High voltage sensor located within line insulator
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United States of America Patent
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Sep 13, 2016
Grant Date -
Feb 11, 2016
app pub date -
Aug 5, 2014
filing date -
Aug 5, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A high voltage sensor is located within a dielectric canister inside a high voltage power line support insulator. A space through the voltage sensor accommodates a mechanical connecting rod associated with a circuit interrupter switch located in another section of the support insulator. An electrically floating dumbbell-shaped sensor extending between and capacitively coupled to high voltage and low voltage shields assumes a midpoint voltage value between the shields. A sensor plate or other suitable pickup capacitively coupled to the dumbbell sensor provides a voltage measurement, which is calibrated to provide a measurement of the power line voltage. This solution allows a voltage sensor to be added to or integrated in conventionally sized power line support insulators with no additional size, negligible additional weight, and minimal additional cost.
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