Grid risk intelligent analysis system based on communication network and power grid coupling

In order to solve the problems such as lack of coupling analysis means between power communication network and power grid and lack of simulation auxiliary system, an intelligent analysis system of power network risk based on the coupling of communication network and power grid is designed and implemented. The system includes three modules, such as multi-source data coupling module, intelligent diagnosis module and maintenance auxiliary module. The coupling model of communication network and power grid is established, which includes five steps: initial setup, initial fault, sub-graph detection, communication service rerouting, dynamic PTN load updating and overload detection. Based on the communication network data, protection data, N-l analysis data and N-2 analysis data, the source side confidence algorithm based on time-sharing weight and multi-source power network fault diagnosis algorithm are designed. The deployment and application of the system improves the multi-source data fusion rate and fault detection accuracy in Panxi region.