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Energy storage power station group coordination control method for supporting frequency of power grid

A technology for energy storage power stations and grid frequency, which is applied to AC networks, electrical components, and circuit devices with the same frequency from different sources. It can solve problems such as dependence on communication, and achieve stable grid frequency and small output adjustments.

Active Publication Date: 2021-09-07
STATE GRID FUJIAN ELECTRIC POWER CO LTD +1
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Problems solved by technology

But this method relies on communication

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  • Energy storage power station group coordination control method for supporting frequency of power grid
  • Energy storage power station group coordination control method for supporting frequency of power grid

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[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0019] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...

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Abstract

The invention relates to an energy storage power station group coordination control method for supporting the frequency of a power grid, which comprises the following steps of: acquiring the frequency regulation sensitivity of each energy storage power station in a regional power grid in advance, representing the response priority sequence of each energy storage power station when the frequency is abnormal by using the sensitivity, and enabling the energy storage power station with higher sensitivity to respond to first; when the frequency is abnormal, enabling the energy storage power station with the priority of 1 to immediately adjust output to support the frequency of the power grid; and giving time delay, and if the energy storage power station of which the output is adjusted does not recover the frequency to a normal interval within the time delay, adjusting the output by the energy storage power station of the next priority to support the frequency of the power grid. The method is beneficial for automatically coordinating the energy storage power stations when the frequency of the power grid is abnormal, communication is not needed, and the output adjustment amount of the energy storage power stations is small.

Description

technical field [0001] The invention belongs to the field of power system operation and control, and in particular relates to a coordinated control method for an energy storage power station group supporting the frequency of a grid. Background technique [0002] Energy storage technology plays an important role in promoting energy production and consumption, promoting energy revolution and new energy formats, and its development has been highly valued by the state. In recent years, energy storage technology has been demonstrated and applied in all aspects of the power system, which has the functions of reducing peak-to-valley differences, improving power quality, and providing emergency power. With breakthroughs in energy storage technology and rapid cost reduction, the development and construction of electrochemical energy storage power stations in my country has accelerated, and the conditions for large-scale application of energy storage are basically met. Jiangsu, Henan...

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Application Information

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IPC IPC(8): H02J3/46H02J3/48H02J3/24H02J3/28H02J3/06
CPCH02J3/466H02J3/48H02J3/24H02J3/28H02J3/06H02J2203/10H02J2203/20H02J2300/40
Inventor 黄兴华唐志军林国栋陈金玉李智诚晁武杰戴立宇张伟骏陈锦山翟博龙
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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