General Methodology for Asymmetrical Fault Analysis in Linear and Symmetrical Multi-phase Power Systems

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Abstract

In this work, a general method to analyze any type of fault in a multi-phase power system is introduced. The proposed methodology is based on the superposition principle and on the decoupling produced by the transformation of symmetrical components into symmetrical and cyclic multi-phase systems. Different connections of positive, negative, and zero sequence networks are used in the traditional fault analysis using symmetrical components. In this paper, the possibility of analyzing faults using a procedure that consists of determining n boundary conditions in the phase domain, converting these to the frequency domain, and incorporating n additional conditions by means of the decoupled sequence networks, is proposed. The result is a system with 2n equations and 2n unknowns in sequence, which can finally be transformed into the phase domain. To validate the methodology, several asymmetrical faults (line-to-line short circuits, line-to-ground, etc.) in power systems are performed, the sequence networks are determined by means of the ATP-EMTP program, and the results are obtained using this program and the proposed technique are compared.

Original languageEnglish
Title of host publication2022 IEEE ANDESCON
Subtitle of host publicationTechnology and Innovation for Andean Industry, ANDESCON 2022
EditorsMariela Cerrada Lozada, Paul Sanmartiin Mendoza
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665488549
DOIs
StatePublished - 2022
Event11th IEEE Conference of the Andean Council, ANDESCON 2022 - Barranquilla, Colombia
Duration: 16 Nov 202219 Nov 2022

Publication series

Name2022 IEEE ANDESCON: Technology and Innovation for Andean Industry, ANDESCON 2022

Conference

Conference11th IEEE Conference of the Andean Council, ANDESCON 2022
Country/TerritoryColombia
CityBarranquilla
Period16/11/2219/11/22

Bibliographical note

Funding Information:
The authors wish to express their gratitude to the Universidad Politécnica Salesiana - Sede Cuenca and the Energy Research Group (GIE), for the financial support to this project.

Funding Information:
ACKNOWLEDGMENT The authors wish to express their gratitude to the Univer-sidad Politécnica Salesiana - Sede Cuenca and the Energy Research Group (GIE), for the financial support to this project.

Publisher Copyright:
© 2022 IEEE.

Keywords

  • Circuit analysis
  • Circuit faults
  • Fault currents
  • Power system faults
  • Symmetric matrices
  • Transforms

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