超高压长距离输电线路故障暂态分量的研究  

Study on fault transient component of EHV long distance transmission lines

作　　者：王兴国[1] 黄少锋[1] 

机构地区：[1]华北电力大学电力系统保护与动态安全监控教育部重点实验室,北京102206

出　　处：《华北电力大学学报（自然科学版）》2009年第2期6-12,共7页Journal of North China Electric Power University：Natural Science Edition

摘　　要：利用Π型网络等值长距离输电线路,推导了频域下考虑线路分布电容,电源侧分布电容,串补电容,母线电容及并联电抗器时线路故障暂态分量的表达式,讨论了它们各自对故障暂态分量的影响,同时分析了在不同故障类型情况下,故障点两侧暂态分量的特征。最后利用ATP仿真软件对一500 kV系统进行了仿真,利用快速傅立叶(FFT)进行频谱分析,验证了理论分析的正确性。The transient of long distance transmission lines is more complex than that of short lines, this paper utilizes equivalent II- network to express long transmission lines, the computing formula in frequency domain is deduced con- sidering distributed capacitance of lines and source, series- compensated capacitance, bus capacitance and shunt reactor. It also discusses their influence respectively and analyses the characteristic of fault transient component at both sides of fault point in different fault types. The ressults have been proven by ATP procedure in a typical 500 - kv power transmission line.

关 键 词：输电线路 暂态分量 频谱分析 分布电容 串补电容 并联电抗器 母线电容 故障类型 

分 类 号：TM773[电气工程—电力系统及自动化]