Mobile micro-grid power system controller and method

• US 9,368,973 B2
• Filed: 02/27/2014
• Issued: 06/14/2016
• Est. Priority Date: 04/24/2009
• Status: Active Grant

• Current Assignee: Hunter Defense Technologies, Inc. (CB-HDT Holdings, Inc.)
• Original Assignee: Hunter Defense Technologies, Inc. (CB-HDT Holdings, Inc.)
• Inventors: Creed, John L.
• Primary Examiner(s): JARRETT, RYAN A
• Application Number:
  US14/191,555
• Publication Number:
  US 20140175881A1
• Time in Patent Office: 838 Days
• Field of Search: None
• US Class Current: 1/1
• 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 2310/60 Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: H02J 3/28 Arrangements for balancing of the load in a network by storage of energy
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• 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

Abstract

Methods and control apparatus are presented for controlling supply of electrical power to a micro-grid power system, in which a master controller automatically rebalances the micro-grid by activating and deactivating individual power supplies to preferentially activate non-fuel consuming power supplies and deactivate fuel consuming power supplies so as to minimize fuel consumption for the micro-grid power system.

Claims

1. A stand-alone micro-grid power system, comprising:

a plurality of loads disconnected from utility power and individually capable of consuming electrical power when activated;

a plurality of power supplies disconnected from utility power and operatively coupled with the at least one load and with one another to form a micro-grid, at least some of the power supplies being operatively coupled to provide electrical power to the micro-grid when activated; and

a master controller comprising at least one processor, an electronic memory, and a communications interface, the at least one processor being configured to automatically control the provision of electrical power in the micro-grid power system for a requested or anticipated change in load consumption and/or supply capability by;

obtaining a plurality of consumption profiles via the communications interface, each individual consumption profile corresponding to a particular one of the plurality of loads,

determining a micro-grid load profile for the micro-grid power system based at least partially on the consumption profiles,

determining an active reserve power level for the micro-grid power system based at least partially on the consumption profiles,

obtaining power supply information including at least one power supply profile and power supply data for at least some of the power supplies via the communications interface, and

setting an activation state of one or more of the plurality of power supplies based at least partially on the power supply information, the determined micro-grid load profile and the determined active reserve power level.

2. The stand-alone micro-grid power system of claim 1, wherein the individual consumption profiles specify resistive, inductive and/or capacitive power or energy consumption for a start or inrush state and a run state for the corresponding load.

3. The stand-alone micro-grid power system of claim 2, wherein the individual consumption profiles indicate a base load level and a required reserve capacity load level for the corresponding load.

4. The stand-alone micro-grid power system of claim 1, wherein the individual consumption profiles indicate a base load level and a required reserve capacity load level for the corresponding load.

5. The stand-alone micro-grid power system of claim 1, wherein the individual consumption profiles are requested by the at least one processor via the communications interface automatically in response to requested or anticipated change in load consumption and/or supply capability.

6. The stand-alone micro-grid power system of claim 5, wherein the individual consumption profiles are requested by the at least one processor via the communications interface from the corresponding load.

7. The stand-alone micro-grid power system of claim 5, wherein the individual consumption profiles are requested by the at least one processor via the communications interface from a load control device coupled with the corresponding load.

8. The stand-alone micro-grid power system of claim 1, wherein the master controller receives the at least one individual consumption profile with a requested change in load consumption via the communications interface from the corresponding load or from a load control device coupled with the corresponding load.

9. The stand-alone micro-grid power system of claim 1, wherein the individual power supply profile for a given power supply specifies at least one of a power efficiency profile, an output profile, and an energy profile as a function of at least one of load and operating condition for the given power supply.

10. The stand-alone micro-grid power system of claim 9, wherein the power supply data for the given power supply specifies one of a running or stopped status, an online or offline status, a voltage, a wattage, a size, a type, and a model for the given power supply.

11. The stand-alone micro-grid power system of claim 1, wherein the power supply data for a given power supply specifies one of a running or stopped status, an online or offline status, a voltage, a wattage, a size, a type, and a model for the given power supply.

12. The stand-alone micro-grid power system of claim 1, wherein the individual power supply profiles or data are requested by the at least one processor via the communications interface automatically in response to requested or anticipated change in load consumption and/or supply capability.

13. The stand-alone micro-grid power system of claim 1, wherein the master controller is operative to start, stop or selectively delay activation of a given one of the plurality of mobile loads based at least partially on the consumption profile corresponding to the given one of the plurality of mobile loads.

14. A master controller for a stand-alone micro-grid power system with a plurality of loads and a plurality of power supplies disconnected from utility power, the master controller comprising:

a communications interface operative to exchange communications messaging with at least some of the power supplies and with the loads or a load control device coupled with a corresponding load; and

at least one processor programmed to;

obtain a plurality of consumption profiles via the communications interface, each individual consumption profile corresponding to a particular one of the plurality of loads,

compute a micro-grid load profile for the micro-grid power system based at least partially on the consumption profiles,

compute an active reserve power level for the micro-grid power system based at least partially on the consumption profiles, and

obtain power supply information including at least one power supply profile and power supply data for at least some of the power supplies via the communications interface, and

set an activation state of one or more of the plurality of power supplies based at least partially on the power supply information, the computed micro-grid load profile and the computed active reserve power level.

15. The master controller of claim 14, wherein the individual consumption profiles specify resistive, inductive and/or capacitive power or energy consumption for a start or inrush state and a run state for the corresponding load.

16. The master controller of claim 14, wherein the individual consumption profiles indicate a base load level and a required reserve capacity load level for the corresponding load.

17. The master controller of claim 14, wherein the individual consumption profiles are requested by the at least one processor via the communications interface automatically in response to requested or anticipated change in load consumption and/or supply capability.

18. The master controller of claim 14, wherein the individual power supply profile for a given power supply specifies at least one of a power efficiency profile, an output profile, and an energy profile as a function of at least one of load and operating condition for the given power supply.

19. The master controller of claim 14, wherein the power supply data for a given power supply specifies one of a running or stopped status, an online or offline status, a voltage, a wattage, a size, a type, and a model for the given power supply.

20. The master controller of claim 14, wherein the individual power supply profiles or data are requested by the at least one processor via the communications interface automatically in response to requested or anticipated change in load consumption and/or supply capability.

21. A stand-alone micro-grid power system, comprising:

a plurality of loads disconnected from utility power and individually capable of consuming electrical power when activated;

a plurality of power supplies disconnected from utility power and operatively coupled with the at least one load and with one another to form a micro-grid, at least some of the power supplies being operatively coupled to provide electrical power to the micro-grid when activated; and

a master controller comprising at least one processor, an electronic memory, and a communications interface, the at least one processor being configured to automatically control the provision of electrical power in the micro-grid power system for a requested or anticipated change in load consumption and/or supply capability by;

obtaining a plurality of consumption profiles via the communications interface, each individual consumption profile corresponding to a particular one of the plurality of loads,

obtaining power supply profiles for at least some of the power supplies via the communications interface,

selectively adjusting at least one of the consumption profiles of at least one of the loads and the power supply profile of at least one of the power supplies at least partially according to at least one of an environmental condition of the micro-grid and a geographical location of the micro-grid,

determining a micro-grid load profile for the micro-grid power system based at least partially on the consumption profiles,

determining an active reserve power level for the micro-grid power system based at least partially on the consumption profiles, and

setting an activation state of one or more of the plurality of power supplies based at least partially on the power supply profiles, the determined micro-grid load profile and the determined active reserve power level.