PROTECTIVE RELAYING SYSTEM AND METHOD FOR GATHERING DATA USING THEREOF

• US 20150355236A1
• Filed: 06/08/2015
• Published: 12/10/2015
• Est. Priority Date: 06/09/2014
• Status: Active Grant

• Current Assignee: LSIS Co. Ltd. (LS Corporation)
• Original Assignee: LSIS Co. Ltd. (LS Corporation)
• Inventors: JEON, Byung Joon
• Granted Patent: US 10,101,366 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01R 1/36 Overload-protection arrangements or circuits for electric measuring instruments
• CPC Class Codes: G01R 31/343 in operation
• CPC Class Codes: H02H 1/0061 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 Class Codes: H02H 1/0084 by means of pilot wires or a telephone network; watching of these wires
• CPC Class Codes: H02H 3/025 Disconnection after limiting, e.g. when limiting is not sufficient or for facilitating disconnection
• CPC Class Codes: H02H 7/0822 Integrated protection, motor control centres
• CPC Class Codes: H02H 7/0856 characterised by the protection measure taken
• CPC Class Codes: H02H 7/261 involving signal transmission between at least two stations transmission of signals in general H02H1/0061
• CPC Class Codes: H02H 7/263 involving transmissions of measured values comparison of currents or voltages using pilot wires H02H3/30
• CPC Class Codes: H04L 43/0823 Errors, e.g. transmission errors
• CPC Class Codes: H04L 43/16 Threshold monitoring

Abstract

A protective relaying system and a data collection method thereof capable of enhancing a data collection efficiency and effectiveness is provided. The protective relaying system may include a plurality of protective relaying modules respectively connected to a switch to control the operation of the switch; a server module coupled to one of the plurality of protective relaying modules, and connected to the plurality of protective relaying modules, respectively, to sequentially collect and store data of the plurality of protective relaying modules; and a remote monitoring unit connected to the server module to collectively receive and collect the stored data of the plurality of protective relaying modules from the server module.

Claims

1. A protective relaying system, comprising:

a plurality of protective relaying modules respectively connected to a switch to control the operation of the switch;

a server module coupled to one of the plurality of protective relaying modules, and connected to the plurality of protective relaying modules, respectively, to sequentially collect and store data of the plurality of protective relaying modules; and

a remote monitoring unit connected to the server module to collectively receive and collect the stored data of the plurality of protective relaying modules from the server module.

2. The protective relaying system of claim 1, wherein the server module comprises a first communication channel and a second communication channel, and

the server module is connected to the plurality of protective relaying modules, respectively, through the first communication channel to collect the data of the plurality of protective relaying modules, and connected to the remote monitoring unit through the second communication channel to transmit the data of the plurality of protective relaying modules to the remote monitoring unit.

3. The protective relaying system of claim 2, wherein the server module collects and transmits the data of the plurality of protective relaying modules using the first communication channel and the second communication channel at the same time.

4. The protective relaying system of claim 2, wherein the second communication channel is connected to the remote monitoring unit through one of a wired communication scheme and a wireless communication scheme to perform data communication with the remote monitoring unit in a half-duplex communication mode.

5. The protective relaying system of claim 1, wherein the server module further comprises a storage unit configured to store the collected data of the plurality of protective relaying modules, and the data of the plurality of protective relaying modules is stored therein to contain ID information of each protective relaying module.

6. The protective relaying system of claim 1, wherein the server module operates by receiving driving power from the one protective relaying module coupled thereto.

7. A data collection method of a protective relaying system, the method comprising:

allowing a server module to scan a plurality of protective relaying modules, respectively, so as to store ID information of the plurality of protective relaying modules, respectively;

allowing the server module to sequentially collect and store data from the plurality of protective relaying modules according to the stored ID information; and

allowing the server module to collectively transmit the stored data to a remote monitoring unit in response to a data request of the remote monitoring unit.

8. The method of claim 7, wherein said storing the ID information of the plurality of protective relaying modules, respectively, comprises:

transmitting a call signal to the plurality of protective relaying modules, respectively, and receiving a response signal to the call signal from the plurality of protective relaying modules; and

extracting and storing the ID information of the plurality of protective relaying modules, respectively, from the received response signal.

9. The method of claim 8, further comprising:

determining whether the stored ID information corresponds to the last protective relaying module of the plurality of protective relaying modules; and

allowing the server module to continuously perform scanning on the plurality of protective relaying modules or sort the stored ID information according to a result of the determination.

10. The method of claim 7, wherein said sequentially collecting and storing data from the plurality of protective relaying modules comprises:

outputting a data request signal to the plurality of protective relaying modules, respectively, according to the stored ID information; and

collecting and storing data transmitted from the plurality of protective relaying modules, respectively, according to the data request signal,

wherein the server module completes data collection from a protective relaying module corresponding to one ID information among the plurality of protective relaying modules, and then performs data collection from a protective relaying module corresponding to another ID information.

11. The method of claim 7, wherein the server module stores data collected from the plurality of protective relaying modules, respectively, to match the ID information.

12. The method of claim 7, wherein the server module performs sequentially collecting and storing data from the plurality of protective relaying modules and collectively transmitting the stored data to the remote monitoring unit at the same time.