DE515864C - Generator protection, especially for Ljungstroemaggregate - Google Patents
Generator protection, especially for LjungstroemaggregateInfo
- Publication number
- DE515864C DE515864C DES90833D DES0090833D DE515864C DE 515864 C DE515864 C DE 515864C DE S90833 D DES90833 D DE S90833D DE S0090833 D DES0090833 D DE S0090833D DE 515864 C DE515864 C DE 515864C
- Authority
- DE
- Germany
- Prior art keywords
- relay
- resistor
- frame
- interturn
- series
- 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
- H02H7/00—Emergency 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
- H02H7/06—Emergency 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 for dynamo-electric generators; for synchronous capacitors
- H02H7/062—Emergency 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 for dynamo-electric generators; for synchronous capacitors for parallel connected generators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Description
Die Erfindung" betrifft einen Generatorschutz für Maschinenaggregate, z. B. für Ljungströmaggregate, bei denen die Kraftmaschine zwei Generatoren antreibt, die infolge der mechanischen Anordnung stets synchron laufen und gemeinsam ein- und ausgeschaltet werden, wobei die Sternpunkte beider Generatorwicklungen über die Primärwicklung eines Transformators verbunden sind, deren Mittelpunkt mittelbar über einen Widerstand oder unmittelbar geerdet ist.The invention "relates to generator protection for machine units, e.g. for Ljungström units, in which the engine drives two generators which, due to the mechanical arrangement, always run synchronously and are switched on and off together, with the star points of both generator windings are connected via the primary winding of a transformer, the center of which is indirectly via a resistor or is directly earthed.
Erfindungsgemäß werden zur gemeinsamen Erfassung des Windungs- und Gestellschlusses sowohl das Gestellschluß- als auch das Windungsschlußrelais von der Sekundärseite des . Transformators aus gespeist. Zweckmäßig schaltet man das Gestellschlußrelais in Reihe mit den beiden Sekundärwicklungshälften, während das Windungsschlußrelais parallel zu einer Sekundärwicklungshälfte liegt, und erdet den Mittelpunkt der Primärwicklung des Transformators über einen Widerstand, wobei. die Anordnung so getroffen ist, daß beim Ansprechen beider Relais der Gestellschluß angezeigt wird, beim Ansprechen des Windüngsschlußrelais allein aber der Windungsschluß. Wenn man den Mittelpunkt der Primärwicklung des Transformators dagegen unmittelbar erdet, so teilt man erfindungsgemäß den im Sekundärkreis des Transformators liegenden Widerstand in zwei Hälften und speist das Gestellschlußrelais in Reihe mit beiden Widerstandshälften von den gegensinnig in Reihe geschalteten Sekundärwicklungshälften. Das Windungsschlußirelais dagegen speist man in Reihe mit je einer Widerstandshälfte von den beiden Sekundärwicklungshälften gemeinsam. Man kann das Gestellschlußrelais natürlich dabei auch als wattmetrisches Relais ausführen, dessen eine Stromspule man in bekannter Weise von der Stromwandlergruppe in der gemeinsamen Hauptleitung oder von den in Acht geschalteten Stromwandlergruppen in je einer Generatorzuleitung speisen, während man die andere Spule parallel zu einer der beiden Widerstandshälften legt.According to the invention, for the common detection of the winding and frame connections both the frame fault relay and the interturn fault relay from the secondary side of . Transformer powered off. It is advisable to switch the frame closing relay to Series with the two secondary winding halves, while the interturn fault relay in parallel to a secondary winding half, and grounds the center point of the primary winding of the transformer through a resistor, where. the arrangement made so is that when both relays respond, the frame closure is displayed when responding of the short-circuit relay but only the short-circuit. When you have the focus the primary winding of the transformer, on the other hand, is directly grounded, according to the invention the in the secondary circuit of the is divided Transformer lying resistor in two halves and feeds the frame closing relay in series with both resistor halves from the secondary winding halves connected in series in opposite directions. The interturn relay, on the other hand, is fed in series with each one resistor half of the two secondary winding halves together. One can the frame closing relay of course also run as a wattmetric relay, its a current coil one in a known manner from the current transformer group in the common Main line or from the current transformer groups connected in eight in one generator feed line each feed while the other coil is parallel to one of the two resistor halves lays.
Um ohne weiteres unterscheiden zu können, in welchem Generator der Gestellschluß liegt, kann man erfindungsgemäß durch das wattmetrische Gestellschlußrelais je nach seiner Ausschlagsrichtung zwei verschiedene Steuerkontakte steuern. Man kann zu diesem Zweck auch zwei wattmetrische Relais verwenden mit je einem Steuerkontakt, die so geschaltet sind, daß je nach der Lage des Gestellschlusses entweder das eine oder andere Relais anspricht.In order to be able to easily distinguish in which generator the frame closure is located, you can according to the invention by the wattmetric frame closure relay depending on its Control two different control contacts in the direction of deflection. One can do this for this purpose also use two wattmetric relays, each with a control contact that is switched in this way are that depending on the location of the frame closure either one or the other relay appeals to.
Die Zeichnung zeigt Ausführungsbeispiele der Erfindung.The drawing shows exemplary embodiments of the invention.
Gemäß Abb. 1 sind die Wicklungsstennp unkte der Generatoren 2 und 3 über dieAccording to Fig. 1, the winding parts are points of generators 2 and 3 via the
*i Von dem Patentsucher sind als die Erfinder angegeben worden:* i The following have been named as the inventors by the patent seeker:
Dipl.-Ing. Dr.-Ing. Robert Schimpf in Berlin-Schlachtensee und Dipl.-Ing. Hermann Neiigebauer in Berlin-Spandau,Dipl.-Ing. Dr.-Ing. Robert Schimpf in Berlin-Schlachtensee and Dipl.-Ing. Hermann Neiigebauer in Berlin-Spandau,
Primärwicklung des Transformators 4 miteinander verbunden, deren Mittelpunkt über den Widerstand 5 geerdet ist. Die beiden Sekundärwicklungshälften 41 und 42 speisen zusammen gemäß der Erfindung ein Gestellschlußrelais 6, während die Sekundärwicklungshälfte 42 allein das Windungsschlußrelais 7 speist.Primary winding of the transformer 4 connected to each other, the center of which via the Resistor 5 is grounded. The two secondary winding halves 41 and 42 feed together according to the invention a frame closing relay 6, while the secondary winding half 42 only feeds the short-circuit relay 7.
Gemäß Abb. 2 ist der. Mittelpunkt der Primärwicklung des Transformators 4 unmittelbar geerdet, und in den Sekundär Stromkreis sind die beiden Widerstandshälften 8 und 9 in Reihe mit dem Gestellschlußrelais 10 eingeschaltet. Das Windungsschlußrelais 11 wird in Reihe mit der Widerstandshälfte 8 von der Sekundärwicklungshälfte 42 und in Reihe mit der Widerstandshälfte 9 von der Sekundärwicklungshälfte 41 gespeist.According to Fig. 2 is the. The center of the primary winding of the transformer 4 is directly grounded, and the two resistor halves 8 and 9 are connected in series with the frame closing relay 10 in the secondary circuit. The winding fault relay 11 is fed in series with the resistor half 8 from the secondary winding half 42 and in series with the resistor half 9 from the secondary winding half 41.
Bei der Ausführung nach Abb. 3 wird als Gestellschlußrelais das wattmetrische Relais 17 verwendet, dessen Spannungsspule parallel zu der Widerstandshälfte 9 liegt, während die Stromspule von den in Acht geschalteten Stromwandlergruppen 13 und 14 gespeist wird. .In the embodiment according to Fig. 3, the wattmetric relay 17 is used as the frame closing relay, the voltage coil of which is parallel to the resistor half 9, while the current coil is fed by the current transformer groups 13 and 14 connected in eight. .
Gemäß Abb. 4 sind zwei wattmetrische Relais ι s und 16 angeordnet, deren Stromspulen in Reihe ebenfalls von den in Acht geschalteten Stromwandlergruppen 13 und 14 gespeist werden, während die Spannungsspulen so an die Widerstandshälfte 8 angeschlossen sind, daß je nach der Lage des Gestellschlusses entweder das eine oder das andere Relais 15 bzw. 16 anspricht.According to Fig. 4 there are two wattmetric relays ι s and 16 arranged, the current coils also fed in series by the current transformer groups 13 and 14 connected in eight while the voltage coils are connected to the resistor half 8, that depending on the location of the frame closure either one or the other relay 15 or 16 responds.
Wie die Schaltungen nach den Abb. 2 bis 4 ohne weiteres erkennen lassen, sprechen im Falle eines Gestellschlusses die Gestellschlußrelais, im Falle eines Windungsschlusses die Windungsschlußrelais an.Like the circuits according to Figs. 2 to 4 can be recognized without further ado, in the event of a frame closure, the frame closure relays speak, in the event of an interturn fault, the interturn fault relay on.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES90833D DE515864C (en) | 1929-03-29 | 1929-03-29 | Generator protection, especially for Ljungstroemaggregate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES90833D DE515864C (en) | 1929-03-29 | 1929-03-29 | Generator protection, especially for Ljungstroemaggregate |
Publications (1)
Publication Number | Publication Date |
---|---|
DE515864C true DE515864C (en) | 1931-01-21 |
Family
ID=7516108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES90833D Expired DE515864C (en) | 1929-03-29 | 1929-03-29 | Generator protection, especially for Ljungstroemaggregate |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE515864C (en) |
-
1929
- 1929-03-29 DE DES90833D patent/DE515864C/en not_active Expired
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