论文部分内容阅读
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。
The fault diagnosis of transient voltage fluctuation of pressure control signal of voltage regulator occurred in a nuclear power plant is carried out. First of all, through root cause analysis (RCA) cited possible causes of failure, and through signal simulation tools, layers of analysis and exclusion, locate the anomaly point, and finally through the off-line test of abnormal plate, the fault recurrence, verify the cause of the malfunction Correct positioning. The actual case of the fault diagnosis process and the results show that: the real working condition signal as a simulation source into the simulation system, compared with actual and simulation control system, the signal trend and curve can achieve effective fault location; incidental signal anomalies (step , Glitches and fluctuations) fault diagnosis is a simple and effective method.