Title :
Partial discharge and oil quality monitoring using an RF antenna [2009 Myron Zucker prize winner]
Author :
Al Murawwi, Esam ; AlMazam, Karmal ; Huwair, AbdelRahim ; El-Hag, Ayman ; Qaddoumi, N.
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.
Keywords :
antennas; condition monitoring; electric generators; machine windings; partial discharges; sparks; switchgear; transformer oil; RF antenna; cables; electrical spark; electromagnetic wave; generator windings; large motor windings; microwave radiometer circuit; multipurpose radiofrequency antenna; oil quality monitoring; partial discharge; partial discharge detection; switchgears; transformer electrical insulation; transformer oil; Antennas and propagation; Cable insulation; Dielectrics and electrical insulation; Monitoring; Oil insulation; Partial discharges; Power transformer insulation; Radio frequency; Sparks;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/MIAS.2010.936131
