Classificação das condições de degradação de isoladores poliméricos pelos níveis de radiação UV e a lógica Fuzzy.

Abstract

The objective of this work is to propose a polymeric insulators classification technique to enable an indication of their state of degradation in operation, in order to determine the most appropriate time to carry out interventions (exchanges) and thus contribute to contribute to the reduction of interruptions. The technique relies on analysis of ultraviolet (UV) radiation emitted by insulators tested. Polymeric insulators of 230 kV were used with different levels of degradation as test objects. UV images obtained during test were subjected to an image processing technique so as to minimize existing noise. Based on these results, it proposed a fuzzy logic system for classifying the state of degradation of polymeric insulators from UV radiation measurement and the relative humidity. The technique has shown considerable promise in helping to make decisions about the need for intervention or not in inspected equipment.