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http://dx.doi.org/10.5370/KIEE.2012.61.7.966

Protection Coordination Strategy of Microgrid Demonstration Site  

Jin, Dae-Geun (인하대 IT공대 전기공학부)
Choi, Won-Jun (인하대 IT공대 전기공학부)
Won, Dong-Jun (인하대 IT공대 전기공학부)
Lee, Hak-Ju (한국전력공사 전력연구원)
Chae, Woo-Kyu (한국전력공사 전력연구원)
Park, Jung-Sung (한국전력공사 전력연구원)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.61, no.7, 2012 , pp. 966-973 More about this Journal
Abstract
In microgrid demonstration site, distributed generations can make bidirectional power flows on the system. If an accident occurs, the fault current from the inverter based distributed generation is small. However, the conventional protection scheme in distribution network is designed to operate at high fault current. This means that the traditional protection of distribution network is no longer applicable and new protection methods must be developed. In this paper, for two cases, algorithms for protection coordination of demonstration site is proposed and verified through PSCAD/EMTDC simulation. In first case, protection devices are assumed to have the abilities of directional relaying and communication. In second case, protection devices do not have those abilities. Proposed protection coordination algorithms detect the fault locations and protect the microgrid fairly well.
Keywords
Microgrid; protection coordination; Protection device; Distributed generation; Fault;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 1
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