AT102449B - Protection device for two parallel alternating current lines fed from two sides. - Google Patents

Protection device for two parallel alternating current lines fed from two sides.

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Publication number
AT102449B
AT102449B AT102449DA AT102449B AT 102449 B AT102449 B AT 102449B AT 102449D A AT102449D A AT 102449DA AT 102449 B AT102449 B AT 102449B
Authority
AT
Austria
Prior art keywords
sides
alternating current
protection device
current lines
coil
Prior art date
Application number
Other languages
German (de)
Original Assignee
Siemens Schuckertwerke Wien
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 Wien filed Critical Siemens Schuckertwerke Wien
Application granted granted Critical
Publication of AT102449B publication Critical patent/AT102449B/en

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  • Emergency Protection Circuit Devices (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Schutzeinrichtung für zwei parallele von zwei Seiten her gespeiste Wechselstrom- leitungen. 



   Die Erfindung bezieht sich auf Wechselstromverteilungsanlagen, bei denen zwei Stationen durch zwei parallele Leitungen verbunden sind. Die Leitungen werden also von zwei Seiten her gespeist. Uni in solchen Anlagen beim Auftreten eines Fehlers nur die kranke Leitung abzuschalten, wird erfindungsgemäss am Anfang und am Ende der Leitungen je ein Wattrelais angeordnet, von dessen Ausschlag die Abschaltung des einen oder andern Schalters in den Leitungen abhängig gemacht ist. Die Stromspule des Relais wird von einem dem   zufliessenden Gesamtstrom   proportionalen Strom durchflossen. Die Spannungsspule ist in den Stromkreis der   Sekundärwicklungen   von Stromwandlern in den beiden Leitungen geschaltet. 
 EMI1.1 
 schliesst beim Auftreten eines Fehlers den Stromkreis der Auslösespule   21   oder 22 über die Kontakte 23 und 24.

   Die Spule 17 des Wattrelais ist mittels der Stromwandler 27 in Beziehung zu dem von der Zentrale 11 nach den Sammelschienen 12 fliessenden Gesamtstrom gebracht. Die Spule 18 liegt an den Klemmen der Drosselspule 26 im Stromkreis der   Sekundärwicklungen   19 und 20. 



   Die Einrichtung wirkt in folgender Weise : Die Spule 17 des Wattrelais wird dauernd von einem dem zu-bzw. abfliessenden Gesamtstrom proportionalen Strom durchflossen, während die Spannung an der Spule   18,   die beim normalen Betrieb gleich Null ist, wechselt, je nachdem beim Auftreten eines Fehlers die Spannung an der einen   Sekundärwicklung die   an der anderen überwiegt. 



   Sind die Ströme in den Leitungen 15 und 16 gleich stark, so bleibt der Kontakthebel des Wattrelais 17, 18 in Ruhe, weil an den Klemmen seiner Spule 18 keine Spannung herrscht. Tritt aber in einer Leitung, beispielsweise beim Punkt 25 der Leitung 15 ein Fehler auf, so steigt die Spannung in der   Sekundärwicklung   19 und es fliesst nun ein Strom in der Spannungsspule 18 des Relais. Der Kontakt 23 wird geschlossen und die Auslösespule 21 löst den Schalter 13 am oberen Ende der Leitung 15 aus. 



   Am andern Ende der Leitungen spielt sich derselbe Vorgang ab. Der Strom in dem Stromkreis der   Sekundärwicklungen   der Stromwandler hat eine solche Richtung, dass das   Wattrelais 37, 38 den   Kontakt   43 schliesst, wodurch   die Auslösung des Schalters   33 am   unteren Ende der Leitung 15 herbeigeführt wird. 



   Tritt der Fehler in der Leitung 16 ein, so schliessen die beiden Wattrelais die Kontakte   24 und 44,   wodurch die Schalter   15   und 34 ausgelöst werden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Protective device for two parallel alternating current lines fed from two sides.



   The invention relates to AC power distribution systems in which two stations are connected by two parallel lines. The lines are therefore fed from two sides. Uni to switch off only the sick line in such systems when a fault occurs, according to the invention at the beginning and at the end of the lines a watertelay is arranged, on the deflection of which the switching off of one or the other switch in the lines is made dependent. The current coil of the relay has a current proportional to the total current flowing through it. The voltage coil is connected to the circuit of the secondary windings of current transformers in the two lines.
 EMI1.1
 closes the circuit of the trip coil 21 or 22 via the contacts 23 and 24 when an error occurs.

   The coil 17 of the watt relay is brought into relation to the total current flowing from the control center 11 to the busbars 12 by means of the current transformer 27. The coil 18 is connected to the terminals of the choke coil 26 in the circuit of the secondary windings 19 and 20.



   The device works in the following way: The coil 17 of the Wattrelais is continuously controlled by one of the outgoing total current flows through proportional current, while the voltage on the coil 18, which is equal to zero during normal operation, changes, depending on the occurrence of a fault, the voltage on one secondary winding outweighs that on the other.



   If the currents in the lines 15 and 16 are equally strong, the contact lever of the water relay 17, 18 remains at rest because there is no voltage at the terminals of its coil 18. If, however, a fault occurs in a line, for example at point 25 of the line 15, the voltage in the secondary winding 19 increases and a current now flows in the voltage coil 18 of the relay. The contact 23 is closed and the trip coil 21 triggers the switch 13 at the upper end of the line 15.



   The same process takes place at the other end of the lines. The current in the circuit of the secondary windings of the current transformers has such a direction that the wading relay 37, 38 closes the contact 43, whereby the triggering of the switch 33 at the lower end of the line 15 is brought about.



   If the error occurs in the line 16, the two wattrelays close the contacts 24 and 44, whereby the switches 15 and 34 are triggered.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRÜCHE : 1. Schutzeinrichtung für zwei parallele von zwei Seiten her gespeiste Wechselstromleitungen, EMI1.2 <Desc/Clms Page number 2> EMI2.1 EMI2.2 PATENT CLAIMS: 1. Protective device for two parallel AC lines fed from two sides, EMI1.2 <Desc / Clms Page number 2> EMI2.1 EMI2.2
AT102449D 1923-10-25 1924-01-07 Protection device for two parallel alternating current lines fed from two sides. AT102449B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102449X 1923-10-25

Publications (1)

Publication Number Publication Date
AT102449B true AT102449B (en) 1926-01-25

Family

ID=5649344

Family Applications (1)

Application Number Title Priority Date Filing Date
AT102449D AT102449B (en) 1923-10-25 1924-01-07 Protection device for two parallel alternating current lines fed from two sides.

Country Status (1)

Country Link
AT (1) AT102449B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029039B (en) * 1955-11-23 1958-04-30 Arnstadt Fernmeldewerk Fuse strip for telecommunications systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029039B (en) * 1955-11-23 1958-04-30 Arnstadt Fernmeldewerk Fuse strip for telecommunications systems

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