The Influence of the Breakdown Electric Field in the Lightning Corona Sheath on the Dynamics of the Return Stroke
Samo za registrovane korisnike
2012
Autori
Trifković, ZoranPonjavić, Milan
Šumarac Pavlović, Dragana
Radosavljević, Ana
Cvetić, Jovan
Heidler, Fridolin
Đurić, Radivoje
Konferencijski prilog (Objavljena verzija)
,
IEEE
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
A generalized lightning traveling current source
(GTCS) return stroke model has been used to examine the
characteristics of the lightning channel corona sheath
surrounding a thin channel core. The return stroke process is
modeled with positive charge coming from the channel core
discharging negative leader charge in the corona sheath. The
corona sheath model that predicts charge motion in the sheath is
used to derive sheath radius vs. time expressions during the
return stroke. According to the corona sheath model, previously
proposed by Maslowski and Rakov [2006] and Maslowski et al.
[2009], it consists of two zones, zone 1 (surrounding the channel
core with net positive charge) and zone 2 (surrounding zone 1
with negative charge). We adopted the assumption of a constant
electric field inside zone 1 of the corona sheath observed in
laboratory experimental research of corona discharges. We
examined the influence of different magnitudes of the breakdown
electric field a...t the boundaries of both zones on the dynamics of
the return stroke. This approach can be viewed as a
generalization of the corona sheath model given in the previous
study by Cvetic et al. [2011]. The calculations have shown that
the radii of zones 1 and 2 decrease with the increase of the
breakdown electric field in the corresponding zone. Similar
conclusion holds for the velocities of zone 1 and 2 boundaries.
However, their velocities are much lower (about three orders of
magnitude) than the return stroke velocity, Tausanovic et al.
[2010]. Simultaneously, a slight decrease of zero crossing time of
the velocity of zone 1 boundary, as well as a decrease of the
quotient of maximum radii of both zones are observed.
Ključne reči:
lightning return stroke / corona sheath dynamicsIzvor:
Austrian Electrotechnical Association, 2012Izdavač:
- IEEE
Finansiranje / projekti:
- Fizički i funkcionalni efekti interakcije zračenja sa elektrotehničkim i biološkim sistemima (RS-MESTD-Basic Research (BR or ON)-171007)
- Elektrodinamika atmosfere u urbanim sredinama Srbije (RS-MESTD-Technological Development (TD or TR)-37019)
Kolekcije
Institucija/grupa
Mašinski fakultetTY - CONF AU - Trifković, Zoran AU - Ponjavić, Milan AU - Šumarac Pavlović, Dragana AU - Radosavljević, Ana AU - Cvetić, Jovan AU - Heidler, Fridolin AU - Đurić, Radivoje PY - 2012 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4800 AB - A generalized lightning traveling current source (GTCS) return stroke model has been used to examine the characteristics of the lightning channel corona sheath surrounding a thin channel core. The return stroke process is modeled with positive charge coming from the channel core discharging negative leader charge in the corona sheath. The corona sheath model that predicts charge motion in the sheath is used to derive sheath radius vs. time expressions during the return stroke. According to the corona sheath model, previously proposed by Maslowski and Rakov [2006] and Maslowski et al. [2009], it consists of two zones, zone 1 (surrounding the channel core with net positive charge) and zone 2 (surrounding zone 1 with negative charge). We adopted the assumption of a constant electric field inside zone 1 of the corona sheath observed in laboratory experimental research of corona discharges. We examined the influence of different magnitudes of the breakdown electric field at the boundaries of both zones on the dynamics of the return stroke. This approach can be viewed as a generalization of the corona sheath model given in the previous study by Cvetic et al. [2011]. The calculations have shown that the radii of zones 1 and 2 decrease with the increase of the breakdown electric field in the corresponding zone. Similar conclusion holds for the velocities of zone 1 and 2 boundaries. However, their velocities are much lower (about three orders of magnitude) than the return stroke velocity, Tausanovic et al. [2010]. Simultaneously, a slight decrease of zero crossing time of the velocity of zone 1 boundary, as well as a decrease of the quotient of maximum radii of both zones are observed. PB - IEEE C3 - Austrian Electrotechnical Association T1 - The Influence of the Breakdown Electric Field in the Lightning Corona Sheath on the Dynamics of the Return Stroke DO - 10.1109/ICLP.2012.6344351 ER -
@conference{ author = "Trifković, Zoran and Ponjavić, Milan and Šumarac Pavlović, Dragana and Radosavljević, Ana and Cvetić, Jovan and Heidler, Fridolin and Đurić, Radivoje", year = "2012", abstract = "A generalized lightning traveling current source (GTCS) return stroke model has been used to examine the characteristics of the lightning channel corona sheath surrounding a thin channel core. The return stroke process is modeled with positive charge coming from the channel core discharging negative leader charge in the corona sheath. The corona sheath model that predicts charge motion in the sheath is used to derive sheath radius vs. time expressions during the return stroke. According to the corona sheath model, previously proposed by Maslowski and Rakov [2006] and Maslowski et al. [2009], it consists of two zones, zone 1 (surrounding the channel core with net positive charge) and zone 2 (surrounding zone 1 with negative charge). We adopted the assumption of a constant electric field inside zone 1 of the corona sheath observed in laboratory experimental research of corona discharges. We examined the influence of different magnitudes of the breakdown electric field at the boundaries of both zones on the dynamics of the return stroke. This approach can be viewed as a generalization of the corona sheath model given in the previous study by Cvetic et al. [2011]. The calculations have shown that the radii of zones 1 and 2 decrease with the increase of the breakdown electric field in the corresponding zone. Similar conclusion holds for the velocities of zone 1 and 2 boundaries. However, their velocities are much lower (about three orders of magnitude) than the return stroke velocity, Tausanovic et al. [2010]. Simultaneously, a slight decrease of zero crossing time of the velocity of zone 1 boundary, as well as a decrease of the quotient of maximum radii of both zones are observed.", publisher = "IEEE", journal = "Austrian Electrotechnical Association", title = "The Influence of the Breakdown Electric Field in the Lightning Corona Sheath on the Dynamics of the Return Stroke", doi = "10.1109/ICLP.2012.6344351" }
Trifković, Z., Ponjavić, M., Šumarac Pavlović, D., Radosavljević, A., Cvetić, J., Heidler, F.,& Đurić, R.. (2012). The Influence of the Breakdown Electric Field in the Lightning Corona Sheath on the Dynamics of the Return Stroke. in Austrian Electrotechnical Association IEEE.. https://doi.org/10.1109/ICLP.2012.6344351
Trifković Z, Ponjavić M, Šumarac Pavlović D, Radosavljević A, Cvetić J, Heidler F, Đurić R. The Influence of the Breakdown Electric Field in the Lightning Corona Sheath on the Dynamics of the Return Stroke. in Austrian Electrotechnical Association. 2012;. doi:10.1109/ICLP.2012.6344351 .
Trifković, Zoran, Ponjavić, Milan, Šumarac Pavlović, Dragana, Radosavljević, Ana, Cvetić, Jovan, Heidler, Fridolin, Đurić, Radivoje, "The Influence of the Breakdown Electric Field in the Lightning Corona Sheath on the Dynamics of the Return Stroke" in Austrian Electrotechnical Association (2012), https://doi.org/10.1109/ICLP.2012.6344351 . .