Survival function of a power transformer and a switch by means of non-parametric estimators

Pablo Aparicio Ruiz

Spain

Universidad de Sevilla

Maria Rodríguez Palero

Spain

Universidad de Sevilla

Luis Onieva Giménez

Spain

Universidad de Sevilla

Submitted: 2013-05-16

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Accepted: 2013-05-31

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Published: 2013-07-01

DOI: https://doi.org/10.4995/ijpme.2013.1517
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Keywords:

Survival function, non-parametric estimators, transformer.

Supporting agencies:

This research was not funded

Abstract:

The aim of this work is the estimation of the survival function of a power transformer and a switch for a medium voltage substation, which provides the empirical reliability of this transformer and its switch. The statistical analyses of recurrent events are used for this estimate. In this study, have been applied several estimators: in the presence of correlation, under a model of maximum likelihood and assuming a gamma frailty model. This work is part of a project applying various techniques of maintenance. These techniques are based on the reliability of the electrical substations belonging to future Smart Grid.
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References:

Böhmer, P. E. (1912). Theorie de unabhängigen Wahrscheinlichkeiten, Rapports, Mémoires et Procès Verbaux du Septième Congrès International d'Actuaires.

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González, J. R., & Pe-a, E. A. (2004). Estimación no paramétrica de la función de supervivencia para datos con eventos recurrentes. Revista Espa-ola de Salud Pública, 78(2), 189-199. http://dx.doi.org/10.1590/S1135-57272004000200006

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