The source-network coordinated planning of active distribution system based on linear constraints

Abstract

To overcome the problems of poor convergence, high cost and long planning time of traditional methods, a source-network coordinated planning method of active distribution system based on linear constraints is proposed. Firstly, the objective function of source network collaborative planning of active distribution system is established, so as to build the source network collaborative planning model. Then, the system power balance, line power security and other constraints are analysed, and the line power constraints and node voltage constraints are transformed into linear constraints by sensitivity method. Finally, the artificial fish swarm algorithm is used to solve the model, and the output of the model is the source network cooperation planning result of the active distribution system. Experimental results show that this method achieves the convergence of the model solution algorithm in 30 times, the total planning cost is 3.512645 million yuan, and the planning time varies from 0.1 s to 0.5 s.