秦山核电二期工程P4信号误触发的原因分析与改进  

Cause Analysis and Improvement of P4 Signal False Triggering in Qinshan NPP PhaseⅡ

作　　者：饶迎华 RAO Yinghua(China Nuclear Power Operation Management Co,Ltd,Haiyan 314300,China)

机构地区：[1]中核核电运行管理有限公司,浙江海盐314300

出　　处：《电工技术》2023年第3期223-227,231,共6页Electric Engineering

摘　　要：对秦山核电二期工程反应堆保护系统停堆断路器的功能及组成、工作电源、P4阈值继电器及定期试验等方面进行论述,分析了秦山核电二期工程的P4信号(停堆断路器打开)存在的误发风险,如RPR 005UD丧失、接触不良、端子松动等都将误发P4信号。P4信号是贯穿于一、二回路之间的关键信号,对确保机组的安全运行至关重要。由于误发P4的可能性客观存在,因此针对如何应对虚假信号,提出了改进建议。In this paper,the functions and composition,working power supply,P4 threshold relay and periodic test of the reactor protection system of Qinshan Nuclear Power PhaseⅡProject are discussed.The risk of false emission of P4 signal(stop circuit breaker open)of Qinshan nuclear power phaseⅡ project was analyzed,such as loss of RPR 005UD,poor contact,loose terminal,etc.P4 signalis the key signal between the primary and secondary circuits,which is crucial to en-sure the safe operation of the unit.The possibility of triggering P4 by mistake exists obectively.In view of how to deal with false signals,some sugges tions are put forward.

关 键 词：核电厂 停堆断路器 风险 改进 

分 类 号：TM623[电气工程—电力系统及自动化]