Partial discharges measurements in arrangements of insulator-covered conductor

In this paper, results from partial discharge measurements in four different arrangements of insulators and covered conductors are presented. The measurements were performed in arrangements that are commonly used in 23 kV distribution networks. The measured values are compared to determine which arrangement is the most suitable to reduce the probability of partial discharges, phenomena that can gradually destroy the insulating materials. According to the results, it is shown how the materials used in the ties and insulators can significantly affect the partial discharges levels present in these systems.