A method for determining the pumping power regulation range of a three-machine pumped storage unit

Abstract

The present invention discloses a method for determining the pumping power regulation range of a three-machine pumped storage unit, wherein the three-machine pumped storage unit includes a generator, a water pump and a turbine. A first parameter set for characterizing the pumping measurement parameters of the three-machine pumped storage unit is obtained and the pumping process efficiency is determined; a first relationship is determined based on the pumping process efficiency and the design efficiency value of the pumped storage power station and a second relationship is established; a third relationship is determined based on the power grid absorption power and the second relationship and a fourth relationship is determined, and the fourth relationship reflects the pumping power regulation range of the three-machine pumped storage unit. A method for determining the pumping power regulation range of a three-machine unit is proposed based on the unit characteristics and operation economy of the power station, which considers the realization of pumping hydraulic short-circuit operation in advance, solves the problem that the pumping operation power cannot be adjusted, enhances the ability of the pumped storage power station to flexibly adjust the service power grid, and provides a basis for realizing the pumping power regulation of the hydraulic circuit operation of the three-machine unit.

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