Analysis and countermeasures on accident caused by incorrect starting signal of 500kV circuit breaker failure

Huadian Technology ›› 2010, Vol. 32 ›› Issue (7): 49-50.

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Analysis and countermeasures on accident caused by incorrect starting signal of 500kV circuit breaker failure

LU Junmin

Zhejiang Province Electric Power Construction Corporation Limited, Ningbo 315010, China

Received:1900-01-01 Revised:1900-01-01 Online:2010-07-25 Published:2010-07-25

Abstract

Abstract: In Tongbai Pumped Storage Power Plant, the main transformer protection incorrectly received the starting signal of 500kV circuit breaker failure several times, and which caused the breaker incorrectly tripped. The process of the accident was introduced, and the reasons of the accident were analyzed. After the relevant countermeasures were adopted, the normal operation of the main transformer protection was recovered.

Key words: main transformer protection, circuit breaker failure, improvement measure

LU Junmin. Analysis and countermeasures on accident caused by incorrect starting signal of 500kV circuit breaker failure[J]. Huadian Technology, 2010, 32(7): 49-50.

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Analysis and countermeasures on accident caused by incorrect starting signal of 500kV circuit breaker failure

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