Efficient three-phase power-flow method for unbalanced radial distribution systems

Karar Mahmoud*, Mamdouh Abdel-Akher

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

18 Citations (Scopus)


This paper presents an efficient three-phase power flow algorithm for distribution network analysis. A new transformer model with various connections is implemented in the forward/backward sweep power flow method. The developed method provides an effective solution to the singularity problem of the nodal admittance submatrices appeared in some transformer configurations. Different load models and capacitor banks are also implemented with any number of phases and any connection. The proposed load flow has been tested using both the IEEE 4 and 34 node test feeders. The obtained results show that the proposed load flow is very efficient and the numerical solution is identical to that provided with the IEEE data.

Original languageEnglish
Title of host publicationProceedings of the 15th IEEE Mediterranean Electrotechnical Conference, MELECON 2010
Number of pages6
ISBN (Print)9781424457953
Publication statusPublished - 9 Jul 2010
MoE publication typeA4 Conference publication
EventIEEE Mediterranean Electrotechnical Conference - Valletta, Malta
Duration: 25 Apr 201028 Apr 2010
Conference number: 15

Publication series

NameIEEE Mediterranean Electrotechnical Conference
ISSN (Print)2158-8473
ISSN (Electronic)2158-8481


ConferenceIEEE Mediterranean Electrotechnical Conference
Abbreviated titleMELECON


  • Backward/forward methods
  • Distribution systems
  • Phase component
  • Radial load-flow
  • Sequence components
  • Transformer model


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