Energy storage system and method and device for controlling power balance of energy storage system

An energy storage system and balanced control technology, applied in the direction of AC network load balancing, cell structure combination, electrochemical generator, etc., can solve the problem of high requirements for single batteries

Active Publication Date: 2017-02-22
XJ POWER CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The purpose of the present invention is to provide an energy storage system to solve the

Method used

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  • Energy storage system and method and device for controlling power balance of energy storage system
  • Energy storage system and method and device for controlling power balance of energy storage system
  • Energy storage system and method and device for controlling power balance of energy storage system

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Embodiment Construction

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0039] Embodiment of control method

[0040] The basic inventive idea of ​​the energy storage system provided by the present invention is: the energy storage system is provided with a plurality of battery modules and a plurality of energy storage converter modules, such as figure 2 shown. Wherein, the battery module may only include one single battery, or may be composed of multiple single batteries. In this embodiment, the battery module is composed of a single battery, that is, the battery module is essentially a single battery.

[0041] The energy storage system includes p single batteries, and the p battery modules form m battery clusters, where m≥2, and a battery cluster is a collection of single batteries. There is at least one single battery in each battery cluster, that is, only one single battery or multiple single batteries can be set in one bat...

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PUM

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Abstract

The invention relates to an energy storage system and a method and a device for controlling power balance of the energy storage system. The energy storage system comprises p battery modules and n energy storage current transformer modules. M battery clusters are formed by the p battery modules, the m is larger than or equal to 2, the n is larger than or equal to the m, and at least one battery module is arranged in each battery cluster. The method includes acquiring power ratios of the various battery clusters; computing given power of the corresponding energy storage current transformer modules according to total given power and the power ratios of the various battery clusters so as to control the power balance. The energy storage system, the method and the device have the advantages that the various battery clusters can work without interfering with one another, only current transformer equipment of a certain battery cluster needs to be shut down on the assumption that batteries of the certain battery cluster are damaged, the other battery clusters still can normally work, great change of working of systems can be prevented, and the fault tolerance and the operation stability of the systems can be enhanced; the stability and the fault tolerance of the systems can be improved by the energy storage system, and influence of damage of the single batteries on the integral systems can be lowered to a great extent.

Description

technical field [0001] The invention relates to an energy storage system and its power balance control method and control device. Background technique [0002] In recent years, there has been an irreconcilable contradiction between the ever-increasing energy demand and the increasingly scarce energy resources, so the development and utilization of renewable energy has become a hot issue of concern to all walks of life. Renewable energy generally refers to wind energy, solar energy, water energy, biomass energy, geothermal energy, and ocean energy. Compared with fossil energy such as coal, oil, and natural gas, their most prominent advantages are that they can be used sustainably and are environmentally friendly. harmful or minimally harmful. Among these renewable energy sources, the most widely used renewable energy sources are solar energy and wind energy. Taking my country's wind energy as an example, according to the latest assessment indicators of wind energy resources...

Claims

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Application Information

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IPC IPC(8): H01M10/42H02J3/32
CPCH01M10/4207H01M10/425H02J3/32Y02E60/10
Inventor 刘超陈世峰陈天锦韩海伦曹智慧季建伟马俊高鹏魏众詹金果于朝辉
Owner XJ POWER CO LTD
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