The Reliability and Maintainability Analysis of Transmission Transformers in South Africa

Phaladi P. Molebe, Bheki S. Makhanya, Jan Harm C. Pretorius

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

1 Citation (Scopus)

Abstract

The power utilities have the challenging task of supplying electricity and meeting stakeholders expectations with constrained resources. Like other power utilities, Eskom has a mandate of generating and distributing electricity in a safe, reliable and cost-effective ways. The success and failure of the South African power utility are depended on the capabilities of the transformers and the maintenance strategies adopted to support the systems. This paper presents the finding of the reliability and maintainability analysis of the transmission transformers in Eskom from the period of 2014 to 2016. The study used statistical methods to analyse secondary data from Eskom operational records and reports. During the period of analysis, Eskom experienced twenty-nine failures related to transmission transformers. The study shows that Eskom was operating with the ageing transmission transformers, the protection system and bushings came out as dominating causes for malfunctions. It is recommended that Eskom change the maintenance strategy and focus on replacing the high failing component or systems to improve reliability.

Original languageEnglish
Title of host publicationProceedings - 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538651858
DOIs
Publication statusPublished - 16 Oct 2018
Event2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018 - Palermo, Italy
Duration: 12 Jun 201815 Jun 2018

Publication series

NameProceedings - 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018

Conference

Conference2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018
Country/TerritoryItaly
CityPalermo
Period12/06/1815/06/18

Keywords

  • Eskom
  • Reliability
  • Transformer

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Environmental Engineering
  • Hardware and Architecture

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