陕西师范大学学报（自然科学版）2017，Vol.45Issue(6)：29-37,9.DOI:10.15983/j.cnki.jsnu.2017.06.262
基于超声波的XLPE电力电缆局部放电测量与分析
Measurement and analysis of partial discharge in XLPE power cable based on ultrasonic
摘要
Abstract
In order to judge the internal insulation status of cable accessories in time and accurately,to avoid the cable breakdown and cause a major accident,this paper studies the partial discharge of XLPE power cables.The discharge characteristics of three kinds of XLPE power cables are simulated in the laboratory environment.Three kinds of defective partial discharge characteristics of XLPE power cables are studied by ultrasonic inspection system.The ultrasonic signals of different defects are analyzed.The characteristics of the time domain and the phase spectrum of the signal are studied.The relationship between the voltage and the maximum discharge amplitude,the average discharge amplitude and the number of discharges is studied,and the typical discharge spectrum is drawn.The same defect type is stable and reproducible under the same conditions.The discharge process of different defect types is different,and the partial discharge spectrum,single pulse waveform and PRPD spectrum are obvious.It is of great significance to prevent the occurrence of cable accidents and to ensure the safe and stable operation of power system.关键词
对交联聚乙烯/缺陷模拟/局部放电/PRPD谱图/脉冲波形Key words
XLPE/defect simulation/partial discharge/PRPD spectrum/pulse waveform分类
数理科学引用本文复制引用
李继胜,曹维丽,刘蓉,罗勇芬..基于超声波的XLPE电力电缆局部放电测量与分析[J].陕西师范大学学报（自然科学版）,2017,45(6):29-37,9.基金项目
陕西省自然科学基金(2015GY130) （2015GY130）
中央高校基本科研业务费专项资金(GK201603023) （GK201603023）
