一种适用于 MMC-HVDC 系统交流侧接地故障的控制策略。

A Control Strategy for Ground Fault on the AC Side of MMC-HVDC System.

机构信息

School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China.

State Grid Zhangjiakou Electric Power Supply Company, Zhangjiakou 075000, China.

出版信息

Comput Intell Neurosci. 2022 Sep 27;2022:1776209. doi: 10.1155/2022/1776209. eCollection 2022.

DOI:10.1155/2022/1776209

PMID:36203730

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9532083/

Abstract

This study explores a control strategy for a flexible Modular Multilevel Converter-High Voltage Direct Current (MMC-HVDC) system when there is an asymmetrical fault with the AC side system voltage. Aiming at the characteristic that the fault system has a negative sequence current path, this paper proposes a positive/negative sequence controller to ensure the output of original active power, and the validity of the proposed control strategy is verified by using simulation software PSCAD/EMTDC.

摘要

本研究探讨了在交流侧系统电压存在不对称故障时，灵活模块化多电平换流器-高压直流（MMC-HVDC）系统的控制策略。针对故障系统具有负序电流通路的特点，本文提出了一种正/负序控制器，以确保原始有功功率的输出，并通过使用 PSCAD/EMTDC 仿真软件验证了所提出控制策略的有效性。