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http://dx.doi.org/10.5370/KIEE.2014.63.11.1491

An Improved Topology of DC Circuit Breaker Based on Inverse Current Injection Method  

Cho, Young-Bae (Dept. of Electrical Engineering, Incheon National Univ.)
Son, Ho-Ik (Dept. of Electrical Engineering, Incheon National Univ.)
Kim, Hak-Man (Research Institute for Northeast Asian Super Grid, Incheon National Univ.)
Kwak, Joosik (Korea Electric Power Corporation Research Institute)
An, Yong-Ho (Korea Electric Power Corporation Research Institute)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.63, no.11, 2014 , pp. 1491-1496 More about this Journal
Abstract
VSC-HVDC system is vulnerable to a DC fault because the fault current can be injected from AC system to DC system during the fault. Therefore, DC circuit breaker is required to isolate faults in VSC-HVDC system. The inverse current injection method of circuit breaker has been considered as DC circuit breaker. However, the topology has drawback that the breaking time is longer than hybrid circuit breaker using semiconductor devices. In order to solve this problem, this paper proposes an improved topology of circuit breaker based on inverse current injection method. In addition, the proposed topology will be compared with the existing topology. And we will verify its effects by using the simulation results.
Keywords
VSC-HVDC; Inverse Current Injection Method; Circuit Breaker; Breaking Time;
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