Method and device for measuring an electrical voltage
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United States of America Patent
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Aug 1, 2006
Grant Date -
N/A
app pub date -
Mar 5, 1998
filing date -
Mar 5, 1997
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Expired
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Abstract
A method and device for measuring electrical voltage allow measurement under open-air conditions including high-voltage and very high voltage. Influence of temperature changes on electrical and optical parameters of the device are reduced by using light sources, at least one optical transmission path, at least one sensor element with at least one active sensor part made up of several sensor crystals and evaluation by Pockel's effect using optical activity in a crystal. Measurement light generated by a light source penetrates an active sensor, which has at least two voltage comprising evaluation means for evaluating the polarization state of measurement light traversed through sensor crystals wherein the evaluation means is used with a component assembly for scaling and multiplying input signal by a factor generated by a function unit, its input quantity representing the difference between a reference signal and a factored output signal wherein the function unit performs integration.
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