HIGH AND ULTRA-HIGH VOLTAGE CIRCUIT BREAKING SYSTEM

• US 20170125194A1
• Filed: 10/29/2015
• Published: 05/04/2017
• Est. Priority Date: 10/29/2015
• Status: Active Grant

• Current Assignee: Long Hall Technologies
• Original Assignee: Long Hall Technologies
• Inventors: Hsu, Lai-Wang
• Granted Patent: US 9,673,011 B2
• Time in Patent Office: Days
• CPC Class Codes: H01H 33/002 Very heavy-current switches H01H33/02 - H01H33/98 take precedence
• CPC Class Codes: H01H 33/027 Integrated apparatus for measuring current or voltage
• CPC Class Codes: H01H 73/02 Details
• CPC Class Codes: H01H 75/02 Details
• CPC Class Codes: H01H 81/02 electrothermally operated

Abstract

The circuit breaking system contains a power circuit whose voltage is greater than 600 volts, at least a circuit breaking device, at least a current detection device, a current reduction unit, at least an actuation device, and a linking device. The circuit breaking system is applicable to a high or ultra-high voltage power circuit, and the power circuit is interrupted through purely mechanical means without additional electricity provision. Even when there are major disasters that existing protection means fails, the present invention can still function and provides a trip free, ultimate self-protection mechanism so that a power system can be readily reset.

Claims

1. A circuit breaking system, comprising:

a power circuit whose voltage is greater than 600 volts;

at least a current detection device in the power circuit where the current detection device comprises a current reduction unit providing a reduced output current;

at least a circuit breaking device in the power circuit electrically connected to the current detection device for selectively opening the power circuit;

a linking device in the vicinity of the circuit breaking device; and

at least an actuation device electrically connected to the current detection device where the actuation device engages the circuit breaking device to open the power circuit through the linking device when the output current from the current reduction unit exceeds a preset value of the actuation device.

2. The circuit breaking system according to claim 1, wherein the actuation device comprises a heat sensing element which causes the actuation device to engage the linking device when accumulated heat results in a change to an extent.

3. The circuit breaking system according to claim 2, wherein the change is one in expansion of a solid, expansion of a gas, hydraulic pressure, and elasticity.

4. The circuit breaking system according to claim 1, wherein the current detection device is a current transformer;

and, when there are three current detection devices, the circuit breaking device is a three-phase circuit breaking device.

5. The circuit breaking system according to claim 1, wherein the voltage of the power circuit is between 1 kV and 503 kV.

6. The circuit breaking system according to claim 1, wherein the linking device comprises a shaft for selectively and mechanically driving the circuit breaking device.

7. A circuit breaking system, comprising:

a power circuit whose voltage is greater than 600 volts;

at least a current detection device in the power circuit where the current detection device comprises a current reduction unit;

at least a circuit breaking device in the power circuit electrically connected to the current detection device for selectively opening the power circuit;

a linking device in the vicinity of the circuit breaking device; and

at least a manual breaking device connected to the linking device for manually controlling the circuit breaking device to open the power circuit through the linking device.

8. The circuit breaking system according to claim 7, wherein the linking device comprises a shaft for selectively and mechanically driving the circuit breaking device.

9. The circuit breaking system according to claim 7, wherein the current detection device is a current transformer;

and, when there are three current detection devices, the circuit breaking device is a three-phase circuit breaking device.

10. The circuit breaking system according to claim 7, wherein the voltage of the power circuit is between 1 kV and 503 kV.