DC Fault Ride-Through Control of Half-Bridge MMCs for the HVDC Grid with DC Circuit Breakers

IF 1 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEJ Journal of Industry Applications Pub Date : 2023-05-01 DOI:10.1541/ieejjia.22006950

Atsushi Chiba, Kenichiro Sano, Yushi Koyama, Kei Sekiguchi, Takahiro Ishiguro, Daichi Suzuki

引用次数: 0

Abstract

Operation delay of DC circuit breakers causes a voltage sag of several milliseconds in high-voltage DC (HVDC) grids. The DC voltage sag can cause an overcurrent in the DC side of the modular multilevel converter (MMC), resulting in halting the MMC. This study investigates a method to facilitate continuous operation of the half-bridge MMC during a DC voltage sag. The proposed method performs feedback control of the DC current during DC voltage sags by decreasing the DC and AC voltages of the half-bridge MMC. When the method is applied to symmetrical monopole HVDC systems, the MMC can maintain both its DC and AC currents within the rated range during the voltage sag caused by pole-to-ground faults. Simulation results obtained by a three-terminal HVDC grid verify the DC fault ride-through capability of the half-bridge MMC.

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带直流断路器的高压直流电网半桥mmc的直流故障穿越控制

在高压直流(HVDC)电网中，直流断路器的运行延迟会导致几毫秒的电压凹陷。直流电压凹陷会导致模块化多电平变换器(MMC)直流侧的过流，导致MMC停止工作。本研究探讨了一种在直流电压跌落时使半桥式MMC连续工作的方法。该方法通过降低半桥式MMC的直流和交流电压，在直流电压下降时对直流电流进行反馈控制。将该方法应用于对称单极直流输电系统中，在极地故障引起的电压暂降期间，MMC系统的直流和交流电流均能保持在额定范围内。三端高压直流电网的仿真结果验证了半桥式MMC的直流故障穿越能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEJ Journal of Industry Applications ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

2.80

自引率

17.60%

发文量

期刊介绍： IEEJ Journal of Industry Applications: Power Electronics - AC/AC Conversion and DC/DC Conversion, - Power Semiconductor Devices and their Application, - Inverters and Rectifiers, - Power Supply System and its Application, - Power Electronics Modeling, Simulation, Design and Control, - Renewable Electric Energy Conversion　　　 Industrial System - Mechatronics and Robotics, - Industrial Instrumentation and Control, - Sensing, Actuation, Motion Control and Haptics, - Factory Automation and Production Facility Control, - Automobile Technology and ITS Technology, - Information Oriented Industrial System Electrical Machinery and Apparatus - Electric Machines Design, Modeling and Control, - Rotating Motor Drives and Linear Motor Drives, - Electric Vehicles and Hybrid Electric Vehicles, - Electric Railway and Traction Control, - Magnetic Levitation and Magnetic Bearing, - Static Apparatus and Superconductive Application Publishing Ethics of IEEJ Journal of Industry Applications: 　　　 Code of Ethics on IEEJ IEEJ Journal of Industry Applications is a peer-reviewed journal of IEEJ (the Institute of Electrical Engineers of Japan). The publication of IEEJ Journal of Industry Applications is an essential building article in the development of a coherent and respected network of knowledge. It is a direct reflection of the quality of the work of the authors and the institutions that support them. IEEJ Journal of Industry Applications has "Peer-reviewed articles support." It is therefore important to agree upon standards of expected ethical behavior for all parties involved in the act of publishing: the author, the journal editor, the peer reviewer and IEEJ (the Institute of Electrical Engineers of Japan).