Chapter

PowerFactory Applications for Power System Analysis

Part of the series Power Systems pp 85-110

Date:

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

  • Paulo M. De Oliveira-De JesusAffiliated withConversion and Energy Delivery Department, Simon Bolivar University Email author 
  • , Andres A. Rojas QAffiliated withConversion and Energy Delivery Department, Simon Bolivar University
  • , Francisco M. Gonzalez-LongattAffiliated withSchool of Electronic, Electrical and Systems Engineering, Loughborough University

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Abstract

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.

Keywords

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