Title :
Effect of mist formation in vapor-mist dielectrics on partial discharge
Author :
Yajima, Shinichi ; Iijina, Nobukazu ; Sone, Mototaka ; Mitsui, Hideo
Author_Institution :
Musashi Inst. of Technol., Japan
Abstract :
The effect of mist on partial discharge in nonuniform fields was evaluated experimentally, and it was found that the mist formation increases the negative partial discharge inception voltages as well as the positive partial discharges. The partial discharge inception voltages increased as the temperature was reduced to the boiling point. This is an effect of mist formation. Mist with an ionic nucleus was formed after the discharge condition was established. The ionic mist is easily broken up by the discharge and does not group up
Keywords :
composite insulating materials; gaseous insulation; partial discharges; boiling point; discharge condition; ionic mist; ionic nucleus; mist formation effect; negative partial discharge inception voltages; nonuniform fields; partial discharge; temperature; vapor-mist dielectrics; Dielectrics; Electrodes; Equations; Partial discharge measurement; Partial discharges; Pressure measurement; Resistors; Temperature; Testing; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1990. Annual Report., Conference on
Conference_Location :
Pocono Manor, PA
DOI :
10.1109/CEIDP.1990.201361
