UTILITY LOAD CONTROL MANAGEMENT COMMUNICATIONS PROTOCOL

• US 20100179707A1
• Filed: 03/24/2010
• Published: 07/15/2010
• Est. Priority Date: 08/20/2003
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Cox, Robert, Cannon, Joel, Rognli, Roger
• Granted Patent: US 7,869,904 B2
• Time in Patent Office: Days
• US Class Current: 700/295
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: H04L 12/2818 from a device located outside both the home and the home network access arrangements H04L12/2856; for remote control or remote monitoring of applications H04L67/025; arrangements for transmitting signals characterised by the use of a wireless eletrical link G08C17/00; telephonic communication systems adapted for combination with remote control systems H04M11/007
• CPC Class Codes: H04L 2012/2841 Wireless
• CPC Class Codes: H04L 2012/2843 Mains power line
• CPC Class Codes: H04L 2012/2845 Telephone line
• CPC Class Codes: H04L 2012/285 Generic home appliances, e.g. refrigerators
• CPC Class Codes: H04L 67/125 involving control of end-device applications over a network
• CPC Class Codes: Y04S 40/18 Network protocols supporting networked applications, e.g. including control of end-device applications over a network

Abstract

A method for managing a utility load by controlling electrical consumption of electrically powered devices. The method includes selecting a target for load control forming a single variable length load control message according to a communication protocol. The load control message includes the target address and a plurality of unique concatenated command messages, each of the plurality of unique concatenated command messages being selected from the set consisting of a command message having a predetermined message type and a fixed length message defined for the predetermined message type and a command message having a predetermined message type and a variable length message corresponding to values in a command message control flag field defined for the predetermined message type. The method also includes causing the single variable length load control message to be transmitted to the target and receiving a reply message formed according to the communication protocol from the target.

Claims

1. A method for managing a utility load from a master utility station by controlling electrical consumption of electrically powered devices, the method comprising the steps of:

selecting at least one target for load control and assigning the at least one target at least one target address;

using a control system of a utility provider to form a single variable length load control message according to a communication protocol, wherein the load control message includes the at least one target address and a plurality of unique concatenated command messages as part of the single variable length load control message, each of the plurality of unique concatenated command messages being selected from the set consisting of a command message having a predetermined message type and a fixed length message defined for the predetermined message type and a command message having a predetermined message type and a variable length message corresponding to values in a command message control flag field defined for the predetermined message type; and

causing the single variable length load control message to be transmitted via a communication network to the at least one target for execution of the variable length load control message, and wherein the at least one target comprises an individual end user device and the at least one target address comprises a device-level address; and

receiving a reply message formed according to the communication protocol via a communication network at the master utility station from the at least one target after the load control message is transmitted.

2. The method of claim 1, wherein the causing the single variable length load control message to be transmitted via a communication network and receiving a reply message formed according to the communication protocol via a communication network are performed on the same communication network.

3. The method of claim 1, wherein the plurality of unique concatenated command messages includes a priority command message.

4. The method of claim 1, wherein causing the load control message to be transmitted via a communication network comprises causing the load control message to be transmitted via a wireless communication network, and receiving the reply message via the communication network comprises receiving the reply message via the wireless communication network.

5. The method of claim 4, wherein causing the load control message to be transmitted via the wireless communication network comprises causing the load control message to be transmitted via the wireless communication network at a radio frequency, and receiving a reply message via the communication network comprises receiving the reply message via the wireless communication network at the radio frequency.

6. The method of claim 1, wherein causing the load control message to be transmitted via the communication network comprises causing the load control message to be transmitted via a wired communication network and receiving the reply message via the communication network comprises receiving the reply message via the wired communication network.

7. The method of claim 6, wherein the wired communication network is selected from a group consisting of a power line communication network, a telephone service network and an interne service network.

8. The method of claim 1, further comprising formatting the single variable length load control message and the reply message according to a selected communication interface, the communication interface selected from the group consisting of analog cellular control channel two-way communication protocols, digital two-way communication protocols, and serial compliant digital network protocols.

9. The method of claim 1, wherein forming the variable length load control message according to the communication protocol comprises forming the variable length load control message according to a binary byte-oriented communication protocol.

10. The method of claim 1, wherein the plurality of unique concatenated command messages are selected from a group consisting of specific load management messages, configuration messages, maintenance messages, data messages, and customizable messages.

11. The method of claim 1, wherein the plurality of unique concatenated command messages are selected from a group consisting of:

frequency synchronize the at least one target device time synchronize the at least one target device with the control center;

set priority of the plurality of concatenated command messages;

test signal reception of the at least one target device;

initiate control of the at least one target device for a period of time;

cancel control of the at least one target device;

provide under-frequency control of the at least one target device;

provide under-voltage control of the at least one target device;

cycle the at least one target device off for a cycle period;

modify a thermostat temperature set-point of the at least one target device;

set a thermostat limit temperature of the at least one target device;

configure a thermostat state of the at least one target device;

set a thermostat price tier level of the at least one target device;

send data to the at least one target device;

request data from the at least one target device;

log data from the at least one target device;

configure the at least one target device;

perform internal maintenance of the at least one target device;

permanently deactivate the at least one target device;

activate the at least one target device;

temporarily deactivate the at least one target device;

temporarily activate the at least one target device; and

send control information to a capacitor bank controller.

12. The method of claim 1, wherein the at least one target comprises a plurality of end user devices defined as at least one group and the at least one target address comprises at least one group-level address.

13. The method of claim 12, wherein the at least one group comprises at least one load-level group.

14. The method of claim 12, wherein the at least one group comprises at least one geographic area.

15. The method of claim 14, wherein the at least one geographic area is defined by a postal code.

16. The method of claim 14, wherein the geographic area is defined by a service provider identifier.

17. The method of claim 1, wherein the command messages having a predetermined message type and a fixed length message are selected from a group consisting of:

a command message having a hexadecimal message type code 01 and a one-byte length message for frequency synchronizing the at least one target device;

a command message having hexadecimal message type code 03 and a one-byte length message for setting priority of the plurality of concatenated command messages;

a command message having a hexadecimal type code 05 and a one-byte length message for testing signal reception of the at least one target device;

a command message having a hexadecimal type code 0E and a one-byte length message for setting a thermostat price tier level of the at least one target device;

a command message having hexadecimal type code 14 and a five-byte length message for performing internal maintenance of the at least one target device;

a command message having hexadecimal type code 15 and a one-byte message field for permanently deactivating the at least one target device; and

a command message having hexadecimal type code 15 and a one-byte message field for permanently activating the at least one target device.

18. The method of claim 1, wherein the command messages having a predetermined message type and a variable length message are selected from the group consisting of:

a command message having a hexadecimal type code 02 and a variable-length message for time synchronizing the at least one target device with a control center;

a command message having a hexadecimal type code 08 and a variable-length message for initiating control of the at least one target device for a period of time;

a command message having a hexadecimal type code 09 and a variable-length message for cancelling control of the at least one target device;

a command message having a hexadecimal type code 0A and a variable-length message for cycling the at least one target device off for a cycle period;

a command message having a hexadecimal type code 0B and a variable-length message for modifying a thermostat temperature set-point of the at least one target device;

a command message having a hexadecimal type code 0C and a variable-length message for cycling the at least one target device off for a cycle period depending on temperature limits;

a command message having a hexadecimal type code 0D and a variable-length message for configuring a thermostat state of the at least one target device;

a command message having a hexadecimal type code 10 and a variable-length message for sending configuration data to the at least one target device;

a command message having a hexadecimal type code 16 and a variable-length message for temporarily deactivating the at least one target device;

a command message having a hexadecimal type code 1D and a variable-length message for sending a block of data to the at least one target device;

a command message having a hexadecimal type code 20 and a variable-length message for sending control information to a capacitor bank controller;

a command message having a hexadecimal type code 2C and a variable-length message for requesting a reply from the at least one target device; and

a command message having a hexadecimal type code 2D and a variable-length message for requesting a reply receipt from the at least one target device.

19. A method for managing a utility load from a master by controlling electrical consumption of electrically powered devices, the method comprising the steps of:

receiving at a target for load control a single variable length load control message according to a communication protocol, wherein the load control message includes the at least one target address and a plurality of unique concatenated command messages as part of the single variable length load control message, each of the plurality of unique concatenated command messages being selected from the set consisting of a command message having a predetermined message type and a fixed length message defined for the predetermined message type and a command message having a predetermined message type and a variable length message corresponding to values in a command message control flag field defined for the predetermined message type; and

transmitting a reply message formed according to the communication protocol to the master utility station from the target after the load control message is received.

20. The method of claim 19 further comprising causing the target to execute the load control commands.

21. The method of claim 19, wherein the plurality of unique concatenated command messages includes a priority command message.

22. The method of claim 19, wherein causing the load control message to be transmitted via a communication network comprises causing the load control message to be transmitted via a wireless communication network, and receiving the reply message via the communication network comprises receiving the reply message via the wireless communication network.

23. The method of claim 22, wherein causing the load control message to be transmitted via the wireless communication network comprises causing the load control message to be transmitted via the wireless communication network at a radio frequency, and receiving a reply message via the communication network comprises receiving the reply message via the wireless communication network at the radio frequency.

24. The method of claim 19, wherein causing the load control message to be transmitted via a communication network comprises causing the load control message to be transmitted via a wired communication network and receiving the reply message via the communication network comprises receiving the reply message via the wired communication network.

25. The method of claim 24, wherein the wired communication network is selected from a group consisting of a power line communication network, a telephone service network and an internet service network.

26. The method of claim 19, further comprising formatting the single variable length load control message and the reply message according to a selected communication interface, the communication interface selected from the group consisting of one-way paging protocols, analog cellular control channel two-way communication protocols, short-message service, digital two-way communication protocols, and serial compliant digital network protocols.

27. The method of claim 19, wherein forming the variable length load control message according to the communication protocol comprises forming the variable length load control message according to a binary byte-oriented communication protocol.

28. The method of claim 19, wherein the plurality of unique concatenated command messages are selected from a group consisting of specific load management messages, configuration messages, maintenance messages, data messages, and customizable messages.

29. The method of claim 19, wherein the plurality of unique concatenated command messages are selected from a group consisting of:

frequency synchronize the at least one target device time synchronize the at least one target device with the control center;

set priority of the plurality of concatenated command messages;

test signal reception of the at least one target device;

initiate control of the at least one target device for a period of time;

cancel control of the at least one target device;

provide under-frequency control of the at least one target device;

provide under-voltage control of the at least one target device;

cycle the at least one target device off for a cycle period;

modify a thermostat temperature set-point of the at least one target device;

set a thermostat limit temperature of the at least one target device;

configure a thermostat state of the at least one target device;

set a thermostat price tier level of the at least one target device;

send data to the at least one target device;

request data from the at least one target device;

log data from the at least one target device;

configure the at least one target device;

perform internal maintenance of the at least one target device;

permanently deactivate the at least one target device;

activate the at least one target device;

temporarily deactivate the at least one target device;

temporarily activate the at least one target device; and

send control information to a capacitor bank controller.

30. The method of claim 19, wherein the at least one target comprises a plurality of end user devices defined as at least one group and the at least one target address comprises at least one group-level address.

31. The method of claim 30, wherein the at least one group comprises at least one load-level group.

32. The method of claim 30, wherein the at least one group comprises at least one geographic area.

33. The method of claim 32, wherein the at least one geographic area is defined by a postal code.

34. The method of claim 32, wherein the geographic area is defined by a service provider identifier.

35. The method of claim 19, wherein the command messages having a predetermined message type and a fixed length message are selected from a group consisting of:

a command message having a hexadecimal message type code 01 and a one-byte length message for frequency synchronizing the at least one target device;

a command message having hexadecimal message type code 03 and a one-byte length message for setting priority of the plurality of concatenated command messages;

a command message having a hexadecimal type code 05 and a one-byte length message for testing signal reception of the at least one target device;

a command message having a hexadecimal type code 0E and a one-byte length message for setting a thermostat price tier level of the at least one target device;

a command message having hexadecimal type code 14 and a five-byte length message for performing internal maintenance of the at least one target device;

a command message having hexadecimal type code 15 and a one-byte message field for permanently deactivating the at least one target device; and

a command message having hexadecimal type code 15 and a one-byte message field for permanently activating the at least one target device.

36. The method of claim 19, wherein the command messages having a predetermined message type and a variable length message are selected from the group consisting of:

a command message having a hexadecimal type code 02 and a variable-length message for time synchronizing the at least one target device with a control center;

a command message having a hexadecimal type code 08 and a variable-length message for initiating control of the at least one target device for a period of time;

a command message having a hexadecimal type code 09 and a variable-length message for cancelling control of the at least one target device;

a command message having a hexadecimal type code 0A and a variable-length message for cycling the at least one target device off for a cycle period;

a command message having a hexadecimal type code 0B and a variable-length message for modifying a thermostat temperature set-point of the at least one target device;

a command message having a hexadecimal type code 0C and a variable-length message for cycling the at least one target device off for a cycle period depending on temperature limits;

a command message having a hexadecimal type code 0D and a variable-length message for configuring a thermostat state of the at least one target device;

a command message having a hexadecimal type code 10 and a variable-length message for sending configuration data to the at least one target device;

a command message having a hexadecimal type code 16 and a variable-length message for temporarily deactivating the at least one target device;

a command message having a hexadecimal type code 1D and a variable-length message for sending a block of data to the at least one target device;

a command message having a hexadecimal type code 20 and a variable-length message for sending control information to a capacitor bank controller;

a command message having a hexadecimal type code 2C and a variable-length message for requesting a reply from the at least one target device; and

a command message having a hexadecimal type code 2D and a variable-length message for requesting a reply receipt from the at least one target device.

37. A method, comprising:

providing a controller for controlling electrical consumption of an electrically powered device; and

providing instructions on operating the controller in accordance with a communication protocol, wherein the instructions include the steps of;

receiving at the controller in communication with a control system of a utility provider a single variable length load control message, the load control message including at least a plurality of unique concatenated command messages as part of the single variable length load control message, each of the plurality of unique concatenated command messages being selected from the set consisting of a command message having a predetermined message type and a fixed length message defined for the predetermined message type and a command message having a predetermined message type and a variable length message corresponding to values in a command message control flag field defined for the predetermined message type;

controlling the device with the controller so as to execute of all of the plurality of unique command messages, thereby managing consumption of electricity of the electrically powered device; and

transmitting a reply message formed according to the communication protocol to the controller of the utility provider from the target after the single variable length load control message is received.

38. An apparatus for managing a utility load by controlling electrical consumption of an electrically powered device, comprising:

means for selecting at least one target for load control and for assigning the at least one target at least one target address;

means for forming a variable length load control message, the variable length load control message including;

a start indicator field indicating a start of the variable length load control message;

a variable length address field including a fixed bit-length portion identifying an address level, and a variable bit-length portion identifying a target address corresponding to the at least one electrically powered device;

a plurality of unique concatenated command messages, each of the plurality of unique concatenated command messages being selected from the set consisting of a command message having a predetermined message type field and fixed length message field for a fixed length message defined by the predetermined message type, and a command message having a message type field for a predetermined message type and a variable length message field corresponding to values in a command message control flag field defined for a message type of the message type field; and

a message terminator field indicating a termination of the variable length load control message; and

means for interfacing with a communication network communicatively coupled to the at least one target, such that the variable length load control message may be transmitted via the communication network to the at least one target for execution of the plurality of unique command messages; and

means for receiving a reply message formed according to the communication protocol at the master utility station from the at least one target after transmission of the load control message.

39. An apparatus for managing a utility load by controlling electrical consumption of an electrically powered device, comprising:

means for receiving a variable length load control message at a target device, the variable length load control message including;

a start indicator field indicating a start of the variable length load control message;

a variable length address field including a fixed bit-length portion identifying an address level, and a variable bit-length portion identifying a target address corresponding to the at least one electrically powered device;

a plurality of unique concatenated command messages, each of the plurality of unique concatenated command messages being selected from the set consisting of a command message having a predetermined message type field and fixed length message field for a fixed length message defined by the predetermined message type, and a command message having a message type field for a predetermined message type and a variable length message field corresponding to values in a command message control flag field defined for a message type of the message type field; and

a message terminator field indicating a termination of the variable length load control message;

means for controlling the target device with the controller so as to execute of all of the plurality of unique command messages, thereby managing consumption of electricity of the electrically powered device; and

means for transmitting a reply message formed according to the protocol to the controller of the utility provider from the target device after the single variable length load control message is received.