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Journal of Electrical and Computer Engineering
Volume 2016, Article ID 8712960, 10 pages
Research Article

The Comprehensive Study of Electrical Faults in PV Arrays

Electrical and Computer Engineering Department, University of Kashan, Kashan, Iran

Received 30 June 2016; Accepted 27 September 2016

Academic Editor: Ephraim Suhir

Copyright © 2016 M. Sabbaghpur Arani and M. A. Hejazi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The rapid growth of the solar industry over the past several years has expanded the significance of photovoltaic (PV) systems. Fault analysis in solar photovoltaic (PV) arrays is a fundamental task to increase reliability, efficiency, and safety in PV systems and, if not detected, may not only reduce power generation and accelerated system aging but also threaten the availability of the whole system. Due to the current-limiting nature and nonlinear output characteristics of PV arrays, faults in PV arrays may not be detected. In this paper, all possible faults that happen in the PV system have been classified and six common faults (shading condition, open-circuit fault, degradation fault, line-to-line fault, bypass diode fault, and bridging fault) have been implemented in 7.5 KW PV farm. Based on the simulation results, both normal operational curves and fault curves have been compared.