基于Simulink的光伏电站直流电缆故障定位仿真研究  

DC cable fault location simulation based on Simulink in photovoltaic power station

作　　者：宋艳青[1] 李钊年[1] 刘允[1] 白辉全 

机构地区：[1]青海大学水利电力学院,青海西宁810016

出　　处：《青海大学学报（自然科学版）》2016年第3期93-99,共7页Journal of Qinghai University(Natural Science)

摘　　要：光伏电站中直流电缆量大面广,查找故障点费时费力,光伏发电企业损失巨大。本文以某光伏发电企业使用的ZR-YJV22直流电缆为例,采用db4和sym5小波法研究了直流电缆的在线故障检测及定位。仿真结果表明:sym5小波法的故障定位的相对误差在3%之内,具有较好的应用前景。DC cable is extensively used in the photovoltaic power station. Finding fault points of DC cable are time consuming and costly,and photovoltaic power generation companies suffer huge losses. Taking ZR- YJV22 cable as an example,db4 and sym5 wavelet method are used for on- line fault detection of DC cable. The simulation results show that the relative error of sym5 wavelet method of fault location is within 3% and has a good application prospect.

关 键 词：光伏电站 直流电缆 行波法 故障定位 仿真 

分 类 号：TM743[电气工程—电力系统及自动化]