摘要
近年来电网继电保护运行水平有所提高，正确动作率逐年上升，但存在母线差动保护和断路器失灵保护正确动作率偏低等问题，分析了出现问题的原因，提出了改进意见。对有些微机保护误动的原因及微机保护装置硬、软件定型与规范化等问题进行了分析、讨论。指出全行业应重视上述三方面的问题，抓好保护的科研和管理工作。
Busbar differential protection, circuit breaker failure protection and microcomputer-based line protectionare detailed analyzed. Based on statistical data of protection operation.some reasons causing incorrectness ofprotection operation are found, such as incorrect processing of balance; restraint current in busbar protect;interference; trouble in communication channel of high frequency protection etc.Some ideas are presented to improvetheir rates of correct operation. Standardization of hardware and software of microcomputer-based protection sets isdiscussed.
出处
《电力系统自动化》
EI
CSCD
北大核心
1999年第3期1-3,共3页
Automation of Electric Power Systems
关键词
继电保护
母线差动保护
电力系统
电网
protective relaying, rate of correct operation, busbar differential protection, circuit breaker failure protection
