GB281275A - - Google Patents
Info
- Publication number
- GB281275A GB281275A GB30678/27A GB3067827A GB281275A GB 281275 A GB281275 A GB 281275A GB 30678/27 A GB30678/27 A GB 30678/27A GB 3067827 A GB3067827 A GB 3067827A GB 281275 A GB281275 A GB 281275A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signalling
- currents
- leads
- transformers
- frequency
- 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
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
- H02J13/00009—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 pulsed signals
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- 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
- 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)
- Control Of Eletrric Generators (AREA)
Abstract
281,275. Compagnie pour la Fabrication des Compteurs et MatÚriel d'Usines Ó Gaz. Nov. 27, 1926, [Convention date]. Signalling over power circuits. - Polyphase signalling currents of musical frequency are superimposed on power circuits distributing polyphase low frequency currents by transformers, the arrangement being such that the currents of power frequency fed to the signalling generator, and vice-versa, are substantially reduced or eliminated. In three-phase systems, three three-phase transformers may be so connected that the sum of the three phases of power frequency is fed to each winding of the signalling generator and vice-versa, the transformers being balanced so that the resultant sum is practically zero. In the arrangement shown, three-phase signalling current from the leads' 40, 41, 42 is superimposed on three separate feeders A, B, C from the three-phase bus-bars 1, 2, 3. The leads 4, 5, 6 of each feeder include the secondary windings of three-phase transformers such as 13, 14, 15, the primaries of which are connected across the leads 40, 41, 42. The leads 40, 41 are connected across the transformer 13 of feeder A, across the transformer 18 of feeder B, and across the transformer 20 of feeder C, and the leads 40, 42 and 41, 42 are similarly connected to the other transformers, so that the bus-bars 1, 2, 3 are practically at equal potentials as regards the signalling currents, and conversely the leads 40. 41, 42 are at equal potentials as regards the power currents. In case the system becomes unbalanced, circuits tuned to the signalling frequency and power frequency may be connected across the leads 1, 2, 3 and 40, 41, 42 respectively. The currents of power frequency led to the signalling generator may be further limited by the employment of transformers of the air-gap type which act efficiently for current of signalling frequency but not for currents of power frequency. Further limitation of interference may be obtained by condensers connected in series with the primaries of the superimposing transformers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR281275T | 1926-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB281275A true GB281275A (en) | 1928-07-26 |
Family
ID=31897803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30678/27A Expired GB281275A (en) | 1926-11-27 | 1927-11-15 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB281275A (en) |
-
1927
- 1927-11-15 GB GB30678/27A patent/GB281275A/en not_active Expired
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