Research of the electrical trees growth and PD in HV XLPE cable

Author

Wei Wang ; Heng Sui ; Yan Long Yu ; Yan Kun Wu ; Guang Hui Chen

Author_Institution

Beijing Key Lab. of High Voltage & EMC, North China Electr. Power Univ., Beijing, China

fYear

2011

fDate

16-19 Oct. 2011

Firstpage

579

Lastpage

582

Abstract

Online observing the growth of electrical trees in 10kV and 35kV XLPE cable section and monitoring its PD characteristics have been conducted. With operation phase voltages, the electrical trees were branch like trees. With same voltage, the time electrical trees grew in XLPE insulation was same, but the breakdown time of semi-conductive layer had big difference results and had large dispersion. When single tree reached semi-conductive layer, the cable was not breakdown and the voltage would last a period of time. As the growth of electrical trees, PD did not last all the time. There was weakened stage of PD in 10kV and 35kV XLPE cable. The peak of intensity of PD appeared before electrical tree reached semi-conductive layer.

Keywords

XLPE insulation; power cable insulation; HV XLPE cable section; PD characteristics; XLPE insulation; electrical tree growth; electrical tree reached semiconductive layer; semiconductive layer breakdown time; voltage 10 kV; voltage 35 kV; Partial discharges; Power cable insulation; Power cables; Vegetation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2011 Annual Report Conference on

Conference_Location

Cancun

ISSN

0084-9162

Print_ISBN

978-1-4577-0985-2

Type

conf

DOI

10.1109/CEIDP.2011.6232723

Filename

6232723