Prioritizing the restoration of network transformers using distribution system loading and reliability indices

Roupchan Hardowar, Sergio Rodriguez, Resk Ebrahem Uosef, Francisco De Leon, Dariusz Czarkowski

Research output: Contribution to journalArticle

Abstract

A method is proposed to prioritize the repair or re-placement of out-of-service transformers that feed a heavily meshed secondary grid. Priority assigned to restoration of a specific transformer is based on the risk reduction that results from this replacement. Risk is defined as the reduction in the probable number of customers out of service should the trans-former return to service. This measure of risk addresses both the possibility of network collapse following feeder failures (occasioned by load induced failure of transformers or feeders) and local customer impact on the secondary network. The prediction of risk makes extensive use of load predictions for feeder sections, network transformers, and secondary mains. A software tool has been developed implementing the equations proposed in this paper. This software gives system planners and operators the ability to quickly and economically select the next transformer to be repaired or replaced.

Original languageEnglish (US)
Article number6942261
JournalIEEE Transactions on Power Delivery
VolumePP
Issue number99
DOIs
StatePublished - 2014

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Restoration
Repair

Keywords

  • Distribution system contingency analysis
  • Line out distribution factor
  • Network reliability
  • Risk assessment

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Prioritizing the restoration of network transformers using distribution system loading and reliability indices. / Hardowar, Roupchan; Rodriguez, Sergio; Uosef, Resk Ebrahem; De Leon, Francisco; Czarkowski, Dariusz.

In: IEEE Transactions on Power Delivery, Vol. PP, No. 99, 6942261, 2014.

Research output: Contribution to journalArticle

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