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Identification of contradictory patterns in experimental datasets for the development of models for electrical cables diagnostics

pubblicazioni - Articolo

Identification of contradictory patterns in experimental datasets for the development of models for electrical cables diagnostics

The state of health of an electrical cable may be difficult to know, without destructive or very expensive tests. To overcome this, Partial Discharge (PD) measurements have been proposed as a relatively economic and simple-to-apply experimental technique for retrieving information on the health state of an electrical cable. The retrieval is based on a relationship between PD measurements and the health state of the cable. Given the difficulties in capturing such relationship by analytical models, empirical modelling techniques based on experimental data have been propounded. In this view, a set of PD measurements have been collected by Enea Ricerca sul Sistema Elettrico-ERSE during past campaigns, for building a diagnostic system of electrical cable health state. These experimental data may contain contradictory information which remarkably reduce the performance of the state classifier, if not a priori identified and possibly corrected. In the present paper, a novel technique based on the Ad boost algorithm is proposed for identifying contradictory PD patterns within an a priori analysis aimed at improving the diagnostic performance. Ad boost is a bootstrap-inspired, ensemble-based algorithm which has been effectively used for addressing classification problems.

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