Control method for participation of pumped storage unit in power frequency modulation market

Abstract

The invention discloses a control method for participation of a pumped storage unit in a power frequency modulation market, belongs to the field of automatic control of pumped storage units, and aims to solve the problem that the existing control method cannot meet the requirements of the pumped storage unit in the electric power frequency modulation market. The control method comprises: entering a power frequency modulation market mode; setting a speed regulator parameter and a control threshold, so that the speed regulator tracks and responds to the AGC target instruction; obtaining the value of a comprehensive index K related to the parameters of the speed regulator, and calculating the average value K' of K in past unit time; when K' is smaller than a control threshold value, decomposing the K', adjusting parameters of the speed regulator, and executing the step 2 again; and when K' is greater than or equal to the control threshold, maintaining the speed regulator parameters until the regulation process is finished. Based on the AGC target instruction, a power generation instruction is sent down through a dispatching side, and the speed regulator parameters are fed back and adjusted by calculating the comprehensive index K, so that the pumped storage unit meets the requirements of the power frequency modulation market.

Description

technical field [0001] The invention belongs to the field of automatic control of a pumped storage unit, in particular to a control method for a pumped storage unit participating in the power frequency regulation market. Background technique [0002] Pumped storage units have two basic functions of pumping water and generating electricity. The unit operates as a water turbine during the peak load of the power system. The governor system adjusts the opening of the guide vane of the water turbine, converts the potential energy of the water into the mechanical energy of the unit rotation, and then converts the mechanical energy into electrical energy through the generator; when the power system load is low It operates as a water pump, pumping water from the lower reservoir to the upper reservoir with the electric energy in the low valley. Through the automatic adjustment of the governor system, the opening of the guide vane is automatically adjusted according to the pump head, ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing control method cannot meet the high-efficiency or high-yield operation of the pumped storage unit in the power frequency regulation market, the present invention provides a control method for the pumped storage unit to participate in the power frequency regulation market, which can improve the efficiency of the pumped storage unit in the power frequency regulation market. Competitiveness in the FM market segment, thereby improving economic efficiency

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