Intra-Bundle Power Line Carrier Current System
First Claim
1. A system for transmitting a carrier current having two polarities on a high voltage electric power transmission line, in which the power transmission line comprises multiple phases for an ac transmission line, or multiple poles for a dc transmission line, and in which at least one phase, or one pole, comprises at least three spaced, separate conductors connected in parallel that carry the power being transmitted by that phase or pole, the spaced, separate conductors being arranged in two groups, a first, outer group comprising at least two spaced conductors that lie generally along an outer perimeter, and a second, inner group comprising one or more conductors located within the perimeter, the system comprising:
- a carrier current transmitter for transmitting both polarities of the carrier current;
circuitry for electrically connecting one polarity to the first group of conductors within one phase or one pole; and
circuitry for electrically connecting the second polarity to the second group of conductors of the same phase or pole.
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Accused Products
Abstract
A system including associated equipment for transmitting radio-frequency power line carrier signals on high voltage ac or dc transmission lines within a multi-conductor bundle, one path for which is provided by one or more conductors located at the center of the bundle, and the other by the remaining conductors connected in electrical parallel and arrayed in a generally circular pattern around the center. Insulated conductor spacers hold the conductors in their symmetrical configuration and insulate the center conductor, allowing it to serve as a radio frequency path similar to that in a conventional coaxial cable. The system provides low attention, low vulnerability to external noise and low radiation of the carrier signal while providing redundant channels—three for ac transmission lines and two for bipolar dc transmission lines.
217 Citations
25 Claims
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1. A system for transmitting a carrier current having two polarities on a high voltage electric power transmission line, in which the power transmission line comprises multiple phases for an ac transmission line, or multiple poles for a dc transmission line, and in which at least one phase, or one pole, comprises at least three spaced, separate conductors connected in parallel that carry the power being transmitted by that phase or pole, the spaced, separate conductors being arranged in two groups, a first, outer group comprising at least two spaced conductors that lie generally along an outer perimeter, and a second, inner group comprising one or more conductors located within the perimeter, the system comprising:
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a carrier current transmitter for transmitting both polarities of the carrier current; circuitry for electrically connecting one polarity to the first group of conductors within one phase or one pole; and circuitry for electrically connecting the second polarity to the second group of conductors of the same phase or pole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for transmitting a carrier current having two polarities on a high voltage electric power transmission line, in which the power transmission line comprises multiple phases for an ac transmission line, or multiple poles for a dc transmission line, and in which at least one phase, or one pole, comprises at least three spaced, separate conductors connected in parallel that carry the power being transmitted by that phase or pole, the spaced, separate conductors being arranged in two groups, a first, outer group comprising at least two spaced conductors that lie along a generally circular outer perimeter, and a second, inner group comprising one or more conductors located within the perimeter, in which each of the conductors of the first group are essentially equidistant from one another, and each of the conductors of the first group are essentially equidistant from the second group of conductors, the system comprising:
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a spacer apparatus that holds the conductors of the first and second groups in place relative to one another and insulates the second group of conductors from the first group of conductors so as to provide an intra-bundle path for radio frequency signals between the two conductor groups, the spacer apparatus constructed so that it opens during installation so that it can be coupled to the second group of conductors, and then closes for permanent operation; a carrier current transmitter for transmitting both polarities of the carrier current; circuitry for electrically connecting one polarity to the first group of conductors within one phase or one pole; and circuitry for electrically connecting the second polarity to the second group of conductors of the same phase or pole.
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20. A system for transmitting a carrier current having two polarities on a high voltage electric power transmission line, comprising:
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a power transmission line comprising multiple phases for an ac transmission line, or multiple poles for a dc transmission line, at least one phase, or one pole, comprising at least three spaced, separate conductors connected in parallel that carry the power being transmitted by that phase or pole, the spaced, separate conductors being arranged in two groups, a first, outer group comprising at least two spaced conductors that lie along a generally circular outer perimeter, and a second, inner group comprising one or more conductors located within the perimeter; a carrier current transmitter for transmitting both polarities of the carrier current; circuitry for electrically connecting one polarity to the first group of conductors within one phase or one pole; and circuitry for electrically connecting the second polarity to the second group of conductors of the same phase or pole. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification