Title :
Effect of resonance of a water droplet located on a hydrophobic sheet on AC flashover
Author :
Higashiyama, Yoshio ; Yamada, Toshiyuki ; Sugimoto, Toshiyuki
Author_Institution :
Dept. of Electr. Eng., Yamagata Univ., Yonezawa, Japan
Abstract :
A water droplet on the hydrophobic sheet subjected by a tangential AC electric field manifests resonant vibration at a definite frequency for a given volume of the water droplet. The effect of resonance vibration on flashover via a water droplet was investigated experimentally, using two kinds of hydrophobic materials, silicone rubber (SR) and PTFE sheet. AC flashover voltage with resonance frequency via a 30 /spl mu/l water droplet was much lower than that with a frequency of 50 Hz. This is due to the extension of the water droplet The decrease of the flashover voltage depends on the kind of materials. Since a water droplet on the PTFE sheet tends to slide more easily than that on the SR sheet, the flashover voltage via the water droplet on the PTFE sheet is much lower than that on the SR sheet.
Keywords :
drops; electric fields; flashover; polymers; resonance; silicone rubber; water; AC flashover; PTFE sheet; hydrophobic sheet; resonance effect; resonance vibration effect; resonant vibration; silicone rubber; tangential AC electric field; water droplet; Corona; Electric fields; Flashover; Frequency; Resonance; Sheet materials; Strontium; Surface contamination; Surface discharges; Voltage;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1043837
