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Data Sampling System with High Speed and High Timing Synchronization Precision for Power Line Fault Position Detection based on Dual Ports Traveling Wave Distance Measurement Method

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5 Author(s)
Zhang Donglai ; Shenzhen Graduate Sch., Harbin Inst. of Technol., Shenzhen ; Zhang Dongsheng ; Zhang Jian ; Wang Chao
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This paper presents a scheme of data sampling based on DSP and FPGA. We use very high stable oscillator and FPGA to divide the interval between the neighboring second pulses and get the more precision synchronization pulse. This method can also use for the status of GPS signal disappearance. The test result indicates that it can keep 1 muS precision during tow hours in the condition without GPS signal. For the wave head location, a good result has be gotten using maximum SNR filtering method. The method can be used for many other signals processing, especially, for the condition that the useful signal is well known and the SNR is ultra-low

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Transmission and Distribution Conference and Exhibition: Asia and Pacific, 2005 IEEE/PES

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