PV모듈의 바이패스 다이오드 단락 고장 시 태양광어레이 회로 특성분석
Electric Circuit Analysis for PV Array on Short-Circuit Failure of Bypass Diode in PV Module
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As the installation of photovoltaic systems increases, fire accidents of PV system grow every year. Most of PV system fires have been reported to be caused by electrical components. The majority of fire accidents occurred in combiner box, which is presumed to be short-circuit accidents due to dustproof and waterproof failures or heat deterioration of blocking diode. For this reason, the blocking diode installation became optional by revised PV combiner regulation. In this paper, according to the revised regulation, reverse current that generated by voltage mismatch was measured and analyzed in PV array without a blocking diode. The factors that cause voltage mismatch in array are assumed to be shaded PV module and short circuit failure of bypass diode. As the result of experiment, there is no reverse current to flow under shading condition in module, but reverse current flows on the failure of bypass diode in module. According to the module’s I-V characteristic curve analysis, open voltage was slightly reduced due to operation of bypass diode in shading. However, it showed that open circuit voltage has decreased significantly in the failure of bypass diode. This indicates that the difference in open voltage reduction of voltage mismatch factor causes reverse current to flow
Abstract
As the installation of photovoltaic systems increases, fire accidents of PV system grow every year. Most of PV system fires have been reported to be caused by electrical components. The majority of fire accidents occurred in combiner box, which is presumed to be short-circuit accidents due to dustproof and waterproof failures or heat deterioration of blocking diode. For this reason, the blocking diode installation became optional by revised PV combiner regulation. In this paper, according to the revised regulation, reverse current that generated by voltage mismatch was measured and analyzed in PV array without a blocking diode. The factors that cause voltage mismatch in array are assumed to be shaded PV module and short circuit failure of bypass diode. As the result of experiment, there is no reverse current to flow under shading condition in module, but reverse current flows on the failure of bypass diode in module. According to the module’s I-V characteristic curve analysis, open voltage was slightly reduced due to operation of bypass diode in shading. However, it showed that open circuit voltage has decreased significantly in the failure of bypass diode. This indicates that the difference in open voltage reduction of voltage mismatch factor causes reverse current to flow
참고문헌 (17)
- Lee, J. S., "The Experimental Study on the Characteristics of the Photovoltaic System Fire", Journal of Fire Investigation Society of Korea, 9, pp.15~36 (2018)
- Laukamp, H., "PV Fire Hazard-Analysis and Assessment of Fire Incidents", 26th EUPVSEC (2013)
- PV System Component Fault and Failure Compilation and Analysis, "Klise, G. T.", ~, pp.Sandia Report, No. SAND-2018-1743 (2018)
- "IEC TS 62257-7-1:2010, Recommendations for small renewable energy and hybrid systems for rural electrification - Part 7-1: Generators - Photovoltaic generators", ~
- "KS C 8567:2019, Photovoltaic combiner box", ~
- Belhacaht, F., "Modeling, Analysis and Comparison of Solar Photovoltaics Array Configuration Under Partial Shading Conditions", Solar Energy, 120, pp.399~418 (2015)
- Jung, T. H., "Output Characteristics of PV Module Considering Partially Reverse Biased Conditions", Solar Energy, 92, pp.214~220 (2013)
- Abete, A., "Analysis of Photovoltaic Modules with Protection Diodes in Presence of Mismatching", 21st IEEE PV Specialists Conference, pp.1005~1010 (1990)
- Alonso-Garcia, M. C., "Experimental Study of Mismatch and Shading Effects in the I-V Characteristic of a Photovoltaic Module", Solar Energy Material and Solar Cells, 90, pp.329~340 (2006)
- Silvestre, S., "Study of Bypass Diodes Configuration on PV Modules", Applied Energy, 86, pp.1632~1640 (2009)
- Kim, S. T., "The Electrical Characteristics of Shading Effect in Photovoltaic Module", Journal of the Korean Solar Energy Society, pp.257~262 (2008)
- Shin, W, "Origin of Bypass Diode Fault in c-Si Photovoltaic Modules: Leakage Current under High Surrounding Temperature", Energies, 11, pp.2416~ (2018)
- 신우균, "PV 모듈 내 바이패스 다이오드 손상에 의한 열적 전기적 특성 변화 분석", 한국태양에너지학회 논문집, 35(4), pp.67~76 (2015), 한국태양에너지학회
- 정태희, "Optimal Design of PV Module with Bypass Diode to Reduce Degradation due to Reverse Excess Current", Transactions on Electrical and Electronic Materials, 15(5), pp.279~283 (2014), 한국전기전자재료학회[DOI]
- Petrone, G., "Modeling of Photovoltaic Fields in Mismatched Conditions for Energy Yield Evaluations", Electric Power Systems Research, 81, pp.1003~1013 (2011)
- Ko, S. W., "Electrical and Thermal Characteristics of Photovoltaic Modules Under Partial Shading and with a Damaged Bypass Diode", Energy, 128, pp.232~243 (2017)
- 고석환, "PV모듈의 음영 상태 및 바이패스 다이오드 단락 고장특성 분석", 한국태양에너지학회 논문집, 36(4), pp.41~47 (2016), 한국태양에너지학회