Back to results
US 12,683,043 B2Granted
Smart electrical bushing with integrated sensor
AssigneeHitachi Energy Ltd
InventorsAnsgar Dais, Jens Rocks
Life of this patent
Estimating the term…
Abstract
Electrical bushing for medium and high voltage, the bushing including a fluid filled insulation volume; a sensor unit in contact with the fluid in the fluid filled insulation volume; wherein the sensor unit is configured to measure a breakdown voltage of the fluid.
Claims20
Electrical bushing for medium and high voltage, the bushing comprising:
- a fluid filled insulation volume;
- and
- a sensor unit in contact with the fluid in the fluid filled insulation volume, the sensor unit configured to measure a breakdown voltage of the fluid,
- wherein the sensor unit is mounted in a radial protrusion that extends from a body of the electrical bushing and is in contact with the fluid, wherein the radial protrusion is formed by and extends from the body of the electrical bushing, the radial protrusion defining a portion of the fluid filled insulation volume of the electrical bushing.
1 more element
A transformer assembly for medium and high voltage, the assembly comprising:
- a transformer having a transformer housing;
- and
- an electrical bushing comprising:
- a fluid filled insulation volume;
- and
- a sensor unit in contact with the fluid in the fluid filled insulation volume, the sensor unit configured to measure a breakdown voltage of the fluid,
- wherein the sensor unit is mounted in a radial protrusion that extends from a body of the electrical bushing and is in contact with the fluid, wherein the radial protrusion is formed by and extends from the body of the electrical bushing, the radial protrusion defining a portion of the fluid filled insulation volume of the electrical bushing.
4 more elements
A method for detecting a breakdown flag indicative of a failing medium or high voltage bushing having a fluid filled insulation volume, the method comprising
- acquiring sensor data by a sensor unit of the bushing, the sensor unit being in contact with a fluid in the fluid filled insulation volume, the sensor data describing a breakdown voltage of the fluid, wherein the sensor unit is mounted in a radial protrusion that extends from a body of the electrical bushing and is in contact with the fluid, wherein the radial protrusion is formed by and extends from the body of the electrical bushing, the radial protrusion defining a portion of the fluid filled insulation volume of the electrical bushing;
- determining a breakdown flag, the breakdown flag describing whether the sensor data has passed a threshold for the breakdown voltage of the fluid in the bushing;
- and
- issuing a control signal based on the breakdown flag.
1 more element
Dependencies are inferred from the claim text.