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Reduction of Residual Current in Distributed Solar Photovoltaic Systems

Over the past two decades, there has been a tremendous increase in the penetration of renewables within the global energy mix particularly for solar photovoltaic (PV) systems. Solar PV systems are renewable energy based technologies which generate electricity by harnessing energy from the sun. Although there have been several improvements in the technology itself, the presence of residual current particularly within distributed scale PV systems is a safety issue which is yet to be fully resolved. Hence, distributed PV systems currently mandate installation within confined electrical operating spaces to ensure end user safety. The Seeker for this Challenge, Dubai Electricity & Water Authority (DEWA), is looking for solutions that reduce or eliminate residual current in PV systems to allow installation without specialized protective cabinets, structures or enclosures.