摘要
介绍了河北大唐国际王滩发电有限责任公司高压抗燃油型数字电液调节系统(DEH)的电源配置情况,以及DEH失电时汽轮机跳闸停机保护方案的实现方式,分析了原设计方案存在的不足及安全隐患,通过机组大修对DEH失电保护方案进行优化,将单点保护改为"三取二"、"二取二"保护,同时对DEH控制柜电源失电报警进行了优化,提高了机组的安全性和可靠性。
The power supply configuration of high-pressure fire-resistant oil type DEH of Hebei Datang International Wangtan Power Generation Company Limited was introduced,and the implementation of steam turbine tripping shutdown protection scheme when the DEH power supply is failure was described.The defects and the hidden safety hazard in original design scheme were analyzed.The DEH power failure protection scheme was optimized in the unit overhaul.The original single point protection was changed to the 'two out of three' and 'two out of two'protection,the power failure alarm scheme of DEH control cabinet was optimized simultaneously.The safety and the reliability of the unit were improved.
出处
《华电技术》
CAS
2012年第11期6-9,25,共5页
HUADIAN TECHNOLOGY
关键词
600MW机组
数字电液调节系统
汽轮机
跳闸停机保护
保护优化
600MW unit
digital electro-hydraulic control system(DEH)
steam turbine
tripping shutdown protection
protection optimization
