Control unit for circuit breaker and controlling method thereof

Patent metadata

Field	Value
Publication number	US-9412546-B2
Application number	US-201414275659-A
Country	US
Kind code	B2
Filing date	May 12, 2014
Priority date	Jun 4, 2013
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

Disclosed are a control unit for a circuit breaker capable of controlling and monitoring various types of switches such as a circuit breaker and a switchgear included in power system equipment, by being attached to the switches or by being implemented in the form of an independent module, and a controlling method thereof. The control unit for a circuit breaker, which interworks with a relay and a circuit breaker, includes: an Ethernet drive configured to receive a GOOSE message type control signal from the relay connected thereto through Ethernet communication; a control module configured to operate the circuit breaker based on the GOOSE message type control signal; and a main control unit (MCU) module configured to transmit the GOOSE message type control signal to the control module, if the received GOOSE message type control signal is related to the control unit.

First claim

What is claimed is:

1. A control unit for a circuit breaker which interworks with a relay, the control unit comprising:
a status module configured to manage an operation status of the circuit breaker connected to the control unit;
an Ethernet drive configured to receive a GOOSE message type control signal from the relay via Ethernet communication;
a control module configured to operate the circuit breaker based on the GOOSE message type control signal; and
a main control unit (MCU) module configured to:
determine whether the GOOSE message type control signal is related to the control unit;
transmit the GOOSE message type control signal to the control module if the GOOSE message type control signal is related to the control unit; and
delete the GOOSE message type control signal if the received GOOSE message type control signal is unrelated to the control unit,
wherein the control unit is mounted outside of the circuit breaker as an independent module, and
wherein the relay is connected to one or more control units and the relay is configured to broadcast the GOOSE message type control signal to the one or more control units via Ethernet communication.

2. The control unit for a circuit breaker of claim 1 , wherein:
the control module is configured to apply a current to a magnetization coil to form a closed loop of the magnetization coil, a battery of the circuit breaker, and the control unit based on the received GOOSE message type control signal; and
a circuit breaking operation of the circuit breaker is performed by operation of the magnetization coil by the current.

3. The control unit for a circuit breaker of claim 1 , wherein the GOOSE message type control signal includes a control command, a status of a contact point, quality information and timestamp information.

4. The control unit for a circuit breaker of claim 2 , wherein the GOOSE message type control signal includes a control command, a status of a contact point, quality information and timestamp information.

Assignees

• Lsis Co Ltd

Inventors

• Ahn Hong Seon

Classifications

• H02H7/261 Primary

  involving signal transmission between at least two stations (transmission of signals in general H02H1/0061) · CPC title

• H01H51/00 Primary

  Electromagnetic relays (relays using the dynamo-electric effect H01H53/00) · CPC title

• H02H1/0061

  concerning transmission of signals (transmission of measured quantities or switching orders; sectionalised protection involving signal transmission between at least two stations H02H7/261; comparison of the voltage or current values at two spaced portions of a single system H02H3/28; transferring the output of a sensing member to another variable G01D5/00; electrical measuring arrangements using modulation of electromagnetic waves, e.g. light beams G01R15/24, G01R15/26) · CPC title

• H01H71/74 Primary

  Means for adjusting the conditions under which the device will function to provide protection · CPC title

• H02H7/263

  involving transmissions of measured values (comparison of currents or voltages using pilot wires H02H3/30) · CPC title