Modular energy storage system reliability evaluation method based on complex network theory

A technology of energy storage system and evaluation method, which is applied in data processing applications, electrical digital data processing, special data processing applications, etc., to achieve the effects of improving reliability, clear physical meaning, and easy operation and implementation.

Inactive Publication Date: 2015-12-09
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing complex system reliability evaluation methods based on complex network theory do not obviously involve the construction of modular energy storage

Method used

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  • Modular energy storage system reliability evaluation method based on complex network theory
  • Modular energy storage system reliability evaluation method based on complex network theory
  • Modular energy storage system reliability evaluation method based on complex network theory

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0053] Embodiment 1 is composed of 192 batteries, 4 single batteries are connected in two parallels and two series to form a module, and 48 modules are connected in series to form a battery pack.

Example Embodiment

[0054]Embodiment 2, composed of 288 batteries, the electrical connection of the battery pack is that 96 single cells are connected in series, and 3 groups are connected in parallel;

Example Embodiment

[0055] Example 3, 10 single batteries are connected in series to form a battery module, 24 battery modules are connected in series to form a battery cluster, and 6 battery clusters are connected in parallel to form a battery subsystem. A total of 1440 single batteries are used.

[0056] The network model of the modular energy storage system is constructed by using the bipartite network model: two different types of nodes are the cell nodes and the connection point nodes between the cells. Access the adjacent connection point nodes respectively, and there is no connection edge between similar nodes. A single cell node and a connection point node are connected in sequence to form a series module, and two or more cell nodes connected to adjacent connection point nodes form a parallel module, and the series module and the parallel module are connected in parallel / series Constitute a modular energy storage system network model.

[0057] The three embodiments of the above-mentioned...

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Abstract

The invention provides a modular energy storage system reliability evaluation method based on a complex network theory. The method comprises the steps that the number of single cells of the topology structure of a modular energy storage system are acquired; a bipartite network model is used to construct a modular energy storage system network model; the static structure feature parameter of the modular energy storage system network model is analyzed; and a reliability evaluation index is used to evaluate the reliability of the modular energy storage system. According to the invention, the bipartite network model is used to establish the modular energy storage system network model; the physical meaning of the modular energy storage system network model is clear, which is easy for engineering personnel to operate and implement; through the evaluation method, a fragile structure in the modular energy storage system can be effectively detected; causes and key factors, which affecting the reliability of the modular energy storage system, are revealed; and a scientific basis is provided for targeted improvement of the reliability of the modular energy storage system.

Description

technical field [0001] The invention belongs to the technical field of power system energy storage batteries, and in particular relates to a method for evaluating the reliability of a modular energy storage system based on complex network theory. Background technique [0002] Energy storage technology is used in all links of power system generation, transmission, distribution, and use, and is one of the key supporting technologies for the development and construction of smart grids. Among various energy storage technologies, electrochemical energy storage technology has made great breakthroughs in recent years, making energy storage batteries an energy storage carrier with application potential. [0003] In order to meet the actual demand, the electrochemical energy storage technology must adopt a modular energy storage system composed of several battery modules connected in series and parallel. In a modular energy storage system, once the series connection is destroyed, th...

Claims

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Application Information

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IPC IPC(8): G06Q50/06G06F17/50
Inventor 陈继忠王坤洋李又宁苏涛毛海波闫雪生胡娟
Owner CHINA ELECTRIC POWER RES INST
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