Abstract

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. The objective of this work is to design and use a multipurpose radiofrequency (RF) antenna that can detect the PD in transformer's oil and monitor the oil's quality. Upon the occurrence of a PD, an electromagnetic wave is generated. This wave travels in different directions and propagates through the transformer's oil. Additionally, the same antenna can be connected to a simple microwave radiometer circuit to evaluate the oil quality.

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