Impact of Wind Power and Photovoltaic Grid Connection on Subsynchronous Oscillation of Thermal Power

Abstract

Wind power, photovoltaic and thermal power bundling are the main forms of large-scale new energy grid connection and power transmission. Based on the IEEE’s first standard model, this paper incorporates direct-drive fans and photovoltaic systems. The transform method analyzes the effect of direct-drive wind turbines and photovoltaic grid-connected power on sub-synchronous oscillation of thermal power. Simulation results show that appropriately increasing the photovoltaic grid-connected capacity can increase the electrical damping of thermal power in the wind, solar and fire delivery system.