Research on Re-routing Mechanism Based on Business Risk in Power Communication Network

With the construction of the smart grid with UHV as the backbone grid, the requirements for the “three lines of defense” security defense function of the power system are more stringent. The communication system of the real-time wide-area stable control business currently under construction is large in scale and complicated in structure, the primary and secondary equipment involved in the power increase, and the probability of failure of the power communication network carrying the business increases due to various unexpected factors. When the communication network node or link is interrupted, how to restore the stable control business of the bearer needs to construct a complete rerouting mechanism. This paper proposes a re-routing mechanism based on the business risk for the power communication transmission network. According to the requirements of the grid business importance and the delay constraints, the optimization model of the network risk minimization is constructed, and the Yen algorithm and the genetic algorithm are integrated to realize the business routing method. Through the simulation analysis, the proposed method can quickly realize the fast switching and recovery of the stable control business for the high-risk scenarios such as business interruption caused by different incentives.