One option to determine electrical parameters of measuring transformers
DOI:
https://doi.org/10.29114/ajtuv.vol9.iss1.336Keywords:
angle eror, current error, current transformer, digital osciloscopeAbstract
. One challenge during the production, repair or even standard maintenance of measuring transformers is the use differential zero apparatus devices, which are costly and require second heavy current transformer with high class accuracy. To tackle this industry cost, while keeping robustness, this work focuses on presenting a method for automatic measurement of current transformer errors by personal computer and digital oscilloscope. The mathematical basis and an example program algorithm for the measuring process are also shown.. The principal electrical scheme of the worked out device is described. Finally, a validation experimental study is performed, the results are displayed and analyzed showing a good agreement with the reference zero apparatus device.
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Alessandro Mingotti, Lorenzo Peretto, Lorenzo Bartolomei, Diego Cavaliere and Roberto Tinarelli (2020). Are inductive current transformers performance really affected by actu-al distorted network conditions? An experimental case study. Sensors 2020, 20(3), 927; https://doi.org/10.3390/s20030927
Ernest Stano, Michał Kaczmarek (2022). Analytical method to determine the values of current error and phase displacement of inductive current transformers during transformation of distorted currents higher harmonics. Measurement Volume 200, 15 August 2022, 111664 https://doi.org/10.1016/j.measurement.2022.111664, https://www.sciencedirect.com/science/article/pii/S0263224122008
Bessolitsyn ,A. V., Golgovskich, A. V., Novikov, A. V.(2017). Experimental study of current error of up to 50 hz current-measuring transformer. 2017 International Confer-ence on Industrial Engineering, Applications and Manufacturing (ICIEAM), DOI: 10.1109/ICIEAM.2017.8076241, Conference Location: St. Petersburg, Russia
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