Method for determining wind-solar primary frequency modulation reserve capacity considering cluster electric vehicle

Abstract

The invention provides a method for determining wind-solar primary frequency modulation reserve capacity considering a cluster electric vehicle. The method comprises the following steps: acquiring historical data of the maximum wind-solar power generation of the wind power in each time interval in one day of a wind power plant, and predicting the wind power in real time; acquiring historical dataof a photovoltaic power station, using fuzzy C-means clustering, dividing the weather into four basic types: sunny, partly cloudy, cloudy, and rainy, and carrying out real-time prediction on the photovoltaic output; arranging the wind power output and photovoltaic output data under each weather condition in sequence from small to large, and processing the data by using a quartile method; respectively giving an wind-abandoning and solar-abandoning proportionality coefficient of each part; calculating the respective total reserve capacity of the wind power plant and the photovoltaic power station; according to the controllable load provided by an electric vehicle aggregator with the reliability greater than or equal to n%, dividing the controllable load into two parts according to the reserve capacity of wind and solar; setting the controllable load provided by the cluster electric vehicle; and calculating the actual reserve capacity provided by the wind power plant and the photovoltaicpower station. According to the method for determining the wind-solar primary frequency modulation reserve capacity considering the cluster electric vehicle provided by the invention, wind-abandoningand solar-abandoning are reduced while providing the reserve capacity.

Description

technical field [0001] The invention relates to the field of calculation of spare capacity for primary frequency modulation of wind and solar energy, in particular to a calculation method for reserve capacity of auxiliary wind and solar power supplies of cluster electric vehicles participating in primary frequency modulation. Background technique [0002] Wind power and photovoltaics, as more promising renewable energy sources, have been increasing their penetration rate in the power grid. At the same time, considering the large amount of historical output of the two, it is often considered to combine the two to form a wind-solar hybrid system for use. However, due to the strong volatility and uncertainty of wind and light, there are many problems in the consumption of wind power and photovoltaics. When the usage ratio of traditional thermal power units decreases, the primary frequency regulation capability of the power system will be affected. Therefore, considering the u...

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Problems solved by technology

Since wind power needs to reduce load when participating in frequency regulation, the reserve capacity provided by abandoning wind will cause a certain degree of waste in the long run

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