Title :
Space charge behavior under AC voltage application in water-treed polyethylene observed by the pulsed electroacoustic method
Author :
Ohki, Yoshimichi ; Li, Ying ; Kawai, Jiro ; Ebinuma, Yasumitsu ; Fujiwara, Yasutaka
Author_Institution :
Dept. of Electr. Eng., Waseda Univ., Tokyo, Japan
Abstract :
A pulsed electroacoustic method (PEA) system with phase-resolving capability has been developed to measure space charge distribution at any phase angle of applied AC voltage in water-treed polyethylene. By comparing the observed charge distributions with theoretically predicted ones, it has been shown that the interfacial polarization due to the difference in conductivity between the treed and the untreed regions predominates the space charge behavior
Keywords :
XLPE insulation; acoustoelectric transducers; charge measurement; dielectric polarisation; insulation testing; piezoelectric transducers; space charge; trees (electrical); AC voltage application; XLPE sheets; conductivity difference; interfacial polarization; phase angle; phase-resolving capability; pulsed electroacoustic method; space charge distribution; water tree conductivity; water-treed polyethylene; Charge measurement; Conductivity; Current measurement; Phase measurement; Polarization; Polyethylene; Pulse measurements; Pulsed electroacoustic methods; Space charge; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on
Conference_Location :
Millbrae, CA
Print_ISBN :
0-7803-3580-5
DOI :
10.1109/CEIDP.1996.564602
