US1859066A - Signaling system - Google Patents

Signaling system Download PDF

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Publication number
US1859066A
US1859066A US673191A US67319123A US1859066A US 1859066 A US1859066 A US 1859066A US 673191 A US673191 A US 673191A US 67319123 A US67319123 A US 67319123A US 1859066 A US1859066 A US 1859066A
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US
United States
Prior art keywords
conductors
high frequency
coupling
transmission
coupling conductor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US673191A
Inventor
Walter R G Baker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US673191A priority Critical patent/US1859066A/en
Priority to GB26538/24A priority patent/GB224542A/en
Application granted granted Critical
Publication of US1859066A publication Critical patent/US1859066A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals

Definitions

  • GENERAL ELEcmRIc sIGNALING 'SYSTEM Application led November My present invention relates to signaling systems and more particularly to systems in which high frequency signaling currents are transmitted over high potential electri- '5 cal transmission lines.
  • the coupling wire may preferably be located symmetrically with respect to the transmission conductors.
  • the coupling wire should be located at equal distances from all three of the transmission conductors.
  • the capacity between the coupling wire and earth will also be less than when the coupling wire is beneath the line conductors.
  • the potentials induced in the coupling wire from the transmission conductors will also in this case be substantially neutralized.
  • The. coupling wire .9 which. isenclosed within aI space bounded by.y the trans'- mission ⁇ conductors, is suspended between the towers 7 and 8,v and insulated therefrom by A strain insulators, 10.
  • a lead ll connects thc couplingwire 9 with earthanda signaling apparatus l2 is'connected tothe earth lead Il by the usual' couplingtransformer 13'.
  • the coupling wire is surrounded by thev transmission conductors, being located ⁇ entirely within thespacie. enclosed by planes passing through adjacent conductors on the four sides of the coupling wire. ⁇ It is;V also .synametri'callyl located with respect. to the transmission conductors, ⁇ being equidistant from' conductors 1,53, et, andw,
  • the arrangement described may be used either ⁇ forftran'smission or reception; thatv isy the apparatus '12 may be either aI transmittingor a receiving apparatus;
  • a high potential electrical transmission line comprising three or more conductors supported above the earth, a coupling conductor extending parallel to the conductors of said transmission line and symmetrically arranged with respect thereto, a high frequency apparatus for energizing s'aid coupling conductor and a connection between said coupling conductorand said high frequency apparatus.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Communication Cables (AREA)

Description

May 17, 1932. w. R. G. BAKER S-IGNALING SYSTEM Filed Nov. 6, 1923 by MMA JQ/12.
His ftor'ney.
Patented May 17, 1932l UNITED STATES WALTER R. G. BAKER, oF SCHENECTADY, NRW YORK, AssIeNoR. 'ro
COMPANY, A CORPORATION or NRW YORK ,PATENT oFllciajf,A
GENERAL ELEcmRIc sIGNALING 'SYSTEM Application led November My present invention relates to signaling systems and more particularly to systems in which high frequency signaling currents are transmitted over high potential electri- '5 cal transmission lines.
In systems of the type here involved it has been proposed to impress the high frequency signaling currents upon the power conductors by suspending a coupling wir-e j parallel to the power conductors and between overcome by so locating the coupling wire that it is surrounded by the transmission conductors. It will then be shielded to such an extent that most of the high frequency energy will be transferred to the transmission conductors and there will be little radiation.
In carrying my invention into effect the coupling wire may preferably be located symmetrically with respect to the transmission conductors. In the case of a single threephase transmission line, for example, the coupling wire should be located at equal distances from all three of the transmission conductors. When arranged in this way the capacity between the coupling wire and earth will also be less than when the coupling wire is beneath the line conductors. The potentials induced in the coupling wire from the transmission conductors will also in this case be substantially neutralized.
My invention will best be understood by reference to the following description taken in connection with the accompanying drawing in which I have indicated diagrammatically one way in which my invention may be carried into eEect.
I hav-e indicated in the drawing a transmission system comprising two three-phase transmission lines made up of conductors l to 6, inclusive. The transmission conductors are supported by towers of conventional e, 1923. serii No. 673,191.,
form of which only two, 7 vand y8 are indi# cated. The. coupling wire .9, which. isenclosed within aI space bounded by.y the trans'- mission `conductors, is suspended between the towers 7 and 8,v and insulated therefrom by A strain insulators, 10. A lead ll connects thc couplingwire 9 with earthanda signaling apparatus l2 is'connected tothe earth lead Il by the usual' couplingtransformer 13'.
A r'It will be noted thatthe coupling wire is surrounded by thev transmission conductors, being located `entirely within thespacie. enclosed by planes passing through adjacent conductors on the four sides of the coupling wire.` It is;V also .synametri'callyl located with respect. to the transmission conductors, `being equidistant from' conductors 1,53, et, andw,
and from conductors: 2 and .5. The arrangement described may be used either `forftran'smission or reception; thatv isy the apparatus '12 may be either aI transmittingor a receiving apparatus;
Y WhilezI liayefsiiown and describedon'ly one embodiment of my' invention,r it.` will' `be Tap;
parent that many modifications of my in'lf vention .may be made `without, departing fromthescope: thereof as set; forth: vinf'tlie appended claimsi 1. 'V I, -i .Y
met I claimfasinewand desire to secure 'by Lettersl l13a-tentv of the United States, is:-
l. The combination in ahiglr frequency transm-ttingsystem ofV a high potential electrical transmission line comprising three or more conductors supported above the earth, a coupling conductor extending parallel to the conductors of said transmission line and symmetrically arranged with respect thereto, a high frequency apparatus for energizing s'aid coupling conductor and a connection between said coupling conductorand said high frequency apparatus.
2. The combination in a high frequency transmitting system of a high potential electrical transmission line supported above the earth, said transmission line comprising more than two conductors arranged in intersectying planes, a coupling conductor extending parallel to the conductors of said transmission line and located entirely within a space enclosed by planes passing through adjacent conductors, high frequency apparatus for energizing said coupling conductor and a connection between said coupling wire and said high frequency apparatus.
l 3. The combination in a high frequency transmitting system of an electric transmission line supported above the earth and comprising a plurality of electrical conductors arranged to enclose a substantially rectangular space, a coupling conductor extending parallel to the conductors of said transmission line and located within the space enclosed by said conductors, high frequency apparatus for energizing said coupling conductor and a connection between said coupling conductor and said high frequency apparatus.
4. The combination in a high frequency transmitting system of an electrical transmission line supported above the earth, said zo transmission line comprising more than two conductors arranged in intersecting planes, a coupling conductor extending parallel to the conductors of said transmission line and disposed Within a space bounded by the conductors of the transmission system, high frequency apparatus for energizing said coupling conductor and a connection between said coupling conductor and said high frequency apparatus.
ao 5. The combination in a high frequency transmitting system of an electric transmissiony line comprising a plurality of conductors supported above the earth, a coupling conductor extending parallel to the conduc- 36 tors of said transmission lines, certain ofthe conductors of thetransmission lines being disposed between the coupling conductor and the earth and in such proximity to said coupling conductor and to each other that there i 40 is little or no radiation between the coupling conductor and the earth, high frequency apparatus for energizing said coupling conductor and a connection between said high frequency apparatus and said coupling conductor. In witness whereof, I have hereunto set my hand this 5th day of November, 1923.
WALTER R. G. BAKER.
US673191A 1923-11-06 1923-11-06 Signaling system Expired - Lifetime US1859066A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US673191A US1859066A (en) 1923-11-06 1923-11-06 Signaling system
GB26538/24A GB224542A (en) 1923-11-06 1924-11-06 Improvements in high frequency electric signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US673191A US1859066A (en) 1923-11-06 1923-11-06 Signaling system

Publications (1)

Publication Number Publication Date
US1859066A true US1859066A (en) 1932-05-17

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ID=24701645

Family Applications (1)

Application Number Title Priority Date Filing Date
US673191A Expired - Lifetime US1859066A (en) 1923-11-06 1923-11-06 Signaling system

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US (1) US1859066A (en)
GB (1) GB224542A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012733A (en) * 1975-10-16 1977-03-15 Westinghouse Electric Corporation Distribution power line communication system including a messenger wire communications link

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012733A (en) * 1975-10-16 1977-03-15 Westinghouse Electric Corporation Distribution power line communication system including a messenger wire communications link

Also Published As

Publication number Publication date
GB224542A (en) 1925-02-26

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