LFP—901/902应用于串补线路的可行性研究  

RESEARCH ON APPROACH OF USING LFP-901/902 MICROCOMPUTER^BASEDLINE PROTECTION ON SERIES CAPACITOR COMPENSATED LINES

作　　者：叶远波[1] 

机构地区：[1]合肥供电局,合肥230022

出　　处：《电力系统自动化》2000年第10期36-39,52,共5页Automation of Electric Power Systems

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 /90This 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.

关 键 词：串联电容补偿 继电保护 线路保护 微机保护 

分 类 号：TM773[电气工程—电力系统及自动化]