The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Protection Coordination Strategy of Microgrid Demonstration Site

마이크로그리드 실증사이트의 보호협조 전략

  • 진대근 (인하대 IT공대 전기공학부) ;
  • 최원준 (인하대 IT공대 전기공학부) ;
  • 원동준 (인하대 IT공대 전기공학부) ;
  • 이학주 (한국전력공사 전력연구원) ;
  • 채우규 (한국전력공사 전력연구원) ;
  • 박중성 (한국전력공사 전력연구원)
  • Received : 2011.12.14
  • Accepted : 2012.05.15
  • Published : 2012.07.01
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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 This means that the traditional protection of distribution network is no longer applicable and new protection methods must be developed.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

References

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  1. Frequency Control of Battery Energy Storage System with a Deadband and Restoration Control in Microgrid vol.61, pp.11, 2012, https://doi.org/10.5370/KIEE.2012.61.11.1584