Sensor attached IC tag application high voltage equipment

• US 7,868,755 B2
• Filed: 10/05/2007
• Issued: 01/11/2011
• Est. Priority Date: 10/12/2006
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Wada, Haruhisa, Sato, Masayuki, Takagi, Hirokazu, Hanai, Masahiro, Maruyama, Shiro
• Primary Examiner(s): Lee; Benjamin C
• Assistant Examiner(s): BEE, ANDREW W.
• Application Number:
  US11/868,111
• Publication Number:
  US 20080087115A1
• Time in Patent Office: 1,194 Days
• Field of Search: 340/539.22, 340/635, 361/814, 361/816
• US Class Current: 340/539.22
• CPC Class Codes: G01K 1/024 for remote indication
• CPC Class Codes: G01K 13/00 Thermometers specially adapted for specific purposes
• CPC Class Codes: H01H 1/0015 Means for testing or for inspecting contacts, e.g. wear indicator measuring circuits G01R31/3274
• CPC Class Codes: H01H 11/0062 Testing or measuring non-electrical properties of switches, e.g. contact velocity monitoring contacts H01H1/0015; monitoring gas density H01H33/563; monitoring vacuum H01H33/668; calibrating H01H69/01; adjusting H01H71/74; testing of electrical properties G01R31/333
• CPC Class Codes: H01H 2011/0068 measuring the temperature of the switch or parts thereof
• CPC Class Codes: H01H 33/26 Means for detecting the presence of an arc or other discharge
• CPC Class Codes: H01T 21/00 Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs

Abstract

To shorten a period of time necessary for performing routine inspections and reduce costs by monitoring a state such as a contact failure of a switching equipment which constitutes a power reception circuit or a branch circuit of a substation through a simple construction. A sensor attached IC tag application high voltage equipment is constructed by detachably mounting a sensor attached IC tag at a position where a sensor of a sensor attached IC tag obtains a physical quantity of a detection target, wherein the sensor attached IC tag is configured to communicate with an externally located IC tag reader.

Claims

1. A sensor attached IC tag application high voltage equipment, comprising:

a container filled with an insulating gas;

a high voltage unit provided inside the container; and

a sensor attached IC tag detachably mounted to a position where a sensor of the sensor attached IC tag senses a characteristic of a detection target of the high voltage unit, wherein the sensor attached IC tag is configured to communicate with an IC tag reader located outside the sensor attached IC tag application high voltage equipment,

wherein the sensor attached IC tag is covered with a semiconductor material separate from the sensor attached IC tag having an electric time constant in which an inverse number of the electric time constant is larger than 1 MHz and the inverse number of the electric time constant is smaller than a communication frequency of the sensor attached IC tag such that the sensor attached IC tag communicates through the semiconductor material, and the semiconductor material protects the sensor attached IC tag from electrical discharges generated by the high voltage unit and electrical discharges occurring near the sensor attached IC tag.

2. The sensor attached IC tag application high voltage equipment according to claim 1, wherein the high voltage equipment is any one of a circuit breaker having a contact point for switching an electric connection state of the high voltage unit and a disconnecting switch, a lightning arrester having a non-linear resistor element in the container, and a bushing having a conductor which is supported by an insulator in the container and achieves an electric connection with an external equipment.

3. The sensor attached IC tag application high voltage equipment according to claim 1, wherein the sensor attached IC tag is mounted to at least one of an electrode unit which is electrically connected to a connection lead of another apparatus and the high voltage unit in the container.

4. The sensor attached IC tag application high voltage equipment according to claim 3, wherein a mounting hole formed into a groove shape is provided to at least one of the electrode unit electrically connected to the connection lead of the other apparatus and the high voltage unit in the container, and the sensor attached IC tag is detachably mounted to the mounting hole.

5. The sensor attached IC tag application high voltage equipment according to claim 1, wherein the sensor attached IC tag is provided with a memory for recording a measurement result obtained by the sensor of the sensor attached IC tag.

6. The sensor attached IC tag application high voltage equipment according to claim 1, wherein the sensor of the sensor attached IC tag is a temperature sensor for measuring a temperature at a position to which the sensor attached IC tag is attached.

7. The sensor attached IC tag application high voltage equipment according to claim 1, wherein the sensor of the sensor attached IC tag has a partial discharge detection function for detecting a partial discharge generated in the vicinity of the sensor attached IC tag.

8. The sensor attached IC tag application high voltage equipment according to claim 1, wherein the sensor attached IC tag includes a battery for supplying electric power for operating the sensor attached IC tag and has a battery charging function of charging the battery by receiving a radio transmitted from outside the equipment.

9. The sensor attached IC tag application high voltage equipment according to claim 1, wherein the container has a wall of which at least part of a surface is formed of a nonmetal and wherein the sensor attached IC tag is mounted into the container and communicates with an IC tag reader located outside the equipment.

10. The sensor attached IC tag application high voltage equipment according to claim 1, further includes an electrode unit which is electrically connected to a connection lead of other apparatus, located outside the container, wherein the sensor attached IC tag is mounted to the electrode unit and communicates with an IC tag reader located outside the equipment.

11. The sensor attached IC tag application high voltage equipment according to claim 1, wherein the electric time constant corresponds to a product of an electric resistivity and a dielectric constant of the separate semiconductor material.

12. The sensor attached IC tag application high voltage equipment according to claim 1, wherein the sensor attached IC tag covered with the semiconductor material is arranged on an exterior portion of the container having the high voltage unit provided within.