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Aerial power transmission line with lightning protection wires designed also to transmit rf signals
| Details |
Inventors: Ishkin, Vyacheslav K.;
Assignee:
Primary Examiner: Askin; Laramie E.
Assistant Examiner:
Attorney, Agent or Firm:
An aerial power transmission line comprises phase wires suspended from supports and a lightning protection system designed also to convey information in the form of r-f signals and having at least two wires 4 and 5 spaced a certain distance apart and forming an r-f data transmission channel. The wires 4 and 5 of the lightning protection system are suspended from the supports 3 one under the other in a substantially vertical plane. |
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DETAILED DESCRIPTION I claim: 1.
An aerial power transmission line comprising three phase transmission wires suspended from supports and spaced from each other in the horizontal direction and a lightning protection system comprising two pairs of ground wires, said ground wires being insulated from each other and arranged to form an rf channel for conveying information in the form of rf signals, the ground wires of each pair being suspended by a string of insulators from said supports one under the other, one pair of said wires being located above said three phase transmission wires and in a vertical plane between the middle one, and one of the outside phase wires, the other pair of said ground wires being located above the transmission wires in a vertical plane between the middle one and the other of said outside phase wires.
2.
The transmission line, according to claim 1, wherein the ground wires of one pair are located in a substantially horizontal plane with correspondingly respective ground wires of the other pair.
3.
The transmission line according to claims 1 or 2, wherein the supports include members, each carrying a said pair of wires, each of said wires in each pair being approximately equally spaced apart from a respective said member.
Description:
FIELD OF INVENTION The present invention relates to means for transmitting electric energy from one location to another and, in particular, to aerial power transmission lines.
Prior Art Known in the art are aerial power transmission lines comprising phase wires suspended from supports and lightning protection cables secured to said supports and designed also to convey information in the form of r-f signals (cf.
, for example, USSR Inventors Certificate No.
399,030, published in Discoveries, Inventions, Industrial Designs, Trade Marks, No.
38, Sept.
27, 1973, Bykhovski Ya.
L.
).
Such aerial power transmission lines, particularly those designed to transmit voltages of the order or 1000 kV and higher, have been generally unsatisfactory due to substantial power losses associated with the corona condition and a high radio-interference level, another disadvantage being the effect of noise level in r-f channels over the lightning protection cables thereof
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