, J.. (2019). Comparison of dynamic pressure transducers on experimental water hammer setup. in VII Regional Conference „Industrial Energy and Environmental Protection in South Eastern European Countries IEEP ‘19
Društvo termičara Srbije..
https://hdl.handle.net/21.15107/rcub_machinery_6409

Brđanin R, Karadžić U, Božić I, Ilić J. Comparison of dynamic pressure transducers on experimental water hammer setup. in VII Regional Conference „Industrial Energy and Environmental Protection in South Eastern European Countries IEEP ‘19. 2019;.
https://hdl.handle.net/21.15107/rcub_machinery_6409 .

Brđanin, Radislav, Karadžić, Uroš, Božić, Ivan, Ilić, Jovan, "Comparison of dynamic pressure transducers on experimental water hammer setup" in VII Regional Conference „Industrial Energy and Environmental Protection in South Eastern European Countries IEEP ‘19 (2019),
https://hdl.handle.net/21.15107/rcub_machinery_6409 .

TY  - CONF
AU  - Ilić, Jovan
AU  - Božić, Ivan
AU  - Karadžić, Uroš
AU  - Brđanin, Radislav
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6405
AB  - Analysis of transient processes is necessary at the design stage as well as 
 during refurbishment of a hydropower plant (HPP). Comprehensive analysis of non-stationary phenomena during transient processes at HPP implies investigation on possible improvements through operation and constructive protection measures. In this paper, the analysis of relevant constructive measures for HPP Pirot is presented comprising the improved tri-linear guide vanes closing law, which can be implemented  instead of the current linear one. HPP Pirot is equipped with the two-chamber surge tank and synchronous pressure regulating valves (SPRVs) on the turbines. SPRVs are  installed directly at turbines spiral cases, and their opening law is complementary to the closing law of the guide vanes. Prior to analyzing the HPP characteristics during emergency shut down regime for various potential surge tank types, the research of the safety of the existing surge tank with the improved closing law has been conducted for the same operational condition.
C3  - 14th International Conference on Accomplishments in Mechanical and Industrial Engineering, DEMI 2019
T1  - Comparative analysis of the hydropower plant transient processes for various surge tank types and improved guide vanes closing law
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6405
ER  - 

@conference{
author = "Ilić, Jovan and Božić, Ivan and Karadžić, Uroš and Brđanin, Radislav",
year = "2019",
abstract = "Analysis of transient processes is necessary at the design stage as well as 
 during refurbishment of a hydropower plant (HPP). Comprehensive analysis of non-stationary phenomena during transient processes at HPP implies investigation on possible improvements through operation and constructive protection measures. In this paper, the analysis of relevant constructive measures for HPP Pirot is presented comprising the improved tri-linear guide vanes closing law, which can be implemented  instead of the current linear one. HPP Pirot is equipped with the two-chamber surge tank and synchronous pressure regulating valves (SPRVs) on the turbines. SPRVs are  installed directly at turbines spiral cases, and their opening law is complementary to the closing law of the guide vanes. Prior to analyzing the HPP characteristics during emergency shut down regime for various potential surge tank types, the research of the safety of the existing surge tank with the improved closing law has been conducted for the same operational condition.",
journal = "14th International Conference on Accomplishments in Mechanical and Industrial Engineering, DEMI 2019",
title = "Comparative analysis of the hydropower plant transient processes for various surge tank types and improved guide vanes closing law",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6405"
}

Ilić, J., Božić, I., Karadžić, U.,& Brđanin, R.. (2019). Comparative analysis of the hydropower plant transient processes for various surge tank types and improved guide vanes closing law. in 14th International Conference on Accomplishments in Mechanical and Industrial Engineering, DEMI 2019.
https://hdl.handle.net/21.15107/rcub_machinery_6405

Ilić J, Božić I, Karadžić U, Brđanin R. Comparative analysis of the hydropower plant transient processes for various surge tank types and improved guide vanes closing law. in 14th International Conference on Accomplishments in Mechanical and Industrial Engineering, DEMI 2019. 2019;.
https://hdl.handle.net/21.15107/rcub_machinery_6405 .

Ilić, Jovan, Božić, Ivan, Karadžić, Uroš, Brđanin, Radislav, "Comparative analysis of the hydropower plant transient processes for various surge tank types and improved guide vanes closing law" in 14th International Conference on Accomplishments in Mechanical and Industrial Engineering, DEMI 2019 (2019),
https://hdl.handle.net/21.15107/rcub_machinery_6405 .

TY  - CONF
AU  - Божић, Иван
AU  - Јовановић, Радиша
PY  - 2018
UR  - https://doi.org.10.240/ptk.018.30.1.49
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6475
AB  - У области обновљивих извора енергије хидроенергија се сврстава у економски и еколошки прихватљиве изворе за чију се енергетску трансформацију примењују изузетно ефикасни и поуздани системи. Пројектовање и експлоатација таквих система у динамички тржишном орјентисаном окружењу захтевају континуално ажурирање и квалитетно одређивање битних енергетских карактеристика. Одређивање хидроенергетских потенцијала река, енергетско вредновање нових и ревитализованих малих и великих хидроелектрана и предикција производње електричне енергије у њима се врше на основу бројних критеријума, помоћу енергетских и економских показатеља и коришћењем различитих методолошких приступа. Предуслов за добијање поузданих података и ваљане предикције, независно од примењене методологије, заснива се на добром познавању хидролошких прилика, експлоатационих карактеристика хидроагрегата у широкој радној области и промене потрошње у времену. Електроенергетска производња у хидроелектранама је превасходно заснована на показатељима хидролошких и метеоролошких услова који су по свом карактеру стохастичке, нестационарне и неравномерне величине. Потрошња као квантитативан параметар припада истој категорији величина, док се у хидроелектране уграђују турбине чије се експлоатационе карактеристике одређују опсежним и изузетно скупим експерименталним испитивањима. Постојећи стандарди дефинишу услове, процедуре и поступке мерења, мерну опрему, обраду и анализу резултата мерења у зависности од врсте захтеваних испитивања. У циљу рационализације услова за добијање карактеристика хидрауличних турбина све више се примењују савремени нумерички експерименти засновани на несавршеним нумеричким симулацијама струјања. Последњих година, примена метода вештачких неуронских мрежа за одређивање поузданих параметара хидрауличних турбина, предикцију производње и оптимизацију рада хидроелектрана показује своја преимућства. У раду су приказане уобичајене методе које прописују стандарди за лабораторијско и теренско испитивање великих и малих хидроелектрана, као трендови коришћења савремених приступа, указујући на њихове предности и недостатке.
C3  - Zbornik radova [pisanih za 31. kongres o procesnoj industriji] - PROCESING 2018, 6-8. jun 2018, Bajina Bašta
T1  - Стандардни и савремени приступи у одређивању енергетских карактеристика великих и малих хидроелектрана
EP  - 62
SP  - 49
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6475
ER  - 

@conference{
author = "Божић, Иван and Јовановић, Радиша",
year = "2018",
abstract = "У области обновљивих извора енергије хидроенергија се сврстава у економски и еколошки прихватљиве изворе за чију се енергетску трансформацију примењују изузетно ефикасни и поуздани системи. Пројектовање и експлоатација таквих система у динамички тржишном орјентисаном окружењу захтевају континуално ажурирање и квалитетно одређивање битних енергетских карактеристика. Одређивање хидроенергетских потенцијала река, енергетско вредновање нових и ревитализованих малих и великих хидроелектрана и предикција производње електричне енергије у њима се врше на основу бројних критеријума, помоћу енергетских и економских показатеља и коришћењем различитих методолошких приступа. Предуслов за добијање поузданих података и ваљане предикције, независно од примењене методологије, заснива се на добром познавању хидролошких прилика, експлоатационих карактеристика хидроагрегата у широкој радној области и промене потрошње у времену. Електроенергетска производња у хидроелектранама је превасходно заснована на показатељима хидролошких и метеоролошких услова који су по свом карактеру стохастичке, нестационарне и неравномерне величине. Потрошња као квантитативан параметар припада истој категорији величина, док се у хидроелектране уграђују турбине чије се експлоатационе карактеристике одређују опсежним и изузетно скупим експерименталним испитивањима. Постојећи стандарди дефинишу услове, процедуре и поступке мерења, мерну опрему, обраду и анализу резултата мерења у зависности од врсте захтеваних испитивања. У циљу рационализације услова за добијање карактеристика хидрауличних турбина све више се примењују савремени нумерички експерименти засновани на несавршеним нумеричким симулацијама струјања. Последњих година, примена метода вештачких неуронских мрежа за одређивање поузданих параметара хидрауличних турбина, предикцију производње и оптимизацију рада хидроелектрана показује своја преимућства. У раду су приказане уобичајене методе које прописују стандарди за лабораторијско и теренско испитивање великих и малих хидроелектрана, као трендови коришћења савремених приступа, указујући на њихове предности и недостатке.",
journal = "Zbornik radova [pisanih za 31. kongres o procesnoj industriji] - PROCESING 2018, 6-8. jun 2018, Bajina Bašta",
title = "Стандардни и савремени приступи у одређивању енергетских карактеристика великих и малих хидроелектрана",
pages = "62-49",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6475"
}

Божић, И.,& Јовановић, Р.. (2018). Стандардни и савремени приступи у одређивању енергетских карактеристика великих и малих хидроелектрана. in Zbornik radova [pisanih za 31. kongres o procesnoj industriji] - PROCESING 2018, 6-8. jun 2018, Bajina Bašta, 49-62.
https://hdl.handle.net/21.15107/rcub_machinery_6475

Божић И, Јовановић Р. Стандардни и савремени приступи у одређивању енергетских карактеристика великих и малих хидроелектрана. in Zbornik radova [pisanih za 31. kongres o procesnoj industriji] - PROCESING 2018, 6-8. jun 2018, Bajina Bašta. 2018;:49-62.
https://hdl.handle.net/21.15107/rcub_machinery_6475 .

Божић, Иван, Јовановић, Радиша, "Стандардни и савремени приступи у одређивању енергетских карактеристика великих и малих хидроелектрана" in Zbornik radova [pisanih za 31. kongres o procesnoj industriji] - PROCESING 2018, 6-8. jun 2018, Bajina Bašta (2018):49-62,
https://hdl.handle.net/21.15107/rcub_machinery_6475 .

TY  - CONF
AU  - Jovanović, Radiša
AU  - Božić, Ivan
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6048
AB  - Развој система који користе обновљиве изворе енергије захтева примену софистицираних
техника у циљу тачне процене расположивог енергетског потенцијала и њиховог eфикасног управљања и оптимизације. Основна карактеристика метода вештачке интелигенције је да оне користе рачунарске системе за извршавање задатака који захтевају интелигентно понашање, као што су учење, расуђивање, решавање проблема и доношење одлука у присуству неизвесности. То посебно може бити корисно у моделовању, анализи, оптимизацији и предикцији перформанси и управљању система са обновљивим енергијама и ефикаснијој употреби енергије у термоенергетским, термотехничким и процесним постројењима. Ови системи су изразито нелинеарни, сложени и динамички, где основни физички односи нису у потпуности разјашњени и где су доступни подаци често зашумљени и/или некомплетни. Вишепараметарски и вишекритеријумски аспект у пројектовању ових система није лако третирати применом аналитичких метода, физичких модела или нумеричких метода. Методе вештачке интелигенције могу да обезбеде обећавајућу и поуздану алтернативу, или допуну традиционалним детерминистичким и статистичким прилазима који се користе у енергетској ефикасности и обновљивим изворима енергије. Ове методе омогућавају изучавање система без икаквог познавања тачних релација које описују њихов рад, и једном када се обуче, дозвољавају извршавање сложених задатака као што су моделовање, предикција, идентификација, оптимизација и управљање. Вештачке неуронске мреже и метода потпорних вектора, као неке од најчешће коришћених методологија, и њихова примена у енергетској ефикасности и системима који користе обновљиве енергије, тема су овог рада.
AB  - The development of renewable energy systems requires the use of sophisticated techniques for an
accurate estimation of the available energy potential and for effective control and optimization of systems operation. The common feature of artificial intelligence methods is that they employ computer systems to perform tasks which require intelligent behavior, such as learning, reasoning, problem solving and decision making under uncertainty. This can be particularly beneficial in modeling, analysis, optimization and prediction of the performance and control of renewable energy systems and more efficient energy use. These systems are highly nonlinear, complex and dynamic, where the underlying physical relationships are not fully understood and the available data are often noisy and/or incomplete. Multi-parameter and multi-criteria aspects of the design of these systems are not easily handled using analytical methods, physical models or numerical methods. Artificial intelligence techniques may provide a promising and reliable alternative, or a complement, to the traditional process-based or statistical approaches used in the energy
efficiency and renewable energy systems. They enable to study these systems without any knowledge of the exact relations governing their operation, and once trained, allow performing as complex tasks as prediction, modeling, identification, optimization, forecasting and control. Artificial neural networks and support vector machine, as commonly used artificial intelligence methodologies, and their application in the energy efficiency and renewable energy systems are presented.
PB  - Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
PB  - Društvo za procesnu tehniku
C3  - Proceedings of the 31st International Congress on Process Industry PROCESING '18, 6-8 june, 2018, Bajina Bašta, Serbia
T1  - Application of Artificial Intelligence Methods in Renewable Energy Systemts and Energy Efficiency
T1  - Примена метода вештачке интелигенције у обновљивим изворима енергије и енергетској ефикасности
EP  - 81
SP  - 63
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6048
ER  - 

@conference{
author = "Jovanović, Radiša and Božić, Ivan",
year = "2018",
abstract = "Развој система који користе обновљиве изворе енергије захтева примену софистицираних
техника у циљу тачне процене расположивог енергетског потенцијала и њиховог eфикасног управљања и оптимизације. Основна карактеристика метода вештачке интелигенције је да оне користе рачунарске системе за извршавање задатака који захтевају интелигентно понашање, као што су учење, расуђивање, решавање проблема и доношење одлука у присуству неизвесности. То посебно може бити корисно у моделовању, анализи, оптимизацији и предикцији перформанси и управљању система са обновљивим енергијама и ефикаснијој употреби енергије у термоенергетским, термотехничким и процесним постројењима. Ови системи су изразито нелинеарни, сложени и динамички, где основни физички односи нису у потпуности разјашњени и где су доступни подаци често зашумљени и/или некомплетни. Вишепараметарски и вишекритеријумски аспект у пројектовању ових система није лако третирати применом аналитичких метода, физичких модела или нумеричких метода. Методе вештачке интелигенције могу да обезбеде обећавајућу и поуздану алтернативу, или допуну традиционалним детерминистичким и статистичким прилазима који се користе у енергетској ефикасности и обновљивим изворима енергије. Ове методе омогућавају изучавање система без икаквог познавања тачних релација које описују њихов рад, и једном када се обуче, дозвољавају извршавање сложених задатака као што су моделовање, предикција, идентификација, оптимизација и управљање. Вештачке неуронске мреже и метода потпорних вектора, као неке од најчешће коришћених методологија, и њихова примена у енергетској ефикасности и системима који користе обновљиве енергије, тема су овог рада., The development of renewable energy systems requires the use of sophisticated techniques for an
accurate estimation of the available energy potential and for effective control and optimization of systems operation. The common feature of artificial intelligence methods is that they employ computer systems to perform tasks which require intelligent behavior, such as learning, reasoning, problem solving and decision making under uncertainty. This can be particularly beneficial in modeling, analysis, optimization and prediction of the performance and control of renewable energy systems and more efficient energy use. These systems are highly nonlinear, complex and dynamic, where the underlying physical relationships are not fully understood and the available data are often noisy and/or incomplete. Multi-parameter and multi-criteria aspects of the design of these systems are not easily handled using analytical methods, physical models or numerical methods. Artificial intelligence techniques may provide a promising and reliable alternative, or a complement, to the traditional process-based or statistical approaches used in the energy
efficiency and renewable energy systems. They enable to study these systems without any knowledge of the exact relations governing their operation, and once trained, allow performing as complex tasks as prediction, modeling, identification, optimization, forecasting and control. Artificial neural networks and support vector machine, as commonly used artificial intelligence methodologies, and their application in the energy efficiency and renewable energy systems are presented.",
publisher = "Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS), Društvo za procesnu tehniku",
journal = "Proceedings of the 31st International Congress on Process Industry PROCESING '18, 6-8 june, 2018, Bajina Bašta, Serbia",
title = "Application of Artificial Intelligence Methods in Renewable Energy Systemts and Energy Efficiency, Примена метода вештачке интелигенције у обновљивим изворима енергије и енергетској ефикасности",
pages = "81-63",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6048"
}

Jovanović, R.,& Božić, I.. (2018). Application of Artificial Intelligence Methods in Renewable Energy Systemts and Energy Efficiency. in Proceedings of the 31st International Congress on Process Industry PROCESING '18, 6-8 june, 2018, Bajina Bašta, Serbia
Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 63-81.
https://hdl.handle.net/21.15107/rcub_machinery_6048

Jovanović R, Božić I. Application of Artificial Intelligence Methods in Renewable Energy Systemts and Energy Efficiency. in Proceedings of the 31st International Congress on Process Industry PROCESING '18, 6-8 june, 2018, Bajina Bašta, Serbia. 2018;:63-81.
https://hdl.handle.net/21.15107/rcub_machinery_6048 .

Jovanović, Radiša, Božić, Ivan, "Application of Artificial Intelligence Methods in Renewable Energy Systemts and Energy Efficiency" in Proceedings of the 31st International Congress on Process Industry PROCESING '18, 6-8 june, 2018, Bajina Bašta, Serbia (2018):63-81,
https://hdl.handle.net/21.15107/rcub_machinery_6048 .

TY  - CONF
AU  - Ilić, Jovan
AU  - Božić, Ivan
AU  - Petković, Aleksandar
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6406
AB  - Safe and reliable exploitation of hydropower plants implies a due study of their behavior in different operating conditions, and the analysis of transient processes is necessary already at the design stage. Contemporary analyses of transient processes in hydropower plants involve complex and detailed numerical simulations of all normal, special and emergency operating regimes that can occur in exploitation. In order to protect these plants, it is necessary, among other things, to consider non-stationary phenomena in cases of various laws of closing the turbine guide vanes. In addition, one of the ways to protect hydropower plants with long derivative penstocks is the application of synchronous pressure regulating valves (SPRVs). SPRVs enable relatively fast closing of the turbine, while at the same time efficiently relieving the pipeline from increased pressure variations. SPRVs are mostly installed directly at turbine spiral case, and their opening law is often complementary to the closing law of guide vanes. Parameters of interest for proper adoption of the maneuvering laws of guide vanes and SPRVs comprise head envelopes along the penstock route, spiral case transient pressure and turbine transient over-speed. In this paper, the analyses of the previously mentioned water-hammer parameters were carried out for various multi-speed linear closing laws of Francis turbine guide vanes equipped with a SPRV.
PB  - Društvo termičara Srbije
C3  - International Conference „Power Plants 2018“
T1  - Analysis of transient processes for various laws of the guide vanes closing in Francis turbines with synchronous pressure regulating valves
IS  - E2018-071
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6406
ER  - 

@conference{
author = "Ilić, Jovan and Božić, Ivan and Petković, Aleksandar",
year = "2018",
abstract = "Safe and reliable exploitation of hydropower plants implies a due study of their behavior in different operating conditions, and the analysis of transient processes is necessary already at the design stage. Contemporary analyses of transient processes in hydropower plants involve complex and detailed numerical simulations of all normal, special and emergency operating regimes that can occur in exploitation. In order to protect these plants, it is necessary, among other things, to consider non-stationary phenomena in cases of various laws of closing the turbine guide vanes. In addition, one of the ways to protect hydropower plants with long derivative penstocks is the application of synchronous pressure regulating valves (SPRVs). SPRVs enable relatively fast closing of the turbine, while at the same time efficiently relieving the pipeline from increased pressure variations. SPRVs are mostly installed directly at turbine spiral case, and their opening law is often complementary to the closing law of guide vanes. Parameters of interest for proper adoption of the maneuvering laws of guide vanes and SPRVs comprise head envelopes along the penstock route, spiral case transient pressure and turbine transient over-speed. In this paper, the analyses of the previously mentioned water-hammer parameters were carried out for various multi-speed linear closing laws of Francis turbine guide vanes equipped with a SPRV.",
publisher = "Društvo termičara Srbije",
journal = "International Conference „Power Plants 2018“",
title = "Analysis of transient processes for various laws of the guide vanes closing in Francis turbines with synchronous pressure regulating valves",
number = "E2018-071",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6406"
}

Ilić, J., Božić, I.,& Petković, A.. (2018). Analysis of transient processes for various laws of the guide vanes closing in Francis turbines with synchronous pressure regulating valves. in International Conference „Power Plants 2018“
Društvo termičara Srbije.(E2018-071).
https://hdl.handle.net/21.15107/rcub_machinery_6406

Ilić J, Božić I, Petković A. Analysis of transient processes for various laws of the guide vanes closing in Francis turbines with synchronous pressure regulating valves. in International Conference „Power Plants 2018“. 2018;(E2018-071).
https://hdl.handle.net/21.15107/rcub_machinery_6406 .

Ilić, Jovan, Božić, Ivan, Petković, Aleksandar, "Analysis of transient processes for various laws of the guide vanes closing in Francis turbines with synchronous pressure regulating valves" in International Conference „Power Plants 2018“, no. E2018-071 (2018),
https://hdl.handle.net/21.15107/rcub_machinery_6406 .

TY  - CONF
AU  - Petković, Aleksandar
AU  - Božić, Ivan
AU  - Ilić, Jovan
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6382
AB  - Višedecenijska upotreba dostupnih nomograma, grafičkih metoda i verižnih jednačina, pa zatim  uprošćenih numeričkih modela postrojenja vodili su, najčešće, ka usvajanju vodostana kao proverene i  najprimenjivanije mere zaštite derivacionih hidroelektrana sa reakcijskim turbinama. Izbor vodostana kao mere  zaštite ovakvih postrojenja nije obavezno i najprikladnije rešenje sa stanovišta sveukupnih tehno-ekonomskih  pokazatelja. Primena dobro poznatih mera zaštite postrojenja na bazi sinhronih regulatora, nije bila dovoljno  zastupljena, jer su potrebne analize zahtevale složene matematičke modele postrojenja i zahtevne numeričke  simulacije. U radu je, na osnovu detaljne komparativne tehno-ekonomske analize jedne novoprojektovane 
hidroelektrane, prikazano preimućstvo rešenja sa sinhronim regulatorima nad rešenjem sa vodostanom, ispunjavajući iste kriterijume u pogledu bezbednosti postrojenja.
PB  - Univerzitet u Beogradu, Građevinski fakultet
C3  - Zbornik radova 18. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Niš, 25-26. oktobar 2018
T1  - Komparativna analiza primene vodostana i sinhronih regulatora turbina u cilju zaštite hidroelektrana pri prelaznim režimima
EP  - 529
SP  - 517
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6382
ER  - 

@conference{
author = "Petković, Aleksandar and Božić, Ivan and Ilić, Jovan",
year = "2018",
abstract = "Višedecenijska upotreba dostupnih nomograma, grafičkih metoda i verižnih jednačina, pa zatim  uprošćenih numeričkih modela postrojenja vodili su, najčešće, ka usvajanju vodostana kao proverene i  najprimenjivanije mere zaštite derivacionih hidroelektrana sa reakcijskim turbinama. Izbor vodostana kao mere  zaštite ovakvih postrojenja nije obavezno i najprikladnije rešenje sa stanovišta sveukupnih tehno-ekonomskih  pokazatelja. Primena dobro poznatih mera zaštite postrojenja na bazi sinhronih regulatora, nije bila dovoljno  zastupljena, jer su potrebne analize zahtevale složene matematičke modele postrojenja i zahtevne numeričke  simulacije. U radu je, na osnovu detaljne komparativne tehno-ekonomske analize jedne novoprojektovane 
hidroelektrane, prikazano preimućstvo rešenja sa sinhronim regulatorima nad rešenjem sa vodostanom, ispunjavajući iste kriterijume u pogledu bezbednosti postrojenja.",
publisher = "Univerzitet u Beogradu, Građevinski fakultet",
journal = "Zbornik radova 18. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Niš, 25-26. oktobar 2018",
title = "Komparativna analiza primene vodostana i sinhronih regulatora turbina u cilju zaštite hidroelektrana pri prelaznim režimima",
pages = "529-517",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6382"
}

Petković, A., Božić, I.,& Ilić, J.. (2018). Komparativna analiza primene vodostana i sinhronih regulatora turbina u cilju zaštite hidroelektrana pri prelaznim režimima. in Zbornik radova 18. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Niš, 25-26. oktobar 2018
Univerzitet u Beogradu, Građevinski fakultet., 517-529.
https://hdl.handle.net/21.15107/rcub_machinery_6382

Petković A, Božić I, Ilić J. Komparativna analiza primene vodostana i sinhronih regulatora turbina u cilju zaštite hidroelektrana pri prelaznim režimima. in Zbornik radova 18. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Niš, 25-26. oktobar 2018. 2018;:517-529.
https://hdl.handle.net/21.15107/rcub_machinery_6382 .

Petković, Aleksandar, Božić, Ivan, Ilić, Jovan, "Komparativna analiza primene vodostana i sinhronih regulatora turbina u cilju zaštite hidroelektrana pri prelaznim režimima" in Zbornik radova 18. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Niš, 25-26. oktobar 2018 (2018):517-529,
https://hdl.handle.net/21.15107/rcub_machinery_6382 .