高电压技术2012，Vol.38Issue(8)：1930-1936,7.
采用微分去极化电流法解析变压器油纸绝缘的介质响应函数
Dielectric Response Function for Transformer Oil-paper Insulation Solved by the Method of Differential Depolarization Current
摘要
Abstract
The time domain dielectric response diagnosis technology is an effective nondestructive testing method for diagnosing transformer oil-paper insulation states.The dielectric response mathematical model of insulation is a crucial means of the time domain diagnosis.To accurately reflect the medium depolarization process,to determine the number of the relaxation which depolarization process contains,and to accurately identify the parameters for the model,according to the research results of dielectric physics,the radical exponential decay law was introduced into dielectric response function in order to make the function closer to the experimental rule in a variety of different conditions.At the same time,a differential depolarization current method is put forward in the modeling,solving a controversial problem of the number of relaxation,and realizing the solving of dielectric response function.The results show that the differential depolarization current method is accurate,providing a new idea for the time domain dielectric response diagnosis of insulation medium.关键词
微分去极化电流/参数解析/介质响应函数/油纸绝缘/变压器/微分器Key words
differential depolarization current/parameters identification/dielectric response function/oil-paper insulation/transformer/differentiator分类
信息技术与安全科学引用本文复制引用
李功新,江修波,蔡金锭,黄彦婕..采用微分去极化电流法解析变压器油纸绝缘的介质响应函数[J].高电压技术,2012,38(8):1930-1936,7.基金项目
国家自然科学基金 （）
福建省自然科学基金 （）
