Research on the influence of a high proportion of wind power connected to the receiving power grid on the system power angle stability

With the increasing proportion of wind power integration, effect on stability system angle cannot be ignored. In this paper, based different characteristics direct-drive generators before a fault and after its clearance, model receiving-end grid with thermal units replaced by turbines is simplified. The influence increase in replacement ratio transfer impedance between sending end receiving analyzed. Based equal area rule, k within grid, operation mode, integration point It concluded that system’s will first get better then deteriorate power, can bear larger under low-load capacity load center region relatively better. aforementioned conclusions are verified simulation real data from bulk China. Therefore, method conclusion also used to study other large-scale grids.