Study on the Frequency Bandwidth Limits for Deconvolution of the Step Response

Zhao, Wei; Wang, Jiafu; Li, Chuansheng; Shao, Haiming

doi:10.1109/cpem.2018.8501098

Cited by 3 publications

(3 citation statements)

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“…In general, impulse response g(t) of an instrument and a mathematical process called deconvolution can be used to reverse the known effects of the instrument on the measured signal [16]. Deconvolution-based methods have been reported to correct the dynamic behavior of digitizers and large dividers used with LI voltage measurements [14], [15], [17]. Since LI is shorter in duration, it requires higher bandwidth and sampling rate, which can cause noise-related problems to the correction [17].…”

Section: B Step Response Correction For Dividermentioning

confidence: 99%

“…Deconvolution-based methods have been reported to correct the dynamic behavior of digitizers and large dividers used with LI voltage measurements [14], [15], [17]. Since LI is shorter in duration, it requires higher bandwidth and sampling rate, which can cause noise-related problems to the correction [17]. Therefore, it is very tempting to use this correction to SI measurements without the need for any additional filtering.…”

Section: B Step Response Correction For Dividermentioning

confidence: 99%

“…However, deconvolution increased the noise level slightly, which can cause additional errors on small-signal levels. Additional filtering for the signal was not used even though it might be necessary for LI measurements [17] where higher sample rate and bandwidth are applied.…”

Section: Performance After Correctionmentioning

confidence: 99%

See 2 more Smart Citations

Reference Switching Impulse Voltage Measuring System Based on Correcting the Voltage Divider Response With Software

Havunen

Hällström

2021

IEEE Trans. Instrum. Meas.

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The performance of a high-voltage switching impulse (SI) measurement system is highly dependent on the characteristics of the used voltage divider. Self-built or commercial voltage dividers do not always fulfill the requirements set for reference-level devices. Software corrections to improve the non-ideal divider response are easy to implement. This article describes the traceability and performance of the SI measurement systems of VTT MIKES up to 400 kV. Traceability is based on a calculable impulse voltage calibrator, which is used for calibration of a reference digitizer and a 10-kV divider. The 10-kV divider is then used to calibrate the 400-kV modular divider. Responses of both dividers are corrected using two different software methods. Implementation of these software methods allows state-of-the-art impulse parameter uncertainties. The most significant uncertainty component of time to peak is related to its definition and evaluation according to IEC 60060-1:2010 and IEC 61083-2:2013.

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Section: B Step Response Correction For Dividermentioning

confidence: 99%