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Research Output 2007 2019

  • 24 Conference article in proceedings
  • 8 Article
  • 2 Report
  • 1 Review Article
2019

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

Havunen, J. & Hällström, J., 1 Jun 2019, In : IEEE Transactions on Instrumentation and Measurement. 68, 6, p. 2034-2040 7 p., 8640062.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
preamplifiers
Partial discharges
Calibration
Signal to noise ratio
signal to noise ratios
1 Citation (Scopus)

Current Step Generation and Measurement with Nanosecond Rise Time using Coaxial Cable Generator

Rehman, M. Z., Hallstrom, J. & Havunen, J., 14 Feb 2019, 2018 IEEE International Conference on High Voltage Engineering and Application: ICHVE 2018. Institute of Electrical and Electronic Engineers IEEE, 8642188. (ICHVE 2018 - 2018 IEEE International Conference on High Voltage Engineering and Application).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Coaxial cables
Electric sparks
Sensors
Calibration
Geometry

Intercomparison of reference measuring systems for lightning impulses between three National Metrology Institutes

Meisner, J., Elg, A. P., Hallstrom, J., Passon, S., Havunen, J., Bergman, A. & Nordlund, M., 14 Feb 2019, 2018 IEEE International Conference on High Voltage Engineering and Application: ICHVE 2018. Institute of Electrical and Electronic Engineers IEEE, 8642002. (ICHVE 2018 - 2018 IEEE International Conference on High Voltage Engineering and Application).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Lightning
Electric potential
Uncertainty

Precision Calibration System for Partial Discharge Calibrators

Havunen, J. & Hällström, J., 8 Aug 2019, Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19. p. 6-9 (Proceedings of the Nordic Insulation Symposium, Vol. 26).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access
Partial discharges
Calibration
Uncertainty
2018
2 Citations (Scopus)

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

Havunen, J. & Hällström, J., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. Institute of Electrical and Electronic Engineers IEEE, 2 p. 643

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

calibration
software
services
method

Effect of Coaxial Cables on Measurements Performed with Resistive Lightning Impulse Voltage Dividers

Havunen, J., Passon, S., Hällström, J. & Bergman, A., 19 Oct 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. Institute of Electrical and Electronic Engineers IEEE, 2 p. 8501140

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Voltage dividers
Coaxial cables
Lightning
Electric potential
Cables

Experience with Current Transformer Calibration System Based on Rogowski Coil

Suomalainen, E-P. & Hällström, J., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. Institute of Electrical and Electronic Engineers IEEE, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Electric instrument transformers
transformers
coils
Calibration
Ferromagnetic materials

Results of an International Comparison of Instrument Current Transformers up to 10 kA at 50 Hz Frequency

Draxler, K., Styblíková, R., Hlavacek, J., Rietveld, G., van den Brom, H. E., Schnaitt, M., Waldmann, W., Dimitrov, E., Cincar-Vujovic, T., Paczek, B., Sadkowski, G., Crotti, G., Martin, R., Garnacho, F., Blanc, I., Kämpfer, R., Mester, C., Wheaton, A., Mohns, E., Bergman, A. & 4 others, Hammarquist, M., Çayci, H., Hällström, J. & Suomalainen, E-P., 2018, CPEM 2018 - Conference on Precision Electromagnetic Measurements. Institute of Electrical and Electronic Engineers IEEE, 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

transformers
revenue
electric power
metrology
alternating current
2017

Charcterization of a Fast Step Generator

Bergman, A., Nordlund, M., Elg, A-P., Meisner, J., Passon, S., Hällström, J. & Lehtonen, T., 2017, Proceedings.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Design and performance of a fast divider for puncture testing

Hällström, J., Kazmi, S., Havunen, J. & Pykälä, M-L., 2017, Proceedings.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Design of a Metrology Grade Fibre Optical Current Sensor

Elg, A-P., Lindgren, M., Hedekvist, P. O., Ebenhag, S-C., Hällström, J., Istrate, D., Kiiveri, P., Niewczas, P. & Fusiek, G., 2017, 2017 ISH: 20th International Symposium on High Voltage Engineering. Díaz, R. R., Assaf, L. O., Silva, J. & Rizzotti, B. (eds.).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Development and calibration of an HV Impulse Reference Divider

Cherbaucich, C., Gentili, M., Hällström, J., Havunen, J., Mazza, P., Orrea, A., Rizzi, G. & Sardi, A., 2017, 2017 ISH: 20th International Symposium on High Voltage Engineering.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Calibration
Step response
Testing
Electric potential
Deconvolution

Evaluation of Step Response of Transient Recorders for Lightning Impulse

Bergman, A., Elg, A-P. & Hällström, J., 2017, Proceedings.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Influence of Coaxial Cable on Response of High-Voltage Resistive Divider

Bergman, A., Nordlund, M., Elg, A-P., Havunen, J., Hällström, J. & Meisner, J., 2017, Proceedings.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Measurement of the Internal Inductance of Impulse Voltage Generators and the Limits of LI Front Times

Larzelere, W., Hällström, J., Elg, A-P., Bergman, A., Klüss, J., Li, Y. & Zhou, L., 2017, Proceedings. 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access
Inductance
Electric potential
Networks (circuits)
Impulse testing
Capacitance
2 Citations (Scopus)

Metrology in electricity and magnetism: EURAMET activities today and tomorrow

Piquemal, F., Jeckelmann, B., Callegaro, L., Hällström, J., Janssen, T. J. B. M., Melcher, J., Rietveld, G., Siegner, U., Wright, P. & Zeier, M., 4 Aug 2017, In : Metrologia. 54, 5, p. R1-R24

Research output: Contribution to journalReview ArticleScientificpeer-review

Open Access
Magnetism
Electricity
Metric system
Nanotechnology
Graphene
3 Citations (Scopus)

Optical voltage sensor for MV networks

Fusiek, G., Nelson, J., Niewczas, P., Havunen, J., Suomalainen, E. P. & Hallstrom, J., 21 Dec 2017, IEEE SENSORS 2017 - Conference Proceedings. Institute of Electrical and Electronic Engineers IEEE, Vol. 2017-December. p. 1-3 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Piezoelectric transducers
Voltage measurement
Sensors
Electric potential
Fiber Bragg gratings
2 Citations (Scopus)

Optimizing Temperature Coefficient and Frequency Response of Rogowski Coils

Lehtonen, T. A. & Hällstrom, J., 15 Oct 2017, In : IEEE Sensors Journal. 17, 20, p. 6646-6652 7 p., 8022679.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
frequency response
Frequency response
coils
coefficients
Temperature

Rogowski coil with reduced immunity to conductor location and stray magnetic fields

Hällström, J., Ayhan, B., Suomalainen, E-P. & Valero, A., 2017, Proceedings.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Using Deconvolution for Correction of Non-Ideal Step Response of Lightning Impulse Digitizers and Measurement Systems

Havunen, J., Hällström, J., Bergman, A. & Bergman, A. E., 2017, Proceedings.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2016
3 Citations (Scopus)

A reference merging unit and calibration setup for sampled values over Ethernet

Lehtonen, T. & Hällström, J., 11 Aug 2016, Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on. Institute of Electrical and Electronic Engineers IEEE, p. 1-2

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Ethernet
Merging
Calibration
Hardware

A three-phase calibration and field measurement setup based on a custom digitizer

Lehtonen, T., Hällström, J. & Suomalainen, E-P., 11 Aug 2016, Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on . Institute of Electrical and Electronic Engineers IEEE, p. 1-2

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

analog to digital converters
Finland
attenuators
budgets
computer programs

Bilateral high voltage ac peak and rms value comparison up to 150 kV between VTT and PTB

Meisner, J., Suomalainen, E-P., Hällström, J., Schmidt, M. & Seifert, H., 11 Aug 2016, Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on . Institute of Electrical and Electronic Engineers IEEE, p. 1-2

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Electric potential
Capacitors
Voltmeters
Voltage dividers
Gases

Precision loss measurement of reactive compensation components by sampling voltage and current

Mohns, E., Hällström, J., Suomalainen, E-P., Badura, H. & Fricke, S., 11 Aug 2016, Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on . Institute of Electrical and Electronic Engineers IEEE, p. 1-3

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Sampling
Electric potential
Capacitors
Compensation and Redress
Industry
2015

High AC current calibration system based on Rogowski coil

Havunen, J., Suomalainen, E-P. & Hällström, J., 2015, 2015 ISH: 19th International Symposium on High Voltage Engineering. 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Calibration
Electric instrument transformers
Busbars
Voltmeters
Electric current measurement

Long term stability of two 1000 kV voltage dividers

Elg, A., Bergman, A. & Hällström, J., 2015, Proceedings of the 19th International Symposium on High Voltage Engineering, Pilsen, Czech Republic, August, 23 – 28, 2015. University of West Bohemia, 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Voltage dividers
Electric potential
Calibration
Resistors
Painting
6 Citations (Scopus)

Performance of a modular wideband HVDC reference divider for voltages up to 1000 kV

Hällström, J., Bergman, A., Dedeoglu, S., Elg, A-P., Houtzager, E., Klüss, J., Lehtonen, T., Lucas, W., Meisner, J., Merev, A., Nieminen, T., Schmidt, M., Suomalainen, E-P. & Weber, C., 2015, In : IEEE Transactions on Instrumentation and Measurement. 64, 6, p. 1390-1397

Research output: Contribution to journalArticleScientificpeer-review

dividers
high voltages
broadband
Electric potential
electric potential
4 Citations (Scopus)

Traceability and Characterization of a 1000 kV HVDC Reference Divider

Elg, A-P., Bergman, A., Hällström, J., Kharezy, M. & Nieminen, T., 2015, In : IEEE Transactions on Instrumentation and Measurement. 64, 6, p. 1709-1715

Research output: Contribution to journalArticleScientificpeer-review

dividers
high voltages
Electric potential
Calibration
resistors
2014
12 Citations (Scopus)

Performance of a wideband 200-kV HVDC reference divider module

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, In : IEEE Transactions on Instrumentation and Measurement. 63, 9, p. 2264-2270 6 p.

Research output: Contribution to journalArticleScientificpeer-review

dividers
high voltages
modules
broadband
Electric potential
2013

Characterization of the linearity of a 1200 kV HVDC divider

Hällström, J., 2013, Espoo: Centre of Metrology and Accreditation. 16 p. (MIKES Publication; No. J2/2013).

Research output: Book/ReportReportProfessional

Open Access
dividers
linearity
high voltages
electric potential
resistors
2012
1 Citation (Scopus)

Demonstration of 50-Hz electrical active power measurement using a micromechanical magnetometer

Rimminen, H., Hällström, J., Immonen, P., Seppä, H., Manninen, A., Latonen, T., Kyynäräinen, J. & Kärkkäinen, A., 2012, Proceedings: Conference on Precision electromagnetic Measurements, CPEM 2012 2012. Institute of Electrical and Electronic Engineers IEEE, p. 232-233

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Magnetometers
Demonstrations
Lorentz force
Magnetic couplings
Electric potential

EURAMET #1172: Bilateral three-phase AC power and energy comparison at power frequency

Hällström, J., Suomalainen, E-P., Immonen, P. & Svensson, S., 2012, Espoo: Centre of Metrology and Accreditation. 18 p. (MIKES Publication; No. J2/2012).

Research output: Book/ReportReportProfessional

Open Access
alternating current
Finland
Sweden
energy
2011
6 Citations (Scopus)

Comparison of asynchronous sampling correction algorithms for frequency estimation of signals of poor power quality

Lapuh, R., Clarkson, P., Pogliano, U., Hällström, J. K. & Wright, P. S., 2011, In : IEEE Transactions on Instrumentation and Measurement. 60, 7, p. 2235-2241 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Frequency estimation
Power quality
sampling
Sampling
Measurement errors
2007
4 Citations (Scopus)

Construction and performance evaluation of calibration system for low voltage impulse

Wakimoto, T., Shimizu, H., Ishii, M., Hällström, J. & Lucas, W., 2007, In : IEEJ Transactions on Power and Energy. 127, 1, p. 261-266

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Calibration
Voltage measurement
Electric potential
Industry
Uncertainty
4 Citations (Scopus)

Worldwide comparison of lightning impulse voltage measuring systems at the 400-kV level

Hällstrom, J., Aro, M., Bergman, A., Bovier-Lapierre, V., Garnacho, F., Juvik, J. I., Kiseliev, V., Lian Hong, Z., Lucas, W., Li, Y., Pykälä, M. L., Rungis, J., Schon, K. & Truong, V. H., 2007, In : IEEE Transactions on Instrumentation and Measurement. 56, 2, p. 388-391

Research output: Contribution to journalArticleScientificpeer-review

lightning
Lightning
impulses
Electric potential
electric potential