CPR1000核电厂DCS机柜失电分析

DCS Cabinet Power Loss Analysis for CPR 1000 Nuclear Power Plant

介绍了CPR1000核电厂数字化控制系统（DCS）的总体结构，以反应堆保护机柜（RPC）为基础，分析RPC的信号接口特性和信号关键路径节点的信号处理机制。结合RPC Ⅳ保护通道失电造成未能停堆的预期瞬变（ATWS）系统误发停堆信号的原因进行分析及优化，结果表明：对DCS机柜失电分析的研究是必要的，通过对RPC Ⅳ的给水流量信息进行优化和合理分配，可避免误发停堆信号。失电分析可优化仪控的设计，提高核电厂的可靠性。

The DCS overall structure of CRP1000 nuclear power plant was introduced . Based on the RPC ,the signal interface character and signal processing mechanism on the key root were analyzed .By the power loss analyzing of RPC ,the RPC loss power may lead reactor trip signal from anticipated transient without scram （ATWS） system .The results indicate that it is necessary to search DCS cabinet power loss analysis .Optimizing and assigning the main waterflow signals can avoid trigger reactor trip signal by mistake .The DCS cabinet power loss analysis can optimize the I＆ C （instrumentation and control） design and increase the nuclear plant’s reliability .