Analysis of Modular Multilevel Converters with DC Short Circuit Fault Blocking Capability in Bipolar HVDC Transmission Systems

被引：0
|
作者：
Nami, Alireza [1 ]
Liang, Jiaqi [1 ]
Dijkhuizen, Frans [1 ]
Lundberg, Peter [1 ]
机构：
[1] ABB Corp Res, Forskargrand 7, S-72178 Vasteras, Sweden
来源：
2015 17TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'15 ECCE-EUROPE) | 2015年
关键词：
Modular multilevel converter; bipolar hvdc transmission; DC fault blocking;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This paper analyzes the station-internal phase-to-ground fault in bipolar HVDC transmission systems. An overvoltage problem due to the existence of the bipolar cells in the modular multilevel converter (MMC) arms closer to the grounding pole are presented. Consequently, a new hybrid arm MMC is proposed to overcome the overvoltage problem while providing the benefits of: a lower number of cells, fewer switching devices and lower conduction losses. Guidelines are developed and confirmed by simulation results to determine the required number of cells to block the DC side fault.
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页数：10
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