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.
出处
《电力科学与技术学报》
CAS
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)
关键词
变压器
回复电压
非标准极化谱
残余电荷
transformer
return voltage
non-standard polarization spectrum
residual charge
