FLEXIBLE ELECTRIC LOAD MANAGEMENT SYSTEM AND METHOD THEREFORE

• US 20090018706A1
• Filed: 11/26/2006
• Published: 01/15/2009
• Est. Priority Date: 11/25/2005
• Status: Abandoned Application

• Current Assignee: Computerized Security Systems, Inc. (dormakaba Holding AG)
• Original Assignee: Computerized Security Systems, Inc. (dormakaba Holding AG)
• Inventors: Wittner, Lupu
• Application Number:
  US12/092,821
• Publication Number:
  US 20090018706A1
• Time in Patent Office: Days
• US Class Current: 700/295
• 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: 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

A system for controlling electricity consumption of an electricity consumer having a plurality of loads, including: (a) a main central processing unit, connected to a power source, and adapted to receive a signal therefrom; (b) a memory associated with the processing unit; (c) controlled relay assemblies connected to a plurality of loads via local circuit breakers, each assembly including: (i) a relay, responsive to the processing unit; (ii) a current sensor, electrically connected to the relay, the relay and the current sensor being electrically associated with the processing unit, and (iii) an electrical line having a first end connecting the relay assembly to the power source, and having a second end connecting to a local circuit breaker connected to at least one load; wherein each current sensor is adapted to provide, to the processing unit, data pertaining to current drawn via a particular local circuit breaker, and wherein the processing unit is configured to command the relay based on the signal received from the power source, and based on a set of rules provided to the processing unit, the set of rules including load priority information, such that each relay opens or closes in response to the command from the processing unit, so as to shut off or restore power to the electrical line.

Claims

1. A computerized load management system for monitoring and controlling electricity consumption of an electricity consumer having a plurality of loads, the system comprising:

(a) a main central processing unit, connected to a power source, and adapted to receive a signal therefrom;

(b) a memory associated with said main central processing unit;

(c) a plurality of controlled relay assemblies connected to a plurality of loads via a plurality of local circuit breakers, each assembly of said assemblies including;

(i) a relay, responsive to said main central processing unit;

(ii) a current sensor, electrically connected to said relay, said relay and said current sensor being electrically associated with said main central processing unit, and

(iii) an electrical line having a first end connecting said relay assembly to said power source, and having a second end connecting to a local circuit breaker connected to at least one load;

wherein each said current sensor is adapted to provide, to said main central processing unit, data pertaining to current drawn via a particular local circuit breaker of said local circuit breakers,

and wherein said main central processing unit is configured to command said relay within each of said relay assemblies based on said signal received from said power source, and based on a set of rules provided to said main central processing unit, said set of rules including load priority information,

such that each said relay opens or closes in response to said command from said main central processing unit, so as to shut off power or restore power to a particular said electrical line.

2. The load management system of claim 1, wherein the computerized load management system is entirely disposed between a main circuit breaker connected to said power source, and said local circuit breakers.

3. The load management system of claim 1, wherein said main central processing unit, said memory and said relay assemblies are enclosed within a single housing.

4. The load management system of claim 2, wherein said main central processing unit, said memory and said relay assemblies are enclosed within a single housing.

5. The load management system of claim 1, wherein said main central processing unit is adapted to send, to said power source, information pertaining to power consumption.

6. The load management system of claim 5, wherein said information is based on said data provided by each said current sensor.

7. The load management system of claim 5, said information pertaining to power saved during load management.

8. The load management system of claim 1, wherein said main central processing unit is configured to display said load priority information for closing and opening said relay assemblies.

9. The load management system of claim 1, wherein said main central processing unit is configured to receive, from a user, input associated with priorities and conditions for closing and opening said relays.

10. The load management system of claim 1, further comprising:

(d) a current sensor, associated with said power source and said central processing unit, for measuring total current, as a function of time, being drawn by said loads, and for providing data pertaining to said current to said central processing unit.

11. The load management system of claim 1, wherein said main central processing unit is configured to command each said relay to close and open so that a total power consumption consumed by said plurality of loads is held beneath a power consumption threshold.

12. The load management system of claim 11, wherein said main central processing unit controls an order of opening and closing of said relays based on rules preprogrammed into said main central processing unit, said rules including:

(I) said main central processing unit closes at least a first relay of said relays, so as to cut off power to at least one of said loads, according to a lowest priority of the consumer.

13. The load management system of claim 12, wherein prior to (I), said main central processing unit determines, based on historical data on current drawn through said first relay, that said cut off of said power will reduce said total power consumption below said power consumption threshold.

14. The load management system of claim 12, said rules further including:

(II) said main central processing unit checks, in a substantially continuous manner, power consumption on each said electric line, and when a drop in said total power consumption is observed, said main central processing unit determines that at least one particular relay within said relay assemblies can be opened, without exceeding said power consumption threshold, and subsequently commands said particular relay to open, so as to restore power via said particular relay.

15. The load management system of claim 14, said rules further including:

(III) after at least one relay of said at least one particular relay is opened, said main central processing unit checks that said total power consumption is still beneath said power consumption threshold.

16. The load management system of claim 14, said rules further including:

(IV) if said main central processing unit determines that said total power consumption exceeds said threshold, said main central processing unit closes a lowest priority relay unit of said relay units.

17. The load management system of claim 16, said rules further including:

(V) after waiting for a predetermined time, said main central processing unit retries opening said lowest priority relay unit.

18. The load management system of claim 1, wherein disposed between said power source and said loads is solely said main central processing unit.

19. The load management system of claim 1, wherein said relay assemblies are directly responsive to said main central processing unit.

20. The load management system of claim 1, wherein at least one of said relay assemblies is connected to at least two appliances.

21. A computerized load management system for monitoring and controlling electricity consumption of an electricity consumer having a plurality of loads, the system comprising:

(a) a main central processing unit, adapted for connecting to a power source, and adapted to receive a signal therefrom;

(b) a memory associated with said main central processing unit;

(c) a plurality of controlled relay assemblies for connecting to a plurality of loads via a plurality of local circuit breakers, each assembly of said assemblies including;

(i) a relay, responsive to said main central processing unit;

(ii) a current sensor, electrically connected to said relay, said relay and said current sensor being electrically associated with said main central processing unit, and

(iii) an electrical line having a first end adapted for connecting said relay and said current sensor to said power source, and having a second end adapted for connecting to a local circuit breaker connected to at least one load,

wherein, when the load management system is connected to said power source and to said loads, each said current sensor is adapted to provide, to said main central processing unit, data pertaining to current drawn via a particular local circuit breaker of said local circuit breakers,

and wherein said main central processing unit is configured to command a relay of said relay assemblies based on said signal received from said power source, and based on a set of rules provided to said main central processing unit, said set of rules including load priority information, such that each said relay opens or closes in response to a command from said main central processing unit, so as to shut off power or restore power to a particular said electrical line,

and wherein said relay assemblies are directly responsive to said main central processing unit.

22. The load management system of claim 21, wherein at least one of said relay assemblies is adapted for at least two appliances.

23. A computerized load management system for monitoring and controlling electricity consumption of an electricity consumer having a plurality of loads, the system comprising:

(a) a main central processing unit, adapted for connecting to a power source, and adapted to receive a signal therefrom;

(b) a memory associated with said main central processing unit;

(c) a plurality of controlled relay assemblies for connecting to a plurality of loads via a plurality of local circuit breakers, each assembly of said assemblies including;

(i) a relay, responsive to said main central processing unit;

(ii) a current sensor, electrically connected to said relay, said relay and said current sensor being electrically associated with said main central processing unit, and

(iii) an electrical line having a first end adapted for connecting said relay and said current sensor to said power source, and having a second end adapted for connecting to a local circuit breaker connected to at least one load,

wherein, when the load management system is connected to said power source and to said loads, each said current sensor is adapted to provide, to said main central processing unit, data pertaining to current drawn via a particular local circuit breaker of said local circuit breakers,

and wherein said main central processing unit is configured to command a relay of said relay assemblies based on said signal received from said power source, and based on a set of rules provided to said main central processing unit, said set of rules including load priority information, provided by the electricity consumer, such that each said relay opens or closes in response to a command from said main central processing unit, so as to shut off power or restore power to a particular said electrical line.

24. The load management system of claim 23, wherein the computerized load management system is entirely disposed between a main circuit breaker connected to said power source, and said local circuit breakers.

25. The load management system of claim 23, wherein the said main central processing unit, said memory and said relay assemblies are enclosed within a single housing.