Partial Discharge Phenomena Due to Electrical Treeing in XLPE

Author

Yang, J.J. ; Zhang, D.M.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ.

fYear

2006

fDate

24-26 May 2006

Firstpage

1

Lastpage

6

Abstract

Increased electrical stress due to cable joints was simulated by point-plane electrode configuration. Electrical tree formed in XLPE insulation sliced from 220 kV rated cable was diagnosed by partial discharge and dielectrometry measurements and optical observation. With increasing voltage at the rate of 1 kV/10 min, various analyses for PD pulses distribution in 20 ms and single pulses were carried out to compare the effects of applied voltage. Two types of electrical trees have been found out based on PD analysis and optical recording. Observed light emission supported the theory of emission by protons due to high-energy electrons. The analysis was supported with dielectrometry measurements on the sample before and after tree formation. And also, typical models were developed to study the mechanism of treeing

Keywords

XLPE insulation; dielectric measurement; electrodes; partial discharges; power cable insulation; recording; trees (electrical); 20 ms; 220 kV; PD pulses distribution; XLPE insulation; cable joints; dielectrometry measurements; electrical stress; electrical treeing; high-energy electrons; light emission; optical observation; optical recording; partial discharge; point-plane electrode configuration; Cable insulation; Dielectrics and electrical insulation; Electrodes; Optical pulses; Partial discharges; Power cable insulation; Power cables; Stress; Trees - insulation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2006 1ST IEEE Conference on

Conference_Location

Singapore

Print_ISBN

0-7803-9513-1

Electronic_ISBN

0-7803-9514-X

Type

conf

DOI

10.1109/ICIEA.2006.257228

Filename

4026022