Research on Probability Distribution Characteristics of Simultaneous Output Power of Wind Farms

Considering the distribution characteristics of wind farm output power, this paper uses the measured data to study the probability distribution of wind farm at the same time every year. In order to accurately fit the probability distribution, Fourier series, polynomial function and Gaussian function are introduced to analyze the data, and the root mean square, variance and determination coefficient are used as evaluation indexes to evaluate and compare the above methods. In terms of various indicators, the third-order Fourier series can more accurately describe the probability distribution of wind farm output power. Finally, the fitting method is verified by different time data. The results show that the third-order Fourier series can accurately describe the output power of the wind farm at the same time.