VHF PD detection of 110 kV XLPE cable accessories

Author

Wang, Wei ; Wei, Bin ; Li, Chengrong ; Ding, Lijian ; Li, Changyu ; Liu, Dong

Author_Institution

Sch. of Electr. Eng., North China Electr. Power Univ., Baoding, China

fYear

2004

fDate

19-22 Sept. 2004

Firstpage

366

Lastpage

371

Abstract

Partial discharge (PD) can indicate defects in HV XLPE cable accessories. A new land of split-core PD sensor is designed that can be easy installed on-site and used safely, and has a bandwidth from 3 MHz to 60 MHz. A model of a cable accessory was made and some typical PD phenomena in this accessory were simulated, such as sliding discharge, floating discharge and cavity discharge. PD tests were made to find the features of the defects. The data from the tests were analyzed and the spectra of different types of PD were plotted using statistical parameters to reveal the feature of the different patterns of PD. The split-core PD sensor has been used on-site after sample testing in the laboratory. More than twenty cases of on-line PD detection for 110 kV XLPE cables have been obtained.

Keywords

XLPE insulation; insulation testing; partial discharge measurement; power cable insulation; power cable testing; sensors; 110 kV; 3 to 60 MHz; PD detection; PD spectra; PD test; VHF; XLPE cable accessories; cavity discharge; floating discharge; partial discharge; sliding discharge; split-core PD sensor; statistical parameters; very high frequency; Cable insulation; Cable shielding; Cables; Coils; Electromagnetic coupling; Magnetic cores; Magnetic sensors; Magnetic shielding; Partial discharges; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2004. Conference Record of the 2004 IEEE International Symposium on

ISSN

1089-084X

Print_ISBN

0-7803-8447-4

Type

conf

DOI

10.1109/ELINSL.2004.1380598

Filename

1380598