High impedance earth fault modelling

Coggan, Robert Walter (2010) High impedance earth fault modelling. [USQ Project] (Unpublished)

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Abstract

[Abstract]: Single Wire Earth Return (S.W.E.R) Distribution networks were installed by Electrical Distribution entities to distribute power to customers who are remote from Zone Substations and have a low energy demand. As is common with typical distribution systems, S.W.E.R. systems are being subjected to an array of appliances with higher energy demands than were ever anticipated. An increase in load without an increase in the available fault current highlights the benefits of non traditional fault detection techniques. Detection of faults historically relied on the use of fundamental power system signals to distinguish between normal operation and fault conditions. Recent introduction of microprocessor based protection relays allows monitoring of low level signals generated by power system faults to increase the protection coverage. The project has deconstructed a typical SWER power system and validated models for each power system component. COMTRADE files have been produced that can be replayed to protection relays attempting to detect arching and high impedance faults.


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Item Type: USQ Project
Refereed: No
Item Status: Live Archive
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Electrical, Electronic and Computer Engineering
Date Deposited: 22 Feb 2011 04:22
Last Modified: 03 Jul 2013 00:30
Uncontrolled Keywords: electricity; single wire earth return (SWER); current fault detection
Fields of Research (FOR2008): 09 Engineering > 0906 Electrical and Electronic Engineering > 090601 Circuits and Systems
URI: http://eprints.usq.edu.au/id/eprint/18416

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