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Fault Location for Single-Phase-To-Earth Faults Based on Transient Traveling Wave Method and Artificial Pulse Signal Injection Method

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4 Author(s)
Wang Chonglin ; Sch. of Inf. & Electr. Eng., China Univ. of Min. & Technol., Xuzhou, China ; Wang Yangyang ; Liang Rui ; Sun Gang

After researching the steady and transient characteristics of single-phase-to-earth faults in small current grounded system, systematically comparing the advantages and disadvantages of existed methods about fault line detection and location, this paper presents a method of fault location by coordinating transient traveling wave method with artificial pulse signal injection method. According to the different phase of the fault phase, a reasonable choice to use line own information or injection signal be made. According to intervals of adjacent traveling wave wavelet transform modulus maximum, propagation time between fault and measuring points can be identified, in order to achieve location. A large number of simulation results show that the method proposed can give exact location results for single-phase-to-earth faults in small current grounded system, and overcome the deficiency of only one location method be used could easily lead to an inaccurate result.

Published in:

Electrical and Control Engineering (ICECE), 2010 International Conference on

Date of Conference:

25-27 June 2010