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GB1092638A - Improvements in means and methods of transmitting information - Google Patents

Improvements in means and methods of transmitting information

Info

Publication number
GB1092638A
GB1092638A GB23329/64A GB2332964A GB1092638A GB 1092638 A GB1092638 A GB 1092638A GB 23329/64 A GB23329/64 A GB 23329/64A GB 2332964 A GB2332964 A GB 2332964A GB 1092638 A GB1092638 A GB 1092638A
Authority
GB
United Kingdom
Prior art keywords
pulse
pulses
signal
capacitor
rectifier
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
Application number
GB23329/64A
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.)
London Electricity Board
Original Assignee
London Electricity Board
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 London Electricity Board filed Critical London Electricity Board
Priority to GB23329/64A priority Critical patent/GB1092638A/en
Publication of GB1092638A publication Critical patent/GB1092638A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H02J13/0001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using modification of a parameter of the network power signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52—Outage or fault management, e.g. fault detection or location

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)

Abstract

1,092,638. Signalling over power lines. LONDON ELECTRICITY BOARD, and A. J. BAGGOTT. Sept. 6, 1965 [June 5, 1964], No. 23329/64. Heading G4H. Information is transmitted over power lines by signals consisting of pulses produced in the voltage waveform, Fig. 2, by drawing current from the system for a period of time which is very short compared with the wavelength of the supply. The short pulses are made by switching the supply voltage across a capacitor 24, Fig. 1, by means of a silicon-controlled rectifier 22. The rectifier is triggered by a control circuit consisting of a phasing network 8 and a dekatron 9. When triggered, the rectifier connects the capacitor across the supply but as soon as the capacitor is fully charged the rectifier switches off. The position of the pulse in the cycle is determined by the phasing circuit 8 controlled by resistor 7. There may be a pulse in every cycle or one pulse in any number of cycles up to ten as determined by the connections of the dekatron. The output of the dekatron fires a thyratron 12 which applies a pulse to transformer 19. The secondary winding pulse is connected to the s.c.r. Between cycles, the capacitor discharges through a dioderesistor network 25. If pulses are required in both half-cycles a further circuit is necessary with a s.c.r. poled in the opposite sense. For three-phase systems the signal pulses are arranged to be at the peak of one of the waveforms so that the resultant pulses in the other two phases coincide and do not interfere with the main pulse. In the receiver circuit the fundamental A.C. waveform is filtered off and the signal pulses amplified and applied to monostable flip-flop which gives an output pulse of longer duration. These are rectified and smoothed to give an amplitude signal depending on the frequency of the signal pulses. Control signals for switching equipment on or off are produced by two threshold circuits having different levels. The higher level " off " signal is arranged to disable the lower level " on " signal.
GB23329/64A 1964-06-05 1964-06-05 Improvements in means and methods of transmitting information Expired GB1092638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23329/64A GB1092638A (en) 1964-06-05 1964-06-05 Improvements in means and methods of transmitting information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23329/64A GB1092638A (en) 1964-06-05 1964-06-05 Improvements in means and methods of transmitting information

Publications (1)

Publication Number Publication Date
GB1092638A true GB1092638A (en) 1967-11-29

Family

ID=10193851

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23329/64A Expired GB1092638A (en) 1964-06-05 1964-06-05 Improvements in means and methods of transmitting information

Country Status (1)

Country Link
GB (1) GB1092638A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2095358A1 (en) * 1970-06-19 1972-02-11 Tokyo Electric Power Co
US3714451A (en) * 1971-07-12 1973-01-30 Franklin Electric Co Inc Phase selective telemetry system
US3721830A (en) * 1971-06-18 1973-03-20 Tokyo Electric Power Co Pulse dip carrier system using ac distribution line

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2095358A1 (en) * 1970-06-19 1972-02-11 Tokyo Electric Power Co
US3721830A (en) * 1971-06-18 1973-03-20 Tokyo Electric Power Co Pulse dip carrier system using ac distribution line
US3714451A (en) * 1971-07-12 1973-01-30 Franklin Electric Co Inc Phase selective telemetry system

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