Converter device and flow battery energy storage system
A technology of a flow battery and a converter device, applied in the field of energy storage, can solve the problems of neglecting the application value of the flow battery
Active Publication Date: 2017-12-15
GUANGZHOU ZHIGUANG ELECTRIC CO LTD +1
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Problems solved by technology
However, the application value of flow batteries in large-capacity or even ultra-large-capacity energy storage power stations should not be ignored
Method used
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[0048] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0049] figure 1 A schematic structural view of a flow conversion device according to an embodiment of the present invention is shown, and the device can be applied in a flow battery energy storage system. Such as figure 1 As shown, the converter device 100 includes: a main switch 110 , a transformer unit 120 , one or more power units 130 , and a main controller 140 .
[0050] The input end of the main switch 110 is used to connec...
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The present invention discloses a converter device and a flow battery energy storage system. The device is applied in the flow battery energy storage system, and comprises: a master switch, a voltage transformation unit, one or more than one power units, and a main controller; the input end of the master switch is configured to connect with an alternating current terminal; the output end of the master switch is connected with the first end of the voltage transformation unit, and the control end of the master switch is connected with the main controller; the second end of the voltage transformation unit comprises one or more than one interfaces, and the one or more than one interfaces are connected with alternating current end of one power unit; the direct current ends of the one or more than one power units are connected with flow battery stacks; the voltage transformation unit is configured to perform high-voltage and low-voltage transformation; and the control ends of the one or more than one power units are connected with the control end of the main controller to perform alternating current and direct current transformation according to a control instruction sent by the main controller. The converter device and the flow battery energy storage system can realize simultaneous connection of a plurality of flow battery stacks and perform uniform energy conversion.
Description
technical field [0001] The invention relates to the technical field of energy storage, in particular to a flow conversion device and a liquid flow battery energy storage system. Background technique [0002] In recent years, battery energy storage technology has developed rapidly, and more and more energy storage systems using various types of batteries as energy storage media have begun to be put into operation in power systems and power users. In order to improve the stability of power systems, Power supply reliability and other aspects have played a very positive role. Among them, dry batteries represented by lithium batteries have the advantages of convenient use and easy maintenance, while flow batteries represented by vanadium batteries have the advantages of large energy, high energy efficiency, and easy site selection. Judging from recent development trends, dry batteries are more widely used, especially in the fields of electric vehicles and mobile energy storage. ...
Claims
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Login to View More IPC IPC(8): H02J3/32
CPCH02J3/32Y02E40/10
Inventor 石磊许贤昶姜新宇吴胜兵
Owner GUANGZHOU ZHIGUANG ELECTRIC CO LTD