基于Petri网的变电站故障诊断方法

Substation Fault Diagnosis Using Petri Net

为提高配置多级继电保护的变电站故障诊断的效率 ,本文以Petri网络模型中变迁矢量的不同权重表示继电保护配置的级别 ,使得诊断结果中产生对应继电器和断路器信号的特定诊断标志 ,从而增强了故障信号的识别能力 .诊断过程通过单向矩阵运算实现 .真实变电站故障诊断仿真过程表明 ,该方法运算速度快。

In order to improve the efficiency of the substa ti on fault diagnosis with multiple protections, the proposed method describes prot ection grades by varied weights of the transition vector in the Petri net models . According to relays and circuit breakers, special markings are produced in the diagnosis results that enhance the identifying capability of error information. The process of fault diagnosis is accomplished by algebra matrixes calculation. An simulation on actual substation fault diagnosis process indicates that the i mproved method has fast calculation speed and high veracity.