Title :
Changes of ac loss current and conductivity in open channel region of water treed XLPE with voltage
Author :
Kawai, Jiro ; Nakamura, Shuhei
Author_Institution :
Showa Electr. Wire & Cable Co., Ltd, Sagamihara, Japan
fDate :
6/23/1905 12:00:00 AM
Abstract :
The aim of this article is to discuss the change of conductivity of the water-filled channel region with voltage. By applying the voltage from 60 V to 2000 V, the charging current and loss current of a non-penetrated water treed XLPE sheet sample more increase with voltage than those of a non-degraded one. It has been found that the conductivity of water-filled channel region in low electric fields increases with increasing voltage from fitting observed magnitudes and phases of fundamental wave and 3rd harmonic component to calculated ones based on the model. It is found that the conductivity of water-filled channel region depends on the length of water-filled region
Keywords :
XLPE insulation; dielectric loss measurement; dielectric losses; electric current measurement; electrical conductivity measurement; trees (electrical); 3rd harmonic; 60 V to 2000 V; 60 to 2000 V; XLPE sheet; ac loss current; charging current; conductivity; loss current; voltage dependence; water-filled channel; Capacitance measurement; Compression molding; Conductivity; Electrodes; Equivalent circuits; Filling; Permittivity; Polyethylene; Voltage; Wire;
Conference_Titel :
Solid Dielectrics, 2001. ICSD '01. Proceedings of the 2001 IEEE 7th International Conference on
Conference_Location :
Eindhoven
Print_ISBN :
0-7803-6352-3
DOI :
10.1109/ICSD.2001.955662
