Medium and long term voltage stability simulation of power system under high proportion of new energy substitution

Abstract

In order to maintain the stability of the current and voltage of the power system under the high proportion of new energy sources, a simulation method for the medium and long-term voltage stability of the power system under the proportion of high and new energy substitution is studied. Based on the simplified model of a high-proportion new energy alternative power system, the voltage stability conditions of the system are analyzed. After studying the influence of dynamic load changes on the voltage stability of the power system, continuous parameters are introduced based on the principle of quasi-steady-state simulation to realize the simulation analysis of voltage stability. The comparative analysis of the simulation results proves that the simulation method not only has high accuracy, but also shortens the simulation time by about 41.87%. The simulation effect is good, and it is suitable for the long-term voltage stability simulation of the power system.