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Study on Anti-interference Technique of On-line Partial Discharge Detection for XLPE Power Cable Joints
Author(s): LIAO Yanqun, XU Yang, CUI Jiangjing, SUN Tingzuo, TANG Yuxiang
Pages: 54-
59,75
Year: 2010
Issue:
3
Journal: Guangdong Electric Power
Keyword: 电力电缆接头; 局部放电; 在线检测; 抗干扰技术;
Abstract: 在分析各种抗干扰措施的基础上,研究了小波分析及极性鉴别抗干扰技术在电缆接头局部放电检测中的应用,提出了以频谱分析、小波分析、设定阈值、极性鉴别为主,以相位开窗、时延鉴别等手段为辅的抗干扰方法,并通过对信号进行频谱分析,判断信号是否需要开相位窗,选用数字滤波和小波分析,最后经极性鉴别和时延鉴别的流程来进行电缆接头的局部放电测试.实验室和现场数据综合分析表明,该方法和流程适合在实验室和现场条件下进行交...
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