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Hybrid back-to-back intelligent soft switch topological structure, control system and control method

A technology of intelligent soft switching and topological structure, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of high cost, large capacity and large volume of back-to-back SOP design

Active Publication Date: 2018-11-06
SHANDONG UNIV
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Problems solved by technology

[0005] However, the design capacity of the back-to-back SOP is determined by the maximum power it needs to transfer, resulting in a large design capacity, high cost and large volume of the traditional back-to-back SOP

Method used

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  • Hybrid back-to-back intelligent soft switch topological structure, control system and control method
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  • Hybrid back-to-back intelligent soft switch topological structure, control system and control method

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Embodiment Construction

[0057] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0058] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0059] Terminology explanation part: Regarding the soft connection mode of operation, the present invention defines the ...

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Abstract

The invention discloses a hybrid back-to-back intelligent soft switch topological structure, a control system and a control method; the hybrid back-to-back intelligent soft switch topological structure comprises a power converter and a load switch, wherein the power converter is composed of two power electronic converters and a common direct-current chain capacitor; the two ends of the power converter are connected into a power distribution network in parallel through an isolation transformer; the load switch and the power converter are connected in parallel to be connected into the power distribution network; under the normal working mode, only the power converter is used for regulating and controlling the power flow and voltage distribution of the distribution network system; under a line fault mode, the load switch bears a power supply recovery function, and the power converter only processes a part of the transfer power; and after the fault is cleared, all the switching power between feeder lines is controlled to flow through the power converter, and the power which flows through the load switch is zero, so that zero-current opening and disconnection of the load switch are realized, wherein the power converter is a non-full-power back-to-back power converter.

Description

technical field [0001] The invention relates to the technical field of electrical control, in particular to a hybrid back-to-back intelligent soft switch topology, a control system and a control method. Background technique [0002] The access of distributed power generation brings severe challenges to the power supply quality and economic operation of the distribution network. Traditional distribution network control technology (including network reconfiguration technology based on switch operation and transformer on-load voltage regulation, etc.) is difficult to adapt to the complex and changeable operating conditions of active distribution network. The power electronic compensation equipment such as dynamic voltage compensator, unified power quality controller and unified power flow controller can realize the flexible control of distribution network power flow and voltage, and is an important control device for optimizing the operation and control of active distribution n...

Claims

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Application Information

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IPC IPC(8): H02J3/00
Inventor 高峰蒿天衢葛雪峰张祯滨郝全睿
Owner SHANDONG UNIV
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