华电技术 ›› 2015, Vol. 37 ›› Issue (4): 14-15.

• 研究与开发 • 上一篇    下一篇

提高1000MW机组保安系统可靠性的新方案

  

  1. (华电莱州发电有限公司,山东莱州〓261441)
  • 出版日期:2015-04-25 发布日期:2015-06-02

New scheme for improvement of reliability of emergency power supply system of 1000MW unit

  1. (Huadian Laizhou Power Generation Company Limited, Laizhou 261441, China)
  • Online:2015-04-25 Published:2015-06-02

摘要: 摘要:电厂400V保安系统担负着机组事故情况下为汽轮机、小机油系统油泵等重要负荷供电的关键任务,一旦保安系统中的柴油机组启动失败造成400V保安系统危急时刻无法供电,很可能造成重大事故和巨大损失。基于设计院对1000MW火电机组保安系统的常规设计,提出了一种新方案,可有效提高400V保安系统供电的可靠性。

关键词: 关键词:1000MW机组, 保安系统, 柴油机组, 电气联络, 运行方式, 检修

Abstract: Abstract:To provide power supply for oil pumps of the steam turbine and the feed pump turbine and other important loads under unit fault condition is the key task of the 400V emergency power supply system of power plant. The startup failure of the diesel generator set in the emergency power supply system will caused the 400V emergency power supply system to be not able to supply power under emergency condition, which may lead major accident and massive loss. Based on conventional design of the emergency power supply system for 1000MW unit given by design institute, a new scheme was proposed, which can improve the reliability of the 400V emergency power supply system effctively.

Key words: Keywords:1000MW unit, emergency power supply system, diesel generator unit, electrical contact, operation mode, overhaul