Fault current contribution from single-phase PV inverters

A significant increase in photovoltaic (PV) system installations is expected to come on line in the near future and as the penetration level of PV increases, the effect of PV may no longer be considered minimal. One of the most important attributions of additional PV is what effect this may have on...

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Bibliographic Details
Published in2011 37th IEEE Photovoltaic Specialists Conference pp. 001822 - 001826
Main Authors Keller, Jamie, Kroposki, B., Bravo, R., Robles, S.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2011
Subjects
Circuit faults
Density estimation robust algorithm
Fault currents
Inverters
Laboratories
Power systems
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Summary:A significant increase in photovoltaic (PV) system installations is expected to come on line in the near future and as the penetration level of PV increases, the effect of PV may no longer be considered minimal. One of the most important attributions of additional PV is what effect this may have on protection systems. Protection engineers design protection systems to safely eliminate faults from the electric power system. One of the new technologies recently introduced into the electric power system are distributed energy resources (DER). Currently, inverter-based DER contributes very little to the power balance on all but a few utility distribution systems. As DER become prevalent in the distribution system, equipment rating capability and coordination of protection systems merit a closer investigation. A collaborative research effort between the National Renewable Energy Laboratory (NREL) and Southern California Edison (SCE) involved laboratory short-circuit testing single-phase (240 VAC) residential type (between 1.5 and 7kW) inverters. This paper will reveal test results obtained from these short-circuit tests.
ISBN:9781424499663
1424499666
ISSN:0160-8371
DOI:10.1109/PVSC.2011.6186307