POWER MANAGEMENT SYSTEM, POWER MANAGEMENT METHOD, AND UPPER POWER MANAGEMENT APPARATUS

• US 20140236377A1
• Filed: 09/04/2012
• Published: 08/21/2014
• Est. Priority Date: 09/26/2011
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Joko, Shingo
• Granted Patent: US 10,115,169 B2
• Time in Patent Office: Days
• US Class Current: 700/295
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 13/00004 characterised by the power network being locally controlled
• CPC Class Codes: H02J 13/00007 using the power network as support for the transmission
• CPC Class Codes: H02J 2310/12 The local stationary network supplying a household or a building
• 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: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/50 Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 40/121 using the power network as support for the transmission

Abstract

A power management system comprises a plurality of HEMSs 10 and a CEMS 40. The CEMS 40 transmits, to a power company 60, configuration information of the plurality of consumers 70 managed by the CEMS 40. The power curtailment signal (DR; Demand Response) transmitted from the power company 60 to the CEMS 40 is determined in accordance with the configuration information. The upper power management apparatus transmits, to each HEMS 10, reduction information including an amount of power that should be reduced in each consumer 70 in response to a power curtailment signal transmitted from the power company 60 after transmitting the configuration information.

Claims

1. A power management system comprising a plurality of lower power management apparatuses each of which is provided for each of a plurality of consumers and an upper power management apparatus that manages the plurality of lower power management apparatuses, wherein

the upper power management apparatus transmits, to a power company that manages a power grid, configuration information of the plurality of consumers managed by the upper power management apparatus, and

the upper power management apparatus transmits, to each lower power management apparatus, reduction information including an amount of power that should be reduced in each consumer in response to a power curtailment signal transmitted from the power company after transmitting the configuration information.

2. The power management system according to claim 1, wherein

the power curtailment signal is determined by the power company in accordance with the configuration information.

3. The power management system according to claim 2, wherein

the power curtailment signal includes an amount of power that should be reduced from an amount of power currently consumed by a load connected to the power grid.

4. The power management system according to claim 3, wherein

the configuration information is any one of the number of the lower power management apparatuses managed by the upper power management apparatus, the number of consumers managed by the upper power management apparatus, the number of residents of a consumer managed by the upper power management apparatus, the location of a lower power management apparatus managed by the upper power management apparatus, the location of a consumer managed by the upper power management apparatus, an area of a region managed by the upper power management apparatus, an amount of power that can be supplied by a dispersed power source provided within the consumer managed by the upper power management apparatus, a predicted amount of power that can be supplied by the dispersed power source provided within the consumer managed by the upper power management apparatus, and a predicted amount of power consumed by the load provided within the consumer managed by the upper power management apparatus.

5. The power management system according to claim 3, wherein

the upper power management apparatus transmits, to each lower power management apparatus, a notification request for requesting a notification of an amount of power that can be reduced from power currently consumed for each category to which a load connected to each lower power management apparatus belongs, in response to a power curtailment signal transmitted from a power company that manages a power grid,

the lower power management apparatus transmits, to the upper power management apparatus, reducibility information for each of the categories including the amount of the power that can be reduced from the power currently consumed in response to the notification request, and

the upper power management apparatus transmits, to each lower power management apparatus, reduction information including the amount of power that should be reduced in each consumer, in response to the power curtailment signal and the reducibility information.

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

each lower power management apparatus transmits, to the upper power management apparatus, power information including an amount of power consumed for each category to which a load connected to each lower power management apparatus belongs, and

the upper power management apparatus transmits, to each lower power management apparatus, the reduction information in response to the power curtailment signal and the power information.

7. The power management system according to claim 5, wherein

the category has a priority, and

the upper power management apparatus decides the amount of power that should be reduced in each consumer so as to preferentially reduce power consumed by a load belonging to a category having a lower priority.

8. The power management system according to claim 4, wherein

the upper power management apparatus decides an amount of power that should be reduced in each consumer to be greater as a maximum value of a contracted current value for each consumer is greater, and the amount of power that should be reduced to be smaller as the maximum value is smaller.

9. A power management method applied to a power management system comprising a plurality of lower power management apparatuses each of which is provided for each of a plurality of consumers and an upper power management apparatus that manages the plurality of lower power management apparatuses, comprising:

a step of transmitting, from the upper power management apparatus to a power company that manages a power grid, configuration information of a plurality of consumers managed by the upper power management apparatus; and

a step of transmitting, from the upper power management apparatus to each lower power management apparatus, reduction information including an amount of power that should be reduced in each consumer, after transmitting the configuration information, in response to a power curtailment signal transmitted from the power company.

10. The power management method according to claim 9, wherein

the power curtailment signal is determined by the power company in accordance with the configuration information.

11. The power management method according to claim 10, wherein

the power curtailment signal includes an amount of power that should be reduced from an amount of power currently consumed by a load connected to the power grid.

12. An upper power management apparatus that manages a plurality of lower power management apparatuses each of which is provided for each of a plurality of consumers, comprising:

a transmission unit that transmits, to a power company that manages a power grid, configuration information of the plurality of consumers managed by the upper power management apparatus, wherein

the transmission unit transmits, to each lower power management apparatus, reduction information including an amount of power that should be reduced in each consumer, in response to a power curtailment signal transmitted from the power company after transmitting the configuration information.

13. The upper power management apparatus according to claim 12, wherein

the power curtailment signal is determined by the power company in accordance with the configuration information.

14. The upper power management apparatus according to claim 13, wherein

the power curtailment signal includes an amount of power that should be reduced from an amount of power currently consumed by a load connected to the power grid.