Power Reversal Strategies for Hybrid LCC/MMC HVDC Systems

被引：30
|
作者：
Li, Gen [1 ]
An, Ting [2 ]
Liang, Jun [1 ]
Liu, Wei [1 ]
Joseph, Tibin [1 ]
Lu, Jingjing [2 ]
Szechtman, Marcio [3 ]
Andersen, Bjarne R. [4 ]
Lan, Yuanliang [5 ]
机构：
[1] Cardiff Univ, Sch Engn, Cardiff CF24 3AA, Wales
[2] Global Energy Interconnect Res Inst, Beijing 102211, Peoples R China
[3] Eletrobras Cepel, BR-26053121 Rio De Janeiro, Brazil
[4] Andersen Power Elect Solut, Bexhill On Sea TN39 4QL, England
[5] Global Energy Interconnect Res Inst Europe GmbH, Kantstr 162, Berlin, Germany
来源：
CSEE JOURNAL OF POWER AND ENERGY SYSTEMS | 2020年 / 6卷 / 01期
关键词：
FB-MMC; HB-MMC; hybrid LCC/MMC; LCC-HVDC; MMC-HVDC; power reversal; LCC;
D O I：
10.17775/CSEEJPES.2019.01050
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：
Power reversal control strategies for different types of hybrid line-commutated-converter (LCC)/modular multi-level converter (MMC) based high-voltage direct-current (HVDC) systems have been proposed with the consideration of system configurations and MMC's topologies. The studies show that the full-bridge (FB) MMC gives better performance than half-bridge (HB) MMCs in terms of power reversal in hybrid LCC/MMC systems. The modulation method employed in this paper can achieve a smooth online polarity reversal for hybrid LCC/FB-MMC HVDC systems. Additional DC switches and/or discharging resistors may be needed to reverse the DC polarity of LCC/HB-MMC HVDC systems. Based on the proposed strategies, the power reversal processes of the studied systems can be accomplished within several seconds. The speed can be changed according to system operation requirements. The effectiveness of the proposed control strategies has been verified through simulations conducted in PSCAD/EMTDC.
引用
收藏
页码：203 / 212
页数：10
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