Title :
The application of fiber optic distributed temperature sensor to fault detection of XLPE insulated underground cable
Author :
Zhang, Xiaohong ; Jiang, Xiongwei ; Xie, Hengkun
Author_Institution :
Xian Jiaotong Univ., China
Abstract :
If a fault occurs in an underground power cable it is necessary to find the fault point as quickly and accurately as possible. Although Murray loop method and pulse radar method have been extensively used for cable fault locating, the fault line needs to be removed from service and connected to detection equipment, which will take much time and effort. In the present paper, a new fault location method, which integrates fiber optic distributed temperature (FODT) sensor into cable, is introduced. The FODT sensor, which is applied to fault detection of XLPE insulated underground cable in resistance grounded power system, can find fault point immediately. The maximum detection distance, distance resolution and processing time for fault location are 10 km, 1 m and 30 s respectively
Keywords :
XLPE insulation; distributed sensors; fault location; fibre optic sensors; insulation testing; power cable insulation; power cable testing; temperature sensors; underground cables; XLPE insulation; fault location; fiber optic distributed temperature sensor; underground power cable; Electrical fault detection; Fault detection; Fault location; Optical fiber cables; Optical fibers; Optical pulses; Power cable insulation; Power cables; Temperature sensors; Underground power cables;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5459-1
DOI :
10.1109/ICPADM.2000.875653
