Research on a Multiport Parallel Type Hybrid Circuit Breaker for HVDC Grids:Modeling and Design  

作　　者：Xinming Guo Jin Zhu Qingpeng Zeng Hao Xiao Tongzhen Wei 

机构地区：[1]Institute of Electrical Engineering,Chinese Academy of Sciences and University of Chinese Academy of Sciences,Beijing 100190,China

出　　处：《CSEE Journal of Power and Energy Systems》2023年第5期1732-1742,共11页中国电机工程学会电力与能源系统学报（英文）

基　　金：supported by the Institute of Electrical Engineering,CAS under grant(E155610101,E155610201 and E155610301).

摘　　要：This paper proposes a star type multiport hybrid circuit breaker(Star-HCB)topology for protection of multiterminal DC transmission.Reliability and stability of high voltage DC(HVDC)grids are determined by their capabilities to withstand DC-side faults.In order to maintain reliability of HVDC grids,both ends of each line should be equipped with hybrid circuit breakers(HCB).This method will increase expenditure of the HVDC,especially the meshed topology.The n-port Star-HCB consists of ultra-fast mechanical disconnectors,load current switch and only one transferring branch which is formed by improved half-bridge sub-module.Compared with existing traditional hybrid circuit breakers and other multiport hybrid circuit breakers,the proposed topology can realize the same short-circuit blocking goal using fewer components.Detailed mathematical transient process calculation and timedomain simulation of the proposed Star-HCB are given to verify its superiority.

关 键 词：Fault blocking HVDC grids half-bridge submodule hybrid circuit breaker MULTI-PORT 

分 类 号：TM762.2[电气工程—电力系统及自动化]