Title :
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
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;
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
DOI :
10.1109/ICHVE.2008.4773947
