Observability analysis of electric networks considering branch impedance

Arefi, Ali, Haghifam, Mahmood Reza, & Fathi, Seyed Hamid (2011) Observability analysis of electric networks considering branch impedance. International Journal of Electrical Power & Energy Systems, 33(4), pp. 954-960.

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This paper presents an analytical method to analyze the effect of X to R ratio as well as impedance value of branches on observability of a network based on un-decoupled formulation of state estimation (SE) and null space of matrices. The results showed that the X to R ratio of branches had no effect on the observability of networks. In addition, it was shown that observability of some networks was affected by impedance values while some others were not affected. In addition, for branch observability analysis of radial network, a simple and quick method is developed. Illustrative examples of the network under transmission and distribution voltages demonstrate the effectiveness of the proposed methods.

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6 citations in Scopus
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3 citations in Web of Science®

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ID Code: 68709
Item Type: Journal Article
Refereed: Yes
Keywords: Branch impedance value, Null space, Observability analysis, State estimation, X to R ratio
DOI: 10.1016/j.ijepes.2011.01.006
ISSN: 0142-0615
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 19 Mar 2014 00:19
Last Modified: 04 Dec 2015 02:34

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