GB629359A - An improved method of and apparatus for electric local and/or remote control - Google Patents

An improved method of and apparatus for electric local and/or remote control

Info

Publication number
GB629359A
GB629359A GB10910/47A GB1091047A GB629359A GB 629359 A GB629359 A GB 629359A GB 10910/47 A GB10910/47 A GB 10910/47A GB 1091047 A GB1091047 A GB 1091047A GB 629359 A GB629359 A GB 629359A
Authority
GB
United Kingdom
Prior art keywords
load
motor
frequency
normally
rotates
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
GB10910/47A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB10910/47A priority Critical patent/GB629359A/en
Publication of GB629359A publication Critical patent/GB629359A/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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

629,359. Switching-systems; control by variable-frequency currents. WHITBY, E. Oct. 23, -1947, Nos. 10910/47 and 25530/48. [Class 38 (iv)] [Also in Group XXXVII] A frequency-responsive switching system, particularly for controlling the connection and disconnection of a consumer's non-essential load circuits by slight frequency variations of a remote generating station normally supplying these circuits, comprises a constant speed motor and a synchronous motor which runs at a speed proportional to the frequency of the generating station, the motors driving, respectively, and in opposite directions, the crown wheels of a differential gear, the planet carrier of which rotates a shaft carrying cams controlling contacts in the load circuits if the speeds of the crown wheels are unequal. The system may be combined with a maximum demand or overload cut-out arrangement for disconnecting some of the consumer's load circuits when his totaldemand exceeds a predetermined value. The two motors may normally run at the same speed so that the planet carrier is normally stationary, load switching being effected by temporarily increasing or reducing the station frequency to cause rotation of the carrier. Alternatively, the synchronous motor 13, Fig. 2, may drive the crown wheel 6 of the differential gear 3 at a speed normally slightly in excess of that of the crown wheel 2 driven by the constant speed motor 1, so that the carrier of the planet wheel 14 normally rotates and, through gearing 17, 18 and a slipping clutch 19 rotates the cam-shaft 16 to a position such that the cam switches 22-23 permit energization of all load circuits. A stop 21 prevents the cam-shaft from turning past this position, whilst the clutch 19 allows continued rotation of the planet carrier. To shed load the station frequency is temporarily reduced to such a value that the speed of the crown wheel 6 is less than that of crown wheel 2 so that the cam shaft 16 rotates in the reverse direction and progressively disconnects the load circuits, the operation being arrested when sufficient load has been shed by increasing the station frequency to such a value that the two crown wheels run at equal speeds. The constant speed motor may be an electrically-wound spring clock motor or a shaded pole or synchronous motor provided with an escapement device. The maximum demand cut-out arrangement may comprise a relay 59, Fig. 3 (not shown) having normally closed contacts in the supply circuit to motor 13, the relay winding carrying the total consumer load current so as to cause opening of the contacts on attainment of a predetermined load current. Motor 13 is thereby de-energized, so that motor 1 rotates the planet carrier in a direction causing the cam switches to shed load until the total load current is insufficient to maintain the relay contacts open. The least important loads should then be disconnected by isolating switches to prevent hunting of the system.
GB10910/47A 1947-10-23 1947-10-23 An improved method of and apparatus for electric local and/or remote control Expired GB629359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB10910/47A GB629359A (en) 1947-10-23 1947-10-23 An improved method of and apparatus for electric local and/or remote control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10910/47A GB629359A (en) 1947-10-23 1947-10-23 An improved method of and apparatus for electric local and/or remote control

Publications (1)

Publication Number Publication Date
GB629359A true GB629359A (en) 1949-09-19

Family

ID=9976539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10910/47A Expired GB629359A (en) 1947-10-23 1947-10-23 An improved method of and apparatus for electric local and/or remote control

Country Status (1)

Country Link
GB (1) GB629359A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008342A1 (en) * 1988-02-23 1989-09-08 Standard Telephones And Cables Pty. Limited Electrical load shedding circuit
AU622888B2 (en) * 1988-02-23 1992-04-30 Alcatel Australia Limited Electrical load shedding circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008342A1 (en) * 1988-02-23 1989-09-08 Standard Telephones And Cables Pty. Limited Electrical load shedding circuit
AU622888B2 (en) * 1988-02-23 1992-04-30 Alcatel Australia Limited Electrical load shedding circuit

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