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Unified power flow controller (UPFC) system based on direct AC-converter hexverter-modular multilevel converter (H-MMC) and passive control method thereof

A technology of commutation flow and converter, applied in the field of unified power flow controller design, can solve the problems of complex circulation suppression strategy, large number of circulation, high construction cost, etc., to avoid modeling errors and parameter interference, improve transmission efficiency, Effects with ease of control

Active Publication Date: 2019-12-20
STATE GRID FUJIAN POWER ELECTRIC CO ECONOMIC RES INST +2
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Problems solved by technology

However, M3C also has the disadvantages of a large number of bridge arms and high construction costs. At the same time, the topology has a large number of circulations, which makes the circulation suppression strategy very complicated.

Method used

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  • Unified power flow controller (UPFC) system based on direct AC-converter hexverter-modular multilevel converter (H-MMC) and passive control method thereof
  • Unified power flow controller (UPFC) system based on direct AC-converter hexverter-modular multilevel converter (H-MMC) and passive control method thereof
  • Unified power flow controller (UPFC) system based on direct AC-converter hexverter-modular multilevel converter (H-MMC) and passive control method thereof

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[0044] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] It should be pointed out that the following detailed description is exemplary and is 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.

[0046] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations 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 combina...

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Abstract

The invention relates to a unified power flow controller (UPFC) system based on a direct AC-converter hexverter-modular multilevel converter (H-MMC) and a passive control method thereof. A new hexagondirect AC-converter, Hexverter-Modular Multilevel Converter (H-MMC), is applied to a Unified Power Flow Controller (UPFC), and an Interconnection and Damping Assignment Passivity-Based Control (IDA-PBC) method is designed, thereby realizing active and reactive power flow distribution of a UPFC adjusting circuit and the function of voltage amplitude phase.

Description

technical field [0001] The invention relates to the design field of a unified power flow controller, in particular to a UPFC system based on a direct AC-converter H-MMC and a passive control method thereof. Background technique [0002] With the application of power electronic technology more and more widely in power system, flexible alternating current transmission (FACTS) technology emerges at the historic moment. This technology integrates power electronics technology with the power system, and uses power electronic devices to solve various problems in the power system, such as voltage control, reactive power compensation, power flow distribution control, suppression of subsynchronous resonance and damped oscillation, and improvement of system transient state. stability etc. At the heart of the FACTS technology is the FACTS device. Unified Power Flow Controller (UPFC), as the most representative type of device, can not only adjust the active and reactive power distribut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06
CPCH02J3/06
Inventor 叶荣易杨吴威林章岁孟永庆邹艺超黄明煌
Owner STATE GRID FUJIAN POWER ELECTRIC CO ECONOMIC RES INST
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