高压电器2017，Vol.53Issue(11)：170-176,7.DOI:10.13296/j.1001-1609.hva.2017.11.028
雷电及操作冲击电压下几种典型油纸绝缘缺陷模型局部放电特征图谱的分析与比较
Analysis and Comparison of Partial Discharge Characteristic Spectrums of Several Typical Oil-paper Insulation Defect Models Under Lightning and Switching Impulse Voltage
摘要
Abstract
If partial discharge measurement is added to the impulse voltage test,the type and severity of a insulation fault of equipment can be detected more sensitively through analyzing the partial discharge quantity and characteristics.In this study,four kinds of typical defect models of oil-paper insulation were fabricated to simulate the electric field distributions under switching impulse voltage.The current sensor of self-integral Rogowski coil type was adopted to measure the high-frequency current of partial discharge.The four defect models of oil-paper insulation were tested under lightning and switching impulse voltage to reveal their partial discharge characteristics.Results showed that for same defect model,different switching impulse voltages resulted in significantly different waveform characteristics of partial discharge in time domain;while under the effect of same waveform of switching impulse voltage,the time-domain waveform characteristics of partial discharge showed clear difference for different insulation defect models.These results may be used to establish spectrum database of discharge characteristics corresponding to certain insulation defect model for identifying the partial discharge of different insulation fault types.关键词
雷电冲击电压/操作冲击电压/局部放电/绝缘缺陷/特征图谱Key words
lightning impulse voltage/switching impulse voltage/partial discharge/insulation defect/characteristic spectrum引用本文复制引用
邱进,陈江波,吴士普..雷电及操作冲击电压下几种典型油纸绝缘缺陷模型局部放电特征图谱的分析与比较[J].高压电器,2017,53(11):170-176,7.
