摘要
研究了串联电容补偿对继电保护的影响 ,特别针对当前应用比较广泛的 LFP— 90 1 /90 2微机线路保护研究了当保护背后系统等效阻抗 Zs大于和小于 ZC 两种情况下对保护正确动作的影响 ,同时还比较分析了保护电压分别取自母线侧和电容器后的线路侧两种不同方案的优劣 ,最终得出了 LFP— 90 1 /90
This paper presents some research works on the problems encountered in the line protection with series capacitorcompensation. and especially pays more attention to the effect of the widely used LFP-901/902 microcomputer--based lineprotection. The effect to the relay in two main circumstances individually is studied. The one is when the impedance on thebackside system of the relay is greater than the capacitor impedance. The other is when it is less than the capacitorimpedance. Furthermore, the advantages and the disadvantages when the voltage is got from the bus side and from the lineside are compared. Finally, through the research works, this paper draws a conclusion that the LFP-901/902 microcomputerbased line protection can be used in the series capacitor compensated lines.
出处
《电力系统自动化》
EI
CSCD
北大核心
2000年第10期36-39,52,共5页
Automation of Electric Power Systems
关键词
串联电容补偿
继电保护
线路保护
微机保护
series capacitor compensation
protective relaying
microcomputer-based line protection
