Apparatus, system, and method for sharing output contacts across multiple relays

• US 7,701,683 B2
• Filed: 09/29/2006
• Issued: 04/20/2010
• Est. Priority Date: 07/06/2001
• Status: Expired due to Fees

• Current Assignee: Schweitzer Engineering Laboratories, Incorporated, Tzer Engineering Laboratories, Inc.
• Original Assignee: Schweitzer Engineering Laboratories, Incorporated
• Inventors: Feltis, Mark W., Morris, Robert E., Lee, Tony J.
• Primary Examiner(s): Jackson; Stephen W
• Application Number:
  US11/540,253
• Publication Number:
  US 20070025036A1
• Time in Patent Office: 1,299 Days
• Field of Search: 361/64
• US Class Current: 361/64
• 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 7/261 involving signal transmission between at least two stations transmission of signals in general H02H1/0061

Abstract

A power system device-to-device direct communication system comprises a first intelligent electronic device with a processor and a transmit module. Software within the processor maintains a list of “virtual outputs,” which correspond to a number of data channels maintained within the transmit module. The second intelligent electronic device receives the data channels from the first intelligent electronic device and extracts the virtual output bits. The second intelligent electronic device then adjusts a group of its own output contacts in accordance with the received virtual output bits.

Claims

1. A device-to-device direct communication system in a power system comprising:

i) a first intelligent electronic device having a first processor and a transmit module coupled to a communication link and the processor, the processor providing a plurality of data channels and forming channel data including at least one virtual output; and

ii) a second intelligent electronic device coupled to said first intelligent electronic device with the communication link, the second processor, and a receive module coupled to the communication link, the second processor accepting the plurality of data channels and said channel data including the at least one virtual output to control said output of the second intelligent electronic device.

2. The device-to-device direct communication system of claim 1, wherein the second intelligent electronic device is identical to the first intelligent electronic device.

3. The device-to-device direct communication system of claim 1, wherein the first intelligent electronic device and the second intelligent electronic device are configured in a primary-backup scheme.

4. A device-to-device direct communication system in a power system comprising:

i) a first intelligent electronic device having a first processor and a receive module coupled to a communication link and the processor, the processor accepting a plurality of data channels from the communication link including at least one virtual input, the processor changing its internal state based on the at least one virtual input; and

ii) a second intelligent electronic device coupled to said intelligent electronic device with the communication link, said second intelligent electronic device having at least one input, a second processor coupled to the at least one input, and a transmit module coupled to the communication link and the second processor, said second processor providing said plurality of data channels and forming channel data including said virtual input corresponding to said input, and transmitting said channel data to said first intelligent electronic device with the transmit module.

5. The device-to-device direct communication system of claim 4, wherein the second intelligent electronic device is identical to the first intelligent electronic device.

6. The device-to-device direct communication system of claim 4, wherein said first intelligent electronic device and said second intelligent electronic device are configured in a primary-backup scheme.

7. The device-to-device direct communication system of claim 4, wherein said first intelligent electronic device further comprises a trip output, and the trip output is based on the at least one virtual input.

8. A device-to-device direct communication system in a power system comprising:

i) a first intelligent electronic device having a command input, a first processor, and a transmit module coupled to a communication link, said first processor providing a plurality of data channels and forming channel data including at least one virtual command formed from the command input; and

ii) a second intelligent electronic device coupled to said first intelligent electronic device by said communication link, said second intelligent electronic device having a receive module and a second processor, said second processor accepting said plurality of data channels and said channel data including said virtual command and executing said virtual command.

9. The device-to-device direct communication system of claim 8, wherein said second power protection device further comprises at least one output, and wherein said second processor executes said command and in response thereto alters said output.

10. A method for a first intelligent electronic device to control at least one output contact of a second intelligent electronic device comprising the steps of:

i) forming a plurality of data channels including at least one virtual output bit on the first intelligent electronic device;

ii) transmitting the plurality of data channels to the second intelligent electronic device; and

iii) adjusting the at least one output contact of the second intelligent electronic device based on the at least one virtual output bit.

11. A method for a first intelligent electronic device to monitor at least one input contact of a second intelligent electronic device comprising the steps of:

i) forming at least one virtual input bit corresponding to the at least one input contact of the second intelligent electronic device;

ii) forming a plurality of data channels including the at least one input contact on the second intelligent electronic device;

iii) transmitting the plurality of data channels to the first intelligent electronic device; and

iv) adjusting the internal state of the first intelligent electronic device based on the at least one virtual input bit.

12. A method for a first intelligent electronic device to forward commands to a second intelligent electronic device comprising the steps of:

i) receiving a command at the first intelligent electronic device;

ii) forming at least one command channel based on the command;

iii) forming a plurality of data channels including the at least one command channel;

iv) transmitting the plurality of data channels to the second intelligent electronic device; and

v) executing the command on the second intelligent electronic device.