Generator coherency and area detection in large power systems

Vahidnia, Arash, Ledwich, Gerard, Palmer, Edward W., & Ghosh, Arindam (2012) Generator coherency and area detection in large power systems. IET Generation, Transmission & Distribution, 6(9), 874 -883.

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This paper provides a new general approach for defining coherent generators in power systems based on the coherency in low frequency inter-area modes. The disturbance is considered to be distributed in the network by applying random load changes which is the random walk representation of real loads instead of a single fault and coherent generators are obtained by spectrum analysis of the generators velocity variations. In order to find the coherent areas and their borders in the inter-connected networks, non-generating buses are assigned to each group of coherent generator using similar coherency detection techniques. The method is evaluated on two test systems and coherent generators and areas are obtained for different operating points to provide a more accurate grouping approach which is valid across a range of realistic operating points of the system.

Impact and interest:

26 citations in Scopus
19 citations in Web of Science®
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245 since deposited on 09 May 2013
53 in the past twelve months

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ID Code: 59799
Item Type: Journal Article
Refereed: Yes
Keywords: Inter-area oscillation, spectrum analysis, transient stability, generator coherency
DOI: 10.1049/iet-gtd.2012.0091
ISSN: 1751-8687
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Power and Energy Systems Engineering (excl. Renewable Power) (090607)
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 The Institution of Engineering and Technology
Deposited On: 09 May 2013 00:40
Last Modified: 12 Sep 2016 01:34

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