Merging Loop Current Regulation Strategy for Distribution Network Based on Particle Swarm Algorithm

Loop closing operation of distribution network is necessary to realize load transfer without power supply, but it may generate large loop closing current and lead to load transfer failure. In order to minimize the impact of loop closing current on load transfer, a control strategy is proposed to solve the problem of voltage overrun by adjusting the loop closing current, taking into account the change of the electrical quantity in the distribution network after accessing the distributed generator (DG), which will lead to the success of loop closing. By analyzing the generation mechanism and influencing factors of the loop closing current in the loop closing process, the electrical quantities affecting the loop closing current in the loop closing process are quantified, and then the regulation method of the loop closing current is constructed, and the regulation strategy of the loop closing current in distribution networks based on particle swarm optimization (PSO) is proposed. Examples show that the method can maximize the win-win situation of loop closing operation and distributed power supply, and effectively improve the security and reliability of the loop closing process.