| 摘要 |
PURPOSE: A real time power system vibration sensing apparatus using FFT(Fast Fourier Transform) is provided to prevent an accident in advance and to increase reliability of power delivery. CONSTITUTION: The real time power system vibration sensing apparatus comprises a power generator(1), a three phase power line, a two phase CT(2), a three phase PT(3), a real time power system vibration sensing unit and a power system(6). The real time power system vibration sensing unit comprises a real time measurement unit(4) including a CPU performing analysis with a recursive phasor calculation and a window-based PC(5) performing analysis with a frequency analysis algorithm including FFT.
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