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Your search keyword '"Budovsky, Ilya"' showing total 48 results
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48 results on '"Budovsky, Ilya"'

2. Calibration System for High-Voltage Transformers With Multiharmonic Distorted Waveforms

Author

Jayathilaka, Imanka, Yan, Wei, Emms, Frederick S., Budovsky, Ilya F., Li, Yi, Georgakopoulos, Dimitrios, and Robinson, Duane

Abstract

Non-ideal frequency response (FR) and voltage non-linearity of high-voltage (HV) instrument transformers directly impact the accuracy of HV measurements in the presence of harmonics. Characterization of voltage instrument transformer FR is generally performed at low voltage (LV) with sinusoidal test signals. Those results may not accurately represent the response of the instrument transformer when subjected to distorted waveforms in modern power systems. This article presents a calibration system for the evaluation of harmonic measurement accuracy of single-phase instrument transformers with rated voltages up to 132/ $\surd 3$ kV using multitone test signals containing a HV fundamental component and superimposed harmonics up to 10 kHz. Such signals would represent the realistic operating conditions of HV instrument transformers. The performance of the developed system was analyzed by obtaining the voltage ratio and phase displacement of the reference capacitive voltage divider (CVD) from 50 Hz to 10 kHz at 1 kV with an expanded uncertainty of 0.07% for the voltage ratio error and 0.09 crad for the phase error. The effect of voltage linearity at harmonic frequencies and the effect of the fundamental voltage on the errors of the measurements of harmonics were also evaluated. The results prove that the system is capable of calibrating HV instrument transformers under distorted waveform conditions with an uncertainty of 0.13% for ratio and 0.15 crad for phase error at harmonic frequencies from 100 Hz to 10 kHz, and 0.02% and 0.04 crad at the fundamental power frequency of 50 Hz.

Published
2024
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9. APMP international comparison of ac-dc transfer standards at the lowest attainable level of uncertainty

Author

Budovsky, Ilya, Zainal Abidin, Yan, Aaron Y.K., Govil, Anil Kumar, Sasaki, Hitoshi, Temba, Moses, Suprianto, Bambang, Anh Son, Nguyen, Ruiz, Manuel, Leones, Sabino Paulo B. Jr., Rustagi, Vijay Kumar, LingXiang Liu, Early, Murray D., Yih-cheng Wei, Klonz, Manfred, Sung-Won Kwon, Charoensook, Ajchara, Kumtawee, Chalit, and Fujiki, Hiroyuki

Subjects
Electric current converter, Electric current regulators -- Testing, Electric current regulators -- Properties, Electric current regulators -- Design and construction, Voltage regulators -- Testing, Voltage regulators -- Properties, Voltage regulators -- Design and construction, Electric current converters -- Testing, Electric current converters -- Properties, Electric current converters -- Design and construction
Published
2005

10. Precision three-stage 1000 V/50 Hz inductive voltage divider

Author

Small, Greig W., Budovsky, Ilya F., Gibbes, A. Michael, and Fiander, John R.

Subjects
Resistor, Resistors -- Design and construction, Resistors -- Product development, Resistors -- Properties, Voltage dividers -- Design and construction, Voltage dividers -- Product development, Voltage dividers -- Properties
Published
2005

20. A high-frequency thermal power comparator

Author

Budovsky, Ilya, Gibbes, A. Michael, and Arthur, Des C.

Subjects
Comparator circuits -- Design and construction, Frequency standards -- Research, Voltage dividers -- Research
Published
1999

26. Very low frequency ac-dc transfer standard

Author

Budovsky, Ilya

Subjects
Calibration -- Research, Frequency meters -- Measurement, Frequency standards -- Research, Electric current converters -- Standards
Published
1995

30. Key international comparison of AC-DC current transfer standards CCEM-K12

Author

Budovsky, Ilya, Lipe, Thomas E., Filipski, Peter S., Laiz, Hector, Funck, Torsten, Garcocz, Martin, Espedalen, Jeanne H., Rydler, Karl-Erik, Chua. Sze Wey, Borghi, Giovanna, Wheaton, Adrian, and Telitchenko, G. P.

Subjects
Corriente continua, Metrología, Transferencia, Corriente alterna, Mediciones eléctricas
Abstract

The circulation of the travelling standards in the CIPM key comparison CCEM-K12 of AC–DC current transfer difference began in March 2005 and was completed in April 2007. The travelling standards were lost on their way from the last participant to the pilot laboratory. Since, prior to their disappearance, the travelling standards exhibited exceptional stability, the CCEM Working Group on Low-Frequency Quantities decided in June 2008 to accept the results of the comparison as valid without the final measurement by the pilot laboratory. The AC–DC transfer differences of the travelling standards have been measured at 10 mA and 5 A, and at the frequencies 10 Hz, 55 Hz, 1 kHz, 10 kHz, 20 kHz, 50 kHz and 100 kHz. The key comparison reference values were calculated as the weighted means of the results of the National Metrology Institutes (NMIs) with independent realizations of primary standards and low reported uncertainties. The degrees of equivalence relative to the key comparison reference values, as well as between pairs of NMIs, have been determined for the measurement points and show very good agreement. All but three of the calculated degrees of equivalence relative to the key comparison reference values are within the limits of the expanded uncertainties. Fil: Budovsky, Ilya. National Measurement Institute (NMIA); Australia Fil: Lipe, Thomas E. National Institute of Standards and Technology (NIST); Estados Unidos Fil: Filipski, Peter S. National Research Council Canada. Institute for National Measurement Standards (NRC-INMS); Canadá Fil: Laiz, Hector. Instituto Nacional de Tecnología Industrial (INTI); Argentina Fil: Funck, Torsten. Physikalisch-Technische Bundesanstalt (PTB); Alemania Fil: Garcocz, Martin. Bundesamt für Eich- und Vermessungswesen (BEV); Austria Fil: Espedalen, Jeanne H. Justervesenet (JV); Noruega Fil: Rydler, Karl-Erik. SP Technical Research Institute of Sweden; Suecia Fil: Chua. Sze Wey. National Metrology Centre (NMC); Singapur Fil: Borghi, Giovanna. Instituto Nacional de Metrologia, Qualidade e Tecnologia (INMetro); Brasil Fil: Wheaton, Adrian. National Physical Laboratory (NPL); Reino Unido Fil: Telitchenko, G. P. D. I. Mendeleev Institute for Metrology (VNIIM); Rusia

Published
2012

45. APMP International Comparison of AC-DC Transfer Standards at the Lowest Attainable Level of Uncertainty

Author

Budovsky, Ilya, primary, Bin Zainal Abidin, Abdul, additional, Yan, Y.k., additional, Lingxiang, Liu, additional, Rustagi, V.K., additional, Govil, A.K., additional, Klonz, Manfred, additional, Wei, Yih-cheng, additional, Early, Murray, additional, Sasaki, Hitoshi, additional, Fujiki, Hiroyuki, additional, Kumtawee, Chalit, additional, Kwon, Sung-won, additional, Son, Nguyen, additional, Suprianto, Bumbang, additional, Temba, Moses, additional, Ruiz, Manuel, additional, and B. Leones, Sabino, additional

Published
2004
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46. International Comparison of AC-DC Current Transfer Standards at Frequencies from 200 kHz to 1 MHz

Author

Budovsky, Ilya, Funck, Torsten, Garcocz, Martin, Heine, Gernot, Rydler, Karl-Erik, and Tarasso, Valter

Abstract

Abstract:This paper presents an international comparison of ac-dc current transfer measurements at 10 mA and frequencies up to 1 MHz between four national metrology institutes: NMIA (Australia), PTB (Germany), BEV (Austria) and SP (Sweden). The agreement between the participants is better than 10 μA/A at 500 kHz and 20 μA/A at 1 MHz. The paper presents the measurement results, as well as an overview of the design and characterisation of the reference standards and measurement systems used at the four laboratories to achieve this performance.

Published
2010
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47. AC Voltage Measurements to 120 V With a Josephson Arbitrary Waveform Synthesizer and an Inductive Voltage Divider.

Author

Georgakopoulos D, Budovsky I, and Benz SP

Abstract

We have developed a system to extend, by a factor of up to 1000, the voltage range over which Josephson arbitrary waveform synthesizers (JAWS) can be used in ac voltage metrology. The system is based on a precision inductive voltage divider, with a lock-in amplifier as the detector. Using a JAWS with a maximum output voltage of 250 mV (root mean square), we have made accurate voltage measurements up to 120 V at 60 Hz with expanded uncertainties ( k = 2) of no more than 1.5 μ V/V and demonstrate that the system can operate up to 1 kHz. We anticipate that our JAWS-based system will improve uncertainties in ac voltage metrology by one order of magnitude compared to techniques based on thermal voltage converters.

Published
2018
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48. Josephson Arbitrary Waveform Synthesizer as a Reference Standard for the Measurement of the Phase of Harmonics in Distorted Waveforms.

Author

Georgakopoulos D, Budovsky I, Benz SP, and Gubler G

Abstract

We have used the Josephson arbitrary waveform synthesizer (JAWS) to provide traceability for the phase of the harmonics, relative to their fundamental frequency, of a distorted waveform. For distorted waveforms with rms values from 0.154 to 0.2 V and harmonic magnitudes from 5% to 40% of the fundamental, our system can generate odd harmonics up to the 39th with best phase uncertainties from 0.001° to 0.010° ( k = 2.0), depending on the harmonic number and harmonic magnitude. We anticipate that the ability of the JAWS to generate distorted waveforms with the lowest possible uncertainty in the magnitude, and phase spectra will make it a unique tool for low-frequency spectrum analysis.

Published
2018
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