Electrochemical and flywheel hybrid energy storage system

A hybrid energy storage system and flywheel energy storage technology, applied in the energy field, can solve problems such as insufficient response speed, insufficient adjustment accuracy, and high plant safety accidents, and achieve fast adjustment speed, high adjustment accuracy, and safe operation. Effect

Pending Publication Date: 2021-04-30
若普自动化技术(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the energy storage technology currently used is used to adjust the frequency of the power plant unit, the response speed is not fast enough and the adjustment accuracy is not enough. When the high-power auxiliary machine is started or not stopped, the instantaneous voltage fluctuates, which is prone to safety accidents caused by high plant changes.

Method used

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  • Electrochemical and flywheel hybrid energy storage system
  • Electrochemical and flywheel hybrid energy storage system
  • Electrochemical and flywheel hybrid energy storage system

Examples

Experimental program
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Effect test

Embodiment 1

[0031] like figure 1 As shown, an electrochemical and flywheel hybrid energy storage system proposed by the present invention includes an electrochemical energy storage device 102, a battery management system 103, a flywheel energy storage device 202, a flywheel control system 203, an energy storage energy management system, an energy storage Auxiliary frequency modulation control device group, bidirectional converter group and transformer group; energy storage energy management system communication connection electrochemical energy storage device 102, battery management system 103, flywheel energy storage device 202, flywheel control system 203, energy storage auxiliary frequency modulation control device group, bidirectional converter group and transformer group; the energy storage auxiliary frequency modulation control device group includes energy storage auxiliary frequency modulation control device 1 301 and energy storage auxiliary frequency modulation control device 2 30...

Embodiment 2

[0039] like Figure 3-4As shown, the present invention further provides a device for a combined electrochemical and flywheel hybrid energy storage system of a power plant unit, including a power plant unit and the above-mentioned electrochemical and flywheel hybrid energy storage system; the power plant unit is provided with a control unit; The control unit is connected to the energy storage auxiliary frequency modulation control device group in the electrochemical and flywheel hybrid energy storage system.

[0040] In an optional embodiment, the working steps of the device are as follows:

[0041] S1. Send the power grid dispatching frequency regulation command to the power plant unit, and the electrochemical and flywheel hybrid energy storage system simultaneously obtains the frequency regulation command;

[0042] S2. When the above-mentioned frequency modulation command is a load-up / down command, the electrochemical and flywheel hybrid energy storage system discharges / char...

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PUM

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Abstract

An electrochemical and flywheel hybrid energy storage system comprises an electrochemical energy storage device, a battery management system, a flywheel energy storage device, a flywheel control system, an energy storage energy management system, an energy storage auxiliary frequency modulation control device group, a bidirectional converter group and a transformer group. The device of the power plant unit combined with the electrochemical and flywheel hybrid energy storage system comprises the power plant unit and the electrochemical and flywheel hybrid energy storage system. The power plant unit is combined with the electrochemical and flywheel hybrid energy storage system, the electrochemical energy storage device and the flywheel energy storage device are preferentially controlled to perform corresponding actions when a power grid needs to be subjected to load increasing/decreasing frequency modulation, and the system has the advantages of high regulation speed, short response time and high regulation precision; and the electrochemical energy storage device and the flywheel energy storage device can quickly supplement or absorb the part of energy to maintain the stable bus voltage and ensure the safe operation of a high plant transformer.

Description

technical field [0001] The invention relates to the field of energy, in particular to an electrochemical and flywheel hybrid energy storage system. Background technique [0002] Energy storage technology specifically refers to the technology that stores energy through mechanical, electromagnetic, electrochemical and other methods, and then converts it into electrical energy through mechanical, electromagnetic, and electrochemical methods when needed, and provides electrical energy for electrical equipment. A technology that brings breakthrough advances in the development and operation of energy systems. When the energy storage technology currently used is used to adjust the frequency of the power plant unit, the response speed is not fast enough and the adjustment accuracy is not enough. When the high-power auxiliary machine is started or not stopped, the instantaneous voltage fluctuates, which is prone to safety accidents caused by high plant changes. . [0003] In order ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J15/00H02J3/12H02J3/24H02J3/30H02J3/32
CPCH02J3/12H02J3/30H02J3/32H02J15/00H02J3/241H02J15/007Y02E60/16Y02P90/50
Inventor 李强
Owner 若普自动化技术(北京)有限公司
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