Three-phase modeling of 40.5-kV vacuum circuit breaker switching off shunt reactors and overvoltage suppression measure analysis

2021 ◽  
Vol 194 ◽  
pp. 107058
Author(s):  
Yun Geng ◽  
Jinlong Dong ◽  
Xinggui Chen ◽  
Luyang Zhang ◽  
Jing Yan ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Vacuum Circuit Breaker ◽  
Three Phase ◽  
Measure Analysis ◽  
Shunt Reactors

Overvoltages of 40.5 kV vacuum circuit breaker switching off shunt reactors

2011 ◽  
Author(s):  
Yonggang Guan ◽  
Wensheng Gao ◽  
Weidong Liu ◽  
Ning Du ◽  
Zutao Xiang
Keyword(s):  
Circuit Breaker ◽  
Vacuum Circuit Breaker ◽  
Shunt Reactors

Restrike Modeling of Vacuum Circuit Breaker Switching Off Shunt Capacitor Banks with EMTP

2011 ◽  
Vol 383-390 ◽  
pp. 2287-2292
Author(s):  
Yong Yuan Wang ◽  
Sheng Hui Liu ◽  
Wen Ze Liu ◽  
Ke Ying Wang
Keyword(s):  
Circuit Breaker ◽  
Circuit Breakers ◽  
Vacuum Circuit Breaker ◽  
Three Phase ◽  
Two Phases ◽  
Shunt Capacitors ◽  
Recovery Voltage ◽  
Shunt Capacitor ◽  
Variation Trends ◽  
Theoretical Results

The shunt power capacitors are used as a reactive compensator while vacuum circuit breakers are used to switch shunt capacitors in power grid. To research the high over-voltage during switching off the shunt capacitors and a vacuum circuit beaker restriked, the restriking model is built with three-phase vacuum circuit breakers, considering the capacitors’ energy storage characteristic and asynchronous operating. The over-voltage is harmful to the insulation and life-circle of the equipments and even threatens power system safe and stabile operation. The variation trends of both recovery voltage between the contacts and the capacitors voltage are theoretically deduced. The model based on a 220kV substation of Guangdong grid was built and the most serious case that breakers are restriked in two phases are numbered with EMTP. Compared with theoretical results, simulation results are valid and practical.

Protection for overvoltage of 40.5 kV vacuum circuit breaker switching off shunt reactors

2011 ◽  
Author(s):  
Yonggang Guan ◽  
Weidong Liu ◽  
Wensheng Gao ◽  
Junhui Wu ◽  
Wenyi Li ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Vacuum Circuit Breaker ◽  
Shunt Reactors

An Electromagnetically Actuated Vacuum Circuit Breaker Developed by Electromagnetic Analysis Coupled with Motion

2004 ◽  
Vol 124 (2) ◽  
pp. 321-326 ◽  
Author(s):  
Toshie Takeuchi ◽  
Takafumi Nakagawa ◽  
Mitsuru Tsukima ◽  
Kenichi Koyama ◽  
Nobumoto Tohya ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Electromagnetic Analysis ◽  
Vacuum Circuit Breaker ◽  
Electromagnetically Actuated
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