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Power balance method, energy management system and collaborative management system of energy storage system

An energy storage system and power technology, applied in the field of electrical engineering, can solve problems such as inability to effectively realize balanced management of battery containers, inconsistent state of battery containers, and inability to ensure accuracy, so as to achieve optimal selection, realize balanced management, and improve accuracy. degree of effect

Active Publication Date: 2021-07-13
HEFEI SUNGROW RENEWABLE ENERGY SCI & TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] for figure 1 The existing power balance distribution scheme of the energy storage system shown is: the voltage or SOC of the battery container is obtained through the BMS in the battery container, and the power is distributed to the battery container according to one of the distribution rules corresponding to the voltage or SOC of the battery container. However, since the voltage and SOC do not show a linear change during the entire charging and discharging process of the battery container, using any one of them as the basis for the power allocation of the entire charging and discharging process cannot ensure accuracy, and thus cannot effectively achieve a Balanced management of each battery container leads to inconsistent status of battery containers in the energy storage system, thereby increasing safety risks

Method used

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  • Power balance method, energy management system and collaborative management system of energy storage system
  • Power balance method, energy management system and collaborative management system of energy storage system
  • Power balance method, energy management system and collaborative management system of energy storage system

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Embodiment Construction

[0088] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0089] In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inher...

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Abstract

The invention provides a power equalization method, an energy management system and a collaborative management system of an energy storage system. Firstly, the physical parameters of each battery container in the energy storage unit are obtained under the current working condition, and the physical parameters of each battery container are calculated to obtain The voltage change rate and capacity change rate of each battery container; then compare the voltage change rate and capacity change rate of each battery container respectively, and according to the power distribution rule corresponding to the larger one of the voltage change rate and capacity change rate, The power of each battery container in the energy storage unit is allocated; no matter what charging and discharging interval the battery container is in, the power is allocated according to the power allocation rule corresponding to the larger change rate of the voltage and capacity in the interval, thus realizing The optimal selection of the power distribution basis improves the accuracy of power distribution, effectively realizes the balanced management of each battery container, and reduces safety risks.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and more specifically relates to a power equalization method of an energy storage system, an energy management system and a collaborative management system. Background technique [0002] With the development of new energy technology, the total power generation of photovoltaic power generation and wind power generation is increasing, and the energy storage technology of large-scale energy storage is developing rapidly, which enables the realization of large-scale energy storage and further realization through large-scale energy storage technology Peak shaving, frequency modulation, peak shaving and valley filling functions. [0003] At present, the structure of a typical energy storage system, such as figure 1 As shown, the energy storage system includes a plurality of energy storage units, wherein the energy storage unit includes an energy management system (Energy Management Syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32H02J7/00
CPCH02J3/32H02J7/0014H02J2203/20
Inventor 杨志强邹绍琨张鹏
Owner HEFEI SUNGROW RENEWABLE ENERGY SCI & TECH CO LTD
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