Control method and device for wind storage cooperative participation in frequency modulation

Abstract

The invention provides a control method and device for wind storage cooperative participation in frequency modulation, and the method comprises the steps: controlling energy storage to provide power output increment according to the maximum power under the condition that a power output increment instruction is not smaller than the energy storage power capacity, and controlling a fan to complement the power output increment except the energy storage power capacity; and under the condition that the to-be-supplemented power output increment instruction is smaller than the energy storage power capacity, controlling energy storage output according to a power output increment instruction and the power needed by the fan to switch back to the maximum power point tracking (MPPT) mode. According to the method, the power output increment instruction is compared with the energy storage power capacity, the frequency modulation characteristics of the fan and the energy storage are utilized, the MPPT mode of the fan is combined, coordination and optimization complementation of wind storage are achieved, frequency modulation resources can be utilized to the maximum extent, and the frequency modulation cost is reduced.

Description

technical field [0001] The invention relates to the field of electric power systems, in particular to a control method and device for wind storage cooperatively participating in frequency modulation. Background technique [0002] As the penetration rate of renewable energy such as wind power and photovoltaics continues to increase, and large-capacity DC projects continue to be put into operation, the problem of grid frequency security is highlighted. Using fast-response energy storage for frequency regulation is an effective measure to ensure grid frequency security in the new form. . [0003] At present, the idea of ​​adding energy storage equipment to wind farms for frequency regulation has been widely used, but the current mainstream solutions are wind turbine frequency regulation or energy storage frequency regulation, which cannot achieve effective energy allocation and low energy utilization efficiency. Contents of the invention [0004] Aiming at the problems exist...

AI Technical Summary

Problems solved by technology

[0003] At present, the idea of ​​adding energy storage equipment to wind farms for frequency regulation has been widely used, but the current mainstream solutions are wind turbine frequency regulation or energy storage frequency regulation, which cannot achieve effective allocation of energy, and energy utilization efficiency is not high

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