한국전자통신학회논문지 (The Journal of the Korea institute of electronic communication sciences)

한국전자통신학회 (Korea Institute of Electronic Communication Science)
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VPP 클라우드 요금 산정에 관한 연구

A Study on Determination of VPP Cloud Charges

  • 임충환 (국립목포대학교 대학원) ;
  • 김동섭 (국립목포대학교 전기 및 제어공학과) ;
  • 문채주 (국립목포대학교 스마트그리드연구소)
  • 투고 : 2021.12.20
  • 심사 : 2022.04.17
  • 발행 : 2022.04.30
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초록

최근 에너지전환정책은 소규모 태양광발전기 수량을 증가시키고 있다. 계통운영자는 이러한 소규모 태양광 발전량을 정확하게 예측하기가 어렵고 급전계획을 방해할 수도 있으며, 결과적으로 비용상승이 초래될 것이다. 이러한 문제를 해결하는 방법으로 소규모 태양광발전소에서 생산되는 발전량, 전압제어에 대하여 불확실성을 줄이고 예비전력을 공급하는 소규모 태양광발전소의 집합체로서 가상발전소가 떠오르고 있다. 본 연구에서는 가상발전소 클라우드 요금산정을 위하여 순현재가치법과 수익성지수법을 사용하며, 두 종류의 비용평가법 계산결과가 상세하게 설명된다. 계산결과로부터 수익성지수가 1.22로 산정되어 수익성을 확보한 것으로 나타났으며, 순현재가치가 수익성을 충분히 만족시키기 때문에 중개사업자 관점에서 매력적이다.

Recent, energy transition policies are driving to increase in the number of small photovoltaic(PV) generators. It is difficult for system operators to accurately anticipate the amount of power generated from such small scale PV generation, and this may disrupt dispatch schedules and result in an increase in cost. The need for a Virtual Power Plant(VPP) is emerging as a way of resolving these problems, as it would integrate small-scale PV plants and eliminate uncertainty about the amount of power generated, control voltage, and provide power reserves. In this paper, the cost evaluation methods are described for determination of VPP cloud charges both Net Present Value(NPV) method and Profitability Index(PI) method, the calculated outcomes of the two types of cost evaluation methods are presented in detail. It seems we secure profitability as we get 1.22 of profitability index from calculation results, it may be attractive for the aggregator as NPV is enough for satisfying profitability.

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참고문헌

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