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Method of dynamically optimizing energy storage capacity of optical storage micro-grid system

A technology for energy storage capacity and dynamic optimization, which is applied in the direction of AC network load balancing, single-network parallel feeding arrangement, and reduction/prevention of power oscillation, etc. less than fully utilized

Inactive Publication Date: 2015-08-19
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, under normal circumstances, the above-mentioned ratio of emergency power reserve capacity and smooth fluctuation capacity has been fixed at the beginning of the design, resulting in too large or too small emergency power reserve capacity, and the capacity of the entire energy storage battery is not fully utilized. less efficient

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  • Method of dynamically optimizing energy storage capacity of optical storage micro-grid system
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  • Method of dynamically optimizing energy storage capacity of optical storage micro-grid system

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Embodiment Construction

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0052] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The embodiment of the invention provides a method of dynamically optimizing an energy storage capacity of an optical storage micro-grid system. The method mainly comprises steps: according to forecasted photovoltaic power output and load power output, a power output curve of an energy storage battery is calculated, the maximal energy storage power value and the minimal energy storage power value of the energy storage battery in an entire sample data cycle are acquired, and an initial energy storage battery capacity for smooth fluctuation is further acquired; according to the total capacity of the energy storage battery, the minimal energy storage capacity value for emergency and the initial energy storage battery capacity for smooth fluctuation, a final energy storage capacity for emergency and the energy storage capacity for smooth fluctuation are determined. According to the embodiment of the invention, according to results of photovoltaic power generation output forecasting and load forecasting, the capacity ratio of power fluctuation for emergency and smooth grid site connection in the energy storage system is calculated, and dual effects of smoothing power fluctuation of the optical storage micro-grid system and the grid-connected sites and improving the energy storage utilization rate can be achieved.

Description

technical field [0001] The invention relates to the technical field of microgrid systems, in particular to a method for dynamically optimizing energy storage capacity of an optical storage microgrid system. Background technique [0002] In the micro-grid system, the energy storage battery is often configured to smooth the power fluctuation of the grid-connected point and improve the acceptance capacity of the grid to the micro-grid system. Part of the capacity of the energy storage battery in the optical storage microgrid system is used for emergency power supply, and the other part is used to smooth the power fluctuation of the grid connection point. However, under normal circumstances, the above-mentioned ratio of emergency power reserve capacity and smooth fluctuation capacity has been fixed at the beginning of the design, resulting in too large or too small emergency power reserve capacity, and the capacity of the entire energy storage battery is not fully utilized. les...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J3/24H02J3/38
Inventor 王玮孟顺吴学智曾国宏张尚腾刘平竹刘德龙耿婧张传刚田丰
Owner STATE GRID CORP OF CHINA
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