Studies of commutation failures in hybrid LCC/MMC HVDC systems

被引：0
|
作者：
Li G. [1 ]
An T. [2 ]
Liang J. [1 ]
Liu W. [1 ]
Joseph T. [1 ]
Lu J. [2 ]
Lan Y. [3 ]
机构：
[1] School of Engineering, Cardiff University, Cardiff
[2] Global Energy Interconnection Research Institute, Changping District, Beijing
[3] Global Energy Interconnection Research Institute Europe GmbH, Kantstr, Berlin
来源：
Li, Gen (liyan@epri.sgcc.com.cn) | 2020年 / KeAi Publishing Communications Ltd.卷 / 03期
关键词：
Commutation failure; Fault protection; Hybrid LCC/MMC; LCC HVDC; MMC HVDC; Modular multilevel converter; multi-terminal DC;
D O I：
10.1016/j.gloei.2020.07.001
中图分类号：
TM72 [输配电技术];
学科分类号：
摘要：
A hybrid of line commutated converters (LCCs) and modular multi-level converters (MMCs) can provide the advantages of both the technologies. However, the commutation failure still exists if the LCC operates as an inverter in a hybrid LCC/MMC system. In this paper, the system behavior during a commutation failure is investigated. Both half- bridge and full-bridge MMCs are considered. Control strategies are examined through simulations conducted in PSCAD/ EMTDC. Additionally, commutation failure protection strategies for multi-terminal hybrid LCC/MMC systems with AC and DC circuit breakers are studied. This paper can contribute to the protection design of future hybrid LCC/MMC systems against commutation failures. © 2020
引用
收藏
页码：193 / 204
页数：11
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