局部放电脉冲电流波形分析研究  

Study on Pulse Current Waveform of Partial Discharge

作　　者：徐先新 黄家栋[1] 孙鹏[2] 徐肖伟[2] 王科[2] 彭晶[2] 项恩新 李毓中[3] 

机构地区：[1]华北电力大学,河北保定071000 [2]云南电网公司电力研究院,昆明650217 [3]甘肃省电力公司检修公司,兰州730050

出　　处：《云南电力技术》2013年第6期42-44,共3页Yunnan Electric Power

摘　　要：为了对局部放电检测中脉冲电流波形特征进行分析,搭建了三种空气中常见绝缘缺陷模型,即电晕放电、悬浮放电和沿面放电。利用高速数字示波器采集了三种缺陷的正负脉冲波形,通过去噪工具和信号处理工具对波形进行处理得到波形特征量。研究证明,脉冲电流法的正负脉冲波形在幅值上近似相等,但在其他几个特征量上却存在一些差异。In order to analysis characteristics of the pulse current waveform from partial discharge detection, designed three air in- sulation defect model, the corona, floating electrode and suface. Acquisition of positive and negative pulse waveform about the three defects, by denoising tools and signal processing tools for processing the waveform of the waveform feature amount. Studies have shown that pulsed current method of positive and negative pulse waveforms are approximately equal in magnitude, but certain differences in the several other features can be seen.

关 键 词：脉冲电流 波形 特征分析 

分 类 号：TM85[电气工程—高电压与绝缘技术]