Research on Multi-Objective Reactive Power Optimal Control Strategy of Multi-energy New Power System

Abstract

As the penetration rate of new energy continues to increase, traditional thermal power units are gradually being replaced by clean energy, large-scale new energy clusters are sent to distant places through DC lines, and the pattern of a new multi-energy power system has taken shape. Due to the insufficient static voltage stability margin and low dynamic voltage stability of the multi-energy AC/DC hybrid receiving end power grid, this paper firstly establishes a multi-energy AC/DC hybrid power grid simulation model; secondly, calculates the nodes in the system From the perspective of time domain and frequency domain, select the global optimal compensation location. Finally, a multi-objective reactive power optimization control strategy for the receiving end power grid is proposed. The simulation results show that the multi-objective reactive power optimization control strategy proposed in this paper is conducive to improving the static and dynamic voltage stability of the power grid, making the new energy cluster adapt to the operation mode of the AC/DC hybrid power grid and the development of the power grid in heavy-load areas, and ensuring the regional economy and society. It is of great significance to develop and maintain the security and stability of the power grid.