Coordination control method of large-scale energy storage device

An energy storage device and coordinated control technology, which is applied to circuit devices, battery circuit devices, and systems that store electrical energy, etc., can solve problems such as being unsuitable for large-scale energy storage devices, and achieve the effect of difficult and complex coordinated control.

Active Publication Date: 2012-09-19
XJ ELECTRIC +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a coordinated control method for large-scale energy storage devices to solve the problem that existing control strategies are not suitable for large-scale energy storage devices

Method used

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  • Coordination control method of large-scale energy storage device
  • Coordination control method of large-scale energy storage device
  • Coordination control method of large-scale energy storage device

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] This control strategy is to realize the start, stop, reset logic operation, fault protection logic operation, power distribution, calibration and balance control of energy storage batteries, and parallel control of energy storage devices for off-grid operation of energy storage devices under different working conditions.

[0024] The coordinated control strategy for large-scale energy storage devices is detailed as follows:

[0025] 1. Each module starts control and protection logic

[0026] Such as figure 1 The schematic diagram of the start-up control and protection logic of the large-scale energy storage device is shown, and the underlying control unit is equivalent to the controller of each converter in the drawing of the patent document 201110231953.5 mentioned in the background technology. The coordinating controller and the lower layer control...

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Abstract

The invention relates to a coordination control method of a large-scale energy storage device. A coordination controller is used for controlling the startup and the shutdown of bottom layer control units; the bottom layer control units are used for feeding back the fault and a running state to the coordination controller; the coordination controller is used for monitoring the state of a bottom layer module and the allowable maximum charging / discharging power of a storage battery; a power control unit is used for distributing the power rating to each bottom layer control unit according to the proportional distribution; in the off-grid operation, a power balance control manner capable of avoiding the circulation of an inverter is adopted; and the balance of the storage battery is performed in an automatic balancing manner in a system shutdown or standby state. The coordination control method has the benefits that the difficult problem of multi-objective coordination control of the large-scale energy storage device is solved, a basis is laid for the research and development, and the popularization of the large-scale energy storage device, and the theoretical significance and the engineering practical significance are very important.

Description

technical field [0001] The invention relates to a coordinated control method for large-scale energy storage devices. Background technique [0002] Large-scale energy storage devices are currently in the demonstration operation stage at home and abroad, and have not yet been widely promoted. Most of the demonstration projects that have been put into operation are small-capacity demonstration energy storage devices, and most of them use one-stage conversion. In the application environment of off-grid operation , most of them run on a single machine. [0003] Problems and shortcomings of the current method: the development of energy storage devices is in its infancy both at home and abroad. At present, there is no coordinated control strategy for large-scale energy storage devices suitable for energy storage devices in China. [0004] The Chinese patent application "A Large-Scale Energy Storage Device and Its Main Circuit" with application number 201110231953.5 provides a mai...

Claims

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Application Information

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IPC IPC(8): H02J15/00H02J7/00
Inventor 陈世锋韩健张建兴曹智慧张冲
Owner XJ ELECTRIC
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