The calculation method of critical permeability of new energy constrained by static voltage stability

With large-scale wind power, photovoltaic and other new energy connected to the power grid, the new energy generating unit has begun to affect the stability of the power system. At the same time, constrained by the grid characteristics of new energy connected to the power grid and the safety limitations of new energy equipment, the voltage problem of new energy connected to the grid becomes more prominent. At present, the research on the permeability of the high proportion of new energy connected to the power grid is still in its early stage. This paper mainly studies the critical permeability of new energy constrained by static voltage stability. Firstly, the mathematical model of new energy generating units connected to the power grid is analyzed, and the practical engineering calculation method of critical permeability of new energy based on static voltage stability of 8% constraint is proposed. Then taking the actual power grid as an example, the critical permeability of new energy in the study zone is calculated according to the method proposed in this paper. Finally, several factors affecting the new energy permeability are analyzed through calculation. This study can provide an important basis for the maximum consumption of new energy power generation and regional new energy planning.