Electric Circuit Analysis for PV Array on Short-Circuit Failure of Bypass Diode in PV Module

Chung-Geun Lee; Woo-Gyun Shin; Jong Rok Lim; Hye-Mi Hwang; oung-Chul Ju; Young-Seok Jung; Gi-Hwan Kang; Hyo-Sik Chang; Suk-Whan Ko

doi:10.7836/kses.2019.39.6.015

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2019 Vol.39, Issue 6 Preview Page Next Page

Research Article

Electric Circuit Analysis for PV Array on Short-Circuit Failure of Bypass Diode in PV Module PV모듈의 바이패스 다이오드 단락 고장 시 태양광어레이 회로 특성분석

31 December 2019. pp. 15-25

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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.

Keywords

Blocking diode

Bypass diode

PV array

Combiner box

Mismatch

Short-circuit

키워드

역류 방지 다이오드

바이패스 다이오드

어레이

접속함

미스매치

단락 회로

References

Lee, J. S., Heo, J. P., Kim, S. J., Choi, W. G., Lee, W. J., Lee, S. M., and Jeong, Y. S., The Experimental Study on the Characteristics of the Photovoltaic System Fire, Journal of Fire Investigation Society of Korea, Vol. 9, pp. 15-36, 2018.

Laukamp, H., Bopp, G., Grab, R., Wittwer, C., Häberlin, H., Heeckeren, B., Phillip, S., Reil, F., Schmidt, H., Sepanski, A., Thiem, H., and Vaassen, W., PV Fire Hazard-Analysis and Assessment of Fire Incidents, 26th EUPVSEC, 2013.

Klise, G. T., Lavrova, O., and Gooding, R, PV System Component Fault and Failure Compilation and Analysis, Sandia Report, No. SAND-2018-1743, 2018.

10.2172/142488731501638

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. and Larbes, C, Modeling, Analysis and Comparison of Solar Photovoltaics Array Configuration Under Partial Shading Conditions, Solar Energy, Vol. 120, pp. 399-418, 2015.

10.1016/j.solener.2015.07.039

Jung, T. H., Ko, J. W., Kang, G. H., and Ahn, H. K., Output Characteristics of PV Module Considering Partially Reverse Biased Conditions, Solar Energy, Vol. 92, pp. 214-220, 2013.

10.1016/j.solener.2013.03.015

Abete, A., Barbisio, E., Cane, F., and Demartini, P., Analysis of Photovoltaic Modules with Protection Diodes in Presence of Mismatching, 21st IEEE PV Specialists Conference, pp. 1005-1010, 1990.

Alonso-Garcia, M. C., Ruiz, J. M., and Chenlo, F., Experimental Study of Mismatch and Shading Effects in the I-V Characteristic of a Photovoltaic Module, Solar Energy Material and Solar Cells, Vol. 90, pp. 329-340, 2006.

10.1016/j.solmat.2005.04.022

Silvestre, S., Boronat, A., and Chouder, A., Study of Bypass Diodes Configuration on PV Modules, Applied Energy, Vol. 86, pp. 1632-1640, 2009.

10.1016/j.apenergy.2009.01.020

Kim, S. T., Kang, G. H., Park, J. H., Ahn, H. K., YU, G. J., and Han, D. Y., The Electrical Characteristics of Shading Effect in Photovoltaic Module, Journal of the Korean Solar Energy Society, pp. 257-262, 2008.

Shin, W., Ko, S., Song, H., Ju, Y., Hwang, H., and Kang, G., Origin of Bypass Diode Fault in c-Si Photovoltaic Modules: Leakage Current under High Surrounding Temperature, Energies, Vol. 11, p. 2416, 2018

10.3390/en11092416

Shin, W. G., Jung, T. H., Ko, S. W., Ju, Y. C., Chang, H. S., and Kang, G. H., Analysis on Thermal & Electrical Characteristics Variation of PV Module with Damaged Bypass Diodes, Journal of the Korean Solar Energy Society Vol. 35, pp. 67-75, 2015.

10.7836/kses.2015.35.4.067

Jung, T. H., Kang, G. H., & Ahn, H. K., Optimal Design of PV Module with Bypass Diode to Reduce Degradation due to Reverse Excess Current, Transactions on Electrical and Electronic Materials, Vol. 15, pp. 279-283, 2014.

10.4313/TEEM.2014.15.5.279

Petrone, G. and Ramos-Paja, C. A., Modeling of Photovoltaic Fields in Mismatched Conditions for Energy Yield Evaluations, Electric Power Systems Research, Vol. 81, pp. 1003-1013, 2011.

10.1016/j.epsr.2010.12.008

Ko, S. W., Ju, Y. C., Hwang, H. M., So, J. H., Jung, Y. S., Song, H .J., Song, H. E., Kim, S. H., and Kang, G. H., Electrical and Thermal Characteristics of Photovoltaic Modules Under Partial Shading and with a Damaged Bypass Diode, Energy, Vol. 128, pp. 232-243, 2017.

10.1016/j.energy.2017.04.030

Ko, S. W., Ju, Y. C., So, J. H., Hwang, H. M., Jung, Y. S., and Kang, G. H., The Characteristics of PV Module Under the Partial Shading Condition and with a Failure of Bypass Diode with Short, Journal of the Korean Solar Energy Society, Vol. 36, No. 4, pp. 41-47, 2016.

10.7836/kses.2016.36.4.041

Information

Publisher :Korean Solar Energy Society
Publisher(Ko) :한국태양에너지학회
Journal Title :Journal of the Korean Solar Energy Society
Journal Title(Ko) :한국태양에너지학회 논문집
Volume : 39
No :6
Pages :15-25
Received Date : 2019-10-03
Revised Date : 2019-11-07
Accepted Date : 2019-11-08
DOI :https://doi.org/10.7836/kses.2019.39.6.015

Journal of the Korean Solar Energy Society ISSN:1598-6411(Print) 2508-3562(Online) 한국태양에너지학회 논문집

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