Power line coupling device and method of using the same
First Claim
1. A power line communications coupling device for communicating data signals over an underground power line cable comprising a center conductor, a concentric insulator disposed external the center conductor, and a concentric conductor disposed around the circumference of the power line cable external to the insulator over a first portion of the power line, and wherein the power line cable is configured to carry a power signal having a voltage greater than one thousand volts, the device comprising:
- a coupling conductor having a first end and a second end and disposed substantially around the circumference of the cable at a second portion of the cable where the concentric conductor is not present;
a gap formed between the concentric conductor and said first end of said coupling conductor;
wherein a third portion of the cable extends from said second end of said coupling conductor where the concentric conductor is not present; and
a communication device communicatively coupled to the coupling conductor.
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Accused Products
Abstract
The invention describes a method and a device for communicating a signal over a power line. One embodiment may comprise a length of MV power cable that comprises a center conductor substantially surrounded by an insulator. A first concentric conductor is disposed external to the insulator over a first portion of the cable. A second concentric conductor that may have a length related to the wavelength of one or more carry frequencies of the data signals is disposed external to the insulator over a second portion of the cable and external to the insulator. A first gap is formed where the cable is exposed between the first concentric conductor and a first end of the second concentric conductor. A transceiver for communicating data signals over the MV power cable may be coupled to the first end of the second concentric conductor.
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Citations
69 Claims
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1. A power line communications coupling device for communicating data signals over an underground power line cable comprising a center conductor, a concentric insulator disposed external the center conductor, and a concentric conductor disposed around the circumference of the power line cable external to the insulator over a first portion of the power line, and wherein the power line cable is configured to carry a power signal having a voltage greater than one thousand volts, the device comprising:
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a coupling conductor having a first end and a second end and disposed substantially around the circumference of the cable at a second portion of the cable where the concentric conductor is not present; a gap formed between the concentric conductor and said first end of said coupling conductor; wherein a third portion of the cable extends from said second end of said coupling conductor where the concentric conductor is not present; and a communication device communicatively coupled to the coupling conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of communicating data signals on an underground power line cable carrying a power signal having a voltage greater than one thousand volts, the power line cable having a coaxial structure comprising a center conductor, a concentric insulator disposed around the center conductor, and a concentric conductor disposed external to the insulator, the method comprising:
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removing a portion of the concentric conductor from a first portion of the cable; attaching a coupling conductor having a first end and a second end around the insulator over a section of the first portion of cable, wherein the coupling conductor is attached to form a gap between the first end of the coupling conductor and an end of the concentric conductor, and wherein the first portion of the cable extends beyond the second end of the coupling conductor; and communicatively coupling a transceiver to the coupling conductor. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A power line communication system, comprising:
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a cable configured to carry a power signal having a voltage greater than one thousand volts and comprising a center conductor and a concentric insulator disposed external to the center conductor; a first concentric conductor disposed over a first portion of the length of the cable and external to said insulator; a second concentric conductor disposed over a second portion of the length of the cable and external to said insulator, said second concentric conductor comprising a first end and a second end; a gap formed between the first concentric conductor and said first end of second concentric conductor; and a transceiver communicatively coupled to said first end of said second concentric conductor. - View Dependent Claims (40, 41, 42)
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43. A power line communications system, comprising
a cable having a first end and a second end and configured to carry a power signal having a voltage greater than one thousand volts, comprising: -
a center conductor, an insulator disposed external to the center conductor, and a first concentric conductor comprising a first end and a second end, and disposed over a first portion of the length of the cable external to said insulator; a first coupling conductor disposed concentrically around a second portion of the cable where said first concentric conductor is not present and external to said insulator, said first coupling conductor comprising a first end and a second end; a first gap formed between said first end of said first concentric conductor and said first end of said first coupling conductor; a first non-concentric cable portion extending from said second end of said first coupling conductor where there is no concentric conductor is present; a second coupling conductor disposed concentrically around a third portion of the cable where said first concentric conductor is not present and external to said insulator, said second coupling conductor comprising a first end and a second end; a second gap formed between said second end of said first concentric conductor and said first end of said second coupling conductor; and a second non-concentric cable portion extending from said second end of said second coupling conductor where no concentric conductor is present. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A method of communicating data signals via a power line cable configured to conduct a power signal having a voltage greater than one thousand volts, the power line cable comprising a center conductor, an insulator, and a concentric conductor external to the insulator, the method comprising:
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providing a gap in the concentric conductor, said gap having a first side and a second side; providing a discontinuity a first distance from the first side of the gap; receiving a first portion of the energy of the data signals via the concentric conductor on the first side of the gap; reflecting a second portion of the energy of the data signals via the discontinuity; and receiving a third portion of the energy of the data signal comprising a portion of reflected energy of the data via the concentric conductor on the first side of the gap. - View Dependent Claims (58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69)
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Specification