“20th PSCC 2018 papers submission and review platform

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Analysis of Lightning Surge Effects on Small-scale Rooftop Photovoltaic Systems

Small-scale rooftop PV systems have become an attractive investment for small businesses and home owners. PV systems are inherently exposed to lightning phenomena and hence protection of the electrical system is required. In this paper, a simulation approach using MATLAB and Simulink is adopted to analyse the impacts of lightning induced effects on small-scale, rooftop, grid-connected PV systems. It is found that based on different coupling points, lightning surges could cause damage to the PV array, inverter as well as the connected load. The installation of surge protective devices could mitigate the potential damaging effects. In analysing the surge effects on the PV system, an understanding of the associated risk of damage to the PV system can be developed and hence the requirements for lightning protection of small-scale rooftop grid-connected PV systems can be comprehended.

Author(s):

Ishan Holland    
University of Johannesburg
South Africa

Wesley Doorsamy    
University of Johannesburg
South Africa

Ken Nixon    
University of the Witwatersrand
South Africa

 

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