Energy-storage-containing electricity-heat interconnection system coordinated scheduling method considering wind power uncertainty

Abstract

The invention discloses an energy-storage-containing electricity-heat interconnection system coordinated scheduling method considering wind power uncertainty, and relates to the technical field of electricity-heat interconnection system optimized scheduling. The method comprises the following steps of: updating historical data of wind speed in each scheduling period, establishing a wind power prediction model based on Kalman filtering for predicting the wind speed, and converting the wind speed into wind power output according to a characteristic curve of the wind speed and the output; on the basis of a wind power prediction result, establishing a system coordinated scheduling model which includes an objective function and constraint conditions, and carrying out optimization scheduling is on system unit output and equipment states, wherein energy storage equipment participates in system scheduling according to different situations; and putting forward a self-feedback correction model, performing on-line prediction on wind power prediction errors through using the self-feedback correction model so as to correct a prediction result, and then correcting an optimization scheduling instruction of the system according to the corrected prediction result. On the premise that safe operation of the system is met, the wind curtailment amount and the system operation cost are reduced to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of optimal dispatching of an electric-thermal interconnection system considering the uncertainty of wind power, in particular to a coordinated dispatching method for an electric-thermal interconnection system including energy storage considering the uncertainty of wind power. Background technique [0002] Since the 21st century, renewable energy has received widespread attention from all over the world and experienced large-scale sustainable development. There are two main factors restricting the further development of renewable energy: one is that renewable energy itself has randomness and volatility, and when its penetration rate is large, it often has obvious anti-peak characteristics, making it difficult for traditional units to adjust. Furthermore, the phenomenon of abandoning wind and light occurs frequently; the second is that the reverse distribution characteristics of renewable energy and consumer te...

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Problems solved by technology

There are two main factors restricting the further development of renewable energy: one is that renewable energy itself has randomness and volatility, and when its penetration rate is large, it often has obvious anti-peak characteristics, making it difficult for traditional units to adjust. Furthermore, the phenomenon of abandoning wind and light occurs frequently; the second is that the reverse distribution characteristics of renewable energy and consumer terminals in my country lead to the need for long-distance large-scale transmission of electricity, and the lag of power grid construction makes renewable energy encounter consumption difficulties in the development , a large amount of clean electricity cannot be sent out

In addition, during heating in winter, the electric-heat restriction relationship of the heating unit and the operation mode of "heating to determine electricity" significantly reduce its peak-shaving capacity, and occupy the space for wind power to be connected to the grid.

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