Title :
A study on leakage current characteristics of field aged XLPE cable
Author :
Muto, H. ; Yamashita, Y. ; Maruyuma, Y. ; Iwata, Z.
Author_Institution :
Furukuwa Electric Co. Ltd., Chiba, Japan
Abstract :
The leakage current characteristic of degraded XLPE (cross-linked polyethylene) cable was investigated under DC and AC electric field. The cable with heavy vented tree degradation showed a typical increase of DC leakage current and Dc component. In this instance, the bridged vented tree plays an important role in the increase of this current. The low-frequency component of the charging current was observed in the type of cable. The DC leakage current, DC component, and low-frequency component of the charging current were found to vary in a complex manner, depending on the applied voltage and its history. This may be attributable to the change of the internal water tree structure
Keywords :
cable insulation; electric breakdown of solids; leakage currents; organic insulating materials; polymers; power cables; AC electric field; DC component; DC electric field; applied voltage; bridged vented tree; charging current; cross-linked polyethylene; field aged XLPE cable; internal water tree structure; leakage current characteristics; low-frequency component; vented tree degradation; Aging; Cable insulation; Cable shielding; Current measurement; Degradation; Frequency measurement; Leakage current; Power measurement; Trees - insulation; Voltage;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-87942-568-7
DOI :
10.1109/ICPADM.1991.172105
