Partial discharge and oil quality monitoring using an RF antenna [2009 Myron Zucker prize winner]

Partial discharge (PD) is a small electrical spark that occurs within the electrical insulation of transformers, switchgears, cables, and windings in large motors and generators. To increase the life span of the high-voltage equipment, it is necessary to know the condition of the used components [1]. Frequent occurrences of PD can lead to the deterioration of the electrical insulation and finally failure of the power system apparatus. Therefore, it is very important to detect PD at an early stage and take the necessary actions. For this reason, different techniques have been adapted to detect PD before a major failure.