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Megawatt battery energy storage power station real-time power control method and system thereof

A technology for battery energy storage and control methods, which is applied to systems for storing electric energy, battery circuit devices, collectors, etc., and can solve problems such as the impact of battery life

Active Publication Date: 2014-12-31
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] From the perspective of battery energy storage, overcharging and overdischarging will affect the life of the battery

Method used

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  • Megawatt battery energy storage power station real-time power control method and system thereof
  • Megawatt battery energy storage power station real-time power control method and system thereof
  • Megawatt battery energy storage power station real-time power control method and system thereof

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Embodiment Construction

[0053] The control method and system of the present invention can be applied to lithium-ion battery energy storage power stations or sodium-sulfur battery energy storage power stations. The control method and system of the present invention will be further described in detail below taking lithium-ion batteries as an example and referring to the accompanying drawings.

[0054] Such as figure 1 As shown, the lithium-ion battery energy storage power station includes a bidirectional converter and a plurality of lithium-ion battery energy storage sub-units, and the start-stop control and charging and discharging power commands of the lithium-ion battery energy storage sub-units can be executed through the bidirectional converter Wait.

[0055] figure 2 A structural block diagram of an embodiment of a real-time power distribution control system for a lithium-ion battery energy storage power station is shown. Such as figure 2 As shown, the control system in this example is reali...

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Abstract

Disclosed is a real-time power control method and system for a megawatt battery energy storage power station. The method comprises: reading in real time the total power demand of the battery energy storage power station and the operational data related to the power station, and storing and managing the total power demand and the operational data; obtaining the initial power command values of battery energy storage sub-units in the battery energy storage power station; diagnosing and modifying in real time the initial power command values of the battery energy storage sub-units, so as to determine power command values to be allocated to the battery energy storage sub-units; and collecting the power command values of the battery energy storage sub-units and outputting them to the battery energy storage power station, so as to achieve a real-time power control of the battery energy storage power station. The system comprises a communication module (10), a data storage and management module (20), an initial distribution and control module for the total power (30), and a real-time regulation module (40). The method and system can conveniently and effectively achieve the real-time control and distribution of power for a megawatt energy storage power station with lithium ion batteries.

Description

technical field [0001] The invention belongs to the technical field of smart grid and energy storage and conversion, and specifically relates to a rule-based real-time power control method and system for a large-power and large-capacity megawatt-level battery energy storage power station, and is especially suitable for large-scale wind-solar-storage combined power generation systems Battery power and battery energy management methods for medium-megawatt battery energy storage power stations. Background technique [0002] The National Wind-Storage Storage and Transmission Demonstration Project is the first batch of pilot projects of the State Grid Corporation of China to build a strong and smart grid. It is the world's largest comprehensive renewable energy demonstration project integrating wind power, photovoltaic power generation, energy storage and power transmission projects. Among them, the national wind power storage and transmission demonstration project (phase I) pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J3/38
CPCH02J15/00H02J3/32H02J2003/007H02J2203/20
Inventor 李相俊惠东来小康闫忠平雷为民张亮李又宁
Owner CHINA ELECTRIC POWER RES INST
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