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Experimental investigation of Co2 gas in the breakdown characteristics under lightning impulse

Mohamed Alhabeib, Ahmed Othman (2015) Experimental investigation of Co2 gas in the breakdown characteristics under lightning impulse. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

The purpose of the experiment conducted in this Master’s thesis is to investigate the breakdown voltage, when the pressure change in the gas CO2 from (1bar, 1.5bar, 2bar, 2.5bar, and 3bar), and electrode configurations (rod - plane, plane - plane, and sphere - sphere). The length and diameter of the rod is 5.3 cm and 1.5 cm respectively. While the measurement of plane used in the experiment is 2.5 cm thick and 5 cm diameter. And sphere is 5 diameter. The experiments have been conducted with the positive lightning impulse voltage at 0.5 cm gap distance, using the up and down method to determine the U50 breakdown voltage. And also used COMSOL software to determine the maximum electric field Emax. The results show that the breakdown voltage of the gap can be increased by the use of pressure, The increase was an increase of pressure in the breakdown voltage at a rate of (rod - plane, plane - plane, and sphere - sphere) it is 25%, 21%, 13% of initial value at 1bar respectively. And the relationship between the breakdown voltage and the maximum value of the electric field is a direct correlation.

Item Type: Thesis (Masters)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3001-3521 Distribution or transmission of electric power
Depositing User: Normajihan Abd. Rahman
Date Deposited: 29 Feb 2016 06:15
Last Modified: 29 Feb 2016 06:15
URI: http://eprints.uthm.edu.my/id/eprint/7703
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