Calibration and Leakage Impedance Measurements of a Standard 1:2 Ratio Autotransformer Inductive Voltage Divider

Electronic transformer performance evaluation and its impact on PMU

“…When the modulation index is small (as it is here), only the fundamental and J 1 is significant and the higher order terms can be ignored. Therefore, (17) is similar to the amplitude modulation case (15) and can be analysed in the same way. (Fig.…”

“…A low-power voltage transformer for medium voltage application was tested in [14], specifically for the application of international standards about instrument transformers for power quality measurements. Skubis and Piaskowy [15] proposed a method and circuit for determination of the ratio error of an inductive autotransformer voltage divider. Studies in [16] indicated that the disparity in practical environmental conditions, which influences the proximity electric field, was a significant reason that active electronic voltage transformers (EVT) exhibit excessive errors at some substation sites.…”