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.

View at publisher

Abstract

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.

Impact and interest:

6 citations in Scopus
Search Google Scholar™
3 citations in Web of Science®

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

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

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page