Performance Analysis of Double Arrester Protection Configuration of Pole Mounted Transformers using Probabilistic Risk Evaluation

Ntaoleng P. Koalane, Pitshou N. Bokoro

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

Abstract

This work applies the probabilistic failure risk evaluation of metal-oxide (MO) arresters in order to assess the performance of double arrester lightning protection configuration in lightning protection of pole-mounted transformers (PMTs). Therefore, an 11 kV distribution line is built-up and simulated in the EMTP-RV software package. Two study-cases of lightning protection analysis are observed: a PMT with single and a PMT with double arrester configuration. Simulation results show that the use of double arrester protection approach reduces failure risk of arresters by 47.86% for an exposure to lightning amplitude of 20 kA, and the annual outage rate of MO arresters shows reduction from 16.99 to 11.4, thus improving the average life expectancy of these protection units and consequently reducing the probability of PMT failure.

Original languageEnglish
Title of host publication2023 IEEE Electrical Insulation Conference, EIC 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665493413
DOIs
Publication statusPublished - 2023
Event2023 IEEE Electrical Insulation Conference, EIC 2023 - Quebec City, Canada
Duration: 18 Jun 202321 Jun 2023

Publication series

Name2023 IEEE Electrical Insulation Conference, EIC 2023

Conference

Conference2023 IEEE Electrical Insulation Conference, EIC 2023
Country/TerritoryCanada
CityQuebec City
Period18/06/2321/06/23

Keywords

  • distribution line
  • double parallel surge arresters
  • failure risk
  • Pole mounted transformers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality
  • Electronic, Optical and Magnetic Materials
  • Polymers and Plastics

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