Title :
Combined Effects of Humidity and Frequency on the Dielectric Strength of Air for VLF Applications
Author :
Rodriguez, D. ; Gorur, R.S. ; Hansen, P.M.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
Abstract :
The paper reports the results to date from a study to investigate the effect of humidity and frequency on the breakdown of air. Experiments were conducted on Rogowski-profile uniform field gaps and non-uniform rod-plane gaps ranging from 4 to 52 mm. Results show that uniform field VLF (Very Low Frequency Radio; 10-30 kHz) breakdown voltages decrease with humidity, opposite to that observed at 60 Hz. Non-uniform field breakdown voltages at VLF are lower than those observed at 60 Hz, but have similar trends with humidity. Uniform and non-uniform field breakdown experiments have been completed at 60 Hz for validation.
Keywords :
antennas; radiowave propagation; Rogowski-profile uniform field gaps; air breakdown; air dielectric strength; frequency 10 kHz to 30 kHz; frequency 60 Hz; non-uniform rod-plane gaps; size 4 mm to 52 mm; very low frequency applications; Breakdown voltage; Corona; Dielectric breakdown; Dielectrics and electrical insulation; Electric breakdown; Electron emission; Geometry; Humidity; Insulation testing; Radio frequency; VLF; Very Low Frequency; absolute humidity; antenna; breakdown; breakdown of air; corona; flare; frequency; high voltage; humidity; radio frequency; relative humidity; sparkover;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2008. CEIDP 2008. Annual Report Conference on
Conference_Location :
Quebec, QC
Print_ISBN :
978-1-4244-2548-8
Electronic_ISBN :
978-1-4244-2549-5
DOI :
10.1109/CEIDP.2008.4772881
