Partial discharge synthesizer
AssigneeRosemount Inc.
InventorsJeffrey C. Andle, David Lane, Maly Chap
Life of this patent
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Abstract
An apparatus for generating electrical discharge includes a component that generates an electrical discharge, a measurement circuit configured to measure a magnitude of the electrical discharge, and a controller configured to control the magnitudes of the electrical discharge. A method for controlling a reference partial discharge signal in an electric power system includes generating a partial discharge for built in self test, controlling an expected discharge magnitude of the partial discharge, and includes measuring an actual discharge magnitude of the partial discharge.
Claims36
An apparatus for generating electrical discharge, comprising:
- a component that generates an electrical discharge;
- a measurement circuit configured to measure a magnitude of the electrical discharge;
- a controller configured to control the magnitudes of the electrical discharge;
- a first current mirror having an input coupled to a discharge path of the component that generates the electrical discharge;
- and
- a sensor, the sensor coupled to an output path of the first current mirror, the sensor sensing a magnitude of the electrical discharge.
A system, comprising:
- an electric power system comprising a partial discharge measurement component;
- and
- a component that generates an electrical discharge;
- a measurement circuit configured to measure a magnitude of the electrical discharge;
- a controller configured to control the magnitude of the electrical discharge;
- wherein the controller is further configured to perform a built-in self-test calibration process of measurement instruments integral to the system by:
- sequentially instructing the system to perform a self-test of the system and its measurement instruments by generating and internally measuring an electrical discharge at a predetermined level in a predetermined pattern;
- internally measuring a response to the self-test electrical discharge with the measurement circuit;
- externally measuring a system response to the internally measured discharge;
- determining a calibration state of the measurement circuit;
- and
- using the calibration state to adjust the measurement circuit.
A method for controlling a reference partial discharge signal in an electric power system using a component that generates an electrical discharge, a measurement circuit configured to measure a magnitude of the electrical discharge, and a controller configured to control the magnitudes of the electrical discharge, the method, comprising:
- generating a partial discharge for built in self test;
- controlling an expected discharge magnitude of the partial discharge;
- and
- measuring an actual discharge magnitude of the partial discharge.
Dependencies are inferred from the claim text.