摘要
介绍了大亚湾核电站900MW机组一次因电网三相短路故障诱发汽轮机超加速度保护动作,直至手动打闸停机的事件,对相关问题进行了分析,并提出了取消高压截止阀对超加速度保护响应的改进措施。通过完善相关涉网自动保护和控制策略,改善了电网及核电机组本身的安全稳定性。
In this paper, an incident in Daya Bay 900MW nuclear unit, in which the turbine-generator acceleration protection action was initiated by three-phase short circuit fault of power grid and then manually tripped by the operator, was introduced, and the related issues Were analyzed.An improvement measure to cancel the response of the high pressure steam valve to the acceleration protection have been put forward. The safety stability of the grid and nuclear generator unit has been improved by improving the related automatism and protection and their control strategy.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2009年第4期68-70,80,共4页
Nuclear Power Engineering
关键词
核电机组
超加速度保护
蒸汽阀快关
电网
可靠性
Nuclear generator unit, Acceleration protection, Fast valving, Power grid, Reliability
