Electric device, power management system including the electric device, and method for controlling the same

• US 20120078427A1
• Filed: 07/15/2011
• Published: 03/29/2012
• Est. Priority Date: 09/29/2010
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jang, Jae Hwi, Park, Hyun Soo, Park, Young Jin, Shin, Jong Hyun
• Granted Patent: US 8,954,200 B2
• Time in Patent Office: Days
• US Class Current: 700/291
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05F 1/66 Regulating electric power
• CPC Class Codes: H02J 2310/14 The load or loads being home appliances
• CPC Class Codes: H02J 2310/64 The condition being economic, e.g. tariff based load management
• 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: 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 20/00 Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/242 Home appliances
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

A power management apparatus includes an electric device including a plurality of operation algorithm information and power information for each operation level corresponding to each operation algorithm information, and a power management unit to receive power rate information from a power provider, determine an operation level of the electric device on the basis of the received power rate information and power information for each operation level of the electric device, and control an operation of the electric device at the determined operation level. As a result, the power management apparatus performs different operation algorithms according to power rate information, and controls power consumption of the electric device, such that energy efficiency at the user side can be maximized. In response to the changed power rate information, the currently-driven electric device and the electric device to be driven can be driven at the optimum operation level appropriate for their power consumption characteristics.

Claims

1. A power management system comprising:

an electric device including a plurality of operation algorithm information and power information for each operation level corresponding to each operation algorithm information; and

a power management unit to receive power rate information from a power provider, determine an operation level of the electric device on the basis of the received power rate information and power information for each operation level of the electric device, and control an operation of the electric device at the determined operation level.

2. The system according to claim 1, wherein the power information includes maximum power consumption, average power consumption, and an operation time during which power is consumed.

3. The system according to claim 2, wherein the power management unit determines a group of the electric device on the basis of an operation time of the electric device, and determines the operation level on the basis of the group of the electric device.

4. The system according to claim 3, wherein the group includes a first group in which establishing an operation time of the electric device is possible, a second group in which establishing the operation time of the electric device is not possible, and a third group in which establishing the operation time and the operation level of the electric device is not possible.

5. The system according to claim 4, wherein the power management unit reflects the power rate for each operation level and a discomfort degree for each operation level in the deciding of the operation level of the electric device.

6. The system according to claim 5, wherein, if the electric device is in the first group, the power management unit reflects the power rate information, average power consumption for each operation level, an operation time for each operation level, and a discomfort degree for each operation level, thereby deciding the operation level.

7. The system according to claim 6, wherein, if the electric device is in the first group, the power management unit controls the electric device at an operation level decided when the electric device begins to operate, until an operation end time is reached.

8. The system according to claim 6, wherein:

if the electric device is in the first group, the power management unit confirms a variation in power rate information within a predetermined time, and

if the power rate is changed in a low level, the power management unit informs a user of a standby time consumed until the power rate information begins to change.

9. The system according to claim 5, wherein, if the electric device is in the second group, the power management unit calculates an average operation time of the electric device, reflects the calculated average operation time, average power consumption, power rate information, a discomfort degree for each operation level, and thus determines an operation level.

10. The system according to claim 5, wherein, if the electric device is in the second group, the power management unit calculates an average operation time of the electric device, reflects the calculated average operation time, the number of variation times of power rate information contained in the average operation time, average power consumption, and a discomfort degree for each operation level, and thus determines an operation level.

11. The system according to claim 5, wherein the power management unit, if the electric device is in the second group, reflects an operation time from an operation start time point of the electric device into a specific time where the power rate information is changed, power rate information, and a discomfort degree for each operation level, and thus determines the operation level.

12. The system according to claim 5, wherein, if the electric device is in the second group, the power management unit controls the electric device at an operation level decided at the operation start time point of the electric device, and re-decides the operation level at the specific time where the power rate information is changed.

13. The system according to claim 12, wherein the power management unit includes:

a display to display the re-decided operation level; and

a sound unit to audibly output the re-decided operation level.

14. The system according to claim 5, wherein the power management unit, if the electric device is in the third group, informs a user of a time having a minimum power rate for each power rate information.

15. The system according to claim 1, wherein the operation level includes a standby level at which power information is established when the electric device stays in a standby state.

16. The system according to claim 15, wherein the power management unit, if the decided operation level exceeds predetermined allowed instantaneous power or a monthly predetermined power rate, is controlled in the standby level.

17. The system according to claim 15, wherein the power management unit includes:

a display to display a specific time where the power rate information is changed, a changed power rate level, and an operation level assigned to the changed power rate level, when the electric device is controlled in the standby level; and

a sound unit to audibly output the specific time where the power rate information is changed, a changed power rate level, and an operation level assigned to the changed power rate level.

18. The system according to claim 1, wherein the power management unit, if several electric devices are present and the several electric devices are simultaneously driven, decides an operation level according to priority information of the several electric devices.

19. The system according to claim 1, wherein the electric device includes:

a display to display at least one of the decided operation level, an operation time for each operation level, and a power rate for each operation level; and

a sound unit to audibly output at least one of the decided operation level, an operation time for each operation level, and an expected power rate for each operation level.

20. The system according to claim 11, wherein the electric device includes:

an input unit to receive an operation level addition signal as an input, and further receive a function constructing the operation algorithm as an input; and

a controller to additionally establish an operation level corresponding to the added function, and transmit power information of the established operation level to the power management unit.

21. A method for controlling a power management system comprising:

receiving power information for each operation level from an electric device;

determining a group of the electric device;

storing the determined group information and power information for each operation level;

receiving power rate information from a power provider;

determining an operation level of the electric device on the basis of power information and power rate information for each operation level; and

controlling the electric device using an operation algorithm corresponding to the determined operation level.

22. The method according to claim 21, wherein the determining of the group includes:

if the operation time of the electric device is established, determining the electric device to be in a first group;

if the operation time of the electric device is not established, determining the electric device to be in a second group; and

if an operation level and an operation time of the electric device are not established, determining the electric device to be in a third group.

23. The method according to claim 22, wherein the determining of the operation level of the electric device further includes reflecting a discomfort degree for each operation level.

24. The method according to claim 23, wherein the determining of the operation level of the electric device includes:

if the electric device is in the first group, calculating a power rate for each operation level;

reflecting a discomfort degree for each operation level in the power rate for each operation level so as to calculate each level value; and

determining a specific level having a minimum level value to be the operation level.

25. The method according to claim 23, further comprising:

if the electric device is in the second group, controlling the electric device in the range from an operation start time point of the electric device to an operation end time point of electric device at an operation level determined at the operation start time point.

26. The method according to claim 23, further comprising:

if the electric device is in the second group, determining whether power rate information is changed within a predetermined time; and

if the power rate is changed in a low level, informing a user of a standby time consumed until the power rate information begins to change.

27. The method according to claim 23, wherein the determining of the operation level of the electric device includes:

calculating an average operation time of the electric device if the electric device is in the second group;

calculating a power rate for each operation level on the basis of the average operation time, the power rate information, and average power consumption for each operation level;

calculating each level value by reflecting a discomfort degree for each operation level in the power rate for each operation level; and

determining a specific level having a minimum level value to be an operation level.

28. The method according to claim 23, wherein the determining of the operation level of the electric device includes:

calculating an average operation time of the electric device if the electric device is in the second group;

determining the number of variation times of the power rate information during the average operation time;

generating a combination of operation levels corresponding to the number of variation times of the power rate information;

calculating a power rate for each operation level combination;

reflecting a discomfort degree for each operation level in a power rate for each operation level combination so as to calculate each level value; and

determining a specific level having a minimum level value to be an operation level.

29. The method according to claim 23, wherein the determining of the operation level of the electric device includes:

if the electric device is in the second group, calculating a power rate for each operation level during a predetermined time from an operation start time of the electric device to a time where the power rate information begins to change;

reflecting a discomfort degree for each operation level in the power rate for operation level so as to calculate each level value; and

determining a specific level having a minimum level value to be an operation level.

30. The method according to claim 23, wherein the determining of the operation level of the electric device includes:

controlling the electric device in an operation level decided at an operation start time of the electric device, if the electric device is in the second group; and

re-determining the operation level at a time where the power rate information begins to change.

31. The method according to claim 30, further comprising informing a user of the re-determined operation level.

32. The method according to claim 23, further comprising, if the electric device is contained in a third group, informing a user of a predetermined time having a minimum power rate for each power rate information.

33. The system according to claim 21, further comprising:

if the decided operation level exceeds predetermined allowed instantaneous power or a monthly predetermined maximum power rate, controlling the electric device to enter a standby level where the electric device is maintained in a standby state.

34. The system according to claim 33, further comprising:

if several electric devices are present, controlling the several electric devices to enter the standby level in ascending numerical order of priority information.

35. The system according to claim 34, wherein the priority information of the several electric devices are entered and established by a user.

36. The system according to claim 33, further comprising:

when the electric device is controlled in a standby level, indicating a time where the power rate information is changed, the changed power rate information, and an operation level assigned to the changed power rate information.

37. The system according to claim 21, further comprising:

informing a user of at least one of the determined operation level, an operation time for each operation level, and a power rate for each operation level.

38. The system according to claim 21, further comprising:

if an additional operation level of the electric device is established, receiving at least one function constructing an operation algorithm;

generating power information corresponding to the selected function, and establishing/storing an operation level; and

transmitting the additionally-established operation level to a power management unit,

wherein the power management unit updates an operation level of the electric device.

39. The system according to claim 21, further comprising:

if an operation level is entered by a user, controlling an operation of the electric device using an operation algorithm corresponding to the entered operation level.

40. The method according to claim 21, further comprising:

determining a power rate level on the basis of the received power rate information.

41. An electric device comprising:

a communication unit to receive power rate information from a power provider;

a storage unit to store a plurality of operation algorithm information and power information for each operation level corresponding to each of the operation algorithms; and

a controller to determine an operation level of the electric device on the basis of the power rate information and power information for each operation level of the electric device, and control an operation of the electric device using an operation algorithm corresponding to the determined operation level.

42. The electric device according to claim 41, wherein the controller reflects a discomfort degree in the determining of the operation level.

43. The electric device according to claim 41, further comprising:

an input unit to receive an operation level from a user and receive an additional operation level as an input.

44. The electric device according to claim 41, wherein:

the power information includes average power consumption and operation time information, and

the controller, when determining the operation level, receives information indicating whether the operation time is established and performs an operation level decision process corresponding to the information indicating whether the operation level is established.

45. A method for controlling an electric device comprising:

receiving power rate information from a power provider;

determining an operation level on the basis of the power rate information and power information for each pre-stored operation level; and

controlling an operation of the electric device using an operation algorithm corresponding to the determined operation level.

46. The method according to claim 45, wherein the determining of the operation level includes:

determining whether an operation time is established in the power information;

if the operation time is established in the power information, calculating a power rate for each operation level;

reflecting a discomfort degree for each operation level in the power rate for each operation level, and calculating each level value; and

determining an operation level having a minimum level value to be an operation level.

47. The method according to claim 45, wherein the determining of the operation level includes:

determining whether the operation time is established in the power information;

calculating an average operation time, if the operation time is not established in the power information;

calculating a power rate for each operation level on the basis of the average operation time, the power rate information, and average power consumption for each operation level;

reflecting a discomfort degree for each operation level into the power rate for each operation level so as to calculate each level value; and

determining an operation level having a minimum level value to be an operation level.