Pre-location Approach for 10kV High Resistance Cable Fault Based on Improved Bridge Method

Author

Yu-xiang, LIAO ; Kai, ZHOU ; Ya-xi, SU ; Kai, QI

Author_Institution

Jiangbei Power Supply Bur., Chongqing Electr. Power Corp., Chongqing, China

fYear

2008

fDate

9-12 Nov. 2008

Firstpage

359

Lastpage

361

Abstract

As increasing of 10 kV power cable in power system, the influence of cable fault on the power supply reliability is going up clearly. There are no method can locate the high resistance cable fault fast and accurately now. In this paper, an improved bridge method is presented through improving galvanometer sensitivity and power supply voltage after analyzing the principle of bridge method deeply. A number of high resistance cable faults have been pre-located by the improved bridge method, thus the success rate of prelocation of 10 kV high resistance cable fault is improved for our enterprise. It provides fast and exact method for power supply enterprise to find high resistance fault which is not easy to find before.

Keywords

fault diagnosis; power cables; power supplies to apparatus; power system reliability; galvanometer sensitivity; high resistance cable fault; improved bridge method; power cable; power supply reliability; power supply voltage; power system; prelocation approach; voltage 10 kV; Bridge circuits; Conductors; Electrical resistance measurement; Fault location; Length measurement; Power cables; Power measurement; Power supplies; Power system reliability; Voltage; high resistance fault; improved bridge method; power cable; pre-location;

fLanguage

English

Publisher

ieee

Conference_Titel

High Voltage Engineering and Application, 2008. ICHVE 2008. International Conference on

Conference_Location

Chongqing

Print_ISBN

978-1-4244-3823-5

Electronic_ISBN

978-1-4244-2810-6

Type

conf

DOI

10.1109/ICHVE.2008.4773947

Filename

4773947