The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Microgrid Island Operation Based on Power Conditioning System with Distributed Energy Resources for Smart Grid

스마트 그리드를 위한 분산자원과 전력변환장치 기반 마이크로그리드 독립운전

  • Heo, Sewan (IoT Research Division, Electronics and Telecommunications Research Institute) ;
  • Park, Wan-Ki (IoT Research Division, Electronics and Telecommunications Research Institute) ;
  • Lee, Ilwoo (IoT Research Division, Electronics and Telecommunications Research Institute)
  • Received : 2017.02.13
  • Accepted : 2017.04.05
  • Published : 2017.05.31
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Abstract

Microgrid as a unit component consisting a smart grid is an isolated system, which has a decentralized power supply system. This paper proposes an electrical isolation of the microgrid from the utiliy grid based on a power conditioning system, and also proposes an operation method maintaining the isolated state efficiently using diverse distributed energy resources such as renewable energy sources and energy storage system. The proposed system minimizes the influence of the grid connection on the internal load though a phase detection and synchrnoization to the utiligy grid and the microgrid can be stable even if the grid is failed.

스마트 그리드를 구성하는 기본 단위 요소인 마이크로그리드(Microgrid)는 전력의 중앙 공급방식에서 벗어나 독립된 하나의 체계를 이룬다. 본 논문은 전력변환장치(Power Conditioning System)를 기반으로 마이크로그리드를 계통으로부터 전기적으로 독립시키고, 신재생 에너지원과 에너지 저장장치(Energy Storage System) 등의 분산자원(Distributed Energy Resource)을 활용하여 효과적으로 독립 상태를 유지하고 운영할 수 있는 방법을 제안한다. 계통의 위상검출과 동기화를 통해 계통에 연계하거나 독립 시에 부하에 미치는 영향을 최소화할 뿐만 아니라 계통의 정전 상황에서도 안정적으로 운영이 가능하다.

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References

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