Research On Reliable Routing Optimization Method For Power Communication Network

With the large-scale interconnection of power grids and the rise of the energy Internet,the requirements for the construction of power communication networks have further increased.The system protection communication network is established on the basis of the traditional power communication network.On the one hand,it must meet the system protection requirements of the regional power grid,and on the other hand,it must meet the cross-regional exchange of power grid information.Therefore,it is of great practical significance to carry out research on reliable routing methods for system protection of communication private networks.In this paper,aiming at the business reliability of the system protection communication private network,the research on the system protection OTN communication private network reliable routing optimization research and the system protection communication private network cascade fault reliable routing optimization research are carried out.Firstly,the thesis establishes the OTN hierarchical model of the system protection communication private network,and proposes a reliable route optimization method for the system protection OTN communication private network.This method is based on redundant backup technology,network equalization technology and reliable routing technology,and fully considers the delay,hop count and reliability constraints of the optical and electrical layers of the OTN network,and establishes a system protection communication network OTN reliable routing optimization model to solve system protection The business reliable routing problem of the communication private network.The analysis of PSCPlanner simulation experiment results shows that the algorithm can effectively allocate the entire network node resources and improve the transmission reliability of the system protection communication private network.Aiming at the reliability problem caused by the strong coupling between the power network and the communication network of the system protection communication private network,a power-communication dual network coupling model of the system protection communication private network is established,and a reliable routing method for cascading faults of the system protection communication private network is proposed.This method introduces power cascading faults into the model,and then the improved reliable routing optimization method is applied to the system protection communication private network.Taking into account the spread of power grid faults across the network.the communication network transmission is affected,and the node importance characteristics are abstracted.Based on the multi-attribute decision model,the power network-communication network total node importance is constructed.The analysis of the Python simulation experiment results shows that the algorithm can cope with the impact of power cascading failures and has good communication reliability.