Precise Amplitude and Phase Determination Using Resampling Algorithms for Calibrating Sampled Value Instruments
| Autor: | Enrico Mohns, Soeren de Rose, Yeying Chen, Michael Seckelmann |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Finite impulse response
02 engineering and technology lcsh:Chemical technology Biochemistry Discrete Fourier transform Article Analytical Chemistry Root mean square Sampling (signal processing) SV-based instrumentation Resampling 0202 electrical engineering electronic engineering information engineering Calibration lcsh:TP1-1185 Electrical and Electronic Engineering Instrumentation resampling algorithm sinc interpolation Mathematics Noise (signal processing) 020208 electrical & electronic engineering phase synchronisation Whittaker–Shannon interpolation formula Atomic and Molecular Physics and Optics SV-based calibration sampled values Algorithm |
| Zdroj: | Sensors (Basel, Switzerland) Sensors Volume 20 Issue 24 Sensors, Vol 20, Iss 7345, p 7345 (2020) |
| ISSN: | 1424-8220 |
| Popis: | Sampling-based calibration systems for calibrating &ldquo Sampled Value&rdquo (SV)-based instruments for substation automation require synchronised and time-aligned sampling processes. As the signal frequency of the power grid is always asynchronous to the standardised sampling frequencies according to IEC 61869-9, the sampled waveforms of the calibration system and of the SV-based device under test can be resampled to be synchronised and to allow better accuracy in the following measurements based on the Discrete Fourier Transform (DFT) of the resampled waveforms. The paper presents simulations and results for different resampling algorithms. A modified sinc interpolation method with a finite impulse response (FIR) is presented. The deviation of the results for the root mean square (RMS) and phase angle is in the order of 10&minus 8 V/V (or rad) for normalised frequencies of up to 20% of the sampling frequency. No practical degradation in the presence of noise and harmonics could be observed. In addition, laboratory experiments demonstrate the realization of the proposed resampling process in the future SV-based calibration systems for SV-based instrumentation. |
| Databáze: | OpenAIRE |
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