Abstract
The objective of this study was to design and compare the performance of geometrical shape circular loop antenna and square loop antenna towards partial discharge (PD) detection. PD is an early stage of fault occurs before major breakdown may due to electrical insulation failure, natural disaster and mis-operation. The electromagnetic (EM) signal radiated from PD event was measured and analyse over a range of frequency 300 MHz – 3 GHz. A circular and square loop antennas were modeled using CST Microwave Studio software based on the PD’s characteristics. The loop antenna parameters such as circumference, radius and end to end gap were varied accordingly to assess the effect of return loss and radiation pattern. The results revealed that the circular loop antenna had the greatest influence towards PD detection.
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