Energy storage frequency modulation method, device, system, computer equipment and storage medium

Abstract

The present application relates to a method for frequency regulation of energy storage, including: receiving an AGC instruction, determining the expected output value and response time according to the AGC instruction; obtaining the output value of the unit, and calculating the difference between the expected output value and the output value of the unit; based on the preset difference threshold , the preset response time, the difference, and the response time determine the energy storage mode; based on the energy storage mode, send a control command to the corresponding energy storage device to control the output of the corresponding energy storage device. Through the above method, different energy storage methods can be selected according to different situations, so as to reduce the cost per unit of electricity while ensuring the frequency modulation performance of the generator set. The present application also provides an energy storage frequency modulation device, system, computer equipment and storage medium.

Description

technical field [0001] The present application relates to the field of electric power technology, in particular to an energy storage frequency modulation method, an energy storage frequency modulation device, an energy storage frequency modulation system, computer equipment and a storage medium. Background technique [0002] With the rapid development of new energy power generation and the grid connection of a large number of new energy generating units, the structure of the power system has changed. New energy power generation is limited by functional specifications and other reasons. At present, it basically does not have the frequency regulation function. With the gradual increase in the proportion of new energy generating sets, the relative inertia ratio of the entire system decreases, and the available frequency regulation resources are getting less and less. The system frequency The regulation ability has declined significantly, and the frequency stability of the power...

AI Technical Summary

Problems solved by technology

The current thermal power unit uses electrochemical energy storage to participate in the AGC joint frequency regulation of thermal power plants. The electrochemical energy storage system has a fast adjustment speed, high adjustment accuracy, and has fast and accurate response capabilities. It can be used for joint frequency modulation of thermal power units and can achieve good results; However, in this method, the requirements for electrochemical energy storage batteries are relatively high, and the energy storage battery loss is high, resulting in high cost per unit of electricity.

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