Methodology for overhead conductor replacement considering operational stress and aging characteristics

Wilson Vasquez , Dilan Jayaweera

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)
520 Downloads (Pure)


This paper presents a novel methodology for the prioritization of overhead conductor replacement considering operational stress and aging characteristics. The time sequential Monte Carlo technique is used to assess the reliability of a distribution network over a planning period. To incorporate the influence of high operating temperatures and aging characteristics into the reliability assessment, up-times of aging conductors are sampled using the interval-by-interval method, Arrhenius life-temperature relationship, and thermal model IEEE 738-2006. Aging conductors are ranked for replacement based on the financial losses caused by their failures throughout the planning period. The methodology was tested using the IEEE 33-bus distribution network model. Results indicate that failures of aging conductors affect significantly system reliability indices. Furthermore, it was determined that financial losses of aging conductors depend on the conductor location and network's protection scheme. The proposed methodology may help utilities improve both asset replacement plans and system reliability.
Original languageEnglish
Title of host publication2018 IEEE Power & Energy Society General Meeting (PESGM)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Electronic)9781538677032, 9781538677025
ISBN (Print)9781538677049
Publication statusPublished - 24 Dec 2018
EventIEEE PES General Meeting - USA, United States
Duration: 5 Aug 20189 Aug 2018

Publication series

NamePower& Energy Society, IEEE General Meeting
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933


ConferenceIEEE PES General Meeting
Country/TerritoryUnited States


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