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Sustainable energy storage battery charging and discharging power balanced distribution method and system

A technology of charge and discharge power, balanced distribution, applied in the direction of secondary battery charge/discharge, charge balance circuit, battery circuit device, etc. Power and other issues, to achieve the effect of prolonging the service life, good operability and practicability, and reasonable steps

Pending Publication Date: 2022-05-13
BEIJING HUADIAN TIANREN ELECTRIC POWER CONTROL TECH
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AI Technical Summary

Problems solved by technology

[0004] The existing energy storage allocation method also includes the method of allocating power only in proportion to the rated power of the battery. This method not only shortens the life of the battery due to high charging and discharging frequency, but also causes unbalanced operation of each battery, and often fails to reach the maximum rated power. Case

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  • Sustainable energy storage battery charging and discharging power balanced distribution method and system
  • Sustainable energy storage battery charging and discharging power balanced distribution method and system
  • Sustainable energy storage battery charging and discharging power balanced distribution method and system

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Embodiment Construction

[0083] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.

[0084] Such as figure 1 As shown, the present invention proposes a sustainable energy storage battery charge and discharge power balance distribution method, the method specifically includes the following steps:

[0085] Step 1: Obtain parameter data related to energy storage power distribution, including real-time operating parameters and deterministic parameters related to energy storage systems;

[0086] Among them, the real-time operation parameters include: grid AGC command, real power of the station, current operation status of each PCS, PCS failure situation, real-time SOC of each battery pack;

[0087] Relevant deterministic parameters of the energy storage system include: grid power fluc...

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Abstract

The invention discloses a sustainable energy storage battery charging and discharging power balanced distribution method and system. The method comprises the following steps: acquiring related parameter data influencing energy storage power distribution; in combination with the working mode of the energy storage system, determining the energy storage demand as charging or discharging in real time; calculating energy storage distributable demand power according to energy storage charging and discharging demands in combination with each battery pack, a PCS state, SOC data and the like; sequencing the battery packs and the SOC values of the battery packs according to the SOC values of the battery packs; and distributing the energy storage distributable demand power to each battery pack in sequence according to the SOC of the battery pack to realize energy storage power distribution. According to the invention, real-time adjustment of charging and discharging power distribution is realized; the charging and discharging times and frequency of the PCS are reduced, the service life of the battery can be effectively prolonged, the operation balance of each battery pack is ensured to the greatest extent, the undesirable phenomenon that the real-time maximum chargeable and dischargeable power of the stored energy is reduced due to the fact that part of the battery packs are fully charged or discharged is avoided, and the maximum rated power of the stored energy is ensured.

Description

technical field [0001] The invention belongs to the technical field of energy storage battery management, and more specifically relates to a method and system for balancing charge and discharge power of sustainable energy storage batteries. Background technique [0002] Due to the inherent intermittent and random characteristics of new energy generation such as wind energy and solar energy, it will have adverse effects on the safe and stable operation of the power grid. The new energy station can optimize its grid-connected operation characteristics through the joint energy storage system. However, the batteries required for the energy storage system to be applied to the power generation side are large in scale and high in cost. The sustainable operation of the energy storage system and the safety of the entire energy storage system play a vital role. Therefore, how to make full use of the capacity of the energy storage battery to extend its service life is the top priority ...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCH02J7/0014H02J7/0016H02J7/0048H01M10/441
Inventor 李志强翟海龙高彦超王凡凯
Owner BEIJING HUADIAN TIANREN ELECTRIC POWER CONTROL TECH
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