Title :
Space charge distribution of water tree degraded polyethylene sheets under AC application
Author :
Li, Ying ; Kawai, Jiro ; Ebinuma, Yasumitsu ; Fujiwara, Yasutaka ; Aihara, Mitsugu ; Tanaka, Yasuhiro ; Takada, Tatsuo
Author_Institution :
Showa Electr. Wire & Cable Co. Ltd., Kawasaki, Japan
Abstract :
The pulsed electroacoustic method (PEA) has been applied to measuring space charge under AC application (50, 0.1 and 0.001 Hz) in samples degraded by water trees. It has been shown that the ion polarization in the moist sample is dominated by the quick response of space charge profiles in comparison with the dry sample, in which the rate of space charge accumulation exhibited a relatively slow response
Keywords :
acoustoelectric effects; polyethylene insulation; space charge; trees (electrical); 0.001 to 50 Hz; AC application; ion polarization; moisture; polyethylene sheet; pulsed electroacoustic method; space charge distribution; water tree degradation; Charge measurement; Current measurement; Degradation; Dielectrics and electrical insulation; Electric variables measurement; Polyethylene; Pulse measurements; Space charge; Trees - insulation; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1995. Annual Report., Conference on
Conference_Location :
Virginia Beach, VA
Print_ISBN :
0-7803-2931-7
DOI :
10.1109/CEIDP.1995.483574
