In this paper authors present the result of a study oriented to assess the metrological characteristics of measuring systems used for verifying the variation of the ratio errors and phase displacements of inductive voltage transformers vs. temperature. Experimental results show that the designed equipment as well as the set up realized can be considered as a benchmark for the verification of the variations of ratio errors and phase displacements of up to 0.1-accuracy class voltage transformers vs. temperature. In addition, the sources that more contribute to the uncertainties on the ratio and phase errors have been investigated and discussed in the paper along with suggestions on where to act to further improve the accuracy of the presented set up.
Assessment of Metrological Characteristics of Calibration Systems for Accuracy vs. Temperature Verification of Voltage Transformer / Mingotti, Alessandro; Peretto, Lorenzo; Tinarelli, Roberto; Mauri, Flavio; Gentilini, Ivano. - ELETTRONICO. - (2017), pp. 8078325.1-8078325.6. (Intervento presentato al convegno 8th IEEE International Workshop on Applied Measurements for Power Systems, AMPS 2017 tenutosi a gbr nel 2017) [10.1109/AMPS.2017.8078325].
Assessment of Metrological Characteristics of Calibration Systems for Accuracy vs. Temperature Verification of Voltage Transformer
Mingotti, Alessandro;Peretto, Lorenzo;Tinarelli, Roberto;
2017
Abstract
In this paper authors present the result of a study oriented to assess the metrological characteristics of measuring systems used for verifying the variation of the ratio errors and phase displacements of inductive voltage transformers vs. temperature. Experimental results show that the designed equipment as well as the set up realized can be considered as a benchmark for the verification of the variations of ratio errors and phase displacements of up to 0.1-accuracy class voltage transformers vs. temperature. In addition, the sources that more contribute to the uncertainties on the ratio and phase errors have been investigated and discussed in the paper along with suggestions on where to act to further improve the accuracy of the presented set up.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
