一种新颖的箱式变电站故障诊断系统

A novel method for intelligent fault diagnosis system of box-type substation

针对箱式变电站故障监测与诊断的特点,提出一种基于Petri网模型与故障树分析法相结合的故障诊断方法。采取Petri网的图形特性与故障树相结合的方法,将箱式变电站的可能故障区域建立数个Petri网子故障模型,解决传统箱式变电站Petri网模型既大且杂的问题,更可直观地显示出故障发生的具体元件。最后通过实例详细描述将箱式变电站的Petri网分割成数个子Petri网模型,并结合故障树快速寻找到发生故障的元件,诊断出发生故障的原因。

Aiming at the fault monitoring and diagnosis of the box-type substation,this paper presents a method of fault diagnosis based on Petri nets and fault tree analysis. By combining Petri nets and fault tree,it builds a number of Petri nets fault models of the box-type substations malfunctioned regional. It solves the problem that the traditional box-type substations Petri net model is too large and complicated.The method can diagnose the specific component failure occurred. At last,it describes how to divide boxtype substations Petri net model by the examples,finds out the fault component quickly by combining fault tree and diagnosis the cause of the malfunction.