Multi-type battery energy storage power station energy management method taking charge-discharge rate into account

一种充放电倍率、电池储能的技术，应用在充电/放电电流/电压调节、电池电路装置、存储电能的系统等方向，能够解决影响电池使用寿命、不能充分发挥不同类型储能系统互补特性优势等问题，达到延长使用寿命、实现能量管理及实时控制的效果

Active Publication Date: 2015-02-11
STATE GRID CORP OF CHINA +4
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AI Technical Summary

Problems solved by technology

In the existing large-scale battery energy storage system / power station power control and energy management methods, the charge and discharge rate characteristics of the energy storage battery are generally not included in the constraints for energy management. Complementary characteristics of the energy system, and disadvantages such as affecting the service life of the battery

Method used

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  • Multi-type battery energy storage power station energy management method taking charge-discharge rate into account
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  • Multi-type battery energy storage power station energy management method taking charge-discharge rate into account

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Embodiment Construction

[0041]The control method of the present invention can be applied to the coordinated control and energy management of multi-type lithium battery energy storage power stations or multi-type energy storage power stations of energy storage systems such as lithium batteries, flow batteries, supercapacitors, and sodium-sulfur batteries. Taking multi-type lithium batteries as an example, the control method of the present invention will be further described in detail in conjunction with the accompanying drawings.

[0042] like figure 1 As shown, the lithium battery energy storage power station includes a bidirectional converter and a plurality of lithium battery energy storage units. The bidirectional converter can execute the start-stop control and charge and discharge power commands of the lithium battery energy storage unit.

[0043] like figure 2 Shown is a flowchart of a coordinated control and energy management method for multi-type energy storage power plants, which specifica...

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Abstract

An energy management method for various types of battery energy storage power stations taking into account a charge-discharge rate, comprising: reading related data of a battery energy storage power station in real time; calculating a characteristic value of the charge or discharge rate of each battery energy storage unit; calculating an initial power command value of each battery energy storage unit; judging in real time whether the initial power command value of each battery energy storage unit goes beyond the permitted maximum charge or discharge power of the unit or not; if yes, conducting online correction and recalculation on the initial power command value of each battery energy storage unit; otherwise, setting the initial command value of the energy storage unit as a power command value thereof; and summarizing the power command value of each battery energy storage unit and outputting same. The method has an object of reasonably controlling the charge-discharge rate of each energy storage unit, and performs power coordination control and energy management inside the energy storage power station, and also takes into account the service life of an energy storage battery in a control policy, so as to fulfill the functions of avoiding the abusing of the energy storage battery, decelerating the battery ageing, etc. as far as possible.

Description

technical field [0001] The invention belongs to the technical field of smart grid and energy storage and conversion, and specifically relates to a real-time power control method and an energy management system for a large-power and large-capacity megawatt-level battery energy storage power station considering the characteristics of battery charge and discharge rates, and is especially suitable for large Battery power and battery energy management methods for megawatt-scale multi-type battery energy storage power stations in large-scale wind-solar-storage combined power generation systems. 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J15/00H02J7/00
CPCH02J7/00H02J15/00H02J3/32H02J7/007H02J7/04G05B15/02
Inventor 李相俊惠东来小康高明杰刘少宇
Owner STATE GRID CORP OF CHINA
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