DE609814C - Device to shut off parts of electrical power distribution networks in which there are cable routes against the ingress of superimposed frequencies - Google Patents

Device to shut off parts of electrical power distribution networks in which there are cable routes against the ingress of superimposed frequencies

Info

Publication number
DE609814C
DE609814C DEA67952D DEA0067952D DE609814C DE 609814 C DE609814 C DE 609814C DE A67952 D DEA67952 D DE A67952D DE A0067952 D DEA0067952 D DE A0067952D DE 609814 C DE609814 C DE 609814C
Authority
DE
Germany
Prior art keywords
frequency
cable
sections
superimposed
earth
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
DEA67952D
Other languages
German (de)
Inventor
Dr-Ing Ernst Kirch
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.)
AEG AG
Original Assignee
AEG AG
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 AEG AG filed Critical AEG AG
Priority to DEA67952D priority Critical patent/DE609814C/en
Application granted granted Critical
Publication of DE609814C publication Critical patent/DE609814C/en
Expired legal-status Critical Current

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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
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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

Description

Einrichtung zur Absperrung von Teilen elektrischer Energieverteilungsnetze, in denen Kabelstrecken vorhanden sind, gegen den Eintritt von überlagerten Frequenzen Es ist bekannt, Netzteile gegen den Eintritt von überlagerten Frequenzen durch die Einschaltung von auf die Frequenz abgestimmten Sperrkreisen oder von Drosseln zu schützen. Diese Anordnungen haben dort, wo große Betriebsströme auftreten, den Nachteil, daß die Induktivitäten einen erheblichen Kupferaufwand notwendig machen. Da es ferner im allgemeinen zur Sperrung mehrerer Frequenzen durch Sperrkreise erforderlich ist, so viele Drosseln, wie Frequenzen abzusperren sind, zu benutzen, erwächst besonders an den Kopplungsstellen großer Netze ein erheblicher Aufwand an kostspieligen Abstimmitteln.Device for the isolation of parts of electrical power distribution networks, in which cable runs are available, against the ingress of superimposed frequencies It is known to protect against the entry of superimposed frequencies through the power supplies Activation of blocking circuits or chokes that are matched to the frequency protection. These arrangements have the disadvantage, where large operating currents occur, that the inductors require a considerable amount of copper. Since there is further is generally required to block multiple frequencies by blocking circuits, Using as many chokes as there are frequencies to be cut off grows in particular At the coupling points of large networks, a considerable amount of costly coordination means.

Die Erfindung bezieht sich auf eine Einrichtung zur Absperrung von Teilen elektrischer Energieverteilungsnetze, in denen Kabelstrecken vorhanden sind, gegen den Eintritt von überlagerten Frequenzen. Die Erfindung vermeidet die oben geschilderten Nachteile dadurch, daß Abstimmittel an durch Isoliermuffen unterteilte Abschnitte der metallischen Hülle, z. B. des Kabelmantels, der überlagerte Frequenz führenden Leiter angeschlossen sind. Hierbei wird nach der Erfindung bei Zweiphasenkopplung die metallische Hülle des Hin- und Rückleiters durch eine Drossel verbunden, deren Induktivität so gewählt ist, daß zusammen mit der verteilten Kapazität der einzelnen Hüllenabschnitte ein Resonanzkreis für die zu sperrende Frequenz geschaffen wird. Bei Einphasenkopplung dagegen werden die Sperrkreise oder sonstigen Abstimmittel, z. B. Drosseln, zwischen die einzelnen durch Isoliermuffen voneinander . getrennten Hüllenabschnitte, z. B. Abschnitte von Kabelmänteln, eingeschaltet. Um den verschlechternden Einfluß des Erdwiderstandes auf die Wirksamkeit des Resonanzkreises auszuschalten, werden die Kabelmäntel gegen die Umgebung durch Abschirmbleche abgeschirmt, die miteinander in gut leitender Verbindung stehen.The invention relates to a device for blocking Parts of electrical energy distribution networks in which there are cable routes, against the entry of superimposed frequencies. The invention avoids the above Disadvantages outlined in that tuning means divided by insulating sleeves Sections of the metallic shell, e.g. B. the cable jacket, the superimposed frequency leading conductors are connected. Here, according to the invention, with two-phase coupling the metallic shell of the outgoing and return conductors connected by a choke whose Inductance is chosen so that together with the distributed capacitance of each Shell sections a resonance circuit is created for the frequency to be blocked. In the case of single-phase coupling, on the other hand, the blocking circuits or other tuning means, z. B. throttles, between the individual by insulating sleeves from each other. separated Shell sections, e.g. B. Sections of cable sheaths turned on. To the deteriorating To eliminate the influence of the earth resistance on the effectiveness of the resonance circuit, the cable sheaths are shielded from the environment by shielding plates that are in good conductive connection with each other.

In der Zeichnung sind zwei Ausführungsbeispiele der Erfindung schematisch dargestellt, und zwar zeigen Abb. x ein Ausführungsbeispiel für die Zweiphasenkopplung und Abb:2 ein solches für die Einphasenkopplung. Bei dem Ausführungsbeispiel nach Abb. i sind i und 2 die Leiter, 3, 4, 4' -und-io, 1i, 12 Kabelhüllen, d. h. durch Isoliermuffen 5, 6, 7, 8, g gegeneinander isolierte Bleimantelabschnitte. Zwischen die einzelnen Bleimantelabschnitte, beispielsweise 3 und 1o, 4 und ii, 4' und 12 usw., sind nun Induktivitäten 13, 14, =5 geschaltet, die zusammen mit der verteilten Kapazität der Kabelseele gegen den Bleimantelabschnitt, die in der Abb. x punktiert angedeutet ist, einen Resonanzkreis für die jeweilig abzuriegelnde Frequenz darstellen. Dieser Resonanzkreis wirkt als Kurzschluß für die Überlagerungsfrequenz, deren Durchtritt nach dem anderen Ende der Leitung verhindert werden soll. Bei der Bemessung der Induktivität ist auch auf die verteilten Kapazitäten der Kabelmantelabschnitte gegen Erde Rücksicht zu nehmen. Außerdem muß auch noch der Widerstand beachtet werden, der parallel zum Resonanzkreis über die Erde, an welche kapazitiv beide Kabelmantelabscbnitte angeschlossen sind, vorhanden ist; sein Einfluß wird am besten dadurch beseitigt, daß die Kabelmäntel durch Metall hüllen 16, 17 gegen die Umgebung abgeschirmt werden, wobei die Metallhüllen 16 und 17 durch eine gut leitende metallische Verbindung =g miteinander verbunden werden. Hierdurch wird der schädliche Einfluß des Erdwiderstandes vollständig beseitigt.Two exemplary embodiments of the invention are shown schematically in the drawing shown, namely Fig. x show an embodiment for the two-phase coupling and Fig: 2 one for single-phase coupling. In the embodiment according to Fig. I are i and 2 the conductors, 3, 4, 4 '-and-io, 1i, 12 cable sheaths, i.e. H. by Insulating sleeves 5, 6, 7, 8, g lead jacket sections insulated from one another. Between the individual lead jacket sections, for example 3 and 1o, 4 and ii, 4 'and 12 etc., inductors 13, 14, = 5 are now connected, which together with the distributed Capacity of the cable core against the lead sheath section that in the Fig. X is indicated by dotted lines, a resonance circuit for the respective sealed off Represent frequency. This resonance circuit acts as a short circuit for the superposition frequency, whose passage to the other end of the line is to be prevented. In the Dimensioning of the inductance is also based on the distributed capacities of the cable sheath sections to be considerate of earth. In addition, the resistance must also be taken into account, the parallel to the resonance circuit via the earth, to which both cable sheath sections are capacitive are connected, is present; its influence is best removed by that the cable sheaths by metal sheaths 16, 17 are shielded from the environment, the metal shells 16 and 17 by a highly conductive metallic connection = g are connected to each other. This eliminates the harmful influence of earth resistance completely eliminated.

Bei dem Ausführungsbeispiel nach Abb.2 handelt es sich um ein überlagertes Netz mit Einphasenkopplung, d. h. der überlagerte Strom fließt nur in der einen Richtung über einen metallischen Leiter, während den Rückleiter die Erde bildet. Der Leiter i bei dem Ausführungsbeispiel nach Abb. 2 ist ebenfalls von einzelnen metallischen Hüllen umgeben, und es handelt sich auch hierbei um ein Stück Kabel, dessen Leiter i außer mit einer Betriebsfrequenz noch mit einer netzfremden Frequenz überlagert ist, deren Hindurchtritt nach dem anderen Leitungsende verwehrt werden soll. Die Kabelhülle ist in einzelne Abschnitte 3 und q. unterteilt, die gegeneinander durch eine Isoliermuffe 7 elektrisch isoliert sind. Mit einem Punkt des Hüllenabschnittes .3 und einem Punkt des Hüllenabschnittes q. ist eine Spule 2o verbunden. Der Kabelmantelabschnitt 3 ist entweder mit Erde 21 verbunden, oder es ist das eine Ende der Spule 2o an die Erde angeschlossen. Die Spule 2o wird so eingestellt, daß sie zusammen mit der verteilten Kapazität des Kabelstückes q. einen Kurzschluß gegen Erde für die überlagerte Signalfrequenz bildet. Der in der Abb. 2 dargestellte Parallelkondensator zur Spule 2o dient zur Feinabstimmung, kann aber auch allenfalls in FortfalI kommen. Infolge des Kurzschlusses für die Signalfrequenz gegen Erde wird die dem Leiter i überlagerte Frequenz von dem rechts neben dem Kabelabschnitt 3 liegenden Teil des Netzes nahezu ferngehalten.The embodiment according to Figure 2 is a superimposed one Network with single-phase coupling, d. H. the superimposed current only flows in one Direction via a metallic conductor, while the return conductor forms the earth. The conductor i in the embodiment of Fig. 2 is also of individual metallic sheaths, and this is also a piece of cable, whose conductor i is not only with an operating frequency but also with a non-network frequency is superimposed, whose passage to the other end of the line are blocked target. The cable sheath is divided into sections 3 and q. divided that against each other are electrically isolated by an insulating sleeve 7. With a point of the hull section .3 and a point of the envelope section q. a coil 2o is connected. The cable jacket section 3 is either connected to earth 21, or one end of the coil 2o is on connected to the earth. The coil 2o is set so that it works together with the distributed capacity of the cable section q. a short to earth for the superimposed Forms signal frequency. The parallel capacitor to the coil shown in Fig. 2 2o is used for fine-tuning, but can also be used if necessary. As a result of the short circuit for the signal frequency to earth, the one superimposed on conductor i Frequency of the part of the network lying to the right of the cable section 3 almost kept away.

Beide Einrichtungen nach der Erfindung haben somit den Vorteil, daß eine Absperrung von Netzteilen gegen den Eintritt überlagerter Frequenzen ermöglicht wird, ohne daß die Absperrmittel für die Betriebsstromstärke ausgelegt zu werden brauchen. Die Einrichtung nach der Erfindung eignet sich daher besonders für die Verwendung in Starkstrom- bzw. Hochspannungsnetzen. Die Anwendung der Erfindung ist auch unabhängig von der Wahl der Frequenzen, die dem Netz zu überlagern sind, so daß ihre Anwendung in gleicher Weise bei Anordnungen zur Hochfrequenztelephonie als auch bei Anordnungen zur Steuerung mittels ton- oder hochfrequenter Ströme vbrteilhaft ist.Both devices according to the invention thus have the advantage that a blocking of power supplies against the ingress of superimposed frequencies enables will be designed without the shut-off means for the operating current to need. The device according to the invention is therefore particularly suitable for Use in power or high voltage networks. Application of the invention is also independent of the choice of frequencies to be superimposed on the network, so that their application in the same way in arrangements for high-frequency telephony as well as with arrangements for control by means of tonal or high-frequency currents advantageous is.

Claims (6)

PATENTANSPRÜCHE: i. Einrichtung zur Absperrung von Teilen elektrischer Energieverteilungsnetze, in denen Kabelstrecken vorhanden sind, gegen den Eintritt von überlagerten Frequenzen, dadurch gekennzeichnet, daß die Abstimmmittel an durch . Isoliermuffen unterteilte Abschnitte der metallischen Hülle, z. B. des Kabelmantels, der die netzfremde Frequenz führenden Leiter angeschlossen sind. PATENT CLAIMS: i. Device for locking off electrical parts Energy distribution networks in which there are cable runs, against entry of superimposed frequencies, characterized in that the tuning means on by . Insulating sleeves subdivided sections of the metallic shell, e.g. B. the cable jacket, the conductors carrying the non-network frequency are connected. 2. Einrichtung nach Anspruch i, dadurch gekennzeichnet, daß für Hin- und Rückleiter je ein Leiter des Verteilungsnetzes dient und daß die metallischen Hüllenabschnitte des Hin- und Rückleiters durch eine Drossel verbunden sind, deren Induktivität so gewählt ist, daß zusammen mit der verteilten Kapazität der einzelnen Hüllenabschnitte ein Resonanzkreis für die zu sperrende Frequenz-geschaffen ist. 2. Establishment according to claim i, characterized in that one conductor each for the forward and return conductors of the distribution network and that the metallic shell sections of the back and forth Return conductor are connected by a choke, the inductance of which is selected so that that together with the distributed capacitance of the individual envelope sections a resonance circuit is created for the frequency to be blocked. 3. Einrichtung nach Anspruch i und 2, dadurch gekennzeichnet, daß die Drossel so bemessen bzw. eingestellt ist, daß auch die verteilte Kapazität des Kabelmantels gegen Erde berücksichtigt ist. q.. 3. Device according to claim i and 2, characterized in that the throttle is dimensioned or adjusted so that the distributed capacitance of the cable jacket to earth is also taken into account. q .. Einrichtung nach Anspruch i bis 3, dadurch gekennzeichnet, daß die Kabelmäntel gegen die Umgebung durch Abschirmbleche abgeschirmt sind. Device according to claim i to 3, characterized in that the cable sheaths against the surroundings are shielded by shielding plates. 5. Einrichtung nach Anspruch i bis q., dadurch gekennzeichnet, daß die Abschirmbleche der einzelnen überlagerten Phasen in gut leitender Verbindung miteinander stehen. 5. Device according to claim i to q., characterized in that the shielding plates of the individual superimposed Phases are in good conductive connection with each other. 6. Einrichtung nach Anspruch i, dadurch gekennzeichnet, daß die Überlagerung der Frequenz zwischen einer Phase und Erde erfolgt und daß die einzelnen durch Isoliermuffen voneinander getrennten Hüllenabschnitte durch auf die zu sperrende Frequenz abgestimmte Sperrkreise miteinander =elektrisch verbunden sind.6. Device according to claim i, characterized in that the superposition of the frequency between a phase and earth takes place and that the individual separated from each other by insulating sleeves Cover sections with each other by blocking circuits tuned to the frequency to be blocked = are electrically connected.
DEA67952D 1932-12-09 1932-12-09 Device to shut off parts of electrical power distribution networks in which there are cable routes against the ingress of superimposed frequencies Expired DE609814C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA67952D DE609814C (en) 1932-12-09 1932-12-09 Device to shut off parts of electrical power distribution networks in which there are cable routes against the ingress of superimposed frequencies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA67952D DE609814C (en) 1932-12-09 1932-12-09 Device to shut off parts of electrical power distribution networks in which there are cable routes against the ingress of superimposed frequencies

Publications (1)

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DE609814C true DE609814C (en) 1935-02-23

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DEA67952D Expired DE609814C (en) 1932-12-09 1932-12-09 Device to shut off parts of electrical power distribution networks in which there are cable routes against the ingress of superimposed frequencies

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