Branch circuit monitor system

• US 7,453,267 B2
• Filed: 01/17/2006
• Issued: 11/18/2008
• Est. Priority Date: 01/14/2005
• Status: Active Grant

• Current Assignee: Schneider Electric USA, Inc. (Schneider Electric SE)
• Original Assignee: Power Measurement Ltd. (Schneider Electric SE)
• Inventors: Hancock, Martin A., Cowan, Peter C., Westbrock, William B. Jr., Gillis, Michael James, Lindsay, Hugh
• Primary Examiner(s): Nguyen; Vincent Q
• Application Number:
  US11/333,422
• Publication Number:
  US 20060238932A1
• Time in Patent Office: 1,036 Days
• Field of Search: 324/142, 324/522, 702/60, 702/122
• US Class Current: 324/522
• CPC Class Codes: H02H 1/0038 concerning the connection of the detecting means, e.g. for reducing their number
• CPC Class Codes: H02H 1/0061 concerning transmission of signals transmission of measured quantities or switching orders; sectionalised protection involving signal transmission between at least two stations H02H7/261; comparison of the voltage or current values at two spaced portions of a single system H02H3/28; transferring the output of a sensing member to another variable G01D5/00; electrical measuring arrangements using modulation of electromagnetic waves, e.g. light beams G01R15/24, G01R15/26
• CPC Class Codes: H02H 3/006 Calibration or setting of parameters

Abstract

A branch circuit monitoring system includes a plurality of current sensor modules that are installable in a panelboard. Each of the current sensor modules may be associated with a respective one of a plurality of branch circuits included in the panelboard. Each of the current sensor modules may include a current sensor, operating logic and a communication module. The current sensor may measure a power parameter of the respective branch circuit associated therewith. The operating logic may be coupled with the current sensor and the communication module, and may direct the overall functionality of the current sensor module. The communication module may be operable to communicate with a device external to the current sensor module.

Claims

1. A branch circuit monitoring system comprising:

a first current sensor module comprising;

a first current sensor operative to measure at least one power parameter of a first branch circuit line;

a first operating logic coupled with said first current sensor; and

a first communication module operative to establish communications with an external device, said first communication module coupled with said first operating logic; and

a second current sensor module comprising;

a second current sensor operative to measure at least one power parameter of a second branch circuit line;

a second operating logic coupled with said second current sensor; and

a second communication module coupled with said second operating logic,

wherein said external device comprises a digital network, wherein said first operating logic includes digital networking logic operative to enable direct communication between said first current sensor module and said second current sensor module and between said first current sensor module and said digital network, wherein said digital network is at least one of an Internet, a wide area network, or a local area network, or combinations thereof.

2. The branch circuit monitoring system of claim 1 wherein said first communication module is operative to enable electronic mail client communication.

3. The branch circuit monitoring system of claim 1 wherein said external device comprises a third current sensor module, an external monitoring device, an external digital network, or a combination thereof.

4. The branch circuit monitoring system of claim 1 wherein said first communication module is operative to enable communication with at least one of cellular phone communication, pager communication, or a combination thereof.

5. The branch circuit monitoring system of claim 4 wherein said second communication module is operative to enable communication with at least one of cellular phone communication, pager communication, or a combination thereof.

6. The branch circuit monitoring system of claim 1 wherein said first communication module is operative to enable electronic mail applications that include SMTP, MIME, and POP network communication protocols, or a combination thereof.

7. The branch circuit monitoring system of claim 6 wherein said second communication module is operative to enable electronic mail applications that include SMTP, MIME, and POP network communication protocols, or a combination thereof.

8. The branch circuit monitoring system of claim 1 wherein said first operating logic is operative to generate a web-based configuration page, said web-based configuration page operable to enable menu-driven configuration of said first current sensor module and said second current sensor module.

9. The branch circuit monitoring system of claim 8 wherein said second operating logic is operative to generate a web-based configuration page, said web-based configuration page operable to enable menu-driven configuration of said first current sensor module and said second current sensor module.

10. The branch circuit monitoring system of claim 1 wherein said first operating logic includes power management logic functions comprising at least one of a sliding window demand function, a harmonics function, a waveform capture function, a time synchronization function, a power quality analysis function, a transient detection function or a fast Fourier transform analysis function, or a combination thereof.

11. The branch circuit monitoring system of claim 10 wherein said time synchronization function is operative to include a time reference in data communicated from each of said first current sensor module and said second current sensor module.

12. The branch circuit monitoring system of claim 1 wherein said first communication module includes a security client application operative to provide a secure communication link with said external device.

13. The branch circuit monitoring system of claim 1 wherein said first current sensor, said first operating logic and said first communication module are embedded in one of a circuit breaker or said first branch circuit line.

14. The branch circuit monitoring system of claim 1 wherein said second communication module is operative to establish communications with said external device.

15. The branch circuit monitoring system of claim 14, wherein said second operating logic includes digital networking logic operative to enable direct communication between said second current sensor module and said digital network.

16. The branch circuit monitoring system of claim 14 wherein said second communication module includes a security client application operative to provide a secure communication link with said external device.

17. The branch circuit monitoring system of claim 1 wherein the first communication module and the second communication module are each operative to communicate digital information.

18. A branch circuit monitoring system comprising:

a first current sensor module comprising;

a first current sensor operative to measure at least one power parameter of a first branch circuit line;

a first operating logic coupled with said first current sensor; and

a first communication module operative to establish communications with an external device, said first communication module coupled with said first operating logic; and

a second current sensor module comprising;

a second current sensor operative to measure at least one power parameter of a second branch circuit line;

a second operating logic coupled with said second current sensor; and

a second communication module coupled with said second operating logic,

wherein said first communication module and said second communication module are operative with selective functionality to communicate in a plurality of protocols, comprising at least two of a BACnet protocol, a Profibus protocol, an IEC 870 protocol, a Lonworks protocol, a simple network management protocol, a distributed network protocol, or a Modbus protocol, or a combination thereof.

19. The branch circuit monitoring system of claim 18, wherein said selective functionality is operable to detect incoming communication that is one of said protocols and switch between said protocols to communication in said detected one of said protocols.

20. A branch circuit monitoring system comprising:

a first current sensor module comprising;

a first current sensor operative to measure at least one power parameter of a first branch circuit line;

a first operating logic coupled with said first current sensor; and

a first communication module operative to establish communications with an external device, said first communication module coupled with said first operating logic; and

a second current sensor module comprising;

a second current sensor operative to measure at least one power parameter of a second branch circuit line;

a second operating logic coupled with said second current sensor; and

a second communication module coupled with said second operating logic,

wherein said first communication module and said second communication module comprise a communication link that is formed with one of an infrared connection, a Bluetooth connection, a radio frequency connection, a Zigbee interface connection, or an 802.11 interface connection.

21. A branch circuit monitoring system comprising:

a first current sensor module comprising;

a first current sensor operative to measure at least one power parameter of a first branch circuit line;

a first operating logic coupled with said first current sensor; and

a first communication module operative to establish communications with an external device, said first communication module coupled with said first operating logic; and

a second current sensor module comprising;

a second current sensor operative to measure at least one power parameter of a second branch circuit line;

a second operating logic coupled with said second current sensor; and

a second communication module coupled with said second operating logic,

wherein said first operating logic contains a unique identifier that is one of a port address representative of said first branch circuit line and a radio frequency identification chip number.

22. The branch circuit monitoring system of claim 21 wherein said second operating logic contains a unique identifier that is one of a port address representative of said second branch circuit line and a radio frequency identification chip number.