超高压串联补偿输电线路的潜供电流和恢复电压  

SECONDARY ARC CURRENT AND RECOVERY VOLTAGE OF SERIES COMPENSATED EHV TRANSMISSION LINE

作　　者：牛晓民[1] 王晓彤[1] 施围[1] 王其平[1] 

机构地区：[1]西安交通大学电气工程学院

出　　处：《电网技术》1998年第9期9-12,16,共5页Power System Technology

基　　金：国家自然基金委员会资助

摘　　要：同无串补超高压输电线路相比，串补线路的潜供电流和恢复电压含有低频分量。文章通过对一５００ｋＶ输电系统进行简化等值电路的分析，以及用ＥＭＴＰ进行仿真计算，阐述了超高压输电线路恢复电压的拍频特性及串补线路潜供电流和恢复电压低频特性的产生机理，分析了弧道电阻对串补线路潜供电流的自熄和单相重合闸成功率的影响。The secondary arc current and recovery voltage of series compensated EHV transmission line have low frequency component comparing with those of line without series compensation.In this paper, an analysis of simplified equivalent circuit and an EMTP simulation study based on a 500kV transmission system are presented. The mechanism of beat frequency characteristic of EHV transmission lines, the secondary arc current and recovery voltage low frequency characteristic of series compensated lines are explained. The influence of arc resistor on the extinguishing of secondary arc current and on the success ratio of single phase reclosing in series compensated lines is analysed.

关 键 词：串联补偿 潜供电流 恢复电压 输电线路 超高压 

分 类 号：TM726.1[电气工程—电力系统及自动化]