DE472690C - Circuit for securing more than two parallel lines of the same phase against undesired currents - Google Patents

Circuit for securing more than two parallel lines of the same phase against undesired currents

Info

Publication number
DE472690C
DE472690C DES79280D DES0079280D DE472690C DE 472690 C DE472690 C DE 472690C DE S79280 D DES79280 D DE S79280D DE S0079280 D DES0079280 D DE S0079280D DE 472690 C DE472690 C DE 472690C
Authority
DE
Germany
Prior art keywords
coils
same phase
securing
circuit
relay
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
DES79280D
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens 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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Application granted granted Critical
Publication of DE472690C publication Critical patent/DE472690C/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

  • Emergency Protection Circuit Devices (AREA)

Description

Schaltung zur Sicherung von mehr als zwei parallelen Leitungen gleicher Phase gegen unerwünschte Ströme Zusatz zum Patent 330 667 Die Erfindung betrifft eine weitere Ausgestaltung der Schutzschaltung gegen Fehlerstrom paralleler Leiter gleicher Phase gemäß dem Hauptpatent 33o 667, deren Wirkung auf dem durch Stromwandler bemerkbar gemachten Unterschied der Ströme in deaz einzelnen: Leitern beruht, indem die Sekundärspulen der Wandler zu einem Vieleck zusammengeschaltet sind, zwischen dessen Ecken die Spulen von Relais derart geschaltet sind, daß die Relais von der Differenz der Ströme in den Sekundärspulen der Wandler beeinflußt werden.Circuit for securing more than two parallel lines of the same phase against undesired currents Addition to patent 330 667 The invention relates to a further embodiment of the protective circuit against fault currents in parallel conductors of the same phase according to the main patent 33o 667, the effect of which on the difference in currents made noticeable by current transformers in deaz individual: conductors is based in that the secondary coils of the transducers are interconnected to form a polygon, between the corners of which the coils of relays are connected in such a way that the relays are influenced by the difference in the currents in the secondary coils of the transducers.

Statt die Spulen der Relais je zwischen eine Ecke des Vielecks und einen gemeinsamen Sternpunkt zu schalten. werden gemäß, der Erfindung die Relais mit je zwei Spulen versehen, deren Verbindungspunkt mit einer Ecke des Stromwandlervielecks verbunden ist, während die Spulen der verschiedenen Relais untereinander zu einem dem Stromwandlervieleck entsprechenden Vieleck vereinigt sind.Instead of the coils of the relay each between a corner of the polygon and to switch a common star point. according to the invention, the relays each provided with two coils, the connection point of which with a corner of the current transformer polygon is connected, while the coils of the various relays are connected to one another the current transformer polygon corresponding polygon are combined.

In der Abbildung ist ein Ausführungsbeispiel der Erfindung dargestellt. 11, 12, 13, 14 sind die parallel zueinander liegenden; Leiter gleicher Phase eines Übertragungssysterns. 111, 12 T, 131, 141 sind die zu einem Vieleck zusammengeschlossenen Sekundärspulen der in je einem der vier zu schützenden Leiter liegenden Stromwandler. Jedes der vier Relais 17, 27, 37, 47 besitzt zwei Spulen 171 und- 172, bzw. 271 und 272, bzw. 371 und 372, b_ZW- 471 und 472, die sämtlich untereinander zu einem Ring zusammengeschaltet sind. Die Verbindungspunkte der Spulen jedes Relais sind mit je einer Ecke des von den Sekundärspulen der Stromwandler gebildeten Vielecks verbunden. Die Spulen jedes: Relais sind gleichsinnig gewickelt, so daß sie im, gleichen Sinne magnetisieren, wenn ein Strom sie, von ihrem gemeinsamen Verbindungspunkt mit einer Ecke des Stromwandlervielecks her, durchfließt. Ein Strom jedoch, der in das freie Ende einer Relaisspule eintritt und aus dem freien Ende der anderen Spule des gleichen Relais austritt, übt keine magnetisierende Wirkung aus.In the figure, an embodiment of the invention is shown. 11, 12, 13, 14 are the parallel to each other; Head of same phase one Transmission systems. 111, 12 T, 131, 141 are those joined together to form a polygon Secondary coils of the current transformers located in one of the four conductors to be protected. Each of the four relays 17, 27, 37, 47 has two coils 171 and 172, or 271 and 272, or 371 and 372, b_ZW- 471 and 472, all of which together form one Ring are interconnected. The connection points of the coils of each relay are each with one corner of the polygon formed by the secondary coils of the current transformers tied together. The coils of each: relay are wound in the same direction so that they are same sense when a current magnetize them, from their common connection point with one corner of the current transformer polygon, flows through. One stream, however, that enters the free end of one relay coil and out the free end of the other Coil of the same relay emerges, has no magnetizing effect.

Die Wirkungsweise dieser Einsrichtung ist die folgende: Angenommen, es tritt im Kabel 11 ein größerer Strom- auf als in den anderen Kabeln, dann wird in der Sekundärwicklung des Stromwandlers i i i hin größerer Strom fließen als in den übrigen Sekundärwicklungen.The mode of operation of this device is as follows: Assuming that there is a greater current in cable 11 than in the other cables, then a larger current will flow in the secondary winding of the current transformer i i i than in the other secondary windings.

Der Differenzstrom wird vom Punkt a des Stromwandlervielecks über die Relaisspulen. nach dem Punkt b des Stromwandlervielecks fließen. Dieser Differenzstrom wird den durch die Relaisspulen gebildeten Ring in zwei Zweigen durchfließen, deren einer durch die Relaisspulen 27, und 172 gebildet ist, und deren anderer durch die Relaisspulen 272, 374 372, 471, 472 und i71 gebildet ist. Wie man sieht, unterstützen sich die beiden Zweigströme in den Relais 27 und 17, während in den übrigen Relais die magnetisierende Wirkung der Spulen sich gegenseitig aufhebt. Die Einrichtung kann also so getroffen sein,, da,ß bei einem Fehlerstrom im Kabel i i nur die beiden an den Stromwandler i i i angeschlossenen Relais 27 tind 17 ansprechen, während die übrigen Relais in Ruhe bleiben. Schaltet man in; bekannter Weise die Relais derart, da.ß sie bei gemeinsamem Ansprechen das zwischen ihnen liegende Kabel abschalten oder zur Anzeige bringen, so kann man erreichen, daß nur das fehlerhafte Kabel abgeschaltet oder angezweigt wird..The differential current is from point a of the current transformer polygon via the relay coils. flow after point b of the current transformer polygon. This differential current will flow through the ring formed by the relay coils in two branches, one of which is formed by the relay coils 27 and 172 and the other is formed by the relay coils 272, 374, 372, 471, 472 and i71. As you can see, the two branch currents support each other in the relays 27 and 17, while in the other relays the magnetizing effect of the coils cancel each other out. The device can therefore be made so that only the two relays 27 and 17 connected to the current transformer iii respond in the event of a fault current in the cable ii, while the other relays remain idle. If you switch to; As is known, the relays in such a way that when they respond together they switch off the cable lying between them or display it, it can be achieved that only the faulty cable is switched off or branched off ..

Im Falle von parallelgeschalteten Mehrphasensystemen kann man in an sich bekannter Weise die Stromwandler zweier verschiedener Phasen in. Achterstellung zusammenkuppeln. Man kann ferner mit den Kabelschaltern eine Anzahl von Hilfskontakten verbinden, . welche nach Öffnung der Schalter den Stromwandler des abgeschalteten Kabels und die zu diesem Kabel gehörigen Relais durch überbrückung oder durch Abschälten außer Betrieb setzen, so daß, für die übrigbleibenden Kabel ein Schutzsystem gebildet wird, welches in der gleichen Weise wirkt wie das ursprüngliche System.In the case of multi-phase systems connected in parallel, an As is known, the current transformers of two different phases are shown in figure eight couple together. You can also use the cable switches to set up a number of auxiliary contacts associate, . which, after opening the switch, disconnects the current transformer of the Cable and the relays belonging to this cable by bridging or by switching off put it out of operation so that a protection system is formed for the remaining cables which acts in the same way as the original system.

Um zu verhindern, daß die Schutzschaltung während des Zuschaltens eines Kabels an ,einem Ende anspricht, während das andere Ende noch nicht. angeschlossen ist, könne noch weitere Hilfskontakte angeordnet werden, welche die zu diesem Kabel gehörigen Einrichtungen wirkungslos machen, solange dies erforderlich ist. Mit diesen. Hilfskontakten können dann zugleich Apparate verbunden werden, welche zur Kontrolle des Kabels dienen.To prevent the protective circuit from being switched on of a cable, one end responds while the other end does not yet. connected is, further auxiliary contacts can be arranged, which are connected to this cable make the associated facilities ineffective for as long as this is necessary. With these. Auxiliary contacts can then be connected to devices for control purposes of the cable.

Claims (1)

PATRNTANSPRUC$ Schaltung zur Sicherung von mehr als zwei parallelen Leitungen gleicher Phase gegen unerwünschte Ströme gemäß Patent 33o 667 mit Hilfe von -Stromwandlern, deren Sekundärspulen zu einem Vieleck verbunden sind, an dessen einzelnen Ecken je ein Relais. angeschlossen ist, dadurch gekennzeichnet, daß jedes Relais mit einem gleichsinnig gewickelten Spulenpaar versehen ist, dessen Verbindungspunkt an eine Ecke des Stromwandlervielerksangeschlossen ist und dessen freie Enden ' mit den freien Enden je einer weiteren. Relaisspule zu einem dem Stromwandlervieleck entsprechenden Vieleck zusammengeschaltet sind.PATRNTANSPRUC $ circuit for securing more than two parallel Same phase lines against unwanted currents according to patent 33o 667 with the help of current transformers, whose secondary coils are connected to form a polygon, at its a relay for each corner. is connected, characterized in that each Relay is provided with a co-wound pair of coils, the connection point of which is connected to a corner of the current transformer and its free ends' with the free ends one more each. Relay coil to one of the current transformer polygons corresponding polygon are interconnected.
DES79280D 1926-05-27 1927-04-20 Circuit for securing more than two parallel lines of the same phase against undesired currents Expired DE472690C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL472690X 1926-05-27

Publications (1)

Publication Number Publication Date
DE472690C true DE472690C (en) 1929-08-27

Family

ID=19786484

Family Applications (1)

Application Number Title Priority Date Filing Date
DES79280D Expired DE472690C (en) 1926-05-27 1927-04-20 Circuit for securing more than two parallel lines of the same phase against undesired currents

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Country Link
DE (1) DE472690C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19944364B4 (en) * 1999-09-16 2006-09-28 Danfoss A/S Installation valve for a sectional radiator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19944364B4 (en) * 1999-09-16 2006-09-28 Danfoss A/S Installation valve for a sectional radiator

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