Application of Charge-Sensitive Preamplifier for the Calibration of Partial Discharge Calibrators Below 1 pC

Jussi Havunen; Jari Hällström

doi:10.1109/TIM.2019.2895437

Application of Charge-Sensitive Preamplifier for the Calibration of Partial Discharge Calibrators Below 1 pC

Jussi Havunen
, Jari Hällström

Research output: Contribution to journal › Article › Scientific › peer-review

10 Citations (Scopus)

Abstract

Modern partial discharge (PD) calibrators often have their lowest range below 1 pC. However, traceable calibration services below 1-pC charges are not widely available, or their uncertainties are relatively high because of low signal levels. We have applied a commercial charge-sensitive preamplifier for the low-level calibration of PD calibrators. This calibration method both improves the signal-to-noise ratio and performs the analog integration of the PD pulse. The drooping response of the preamplifier is corrected using software. Comparison with a reference PD calibrator supports an expanded uncertainty less than 1% down to 0.1 pC and 3% for 0.01 pC.

Original language	English
Article number	8640062
Pages (from-to)	2034-2040
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	68
Issue number	6
DOIs	https://doi.org/10.1109/TIM.2019.2895437
Publication status	Published - Jun 2019
MoE publication type	A1 Journal article-refereed

Funding

This project has received funding from the EMPIR programme co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme.

Keywords

Calibration
measurement
measurement techniques
measurement uncertainty
partial discharges (PD)

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10.1109/TIM.2019.2895437

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abstract = "Modern partial discharge (PD) calibrators often have their lowest range below 1 pC. However, traceable calibration services below 1-pC charges are not widely available, or their uncertainties are relatively high because of low signal levels. We have applied a commercial charge-sensitive preamplifier for the low-level calibration of PD calibrators. This calibration method both improves the signal-to-noise ratio and performs the analog integration of the PD pulse. The drooping response of the preamplifier is corrected using software. Comparison with a reference PD calibrator supports an expanded uncertainty less than 1\% down to 0.1 pC and 3\% for 0.01 pC.",

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KW - Calibration

KW - measurement

KW - measurement techniques

KW - measurement uncertainty

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Application of Charge-Sensitive Preamplifier for the Calibration of Partial Discharge Calibrators Below 1 pC

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