METHODS, SYSTEMS, CIRCUITS AND COMPUTER PROGRAM PRODUCTS FOR ELECTRICAL SERVICE DEMAND MANAGEMENT

• US 20080215263A1
• Filed: 06/26/2007
• Published: 09/04/2008
• Est. Priority Date: 03/01/2007
• Status: Active Grant

• Current Assignee: Daniel Flohr
• Original Assignee: Daniel Flohr
• Inventors: Flohr, Daniel
• Granted Patent: US 7,653,443 B2
• Time in Patent Office: Days
• US Class Current: 702/62
• CPC Class Codes: H02J 2310/14 The load or loads being home appliances
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/242 Home appliances

Abstract

Methods of controlling activation of electrical appliances can include reducing overlapping activation time of different electrical appliances located at a single customer location of an electrical service provider during at least one time interval during a day. Related systems, circuits, and computer program products are disclosed.

Claims

1. A method of controlling activation of electrical appliances, the method comprising:

reducing overlapping activation time of different electrical appliances located at a single customer location of an electrical service provider during at least one time interval during a day.

2. A method according to claim 1 wherein reducing overlapping activation time of different electrical appliances comprises:

time-shifting activation of the different electrical appliances into different time intervals during the day.

3. A method according to claim 2 wherein time-shifting activation comprises:

determining a de-activation time for a first electrical appliance, when a second electrical appliance is active, to provide an initial time-shift interval during which the first electrical appliance remains inactive and the second electrical appliance remains active and after which the first electrical appliance is active and the second electrical appliance is inactive.

4. A method according to claim 3 wherein determining comprises determining the de-activation time at a remote system, over a network, external to the single customer location.

5. A method according to claim 3 wherein determining comprises determining the de-activation time at a local system that is at the single customer location.

6. A method according to claim 3 wherein the de-activation time is based on a projected time when the second electrical appliance will become inactive upon reaching an operational limit during the initial time-shift interval.

7. A method according to claim 3 wherein determining a de-activation time comprises:

determining a rate of change of temperature associated with the second electrical appliance when the second electrical appliance is active; and

determining a rate of change of temperature associated with the first electrical appliance when the first electrical appliance is active.

8. A method according to claim 7 further comprising:

determining the rates of change of temperature during off-peak time defined by the electrical service provider.

9. A method according to claim 7 wherein the de-activation time is determined based on an estimated rate of temperature change associated with the first electrical appliance after being deactivated.

10. A method according to claim 6 wherein the estimated rate of temperature change is used to estimate a re-activation time when a temperature input to the first electrical appliance will return to about an initial level based on the estimated rate of temperature change, whereupon the first electrical appliance will be re-activated.

11. A method according to claim 10 wherein the re-activation time is concurrent when the second electrical appliance is inactive.

12. A method according to claim 1 further comprising:

recording activation times of the different electrical appliances without application enable signals respectively associated therewith;

determining times when the different electrical appliances will be activated during the day based on recorded activation times; and

initiating operation of the different electrical appliances to reduce time-overlapped operations thereof.

13. A method according to claim 1 wherein reducing overlapping activation time of different electrical appliances comprises:

enabling a first electrical appliance to be activated during a first time interval; and

disabling a second electrical appliance from being activated during the first time interval and enabled during a second time interval subsequent to the first time interval.

14. A method according to claim 13 wherein enabling comprises:

receiving an indication that the first electrical appliance is to be activated; and

providing an enablement signal to allow electrical power to the first electrical appliance.

15. A method according to claim 13 wherein disabling comprises:

receiving an indication that the second electrical appliance is to be activated; and

de-asserting an enablement signal to prevent electrical power to the second electrical appliance.

16. A method according to claim 13 wherein the time interval comprises a pre-defined time interval defined by the electrical service provider in time-of-use billing.

17. A method of controlling activation of electrical appliances, the method comprising time-shifting activation of different electrical devices into different time intervals during a day at a single location of an electrical service provider in time-of-use billing to the single location.

18. A method controlling activation of electrical appliances comprising:

enabling a first electrical appliance for activation during a first time interval and disabling at least a second electrical appliance from being activated during the first time interval and enabled during a second time interval that is subsequent to the first time interval.

19. A method of remotely controlling electrical appliances used at a customer location comprising:

remotely synchronizing, over a network, enablement for activation of electrical appliances at a residential or commercial location to time-of-use billing time intervals defined by an electrical service provider that provides electricity to the residential or commercial location.

20. A method of controlling electrical appliances used at a customer location, the method comprising:

receiving input indicating environmental parameters associated with use of first and second electrical appliances at the customer location;

asserting a first enable signal, associated with operation of the first electrical appliance, during a first time interval to allow the first electrical appliance to activate to affect at least one of the environmental parameters;

de-asserting the first enable signal before a start of a second time interval immediately subsequent to the first time interval; and

asserting a second enable signal, associated with operation of the second electrical appliance, during the second time interval to allow the second electrical appliance to activate to affect at least another of the environmental parameters.

21. A method according to claim 20 wherein the first electrical appliance has greater priority than the second electrical appliance, the method further comprising:

de-asserting the second enable signal during the first time interval to prevent the second electrical appliance from activating during the first time interval by de-coupling the second electrical appliance from electrical power.

22. A method according to claim 21 wherein de-asserting the second enable signal during the first time interval further comprises:

asserting the second enable signal during a portion of the first time interval to reduce time-overlapping activation of the first and second electrical appliances during the first time interval.

23. A method according to claim 22 wherein asserting the second enable signal during a portion of the first time interval comprises advancing activation of the second enable signal from a start of the second time interval earlier in time closer to start of the first time interval.

24. A method according to claim 20 wherein the time intervals in which the first and second electrical appliances are to be enabled for activation are determined based on current weather conditions, weather forecast, customer preferences, thermostat settings, priorities associated the electrical appliances, electrical service provider priorities and/or historical data associated with performance of the electrical appliances at the customer location.

25. A method according to claim 20 wherein the at least one time interval comprises a pre-defined time interval defined by the electrical service provider.

26. A method according to claim 20 further comprising:

transmitting the input from a local system, at the customer location, over a network to a remote system;

determining, at the remote system, whether the first and/or second electrical appliances are to be enabled or disabled for activation during the first or second time intervals; and

transmitting signals to the local system over the network to enable/disable the first and second electrical appliances.

27. A method according to claim 20 further comprising:

maintaining data at a local system for enabling/disabling of the first and second electrical appliances by the local system if a connection to the remote system over the network is subsequently unavailable.

28. A method according to claim 20 wherein the environmental parameters are external to the first and second electrical appliances, the method further comprising:

receiving an indication that a transient electrical appliance is active;

de-asserting the first and/or second enable signals while the transient electrical appliance is active; and

asserting the first and/or second enable signals responsive to the transient electrical appliance becoming inactive.

29. A method according to claim 28 wherein the first electrical appliance comprises a heat pump or an air conditioner and the second electrical appliance comprises a hot water heater and the transient electrical appliance comprises a clothes dryer, oven, or range the method further comprising:

de-asserting the first and second enable signals to prevent activation of the heat pump and hot water heater responsive to receiving the indication that the clothes dryer, oven, or range has been activated; and

asserting the first and second enable signals to allow activation of the heat pump and hot water heater responsive to receiving an indication that the clothes dryer, oven, or range has been de-activated.

30. A method according to claim 28 wherein the first electrical appliance comprises a heat pump and the second electrical appliance comprises a hot water heater where the hot water heater is a lower priority electrical appliance than the heat pump, and the transient electrical appliance comprises a clothes dyer or oven, the method further comprising:

de-asserting the second enable signal to prevent activation of the hot water heater responsive to receiving the indication that the clothes dyer or oven has been activated; and

asserting the second enable signal to allow activation of the hot water heater responsive to receiving an indication that the clothes dyer or oven has been de-activated.

31. A controller for controlling electrical appliances used at a customer location, comprising:

a processor circuit configured to reduce overlapping activation time of different electrical appliances located at a single customer location of an electrical service provider during at least one time interval during a day.

32. A controller according to claim 31 wherein the processor circuit is further configured to receive input indicating environmental parameters associated with use of first and second electrical appliances at the customer location, and configured to assert a first enable signal, associated with operation of the first electrical appliance, during a first time interval to allow the first electrical appliance to activate to affect one of the environmental parameters, and configured to de-assert the first enable signal before a start of a second time interval immediately subsequent to the first time interval, and configured to assert a second enable signal, associated with operation of the second electrical appliance, during the second time interval to allow the second electrical appliance to activate to affect another of the environmental parameters.

33. A controller according to claim 32 wherein the processor circuit is further configured to transmit the input from a local system at the customer location over a network to a remote system.

34. A method of monitoring electrical appliances used at a customer location comprising:

remotely synchronizing, over a network, enablement for activation of electrical appliances at a residential or commercial location to time-of-use billing time intervals defined by an electrical service provider that provides electricity to the residential or commercial location;

recording parameters associated with performance of the electrical appliances; and

providing at least one service indicator associated with the electrical appliances based on the recorded parameters.

35. A method according to claim 34 wherein at least one service indicator comprises a filter change indicator, an electrical appliance maintenance indicator;

and/or electrical appliance service indicator.

36. A method according to claim 35 wherein if the recorded parameters indicate a predetermined passage of time, predetermined number of heating/cooling cycles, and/or predetermined date the service indicator comprises a filter change indicator or an electrical appliance maintenance indicator.

37. A method according to claim 35 wherein if the recorded parameters indicate a change in efficiency of at least one electrical appliance the service indicator comprises the electrical appliance service indicator.

38. A method according to claim 35 wherein the service indicator comprises an e-mail, text message, voice message, facsimile, postage mail, and/or text included on an computer displayable document.

39. A computer program product for controlling activation of electrical appliances comprising:

a computer readable medium having computer readable program code embodied therein, the computer readable program product comprising;

computer readable program code configured to reduce overlapping activation time of different electrical appliances located at a single customer location of an electrical service provider during at least one time interval during a day.

40. A computer program product according to claim 39 wherein the computer readable program code configured to reduce overlapping activation time of different electrical appliances comprises:

computer readable program code configured to time-shift activation of the different electrical appliances into different time intervals during the day.

41. A computer program product according to claim 40 wherein the computer readable program code configured to time-shift activation comprises:

computer readable program code configured to determine a de-activation time for a first electrical appliance, when a second electrical appliance is active, to provide an initial time-shift interval during which the first electrical appliance remains inactive and the second electrical appliance remains active and after which the first electrical appliance is active and the second electrical appliance is inactive.

42. A computer program product according to claim 41 wherein the computer readable program code configured to determine comprises computer readable program code configured to determine the de-activation time at a remote system, over a network, external to the single customer location.

43. A computer program product according to claim 41 wherein the computer readable program code configured to determine comprises computer readable program code configured to determine the de-activation time at a local system that is at the single customer location.

44. A computer program product according to claim 41 wherein the de-activation time is based on a projected time when the second electrical appliance will become inactive upon reaching an operational limit during the initial time-shift interval.

45. A computer program product according to claim 41 wherein the computer readable program code configured to determine a de-activation time comprises:

computer readable program code configured to determine a rate of change of temperature associated with the second electrical appliance when the second electrical appliance is active; and

computer readable program code configured to determine a rate of change of temperature associated with the first electrical appliance when the first electrical appliance is active.

46. A computer program product according to claim 45 further comprising:

computer readable program code configured to determine the rates of change of temperature during off-peak time defined by the electrical service provider.

47. A computer program product according to claim 45 wherein the de-activation time is determined based on an estimated rate of temperature change associated with the first electrical appliance after being deactivated.

48. A computer program product according to claim 44 wherein the estimated rate of temperature change is used to estimate a re-activation time when a temperature input to the first electrical appliance will return to about an initial level based on the estimated rate of temperature change, whereupon the first electrical appliance will be re-activated.

49. A computer program product according to claim 48 wherein the re-activation time is concurrent when the second electrical appliance is inactive.

50. A computer program product according to claim 39 further comprising:

computer readable program code configured to record activation times of the different electrical appliances without application enable signals respectively associated therewith;

computer readable program code configured to determine times when the different electrical appliances will be activated during the day based on recorded activation times; and

computer readable program code configured to initiate operation of the different electrical appliances to reduce time-overlapped operations thereof.

51. A computer program product according to claim 39 wherein the computer readable program code configured to reduce overlapping activation time of different electrical appliances comprises:

computer readable program code configured to enable a first electrical appliance to be activated during a first time interval; and

computer readable program code configured to disable a second electrical appliance from being activated during the first time interval and enabled during a second time interval subsequent to the first time interval.

52. A computer program product according to claim 51 wherein the computer readable program code configured to enable comprises:

computer readable program code configured to receive an indication that the first electrical appliance is to be activated; and

computer readable program code configured to provide an enablement signal to allow electrical power to the first electrical appliance.

53. A computer program product according to claim 51 wherein the computer readable program code configured to disable comprises:

computer readable program code configured to receive an indication that the second electrical appliance is to be activated; and

computer readable program code configured to de-assert an enablement signal to prevent electrical power to the second electrical appliance.

54. A computer program product according to claim 51 wherein the time interval comprises a pre-defined time interval defined by the electrical service provider in time-of-use billing.

55. A computer program product for controlling activation of electrical appliances, the computer program product comprising:

a computer readable medium having computer readable program code embodied therein, the computer readable program product comprising;

computer readable program code configured to time-shift activation of different electrical devices into different time intervals during a day at a single location of an electrical service provider in time-of-use billing to the single location.

56. A system for controlling activation of electrical appliances at a remote single customer location comprising:

a server configured to provide a computer displayable document for access by a customer, the document configured to receive input data associated with the activation of electrical appliances at the location; and

an electrical appliance management server, coupled to the server, configured to receive activation request signals over a network from the remote location indicating requests for activation the electrical appliances at the location, and configured to transmit activation enablement signals over the network to the remote location.

57. A system according to claim 56 further comprising:

a maintenance server, coupled to the electrical appliance management server, configured to record activations of the electrical appliances at the remote location and to determine a service indicator associated with the electrical appliances based on the recorded parameters comprising a filter change indicator, an electrical appliance maintenance indicator; and

/or electrical appliance service indicator.

58. A system according to claim 56 wherein if the recorded parameters indicate a predetermined passage of time, predetermined number of heating/cooling cycles, and/or predetermined date the service indicator comprises a filter change indicator or an electrical appliance maintenance indicator.

59. A system according to claim 57 wherein the maintenance server is further configured to transmit the service indicator to a customer specified address comprising and e-mail address, a voice message box, and/or a telephone number.

60. A computer program product for controlling activation of electrical appliances, the computer program product comprising:

a computer readable medium having computer readable program code embodied therein, the computer readable program product comprising;

computer readable program code to provide a computer displayable document for access by a customer, the document configured to receive input data associated with the activation of electrical appliances at the location; and

computer readable program code to receive activation request signals over a network from the remote location indicating requests for activation the electrical appliances at the location, and configured to transmit activation enablement signals over the network to the remote location.