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: 2013-07-03
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

Examples

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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

The invention relates to a megawatt battery energy storage power station real-time power control method and a system thereof. The method includes the following steps of A), reading a total power demand of a battery energy storage power station and related operation data of the power station in real time, and conducting storing and managing on the total power demand and the operation data; B) obtaining initial power command value of battery energy storage subelements of the battery energy storage power station; C) conducting real-time diagnosis and amendment on the initial power command value of the battery energy storage subelements so as to confirm power command value to be allocated to the battery energy storage subelements; and D) after the power command value of the battery energy storage subelements is collected, outputting the power command value to the battery energy storage power station so as to achieve real-time control on the battery energy storage power station. The system comprises a communication module, a data storage and management module, a total power initial allocation control module and a real-time adjusting module. The method and the system can conveniently and efficiently achieve the aims of controlling and allocating of real-time power of a megawatt lithium ion battery energy storage power station.

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 Applications(China)
IPC IPC(8): H02J7/00H02J3/38
CPCH02J15/00H02J3/32H02J2203/20
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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