DE2005189C3 - Three-phase step transformer - Google Patents
Three-phase step transformerInfo
- Publication number
- DE2005189C3 DE2005189C3 DE19702005189 DE2005189A DE2005189C3 DE 2005189 C3 DE2005189 C3 DE 2005189C3 DE 19702005189 DE19702005189 DE 19702005189 DE 2005189 A DE2005189 A DE 2005189A DE 2005189 C3 DE2005189 C3 DE 2005189C3
- Authority
- DE
- Germany
- Prior art keywords
- phase
- switches
- star
- switch
- transformer
- 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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
- Housings And Mounting Of Transformers (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Description
Die Erfindung bezieht sich auf einen dreiphasigen Stufentransformator gemäß dem Oberbegriff des Anspruchs 1. Ein derartiger Stufentransformator ist bereits bekannt (AT-PS 1 86 725, siehe unten).The invention relates to a three-phase step transformer according to the preamble of Claim 1. Such a step transformer is already known (AT-PS 1 86 725, see below).
Vorzugsweise bei Ofentransformatoren ist zur Erzielung eines größeren Einstellbereichs der Unterspannung neben einem oberspannungsseitig vorgesehenen Stufenschalter zur Änderung der Unterspannung eine Dreiecksternumschaltung der OS-WicklungenIn order to achieve a larger setting range, the undervoltage is preferable for furnace transformers next to a step switch provided on the high voltage side for changing the undervoltage a triangular star changeover of the HV windings
vorgesehen, wodurch man eine zusätzliche -facheprovided, which gives you an additional -fold
Spannungsabsenkung erreicht. Bei bisher üblichen Ausführungen (vgl. z. B. Siemens-Zeitschrift I960, Heft 2, Seite 96 bis 104, insb. Bild 7) müssen dabei jedoch drei mechanisch gekoppelte einphasige Stufenschalter vorgesehen werden, die aus Lastumschalter, Wender und Wähler bestehen, wobei die Umschaltung von Dreieckauf Sternschaltung in bekannter Weise mit dem Wender in spannungslosem Zustand ausgeführt wird. Abgesehen davon, daß hierbei drei getrennte Lastumschalter ϊ notwendig sind, erfodert die gleichzeitige Betätigung dieser drei Lastumschalter einen erheblichen Aufwand an mechanischen Kraftübertragungsmitteln.Voltage reduction achieved. In the case of the designs that have been customary up to now (see e.g. Siemens-Zeitschrift I960, issue 2, pages 96 to 104, especially Fig. 7), three must be Mechanically coupled single-phase step switches are provided, which consist of diverter switches, reversers and Voters exist, switching from delta to star connection in a known manner with the turner is carried out in a de-energized state. Apart from the fact that this is three separate diverter switches ϊ are necessary, simultaneous actuation is required these three diverter switches require a considerable amount of mechanical power transmission means.
Durch die obengenannte AT-PS 1 86 725 ist es bereits bekannt, bei Dreiphasentransformatoren mit einer inFrom the above-mentioned AT-PS 1 86 725 it is already known to use three-phase transformers with an in
ίο Dreieck geschalteten angezapften Wicklung, zwei der drei Stufenschalter schaltungs- und konstruktionsmäßig zu einer Einheit mit gemeinsamem Wurzelpunkt zusammenzufassen und in einem Eckpunkt des Dreiecks anzuordnen, so daß sie auf gleichem Potential liegen, während der dritte Stufenschalter in einem der beiden anderen Eckpunkte des Dreiecks angeordnet ist (Fig-1).ίο triangle connected tapped winding, two of the three step switches in terms of circuitry and construction to form a unit with a common root point to summarize and to arrange in a corner of the triangle so that they are at the same potential, while the third tap changer is arranged in one of the other two corner points of the triangle (Fig-1).
Aufgabe der Erfindung ist es, eine einfache Umschaltung der Transformatorwicklungen von Stufentransformatoren von Dreieck auf Stern zu ermöglichen, wobei neben einem geringeren Aufwand an Schaltern auch eine hohe Betriebssicherheit erreicht werden soll.The object of the invention is to provide a simple switchover of the transformer windings of step transformers To enable from triangle to star, in addition to a lower cost of switches a high level of operational reliability is to be achieved.
Diese Aufgabe wird bei einem Stufentransformator gemäß dem Oberbegriff des Anspruchs 1 durch dieThis object is achieved in a step transformer according to the preamble of claim 1 by the
_>5 kennzeichnenden Merkmale dieses Anspruchs gelöst._> 5 characterizing features of this claim solved.
Die Erfindung wird nachstehend anhand der F i g. 1 - 3 näher «irläutert.The invention is illustrated below with reference to FIGS. 1 - 3 in greater detail.
F i g. 1 zeigt die bereits bekannte Anordnung von in Dreieck geschalteten Wicklungen I1 2 und 3 einesF i g. Fig. 1 shows the already known arrangement of delta-connected windings I 1 2 and 3 one
ίο Transformators, wobei die Stufenschalter 4 und 5 zwei Eckpunkte der Dreieckschaltung bilden.ίο transformer, the step switches 4 and 5 two Form corner points of the delta connection.
Der Stufenschalter 4 ist dabei zweiphasig, der Stufenschalter 5 einphasig belastet. In F i g. 2 sind die Wicklungen des Transformators in Stern geschaltet.The step switch 4 is two-phase, the step switch 5 is loaded in one phase. In Fig. 2 are the The transformer windings are star-connected.
π Hierbei bildet der Lastumschalter 5 den Sternpunkt, während der Lastumschalter 4 am netzseitigen Ende der Wicklung 2 liegt. Der Lastumschalter 5 ist hierbei zweiphasig, der Lastumschalter 4 einphasig betrieben. Die Anordnung kann dabei so getroffen werden, daß man zwei dreiphasige Lastumschalter verwendet, wobei abwechselnd eine oder zwei Phasen der Lastumschalter belastet werden. Wie aus Fig.3 hervorgeht, kann die Schaltung jedoch auch mit zwei zweiphasigen Lastums-(;haltern ausgeführt werden. Die Umschaltung der dreiπ Here, the diverter switch 5 forms the star point, while the diverter switch 4 at the network-side end of the Winding 2 lies. The diverter switch 5 is two-phase, the diverter switch 4 is operated in one phase. The arrangement can be made so that two three-phase diverter switches are used, with alternately one or two phases of the diverter switch are loaded. As can be seen from Figure 3, the Circuit, however, synonymous with two two-phase Lastum - (; holders are executed. Switching the three
«ι·> Wicklungen 1,2 und 3 erfolgt durch das Umschalten der Wenderkontakte von 20 nach 30.«Ι ·> windings 1, 2 and 3 is done by switching the Reversing contacts from 20 to 30.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702005189 DE2005189C3 (en) | 1970-02-05 | 1970-02-05 | Three-phase step transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702005189 DE2005189C3 (en) | 1970-02-05 | 1970-02-05 | Three-phase step transformer |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2005189A1 DE2005189A1 (en) | 1971-08-12 |
DE2005189B2 DE2005189B2 (en) | 1978-11-23 |
DE2005189C3 true DE2005189C3 (en) | 1979-07-26 |
Family
ID=5761487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19702005189 Expired DE2005189C3 (en) | 1970-02-05 | 1970-02-05 | Three-phase step transformer |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2005189C3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101552114B (en) * | 2009-01-09 | 2010-12-22 | 沈阳全密封变压器股份有限公司 | Application method of tapping switch adopting M type in star/angle conversion coil |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3310741A1 (en) * | 1983-03-24 | 1984-09-27 | Transformatoren Union Ag, 7000 Stuttgart | LOAD SELECTOR FOR SWITCHING STEPWINDINGS OF A THREE-PHASE TRANSFORMER |
-
1970
- 1970-02-05 DE DE19702005189 patent/DE2005189C3/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101552114B (en) * | 2009-01-09 | 2010-12-22 | 沈阳全密封变压器股份有限公司 | Application method of tapping switch adopting M type in star/angle conversion coil |
Also Published As
Publication number | Publication date |
---|---|
DE2005189A1 (en) | 1971-08-12 |
DE2005189B2 (en) | 1978-11-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OF | Willingness to grant licences before publication of examined application | ||
C3 | Grant after two publication steps (3rd publication) | ||
8339 | Ceased/non-payment of the annual fee |