A pumped storage unit combined regulation control method and device, medium and product

By combining pumped storage units with a joint regulation and control method, and integrating variable speed and hydraulic short-circuit operation modes, the problem of continuous power absorption regulation across the entire power range that traditional units cannot achieve has been solved, thus improving the flexibility and equipment safety of pumped storage power stations in new power systems.

CN122371234APending Publication Date: 2026-07-10CHINA THREE GORGES CORPORATION +1
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Patent Information

Application Number
CN202610449853.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-07
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Traditional constant-speed mixed-flow reversible units cannot achieve continuous adjustment of absorbed power across the entire power range, which limits the flexibility of pumped storage power stations in absorbing renewable energy in new power systems, and the hydraulic short-circuit operation mode was not considered during the design phase.

Method used

A method for joint regulation and control of pumped storage units is provided. The method obtains the regulation range of rated power, variable speed and hydraulic short-circuit operation of the unit through a coordinated control system, determines the target operation mode, and achieves continuous regulation of absorbed power across the entire power range by combining variable speed and hydraulic short-circuit operation modes.

Benefits of technology

It achieves continuous regulation of absorbed power across the entire power range, improving the pumped storage unit's responsiveness to grid power demands and ensuring safe and stable operation of the equipment, thus adapting to the flexibility requirements of new power systems.

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Abstract

This invention relates to the field of pumped storage technology, and discloses a method, device, medium, and product for joint regulation and control of pumped storage units. The method includes: acquiring the rated power value, variable speed operation power adjustment range, and hydraulic short-circuit operation power adjustment range of the pumped storage unit to be controlled; upon receiving the power absorption value from the power grid dispatch system, determining a first ratio between the power grid dispatch absorption power and the rated power value; acquiring the maximum variable speed operation power value based on the variable speed operation power adjustment range, and determining a second ratio between the maximum variable speed operation power and the rated power; and determining the target operating mode of the pumped storage unit to be controlled based on the first ratio, the second ratio, the variable speed operation power adjustment range, and the hydraulic short-circuit operation power adjustment range, and controlling the operation of the pumped storage unit. Therefore, by implementing this invention, considering the hydraulic short-circuit operation mode, continuous regulation of absorbed power across the entire power range is achieved.
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