Hydropower-flywheel energy storage collaborative frequency modulation control method, device, equipment and medium

CN122159238APending Publication Date: 2026-06-05SANXIA JINSHAJIANG YUNCHUAN HYDROPOWER DEV CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: SANXIA JINSHAJIANG YUNCHUAN HYDROPOWER DEV CO LTD
Filing Date: 2026-02-27
Publication Date: 2026-06-05

AI Technical Summary

Technical Problem

Existing hydropower-flywheel energy storage coordinated frequency regulation methods lack accurate prediction of the actual dynamic characteristics of hydropower units, resulting in unreasonable power distribution. The frequency regulation of the energy storage system relies on fixed parameters and lacks adaptive capability, making it unable to effectively cope with complex dynamic operating conditions and limiting the effectiveness of coordinated control.

Method used

By predicting the target output power increment based on the real-time operating parameters of the hydropower unit, calculating the initial power command of the flywheel energy storage system by combining the governor droop coefficient and the grid frequency deviation, and performing regression calculation on the state of charge of the energy storage battery, the upper limit of the flywheel energy storage system output is dynamically adjusted, thereby achieving precise coordinated frequency regulation of the hydropower unit and the flywheel energy storage system.

Benefits of technology

It achieves efficient and safe coordinated frequency regulation under complex dynamic operating conditions, improves the frequency stability of the power grid and the safe and stable operation of hydropower units, reduces the regulation burden of hydropower units, and avoids mechanical stress and hydraulic oscillation.

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Abstract

A hydroelectric power-flywheel energy storage collaborative frequency modulation control method, device, equipment and medium, relating to the technical field of hydroelectric power and flywheel energy storage hybrid frequency modulation, including predicting the target output power increment value of the hydroelectric generator set based on the real-time operating parameters of the hydroelectric generator set, the real-time operating parameters including the water head parameter, the flow parameter, the guide vane opening parameter and the generator efficiency; calculating the initial power instruction corresponding to the flywheel energy storage system according to the target output power increment value, the speed regulator adjustment coefficient and the power grid frequency deviation; performing regression calculation on the current energy storage battery state of charge and the rated power of the energy storage system to obtain the real-time maximum discharge power corresponding to the flywheel energy storage system; taking the minimum value of the initial power instruction and the real-time maximum discharge power as the real-time frequency modulation power instruction of the flywheel energy storage system; and calculating the real-time frequency modulation power instruction of the hydroelectric generator set according to the speed regulator adjustment coefficient and the power grid frequency deviation. The hydroelectric power-flywheel energy storage collaborative frequency modulation control effect can be effectively improved through the present application.

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