MMC-HVDC Hybrid Blocking Topologies for Suppressing DC Fault

被引：0
|
作者：
Zhang, Jianpo [1 ]
Yan, Xiangwu [1 ]
Tian, Xingcheng [2 ]
机构：
[1] School of Electrical and Electronic Engineering, North China Electric Power University, Baoding,071001, China
[2] State Grid Tangshan Power Corporation, Tangshan,063000, China
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2017年 / 32卷 / 10期
关键词：
Bridge circuits - HVDC power transmission - Power converters;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
How to deal with DC link fault has been a technical problem for the voltage source converter based HVDC. Several kinds of improved sub-module topologies were summarized firstly in this paper based on modular multilevel converter (MMC) DC fault suppressing mechanism. An improved sub-module and a hybrid sub-module with reverse-blocking half-bridge topologies were designed to solve the additional power consumption problem. Then according to the circuit voltage equation, the DC fault suppressing characteristics and sub-module capacitor voltage balancing problem were analyzed. What's more, a self-startup method was also designed. Lastly, the simulation model built in PSCAD/EMTDC has verified the self-startup process and DC link fault suppressing features. © 2017, The editorial office of Transaction of China Electrotechnical Society. All right reserved.
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页码：61 / 68
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