电器与能效管理技术 ›› 2020, Vol. 591 ›› Issue (6): 53-60.doi: 10.16628/j.cnki.2095-8188.2020.06.011

• 检测与试验 • 上一篇    下一篇

基于多传感器融合技术的电缆附件局部放电检测系统

李方利, 钱帅伟, 毛振宇, 王朋朋, 杜璇   

  1. 1. 广西电网有限责任公司 桂林供电局,广西 桂林 541000;
    2. 沈阳博英电力设计有限公司,辽宁 沈阳 110046
  • 收稿日期:2020-01-15 出版日期:2020-06-15 发布日期:2020-07-07
  • 作者简介:李方利(1985—),男,工程师,主要从事10kV电力电缆线路在线监测、绝缘诊断技术的研究及应用工作。
    钱帅伟(1983—),男,工程师,主要从事配电管理工作。
    毛振宇(1988—),男,工程师,主要从事配电网规划、配电线路运维、配网自动化方面的研究。

Cable Accessory Partial Discharge Detection System Based on Multi-Sensor Fusion Technology

LI Fangli, QIAN Shuaiwei, MAO Zhengyu, WANG Pengpeng, DU Xuan   

  1. 1. Guilin Power Supply Bureau,Guangxi Power Grid Co.,Ltd.,Guilin 541000,China;
    2. Shenyang Boyin Electric Power Design Co.,Ltd.,Shenyang 110046,China
  • Received:2020-01-15 Online:2020-06-15 Published:2020-07-07

摘要: 设计一种基于多传感器融合技术的电缆附件局部放电检测系统。系统基于高速采集卡的数据采集平台,通过超高频( UHF)传感器、超声波(AE)传感器和高频电流传感器(HFCT)的联合应用,实现对电缆绝缘状态的在线监测。同时,提出了一种局放信号去噪方法,可以将局部放电检测信号中纯噪声信号与局部放电脉冲信号区分开来,且不受局部放电脉冲个数和脉冲所在位置的限制。最后,构建了6类缺陷模型,分别研究其局部放电特征,并以此建立了数据库,为后续电缆局部放电研究提供参考依据。

关键词: 电缆附件, 在线监测, 局部放电, 多传感器

Abstract: A partial discharge(PD) detection system of cable accessories based on multi-sensor fusion technology was designed and implemented.Based on a high-speed acquisition card data acquisition platform,the detection system enables on-line detection of cable insulation conditions through the combination of ultra high frequency(UHF) sensors,ultrasonic(acoustic emission,AE) sensors and high frequency current transducers(HFCT).A PD signal denoising method was proposed,which can distinguish the pure noise signal part of the PD detection signal from the part containing the PD pulse signal,and it is not limited by the number of PD pulses and the position of the pulse.Finally,six defect models were constructed,and their partial discharge characteristics were studied separately.The database was established to provide a reference for the study of partial cable discharge.

Key words: cable accessories, on-line monitoring, partial discharge, multi-sensor

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