Naslov
Potential benefits of using controlled switching technique in 400 kV network for mitigation of switching overvoltages

Autori
Filipovic-Grcic, B. ; Damjanovic, I. ; Zupan, A. ; Jurisic, B. ; Zupan, T.

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
SEERC 2021 - 3rd Conference of the South-East European Regional Council of CIGRE / Reich, Klemens - Beč : CIGRÉ, 2021, 1-10

Skup
The 3rd SEERC Conference 2021 (CIGRE SEERC)

Mjesto i datum
Beč, Austrija; online, 30.11.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Switching overvoltages, controlled switching, 400 kV circuit breakers, metal-oxide surge arresters.

Sažetak
This paper deals with transients caused by switching of uncompensated 400 kV transmission lines with capacitive voltage transformers installed at both line ends. Energization and automatic reclosure of transmission line were analysed by using EMTP-RV software. The simulation results showed that the controlled switching significantly reduces switching overvoltages, transient current and energy stress of station metal-oxide surge arresters in case of the transmission line energization and auto-reclosure. Consequently, this reduces mechanical and electromagnetic stresses of the high voltage equipment, and also prevents the unwanted operation of relay protection. The controlled switching can improve the reliability of restrike-free performance of circuit breakers. It can also provide economic benefits such as elimination of closing resistors and reduction of the insulation level of high- voltage equipment.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA