System and method for managing energy consumption

• US 9,640,993 B2
• Filed: 10/27/2013
• Issued: 05/02/2017
• Est. Priority Date: 10/26/2012
• Status: Active Grant

• Current Assignee: Schneider Electric Industries SAS (Schneider Electric SE)
• Original Assignee: Schneider Electric Industries SAS (Schneider Electric SE)
• Inventors: Pai, Rohit
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Chowdhuri, Swarna N
• Application Number:
  US14/064,144
• Publication Number:
  US 20140117758A1
• Time in Patent Office: 1,283 Days
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• 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 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: H02J 3/32 using batteries with converting means
• 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
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

A control unit with data analyzer is connected to database and configured to receive user inputs such as time driven mode, supply driven mode and automatic mode and operate the system with respect to the selected mode, tariff opted and user input commands, and signals the storage unit to get charged from the input source or to supply power to all the lines or to the selected lines from storage unit. The control unit during the time when energy prices are less, signals to charge the storage unit and supplies power to all appliances through the input source and during the time when energy prices are more, signals to shut off the non critical loads and utilize the charged power from storage unit to selected lines.

Claims

1. A system for managing energy consumption comprising:

a utility interface module configured for receiving power from a power grid and supplying power to distribution lines associated with the system;

a storage unit charged from the power grid and in electronic communication with the distribution lines for supplying power to the distribution lines;

a user interface module for receiving user inputs; and

,

a control unit in operative communication with the utility interface module, the storage unit, and the user interface module, said control unit configured for;

receiving inputs through the user interface module to operate in one of a plurality of operational modes, based on the manner in which tariff information, including tariffs in the form of rates for peak period, off-peak period and shoulder period time slabs, is obtained, and, signaling said storage unit;

a) to charge from said power grid, or, b) to supply power to the distribution lines from said storage unit;

during the time when said tariffs are below a predetermined rate, signaling to charge the storage unit and supplying power to said distribution lines through said power grid; and

, during the time when said tariffs are at least at said predetermined rate, signaling to shut off power transmission through said utility interface module to selected distribution lines and utilize the charge from said storage unit to supply power said selected distribution lines; and

,

continuously receiving information that the time slab is one of peak period, off-peak period and shoulder period, from the power grid through the utility interface module, and signaling to control power distribution of the storage unit based on;

     1) a subsequent time slab after the current time slab,

     2) available charge in the storage unit, and,

     3) the load condition in the distribution lines.

2. The system of claim 1, wherein the plurality of operational modes includes a time driven mode and a supply driven mode, and in the time driven mode, the control unit reads the tariff information entered by the user through the user interface, and in the supply driven mode, the control unit reads the tariff information provided from the power grid.

3. The system of claim 2, wherein the plurality of operational modes includes an automatic mode, and in the automatic mode, the control unit dynamically reads the tariff information from the power grid when there is communication between the power grid and the control unit.

4. The system of claim 3, additionally comprising a database in operative communication with the control unit, and wherein in the automatic mode, said control unit automatically calculates the tariff information by analyzing the historical data in the database, when communication does not exist between the power grid and the control unit.

5. The system of claim 4, wherein when the historical data is not present in the database and the control unit is not in communication with the power grid, the control unit shifts to the time driven mode.

6. The system of claim 1, additionally comprising a storage interface module for measuring electrical parameters of the storage unit, and wherein said control unit obtains the power tariff information from the power grid and transfers data between the control unit, storage interface module, user interface module, and the database.

7. The system of claim 1, wherein during the off peak period, said control unit, signals to charge the storage unit and the distribution lines are powered through the power grid.

8. The system of claim 1, wherein the distribution lines include critical and non-critical lines, and during the peak period, said control unit signals to shut off the non critical lines and shift all of the distribution lines to be powered by the storage unit, and, signals to shift the distribution lines back to the power grid when the charge in the storage unit is below a predetermined threshold.

9. The system of claim 1, wherein during the shoulder period, said control unit signals the utility interface module to:

1) charge the storage unit if the subsequent time slab is peak period, and,

     2) to drive the distribution lines from the charge in the storage unit, if the subsequent time slab is off-peak period.

10. The system of claim 8, wherein said control unit is further configured for line level scheduling and causing turning off of the non-critical distribution lines during the time when said tariffs are at least at the predetermined rate.

11. The system of claim 8, wherein said critical distribution lines drive light loads and heavy loads.

12. The system of claim 1, additionally comprising an event manager in operative communication with the control unit, the event manager configured for registering the events and communicating said events to users.

20. The system of claim 9, wherein the subsequent time slab includes the next time slab.

13. A method for managing energy consumption comprising:

receiving power from a utility source;

supplying the received power through distribution lines;

charging a storage unit through the power received from the utility source;

supplying power to the distribution lines;

configuring an energy consumption management system including a control unit configured to receive inputs to operate in one of a plurality of operational modes, based on the manner in which tariff information of rates for peak period, off-peak period, and shoulder period time slabs is obtained;

receiving information that the time slab information is one of peak period, off peak period and shoulder period, from the utility source, through a utility interface module;

identifying;

     1) the operational mode selected by a user and input into a user interface module, and,

     2) the current time slab from the utility source; and

,

signaling through said control unit to charge or discharge the storage unit based on the mode selected, the subsequent time slab, available charge in the storage unit, and the load condition in the distribution lines.

14. The method of claim 13, additionally comprising:

establishing communication between the control unit, the storage unit, user input devices and a database.

15. The method of claim 13, additionally comprising:

calculating electricity charges by analyzing consumption patterns based on the charge in the storage unit and the load conditions in the distribution lines.

16. The method of claim 15, wherein the electricity charges are in the form of a payable invoice.

17. The method of claim 13, wherein the subsequent time slab includes the next time slab.

18. The method of claim 14, wherein the operational mode includes:

a time driven mode where the tariff information is provided by a user to the user interface module;

a supply driven mode where the tariff information is provided by a utility to the user interface module; and

,

an automatic mode where either;

     1) the tariff information is provided by a utility to the user interface module;

or,

     2) if the tariff information is not available from the utility, the tariff is obtained from historical tariff data from the database and provided to the user interface module.

19. The method of claim 13, wherein the utility source includes at least one of a power grid and an alternate power source.