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《Proceedings of the Csee》 2002-06
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STUDY ON FAULT LOCATION FOR TRANSMISSION LINES BASED ON THE SENSOR OF TRAVELING-WAVE

ZENG Xiang-jun1, YIN Xiang-gen2, LIN Fu-chang2, LI Xiao-hua2, CHEN De-shu2 (1. Department of Electric Power, Changsha University of Electric Power, Changsha 410077, China ; 2. College of Electrical & Electronic Engineering, Huazhong University of Scie  
The voltage traveling-wave in transmission line is difficult to be accurately detected in the secondary of capacitive voltage transformer (CVT) which has bad character to transform high frequency signals. A new sensor to detect the voltage traveling-wave is designed in this paper. It can measure the current traveling-wave from CVT to ground. The incipient times of traveling-wave appearing in every station are measured and a new fault location system for the whole grid is implemented. Simulations and prototype testing show that this fault location method has high precision and can be implemented easily and cheaply.
【CateGory Index】: TM764
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