Multi Objective Optimal Method for New Energy Power Grid Considering Maximum Demand Response

Abstract

After the new energy access to distribution power grid, when new energy output is high, the power flow of the grid could be reversed probably and the overvoltage problem may be caused. In view of this, on the basis of the optimal allocation of reactive power compensation device of distribution network, this paper further introduces the demand response(DR) load, such as civil load and industrial load, to participate in the optimization. A multi-objective optimization operation method of power grid considering demand response is proposed. Based on the traditional power loss minimization and voltage deviation minimization, the new objective function is to increase the maximum utilization ratio of demand response in voltage and reactive power optimization process. And capacitors banks (CB), reactor banks (RB) and static var generator (SVG) and DR are used as control variables to optimize the voltage and reactive power of power grid, and the regulation effect is the best. Finally, IEEE 33 bus distribution system is used to test the proposed control method.