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A coordinated control method of energy storage power station group supporting grid frequency

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: 2022-08-05
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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  • A coordinated control method of energy storage power station group supporting grid frequency
  • A coordinated control method of energy storage power station group supporting grid frequency

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

[0018] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the application. Unless otherwise defined, 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 herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components, and...

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Abstract

The invention relates to a coordinated control method for energy storage power stations supporting grid frequency. The method obtains the frequency adjustment sensitivity of each energy storage power station in a regional power grid in advance, and uses the sensitivity to characterize the response priority of each energy storage power station when the frequency is abnormal. The higher the frequency, the first to respond; when the frequency is abnormal, the energy storage power station with priority 1 immediately adjusts the output to support the grid frequency; given a delay, if the energy storage power station that has adjusted the output fails to When the frequency returns to the normal range, the energy storage power station with the next priority will adjust the output to support the grid frequency. The method is conducive to automatically coordinating each energy storage power station when the frequency of the power grid is abnormal, no communication is required, and the output adjustment amount of the energy storage power station 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 grid frequency. 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 can reduce peak-to-valley difference, improve power quality, and provide emergency power. With the breakthrough of energy storage technology and the 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, Hunan and other province...

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Application Information

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Patent Type & Authority Patents(China)
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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