High-voltage lead-through device and arrangement for handling data of a high-voltage lead-through device

Patent metadata

Field	Value
Publication number	US-11269002-B2
Application number	US-201917294089-A
Country	US
Kind code	B2
Filing date	Nov 15, 2019
Priority date	Nov 15, 2018
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

A high-voltage lead-through device includes an insulator body having a solid exterior and including insulation, a main conductor passing therethrough, a sensor adjacent the main conductor inside the insulator body measuring a physical property of the device and a communication unit adjacent the main conductor outside the insulator body, wherein the main conductor has a first electric potential, a section of the solid exterior of the insulator body faces a second electric potential, the communication unit is connected to the sensor using a signal conductor as a first electrical communication medium and the communication unit employs a different communication medium for communicating with a data distribution device at a third electric potential.

First claim

The invention claimed is:

1. A high voltage lead-through device comprising:
an insulator body having a solid exterior and including insulation,
a main conductor passing through the insulator body surrounded by insulation, wherein the insulator body comprises a number of conducting foils around the main conductor, where a closest neighbouring foil is electrically connected to the main conductor, wherein in operation of the high-voltage lead-through device the main conductor is configured to have a first electric potential and at least a part of one section of the solid exterior of the insulator body is configured to face a second electric potential by passing through a plane, a ring or a coil having the second potential,
a sensor adjacent the main conductor in the interior of the insulator body inside the closest neighbouring foil and configured to measure a physical property of the high voltage lead-through device, and
a communication unit adjacent the main conductor outside of the insulator body and being connected to the sensor using a first communication medium,
wherein said communication unit comprises a communication module employing a second, different communication medium for communicating data concerning the measured physical property to a data distribution device at a third electric potential, and the first communication medium is an electrical communication medium in the form of a signal conductor separated from and stretching along at least a part of the main conductor.

2. The high-voltage lead-through device according to claim 1 , wherein said communication unit, sensor and main conductor have potentials that differ from each other by less than 50 V.

3. The high-voltage lead-through device according to claim 1 , wherein the first electric potential is at least 1 kV above both the second and the third electric potentials.

4. The high-voltage lead-through device according to claim 1 , wherein the physical properties are obtained at the electric potentials used in operation of the high-voltage lead-through device.

5. The high-voltage lead-through device according to claim 1 , wherein the main conductor is a conductor pipe.

6. The high-voltage lead-through device according to claim 5 , wherein the sensor is placed inside the conductor pipe.

7. The high-voltage lead-through device according to claim 1 , wherein the sensor is placed between the main conductor and the closest neighbouring foil.

8. The high-voltage lead-through device according to claim 1 , wherein the second communication medium is a wireless communication medium and the communication module is a wireless communication module.

9. The high-voltage lead-through device according to claim 8 , wherein the wireless communication medium is a wireless short-range communication medium.

10. The high-voltage lead-through device according to claim 8 , wherein the communication unit is a low power communication unit.

11. The high-voltage lead-through device according to claim 1 , wherein the sensor is a temperature sensor or a microphone.

12. The high-voltage lead-through device according to claim 1 , wherein the high voltage lead-through device is one of a wall bushing, a transformer bushing, a cable termination and an instrument transformer.

13. An arrangement for handling data of a high-voltage lead-through device that is a part of an electric power system, the arrangement comprising a data distributing device, a data handling device and the high-voltage lead-through device according to claim 1 , wherein the data handling device is configured to receive and handle the measured physical quantity.

14. The arrangement according to claim 13 , wherein the physical quantity comprises a temperature of the high-voltage lead-through device and the data handling device when handling the temperature is configured to calculate a dynamic thermal rating which can be used in control and protection of the electric power system.

15. The arrangement according to claim 13 , wherein the data handling device is configured to determine the ageing of the electric high voltage device based on the detected physical property.

Assignees

• Hitachi Energy Switzerland Ag

Inventors

• Forssén Cecilia
• Schiessling Joachim
• Sjöberg Peter
• Maxwell Andrew

Classifications

• G01R31/1227 Primary

  of components, parts or materials (G01R31/1209, G01R31/1218, G01R31/18 take precedence; circuits therefor G01R31/14; testing vessels of electrodes G01R31/16) · CPC title

• H01F27/04

  Leading of conductors or axles through casings, e.g. for tap-changing arrangements · CPC title

• H01B17/005

  Insulators structurally associated with built-in electrical equipment · CPC title

• G01R31/1209

  using acoustic measurements (acoustic measurements G01H3/00) · CPC title

• H01B17/28

  Capacitor type · CPC title