Calibration of Commercial Test Sets for Non-Conventional Instrument Transformers

This paper describes the design and setup of different measuring systems for the calibration of commercial voltage and current transformer test sets for non-conventional instrument transformers. The calibration systems are recently developed at the national metrology institutes VSL, PTB, METAS and TUBITAK within the frame of the European project “FUTURE GRID — Non-conventional voltage and current sensors for future power grids”. The attained uncertainty of the calibration systems is in the order of 10 ppm and 10 μrad for testing the analogue non-conventional input and 20 ppm and 80 μrad for testing the digital (IEC 61850-9-2) input of the test set.

[1]  Hüseyin Çaycı.  Application of Digital Sampling Method for Voltage Transformer Test Set Calibrations , 2010 .

[2]  Alessandro Mortara,et al.  A Calibration Setup for IEC 61850-9-2 Devices , 2017, IEEE Transactions on Instrumentation and Measurement.

[3]  Branislav Djokic,et al.  Development of a system for the calibration of digital bridges for non-conventional instrument transformers , 2016, 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016).

[4]  Harald Moser,et al.  A new scheme for generating and measuring active, reactive, and apparent power at power frequencies with uncertainties of 2.5×10 -6 , 1998, IEEE Trans. Instrum. Meas..

[5]  Paul S. Wright,et al.  Characterization of Metrological Grade Analog-to-Digital Converters Using a Programmable Josephson Voltage Standard , 2011, IEEE Transactions on Instrumentation and Measurement.

[6]  Enrico Mohns,et al.  A Wideband Current Transformer Bridge , 2014, IEEE Transactions on Instrumentation and Measurement.

[7]  Hüseyin Çaycı.  A complex current ratio device for the calibration of current transformer test sets. , 2011 .

[8]  E. Mohns,et al.  An AC power amplifier for testing instrument transformer test equipment , 2016, 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016).

[9]  C. Liguori,et al.  Propagation of uncertainty in a discrete Fourier transform algorithm , 2000 .

[10]  Frédéric Overney,et al.  Synchronization of Sampling-Based Measuring Systesm , 2014, IEEE Transactions on Instrumentation and Measurement.