Fault analysis on distribution feeders with distributed generators

This paper shows that the current an inverter interfaced distributed generator (IIDG) contributes to a fault varies considerably, due mainly to fast response of its controller. This paper proposes a method to extend the conventional fault analysis methods so that IIDG contribution can be estimated i...

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Bibliographic Details
Published in:IEEE transactions on power systems 2005-11, Vol.20 (4), p.1757-1764
Main Authors: Baran, M.E., El-Markaby, I.
Format: Article
Language:English
Subjects:
Balancing
Devices
Distributed generation
distribution system
Estimates
fault analysis
Fault currents
Faults
Feeders
Fuses
Generators
Inverters
Power generation
Power system transients
Protection
Protective
Steady-state
Substations
Testing
Thermal stresses
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Description
Summary:This paper shows that the current an inverter interfaced distributed generator (IIDG) contributes to a fault varies considerably, due mainly to fast response of its controller. This paper proposes a method to extend the conventional fault analysis methods so that IIDG contribution can be estimated in the fault analysis. The proposed method gives rms profiles of the fault currents of interest (IIDG contribution and the fault currents the protective device will see). Test results, based on a prototype feeder, show that the proposed approach can estimate the fault current's contributions under both balanced and unbalanced fault conditions.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2005.857940