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《Journal of Hubei University for Nationalities(Natural Science Edition)》 2018-01
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A Novel Scheme for Line Circuit Breaker Failure Protection

ZHANG Jianye;XIE Chunfang;TAN Aiguo;Enshi Power Supply Company,State Grid Hubei Electric Power Company;School of Information Engineering,Hubei University for Nationalities;  
The circuit breaker failure protection with compound voltage blocking has the problem of refusing to trip due to the insufficient sensitivity when a fault happens at the end of the long line.To solve this problem,this paper first analyzes the situation that the traditional circuit breaker failure protection refuse to act,and then the new circuit breaker failure protection of line based on substation area information is put forward:calculating local protection criterion to get acting signal at substation control layer,redundant current information is used to judge whether the breaker is cut off,and the voltage information of reclosure device to supplement the compound voltage blocking method of circuit breaker failure protection.The theoretical analysis and simulation results show that the new scheme of the circuit breaker failure protection based on substation area information sharing has higher reliability.
【Fund】: 国家自然科学基金项目(51177060);; 湖北省自然科学基金项目(2013CFC125)
【CateGory Index】: TM561
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