Abstract:Excavating the output characteristics of new energy power has instructive significance in power grid planning and peak load regulation, and is also a key focus of new-type power system construction. Based on this, this paper has established a relatively reasonable evaluation system for new energy output characteristics based on time-series big output data from wind and photovoltaic power plants in a certain region of Guizhou Province over the past three years, and has analyzed output characteristic parameters through modeling analysis, such as power distribution, capacity credit, effective capacity, and typical daily power balance curves. The research shows that the seasonal characteristics of wind power in this region are not as obvious as those of photovoltaic power, but the output fluctuation of wind power is higher than that of photovoltaic power. During the evening peak load period, the capacity credit of wind power is 1.85% of the installed capacity in summer and 0.02% in winter, while the capacity credit of photovoltaic power is 0% due to the lack of power generation during the evening. In addition, under a 95% accommodation rate, the maximum output of wind power in this region is 51.20% of the installed capacity, and that of photovoltaic power is 57.55%. Furthermore, the wind power and photovoltaic power in this region will aggravate the difficulty of power system peak load regulation during power shortage period.