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Fold back current control and admittance protection scheme for a distribution network containing distributed generators

Dewadasa, Manjula, Ghosh, Arindam, & Ledwich, Gerard (2010) Fold back current control and admittance protection scheme for a distribution network containing distributed generators. IET Generation, Transmission & Distribution, 4(8), pp. 952-962.

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Abstract

Islanded operation, protection, reclosing and arc extinguishing are some of the challenging issues related to the connection of converter interfaced distributed generators (DGs) into a distribution network. The isolation of upstream faults in grid connected mode and fault detection in islanded mode using overcurrent devices are difficult. In the event of an arc fault, all DGs must be disconnected in order to extinguish the arc. Otherwise, they will continue to feed the fault, thus sustaining the arc. However, the system reliability can be increased by maximising the DG connectivity to the system: therefore, the system protection scheme must ensure that only the faulted segment is removed from the feeder. This is true even in the case of a radial feeder as the DG can be connected at various points along the feeder. In this paper, a new relay scheme is proposed which, along with a novel current control strategy for converter interfaced DGs, can isolate permanent and temporary arc faults. The proposed protection and control scheme can even coordinate with reclosers. The results are validated through PSCAD/EMTDC simulation and MATLAB calculations.

Impact and interest:

6 citations in Scopus
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3 citations in Web of Science®

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ID Code: 35770
Item Type: Journal Article
Keywords: Distributed generation, Fold back current control, Admittance relay protection
DOI: 10.1049/iet-gtd.2009.0614
ISSN: 1751-8687
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Circuits and Systems (090601)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Renewable Power and Energy Systems Engineering (excl. Solar Cells) (090608)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Electrical and Electronic Engineering not elsewhere classified (090699)
Divisions: Past > Schools > School of Engineering Systems
Deposited On: 23 Sep 2010 17:00
Last Modified: 01 Mar 2012 00:17

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