Wind power plant energy storage volume configuration method capable of improving dispatching economy of electric power system

Abstract

The invention provides a wind power plant energy storage volume configuration method capable of improving the dispatching economy of an electric power system. The method is characterized by comprising the contents of the definition of prediction errors and the error rate, the relationship among the system wind power standby volume, the energy storage system volume and the wind-power power prediction errors, wind power standby volume determination, energy storage volume determination, confidence degree definition and the like. An energy storage system is used for compensating the time period power shortage with greater wind-power power prediction errors for power and energy time transfer features and fast response capability, a target function with the minimum sum of the system standby volume cost and the configured energy storage volume cost is built, matlab programming is utilized for solving the energy storage system volume in the target function, the goal of greatly reducing the wind-power standby volume of the system at less energy storage volume configuration can be realized, and the operation economy of the system can be improved.

Description

technical field [0001] The invention relates to the field of wind power control, and relates to a method for configuring energy storage capacity of a wind farm to improve dispatching economy of a power system. Background technique [0002] In recent years, the energy crisis and environmental crisis brought about by the large-scale development and utilization of fossil energy have become prominent. The development and utilization of renewable energy has attracted more and more attention from all countries. As an inexhaustible clean energy , is the renewable energy with the most large-scale commercial application; with the continuous increase of wind power scale, the influence of wind power grid connection on the system is increasing, and it has become an unavoidable problem to incorporate wind power into power system dispatching; the dispatching department according to The load forecast curve and the wind power forecast curve arrange the output of the unit, but the accuracy o...

AI Technical Summary

Problems solved by technology

At present, energy storage is expensive, and the configuration capacity is too large, which will inevitably increase the total cost of dispatching and energy storage systems. Therefore, it is a problem that those skilled in the art have always wanted to solve to find the optimal configuration of energy storage capacity, but so far, it has not been solved. technical challenge

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