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Amplitude-Frequency Characteristic of Broadband Voltage Divider with Ultimate Adjustment of Its Low-Voltage Arm

Abstract

This paper examines resistive-capacitive voltage dividers. Broadband voltage dividers, which should be used as primary voltage transducers for measuring power quality parameters, must have a constant amplitude-frequency characteristic in the frequency range from zero to tens of megahertz. The paper contains research necessary to reduce the instability of the amplitude-frequency characteristic of the voltage divider, which is caused by the non-identical resistive and capacitive elements of its high-voltage arm. It is shown that adjusting the capacitance of the low-voltage arm of the voltage divider it is possible to reduce the oscillation magnitude of the amplitude-frequency characteristic of the voltage divider in the transition domain by about 2.25 times.

Authors

• Volodymyr Brzhezitsky (National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”)
• Yaroslav Haran (National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”)
• Andrii Derzhuk (Public Joint Stock Company “DTEK”); Yevgeniy Trotsenko (National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”)
• Olexandr Protsenko (National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”)