Intelligent sensor and controller framework for the power grid

• US 10,263,786 B2
• Filed: 01/19/2018
• Issued: 04/16/2019
• Est. Priority Date: 08/05/2011
• Status: Active Grant

• Current Assignee: Battelle Memorial Institute
• Original Assignee: Battelle Memorial Institute
• Inventors: Akyol, Bora A., Haack, Jereme Nathan, Craig, Jr., Philip Allen, Tews, Cody William, Kulkarni, Anand V., Carpenter, Brandon J., Maiden, Wendy M., Ciraci, Selim
• Primary Examiner(s): Shaw, Brian F
• Application Number:
  US15/875,959
• Publication Number:
  US 20180159691A1
• Time in Patent Office: 452 Days
• CPC Class Codes: G01R 19/2513 Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
• CPC Class Codes: G06F 21/44 Program or device authentication
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/123 received data contents, e.g. message integrity
• CPC Class Codes: H04L 63/126 the source of the received data
• CPC Class Codes: H04L 9/3247 involving digital signatures
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security

Abstract

Disclosed below are representative embodiments of methods, apparatus, and systems for monitoring and using data in an electric power grid. For example, one disclosed embodiment comprises a sensor for measuring an electrical characteristic of a power line, electrical generator, or electrical device; a network interface; a processor; and one or more computer-readable storage media storing computer-executable instructions. In this embodiment, the computer-executable instructions include instructions for implementing an authorization and authentication module for validating a software agent received at the network interface; instructions for implementing one or more agent execution environments for executing agent code that is included with the software agent and that causes data from the sensor to be collected; and instructions for implementing an agent packaging and instantiation module for storing the collected data in a data container of the software agent and for transmitting the software agent, along with the stored data, to a next destination.

Claims

1. A computer-implemented method, comprising:

loading data defining an uninitiated software agent, the data defining the uninitiated software agent comprising executable code for performing an agent task, the agent task being to update executable code for an existing software agent by replacing at least a portion of the executable code for the existing software agent with updated executable code defining an updated software agent;

identifying one or more destination nodes to which the uninitiated software agent is to be transmitted;

in response to the identifying, generating data defining an initiated software agent, the data defining the initiated software agent comprising immutable data that indicates identities of the destination nodes, and the data defining the uninitiated software agent; and

transmitting the data defining the initiated software agent to one of the destination nodes;

in response to the transmitting, performing the agent task; and

storing the updated software agent on one or more computer-readable storage media.

2. The method of claim 1, wherein the data defining the uninitiated software agent includes data indicating a cryptographic signature of the uninitiated software agent signed by a creator of the uninitiated software agent, and wherein the method further comprises determining that the uninitiated software agent is authorized based at least in part on the cryptographic signature of the uninitiated software agent signed by the creator.

3. The method of claim 1, wherein one or more of the destination nodes are communicatively coupled to (a) a sensor for measuring an electrical parameter of a power line of a power grid, (b) a sensor for measuring an electrical parameter of a distributed generator coupled to the power grid, (c) an electrical meter for a household coupled to the power grid, (d) a control unit for one or more household electrical devices that receive power from the power grid, or (e) a control unit for controlling power distribution on the power grid.

4. The method of claim 1, wherein the method is performed by computing hardware associated with a first hierarchical level of a power grid, and wherein the data defining the uninitiated software agent is sent from computing hardware associated with a second hierarchical level of the power grid at a higher level than the first hierarchical level.

5. The method of claim 4, wherein the data defining the uninitiated software agent includes data indicating a cryptographic signature for the uninitiated software agent generated by the computing hardware associated with the second hierarchical level of the power grid, and wherein the method further comprises determining that the uninitiated software agent is authorized based at least in part on the cryptographic signature for the uninitiated software agent generated by the computing hardware associated with the second hierarchical level of the power grid.

6. One or more non-transitory computer-readable media storing computer-executable instructions, which when executed by a computer cause the computer to perform the method of claim 1.

7. A circuit comprising computing hardware configured to perform the method of claim 1.

8. The method of claim 1, wherein the method is performed by computing hardware associated with a feeder in a power grid, and wherein the one or more destination nodes correspond to homes powered by the feeder.

9. The method of claim 1, wherein the data defining the initiated software agent further comprises immutable data that indicates configuration parameters for the agent task, data indicating an identity of an initiator of the initiated software agent, and data indicating a cryptographic signature of the initiated software agent.

10. The method of claim 1, wherein the data defining the uninitiated software agent further comprises data indicating resource requirements for executing the uninitiated software agent.

11. The method of claim 1, further comprising, responsive to receiving the data defining the initiated software agent at said one of the destination nodes, and prior to performing the agent task:

notifying the existing software agent at said one of the destination nodes that an update is in progress;

storing a snapshot of a state of the existing software agent; and

terminating execution of the existing software agent.

12. The method of claim 11, further comprising, after performing the agent task, restoring the state of the updated existing software agent from the stored snapshot.

13. A computer-implemented method, comprising:

generating data defining an uninitiated software agent, the data including executable code for performing an agent task, data indicating an identity of a creator of the uninitiated software agent, and data indicating computing resources required to perform the agent task;

identifying one or more destination nodes to which the uninitiated software agent is to be transmitted;

in response to the identifying, gene rating data defining an initiated software agent, the data defining the initiated software agent comprising immutable data that indicates identities of the destination nodes and the executable code for performing the agent task;

transmitting the initiated software agent to one of the destination nodes;

in response to the transmitting, performing the agent task, the agent task including replacing at least a portion of executable code of an existing software agent at said one of the destination nodes with new agent code defining an updated software agent; and

storing the updated software agent on one or more computer-readable storage media.

14. The method of claim 13, wherein the data defining an uninitiated software agent further includes data indicating a cryptographic signature signed by the creator of the uninitiated software agent.

15. The method of claim 13, wherein the agent task is performed at least in part by (a) a sensor for measuring an electrical parameter of a power line of a power grid, (b) a sensor for measuring an electrical parameter of a distributed generator coupled to the power grid, (c) an electrical meter for a household coupled to the power grid, (d) a control unit for one or more household electrical devices that receive power from the power grid, or (e) a power distribution control device coupled to the power grid.

16. The method of claim 13, wherein replacing at least a portion of the executable code for performing the agent task with new agent code comprises adding to the executable code for performing the agent task.

17. One or more non-transitory computer-readable media storing computer-executable instructions, which when executed by a computer cause the computer to perform a method, the computer-executable instructions comprising:

instructions that cause the computer to generate data defining an uninitiated software agent, the data including executable code for performing an agent task, data indicating an identity of a creator of the uninitiated software agent, and data indicating computing resources required to perform the agent task;

instructions that cause the computer to identify one or more destination nodes to which the uninitiated software agent is to be transmitted;

instructions that cause the computer to, in response to the identifying, generate data defining an initiated software agent comprising the data defining the uninitiated software agent and the identities of the destination nodes;

instructions that cause the computer to, in response to generating the data defining the initiated software agent, transmit the initiated software agent to one of the destination nodes;

instructions that cause the computer to, in response to the transmitting, replace at least a portion of executable code of an existing software agent at said one of the destination nodes with new agent code defining an updated software agent; and

instructions that cause the computer to store the updated software agent on one or more computer-readable storage media.