Generation and control of network events and conversion to SCADA protocol data types

• US 9,401,839 B2
• Filed: 01/09/2009
• Issued: 07/26/2016
• Est. Priority Date: 04/04/2008
• Status: Active Grant

• Current Assignee: Schweitzer Engineering Laboratories, Incorporated
• Original Assignee: Schweitzer Engineering Laboratories, Incorporated
• Inventors: Kidwell, Beau, Weber, Mark, Morman, Daniel N.
• Primary Examiner(s): Keehn, Richard G
• Application Number:
  US12/351,079
• Publication Number:
  US 20090254655A1
• Time in Patent Office: 2,755 Days
• Field of Search: 709223-224
• US Class Current: 1/1
• CPC Class Codes: G05B 19/4183 characterised by data acquisition, e.g. workpiece identification
• CPC Class Codes: G05B 2219/32404 Scada supervisory control and data acquisition
• CPC Class Codes: G05B 23/0208 characterized by the configuration of the monitoring system
• 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: H04L 41/0226 Mapping or translating multiple network management protocols
• CPC Class Codes: H04L 41/06 Management of faults, events, alarms or notifications
• 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 69/085 specially adapted for interworking of IP-based networks with other networks
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/18 using switches, relays or circuit breakers, e.g. intelligent electronic devices [IED]
• CPC Class Codes: Y04S 10/30 State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
• CPC Class Codes: Y04S 40/00 Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
• CPC Class Codes: Y04S 40/124 using wired telecommunication networks or data transmission busses

Abstract

A system and method is disclosed for receiving a network event in a network format, mapping the network event into a format expected by a central monitoring system, and communicating the mapped network event to the central monitoring system. The system may employ a variety of communication protocols and physical architectures. The system may include an access controller that may connect a plurality of intelligent electronic devices and may be the primary interface with an information system or central monitoring system. The access controller may include a programmable logic engine in compliance with the IEC-61131-3 standard. The access controller may further be configured to implement rules designed to govern actions taken as a result of network information.

Claims

1. A system for communicating a network event and monitored system data from an Intelligent Electronic Device (IED) to a central monitoring system comprising:

a plurality of IEDs in communication with and separate from monitored equipment,

gathering monitored equipment information therefrom for producing monitored system data relating to a status of an electric power distribution system, and,

transmitting the monitored system data;

an access controller in communication with the plurality of IEDs and configured to receive the monitored system data from the plurality of IEDs, and further receiving the network event, the access controller comprising;

an IED interface to communicate with the plurality of IEDs

a central monitoring system communications interface to transmit the monitored equipment information to the central monitoring system according to a Supervisory Control and Data Acquisition (SCADA) format used by the central monitoring system;

an information system communications interface to communicate with an information system according to a non-SCADA format used by the information system;

a processor; and

a logic engine receiving the network event according to the non-SCADA format, transmitting the network event to the information system in the non-SCADA format, data mapping the network event into the SCADA format, and transmitting the mapped network event to the central monitoring system through the central monitoring system communications interface in the SCADA format;

wherein the SCADA format and the non-SCADA format comprise distinct communication protocols and the central monitoring system is incapable of communication using the non-SCADA format.

2. The system of claim 1 wherein the access controller further comprises a local human machine interface.

3. The system of claim 1 wherein the access controller further comprises a common time interface.

4. The system of claim 1 wherein the logic engine stores the network event.

5. The system of claim 4 wherein the central monitoring system communications interface is configured to receive the network event.

6. The system of claim 4 wherein the information system communications interface is configured to receive the network event.

7. The system of claim 1 wherein the network event module is further configured to determine if the network event satisfies a condition, and to selectively transmit the network event to the data mapping module if the network event satisfies the condition.

8. The system of claim 7 wherein the condition is programmable in compliance with the IEC-61131-3 standard.

9. The system of claim 1 wherein the access controller further comprises a rules module executable on the processor and configured to receive the network event, to generate a control instruction based on the network event and a rule, and to transmit the control instruction to an intelligent electronic device in communication with the access controller.

10. The system of claim 9 wherein the computer readable storage medium is configured to store the control instruction.

11. The system of claim 9 wherein the rules module is programmable in compliance with the IEC-61131-3 standard.

12. The system of claim 9 wherein the rules module is configured to administer a rule governing user access to the access controller.

13. The system of claim 9 wherein the rules module is configured to administer a rule governing user access to the intelligent electronic device.

14. The system of claim 9 wherein the rules module automatically makes available data specified in a rule based on login information provided by a user.

15. The system of claim 9 wherein the rules module is configured as a firewall.

16. The system of claim 1 wherein the access controller is a programmable logic controller.

17. The system of claim 1, wherein the central monitoring system comprises one of a Supervisory Control and Data Acquisition (SCADA) system, an outage management systems, an Automatic Meter Reading (AMR) system, and an Advanced Metering Infrastructure (AMI) system.

18. The system of claim 17, wherein the central monitoring system format is selected from the group consisting of DNP3, MODBUS RTU, MODBUS TCP, IEC 61850 and IEEE C37.118.

19. The system of claim 1, wherein the information system comprises a plurality of devices configured to transmit network communications.

20. The system of claim 19, wherein the plurality of devices comprises at least one of a modem, a router, and a firewall.

21. The system of claim 19, wherein the information system is configured to implement a network security policy.

22. The system of claim 21, wherein the network security policy comprises selectively permitting remote network access to a remote user based on a rule governing user access.

23. An access controller, comprising:

a first interface receiving a network event from an Intelligent Electronic Device (IED) of an electric power distribution system according to a network format, the network event comprising an indication of a status change associated with an information system configured to govern access to a plurality of network devices associated with the electric power distribution system;

a second interface communicating monitored system data to a central monitoring system according to a Supervisory Control and Data Acquisition (SCADA) format, the network event and the monitored system data comprising distinct data communicated according to distinct formats, wherein the network format is a non-SCADA format;

an information system communications interface to communicate with an information system according to the network format used by the information system;

an IED interface communicating with a plurality of connected IEDs, the plurality of IEDs

in communication with monitored equipment,

gathering monitored equipment information therefrom for producing the monitored system data, and,

transmitting the monitored system data to the IED interface,

the IED interface configured to receive the monitored system data from the plurality of IEDs;

a microprocessor; and

a logic engine in communication with the first interface the second interface, and the information system communications interface, wherein the logic engine;

maps the network event from the network format into the SCADA format and transmits the mapped network event to the central monitoring system through the second interface; and

transmits the network event in the network format to the information system through the information system communications interface.

24. The system of claim 23 wherein the format used by the central monitoring system format is selected from the group consisting of DNP3, MODBUS RTU, MODBUS TCP, IEC 61850 and IEEE C37.118.

25. The system of claim 23 wherein the computer readable storage medium is further configured to store the network event.

26. The system of claim 23 wherein the access controller further comprises:

a rules module configured

to receive the network event;

to generate a control instruction based on the network event and a rule; and

to transmit the control instruction to an intelligent electronic device in communication with the access controller.

27. The system of claim 26 wherein the rules module is programmable in compliance with the IEC-61131-3 standard.

28. The system of claim 26 wherein the computer readable storage medium is further configured to store the control instruction.

29. A method for communicating a network event to a central monitoring system comprising:

an access controller receiving a network event in a first format at an Intelligent Electronic Device (IED) interface;

gathering monitored equipment information from a plurality of IEDs in communication with and separate from monitored equipment;

the plurality of IEDs producing monitored system data relating to a status of an electric power distribution system from the monitored equipment information;

the plurality of IEDs transmitting the monitored system data in a Supervisory Control and Data Acquisition (SCADA) format to the access controller, wherein the access controller transmits the monitored system data in the SCADA format to a central monitoring system configured to use the monitored system data to maintain stability of the electric power distribution system;

the access controller receiving the monitored system data from the plurality of IEDs at the IED interface;

the plurality of IEDs communicating the network event and the monitored system data to the access controller, the network event and the monitored system data comprising distinct data communicated according to the first format, and the SCADA format, respectively, wherein the first format and SCADA format are distinct formats;

the access controller generating a mapped network event by mapping the network event from the first format to the SCADA format using a logic engine;

the access controller communicating the mapped network event to the central monitoring system using a second interface; and

the access controller communicating the network event to an information system using the first format.

30. The method of claim 29 further comprising:

receiving the monitored system data from a monitored equipment; and

storing the network event and the monitored system data using a computer readable storage medium.

31. The method of claim 29 further comprising:

comparing the network event to a condition specified in a rule; and

generating a control instruction if the condition specified in the rule is met.

32. A system for communicating a network event and monitored system data from an Intelligent Electronic Device (IED) to a Supervisory Control and Data Acquisition (SCADA) system, comprising:

a plurality of IEDs in communication with and separate from monitored equipment,

gathering monitored equipment information therefrom for producing monitored system data relating to a status of an electric power distribution system, and,

transmitting the monitored system data to a central monitoring system that uses the monitored system data to maintain stability of the electric power distribution system;

an access controller in communication with the plurality of IEDs and to receive the monitored system data from the plurality of IEDs, and further receiving the network event, the access controller comprising;

an IED interface to communicate with the plurality of IEDs to receive the network event and monitored system data;

a SCADA communications interface to communicate with the central monitoring system according to a first format selected from the group consisting of DNP3, MODBUS RTU, MODBUS TCP, IEC 061850 and IEEE C37.118;

an information system communications interface to communicate with an information system according to a second format, the information system comprising a distinct system from the central monitoring system;

a processor; and

a logic engine that;

receives the network event,

transmits the network event to the information system using the second format,

data maps the network event into the first format, and

transmits the mapped network event, and the monitored system data to the central monitoring system through the SCADA communications interface using the first format.

33. The system of claim 32, wherein the access controller further comprises a local human machine interface.

34. The system of claim 32, wherein the access controller further comprises a common time interface.

35. The system of claim 32, wherein the logic engine stores the network event.

36. The system of claim 32, wherein the network event module is further configured to determine if the network event satisfies a condition, and to selectively transmit the network event to the data mapping module if the network event satisfies the condition.

37. The system of claim 36, wherein the condition is programmable in compliance with the IEC-61131-3 standard.

38. The system of claim 32, wherein the access controller further comprises a rules module executable on the processor and configured to receive the network event, to generate a control instruction based on the network event and a rule, and to transmit the control instruction to an intelligent electronic device in communication with the access controller.

39. The system of claim 38, wherein the computer readable storage medium is configured to store the control instruction.

40. The system of claim 38, wherein the rules module is configured perform an action selected from the group consisting of:

governing user access to the access controller;

governing user access to the intelligent electronic device;

making available data specified in a rule based on login information provided by a user; and

acting as a firewall.

41. The system of claim 38, wherein the access controller comprises a programmable logic controller.