Nonlinear voltage divider

C. Dughir, A. Ignea, G. Gasparesc, A. Vârtosu

Abstract

This paper is focused on how to implement a nonlinear voltage divider used in the electrical power network disturbances measurement system preconditioning circuit. The voltages acquired from the electrical power network have amplitudes between 0.2 kV and 10 kV, values which are very high for an acquisition board. These amplitudes must be reduced to the values accepted by the acquisition boards: ±10V. If the signal from the electrical power network is divided with a linear voltage divider, the smaller variations around the nominal values of the voltage on the electrical power network can not be detected. This is the reason to prefer the use of a nonlinear voltage divider.

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DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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