摘要
研制了匹配阻抗取样器和微带耦合天线传感器 ,建立了一套能同时利用上述两种信号采集技术的测试系统。利用该系统研究了各种试样的局放波形和多种干扰信号 ,发现这两种测试方法得到的信号存在一定的对应关系。在空气中用两种采集系统研究同一试样 ,得到的放电波形基本相似 ,幅值之间存在一定比例关系 ;在绝缘油中得到的局部放电波形之间存在相位差 ;用两种采集方式采集的典型干扰信号波形十分相似。
A sampler of matched impedance and a coupled antenna are developed in this paper. Based on it, a measurement system, which can utilize these two methods, is developed. PD signals of several kinds of samples and signals of interference are measured by this system. The signals obtained by two methods are corresponding. The PD waveforms of one sample in air are similar and the amplitudes of the PD waveforms are proportional. While there is phase angle difference in the PD waveforms of one sample in insulating oil and the shape of the waveforms is also similar. The experimental results show that the two acquisition methods are comparable.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2001年第6期6-8,共3页
High Voltage Engineering
基金
国家自然科学基金重点项目 ( 5 98372 6 0 )
国家自然科学基金面上项目 ( 5 0 0 770 14 )
关键词
高电压
局部放电
检测
超宽频带
partial discharge ultra wideband time domain analysis contrastive study
