넷 제로에너지주택의 부하매칭에 관한 연구
A Study of Load Matching on the Net-Zero Energy House
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참고문헌
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초록
nZEH (net-Zero Energy House) is defined as a self-sufficient energy building where the sum of energy output generated from new & renewable energy system and annual energy consumption is zero. The electricity generated by new & renewable energy system with the form of distributed generation is preferentially supplied to electrical demand, and surplus electricity is transmitted back to grid. Due to the recent expansion of houses with photovoltaic system and the nZEH mandatory by 2025, the rapid increase of distributed generation is expected. Which means, we must prepare for an electricity-power accident and stable electricity supply. Also electricity charges have to be reduce and the grid-connected should be operated efficiently. The introduction of ESS is suggested as a solution, so the analysis of the load matching and grid interaction is required to optimize ESS design. This study analyzed the load matching and grid interaction by expected consumption behavior using actual data measured in one-minute intervals. The experiment was conducted in three nZEH with photovoltaic system, called all-electric houses. LCF (Load Cover Factor), SCF (Supply Cover Factor) and fgrid (Grid Interaction Index) were evaluated as an analysis indicator. As a result, LCF, SCF and fgrid of A house were 0.25, 0.23 and 0.27 respectively; That of B house were 0.23, 0.23, 0.19, and that of C were 0.20, 0.19, 0.27 respectively.
Abstract
nZEH (net-Zero Energy House) is defined as a self-sufficient energy building where the sum of energy output generated from new & renewable energy system and annual energy consumption is zero. The electricity generated by new & renewable energy system with the form of distributed generation is preferentially supplied to electrical demand, and surplus electricity is transmitted back to grid. Due to the recent expansion of houses with photovoltaic system and the nZEH mandatory by 2025, the rapid increase of distributed generation is expected. Which means, we must prepare for an electricity-power accident and stable electricity supply. Also electricity charges have to be reduce and the grid-connected should be operated efficiently. The introduction of ESS is suggested as a solution, so the analysis of the load matching and grid interaction is required to optimize ESS design. This study analyzed the load matching and grid interaction by expected consumption behavior using actual data measured in one-minute intervals. The experiment was conducted in three nZEH with photovoltaic system, called all-electric houses. LCF (Load Cover Factor), SCF (Supply Cover Factor) and fgrid (Grid Interaction Index) were evaluated as an analysis indicator. As a result, LCF, SCF and fgrid of A house were 0.25, 0.23 and 0.27 respectively; That of B house were 0.23, 0.23, 0.19, and that of C were 0.20, 0.19, 0.27 respectively.
참고문헌 (7)
- Ahn, J. B., "Distributed Generation and Grid Connection Technology", Journal of Electrical World Monthly Magazine, (347), pp.12~20 (2005)
- Annex 52, "Analysis of Load Match and Grid Interaction Indicators in NZEB with High-Resolution Data, IEA Task 40", pp.2013, Salom, J.
- Voss, K, "Load Matching and Grid Interaction of Net Zero Energy Buildings", EuroSun 2010 (2010)
- Salom, J., "Understanding Net Zero Energy Buildings: Evaluation of Load Matchinbg and Grid Interaction Indicators", 12th Conference of International Building Performance Simulation Association (2011)
- Salom, J., "Analysis of Load Match and Grid Interaction Indicators in Net Zero Energy Buildings with Simulated and Monitored Data", Applied Energy, 136, pp.119~131 (2014)[DOI]
- A Survey on the Current State of ESS Enlargement Policies and Proposal for Introduction of Domestic ESS in Response to the New Climate Regime, "INI R&C", Korea Energy Agency, ~ (2017)
- 백남춘, "실측데이터를 이용한 저에너지주택의 에너지성능평가", 설비공학 논문집, 27(7), pp.369~374 (2015), 대한설비공학회[DOI]