绝缘纸板老化对局部放电脉冲参数的影响(英文)  

Influence of Pressboard Aging on PD Pulse Parameters

作　　者：李军浩 王颂 靳巍 李彦明 

机构地区：[1]Department of High Voltage,School of Electrical Engineering,Xi'an Jiaotong University [2]Guangzhou Bureau,EHV Power Transmission Company,China South Grid [3]Zhengzhou Power Company

出　　处：《高电压技术》2011年第11期2758-2762,共5页High Voltage Engineering

基　　金：Supported by Fundamental Research Funds for the Central Univcersities;National Natural Science Foundation of China (50977075);National Basic Research Program of China(973 Program) (2011CB209404)

摘　　要：Combination of pressboard and mineral oil continues to be the choice of materials used as the insulation dielectric media in large transformers.The purpose of the reported study is to investigate the influence of pressboard aging on PD(partial discharge) pulse parameters.Ultra wide band(UWB) time-resolved PD pulse measurements were carried out on gas void inside pressboard.The rise rime,full time and width time of PD pulse in different aging degree pressboard are obtained.The result is helpful to better understanding the influence of the aging of pressboard on PD measurement and insulation diagnostics in power transformers.Combination of pressboard and mineral oil continues to be the choice of materials used as the insulation die- lectric media in large transformers. The purpose of the reported study is to investigate the influence of pressboard ag- ing on PD （partial discharge） pulse parameters. Ultra wide band （UWB） time-resolved PD pulse measurements were carried out on gas void inside pressboard. The rise rime, full time and width time of PD pulse in different aging degree pressboard are obtained. The result is helpful to better understanding the influence of the aging of pressboard on PD measurement and insulation diagnostics in power transformers.

关 键 词：partial discharge PULSE AGING WAVELET oil/paper transformer 

分 类 号：TM41[电气工程—电器]