基于振荡波检测系统的电力电缆局部放电波形研究
张国栋1，田立斌2，王江林3，李华2
1 广东电网公司惠州供电局，广东 惠州 516001； 2 华南理工大学，广东 广州 510006；
3 广州安电测控技术有限公司，广东 广州 510665
摘 要： 介绍了局部放电电流法检测局部放电的基本原理，给出了振荡波局部放电测试电路，对基于这一检测原理的振荡波局部放电测试系统检测的波形信号进行分析。研究表明振荡波检测系统检测的局部放电信号会受电缆传播特性的影响产生衰减，且检测的信号波形基本上呈现脉冲型和脉冲振荡衰减型两种形态。
关键词： 振荡波；局部放电；脉冲电流法
中图分类号：TM933；TM726.4 文献标识码：A 文章编号：1007-3175(2013)11-0045-05
Power Cable Partial Discharge Waveform Analysis Based on Oscillatory Wave Test System
ZHANG Guo-dong1, TIAN Li-bin2, WANG Jiang-lin3, LI Hua2
1 Huizhou Power Grid Company of Guangdong Power Supply Bureau, Huizhou 516001, China; 2 South China University of Technology,Guangzhou 510006, China; 3 Guangzhou Andian Control Technology Company, Guangzhou 510665, China
Abstract: Introduction was made to the basic principle of partial discharge current method to test partial discharge. This paper gave the testing circuit of partial discharge based on oscillatory wave and analyzed waveform signals of oscillatory wave partial discharge test system based on the testing principle. The research result shows that the partial discharge signals affected by the propagation characteristics of power cable generated attenuation. The detected signal waveform basically presented pulse shape and pulse oscillatory attenuation shape.
Key words: oscillatory wave; partial discharge; pulse current method
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