Title :
Behaviors of space charge in polyethylene sheet with water tree
Author :
Li, Ying ; Kawai, Jiro ; Ebinuma, Yasumitsu ; Fujiwara, Yasutaka
Author_Institution :
Showa Electr. Wire & Cable Co. Ltd., Kawasaki, Japan
Abstract :
The pulsed electroacoustic method has been successfully applied to measuring space charge under AC application in polyethylene 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. Further effort is required to complete the study on space charge phenomena under AC application not only in laboratory-aged sheet samples but also in field-aged power cables used in real power transmission systems
Keywords :
polyethylene insulation; space charge; trees (electrical); AC voltage; electrical stress; hydrophobic polymeric insulator; ion polarization; moisture; polyethylene sheet; pulsed electroacoustic method; space charge; water tree; Charge measurement; Current measurement; Degradation; Laboratories; Polarization; Polyethylene; Pulse measurements; Pulsed electroacoustic methods; Space charge; Trees - insulation;
Conference_Titel :
Electrical Insulating Materials, 1995. International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
4-88686-047-8
DOI :
10.1109/ISEIM.1995.496530
