NEW DESIGN AND IMPLEMENTATION OF DOUBLE LAYER BOWTIE ANTENNA WITH EDGE AND MIDDLE SLICED MODIFICATION FOR PARTIAL DISCHARGE MEASUREMENT

• Main Author: Sukri Habibi Daulay, Muhammad
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/36714
• Institution: Institut Teknologi Bandung

Partial discharge (PD) diagnosis with ultra high frequency (UHF) method has been developed with various varied geometric shapes to detect electromagnetic waves emitted on high voltage equipment due to PD activities. PD measurement using the UHF method is to measure the waves caused by the partial discharge which will propagate from the source of the PD out of the insulating material. EM wave propagation generated by PD can be detected using sensors, one of them is an antenna. In this research there are three new designs of bowtie antennas. Two of them are double layer bowtie antennas and one single layer bowtie antenna.The design of the three bowtie antennas is double layer bowtie antenna with edge modification, double layer bowtie antenna with middle slice modification and single layer bowtie antenna with edge modification. The antenna is designed with FR4_epoxy substrate which has dimensions of length and width of substrate is 160 mm and 54 mm, thickness is 1.6 mm. Antennas are designed in the frequency range of 300 MHz - 3 GHz. 3D-HFSS software is used to design antennas. The antenna that has been designed is then implemented on printed cicuit board (PCB) material and measured using a vector network analyzer (VNA) to determine the antenna parameter characteristics. Antenna characteristic parameters which include return loss (RL), bandwidth and VSWR show the corresponding results based on the simulation results and measurement results. The three antenna designs have RL values L -10dB and VSWR ? 2. Testing of bowtie antennas for detecting PD in air isolation using plate-needle electrodes. PD test results show the design of the double layer bowtie antenna with edge modification radius 25 mm and double layer bowtie antenna double layer with middle slice modification of scale 0.5 has good sensitivity in detecting PD compared to single layer bowtie antenna with edge modification radius 25 mm. In addition, the double layer bowtie antenna with edge modification radius 25 mm and bowtie antenna double layer with middle slice of scale 0.5 has a wide bandwidth value when compared to a single layer bowtie antenna with edge modification radius 25 mm.