Design, fabrication, and testing of double layer printed bow-tie antenna as partial discharge sensor in gas insulated switchgear

Abstract

Partial discharge (PD) diagnostic using ultra high frequency (UHF) method has been developed recently. UHF method is the effective method in detecting electromagnetic wave emitted by PD activity in gas insulated switchgear (GIS). This paper focused on designing bow-tie antenna as UHF sensor to achieve 300 MHz bandwidth, return loss -10dB and VSWR 2. After being designed and simulated, the most optimum antenna was fabricated on a double-layer PCB with FR4-epoxy substrate. As comparison, three antennas with different flare angles were also fabricated. The antennas characteristics were measured using network analyzer. At last, the four antennas were tested in high voltage laboratory to find the most sensitive antenna in detecting PD in GIS. PD was measured in two voltage levels, 26kV and 28kV.

Modifikasi Patch Lingkaran Dan Lengan Pada Desain Ultra-Wideband Double Layer Printed Antenna Untuk Mendeteksi Partial Discharge

“…Antenna tersebut memiliki frekuensi kerja yang lebar 50 MHz -5 GHz. Desain antenna tersebut memiliki parameter yang masih dapat dilakukan perbaikan untuk memperoleh hasil yang optimum [1] - [7]; [9]; [10]. Parameter pada bagian patch antenna akan disimulasikan kembali dengan beberapa ukuran untuk melihat hasil perubahan yang akan diperoleh.…”