Optimal allocation of combined distributed generation and reactive power compensation based on active management

• 1、State Key Laboratory of Power Ttransmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044,China

Abstract：In order to make full use of the active role of distributed generation (DG) and reactive power compensation equipment in improving voltage quality and reducing power loss, a comprehensive optimal allocation model of DG and reactive power compensation based on active management strategy was established. In the model, Latin hypercube sampling and K-means clustering are used to construct multi-scenario model, and active management control measures such as adjusting tap-changer, DG active power output and power factor, demand-side interruptible load are considered. A fast non-dominated sorting genetic algorithm with elite strategy (NSGA-II) is used to solve the optimal allocation model of DG and reactive power compensation with the objective of minimizing total voltage deviation and annual comprehensive cost. The optimal power flow algorithm based on interior point method is used to solve the model with the objective of minimizing active management cost, demand side management costand maximizingrenewable energy subsidy cost. The feasibility and effectiveness of the model are verified in the improved 25 node distribution system. The simulation results show that the DG and reactive power compensation equipment can play a better role under the active management framework.

Keywords： distribution network active management distributed generation reactive power compensation multi-scene