摘要
国内关于直流电压下局部放电的研究甚为不足。论述直流电压下电介质局部放电的物理机制和损伤机制,分析直流局放相邻两次时间间隔及放电重复率的两个重要概念,讨论极化效应和温度效应对直流局放的影响,综述国内外关于直流局放信号的特征提取及模式识别方法,介绍直流局放抗干扰措施的研究进展。
The research on partial discharge under DC voltage is obviously insufficient in China. The physical and damage mechanism of PD under DC voltage is discussed. The concepts of time interval between two discharges and repetition rate of partial discharge are analyzed. The influences about the polarization and temperature effect upon partial discharge under DC voltage are discussed. The feature extraction and pattern recognition methods at home and abroad concerning signal of PD under DC voltage are summarized. The research developments about ways of anti-jamming during PD measurements are introduced.
出处
《智能电网》
2014年第10期19-25,共7页
Smart Grid
关键词
直流电压
局部放电
机制
特征提取
抗干扰
DC voltage
partial discharge
mechanism
feature extraction
anti-jamming
