华电技术 ›› 2015, Vol. 37 ›› Issue (12): 4-6.

• 研究与开发 • 上一篇    下一篇

JFZ-12B分相操作箱电压切换回路的改进

  

  1. 陕西华电瑶池发电有限公司, 陕西 彬县 713500
  • 出版日期:2015-12-25 发布日期:2016-02-02

Improvement of voltage switching circuit of JFZ-12B phase separated operation box

  1. Shanxi Huadian Yaochi Power Generation Company Limited,Binxian 713500,China
  • Online:2015-12-25 Published:2016-02-02

摘要:

摘要:JFZ-12B分相操作箱广泛应用于发电厂高压断路器,某电厂发生330kV母线失灵保护动作事故,经分析原因为分相操作箱电压切换回路故障所引发,针对电压切换回路存在的问题,提出了改进方案,有效避免了刀闸辅助接点接触不良引发的二次事故。

关键词: 关键词:电压切换, 回路, 保护, 事故分析

Abstract:

Abstract:JFZ phase separator operation box is widely used in the high voltage circuit breaker of the power plant.There occurred an accident that a 330kV bus protection failed to act in a certain power plant.The failure was analyzed and the results showed that it was the failure of the voltage switch that caused the accident.As for the problem of the voltage switch,new project was put forward. The project prevent the switches form secondary accidents caused by bad contacts effectively.

Key words: ">Keywords:">voltage switch, return circuit, protection, accident ">analysis