YANG Bo1, CHEN Qing-xin21.Xi'an Thermal Power Research Institute Co Ltd. AN APPROACH TO TRIPPING BAR OF CIRCUIT BREAKER AND IT'S MALFUNCTION PROTECTING CONFIGURATION[J]. Thermal power generation, 2010, 39(1): 109-112.
YANG Bo1, CHEN Qing-xin21.Xi'an Thermal Power Research Institute Co Ltd. AN APPROACH TO TRIPPING BAR OF CIRCUIT BREAKER AND IT'S MALFUNCTION PROTECTING CONFIGURATION[J]. Thermal power generation, 2010, 39(1): 109-112.DOI:
Combining situation of malfunction protecting configuration for circuit breakers on high-voltage side of the main transformers in 10 power plants under Huadian Group with accident cases of circuit breaker's malfunction
the causes leading to tripping bar accident have been analysed
and the reasonable selection of malfunction protecting configuration for circuit breakers on the high-voltage side of main transformers in power plants being put forward.It should be fully according to the requirements of technical code for relay protection
no lockout device being configurated.The malfunction protecting configuration of circuit breakers on side of generator's transformer should select negative sequence or zero sequence current as the criterion