Research on optimization of distribution network communication network structure based on invulnerability optimization model

Abstract

In order to improve the power supply reliability and economy of the distribution network, from the perspective of optimizing its network structure and connectivity, an invulnerability optimization model based on the shortest path multi-scenario and multi-objective is constructed. For the normal operation and various single post-fault scenarios, aiming at the strong destructive and unloading or the minimum load shedding respectively, through the branch exchange method, find the best anti-destructive power of the completed distribution network in each scenario. The network topology provides a new research idea for the optimization of the network structure of medium voltage distribution network. Invulnerability measure index S(G)=1, the strongest invulnerability, the invulnerability measure index of any non-fully connected network is 0<s(G)<1, the larger S(G) is, the more compact the network structure is and the more resistant it is. The optimization results based on the approximate network example of the IEEE33 node distribution network test system show the rationality and practicability of the research method.