DEH系统顺控逻辑异常分析及优化

Abnormality Analysis and Optimization Measures for Sequential Control Logic in DEH system

针对DEH系统ATT顺控、启动顺控逻辑执行过程中出现的异常事件,从高压主汽门关闭时间合格判断逻辑优化和并网表征判断逻辑优化2个方面,分析了异常现象出现的原因,提出了优化措施,保证顺控逻辑安全、可靠执行。

In view of at the abnormal events during the execution of ATT sequential control and start sequential control logic of DEH system,this paper analyzes the causes of abnormal events occurred from two aspects of judgment logic optimizations for closing-time qualification of high pressure main stop valve and synchronization characterization,and proposes optimization measures to ensure the safe and reliable execution of sequential control logic.