Distributed energy storage for reducing power demand

• US 20070005195A1
• Filed: 01/10/2006
• Published: 01/04/2007
• Est. Priority Date: 01/10/2005
• Status: Abandoned Application

• Current Assignee: Stem, Inc.
• Original Assignee: Stem, Inc.
• Inventors: Olsen, Ib, Pasquale, Nicholas
• Application Number:
  US11/328,460
• Publication Number:
  US 20070005195A1
• Time in Patent Office: Days
• US Class Current: 700/295
• CPC Class Codes: H02J 15/007 involving storage in the form of mechanical energy, e.g. fly-wheels
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks

Abstract

Mating an energy storage component and a power conversion and delivery component with computer intelligence and digital data communications hardware helps to effectively and efficiently monitor and react to the power demand profile at a location in an advanced manner without expensive industrial controls or human interaction. A local power source includes an energy storage component and a power conversion and delivery component, and delivers power to a load or a load group. The local power source is controlled by a control component including, for example, digital computer hardware and digital communications hardware. The control component is capable of monitoring power demand, detecting various stimuli, and triggering a reaction by the local power source to reduce peak demand.

Claims

1. A system configured for operation at a residential location that has at least one load that exhibits a demand characteristic that changes in excess of a threshold level, at least one load that has a demand characteristic that changes less than the threshold level, and an electrical distribution panel that is configured to receive power at the residential location from a remote power source, to distribute a portion of the received power to the at least one load that has a demand characteristic that changes in excess of the threshold level, and to distribute another portion of the received power to the at least one load that has a demand characteristic that changes less than the threshold level, the system comprising:

a local power source configured to;

connect to the electrical distribution panel,

connect, in series, to the at least one load that has a demand characteristic that changes less than the threshold level,

access an indication of a power demand generated by loads at the residential location,

determine, based on the accessed indication of power demand generated by loads at the residential location, that a peak power demand is occurring at the residential location, and

based on the determination that the peak power demand is occurring at the residential location, provide power to the at least one load that has a demand characteristic that changes less than the threshold level.

2. The system of claim 1 wherein the local power source includes:

a component for storing energy;

a component for converting the stored energy and providing power; and

a processing device configured to;

access the indication of the power demand generated by loads at the residential location,

determine, based on the accessed indication of power demand generated by loads at the residential location, that the peak power demand is occurring at the residential location, and

inspire the component for converting the stored energy and providing power to provide power to the at least one load that has a demand characteristic that changes less than the threshold level, based on the determination that the peak power demand is occurring at the residential location.

3. The system of claim 2 further comprising a location demand sensing device configured to:

sense the power demand at the residential location; and

provide the indication of the power demand at the residential location.

4. The system of claim 3 wherein the location demand sensing device is located at the electrical distribution panel.

5. The system of claim 4 wherein:

the received power includes a received current; and

the location demand sensing device includes a current clamp that senses the received current.

6. The system of claim 4 further comprising an input power sensing device configured to:

sense a power input to the local power source; and

provide an indication of the power input to the local power source;

wherein the processing device is further configured to;

access the indication of the power input to the local power source; and

regulate the power provided by the component for converting the stored energy and providing power to the at least one load that-has a demand characteristic that changes less than the threshold level.

7. The system of claim 6 wherein:

the power input to the local power source includes an input current; and

the input power sensing device includes a current clamp that senses the input current.

8. The system of claim 1 wherein the local power source determines that the peak power demand is occurring at the residential location based, at least in part, on the indication of the power demand at the residential location.

9. The system of claim 8 wherein:

the local power source is further configured to access one or more operational parameters; and

to determine that the peak power demand is occurring at the residential location based on the one or more operational parameters in addition to the indication of the power demand at the residential location.

10. The system of claim 9 wherein the one or more operational parameters include:

historical power and energy consumption data;

environmental data;

utility response data;

utility crisis situation dispatch data;

look-up tables based on analytical data relating to peak demand issues;

local power source energy storage level data;

local power source operational health data;

time of day data;

seasonal timing data;

load profile data from main electrical service entries; and

load profile data of individual loads.

11. The system of claim 1 wherein the local power source is further configured to provide power supplemental to and concurrently with the portion of the received power distributed to the at least one load that has a demand characteristic that changes less than the threshold level.

12. A method comprising:

providing a tool configured for;

accessing an indication of a power demand generated by loads at a residential location that has at least one load that has a demand characteristic that changes in excess of a threshold level, at least one load that has a demand characteristic that changes less than the threshold level, and an electrical distribution panel configured to receive power at the residential location from a remote source, distribute a portion of the received power to the at least one load that has a demand characteristic that changes in excess of the threshold level, and to distribute a portion of the received power to the at least one load that has a demand characteristic that changes less than the threshold level;

determining, based on the accessed indication of power demand generated by loads at the residential location, that a peak power demand is occurring at the residential location; and

based on the determination that the peak power demand is occurring at the residential location, providing power to the at least one load that has a demand characteristic that changes less than the threshold level.

13. The method of claim 12 wherein:

the received power includes a received current; and

accessing an indication of the power demand at the residential location includes sensing the received current at the electrical distribution panel.

14. The method of claim 13 further comprising:

sensing a power input to the local power source, and

wherein providing power to the at least one load that has a demand characteristic that changes less than the threshold level includes controlling the power provided based on the sensed power input to the local power source.

15. The method of claim 12 wherein the determination that the peak power demand is occurring at the residential location is based, at least in part, on the indication of the power demand at the residential location.

16. The method of claim 15 wherein:

the tool is further configured for accessing one or more operational parameters; and

the determination that the peak power demand is occurring at the residential location is based on the one or more operational parameters in addition to the indication of the power demand at the residential location.

17. The method of claim 16 wherein the one or more operational parameters include:

historical power and energy consumption data;

environmental data;

utility response data;

utility crisis situation dispatch data;

look-up tables based on analytical data relating to peak demand issues;

local power source energy storage level data;

local power source operational health data;

time of day data;

seasonal timing data;

load profile data from main electrical service entries; and

load profile data of individual loads.

18. The method of claim 12 wherein:

determining that a peak power demand is occurring includes determining an amount by which the power demand at the residential location exceeds a desired level, and

providing power to the at least one load that has a demand characteristic that changes less than the threshold level includes providing no more power than the amount by which the power demand at the residential location exceeds the desired level.

19. The method of claim 12 wherein providing power to the at least one load that has a demand characteristic that changes less than the threshold level includes providing power supplemental to and concurrently with the portion of the received power distributed to the at least one load that has a demand characteristic that changes less than the threshold level.

20. A system configured for operation at a location that has an electrical distribution panel, one or more loads, and a local power network connected to the electrical distribution panel and the one or more loads, the electrical distribution panel configured to receive power at the location from a remote power source and distribute the received power to the one or more loads over the local power network, the system comprising:

a local power source, at the location, configured to;

connect to the electrical distribution panel in parallel with the remote power source,

access an indication of a power demand generated by loads at the location,

determine, based on the accessed indication of power demand generated by loads at the location, that a peak power demand is occurring at the location, and

based on the determination that the peak power demand is occurring at the location, inject supplemental power through the electrical distribution panel into the local power network, such that the supplemental power and the received power are distributed to the one or more loads concurrently.

21. The system of claim 20 wherein the local power source is further configured to limit the supplemental power injected into the local power network such that the supplemental power is less than the indication of the power demand at the location.

22. The system of claim 20 wherein the local power source includes:

a component for storing energy;

a component for converting the stored energy and providing power; and

a processing device configured to;

access the indication of the power demand at the location,

determine, based on the accessed indication of power demand at the location, that the peak power demand is occurring at the location, and

inspire the component for converting the stored energy and providing power to inject supplemental power through the electrical distribution panel into the local power network, based on the determination that the peak power demand is occurring at the location.

23. The system of claim 22 further comprising a location demand sensing device configured to:

sense the power demand at the location; and

provide the indication of the power demand at the location.

24. The system of claim 23 wherein the location demand sensing device is located at the electrical distribution panel.

25. The system of claim 24 wherein:

the received power includes a received current; and

the location demand sensing device includes a current clamp that senses the received current.

26. The system of claim 25 further comprising an output power sensing device configured to:

sense a power output by the local power source; and

provide an indication of the power output by the local power source;

wherein the processing device is further configured to;

access the indication of the power output by the local power source; and

regulate the power injected into the local power network by the component for converting the stored energy and providing power.

27. The system of claim 26 wherein:

the power output by the local power source includes an output current; and

the output power sensing device includes a current clamp that senses the output current.

28. The system of claim 20 wherein the local power source determines that the peak power demand is occurring at the location, and the determination that the peak power demand is occurring at the location is based, at least in part, on the indication of the power demand at the location.

29. The system of claim 28 wherein:

the local power source is further configured to access one or more operational parameters; and

the determination that the peak power demand is occurring at the location is based on the one or more operational parameters in addition to the indication of the power demand at the location.

30. The system of claim 29 wherein the one or more operational parameters include:

historical power and energy consumption data;

environmental data;

utility response data;

utility crisis situation dispatch data;

look-up tables based on analytical data relating to peak demand issues;

local power source energy storage level data;

local power source operational health data;

time of day data;

seasonal timing data;

load profile data from main electrical service entries; and

load profile data of individual loads.

31. A method comprising:

providing a tool configured for

accessing an indication of a power demand at a location that has an electrical distribution panel, one or more loads, and a local power network connected to the electrical distribution panel and the one or more loads, the electrical distribution panel configured to receive power at the location from a remote power source and distribute the received power to the one or more loads over the local power network;

determining, based on the accessed indication of power demand at the location, that a peak power demand is occurring at the location; and

based on the determination that the peak power demand is occurring at the location, injecting supplemental power through the electrical distribution panel into the local power network, such that the supplemental power and the received power are distributed to the one or more loads concurrently.

32. The method of claim 31 wherein:

the received power includes a received current; and

accessing an indication of the power demand at the location includes sensing the received current at the electrical distribution panel.

33. The method of claim 32 further comprising:

sensing a power output by the local power source;

wherein injecting power into the local power network includes controlling the power injected based on the sensed power output by the local power source.

34. The method of claim 31 wherein the determination that the peak power demand is occurring at the location is based, at least in part, on the indication of the power demand at the location.

35. The method of 34 wherein:

the tool is further configured for accessing one or more operational parameters; and

the determination that the peak power demand is occurring at the location is based on the one or more operational parameters in addition to the indication of the power demand at the location.

36. The method of claim 35 wherein the one or more operational parameters include:

historical power and energy consumption data;

environmental data;

utility response data;

utility crisis situation dispatch data;

look-up tables based on analytical data relating to peak demand issues;

local power source energy storage level data;

local power source operational health data;

time of day data;

seasonal timing data;

load profile data from main electrical service entries; and

load profile data of individual loads.

37. A method comprising:

providing a tool for;

accessing an indication of a power demand at a residential location,

accessing one or more operational parameters,

determining, based on the accessed indication of the power demand at the residential location and the accessed one or more operational parameters, that a peak power demand is occurring at the residential location.

38. The method of claim 37 wherein the one or more operational parameters include:

historical power and energy consumption data;

environmental data;

utility response data;

utility crisis situation dispatch data;

look-up tables based on analytical data relating to peak demand issues;

local power source energy storage level data;

local power source operational health data;

time of day data;

seasonal timing data;

load profile data from main electrical service entries; and

load profile data of individual loads.