The Use of Averaged-Value Model of Modular Multilevel Converter in DC Grid

被引：155

作者：

Xu, Jianzhong ^{[1
,2
]}

Gole, Aniruddha M. ^{[3
]}

Zhao, Chengyong ^{[1
]}

机构：

[1] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China

[2] Univ Manitoba, Winnipeg, MB R3T 5V6, Canada

[3] Univ Manitoba, Elect & Comp Engn Dept, Winnipeg, MB R3T 5V6, Canada

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2015年 / 30卷 / 02期

基金：

加拿大自然科学与工程研究理事会; 国家高技术研究发展计划(863计划);

关键词：

Averaged-value model (AVM); detailed model (DM); electromagnetic transient (EMT); modular multilevel converter (MMC); submodule (SM); MMC;

D O I：

10.1109/TPWRD.2014.2332557

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper investigates the applicability of averaged-value models (AVMs) for modular multilevel converters (MMCs) operating in a voltage-sourced converter-based-high-voltage dc (VSC-HVDC) grid. The AVM models are benchmarked by comparison with a detailed electromagnetic transient model of the grid, including a fully detailed MMC model. Analysis results show that the AVM is only effective as long as the capacitors are large enough to maintain nearly constant voltage across each MMC sub-module. This paper also shows that previously developed MMC averaged models are not able to accurately simulate the transients under dc fault conditions. This paper introduces topology changes to a previously proposed averaged model that results in much improved simulation for such conditions. This paper also shows that the model can be used effectively to study HVDC grids with significant time savings.

引用

页码：519 / 528

页数：10

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