Mixed-Mode Communication Between Devices in an Electrical Power System

• US 20140280714A1
• Filed: 03/15/2013
• Published: 09/18/2014
• Est. Priority Date: 03/15/2013
• Status: Abandoned Application

• Current Assignee: Schweitzer Engineering Laboratories, Incorporated
• Original Assignee: Schweitzer Engineering Laboratories, Incorporated
• Inventors: Dolezilek, David J., Day, Benjamin S., Gammel, Dennis, Bradetich, Ryan, Bennett, Jerry J., Ewing, Christopher, Achanta, Shankar V.
• Application Number:
  US13/841,688
• Publication Number:
  US 20140280714A1
• Time in Patent Office: Days
• US Class Current: 709/217
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06
• CPC Class Codes: Y04S 40/18 Network protocols supporting networked applications, e.g. including control of end-device applications over a network

Abstract

Systems and methods are presented for facilitating mixed-mode communication between stations in an electric power generation and delivery system. In certain embodiments, a method for facilitating mixed-mode communication between a first device configured to communicate according to a first communication protocol and a second device configured to communicate according to a second communication protocol is presented The method may include installing a network device in a communication channel between the first device and the second device. A communications interface of the network device may be configured to receive messages from the first device and the second device. A message reconfiguration system of the network device may be configured to reconfigure messages received by the network device from the first device to reconfigured messages for transmission to the second device.

Claims

1. A system for communicating between devices in an electric power system comprising:

a first intelligent electronic device (IED) configured to communicate according to a first communication protocol;

a second IED configured to communicate according to a second communication protocol; and

a network device communicatively coupled between the first IED and the second IED, the network device comprising;

a communications interface configured to receive one or more first messages from the first IED according to the first communication protocol for transmission to the second IED; and

a message reconfiguration system configured to;

determine that the second IED is configured to communicate according to the second communication protocol, and

reconfigure the one or more first messages received from the first IED according to the first communication protocol into one or more corresponding second messages according to the second protocol for transmission to the second IED,

wherein the communications interface is further configured to transmit the one or more second messages to the second IED.

2. The system of claim 1, wherein the first IED is included in a first station of the electric power system.

3. The system of claim 2, wherein the second IED is included in a second station of the electric power system

4. The system of claim 3, wherein the network device is included in the first station of the electric power delivery system.

5. The system of claim 1, wherein one of the first communication protocol and the second communication protocol is comprise one of an IEC 861850 Generic Object Oriented Substation Events (GOOSE) protocol, a Distributed Network Protocol (DNP), and a Mirrored Bits®

protocol.

6. The system of claim 1, wherein the communications interface comprises a first communication port and a second communication port, the first communication port configured to receive the one or more first messages from the first IED, and the second communication port configured to transmit the one or more second messages to the second IED.

7. The system of claim 1, wherein the message reconfiguration system is further configured to determine that the second IED is configured to communicate according to the second communication protocol by communicating with the second IED.

8. The system of claim 1, wherein the message reconfiguration system is further configured determine that the second IED is configured to communicate according to the second communication protocol by accessing a database storing information indicating that the second IED is configured to communicate using the second communication protocol.

9. The system of claim 1, wherein the second communication protocol is the GOOSE protocol, wherein the at least one or more second messages comprise messages included in a message stream comprising multiple redundant copies of the at one or more second messages.

10. The system of claim 1, wherein the one or more first messages comprise information generated by the first IED regarding one or more pieces of monitored equipment monitored by the first IED.

11. A system for communicating between devices in an electric power system comprising:

a network;

a plurality of first intelligent electronic devices (IEDs) configured to communicate according to a first communication protocol communicatively coupled to the network;

a second IED configured to communicate according to a second communication protocol communicatively coupled to the network; and

a network device communicatively coupled to the network between the plurality of first IEDs and the second IED, the network device comprising;

a communications interface configured to receive one or more first messages from each of the plurality of first IEDs according to the first communication protocol for transmission to the second IED; and

a message reconfiguration system configured to;

access information indicating that the second IED is configured to communicate according to the second communication protocol, and

reconfigure at least one of the one or more first messages from each of the plurality of first IEDs into a corresponding second message according to the second protocol for transmission to the second IED,

wherein the communications interface is further configured to transmit the second message to the second IED.

12. The system of claim 11, wherein the plurality of first IEDs are included in a first station of the electric power system.

13. The system of claim 12, wherein the second IED is included in a second station of the electric power system

14. The system of claim 13, wherein the network device is included in the first station of the electric power delivery system.

15. The system of claim 11, wherein one of the first communication protocol and the second communication protocol comprised one of an IEC 861850 Generic Object Oriented Substation Events (GOOSE) protocol, a Distributed Network Protocol (DNP), and a Mirrored Bits®

protocol.

16. The system of claim 11, wherein the communications interface comprises a first communication port and a second communication port, the first communication port configured to receive the one or more first messages from the first IED, and the second communication port configured to transmit the one or more second messages to the second IED.

17. The system of claim 11, wherein the message reconfiguration system is further configured to access information indicating that the second IED is configured to communicate according to the second communication protocol by communicating with the second IED.

18. The system of claim 11, wherein the message reconfiguration system is further configured to access information indicating that the second IED is configured to communicate according to the second communication protocol by accessing a database storing information indicating that the second IED is configured to communicate using the second communication protocol.

19. The system of claim 11, wherein the second communication protocol is the GOOSE protocol, wherein the at least one or more second messages comprise messages included in a message stream comprising multiple redundant copies of the at least one or more second messages.

20. The system of claim 11, wherein the one or more first messages comprise information generated by each of the plurality of first IEDs regarding one or more pieces of monitored equipment monitored by the plurality of first IEDs.

21. A method of facilitating mixed-mode communication between a first intelligent electronic device (IED) configured to communicate according to a first communication protocol and a second IED configured to communicate according to a second communication protocol included in an electrical power generation and delivery system, the method comprising:

determining that the first IED and the second IED communicate according to different communication protocols;

installing a network device in a communication channel between the first IED and the second IED;

configuring a communications interface of the network device to receive messages from the first IED and transmit messages to the second IED; and

configuring a message reconfiguration system of the network device to reconfigure messages received by the network device from the first IED in the first communication protocol to messages for transmission to the second IED according to the second protocol.