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Battery energy storage power station energy management method based on wind power prediction

A wind power prediction and battery energy storage technology, which is applied to battery circuit devices, wind power generation, collectors, etc., can solve the problems that affect the service life of batteries and cannot fully utilize the advantages of complementary characteristics of different types of energy storage systems, so as to optimize energy The effect of management and stable operation

Active Publication Date: 2015-05-20
STATE GRID CORP OF CHINA +2
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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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  • Battery energy storage power station energy management method based on wind power prediction
  • Battery energy storage power station energy management method based on wind power prediction

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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 the battery energy storage power station. The control method of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0042] Such as 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] Such as figure 2 Shown is a flow chart of an energy management method for a battery energy storage power station based on wind power prediction, which includes the following steps:

[0044] Step 1) Obtain data such as the day-ahead forecast value of wind power, the current actual wind power value, and the current controllable state value and state of charge val...

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Abstract

A method for managing the energy of a battery energy storage power station based on wind power prediction, the method comprising the following steps: acquiring the previous predicted value of wind power, a current actual wind power value, and the controllable state value and charging state value of each current energy storage unit; respectively calculating the upper and lower threshold characteristic values of wind power prediction based on the previous predicted value of the wind power; and modifying in real time the wind storage combined output control target via a finite-state machine control module, and determining the required value of the total power of a battery energy storage power station, the finite-state machine control module comprising an energy storage SOC finite-state machine and a wind power finite-state machine. The method considers the short-term predicted value of wind power in the strategy for a battery energy storage power station, thus realizing coordinated power control of the battery energy storage power station and optimal management of stored energy based on predicted wind power.

Description

technical field [0001] The invention belongs to the technical field of smart grid and energy storage and conversion, and specifically relates to a control method for a battery energy storage power station considering wind power day-ahead forecasting, and is especially suitable for coordinated control of wind storage power and battery power in wind storage combined power generation systems of various scales. Energy management of the energy storage system to improve wind power forecasting capability based on the energy storage system. 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 transm...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J15/00H02J7/00H02J3/38
CPCH02J3/28Y02E70/30H02J2300/28H02J3/381Y02E10/76
Inventor 李相俊惠东张亮贾学翠许守平王银明
Owner STATE GRID CORP OF CHINA
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