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Islanded operation of UK radial distribution: Earthing strategy

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2 Author(s)
Mohamad, H. ; Univ. of Manchester, Manchester, UK ; Crossley, P.A.

Earthing has been identified as one of the main issues pertaining to an intentional islanding. The issue is significance for any rotating type of DG operating in Networks a distribution networks. The problem arises for a system adopting single point earthing when a DG is disconnected from the grid and continues to supply power to an islanded system that does not contain an earth connection. Therefore, this paper describes a study that considers the earthing arrangement for a single point, low impedance earthed distribution network with a particular emphasis on the earthing requirements when a section of the network is operating islanded. The study is evaluated on a simulated network constructed using the PSCAD/EMTDC simulator. The study showed that an appropriate operating procedure for islanded operation is required to ensure continuity of the earth connection in the islanded system.

Published in:

Universities Power Engineering Conference (UPEC), 2009 Proceedings of the 44th International

Date of Conference:

1-4 Sept. 2009