Optimal-design-based variable sampling rate re-sampling method
An optimized design and resampling technology, applied in electrical components, emergency protection circuit devices, etc., can solve the problem of sampling data asynchrony, and achieve the effect of low calculation amount and high calculation accuracy
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[0022] According to above design principle, design anti-mirror filter, below in conjunction with 1000kV test demonstration engineering busbar three-phase short-circuit fault fault emulation current, CT strong saturation, the situation that three kinds of high-frequency components such as transformer air-drop exciting inrush current are very high make the present invention described in further detail.
[0023] 1) According to the above design principles of L and filter, test the input sampling data of the three-phase short-circuit fault of the busbar in the 1000kV test demonstration project, the fault simulation current, the CT strong saturation, and the transformer air-drop excitation inrush current, and the total resistance band The attenuation index is set at about -60 decibels, which can control the resampling error within 0.5%. Therefore, the total stopband attenuation index is taken as -60 decibels, and the interpolation multiple L should be calculated as 250 according to...
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