Frequency Modulation Parameter Design Method Considering Wind Power Low-voltage-ride-through Characteristics and Carrying Capacity Improvement

With the continuous increase of wind power permeability, the power generation space of thermal power and other conventional units in the power system is crowded out, leading to the increasing risk of frequency instability. Therefore, the wind power carrying capacity will be constrained. At present, most studies on the improvement of wind power carrying capacity are based on the analysis of frequency modulation parameters under the power step disturbance, without considering the active power recovery characteristics of wind power after low-voltage-ride-though. This may lead to excessive design of frequency modulation parameters, resulting in redundant installation of frequency modulation energy supply devices such as energy storage and a waste of investment. Therefore, a frequency modulation parameter design method considering wind power low-voltage-ride-through characteristics and carrying capacity improvement is proposed in this paper, which realizes the minimum frequency modulation energy consumption. This quantitative calculation method provides a reference for frequency modulation parameter design and frequency modulation energy allocation under target wind power carrying capacity.