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A method to include component condition and substation reliability into distribution system reconfiguration

Lookup NU author(s): Dr Ilias Sarantakos, Dr David Greenwood, Dr Jialiang Yi, Dr Simon Blake, Professor Phil Taylor



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Component condition and substation (S/S) reliability have a material impact on the cost of customer interruptionsin electricity distribution systems (DSs). However, these factors are not usually considered withindistribution system reconfiguration (DSR) problem formulations, because of the lack of a readily availablemethodology. This paper presents such a method, making use of component condition scores which are nowmandatory for distribution system operators (DSOs) in the UK. Based on these condition scores, condition-basedfailure rate can be calculated for each component. S/S reliability is a function of component condition, S/Sconfiguration and the network upstream of the S/Ss. The reliability of the S/S then has an impact on the reliabilityindices of each load point (LP) it supplies. These factors are combined to deliver a better informedalgorithm for DSR, which is verified through its application on two DSs. The annual savings, compared to theformulation that neglects component condition and S/S reliability, can be in the order of tens of thousands ofU.S. dollars for a single DS.

Publication metadata

Author(s): Sarantakos I, Greenwood DM, Yi J, Blake SR, Taylor PC

Publication type: Article

Publication status: Published

Journal: International Journal of Electrical Power and Energy Systems

Year: 2019

Volume: 109

Pages: 122-138

Print publication date: 20/07/2019

Online publication date: 13/02/2019

Acceptance date: 28/01/2019

Date deposited: 14/02/2019

ISSN (print): 0142-0615

Publisher: Elsevier


DOI: 10.1016/j.ijepes.2019.01.040


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Funder referenceFunder name
Engineering and Physical Sciences Research Council