摘要
研究串联电容补偿对线路保护的影响具有重要意义。文中在导出串联电容补偿的平行双回线上各保护安装处的等值电源阻抗表达式的基础上，提出了方向继电器应用于串联电容补偿的平行双回线的一个新问题，即在电容器出口一端区内故障时，故障线路对测方向保护在高阻接地故障时可能判为反向拒动。EMTP仿真试验证实了理论分析结果。
It's important to study the effect of series capacitor compensation on line protection. Giving the equivalent source impedance representation at relaying point, this paper presents a new problem of application of directional relay to series capacitor compensated parallel double-circuit lines, that is. earth faults through high resistance. which occur on the capacitor side within the protected zone, will be wrongly judged as backward fault by the directional protection on the other side of the protected line.EMTP simulation results prove the conclusion.
出处
《电力系统自动化》
EI
CSCD
北大核心
1999年第22期20-23,53,共5页
Automation of Electric Power Systems
关键词
中联电容补偿
方向继电器
线路保护
继电保护
series capacitor compensation
parallel double-circuit line
directional relay
earth fault through high resistance
