Stability of Step-Response Parameters of Standard Impulse Voltage Divider for Lightning Impulse

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  • Miyazaki Satoru
    Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry
  • Goshima Hisashi
    Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry
  • Shinkai Hiroyuki
    Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry
  • Yashima Masafumi
    Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry
  • Wakimoto Takayuki
    Faculty of Engineering, Chiba Institute of Technology
  • Ishii Masaru
    Institute of Industrial Science, The University of Tokyo

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Other Title
  • インパルス高電圧標準分圧器直角波応答パラメータの安定性
  • インパルス コウデンアツ ヒョウジュン ブンアツキ チョッカクハ オウトウ パラメータ ノ アンテイセイ

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Abstract

Long-term stability of step-response parameters of the standard voltage divider may be useful in evaluating the long-term stability of the standard measuring system for high voltage impulse, which influences the uncertainty of the system . Because dispersions of the step-response parameters have been large, they have not been considered in evaluating the uncertainty of the system. Dispersion of the experimental response time is largely due to noise superimposed on measured step-response waveforms. It can be reduced either by increasing sampling rates of the waveform or by improving the signal to noise (S/N) ratio. Dispersion of the partial response times is due to oscillations on the wavefront of step-response waveforms. Calculation of the virtual origin becomes unstable in the presence of the oscillation, resulting in the dispersion of the partial response time.

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