中国电力 ›› 2018, Vol. 51 ›› Issue (9): 88-92,100.DOI: 10.11930/j.issn.1004-9649.201712054

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输电线路电晕放电的天线检测方法

夏云峰1, 宋新明1, 戚金凤2, 徐征2   

  1. 1. 广东电网有限责任公司东莞供电局, 广东 东莞 523000;
    2. 输配电装备及系统安全与新技术国家重点实验室(重庆大学), 重庆 400044
  • 收稿日期:2017-12-25 修回日期:2018-03-28 出版日期:2018-09-05 发布日期:2018-09-20
  • 作者简介:夏云峰(1982-),男,博士,高级工程师,从事高电压与绝缘技术、输变电设备运行与检修研究。E-mail:xyf0725@163.com
  • 基金资助:
    国家自然科学基金资助项目(51377182);中国博士后科学基金资助项目(2017M612606);广东电网有限责任公司科技项目(GDKJXM20162184)。

Antenna Detection Method for Corona Discharge of Transmission Lines

XIA Yunfeng1, SONG Xinming1, QI Jinfeng2, XU Zheng2   

  1. 1. Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd., Dongguan 523000, China;
    2. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
  • Received:2017-12-25 Revised:2018-03-28 Online:2018-09-05 Published:2018-09-20
  • Supported by:
    This work is supported by National Natural Science Foundation of China (No.51377182), China Postdoctoral Science Foundation (No.2017M612606) and Science and Technology Project of Guangdong Power Grid Co., Ltd. (No.GDKJXM20162184).

摘要: 检测输电线路的电晕放电情况可以反映线路运行状态并提供维护的参考信息,而现有的检测方法均存在缺陷,且不能广泛应用。提出了一种新的测量方法,即采用射频天线测量电晕放电的电磁场脉冲信号。将2组传统的对数周期天线90°正交形成圆极化对数周期天线,之后仿真该天线结构证明了其方向性、增益和测量频段符合设计要求。最终制作该天线测量了电磁信号,实验结果显示电晕放电的时域信号是高频振荡波,其FFT变换得到的频谱分布主要集中在200~350 MHz。

关键词: 输电线路, 故障, 电晕放电, 对数周期天线, 电磁信号, 检测方法

Abstract: Detection of corona discharge of the transmission line can reflect its health status and provide warning information for maintenance. Some existing detection methods are flawed and can't be used widely. This paper presents a new method by measuring the electromagnetic wave caused by corona discharge with RF antenna. Then a circularly polarized log-periodic antenna was designed by making two pairs of log-periodic antennas 90° orthogonal. Then this antenna was simulated, and its performance of direction, gain and frequency meets the design requirements. Finally it was manufactured to detect electromagnetic signals, the result shows that the time domain signal of corona discharge is a high frequency oscillation wave and its FFT main distributes between 200 MHz and 350 MHz.

Key words: transmission line, failure, corona discharge, log-periodic antenna, electromagnetic signal, test method

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