中国电力 ›› 2016, Vol. 49 ›› Issue (6): 90-94.DOI: 10.11930/j.issn.1004-9649.2016.06.090.05

• 电网 • 上一篇    下一篇

特高压直流输电线路低零值绝缘子带电检测装置

张显1,罗日成1,邹明1,潘俊文1,唐祥盛1,邹德华2   

  1. 1. 长沙理工大学 电气与信息工程学院,湖南 长沙 410004;
    2. 湖南省带电作业中心,湖南 长沙 410076
  • 收稿日期:2016-01-18 出版日期:2016-06-16 发布日期:2016-06-16
  • 作者简介:张显(1993-),男,河南虞城人,硕士研究生,从事输电线路及绝缘子运行维护方面的研究。E-mail: 1191693513@qq.com
  • 基金资助:
    国家自然科学基金资助项目(50977003)

Online Detection Device of Low or Zero Value Insulators in UHVDC Transmission Line

ZHANG Xian1, LUO Richeng1, ZOU Ming1, PAN Junwen1, TANG Xiangsheng1, ZOU Dehua2   

  1. 1. School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410004, China;
    2. Live Operations Center in Hunan, Changsha 410076, China
  • Received:2016-01-18 Online:2016-06-16 Published:2016-06-16
  • Supported by:
    This work is supported by National Natural Science Foundation of China (No. 50977003).

摘要: 泄漏电流是随时间变化的物理量,造成绝缘子绝缘电阻测量法检测困难,由于在线检测的绝缘子数量多,工作量大。为解决以上问题,设计了一种带电测量±800 kV特高压直流输电线路绝缘子绝缘电阻的检测装置。正常工况下控制该装置在耐张绝缘子串和垂直绝缘子串上的攀爬翻转,同时在不受泄漏电流影响的情况下完成绝缘子绝缘电阻检测工作。实验数据表明:该装置测量绝缘子绝缘电阻的误差在5%以内,能很好地判断出正常运行线路绝缘子是否为低值或零值绝缘子,进而判断绝缘子的优劣状态,达到实验目的。本装置具有结构简单,灵活性高,可靠性强的特点,具有较好的实用性。

关键词: 特高压直流输电, 带电检测, 绝缘子, 绝缘电阻, 检测装置

Abstract: Due to time variation of leakage current, it is difficult to measure insulator resistance. The large amount of insulators also lead to heavy workload during online measuring. A ±800 kV UHVDC transmission line insulator insulation resistance testing device is designed to solve the problem. The device can climb on tension insulator strings and vertical insulator strings, measure insulation resistance without impact of leakage current under normal condition. Experimental data show that error margin of insulation resistance measurements is within 5% range. The device has ability to detect low or zero resistance value of line insulators under normal operation. The device is simple, flexible, reliable and has strong practical value.

Key words: UHVDC, online detection, insulator, insulation resistance, detection device

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