A generalized computer technique for the development of the three-phase impedance matrix for unbalanced power systems

This paper presents the development of the three-phase bus impedance and bus admittance matrices for unbalanced power systems. The imbalance conditioned by large single-phase loads, untransposed feeders, bundled conductors, etc., is reflected in the polyphase impedance or admittance matrix. The meth...

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Bibliographic Details
Published inElectric power systems research Vol. 15; no. 1; pp. 41 - 50
Main Authors Makram, Elham B., Girgis, Adly A.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.08.1988
Elsevier
Subjects
Applied sciences
Disturbances. Regulation. Protection
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Power networks and lines
Unbalanced conditions
Electrical network
Algorithm
Electrical impedance
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Summary:This paper presents the development of the three-phase bus impedance and bus admittance matrices for unbalanced power systems. The imbalance conditioned by large single-phase loads, untransposed feeders, bundled conductors, etc., is reflected in the polyphase impedance or admittance matrix. The method utilizes the phase frame representation of network elements. Consequently, line removals or additions, impedance changes, conductor and phase openings can be simulated easily by modifying the bus impedance matrix. Thus, the proposed method makes it possible to analyze any type of single- or three-phase loads and unequal mutual coupling between the phases for large-scale power systems.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0378-7796
1873-2046
DOI:10.1016/0378-7796(88)90038-7