System, method and program for detecting anomalous events in a network

• US 9,887,893 B2
• Filed: 02/20/2017
• Issued: 02/06/2018
• Est. Priority Date: 08/06/2010
• Status: Active Grant

• Current Assignee: Itron Networked Solutions, Inc. (Itron, Inc.)
• Original Assignee: Silver Spring Networks, Inc. (Itron, Inc.)
• Inventors: Vaswani, Raj, van Greunen, Jana, Dubey, Aditi, Shah, Kunal Pankaj
• Primary Examiner(s): Coulter, Kenneth R
• Application Number:
  US15/436,928
• Publication Number:
  US 20170163508A1
• Time in Patent Office: 351 Days
• Field of Search: 709224, 709223, 714 43, 714 44, 714 25, 702 51, 702 57- 62, 702 64, 702 65
• CPC Class Codes: G01D 2204/22 Arrangements for detecting or reporting faults, outages or leaks
• CPC Class Codes: G01D 4/004 Remote reading of utility meters to a fixed location
• CPC Class Codes: H04L 43/0817 by checking functioning
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Abstract

A communication device detects whether anomalous events occur with respect to at least one node in a utility network. The communication device has recorded therein threshold operating information and situational operating information. The threshold operating information includes data indicative of configured acceptable operating parameters of nodes in the network based on respective locational information of the nodes. The situational information includes data indicative of configured operation data expected to be received from nodes in the network during a predetermined time period, based on a condition and/or event occurring during the time period. The communication device receives operation data from nodes in the network, and determines whether the operation data from a node constitutes an anomalous event based on a comparison of the received operation data with (i) the threshold operating information defined for the node and (ii) the situational information. The communication device outputs notification of any determined anomalous event.

Claims

1. A network communication device configured to monitor operating events occurring in a network, the communication device comprising:

a memory unit having historical operating information and situational information recorded therein, the historical operating information including data indicative of historical operation of nodes in the network based on respective locational information of each of the nodes in the network, the locational information of each one of the nodes respectively including unique information about that node, relative to each other one of the nodes in the network, such that there is historical operating information for each node in the network based on the unique locational information for that node, and the situational information including data indicative of operation data expected to be received from nodes in the network during a predetermined time period based on at least one of a condition and an event that is occurring during the predetermined time period;

a communication unit configured to receive respective operation data from nodes in the network;

a control unit configured to compare the operation data received from a node in the network with (i) the historical operating information for the node from which the operation data was received and (ii) the situational information, and to associate the received operation data with the historical operating information and the situational information in the memory unit based on the comparison of the received operation data with (i) the historical operating information for the node and (ii) the situational information.

2. The communication device according to claim 1, wherein the control unit is configured to determine whether the operation data received from a node exceeds historical patterns for the node from which the operation data is received, based on the comparison of the received operation data with (i) the historical operating information for the node from which the operation data was received and (ii) the situational information, and to record in the memory unit when the received operation data exceeds the historical patterns for the node.

3. The communication device according to claim 1, wherein the control unit is configured to update at least one of the historical operating information for the node and the situational information recorded in the memory unit, based on the comparison of the received operation data with (i) the historical operating information for the node and (ii) the situational information, when at least one of a) the received operation data deviates a predetermined amount from (i) the historical operating information for the node or (ii) the situational information, and b) operating conditions in the network have changed.

4. The communication device according to claim 1, wherein the historical operating information for a node in the network includes information defining historical operating patterns of the node to which the historical operating information pertains, and

wherein the control unit is configured to include operation data received from the node in the historical operating information for the node so that future operation data received from the node will be compared with the received operation data, and

wherein the historical operating information is recorded with version information indicating a version of the historical operating information.

5. The communication device according to claim 1, wherein the locational information of a node includes at least one of:

geographic information about a premises at which the node is located;

connection information indicating whether the node is currently connected to a distribution network to receive distribution of a commodity from the distribution network;

residential usage information of the premises at which the node is located;

attribute information of the premises at which the node is located;

premises comparison information indicating a comparative size of the premises at which the node is located relative to other premises at which other nodes in the network are located;

load usage information indicating at least one device serviceable at the node;

functional information indicating a functional use of the premises at which the node is located;

periodic usage patterns indicating a historical consumption of a commodity during a predetermined time period;

financial information indicating a current account status with a distribution network to which the node is connected to receive distribution of a commodity distributed by the distribution network; and

construction information indicating at least one of a construction date and a repair date of the premises at which the node is located.

6. The communication device according to claim 1, wherein the situational information defines operation data expected to be received during the predetermined time period based on at least one of an event-based, operational-based, seasonal-based and weather-based condition occurring at the predetermined time period.

7. The communication device according to claim 6, wherein the situational information includes an adjustment value for operational parameters of the historical operating information for a node based on the at least one of the event-based, operational-based, seasonal-based and weather-based condition occurring at the predetermined time period.

8. The communication device according to claim 1, wherein the at least one node is a utility network interface device associated with a utility meter.

9. The communication device according to claim 1, wherein the control unit is configured to:

compare the operation data received from a node with the historical operating information for the node from which the operation data was received;

determine whether the received operation data represents an acceptable operating condition based on the comparison of the received operation data with the historical operating information;

compare the received operation data with the situational information, if the control unit determines that the received operation data represents an acceptable operating condition based on the comparison of the received operation data with the historical operating information;

determine whether the received operation data represents operation data that is expected to be received based on the comparison of the received operation data with the situational information;

determine that the received operation data represents an anomalous event, if the control unit determines that the received operation data does not represent expected operation data based on the comparison of the received operation data with the historical operating information, the historical operating information for a node including acceptable operating parameters for the node based on the expected operation data for the node and whether any received operation data represented an anomalous event;

determine whether the acceptable operating parameters included in the historical operating information for the node are altered by the situational information, if the control unit determines that the received operation data does not represent an acceptable operating condition based on the comparison of the received operation data with the historical operating information;

determine that the received operation data represents an anomalous event, if the control unit determines that the acceptable operating parameters included in the historical operating information for the node are not altered by the situational information;

compare the received operation data with the situational information, if the control unit determines that the acceptable operating parameters included in the historical operating information for the node are altered by the situational information;

determine whether the received operation data represents operation data that is expected to be received based on the comparison of the received operation data with the situational information, if the control unit determines that the acceptable operating parameters included in the historical operating information for the node are altered by the situational information; and

determine that the received operation data represents an anomalous event, if the control unit determines that the received operation data does not represent expected operation data based on the comparison of the received operation data with the historical operating information, and if the control unit determines that the acceptable operating parameters included in the historical operating information for the node are altered by the situational information.

10. The communication device according to claim 9, wherein the control unit is configured to wait for new operation data to be received if the control unit does not determine that the compared operation data represents an anomalous event.

11. The communication device according to claim 1, wherein the control unit is configured to:

compare the received operation data with the situational information;

determine whether the received operation data represents operation data that is expected to be received based on the comparison of the received operation data with the situational information;

compare the received operation data with the historical operating information for the node, if the control unit determines that the received operation data represents expected operation data based on the comparison of the received operation data with the situational information;

determine whether the received operation data represents an acceptable operating parameter based on the comparison of the received operation data with the historical operating information;

determine that the received operation data represents an anomalous event, if the control unit does not determine that the received operation data represents an acceptable operating parameter based on the comparison of the received operation data with the historical operating information; and

determine that the received operation data represents an anomalous event, if the control unit determines that the received operation data does not represent expected operation data based on the comparison of the received operation data with the historical operating information.

12. The communication device according to claim 11, wherein the control unit is configured to wait for new operation data to be received if the control unit does not determine that the compared operation data represents an anomalous event.

13. The communication device according to claim 1, wherein the control unit is configured to:

compare the received operation data with the historical operating information for the node;

compare the received operation data with the situational information;

determine whether the received operation data represents an acceptable operating parameter based on the comparison of the received operation data with the historical operating information;

determine whether the received operation data represents operation data that is expected to be received based on the comparison of the received operation data with the situational information; and

determine that the received operation data represents an anomalous event, if the control unit determines that at least one of (i) the received operation data does not represent an acceptable operating parameter based on the comparison of the received operation data with the historical operating information, and (ii) the received operation data does not represent expected operation data based on the comparison of the received operation data with the situational information.

14. The communication device according to claim 13, wherein the control unit is configured to wait for new operation data to be received if the control unit does not determine that the compared operation data represents an anomalous event.

15. The communication device according to claim 14, wherein the notification unit is configured to output the notification of the anomalous event at the time the control unit determines that the anomalous event has occurred.

16. The communication device according to claim 1, wherein the communication device includes a user interface configured to receive a modification of at least one of the historical operating information and the situational information recorded in the memory unit.

17. The communication device according to claim 1, wherein the at least one node is selected from the group consisting of:

a network interface device associated with a meter in a utility network, an access point in the utility network, a remote terminal unit equipped with a utility network interface device, a distribution device of a distribution network, and a terminal of a distribution automation system equipped with a utility network interface device.

18. A method of operating a network communication device to monitor operating events occurring in a network, the method comprising:

defining, in the communication device, historical operating information for nodes in the network, the historical operating information including data indicative of historical operation of nodes in the network based on respective locational information of each of the nodes in the network, the locational information of each one of the nodes respectively including unique information about that node, relative to each other one of the nodes in the network, such that there is historical operating information for each node in the network based on the unique locational information for that node;

defining, in the communication device, situational information for the nodes in the network, the situational information including data indicative of operation data expected to be received from nodes in the network during a predetermined time period based on at least one of a condition and an event that is occurring during the predetermined time period;

recording the defined historical operating information and situational information in a memory unit of the communication device;

receiving respective operation data from at least one node in the network;

comparing, in a processing unit of the communication device, the received operation data with (i) the historical operating information and (ii) the situational information which are respectively for the node from which the operation data was received; and

associating the received operation data with the recorded historical operating information and the situational information in the memory unit of the communication device, based on the comparison of the received operation data with (i) the historical operating information for the node from which the operation data was received and (ii) the situational information.

19. The method according to claim 18, comprising:

determining, in the processing unit of the communication device, whether the operation data received from a node exceeds historical patterns for the node from which the operation data is received, based on the comparison of the received operation data with (i) the historical operating information defined for the node from which the operation data was received and (ii) the situational information; and

recording in the memory unit when the received operation data exceeds the historical patterns for the node.

20. The method according to claim 18, comprising:

updating, in the processing unit of the communication device, at least one of the historical operating information defined for the node from which the operation data was received and the situational information recorded in the memory unit, based on the comparison of the received operation data with (i) the historical operating information defined for the node from which the operation data was received and (ii) the situational information, when at least one of a) the received operation data deviates a predetermined amount from (i) the historical operating information defined for the node from which the operation data was received or (ii) the situational information, and b) operating conditions in the network have changed.

21. A non-transitory computer-readable recording medium having a computer program recorded thereon that causes a control unit of a network communication device communicatively connected to the computer-readable recording medium to monitor operating events occurring in a network, the program causing the control unit of the communication device to execute operations comprising:

defining historical operating information for nodes in the network, the historical operating information including data indicative of historical operation of nodes in the network based on respective locational information of each of the nodes in the network, the locational information of each one of the nodes respectively including unique information about that node, relative to each other one of the nodes in the network, such that there is historical operating information for each node in the network based on the unique locational information for that node;

defining situational information for the nodes in the network, the situational information including data indicative of operation data expected to be received from nodes in the network during a predetermined time period based on at least one of a condition and an event that is occurring during the predetermined time period;

recording the defined historical operating information and situational information in a memory unit of the communication device;

receiving respective operation data from at least one node in the network;

comparing the received operation data with (i) the historical operating information and (ii) the situational information which are respectively defined for the node from which the operation data was received; and

associating the received operation data with the recorded historical operating information and the situational information in the memory unit of the communication device, based on the comparison of the received operation data with (i) the historical operating information defined for the node from which the operation data was received and (ii) the situational information.

22. The non-transitory computer-readable recording medium according to claim 21, wherein the program causes the control unit of the communication device to execute an operations comprising:

determining whether the operation data received from a node exceeds historical patterns for the node from which the operation data is received, based on the comparison of the received operation data with (i) the historical operating information defined for the node from which the operation data was received and (ii) the situational information; and

recording when the received operation data exceeds the historical patterns for the node.

23. The non-transitory computer-readable recording medium according to claim 21, wherein the program causes the control unit of the communication device to execute an operation comprising:

updating the at least one of the historical operating information defined for the node from which the operation data was received and the situational information recorded in the memory unit, based on the comparison of the received operation data with (i) the historical operating information defined for the node from which the operation data was received and (ii) the situational information, when at least one of a) the received operation data deviates a predetermined amount from (i) the historical operating information defined for the node from which the operation data was received or (ii) the situational information, and b) operating conditions in the network have changed.