Experience with Current Transformer Calibration System Based on Rogowski Coil

Autor: Esa-Pekka Suomalainen, Jari Hällström

Publikováno v: Suomalainen, E-P & Hällström, J 2018, Experience with Current Transformer Calibration System Based on Rogowski Coil . in CPEM 2018-Conference on Precision Electromagnetic Measurements . IEEE Institute of Electrical and Electronic Engineers, Conference on Precision Electromagnetic Measurements, CPEM 2018, Paris, France, 8/07/18 . https://doi.org/10.1109/CPEM.2018.8501048

This paper discusses experience with current transformer calibration system based on the Rogowski coil. Rogowski coil has no ferromagnetic material in the core and thus the coil cannot be saturated. This means that the coil has inherently excellent l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9d9dfececdd0df1b8880b9258643751
https://doi.org/10.1109/cpem.2018.8501048

Performance of a wideband 200-kV HVDC reference divider module

Autor: Anders Bergman, W. Lucas, Matthias Schmidt, Jari Hällström, Ahmet Merev, J. Meisner, Serkan Dedeoglu, Ernest Houtzager, A. P. Elg, Esa-Pekka Suomalainen, C. Weber

Publikováno v: Hällström, J, Bergman, A, Dedeoglu, S, Elg, A-P, Houtzager, E, Lucas, W, Merev, A, Meisner, J, Schmidt, M, Suomalainen, E-P & Weber, C 2014, ' Performance of a wideband 200-kV HVDC reference divider module ', IEEE Transactions on Instrumentation and Measurement, vol. 63, no. 9, pp. 2264-2270 . https://doi.org/10.1109/TIM.2014.2304857

This paper describes the design and performance of a wideband high-voltage dc (HVDC) reference divider module. The module has a nominal voltage of 200 kV, and it has been designed so that a number of modules can be stacked to extend voltages up to 10

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https://doi.org/10.1109/TIM.2014.2304857

Bilateral international inductance comparison using traveling standards in thermoregulated enclosures

Autor: Torsten Funck, A. Satrapinski, Esa-Pekka Suomalainen, Axel Kolling, Harald Bothe

Publikováno v: Funck, T, Bothe, H, Kölling, A, Satrapinski, A & Suomalainen, E-P 2017, ' Bilateral international inductance comparison using traveling standards in thermoregulated enclosures ', IEEE Transactions on Instrumentation and Measurement, vol. 66, no. 6, 7801843, pp. 1511-1515 . https://doi.org/10.1109/TIM.2016.2634720
Funck, T, Bothe, H, Kolling, A, Satrapinski, A & Suomalainen, E-P 2016, Bilateral international inductance comparison using traveling standards in thermoregulated enclosures . in 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) ., 7540510, IEEE Institute of Electrical and Electronic Engineers, Conference on Precision Electromagnetic Measurements, CPEM 2016, Ottawa, Canada, 10/07/16 . https://doi.org/10.1109/CPEM.2016.7540510

Standards with toroidal windings are traditionally used for international comparisons of inductance. The achieved uncertainties of the comparisons are dominated by the rather high temperature coefficient of the traveling standards. Hence, thermoregul

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https://doi.org/10.1109/CPEM.2016.7540510

High AC current calibration system based on Rogowski coil

Autor: Jussi Havunen, Esa-Pekka Suomalainen, Jari Hällström

Publikováno v: Havunen, J, Suomalainen, E-P & Hällström, J 2015, High AC current calibration system based on Rogowski coil . in 2015 ISH : 19th International Symposium on High Voltage Engineering . 19th International Symposium on High Voltage Engineering, ISH 2015, Pilsen, Czech Republic, 23/08/15 .
VTT Technical Research Centre of Finland-PURE

MIKES is the national metrology institute (NMI) of Finland and one of its key tasks is to provide calibration services to both domestic and international customers. The high AC current calibration method of MIKES is based on a Rogowski coil used as a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::30ccd608bb1de7db51a3f46c85743447
https://cris.vtt.fi/en/publications/133eef04-e54e-4d73-9148-0e5a26815de0

Investigating linearity of a high voltage capacitance bridge

Autor: Esa-Pekka Suomalainen, Jari Hällström

Publikováno v: Suomalainen, E P & Hällström, J 2014, Investigating linearity of a high voltage capacitance bridge . in 29th Conference on Precision Electromagnetic Measurements (CPEM 2014) ., 6898538, IEEE Institute of Electrical and Electronic Engineers, pp. 620-621, 29th Conference on Precision Electromagnetic Measurements, CPEM 2014, Rio de Janeiro, Brazil, 24/08/14 . https://doi.org/10.1109/CPEM.2014.6898538

High voltage capacitance bridge can be calibrated at fixed ratios using traceable standard capacitors. Typical ratios to be calibrated are 10 to 1 and 100 to 1. Substitution method can be used to reduce bridge related errors and uncertainties. When a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0da2ba1f4543a6a691038fd9889b0d55
https://cris.vtt.fi/en/publications/be78e929-81e0-4084-993e-a6b8f758b6e7