Multi-Period Reactive Power Optimization of Distribution Network Considering the Output Characteristics of Distributed Generation

With the gradually increase of the distributed generation (DG) in the distribution network, the impact of its output characteristics on the operation of the distribution network is gradually increasing. The distributed generation supply is usually formulated as a constant power model in the problem of reactive power optimization; However, as the injection power of DG varies with the nodal voltage, it is difficult to obtain the optimal solution in actual operation. A reactive power optimization method that considers the output characteristics of the distributed generation supply is proposed in the paper. Aiming at the problem that the genetic algorithm is easy to fall into the local optimal solution when solving the problem, the multiple population genetic algorithm is used to optimize the solution. Test results on the IEEE33 node distribution system verifies the effectiveness of the proposed method.