湖南电力 ›› 2023, Vol. 43 ›› Issue (2): 85-89.doi: 10.3969/j.issn.1008-0198.2023.02.014

• 新技术及应用 • 上一篇    下一篇

强感应电环境下500 kV变电站接地线防弧装置

张云翔1, 王煜1, 盛欢2, 李思霈2, 陈昊1, 朱凯3, 何嘉弘4   

  1. 1.国网江苏省电力有限公司南京供电分公司,江苏 南京 211102;
    2.南京苏逸实业有限公司,江苏 南京 210019;
    3.国网安徽省电力有限公司宿州供电分公司,安徽 宿州 234399;
    4.东南大学,江苏 南京 210096
  • 收稿日期:2022-10-24 修回日期:2022-12-19 出版日期:2023-04-25 发布日期:2023-05-06
  • 作者简介:张云翔(1971),男,高级工程师,从事输电运检工作。王煜(1992),男,工程师,通信作者,从事变电二次运检工作。盛欢(1974),男,高级工程师,从事配电网施工设计工作。李思霈(1984),男,高级工程师,从事电力建设技术工作。陈昊(1980),男,研究员高级工程师/高级技师,从事变电二次运检工作。朱凯(1989),男,工程师,从事继电保护工作。何嘉弘(1988),男,副教授,从事电力设备在线监测与高电压绝缘研究。

Device of Earth Wire Arc Preventing in 500 kV Substation under Strong Induced Electricity Environment

ZHANG Yunxiang1, WANG Yu1, SHENG Huan2, LI Sipei2, CHEN Hao1, ZHU Kai3, HE Jiahong4   

  1. 1. State Grid Nanjing Power Supply Company, Nanjing 211102,China;
    2. Nanjing Electricity Supply Industry General Corp., Nanjing 210019,China;
    3. State Grid Anhui Electric Power Company Suzhou Power Supply Company, Suzhou 234399,China;
    4. Southeast University,Nanjing 210096,China
  • Received:2022-10-24 Revised:2022-12-19 Online:2023-04-25 Published:2023-05-06

摘要: 检修过程中电气设备感应电压过高,当接地刀闸无法操作时需挂接临时接地线,挂接时引发的电弧故障影响设备安全运行。基于此,提出一种基于限流电抗器的接地线切换系统,该系统可以补偿瞬时电流,降低电压水平。工作过程中将过电压限制到合理值后,通过控制系统将接地状态切换为直接接地。应用结果表明,该装置不仅可有效防止接地过程感应电压产生的接地电弧,而且应用便捷、安全性高,能够大幅提高检修效率。

关键词: 感应电, 接地线, 限流电抗器, 防弧

Abstract: The induced voltage of the electrical equipment is too high during the overhaul.When the grounding switch can not be operated, it is necessary to connect the temporary grounding wire. The arc fault will affect the safe operation of the equipment. In this paper an anti-arc device for temporary grounding wire hanging is developed, and a grounding wire switching system based on the current limiting reactor is presented. This system can compensate the instantaneous current, and reduce the overvoltage level. Moreover,when the overvoltage is limited to a reasonable value, the grounding state is switched to direct grounding by control system. The application results show that the device can prevent the grounding arc caused by the induced voltage in the grounding process effectively,has the advantages of convenient installation and high security,and improve the efficiency greatly.

Key words: induced electricity, earth wire, current limiting reactor, arc preventing

中图分类号: