中国电力 ›› 2017, Vol. 50 ›› Issue (4): 77-80.DOI: 10.11930/j.issn.1004-9649.2017.04.077.04

• 电网 • 上一篇    下一篇

宜宾±800 kV换流站接地极线路断线故障分析

张刘春, 康鹏, 张翠霞   

  1. 中国电力科学研究院,北京 100192
  • 收稿日期:2016-06-24 出版日期:2017-04-20 发布日期:2017-04-13
  • 作者简介:张刘春(1977-),女,山东济宁人,博士,高级工程师,从事交直流电力系统过电压防护和绝缘配合以及高电压与绝缘技术研究。E-mail: zhangliuchun@epri.sgcc.com.cn

Research and Analysis of Electrode Line Breakage Fault of Yibin ±800 kV Converter Station

ZHANG Liuchun, KANG Peng, ZHANG Cuixia   

  1. China Electric Power Research Institute, Beijing 100192, China
  • Received:2016-06-24 Online:2017-04-20 Published:2017-04-13

摘要: 介绍了宾金直流输电线路金华换流站极Ⅱ±800 kV直流穿墙套管发生故障后,接地极线路断线故障过程。采用EMTP-ATP软件对故障前后系统电流为5 970 A和5 215 A时接地极导线和避雷线分流情况进行了仿真计算,并与录波图进行了比较。根据计算结果分析了绝缘子掉串及导线断线原因,以及避雷线熔断原因。提出了接地极线路绝缘配置建议。

关键词: ±, 800 kV, 接地极, 导线, 避雷线, 断线故障

Abstract: After fault occurred on ±800 kV DC wall bushing of pole II in Jinhua converter station, the grounding line also has breakage fault. By using ATP-EMTP, response of grounding electrode conductor and shielding wire is simulated with 5 970 A and 5 215 A fault current. The results are compared with recorded fault waveform. According to calculation results, the breakage reasons of insulator string and shielding wire are analyzed in detail. The recommended grounding line insulation configuration is also introduced.

Key words: ±, 800 kV, earth electrode, power conductor, shielding wire, transmission line breakage fault

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