Micro-grid modular energy storage device optimal configuration and control method

A technology of energy storage device and optimized configuration, applied in circuit devices, electrical components, energy storage, etc., can solve problems such as wasteful energy use, and achieve the effect of ensuring stability

Active Publication Date: 2017-12-22
NARI TECH CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned situations have caused considerable impact on new energy sources such as large-scale photovoltaics and wind power. Therefore, it is very common for various large-scale new energy power stations that have been built to abandon light and wind, which is a great waste of energy.

Method used

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  • Micro-grid modular energy storage device optimal configuration and control method
  • Micro-grid modular energy storage device optimal configuration and control method
  • Micro-grid modular energy storage device optimal configuration and control method

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0040] in this appendix image 3 Among them, γ=1.2, a=0.2, b=0.5, η in =1, η out =1.

[0041] Describe in detail in conjunction with accompanying drawing, this method comprises the following steps:

[0042] 1) Configure energy storage power: Before determining the energy storage system, collect the load conditions of the location, determine the load curve, clarify the load characteristics, classify them, and determine the power value of important loads.

[0043] There are two ways in this example:

[0044] I) Use the balance supplement method to configure power. The microgrid must ensure the balance of power supply and demand at any time. If the configured energy storage capacity is insuffici...

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Abstract

The invention discloses a micro-grid modular energy storage device optimal configuration and control method. The method comprises the steps that 1) energy storage power is configured; 2) the capacity of an energy storage battery is calculated; 3) the energy storage battery is selected according to an actual energy storage battery type selection principle; 4) during the operation of a micro-grid system, the charge-discharge state and the charge-discharge value of an energy storage system are established according to the output value of each distributed power supply and the conditions of the SOC and SOH of the energy storage battery; and 5) grid-connection and off-grid switching needs to be carried out, a seamless switching mode is used, and specifically off-grid to grid-connection, planned off-grid and unplanned off-grid are seamlessly switched. According to the invention, the method describes a whole set of solutions of an energy storage unit in the micro-grid, and has the characteristics of typicalness, operability and the like.

Description

technical field [0001] The invention relates to a micro-grid-oriented modular energy storage device optimization configuration and control method, and belongs to the technical field of distributed power sources and micro-grids. Background technique [0002] New energy power generation such as photovoltaics and wind power that has been built in the world is affected by uncertain factors and conditions such as climate and temperature. Because of the randomness, volatility and intermittent nature of its power generation characteristics, it is determined that its large-scale development is inevitable. It will have a significant impact on power grid dispatching and system security operation. However, the power grid pursues a smooth and stable energy body, and a greater part of the reason lies in whether the local transmission trunk line of the station can completely transmit the new energy power generated by its photovoltaic and wind power to the outside. There is also the situa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J3/38
CPCH02J3/32H02J3/381Y02E70/30
Inventor 王建国谢丰丁孝华徐瑞林陈涛李俊杰李哲付明刘如帆
Owner NARI TECH CO LTD
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