Metrological support of digital electronic voltage transformers and low-power voltage sensors

• Published in: Measurement techniques Vol. 66; no. 9; pp. 690 - 698
• Main Authors: Grishin, M. V., Leonov, A. V, Kucobin, A. A.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.12.2023; Springer Nature B.V
• Subjects: Alternating current; Analytical Chemistry; Characterization and Evaluation of Materials; Comparators; Current comparators; Electrical measurement; Errors; High voltages; Low voltage; Measurement Science and Instrumentation; Metrology; Physical Chemistry; Physics; Physics and Astronomy; Sensors; Uncertainty; Voltage converters; Voltage transformers; Phase displacement; Power frequency; AC voltage; Ratio error; Digital electronic voltage transformers; Low-power voltage sensors; Converters; 621.3.08; Transformers; State Primary Special Standard; Metrological support
• ISSN: 0543-1972; 1573-8906
• DOI: 10.1007/s11018-024-02282-5

Metrological support of digital electronic voltage transformers and low-power voltage sensors (converters, transformers) is presented. The methods and reference measurement facilities are described for the State Primary Special Standard of the coefficient of the ratio error and phase displacement of the AC electric voltage of the power frequency in the range from 0.1 /√3 to 750 /√3 kV, and the units of electrical capacitance and the loss angle tangent at AC voltage of the power frequency in the range from 1 to 500 kV in GÉT 175-2023, used for metrological support of the measurement facilities mentioned above. The results of the GÉT 175-2023 studies are presented—the expanded uncertainties in GÉT 175-2023 in the reproduction of the units of ratio error and phase displacement of the AC electric voltage of power frequency for metrological support of analog low-power voltage sensors (transformers, converters) include the uncertainty budget of the uncertainties of the current comparator, the low-voltage (reference) and high-voltage measurement measures, and the high-voltage MVÉ-01 bridge (SA7400MA1 amplifier), and are 9.62 · 10 −5 and 12.2 · 10 −5 rad, respectively. The expanded uncertainties in GÉT 175-2023 when reproducing the units of the ratio error and the phase displacement of the AC electric voltage of power frequency for metrological support of electronic digital voltage transformers and digital low-power voltage sensors (transformers, converters) include the uncertainty budget of the “high voltage–current” converter, “current–low voltage” converter, “low voltage–digital copy of voltage” converter, and the digital comparator, and are equal to 10.8 · 10 −5 and 7.64 · 10 −5 rad, respectively. GÉT 175-2023 makes it possible to solve the problems of the metrological support of electronic digital voltage transformers and digital low-power voltage sensors (transformers converters).