湖南电力 ›› 2025, Vol. 45 ›› Issue (3): 89-94.doi: 10.3969/j.issn.1008-0198.2025.03.013

• 电网运行与控制 • 上一篇    下一篇

柔直换流站阀冷系统主循环泵故障原因分析及隐患治理

赵占明, 高宏达, 滕孟锋, 张青元, 柳杨   

  1. 国网冀北电力有限公司超高压分公司,北京 102488
  • 收稿日期:2025-04-09 修回日期:2025-04-27 发布日期:2025-07-02
  • 通信作者: 赵占明(1995),男,工程师,从事柔性直流输电工作。

Fault Cause Analysis and Hidden Danger Management of Main Circulating Pump for Valve Cooling System in a Flexible DC Converter Station

ZHAO Zhanming, GAO Hongda, TENG Mengfeng, ZHANG Qingyuan, LiU Yang   

  1. State Grid Jibei Electric Power Company Limited, EHV Power Transmission Company,Beijing 102488, China
  • Received:2025-04-09 Revised:2025-04-27 Published:2025-07-02

摘要: 以某±500 kV换流站阀冷系统主循环泵故障为例,介绍故障处理措施,分析故障原因,得出主循环泵选用的弹簧垫圈不合格导致泵轴紧固连接副失效(锁紧螺母松动)的结论。同时对该站其他在运主循环泵进行了隐患排查,为其他在运换流站主循环泵的安全运行和新建换流站主循环泵的选型提供参考。

关键词: 阀冷系统, 主循环泵, 单泵运行, 紧固连接副

Abstract: Taking the failure of the main circulating pump in the valve cooling system of a ±500 kV converter station as an example, this paper introduces the failure handling measures, analyzes the failure causes, and concludes that the use of unqualified spring washers for the main circulating pump leads to the failure of the pump shaft fastening connection pair (loosening of the lock nut). Meanwhile, potential hazard inspections are carried out on other in-service main circulating pumps in this station, providing references for the safe operation of main circulating pumps in other in-service converter stations and the selection of main circulating pumps for newly-built converter stations.

Key words: valve cooling system, main circulating pump, single pump operation, fastening components

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