ON-DEMAND POWER CONTROL SYSTEM, ON-DEMAND POWER CONTROL SYSTEM PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM RECORDING THE SAME PROGRAM

• US 20140074307A1
• Filed: 07/13/2012
• Published: 03/13/2014
• Est. Priority Date: 07/13/2011
• Status: Abandoned Application

• Current Assignee: Nitto Denko Corporation
• Original Assignee: Nitto Denko Corporation
• Inventors: Matsuyama, Takashi, Kato, Takekazu, Yuasa, Kenji
• Application Number:
  US13/997,702
• Publication Number:
  US 20140074307A1
• Time in Patent Office: Days
• US Class Current: 700/295
• CPC Class Codes: G06Q 50/06 Energy or water supply
• 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: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• CPC Class Codes: H04L 12/2827 Reporting to a device within the home network; wherein the reception of the information reported automatically triggers the execution of a home appliance functionality
• 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 20/20 End-user application control systems
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/242 Home appliances

Abstract

A dynamic priority control apparatus of the present invention is characterized by including means that calculate a difference between instantaneous power of an initial target value and actual instantaneous power, initial target value updating means that take into account the difference, calculating priorities of electrical devices means based on electrical device property class data, and power arbitration means that determines the electrical devices to be supplied power based on the total value of the consumed power and the priorities of the electrical devices.

Claims

1. An on-demand power control system comprising a commercial power source, a plurality of electrical devices, a smart tap connected to the electrical devices, a dynamic priority control apparatus which includes a memory and controls power supply to the electrical devices, and a network to which the dynamic priority control apparatus is connected via the smart tap,

wherein the dynamic priority control apparatus includes initial target value updating means for allocating a difference between instantaneous power with an initial target value and actual instantaneous power to subsequent instantaneous power with an initial target value to calculate an updated initial target value, comparing the updated initial target value with maximum instantaneous power, if the updated initial target value is smaller, updating the subsequent instantaneous power with the initial target value to have the updated initial target value, and if the update initial target value is larger, updating the instantaneous power with the initial target value to be the maximum instantaneous power and setting the maximum instantaneous power as the updated initial target value and

power arbitration means for calculating a total value of power consumed by an electrical device having transmitted a power request message and an electrical device in operation for a time when the power request message is received from the smart tap, calculating priorities of the electrical devices based on electrical device property class data, in which electrical devices are classified into classes according to properties of methods for supplying power to an electrical device, comparing the total value of the consumed power with the updated initial target value, if the total value of the consumed power is smaller, supplying power to the electrical device having performed transmission, if the total value of the consumed power is larger, calling up the priorities from the memory to select an electrical device having the minimum priority, determining which of the properties the electrical device corresponds to, with reference to the electrical device property class data, and performing arbitration based on the priorities of the electrical devices according to the property, to which the electrical device corresponds.

2. The on-demand power control system according to claim 1, wherein the instantaneous power is consumed power which is obtained by adding up consumed power in each of intervals of a minimum control interval t to obtain a total value and averaging the total value.

3. The on-demand power control system according to claim 2, wherein the minimum control interval t is 5 to 10 minutes.

4. The on-demand power control system according to claim 3, wherein information to be processed by the initial target value updating means is the instantaneous power, and information to be processed by the power arbitration means is the consumed power.

5. The on-demand power control system according to claim 4, wherein a power use plan in which the initial target value is created based on a user'"'"'s pattern of power consumption is created using one of a fixed rate reduction plan, a peak reduction plan, and a cost reduction plan.

6. The on-demand power control system according to claim 5, wherein an initial target value T₀(t) (W) which is created using the fixed rate reduction plan is given by equations (1) and (2):

7. The on-demand power control system according to claim 5, wherein an initial target value created in the peak reduction plan is created by reducing an initial target value only during on-peak power use hours in the power use plan.

8. The on-demand power control system according to claim 5, wherein an initial target value created in the cost reduction plan is created by reducing an initial target value in the power use plan according to power costs.

9. The on-demand power control system according to claim 6, wherein the dynamic priority control apparatus controls power supply to the electrical devices such that the ceiling is not exceeded and the maximum instantaneous power is not exceeded.

10. The on-demand power control system according to claim 9, wherein the instantaneous power with the initial target value, the actual instantaneous power, and the electrical device property class data are stored in the memory before the dynamic priority control apparatus is activated.

11. The on-demand power control system according to claim 10, wherein a method for allocating the difference to be allocated to the subsequent instantaneous power with the initial target value is one of an equal difference allocation method that equally allocates the difference and an instantaneous power allocation method that allocates the difference to only one immediately succeeding instantaneous power.

12. The on-demand power control system according to claim 11, wherein the electrical device property class data is segmented according to properties of methods for supplying power to an adjustable electrical device, a suspendable electrical device, and a waitable electrical device among electrical devices.

13. The on-demand power control system according to claim 12, wherein the electrical device property data has a segment for which a user can arbitrarily select a device in order to ensure a safe and comfortable life in addition to segments for the properties of the methods for supplying power to an adjustable electrical device, a suspendable electrical device, and a waitable electrical device among the electrical devices.

14. The on-demand power control system according to claim 12, wherein the adjustable property is a property which allows change of power supplied during operation, the waitable property is a property which allows waiting for power supply at startup, and the suspendable property is a property which allows suspension of power supply during operation.

15. The on-demand power control system according to claim 14, wherein electrical devices having the adjustable property include a notebook PC, a boiler, a toilet seat with a warm-water shower feature, a microwave oven, a heater air conditioner, a refrigerator, a TV, and a dryer.

16. The on-demand power control system according to claim 14, wherein electrical devices having the waitable property include a notebook PC, a boiler, a toilet seat with a warm-water shower feature, a microwave oven, a dishwasher, a rice cooker, and a toaster.

17. The on-demand power control system according to claim 14, wherein electrical devices having the suspendable property include a notebook PC, a boiler, a heater air conditioner, a refrigerator, a dishwasher, a rice cooker, a copying machine, and an electric pot.

18. The on-demand power control system according to claim 14, wherein electrical devices not having the adjustable, suspendable, and waitable properties include a gas detector, a respirator, and a network device such as a router.

19. The on-demand power control system according to claim 12, wherein the electrical device property class data is composed of respective parts for eight classes.

20. An on-demand power control system wherein a dynamic priority control apparatus according to claim 2 further comprises continuous monitoring means for monitoring consumed power at all times.

21. The on-demand power control system according to claim 20, wherein the continuous monitoring means controls power supply such that overall consumed power falls below the maximum instantaneous power without waiting for a lapse of the minimum control interval τ

if the overall consumed power exceeds the maximum instantaneous power for a fixed period d or longer.

22. The on-demand power control system according to claim 21, wherein the fixed period d is 0.5 to 2 seconds.

23. The on-demand power control system according to claim 22, wherein the continuous monitoring means calculates a total value of power consumed by electrical devices in operation, calculates priorities of the electrical devices based on electrical device property class data, in which electrical devices are classified into classes according to three types of properties, compares the total value of the consumed power with the maximum instantaneous power, if the total value of the consumed power is smaller, ends processing, if the total value of the consumed power is larger, selects an electrical device having the minimum priority, determines which of the three types of properties the electrical device corresponds to, with reference to the electrical device property class data, and selects a device having the minimum priority according to the property, to which the electrical device corresponds.

24. A program for causing a computer to operate as a dynamic priority control apparatus in an on-demand power control system, the on-demand power control system comprising a commercial power source, a plurality of electrical devices, a smart tap connected to the electrical devices, the dynamic priority control apparatus which includes a memory and controls power supply to the electrical devices, and a network to which the dynamic priority control apparatus is connected via the smart tap, the program causing the computer to execute, by the dynamic priority control apparatus,

a process of allocating a difference between instantaneous power with an initial target value and actual instantaneous power to subsequent instantaneous power with an initial target value to calculate an updated initial target value, comparing the updated initial target value with maximum instantaneous power, if the updated initial target value is smaller, updating the subsequent instantaneous power with the initial target value to have the updated initial target value, and if the update initial target value is larger, updating the instantaneous power with the initial target value to be the maximum instantaneous power and setting the maximum instantaneous power as the updated initial target value and

a process of calculating a total value of power consumed by an electrical device having transmitted a power request message and an electrical device in operation for a time when the power request message is received from the smart tap, calculating priorities of the electrical devices based on electrical device property class data, in which electrical devices are classified into classes according to three types of properties, comparing the total value of the consumed power with the updated initial target value, if the total value of the consumed power is smaller, supplying power to the electrical device having performed transmission, if the total value of the consumed power is larger, calling up the priorities from the memory to select an electrical device having the minimum priority, determining which of the three types of properties the electrical device corresponds to, with reference to the electrical device property class data, and performing arbitration based on the priorities of the electrical devices according to the property, to which the electrical device corresponds.

25. The program executed by the computer according to claim 24, wherein the instantaneous power is consumed power that is obtained by adding up consumed power in each of intervals of a minimum control interval τ

to obtain a total value and averaging the total value.

26. The program executed by the computer according to claim 25, wherein the minimum control interval τ

is 5 to 10 minutes.

27. The program executed by the computer according to claim 26, wherein information to be processed by the initial target value updating processing is the instantaneous power, and information to be processed by the arbitration processing depend on the priorities is the consumed power.

28. The program executed by the computer according to claim 24, wherein power supply to the electrical devices is controlled such that the upper limit for integral power consumption over a fixed period is not exceeded and the maximum instantaneous power is not exceeded.

29. The program executed by the computer according to claim 28, wherein the electrical device property class data is segmented according to adjustable, suspendable, and waitable properties of electrical devices.

30. The program executed by the computer according to claim 29, wherein the electrical device property data has a segment for which a user can arbitrarily select a device in order to ensure a safe and comfortable life in addition to segments for the properties of methods for supplying power to an adjustable electrical device, a suspendable electrical device, and a waitable electrical device among the electrical devices.

31. The program executed by the computer according to claim 29, wherein the adjustable property is a property which allows change of power supplied during operation, the waitable property is a property which allows waiting for power supply at startup, and the suspendable property is a property which allows suspension of power supply during operation.

32. The program executed by the computer according to claim 31, wherein electrical devices having the adjustable property include a notebook PC, a boiler, a toilet seat with a warm-water shower feature, a microwave oven, a heater air conditioner, a refrigerator, a TV, and a dryer.

33. The program executed by the computer according to claim 31, wherein electrical devices having the waitable property include a notebook PC, a boiler, a toilet seat with a warm-water shower feature, a microwave oven, a dishwasher, a rice cooker, and a toaster.

34. The program executed by the computer according to claim 31, wherein electrical devices having the suspendable property include a notebook PC, a boiler, a heater air conditioner, a refrigerator, a dishwasher, a rice cooker, a copying machine, and an electric pot.

35. The program executed by the computer according to claim 30, wherein electrical devices not having the adjustable, suspendable, and waitable properties include a gas detector, a respirator, and a network device such as a router.

36. A computer-readable recording medium recording a program according to claim 24.

37. A computer-readable recording medium recording a program according to claim 25.

38. A computer-readable recording medium recording a program according to claim 28.

39. A computer-readable recording medium recording a program according to claim 30.