Robust Padé approximation for the holomorphic embedding load flow

Alberto Jose Sarnari, Rastko Živanovic

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

4 Citations (Scopus)

Abstract

This paper proposes an application of the robust Padé approximation algorithm to make solutions of load flow problems reliable. Difference between the classical Padé approximation algorithm and the robust version based on the Singular Value Decomposition (SVD) is described. The robust approximation method is able to determine an optimal rational function approximation using the coefficients of a Taylor series expansion. As a consequence the voltage collapse point as well as the steady-state voltage stability margin can be calculated with high reliability. Voltage collapse points (i.e. branching points) are identified by using locations of poles/zeros of a rational function approximation. Numerical examples are devised to illustrate potential use of the proposed method in practical applications.

Original languageEnglish
Title of host publicationProceedings of the 2016 Australasian Universities Power Engineering Conference, AUPEC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509014057
DOIs
Publication statusPublished - 18 Nov 2016
Externally publishedYes
Event2016 Australasian Universities Power Engineering Conference, AUPEC 2016 - Brisbane, Australia
Duration: 25 Sep 201628 Sep 2016

Publication series

NameProceedings of the 2016 Australasian Universities Power Engineering Conference, AUPEC 2016

Conference

Conference2016 Australasian Universities Power Engineering Conference, AUPEC 2016
Country/TerritoryAustralia
CityBrisbane
Period25.09.201628.09.2016

Keywords

  • Holomorphic embedding load flow (HELM)
  • Padé approximants
  • Singular value decomposition (SVD)

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