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2020 Vol.40, Issue 6

Research Article

Analysis of the Impact of Power Loss by Snail Trail Degradation in Solar Power Plant

태양광 발전소의 Snail trail 열화 현상과 출력 손실의 영향성 분석

Wonwook Oh1*
,
Daesung Kim2
,
Seonggeun Jeon3
,
Ayoung Yoon4
,
Namseung Kim 5
,
Sangsoo Kim6
,
Kun Won Seo7
,
hoonjoo Choi8
오 원욱1*
,
김 대성2
,
전 성근3
,
윤 아영4
,
김 남승5
,
김 상수6
,
서 근원7
,
최 훈주8
1R&D Director, STECO Corporation
2Senior Research, STECO Corporation
3Assistant Research, STECO Corporation
4Research, STECO Corporation
5Manager, STECO Corporation
6General Manager, STECO Corporation
7Vice President, STECO Corporation
8CEO, STECO Corporation, Ph.D. Candidate, Department of Electrical Engineering, Konkuk University
1(주)에스테코 연구소장
2(주)에스테코 선임연구원
3(주)에스테코 주임연구원
4(주)에스테코 연구원
5(주)에스테코 과장
6(주)에스테코 부장
7(주)에스테코 부사장
8(주)에스테코 대표이사, 건국대학교 전기공학과 박사과정
*Corresponding Author
30 December 2020. pp. 1-7
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Abstract

The snail trail is a common degradation phenomenon that is observed in solar power plants. Although the occurrence of cosmetic problems has been reported in previous studies, the contribution of these problems to the actual power loss is negligible. However, the cracking of the solar cell induces a loss in the output. We analyzed the results of the thorough investigation of a 95 kWp solar power plant that was operated in the field for 5 years. The snail trail phenomenon was observed in a specific module using current-voltage measurement, electroluminescence analysis, and visual inspection. We evaluated the impact of the loss in the generated power via image extraction.

Keywords
Snail trail
PV module
Degradation
Power loss
Electroluminescence
키워드
달팽이 흔적
태양광 모듈
열화
발전량 손실
전계발광
References
1
Richter, S., Werner, M., Swatek, S., and Hagendorf, C., Understanding the Snail Trail Effect in Silicon Solar Modules on Microstructural Scale, In 27th European Photovoltaic Solar Energy Conference and Exhibition, Frankfurt, pp. 3439-3441, 2012.
2
Meyer, S., Richter, S., Timmel, S., Gläser, M., Werner, M., Swatek, S., and Hagendorf, C., Snail Trails: Root Cause Analysis and Test Procedures, Energy Procedia, Vol. 38, pp. 498-505, 2013. 10.1016/j.egypro.2013.07.309
3
Meyer, S., Timmel, S., Richter, S., Werner, M., Gläser, M., Swatek, S., and Hagendorf, C., Silver Nanoparticles Cause Snail Trails in Photovoltaic Modules, Solar Energy Materials and Solar Cells, Vol. 121, pp. 171-175, 2014. 10.1016/j.solmat.2013.11.013
4
Dolara, A., Leva, S., Manzolini, G., and Ogliari, E., Investigation on Performance Decay on Photovoltaic Modules: Snail Trails and Cell Microcracks, IEEE Journal of Photovoltaics, Vol. 4, No. 5, pp. 1204-1211, 2014. 10.1109/JPHOTOV.2014.2330495
5
Duerr, I., Bierbaum, J., Metzger, J., Richter, J., and Philipp, D., Silver Grid finger Corrosion on Snail Track Affected PV Modules-Investigation on Degradation Products and Mechanisms, Energy Procedia, Vol. 98, pp. 74-85, 2016. 10.1016/j.egypro.2016.10.083
6
MBJ Service, MBJ PV-Module Judgment Criteria, Vol.3.1, MBJ Services GmbH, Hamburg, Germany, 2014.
7
Bedrich, K. G., Luo, W., Pravettoni, M., Chen, D., Chen, Y., Wang, Z., and Wang, Y., Quantitative Electroluminescence Imaging Analysis for Performance Estimation of PID-influenced PV Modules, IEEE Journal of Photovoltaics, Vol. 8, No. 5, pp. 1281-1288, 2018. 10.1109/JPHOTOV.2018.2846665
Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 40
  • No :6
  • Pages :1-7
  • Received Date : 2020-09-23
  • Accepted Date : 2020-11-03
  • DOI :https://doi.org/10.7836/kses.2020.40.6.001
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