Power line communication system and method of operating the same

• US 8,198,999 B2
• Filed: 12/12/2008
• Issued: 06/12/2012
• Est. Priority Date: 12/10/2002
• Status: Expired due to Fees

• Current Assignee: Current Technologies LLC (Pattern Inc.)
• Original Assignee: Current Technologies LLC (Pattern Inc.)
• Inventors: White, II, Melvin Joseph, Mollenkopf, James Douglas
• Primary Examiner(s): POPE, DARYL C
• Application Number:
  US12/333,517
• Publication Number:
  US 20090134996A1
• Time in Patent Office: 1,278 Days
• Field of Search: 340/506, 340/3.1, 340/538, 340/12.32, 340/310.11, 340/310.16, 340/538.15, 370/420, 370/463
• US Class Current: 340/538.15
• CPC Class Codes: H04B 2203/5491 using filtering and bypassing
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals

Abstract

A system for operating a power line communications system is provided. One embodiment is comprised of a plurality of network elements, which may take the form of repeaters, bypass devices, backhaul devices, wireless backhaul devices, enhanced bypass device, communication interface devices and others. In one embodiment, two groups of network elements in the same electrical distribution system are isolated except selected communication link. The network elements respond to requests for data and send out of limit notifications to a remote computer.

Claims

1. A method of using a computer system to operate a communication system for communicating data of an electrical power distribution network (EPDN) having a plurality medium voltage power lines and low voltage power lines, and wherein the communication system includes a plurality of network elements, with each network element having a first port coupled to a different low voltage power line of the EPDN at a different location, the method comprising:

storing network element information for each of a multitude of the plurality of network elements in a memory;

wherein said network element information comprises an address and information identifying the network element;

transmitting a request to one or more network elements for low voltage parameter data comprising data of a measurement of a parameter of a low voltage power line to which the network element is coupled;

in response to said transmitting, receiving low voltage parameter data from the one or more network elements;

receiving an out of limit notification from one of said plurality of network elements;

wherein the out of limit notification indicates that a parameter of the power carried by a low voltage power line has been measured by the one network element to be beyond a first threshold value; and

storing the out of limit notification in memory.

2. The method of claim 1, wherein the network element information includes information sufficient for determining the physical location of the network element.

3. The method of claim 1, wherein said receiving an out of limit notification comprises receiving the out of limit notification from the network element via a path that includes a medium voltage power line.

4. The method of claim 1, further comprising transmitting an encryption key to a network element.

5. The method of claim 1, wherein the low voltage parameter data comprises voltage data of the low voltage power line to which the network element is coupled.

6. The method of claim 1, wherein the low voltage parameter data comprises current data of the low voltage power line to which the network element is coupled.

7. The method of claim 1, wherein a multitude of the network elements are coupled to different phase conductors of the same multi-phase medium voltage power line.

8. The method of claim 1, wherein the low voltage parameter data comprises voltage data and current data of the low voltage power line to which the network element is coupled.

9. The method of claim 1, further comprising:

receiving information of a plurality of user devices communicatively coupled to each network element; and

storing said information of the plurality of user devices in memory.

10. The method of claim 1, further comprising:

identifying a power outage on the EPDN; and

determining a location associated with the power outage.

11. The method of claim 10, further comprising outputting information of the power outage and information relating to the location of the power outage.

12. The method of claim 1, further comprising:

determining a network address for a network element; and

transmitting said address to the network element.

13. The method of claim 1, further comprising transmitting program code to a network element for storage therein.

14. The method of claim 1, further comprising transmitting a time synchronization command to a multitude of the network elements and wherein said time synchronization command includes time information.

15. The method according to claim 14, wherein said out of limit notification includes data of a time of a measurement of the parameter of the power carried by a low voltage power line.

16. The method according to claim 14, wherein said low voltage parameter data includes data of the time of the measurement of the parameter of the low voltage power line.

17. The method of claim 1, further comprising transmitting information of measurement intervals to a network element.

18. The method of claim 1, wherein said out of limit notification is received repeatedly from the one network element until the one network element measures the parameter not beyond the threshold value.

19. The method of claim 1, wherein the out of limit notification indicates that a voltage of a low voltage power line has been measured by the one network element to be beyond a first threshold value.

20. The method of claim 1, wherein the out of limit notification indicates that a current of a low voltage power line has been measured by the one network element to be beyond a first threshold value.

21. The method of claim 20, further comprising:

receiving a second out of limit notification from a second of said plurality of networks elements; and

wherein said second out of limit notification indicates that a voltage of the power carried by a low voltage power line has been measured by the second network element to be beyond a second threshold value.

22. A method of using a computer system to operate a communication system for communicating data of an electrical power distribution network (EPDN) having a plurality medium voltage power lines and low voltage power lines, and wherein the communication system includes a plurality of network elements, with each network element having a first port coupled to a different low voltage power line of the EPDN at a different location, the method comprising:

storing network element information for each of a multitude of the plurality of network elements in a memory;

wherein said network element information comprises an address and information identifying the network element;

receiving a plurality of out of limit notifications from a multitude of the plurality of network elements;

wherein each notification of a first set of the plurality of out of limit notifications indicates that a voltage of the power carried by a low voltage power line has been measured, by the network element sending the notification, to be beyond a first threshold value; and

wherein each notification of a second set of the out of limit notifications indicates that a current carried by a low voltage power line has been measured, by the network element sending the notification, to be beyond a second threshold value.

23. The method of claim 22, wherein said network information includes information sufficient for determining the physical location of the network element.

24. The method of claim 22, wherein said receiving a plurality of out of limit notifications comprises receiving the out of limit notifications from at least some of the multitude of the network elements via a path that includes a medium voltage power line.

25. The method of claim 22, further comprising:

receiving information of a plurality of user devices communicatively coupled to each of the plurality of network elements; and

storing said information of the plurality of user devices in memory.

26. The method of claim 22, further comprising:

identifying a power outage on the EPDN; and

determining a location associated with the power outage.

27. The method of claim 22, further comprising:

determining a network address for a network element; and

transmitting said address to the network element.

28. The method of claim 22, further comprising transmitting a time synchronization command to a multitude of the network elements and wherein said time synchronization command includes time information.

29. The method of claim 22, further comprising transmitting information of measurement intervals to the plurality of network elements.

30. A method of using a computer system to operate a communication system for communicating data of an electrical power distribution network (EPDN) having a plurality medium voltage power lines and low voltage power lines, and wherein the communication system includes a plurality of network elements, with each network element having a first port coupled to a different low voltage power line of the EPDN at a different location, the method comprising:

storing network element information for each of a multitude of the plurality of network elements in a memory;

wherein said network element information comprises an address and information identifying the network element;

receiving an out of limit notification from a first network element; and

wherein the out of limit notification indicates that a voltage of the power carried by a low voltage power line has been measured, by the first network element, to be beyond a first threshold value.

31. A method of using a computer system to operate a communication system for communicating data of an electrical power distribution network (EPDN) having a plurality medium voltage power lines and low voltage power lines, and wherein the communication system includes a plurality of network elements, with each network element having a first port coupled to a different low voltage power line of the EPDN at a different location, the method comprising:

storing network element information for each of a multitude of the plurality of network elements in a memory;

wherein said network element information comprises an address and information identifying the network element;

receiving an out of limit notification from a first network element; and

wherein the out of limit notification indicates that a current carried by a low voltage power line has been measured, by the first network element, to be beyond a first threshold value.