Device for measuring temperature gradients applied to a precision capacitive divider voltage sensor
AssigneeGE Vernova Infrastructure Technology LLC
InventorsPatrice Juge, Reto Christen
Life of this patent
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Abstract
A capacitive sensor having a cylindrical capacitor, for a conductor of a GIS. The capacitive sensor having at least two digital or analog temperature sensors.
Claims14
A GIS containing a gas and comprising at least one conductor and at least one capacitive sensor comprising a cylindrical capacitor, arranged around the conductor, the sensor comprising at least two digital or analogue temperature sensors whereby the temperature sensors can measure the temperature directly in the gas of the GIS;
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- means for estimating or calculating a temperature gradient between the at least two temperature sensors and/or an average value of the temperatures measured by the at least two temperature sensors.
A GIS containing a gas and comprising at least one conductor and at least one capacitive sensor comprising a cylindrical capacitor, arranged around the conductor, the senso comprising at least two digital or analogue temperature sensors whereby the temperature sensors can measure the temperature directly in the gas of the GIS;
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- further comprising means for compensating the voltage value measured by the capacitive sensor on the basis of the geometrical parameters of the capacitor, and possibly of the temperature measurements of at least two temperature sensors and/or of the temperature gradient between the at least two temperature sensors and/or of the average temperature measured with the at least two temperature sensors and/or of the variation of the geometrical parameters due to dilatation resulting from the temperature.
Dependencies are inferred from the claim text.