DE572189C - Protective inductor to limit the short-circuit current in AC networks - Google Patents
Protective inductor to limit the short-circuit current in AC networksInfo
- Publication number
- DE572189C DE572189C DEB147546D DEB0147546D DE572189C DE 572189 C DE572189 C DE 572189C DE B147546 D DEB147546 D DE B147546D DE B0147546 D DEB0147546 D DE B0147546D DE 572189 C DE572189 C DE 572189C
- Authority
- DE
- Germany
- Prior art keywords
- coil
- short
- networks
- limit
- circuit current
- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
Drosselspulen zur Begrenzung des Kurzschlußstromes in Wechselstromnetzen sind bekannt. Der Nachteil dieser Spulen besteht darin, daß sie eine Spannungsverschlechterung bewirken.Choke coils for limiting the short-circuit current in AC networks are known. The disadvantage of these coils is that they cause voltage degradation cause.
Zweck vorliegender Erfindung^ ist, diesen Nachteil zu vermeiden, und zwar geschieht dies dadurch, daß die voneinander getrennten oder über Widerstände miteinander verbundenen Stromverbraucher an den Enden der Drosselspule und die Stromquelle zwischen den Spulenenden derart angeschlossen werden, daß sich beim normalen Betrieb die Amperewindungszahlen beider Spulenteile aufheben und ein Kraftlinienfluß nicht entsteht. Die Drosselwirkung der Spule kommt also im normalen Betrieb nicht zur Geltung, während dagegen im Kurzschlußfalle die Amperewindungszahl in dem einen Spulenteil überwiegt und dadurch die Induktivität der Drossel zur Wirkung kommt.The purpose of the present invention is to avoid this disadvantage, and indeed it happens this is achieved by the fact that they are separated from one another or connected to one another via resistors Power consumers at the ends of the reactor and the power source between the coil ends are connected in such a way that during normal operation the Cancel the number of ampere turns of both coil parts and there is no flow of force lines. The choke effect of the coil does not come into play during normal operation on the other hand, in the event of a short circuit, the number of ampere turns predominates in one part of the coil and thereby the inductance of the choke comes into play.
Es empfiehlt sich, an der Spule mehrere Anzapfstellen anzuordnen, um auch bei ungleichmäßiger Stromaufteilung durch entsprechenden Anschluß der Stromquelle an die Spule einen Kraftlinienfluß im normalen Betrieb zu vermeiden.It is advisable to arrange several tapping points on the coil, so as to avoid even when it is uneven Current distribution by appropriate connection of the power source to the coil creates a flux of lines of force in normal operation to avoid.
In weiterer Ausbildung des Erfindungsgegenstandes wird vorgeschlagen, bei Verwendung der Schutzdrosselspulen in Verbindung mit Transformatoren, welche ein Wechselstromnetz speisen, die Schutzdrosselspule im Gehäuse des Transformators anzuordnen, so daß sie mit dem Transformator eine konstruktive Einheit bildet.In a further development of the subject matter of the invention, it is proposed when using the protective reactors in connection with transformers, which an alternating current network feed, to arrange the protective inductor in the housing of the transformer, so that it has a constructive relationship with the transformer Unity forms.
Der Gegenstand der Erfindung ist in der Zeichnung in beispielsweisen Anordnungen dargestellt.The object of the invention is shown in the drawing in exemplary arrangements shown.
'Bei dem Beispiel nach Abb. 1 speist die Kraftquelle α über die Speisekabel b die bei-'den UnterstationenC1, Zwischen Kraftquelle« und den Speisekafaeln b liegt eine Drosselspule d. Die Kraftquelle ist an 'eine der Anzapfstellen e, und zwar im vorliegenden Falle an die mittlere Anzapfstelle, angeschlossen. Führen nun beide Speisekabel b einen gleich großen Strom, so ist die Drosselspule wirkungslos. Bei der normalen Netzspeisung fällt also der induktive Spannungsabfall in der Drosselspule fort. Dieser Vorteil ist besonders dann groß, wenn .die Belastung mit einem schlechten Leistungsfaktor erfolgt.In the example according to Fig. 1, the power source α feeds the two substations C 1 , between power source ”and the feed cables b, via the feed cable b , a choke coil d. The power source is connected to one of the tapping points e, in the present case to the middle tapping point. If both supply cables b carry the same current, the choke coil is ineffective. With normal mains supply, the inductive voltage drop in the choke coil is eliminated. This advantage is particularly great when the load is with a poor power factor.
Auch bei ungleichmäßiger Lastaufteilung in den beiden ■ Speisekabeln b lassen sich durch Wahl einer entsprechenden Anzapfunge für die Stromzuführung beide Spulenteile so abgleichen, daß die Amperewindungszahlen sich gegenseitig aufheben.Even with an uneven load distribution in the two supply cables b , by selecting an appropriate tap for the power supply, both coil parts can be adjusted so that the number of ampere turns cancel each other out.
Besteht nun in einer der Unterstationen c oder in einem der Speisekabel b ein Kurz-Schluß, so überwiegt die Amperewindungszahl in der zugehörigen Spulenhälfte, so daß die Drosselwirkung zur Geltung kommt. Besonders stark ist die Drosselwirkung, wenn über die nicht vom Kurzschluß betroffenen Unter-Stationen eine Rückspeisung der Kurzschlußstelle eintritt, so daß sich die Amperewindungen in beiden Spulenteilen addieren.It is now in one of the substations c or one of the feeder cable b, a short-circuit, the ampere predominates in the associated coil half so that the throttle effect comes into play. The choke effect is particularly strong if the short-circuit point is fed back via the sub-stations not affected by the short circuit, so that the ampere turns in both coil parts add up.
Abb. 2 zeigt die Drosselspulen g nach der Erfindung in Verbindung mit Transformatoren /, die ein vermaschtes Niederspannungsnetz h speisen. Die Drosselspuleng· sind mit den Transformatoren/ zusammen in ein gemeinsames GeMuse / eingebaut und bilden" so ■ mit den Transformatoren eine konstruktive Einheit.Fig. 2 shows the choke coils g according to the invention in connection with transformers / which feed a meshed low-voltage network h. The choke coils · are built into a common GeMuse / together with the transformers and thus form a structural unit with the transformers.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB147546D DE572189C (en) | Protective inductor to limit the short-circuit current in AC networks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB147546D DE572189C (en) | Protective inductor to limit the short-circuit current in AC networks |
Publications (1)
Publication Number | Publication Date |
---|---|
DE572189C true DE572189C (en) | 1933-03-11 |
Family
ID=7001506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB147546D Expired DE572189C (en) | Protective inductor to limit the short-circuit current in AC networks |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE572189C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2946050A1 (en) * | 1979-11-15 | 1981-05-21 | Germanischer Lloyd AG, 2000 Hamburg | Power supply system on board ship - has auxiliary generators connected by antiparallel choke coils to two distributors for main switching network |
-
0
- DE DEB147546D patent/DE572189C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2946050A1 (en) * | 1979-11-15 | 1981-05-21 | Germanischer Lloyd AG, 2000 Hamburg | Power supply system on board ship - has auxiliary generators connected by antiparallel choke coils to two distributors for main switching network |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1513827B2 (en) | Arrangement for influencing the power distribution in a high voltage direct current network | |
DE572189C (en) | Protective inductor to limit the short-circuit current in AC networks | |
DE633948C (en) | Autotransformer for fine control through a contact piece | |
DE691111C (en) | Regulating transformer or reactor | |
EP0082966B1 (en) | Line transformer for television receivers | |
DE642679C (en) | Multi-phase mains coupling transformer with adjustable voltage both in terms of size and phase position, the windings of which are tapped at one end of the winding for each phase | |
DE757178C (en) | Device for the continuous change of the welding current of welding transformers with the help of an adjustable choke coil | |
DE730390C (en) | Arrangement for parallel operation of fine-stage regulating transformers | |
DE671310C (en) | Magnetic voltage equalizer | |
DE956149C (en) | Device for the compensation of the harmonics of iron-saturated choke coils | |
DE572370C (en) | Arrangement for keeping the voltage constant for small consumers connected to electrical distribution networks | |
DE293761C (en) | ||
DE682379C (en) | Single-phase regulating transformer | |
DE671186C (en) | Arrangement for grid control of grid-controlled discharge vessels with direct frequency conversion | |
DE550997C (en) | Circuit for step transformers, especially electric locomotives | |
DE1035264B (en) | Single-phase transformer, especially for supplying rail motors | |
DE386389C (en) | Control transformer for regulating alternating voltages with windings connected to collector segments | |
DE617351C (en) | Arrangement on high-voltage long-distance lines, which consist of several interconnected lines (single or multi-phase lines) to increase operational safety and to create an operating reserve | |
DE733815C (en) | Arrangement for suppressing the harmonics with an ordinal number divisible by 3 in the flux of direct-current pre-magnetized three-phase choke coils or transformers | |
DE659093C (en) | Transformer for electric arc welding | |
DE546562C (en) | Line block circuit | |
AT88092B (en) | Control device for valve rectifiers. | |
DE1538176C (en) | Corrective transformer | |
DE502563C (en) | Device for canceling the disturbances caused by the currents of neighboring power lines on telephone lines | |
DE561741C (en) | Three-phase consumer network with neutral conductor |