Title: Setup and Characterisation of Reference Current-to-Voltage Transformers for Wideband Current Transformers Calibration up to 2 kA
Authors: Chen, Yeying, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.3, Elektrische Energiemesstechnik
Mohns, Enrico, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.3, Elektrische Energiemesstechnik
Badura, Henrik, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.3, Elektrische Energiemesstechnik
Räther, Peter, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 2.3, Elektrische Energiemesstechnik
Luiso, Mario, University of Campania “Luigi Vanvitelli” (Department of Engineering), Caserta, ITALY
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Pages:7
Language:en
DOI:10.7795/EMPIR.17IND06.CA.20191122
Resource Type: Text / Article
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Rights: Private use is allowed for non-profit purposes only.
Relationships: IsVariantFormOf: DOI 10.1109/AMPS.2019.8897759
Dates: Available: 2019-11-26
File: Download File (application/pdf) 575.16 kB (588964 Bytes)
MD5 Checksum: 5f22d471d7525a19cfaffe400132d2fa
SHA256 Checksum: 8ec9776110ba1cf38d3c0a0d2493989a31da9dfec7fd2aa8327e564cba164083
Abstract: This paper describes the setup and characterisation of a set of wideband Current-to-Voltage (C-to-V) transformers equipped with a symmetrical winding arrangement on its primary side. The transformer set is being developed at PTB and contributes to the European project “FutureGrid II – metrology for the next-generation digital substation instrumentation”. The objective of this paper was to use the reference transformer to calibrate the digital instrument transformer (IT) not only accurately at power frequency but also stably within a wider bandwidth. The calibrated errors of the first current transformer (CT), which is known as CT50, were within ±5 ppm and μrad at 50 Hz. The uncertainty of the CT50 was ±6·10-6 for the ratio and phase errors (k = 2). The frequency response errors of the CT50 up to 12 kHz were below 0.1 % and 0.2 crad with the expanded uncertainties below ±1·10-4 for the ratio errors and ±3·10-4 for the phase errors (k = 2).
Citation: Y. Chen, E. Mohns, H. Badura, P. Räther and M. Luiso, "Setup and Characterisation of Reference Current-to-Voltage Transformers for Wideband Current Transformers Calibration up to 2 kA," 2019 IEEE 10th International Workshop on Applied Measurements for Power Systems (AMPS), Aachen, Germany, 2019, pp. 1-6. DOI: 10.1109/AMPS.2019.8897759