华电技术 ›› 2018, Vol. 40 ›› Issue (6): 56-57.

• 技术交流 • 上一篇    下一篇

超超临界机组PCV阀控制系统优化策略

  

  1. 湖北西塞山发电有限公司,湖北黄石〓435000
  • 出版日期:2018-06-25 发布日期:2018-08-21

Optimization strategy of PCV valve control system for supercritical unit

  1. Hubei Xisaishan Power Generation Company Limited, Huangshi 435000, China
  • Online:2018-06-25 Published:2018-08-21

摘要:

湖北西塞山发电有限公司680MW超超临界机组压力释放阀(PCV阀)运行过程中出现误开启故障,分析了故障原因并提出了引入信号隔离栅、增加表决判断回路以及局部回路改造等策略,有效提升了PCV阀控制系统的可靠性。

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Abstract:

There was a false opening during the operation of pressure control valve (PCV) of 680MW ultrasupercritical unit of Hubei Xisaishan Power Generation Company Limited. The cause of the failure is analyzed and a scheme which includes signal isolation grid, increasing decision circuit , partially reformation on circuits are put forward, which effectively improved the reliability of PCV valve control system.

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