DE354770C - Circuit arrangement of the overcurrent protection of lines connected in parallel - Google Patents

Circuit arrangement of the overcurrent protection of lines connected in parallel

Info

Publication number
DE354770C
DE354770C DEA33181D DEA0033181D DE354770C DE 354770 C DE354770 C DE 354770C DE A33181 D DEA33181 D DE A33181D DE A0033181 D DEA0033181 D DE A0033181D DE 354770 C DE354770 C DE 354770C
Authority
DE
Germany
Prior art keywords
circuit arrangement
parallel
relay
lines connected
overcurrent protection
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
DEA33181D
Other languages
German (de)
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 DEA33181D priority Critical patent/DE354770C/en
Application granted granted Critical
Publication of DE354770C publication Critical patent/DE354770C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/267Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for parallel lines and wires

Landscapes

  • Relay Circuits (AREA)

Description

Schaltungsanordnung des. Überstromschutzes parallel geschalteter Leitungen. In der Patentschrift 337314 ist eine Schaltungsanordnung mm Schutze parallel geschalteter Leitungen gegen Überströme beschrieben, bei :der am Anfang und Ende der Leitungen Überstromrelais mit von der Stromstärke abhängiger Auslösezeit eingebaut sind, die im normalen Betriebe, d. h. wenn die parallel geschalteten Leitungen sämtlich im Betrieb sind, durch ein die gleichmäßige Stromverteilung in Aden Leitungen kontrollierendes Steuerrelais gesperrt ,sind. Beim Auftreten eines Fehlers innerhalb des geschützten Leitungssystems gibt .das Steuerrelais die Überstromrelais frei, und die vom größten Strom durchflossene fehlerhafte Leitung wird abgeschaltet.Circuit arrangement of the overcurrent protection of lines connected in parallel. In the patent 337314 a circuit arrangement is mm protectors connected in parallel Lines against overcurrents described for: the one at the beginning and end of the lines Overcurrent relays are built in with a tripping time that depends on the current strength in normal operations, d. H. if the lines connected in parallel are all in Are in operation, by controlling the even distribution of current in the Aden lines Control relays are locked. When an error occurs within the protected The control relay releases the overcurrent relays, and those of the largest The faulty line flowing through the current is switched off.

Um die Auslösung .des Überstromrelais nicht nur von,der Höhe des Überstromes, sondern auch von der Richtung des Energieflusses abhängig zu machen, wird nach der Erfindung an Stelle .des lediglich vom Strom abhängigen Steuerrelais ein Wattrelais verwendet, das beim Lauf nach !der einen Richtung das eine Überstromrelais, beim Lauf nach der anderen Richtung das andere Überstromrelais sperrt bzw. freigibt.In order to trigger the overcurrent relay not only from, the level of the overcurrent, but also to make it dependent on the direction of the flow of energy, according to the Invention instead of the control relay, which is only dependent on the current, a wattrelay used, the one overcurrent relay when running in one direction Run in the other direction the other overcurrent relay blocks or enables.

Ein solches Wattrelais spricht aber bei sehr niedrigen Spannungen nicht mit Sicherheit an, würde also bei einem in unmittelbarer Nähe auftretenden Kurzschluß unwirksam sein. Um idiesen Fehler izubeheben, kann man das im Hauptpatent hesohriebene .Stromrelai.s R neben dem Wattrelais beibehalten. Dabei ist die Anordnung so zu treffen, daß das Stromrelais R :die beiden an einem Ende der Leitung liegenden Relais A freigibt, während das Wattrelais die Auswahl zwischen ,diesen beiden Relais besorgt.Such a wading relay speaks at very low voltages not with certainty, so would occur with one in the immediate vicinity Short circuit will be ineffective. In order to correct this error, this can be found in the main patent Retained hesohriebene .Stromrelai.s R next to the wattrelais. Here is the arrangement so that the current relay R: the two lying at one end of the line Relay A enables, while the water relay makes the choice between these two relays concerned.

Der Vorteil oder neuen Anordnung besteht darin, d#aß ein Versagen, id. h. ein Abschalten auch der gesunden Leitung nur dann eintreten kann, wenn sowohl die Spannung an der Stelle, iwo (die Relais eingebaut sind, zu niedrig ist als .auch wenn an dem entgegengesetzten Ende der Leitung keine Energie liefernden Maschinen oder Zuleitungen angeschlossen sind. Eine unerwünschte Abschaltung einer gesunden Leitung würde also nur :dann eintreten, wenn die genannten Fälle gleichzeitig auftreten, ein Fall, der im praktischen Betriebe wohl äußerst selten vorkommen wird.The advantage, or rearrangement, is that a failure, id. H. a shutdown of the healthy line can only occur if both the voltage at the point iwo (the relays are built in is too low than .auch when there are no power-supplying machines at the opposite end of the line or supply lines are connected. An unwanted shutdown of a healthy Management would only: then occur if the aforementioned cases occur simultaneously, a case that will probably occur extremely rarely in practical operations.

Das Steuerrelais R nach dem Hauptpatent und das Wattrelais nach dem vorliegenden Zusatzpatent :können in einem einzigen Relais vereinigt werden, das beispielsweise nach der Patentschrift 327631 gebaut sein kann.The control relay R according to the main patent and the Wattrelais according to the present additional patent: can be combined in a single relay that can be built for example according to the patent 327631.

Claims (2)

PATENTANSPRÜCHE: I. Schaltungsanordnung des überstromschutzes parallel geschalteter Leitungen nach Patent 337314, dadurch gekennzeichnet, .daß an Stelle des Steuerrelais oder außer diesem ein .die Überstromrelais überwachendes Wattrelais angeordnet ist. PATENT CLAIMS: I. Circuit arrangement of the overcurrent protection of lines connected in parallel according to patent 337314, characterized in that a wattrelay monitoring the overcurrent relay is arranged in place of the control relay or in addition to it. 2. Schaltungsanordnung nach Anspruch t, dadurch gekennzeichnet, daß das Steuerrelais und das Wattrelais in einem einzigen Relais vereinigt sind.2. Circuit arrangement according to claim t, characterized in that that the control relay and the Wattrelais are combined in a single relay.
DEA33181D 1920-03-27 1920-03-27 Circuit arrangement of the overcurrent protection of lines connected in parallel Expired DE354770C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA33181D DE354770C (en) 1920-03-27 1920-03-27 Circuit arrangement of the overcurrent protection of lines connected in parallel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA33181D DE354770C (en) 1920-03-27 1920-03-27 Circuit arrangement of the overcurrent protection of lines connected in parallel

Publications (1)

Publication Number Publication Date
DE354770C true DE354770C (en) 1922-06-15

Family

ID=6928051

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA33181D Expired DE354770C (en) 1920-03-27 1920-03-27 Circuit arrangement of the overcurrent protection of lines connected in parallel

Country Status (1)

Country Link
DE (1) DE354770C (en)

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