基于多峰回复电压曲线诊断变压器绝缘状态  

Transformer insulation diagnosis based on Multi-peak return voltage curve

作　　者：江修波[1] 李功新 张涛[3] 黄彦婕[1] 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350002 [2]福建电力有限公司,福建福州350001 [3]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《电力科学与技术学报》2011年第3期46-51,共6页Journal of Electric Power Science And Technology

基　　金：福建省自然科学基金(2010J01283)

摘　　要：基于介质响应理论的回复电压方法能有效评估单一峰值极化谱的变压器固体绝缘的水分含量,而对于含有多峰值点的极化谱,很难准确评估其固体绝缘状态.针对影响回复电压极化谱的各种因素进行分析,提出判据和评估非标准极化谱的方法,提高了利用极化谱判断固体绝缘状况的可靠性和准确性。该方法在工程实际应用中具有参考价值.Return voltage measurement（RVM） is an effective dielectric response test method,which has been used to evaluate moisture level of solid insulation.In the process of field test,the obtained polarization spectrum is non-standard which is affected by many factors,and the insulation status of dielectric is hard to judge.Factors that impact field test return voltage polarization spectrum are analyzed,and methods of judging and explaining the non-standard polarization spectrum are presented in this paper.The reliability and preciseness of judging solid insulation status with polarization spectrum are improved.The proposed methods have great reference value in engineering application.

关 键 词：变压器 回复电压 非标准极化谱 残余电荷 

分 类 号：TM855[电气工程—高电压与绝缘技术]