基于振蕩波檢測(cè)系統(tǒng)的電力電纜局部放電波形研究
張國(guó)棟1，田立斌2，王江林3，李華2
1 廣東電網(wǎng)公司惠州供電局，廣東 惠州 516001； 2 華南理工大學(xué)，廣東 廣州 510006；
3 廣州安電測(cè)控技術(shù)有限公司，廣東 廣州 510665
摘 要： 介紹了局部放電電流法檢測(cè)局部放電的基本原理，給出了振蕩波局部放電測(cè)試電路，對(duì)基于這一檢測(cè)原理的振蕩波局部放電測(cè)試系統(tǒng)檢測(cè)的波形信號(hào)進(jìn)行分析。研究表明振蕩波檢測(cè)系統(tǒng)檢測(cè)的局部放電信號(hào)會(huì)受電纜傳播特性的影響產(chǎn)生衰減，且檢測(cè)的信號(hào)波形基本上呈現(xiàn)脈沖型和脈沖振蕩衰減型兩種形態(tài)。
關(guān)鍵詞： 振蕩波；局部放電；脈沖電流法
中圖分類號(hào)：TM933；TM726.4 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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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