Design and Simulation of Islanded Voltage Stabilization in Wind Power, Photovoltaic, and Energy Storage Microgrids

Due to the growing problem of depletion of non-renewable resources such as natural gas and coal in the traditional power generation model, new energy sources such as wind and solar are being used more and more in the grid. However, the emergence of distributed power sources also brings many instability factors to the grid: temperature, humidity, light intensity and other external environmental conditions can cause disturbance to the grid. Therefore, new energy microgrids with energy storage elements that can regulate the internal energy flow of the system have emerged. This paper establishes a simulation model for the islanding operation of the scenery storage microgrid. A hybrid energy storage method is proposed to stabilize the voltage at the DC bus of the system by separating the voltage signal through a low-pass filter to control the power generated by the scenic power system to ensure a stable supply of energy to the load side during islanding operation. Through the simulation, it is verified that the model can meet the needs of the load side and supply energy stably in islanding mode.