Algoritam za proračun uticaja promene temperature transformatorskog ulja na preciznost lokalizacije parcijalnog pražnjenja čisto akustičkom neiterativnom metodom u energetskom transformatoru
Algorithm for calculating influence of power transformer oil temperature change on the accuracy of allacoustic non-iterative partial discharge localization
dc.creator | Poluzanski, Vladimir S. | |
dc.creator | Kovačević, Uroš | |
dc.creator | Nikolić, Boško D. | |
dc.date.accessioned | 2022-09-19T18:33:22Z | |
dc.date.available | 2022-09-19T18:33:22Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 1451-2092 | |
dc.identifier.uri | https://machinery.mas.bg.ac.rs/handle/123456789/2909 | |
dc.description.abstract | Ovaj rad razmatra čisto akustičku metodu za lokalizaciju parcijalnog pražnjenja u energetskom transformatoru. Ova metoda se zasniva na matematičkom modelu koji koristi multilateraciju, princip vremenske razlike kašnjenja signala i neiterativni matematički algoritam. U ovom modelu pretpostavlja se da akustički signal prolazi jedino kroz transformatorsko ulje i da je brzina akustičkog signala konstantna. Brzina akustičkog signala u velikoj meri zavisi od temperature transformatorskog ulja što znači da se i temperatura transformatorskog ulja smatra konstantnom. U realnim uslovima, sa aspekta fizike, termodinamike fluida, konstrukcije transformatora itd., ova pretpostavka je najblaže rečeno velika. Upravo zato se u ovom radu istražuje uticaj promene temperature transformatorskog ulja (promene brzine akustičkog signala) na preciznost razmatrane metode. Za tu namenu, dizajniran je algoritam i implementiran u programskom jeziku Visual C#. Na osnovu sprovedenih simulacija stečena su nova saznanja o interakciji između temperature transformatorskog ulja i položaja akustičkih senzora. Ova interakcija dovela je do značajne razlike u preciznosti neiterativnog matematičkog algoritma za različite položaje akustičkih senzora pri promeni temperature transformatorskog ulja. Kako bi se uočena interakcija maksimalno iskoristila za unapređenje preciznosti razmatrane metode, predloženi su određeni koraci za dalje istraživanje i razvoj. | sr |
dc.description.abstract | This article investigates the all-acoustic method for partial discharge localization in a power transformer. This method is based on mathematical model that uses multilateration with Time Difference of Arrival (TDOA) principle and non-itterative mathematical algorithm. In this model, it is assumed that acoustic signal propagates only through transformer oil and that the velocity of acoustic signal is constant. Acoustic signal velocity is largely dependent on transformer oil temperature meaning that oil temperature is also considered to be constant. In reality if we look from the perspective of physics, thermo dynamics of fluids, transformer construction etc. this approximation is enormous. Therefore, influence of power transformer oil temperature change (velocity of acoustic signal change) on the accuracy of this method is investigated. For that purpose special algorithm is designed and implemented in Visual C# programming language. Based on conducted simulations, further knowledge is gained about interaction between transformer oil temperature and placement of acoustic sensors. This interaction produced significant disparity in noniterative algorithm's accuracy for different sensor positions with oil temperature change. In order to fully take advantage of noticed interaction, certain steps for further research and development are proposed. | en |
dc.publisher | Univerzitet u Beogradu - Mašinski fakultet, Beograd | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | FME Transactions | |
dc.subject | software | en |
dc.subject | sensor placement | en |
dc.subject | power transformer | en |
dc.subject | partial discharge | en |
dc.subject | oil temperature | en |
dc.subject | input variables interaction | en |
dc.subject | elementary sensitivity | en |
dc.subject | acoustic measurement | en |
dc.title | Algoritam za proračun uticaja promene temperature transformatorskog ulja na preciznost lokalizacije parcijalnog pražnjenja čisto akustičkom neiterativnom metodom u energetskom transformatoru | sr |
dc.title | Algorithm for calculating influence of power transformer oil temperature change on the accuracy of allacoustic non-iterative partial discharge localization | en |
dc.type | article | |
dc.rights.license | BY | |
dc.citation.epage | 193 | |
dc.citation.issue | 2 | |
dc.citation.other | 46(2): 183-193 | |
dc.citation.rank | M24 | |
dc.citation.spage | 183 | |
dc.citation.volume | 46 | |
dc.identifier.doi | 10.5937/fmet1802183P | |
dc.identifier.fulltext | http://machinery.mas.bg.ac.rs/bitstream/id/1602/2906.pdf | |
dc.identifier.scopus | 2-s2.0-85041705769 | |
dc.identifier.wos | 000437022100006 | |
dc.type.version | publishedVersion |