作者:
韩志锟，饶曙勇，姜玉山，王世钊，刘嘉婧
关键词:
量比；行波；故障测距；时间窗；干扰
摘要:
The crux of traveling wave fault location for transmission lines is the identification and location of the wave front of fault generated traveling wave. To implement accurate fault location, a new signal processing method is utilized, i.e., from the viewpoint of traveling wave energy the fault generated traveling wave is processed by the energy ratio function obtained from time-window continuous calculation, thus the time-delay of wave front can be calculated and fault location is implemented. The influences of different time-window widths on location accuracy is researched and on this basis rational time-window is chosen for the calculation of energy ratio, meanwhile the accuracy of fault location by energy ratio under complex environmental interference is analyzed. Processing results of ATP/EMTP simulation data show that the proposed method is accurate and effective, and the calculation is simple, convenient and rapid, besides, it possesses satisfied anti-interference ability in the environment with low S/N ratio.
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