Fault Clearance and Transmission System Stability Enhancement using Unified Power Flow Controller

Okampo John Ewaoche, Nnamdi Nwulu

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

3 Citations (Scopus)

Abstract

Fault current introduces voltage and reactive power imbalances which are major problems in power systems. This study shows the ability of Unified Power Flow Controller (UPFC) to clear a single line to ground fault and improves transmission system stability. The device under review is one of the most advanced classes of Flexible Alternating Current Transmission System (FACTS) devices. A 30-bus transmission line system is modelled with MATLAB/Simulink software. Two cases were simulated to evaluate the performance of UPFC. In Case 1, the 30-bus network system is modelled and simulated without a compensating device whilst Case 2, the system is modelled with UPFC. The system models are designed to have a single line to ground fault with resistance 0.010Ω and ground resistance of 0.001Ω occurring at bus 1. The fault is expected to cause instability in the system and be cleared after 0.04s in both cases. The simulated results of the two cases were compared to determine the performance of UPFC in improving the voltage stability and power profile of the system. The results show that UPFC has the ability of stabilizing voltage and power profile of transmission system. The study has thus, increased insight on the use of the device in transmission system stability and control.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018
EditorsS. K. Niranjan, Veena Desai, Vijay S. Rajpurohit, M N Nadkatti
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages86-91
Number of pages6
ISBN (Electronic)9781538677094
DOIs
Publication statusPublished - Dec 2018
Event1st International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018 - Belagavi, India
Duration: 21 Dec 201823 Dec 2018

Publication series

NameProceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018

Conference

Conference1st International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018
Country/TerritoryIndia
CityBelagavi
Period21/12/1823/12/18

Keywords

  • Compensator/Controller
  • FACTS
  • MATLAB
  • Simulink
  • UPFC

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Energy Engineering and Power Technology
  • Communication
  • Computational Mechanics
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Optimization

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