摘要
对某核电厂发生的稳压器压力控制信号瞬态波动的现象进行故障诊断。首先通过根本原因分析法(RCA)列举可能的故障原因,并借助信号仿真工具,层层分析和排除,定位异常点,最后通过对异常板件的离线试验,使故障复现,验证其故障原因定位的正确性。实际案例的故障诊断过程及结果表明:将真实工况信号作为仿真源注入仿真系统,比对实际和仿真控制系统各个环节信号的趋势和曲线可以实现故障的有效定位;对于信号偶发异常(阶跃、毛刺和波动)的故障诊断是一种简单有效的方法。
Diagnosis of the phenomenon of the pressure control signal fluctuation in nuclear power station and troubleshooting of the problem are carded out. Firstly, the RCA root cause analysis method is used to list the possible causes, and with signal simulation tool to position the abnormal module. And then some tests on the abnormal module offline is conducted to reproduce the fault, and the correctness of the fault location is verified. The real condition signal is used as the simulation source and injected into the control system. The signal trends between the real and simulation system is compared to troubleshoot the signal infrequent anomalies.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2014年第3期92-96,共5页
Nuclear Power Engineering
关键词
压力控制
稳压器
信号波动
信号仿真
故障诊断
Pressure control, Stabilizer, Signal fluctuation, Signal simulation, Fault Diagnosis
