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Running state assessment method for flow cell energy storage system

A technology of operating state and energy storage system, applied in the fields of fuel cells, fuel cell additives, fuel cell control, etc., can solve the problem of lack of state evaluation, and achieve the effect of reliable and comprehensive evaluation.

Inactive Publication Date: 2017-04-26
湖南德沃普电气股份有限公司
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  • Abstract
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Problems solved by technology

There are many problems in the assessment technology, especially the lack of practical state assessment theory and methods to guide the state assessment work of the flow battery energy storage system

Method used

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  • Running state assessment method for flow cell energy storage system
  • Running state assessment method for flow cell energy storage system
  • Running state assessment method for flow cell energy storage system

Examples

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Embodiment

[0036] The present invention will be further described below in conjunction with accompanying drawing.

[0037] Such as figure 1 As shown, the evaluation method includes the following steps:

[0038] I. Establish a hierarchical model for evaluating the operating status of the flow battery energy storage system, and set the required monitoring quantities and their corresponding index values. The monitoring quantities include battery stack voltage, charging current, discharging current, battery temperature, pipeline flow, and pipeline pressure , liquid level of liquid storage tank, state of charge SOC, total voltage of energy storage system, consistency of battery stack, insulation resistance, initialization of internal communication interface, initialization of external communication interface;

[0039] II. Set the corresponding weight value of each monitoring quantity in the evaluation calculation; the weight is as follows: the weight coefficient of the battery stack voltage ...

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Abstract

The invention relates to a running state assessment method for a flow cell energy storage system. The running state assessment method for the flow cell energy storage system is characterized in that: when the assessment score of at least one monitoring quantity is zero, the system running state assessment score is zero; under other conditions, the system running state assessment score S is the sum of the assessment scores M of all monitoring quantities, namely, S=SigmaM*W, wherein W is a weighted value; and detection quantities at least include an SOC (State of Charge) and a battery temperature. Compared with the prior art, the running state assessment method has the beneficial effects that the overall running state of the flow cell energy storage system is comprehensively evaluated by acquisition of the states of the monitoring quantities, so that a system running state can be reflected accurately through key equipment indexes.

Description

[0001] Technical field: [0002] The invention relates to the field of battery energy storage, in particular to a method for evaluating the operating state of a liquid flow battery energy storage system. [0003] Background technique: [0004] The operation status assessment process of the flow battery energy storage system is to record, classify and evaluate its own operation status and other information, so as to provide decision-making for equipment risk assessment and condition maintenance. Although the state assessment of electrical equipment has received great attention in recent years, the operation state assessment of the flow battery energy storage system has not met the practical requirements, and there are few related theoretical studies. There are many problems in the assessment technology, especially the lack of practical state assessment theories and methods to guide the state assessment of flow battery energy storage systems. [0005] Invention content: [0006...

Claims

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Application Information

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IPC IPC(8): H01M8/04298
CPCH01M8/04305Y02E60/50
Inventor 魏达刘平平刘杰
Owner 湖南德沃普电气股份有限公司
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