Investigation of Reverse Current Phenomena in the Utility–Scale Photovoltaic Power Plant
Conference proceedings article
Authors/Editors
Strategic Research Themes
Publication Details
Author list: Usman Yahaya, Dhirayut Chenvidhya, Ballang Muenpinij, Chamnan Limsakul, Yaowanee Sangpongsanont, Tanokkorn Chenvidhya, Nattakarn Sakarapunthip, Manit Seapan
Publication year: 2026
Title of series: PVSEC-36, 2025 PROCEEDINGS The 36th International Photovoltaic Science and Engineering Conference
Number in series: -
Volume number: -
Start page: 115
End page: 116
Number of pages: 2
URL: https://www.pvsec-36.com/
Abstract
This study investigates the phenomenon of reverse current in photovoltaic (PV) strings observed at a utility-scale PV power plant that has operated for over ten years without blocking diodes. In rare cases, reverse current reached up to −30 A. The longest recorded event lasted 32 minutes. About 95% of the events lasted no more than 7 minutes, while only 1% continued for more than 15 minutes.
Keywords
Photovoltaic systems, Renewable energy (solar), Solar photovoltaic






