Research on partial discharge mechanism and characteristics for 10kV cable joint with air gap defect

Author

Zhengguo Zhu ; Chao Huang ; Ying Yu ; Ming Zhang ; Yanjia Qin

Author_Institution

ShenZhen Power Supply Co.. Ltd., SE Technol. Co., Ltd., Shenzhen, China

fYear

2014

fDate

23-26 Sept. 2014

Firstpage

1246

Lastpage

1250

Abstract

In the course of the running of the cable, insulation defect which produced in the manufacture or installation of power cable joint easily causes partial discharge(PD). The cumulative effect of PD is one of the main causes of cable fault. According to the common insulation defect in 10kV cable joint, we studied on the mechanism of PD and the PD characteristics. We clarified the mechanism of PD from the point of the change of electric field strength caused by insulation defect through simulating. We studied on the characteristics of PD through manual simulation of cable insulation defect PD test in laboratory. The study has certainly guiding the preparation, installation, structural optimization and operation management of cable joints.

Keywords

air gaps; cable jointing; electric fields; electrical faults; optimisation; partial discharges; power cable insulation; PD cumulative effect; air gap defect; cable insulation defect; electric field strength; operation management; partial discharge mechanism; power cable fault; power cable joint installation; structural optimization; voltage 10 kV; Abstracts; Cable insulation; Cable shielding; Discharges (electric); Partial discharges; Power supplies; PD characteristics; PD mechanism; air gap defect; cable joint; man-made PD; simulation analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electricity Distribution (CICED), 2014 China International Conference on

Conference_Location

Shenzhen

Type

conf

DOI

10.1109/CICED.2014.6991906

Filename

6991906