Distribution Network Fault Location Method Based on Petri Net and Multi-Source Wide-Area Synchronization Information Fusion

To overcome the shortcomings of existing distribution network fault location technology, a method using a Petri network and multi-source wide-area synchronization information is proposed. The fault current situation of a distribution network with distributed generation is analyzed, and the corresponding switching function and fitness function are derived. The working principle of the fault indicator in the event of a fault is described for a distribution network with distributed power sources. Using the multi-source information contained in the network, such as protection devices, fault indicators, measurement meters, a fault diagnosis model based on fuzzy Petri nets is proposed. The basic reasoning method and the establishment principle of the fault diagnosis model are explained, and the corresponding fault judgment process. The proposed method is simulated and analyzed, and it is demonstrated that the method of using multi-source information fusion Petri nets effectively identifies the fault section of the distributed power distribution network.