摘要
准确的输电线路故障定位对电力系统的安全经济运行具有重要的意义。为实现输电线路故障定位,分析了基于电压行波法的输电线路故障定位方法,提出了故障定位系统的总体设计方案,设计了用于消除双端非同步采集误差的全球定位系统(GPS)同步时钟模块以及数据采集系统。采用波形相关分析算法来提取行波到达线路两端检测点的时间差,并设计了输电线路故障模拟实验。理论分析和模拟实验结果表明,该故障定位系统能够实现输电线路的精确故障定位。
The principle of transmission line fault location based on traveling waves was discussed,and a design program of transmission line fault location system was given.A global positioning system（GPS）synchronous clock eliminating error which results from non-synchronous sampling of the double terminal was designed,and the experiment of GPS synchronous clock test was established.Time difference of two-terminal lines was acquired according to the correlation analysis algorithm.Experiment was designed to simulate some kinds of transmission line grounding fault.Theoretical analysis and the model experiment results demonstrate that the transmission line fault location system has high fault location accuracy.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2011年第2期304-309,共6页
High Voltage Engineering
基金
国家重点基础研究发展计划(973计划)(2009CB724500)
重庆市科技攻关计划(CSTC.2010AC3051)~~
关键词
输电线路
故障定位
双端电压行波法
时间差
全球定位系统(GPS)
波形相关分析
transmission line
fault location
two-terminal voltage traveling wave
time difference
global positioning system（GPS）
waveform correlation analysis
