Title :
Protection for overvoltage of 40.5 kV vacuum circuit breaker switching off shunt reactors
Author :
Guan, Yonggang ; Liu, Weidong ; Gao, Wensheng ; Wu, Junhui ; Li, Wenyi ; Cheng, Tiehan
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
Based on the results of field tests of 40.5 kV vacuum circuit breakers switching off shunt reactors, the effects of metal oxide surge arrester (MOA) protections of several connecting types as well as C-R suppressers are compared in detail. In this switching situation, gapless combined MOAs and three-gap combined MOAs are helpful to suppress the overvoltage. Meanwhile, C-R suppressers can provide the most effective protection, and it is better to install them nearby the reactors rather than breakers.
Keywords :
arresters; overvoltage protection; reactors (electric); vacuum circuit breakers; C-R suppressers; metal oxide surge arrester; overvoltage protection; shunt reactors; three-gap combined MOA; vacuum circuit breaker; voltage 40.5 kV; Circuit breakers; Compounds; Inductors; Shunt (electrical); Surges; Switching circuits; Voltage control; C-R surge suppresser; MOA; Vaccum circuit breaker; overvoltage; protection; shunt reactor;
Conference_Titel :
Power Engineering and Automation Conference (PEAM), 2011 IEEE
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-9691-4
DOI :
10.1109/PEAM.2011.6135091
