Energy management system and energy management method

• US 8,612,062 B2
• Filed: 09/07/2010
• Issued: 12/17/2013
• Est. Priority Date: 09/09/2009
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Iino, Yutaka, Taguchi, Yasuhiro, Murayama, Dai
• Primary Examiner(s): Ali, Mohammad
• Assistant Examiner(s): Booker, Kelvin
• Application Number:
  US12/876,478
• Publication Number:
  US 20110060476A1
• Time in Patent Office: 1,197 Days
• Field of Search: 700/295, 700/297, 700/291, 700/22
• US Class Current: 700/297
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: H02J 13/00028 involving the use of Internet protocols
• CPC Class Codes: H02J 2310/58 The condition being electrical
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving

Abstract

According to one embodiment, an energy management system includes an energy supply device and an energy demand device. The energy management system comprises a first device, a second device, storage sections, calculating sections. The first device is applied for the energy supply device. The second device is applied for the energy demand device. The storage sections are included in the first device and the second device, respectively, and store a condition as to comply with an adjustment request of energy supplied from the energy supply device to the energy demand device. The calculating sections are included in the first device and the second device, respectively, and cooperate to execute negotiation function calculating an energy adjustment amount satisfying the condition.

Claims

1. An energy management system including an energy supply device and an energy demand device to which energy is supplied from the energy supply device, the energy management system comprising:

a first energy management device applied for the energy supply device;

a second energy management device applied for the energy demand device;

storage sections which are included in the first energy management device and the second energy management device, respectively, and in which a condition as to comply with an adjustment request of the energy supplied from the energy supply device to the energy demand device is stored; and

calculating sections which are included in the first energy management device and the second energy management device, respectively, and which cooperate to execute a negotiation function calculating an energy adjustment amount satisfying the condition,

wherein the negotiation function performs a bidirectional communication where one device of the first or second energy management devices provides a request condition concerning energy adjusting for another device of the first or second energy management devices and said another device provides a reward condition with respect to the request condition for said one device, and

wherein the energy adjustment amount includes minimum and maximum energy adjustment amounts relating to the request condition and minimum and maximum values relating to the reward condition.

2. The energy management system according to claim 1, further comprising at least one of the energy supply devices and the energy demand devices.

3. The energy management system according to claim 1, wherein

an intermediate layer is between an upper layer to which the energy supply device belongs and a lower layer to which the energy demand device belongs, and

a third energy management device belonging to the intermediate layer executes a communication for the negotiation function between the first energy management device of the upper layer and the second energy management device of the lower layer.

4. The energy management system according to claim 3, further comprising the energy supply devices belong an uppermost layer of a hierarchical structure including the upper layer, the lower layer and the intermediate layer.

5. The energy management system according to claim 3, further comprising the energy demand devices belong a lowermost layer of a hierarchical structure including the upper layer, the lower layer and the intermediate layer.

6. The energy management system according to claim 3, wherein

a first layer is included in a hierarchical structure including the upper layer, the lower layer and the intermediate layer,

the first energy management device belonging to the first layer receives a plurality of pieces of information from the second energy management devices belonging to the second layer being lower than the first layer, and processes the received plurality of pieces of information to update information stored in the storage section of the first energy management device belonging to the first layer based on a processed result.

7. The energy management system according to claim 3, wherein

the condition is data including an energy adjustment request amount requested by the energy supply device, and an adjustable energy amount indicating an energy amount adjustable by the energy demand device,

the data includes an index value indicates a reward corresponding to the energy adjustment amount in a case where an energy adjustment is executed by the energy demand device, and

the third energy management device

receives the energy adjustment request amount from the first energy management device,

determines a distribution of the energy adjustment request amount for the second energy management devices so that a total of energy adjustment amounts when the energy adjustments are executed by the second energy management devices is equal or more than the energy adjustment request amount, and a total of the index values with respect to the energy adjustments executed by the second energy management devices based on the energy adjustment request amount is minimum, and

transmits, to the first energy management device, the total of the index values corresponding to the distribution.

8. The energy management system according to claim 3, wherein

the condition is data including an energy adjustment request amount requested by the energy supply device, and an adjustable energy amount indicating an energy amount adjustable by the energy demand device,

the data includes an index value indicates a reward corresponding to the energy adjustment amount in a case where an energy adjustment is executed by the energy demand device, and

the third energy management device

receives a provideable amount of the index value from the first energy management,

determines a distribution of the index value for the second energy management devices so that the index value corresponding to a total of energy adjustment amounts when the energy adjustments are executed by the second energy management devices is equal or less than the provideable amount, and the total of energy adjustment amounts is maximum, and

transmits, to the first energy management device, an adjustable energy amount corresponding to the distribution of the index value.

9. The energy management system according to claim 1, wherein

the condition is data including an energy adjustment request amount requested by the energy supply device, and an adjustable energy amount indicating an energy amount adjustable by the energy demand device at each time using to numeric values.

10. The energy management system according to claim 9, wherein

the data includes an index value which indicates a reward at each time corresponding to the energy adjustment amount by a numeric value in a case where an energy adjustment is executed by the energy demand device.

11. The energy management system according to claim 10, wherein

the first energy management device obtains the index value indicating the reward corresponding to the energy adjustment amount, when the energy adjustment is executed by the energy demand device.

12. The energy management system according to claim 9, wherein

the data includes, as an attribute value concerning the adjustable energy amount, at least one of:

information of an adjustable amount of an energy consumption of a load in the second energy management device;

information of a shiftable amount of a time when the energy consumption of the load occurs;

information of an adjustable amount of an operation time of the load or an adjustable amount of an accumulated energy of the load;

information indicating a propriety of blocking of the energy consumption of the load; and

information of the energy consumption of the load or an amount of energy to be generated, and an error or an error ratio thereof.

13. The energy management system according to claim 12, wherein

the data includes a predicted value with respect to a time axis as an attribute value.

14. The energy management system according to claim 9, wherein the second energy management device receives information including the energy adjustment request amount from the first energy management device to calculate the energy adjustment amount.

15. An energy management method used in an energy management system including an energy supply device and an energy demand device to which energy is supplied from the energy supply device, wherein

the energy supply device comprises a first energy management device,

the energy demand device comprises a second energy management device, and

the energy management method comprises

storing a condition which complies with an adjustment request of the energy supplied from the energy supply device to the energy demand device in storage sections, the storage sections being included in the first energy management device and the second energy management device, respectively;

and

cooperating to execute negotiation processing calculating an energy adjustment amount satisfying the condition by calculating sections, the calculating sections being included in the first energy management device and the second energy management device, respectively,

the negotiation processing performs a bidirectional communication where one device of the first or second energy management devices provides a request condition concerning energy adjusting for another device of the first or second energy management devices and said another device provides a reward condition with respect to the request condition for said one device, and

the energy adjustment amount includes minimum and maximum energy adjustment amounts relating to the request condition and minimum and maximum values relating to the reward condition.