[1]项恩新,王 科.基于远程耦合法的绝缘子泄漏电流监测及局部放电识别[J].电瓷避雷器,2020,(03):225-231.[doi:10.16188/j.isa.1003-8337.2020.03.035]
 XIANG Enxin,WANG Ke.Insulator Leakage Current Monitoring and Partial Discharge Identification Based on Remote Coupling Method[J].,2020,(03):225-231.[doi:10.16188/j.isa.1003-8337.2020.03.035]
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基于远程耦合法的绝缘子泄漏电流监测及局部放电识别()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年03期
页码:
225-231
栏目:
绝缘子
出版日期:
2020-06-25

文章信息/Info

Title:
Insulator Leakage Current Monitoring and Partial Discharge Identification Based on Remote Coupling Method
作者:
项恩新 王 科
(云南电网有限责任公司电力科学研究院, 昆明 650217)
Author(s):
XIANG Enxin WANG Ke
(Yunnan Electric Power Research Institute, Yunnan Power Co., Ltd., Kunming 650217, China)
关键词:
绝缘子 泄漏电流 放电识别 电磁信号耦合 峰度值
Keywords:
insulator leakage current discharge identification electromagnetic signal coupling kurtosis value
DOI:
10.16188/j.isa.1003-8337.2020.03.035
摘要:
电缆终端绝缘子的实时状态监测可以有效保证电力电缆线路的安全运行。为了解决绝缘子泄漏电流监测和放电识别的问题,首先提出了一种通过远程耦合磁场来监测绝缘子泄漏电流的方法。基于此方法,在实验室中测试典型临近干扰对绝缘子泄漏电流监测的影响,并讨论了检测系统的鲁棒性。继而开展了盐雾、清洁雾下不同伞形材质绝缘子的泄漏电流测试试验。根据试验结果,提出了基于泄漏电流峰度值的绝缘子局部放电识别方法。最后,研究结果表明,基于该远程耦合法测得的泄漏电流分布峰度值可用于识别闪络之前的染污绝缘子放电状态,同时峰度值不受传感器附近电晕放电和工频电流的影响。进而可为电力电缆线路运行状态监测及故障识别提供参考。
Abstract:
Real-time condition monitoring of cable terminal insulators can effectively ensure the safe operation of power cable lines. In order to solve the problem of insulator leakage current monitoring and discharge identification, a method basing on remote coupled magnetic field to detect insulator leakage current was proposed in this paper. Using this method, the influence of typical adjacent interference on the monitoring of insulator is tested in the laboratory, and the robust characteristics of the detection system are discussed. Then the leakage current measurement tests of different shed type and material insulators under both salt fog and clean fog conditions were conducted. Finally by the application of the measurement results, partial discharge identification method basing on leakage current kurtosis values was proposed. The results show that the kurtosis value of leakage current distribution measured based on the remote coupling method in this paper can be used to identify the discharge state of contaminated insulator before flashover, and the kurtosis value is not affected by corona discharge and power frequency current near the sensor. The research results can provide reference for the monitoring of power cable line operating state and fault identification.

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备注/Memo

备注/Memo:
收稿日期:2018-12-13 作者简介:项恩新(1990—),男,工程师,从事输配电电缆检测技术研究工作。
更新日期/Last Update: 2020-07-07