Power grid control method based on battery service life model

A battery life and control method technology, which is applied to battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of battery body damage, reduce battery cycle life, and increase the investment cost of the whole life of the microgrid, so as to save investment cost, extended cycle life, and reduced shock and adverse effects

Active Publication Date: 2012-09-12
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

However, frequent charging and discharging and overcharging and overdischarging of the battery will cause great damage to the battery body, reduce the cycle life of the battery, and increase the life-span investment cost of the microgrid
At present, the control of en

Method used

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  • Power grid control method based on battery service life model
  • Power grid control method based on battery service life model
  • Power grid control method based on battery service life model

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Embodiment

[0086] The invention provides a structural diagram of a microgrid system including wind, solar and gas storage. The microgrid includes wind power generation, photovoltaic power generation, lithium battery packs, micro gas turbines, ordinary residents' electricity loads, controllable electric heating loads, and reactive power compensation devices. Among them, the ordinary electricity load refers to the electricity consumed by household appliances, and the controllable electric heating load refers to the electricity consumed by using abundant electricity for water heating and indirect energy storage in the community.

[0087] First, according to the type and model of the lithium battery selected in the micro-grid and the cycle life data of the lithium battery under different working conditions provided by the manufacturer, that is, the cycle life of the lithium battery under different SOC, charge and discharge current and temperature; establish the lithium battery of this type Ba...

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Abstract

The invention relates to micro-power grid control method in the power system field, in particular to a power grid control method based on a battery service life model. The method comprises the steps of (1) building a battery service life model; (2) judging whether battery operation parameters are out-of-limit; (3) judging whether a micro-power grid is restrained by self-balancing degree and self-smoothing degree; (4) controlling the micro-power grid restrained by the self-balancing degree and the self-smoothing degree; (5) controlling the micro-power grid restrained by the self-balancing degree and the self-smoothing degree; and (6) adjusting battery operation parameters when the battery operation parameters are out-of-limit. According to the method disclosed by the invention, the optimization combination control can be carried out according to the operation parameters influencing the circulating service life of a battery, and therefore, the service life of an energy storage battery can be well prolonged while a power distribution grid scheduling command is responded, the investment cost for the service life of the power grid is reduced, and the effective technical support for popularizing the rapid power grid development is provided.

Description

technical field [0001] The invention relates to a microgrid control method in the field of electric power systems, in particular to a microgrid control method based on a battery life model. Background technique [0002] In recent years, with the deteriorating environment and the scarcity of non-renewable energy sources, the development of microgrids (hereinafter referred to as microgrids) has gradually become an effective way to meet the demand for load growth, reduce environmental pollution, improve comprehensive energy utilization efficiency and power supply reliability. Energy storage batteries have been widely used in microgrids because of their mature technology, convenient use, and low price. Through the charge and discharge control of the energy storage battery, it is possible to stabilize power fluctuations, cut peaks and fill valleys, improve power supply reliability, and improve power quality. However, frequent charging and discharging and overcharging and overdis...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/28H02J7/35H02J3/38
Inventor 李洋刘海涛季宇吴鸣梁惠施苏剑
Owner CHINA ELECTRIC POWER RES INST
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