Reliable steady state voltage stability limit estimation using Newton-Raphson-based method

Alberto Sarnari, Rastko Zivanovic, Said Al-Sarawi

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

2 Citations (Scopus)

Abstract

The paper presents the use of Newton-Raphson (N-R) method combined with the discrete Fourier transform and robust Padé approximation (NR-DFT-Padé) to obtain the saddle-node bifurcation points (voltage stability limit) and the high voltage solution branch for load buses of a power system. This is of potential great advantage to existing N-R based software users because the problem of Jacobian matrix singularity at the voltage collapse point is avoided. A comparison with both, the holomorphic embedding load flow method (HELM) and exact bus values, is presented. It shows that the NR-DFT-Padé method extrapolation has a close approach to the saddle-node bifurcation points (SNBP).

Original languageEnglish
Title of host publication2017 Australasian Universities Power Engineering Conference, AUPEC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538626474
DOIs
Publication statusPublished - 5 Feb 2018
Event2017 Australasian Universities Power Engineering Conference, AUPEC 2017 - Melbourne, Australia
Duration: 19 Nov 201722 Nov 2017

Publication series

Name2017 Australasian Universities Power Engineering Conference, AUPEC 2017
Volume2017-November

Conference

Conference2017 Australasian Universities Power Engineering Conference, AUPEC 2017
Country/TerritoryAustralia
CityMelbourne
Period19.11.201722.11.2017

Keywords

  • Discrete Fourier Transform
  • Load flow
  • Newton-Raphson
  • Saddle-node bifurcation point
  • Voltage stability limit

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