Unbalanced Power Flow Analysis in Distribution Systems Using TRX Matrix: Implementation Using DIgSILENT Programming Language

  • Paulo M. De Oliveira-De Jesus
  • Andres A. Rojas Q
  • Francisco M. Gonzalez-Longatt
Part of the Power Systems book series (POWSYS)


In this chapter, a generalized model to solve multigrounded distribution networks under DIgSILENT platform taking into account current flows and voltages across neutral and ground paths is presented. The fundamental idea developed in this work is solving the 5-wire power flow problem using a unique matrix called TRX that includes all feeder characteristics related to phase, neutral, and equivalent ground paths. Proposed power flow routines are run from MATLAB engine using DIgSILENT databases. The method is suitable to be applied on unbalanced aerial and underground distribution systems with distributed generation. Proposed methodology has been successfully applied in an illustrative test system.


Backward/forward sweep Load flow Power flow Distribution system analysis DIgSILENT Programming Language MATLAB 

Supplementary material (537 kb)
Supplementary material 1 (ZIP 1848 kb)


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Paulo M. De Oliveira-De Jesus
    • 1
  • Andres A. Rojas Q
    • 1
  • Francisco M. Gonzalez-Longatt
    • 2
  1. 1.Conversion and Energy Delivery DepartmentSimon Bolivar UniversityCaracasVenezuela
  2. 2.School of Electronic, Electrical and Systems EngineeringLoughborough UniversityLoughboroughUK

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