EP0823715B1 - Three-phase transformer - Google Patents
Three-phase transformer Download PDFInfo
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- EP0823715B1 EP0823715B1 EP97810496A EP97810496A EP0823715B1 EP 0823715 B1 EP0823715 B1 EP 0823715B1 EP 97810496 A EP97810496 A EP 97810496A EP 97810496 A EP97810496 A EP 97810496A EP 0823715 B1 EP0823715 B1 EP 0823715B1
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- Prior art keywords
- phase
- winding
- windings
- regulation
- transformer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/12—Two-phase, three-phase or polyphase transformers
Definitions
- the present invention relates to electrical energy conversion using three-phase transformers in electrical networks. It affects you Three-phase transformer, as described in the preamble of the first claim is.
- an additional voltage U z in a network branch can influence both the active power distribution and the reactive power distribution in the desired manner within the network.
- the additional voltage U z has a so-called longitudinal component which is in phase with the mains voltage and a transverse component which is 90 ° out of phase with the mains voltage.
- a change in the longitudinal component influences the reactive power distribution in the network and the variation of the transverse component controls the active power flow.
- An additional voltage U z acting according to the above principle is usually realized in three-phase networks by means of three-phase autotransformers, as described, for example, in "Electrical Machines” by Bödefeld / Sequence, Springer Verlag 1971, on pages 86ff.
- a normal star autotransformer with various voltage taps is used to control the series component, which is referred to below as the series regulating transformer.
- the transverse components are usually controlled using a triangular autotransformer, also known as a series transformer, a so-called transverse regulating transformer. Accordingly, for a combined series and transverse control in a network branch, a main transformer with a series control transformer and a series control transformer are connected in series.
- the main transformer is used to couple the high-voltage network and the undervoltage network, and the series-connected series and series regulating transformers allow control to be used with lower losses and thus more economically, in parallel. Disadvantages of the series connection described, however, are the high production costs for the additional regulating transformers and their extensive space requirement. In addition, series and transverse regulating transformers are also lossy and, in particular, have copper and iron loss.
- the invention has for its object a three-phase transformer of the beginning mentioned kind to develop in such a way that it is a simpler and cost-effective longitudinal and lateral control for a suitable load distribution in allows an electrical network, the for the longitudinal and lateral control required space is reduced, and compared to the prior art Reduction of the power loss should be achieved.
- the essence of the invention is that within a three-phase transformer housing both the required energy transfer between two galvanically separate networks is made as well as a desired longitudinal and Cross regulation for reactive and active power distribution in an energy network is made. For this purpose it becomes a primary or a secondary Phase voltage a gradually adjustable longitudinal voltage, and each a stepwise adjustable transverse voltage of the two neighboring phases added.
- the advantages of the invention can be seen, inter alia, in that the otherwise in order to regulate reactive and active power distribution separately in a row Main transformer switched series and cross-regulating transformers only can be reduced to a few additional windings in the main transformer. By this measure reduces both construction costs and operating costs. At this point, the savings in construction costs include the expensive ones Transformer cores, the winding copper and the necessary space for the additional ones Transformers. Operating cost savings are mainly due to the lower iron and copper losses.
- E denotes the iron core of a three-phase transformer of the core transformer type.
- This three-phase transformer has three primary windings U PW , V PW and W PW with the three phase voltages U p , V p and W p and furthermore the transformer has three secondary windings U SW , V SW and W SW with the three phase voltages U s , V s and W s on.
- a longitudinal control winding U L , V L and W L and two transverse control windings are also arranged on each iron core leg per phase U, V, W, namely U Q1 , U Q2 in phase U, V Q1 , V Q2 in phase V and W Q1 , W Q2 in phase W.
- series and transverse control transformers are used for the targeted reactive and active power distribution in an energy distribution network.
- this reactive and active power distribution is achieved by suitable electrical connections of the series control windings U L , V L and W L and the cross control windings, U Q1 , U Q2 , V Q1 , V Q2 , W Q1 , W Q2 with the primary and secondary windings U PW , V PW , W PW , U SW , V SW and W SW reached.
- the necessary control methods for reactive and active power distribution are sufficiently known in connection with the use of conventional series and transverse control transformers, so that these control methods are not explained in detail below.
- the invention relates primarily to an electrical circuit to which conventional control methods can be used.
- the secondary winding U SW of the phase U is connected via a step switch 1 to a longitudinal control winding U L which is in the same phase and consists of a number of partial windings.
- the two secondary windings V SW and W SW of the adjacent phases V and W are electrically connected to the series control windings V L and W L via the tap changer 1 in accordance with the installation in phase U.
- the installed tap changer 1 is thus equipped in all three phases U, V, W with corresponding tap contacts for controlling the respective partial windings of the series regulating windings UL, VL and WL, which permits a gradual variation of the corresponding phase voltages U s , V s and W s within limits .
- a regulated change in the position of the tap changer 1 occurs in an energy distribution network with several three-phase transformers operated in parallel to reduce the reactive current exchange and the associated losses used.
- the primary winding Upw of phase U is connected in series with the transverse control windings V Q1 and W Q2 .
- the voltages applied to the transverse control windings V Q1 and W Q2 are tapped via a step switch 2 on corresponding partial windings of the transverse control windings, the magnitudes of the voltages being the same, namely n * V p and n * W p , and variable in stages between n in pu.
- phase angles of the voltages present at V Q1 and W Q2 are both leading or lagging with respect to the phase voltage U p according to the circuit diagram and position of the tap changer 2. This is because, for example, the voltage at V Q1 is tapped in phase with the phase voltage V p for a selected tap changer position, while the added voltage at W Q2 is in phase opposition to the phase voltage W p .
- U p based on U p, only the combinations of 60 ° leading voltage at V Q1 with 120 ° leading voltage at W Q2 occur, or 60 ° following voltage at W Q2 with 120 ° leading voltage at V Q1 , and that the resulting voltage then results in U p + n * (V p -W p ).
- transverse voltage which is perpendicular to U p and which, according to a suitable regulation, is either 90 ° leading or 90 ° lagging due to the same amount and the choice of phase angle shown.
- This transverse voltage is added to the phase voltage U p , as a result of which the resulting voltage differs in magnitude and phase from U p .
- This phase shift leads to a preferred active power distribution and to reduced losses.
- V PW is connected to the transverse control windings W Q1 and U Q2
- W PW is connected to U Q1 and V Q2
- the resulting voltages result in V p + n * (W p -U p ) and W p + n * (U p -V p ).
- All voltage taps on the transverse regulating windings U Q1 , U Q2 , V Q1 , V Q2 , W Q1 , W Q2 are operated via the one tap changer 2 and are of the same magnitude, namely n * U p , n * V p and n * W p .
- the longitudinal control is carried out here on the primary side of the three-phase transformer and the transverse control on the secondary side.
- the primary winding U PW is connected via the step switch 1 to the series control winding U L and the secondary winding U SW via the step switch 2 to the transverse control windings V Q1 and W Q2 of the adjacent phases. Cyclic rotation results in the connections of the other two phases.
- the series control winding V L is connected to the primary winding V PW via the tap changer 1, the tap changer 2 connects the secondary winding V SW to the cross-regulation windings W Q1 and W Q2 .
- phase W the series control winding U L is connected to the primary winding W PW via the tap changer 1, and the secondary winding U SW is connected to the cross regulation windings U Q1 and U Q2 .
- the principle of operation of this alternative solution is the same as that of the first solution shown in FIG. 1.
- circuit arrangement according to the invention undoubtedly also in other types of transformers, such as a five-leg transformer or jacket transformer conceivable, but of course also others Winding arrangements such as the star-star circuits shown in the exemplary embodiments possible are.
- Winding arrangements such as the star-star circuits shown in the exemplary embodiments possible are.
- concentric arrangement of all individual windings their location is neither imperative nor is radial distribution prescribed on one leg of the iron frame.
Abstract
Description
Die vorliegende Erfindung bezieht sich auf die elektrische Energieumwandlung mittels Drehstromtransformatoren in elektrischen Netzwerken. Sie betrifft einen Drehstromransformator, wie er im Oberbegriff des ersten Anspruchs beschrieben ist.The present invention relates to electrical energy conversion using three-phase transformers in electrical networks. It affects you Three-phase transformer, as described in the preamble of the first claim is.
In vermaschten elektrischen Energieversorgungsnetzen oder Ringnetzen besteht vielfach die Aufgabe, die Stromverteilung im Netz zu ändern, um einen Zweig vor Überlastung zu schützen oder um einen möglichst guten Wirkungsgrad in der Gesamtstromverteilung, also kleinste Netzverluste, zu erreichen. Dies wird dadurch möglich, dass man in das Ringnetz eine Spannung einfügt, die Kreisströme bewirkt. Die Überlagerung der bisherigen Netzströmen mit diesen Kreisströmen ergibt eine geänderte Stromverteilung im Netz und damit auch in den im Netz installierten, parallel betriebenen Transformatoren.In meshed electrical power supply networks or ring networks often the task of changing the power distribution in the network to one branch To protect overload or to achieve the best possible efficiency in the Total current distribution, i.e. the smallest grid losses. This will do so possible to insert a voltage into the ring network, the circulating currents causes. The superimposition of the previous network currents with these circulating currents results in a changed power distribution in the network and thus also in the installed in the network transformers operated in parallel.
Das Hinzufügen einer Zusatzspannung Uz in einem Netzzweig kann innerhalb des Netzes sowohl die Wirkleistungsverteilung wie auch die Blindleistungsverteilung in gewünschter Weise beeinflussen. Hierfür weist die Zusatzspannung Uz eine sogenannte Längskomponente auf, welche mit der Netzspannung in Phase liegt, und eine Querkomponente, die gegen die Netzspannung 90° phasenverschoben ist. Eine Änderung der Längskomponente nimmt Einfluss auf die Blindleistungsverteilung im Netz und die Variation der Querkomponente steuert den Wirkleistungsfluss.The addition of an additional voltage U z in a network branch can influence both the active power distribution and the reactive power distribution in the desired manner within the network. For this purpose, the additional voltage U z has a so-called longitudinal component which is in phase with the mains voltage and a transverse component which is 90 ° out of phase with the mains voltage. A change in the longitudinal component influences the reactive power distribution in the network and the variation of the transverse component controls the active power flow.
Eine nach dem obigen Prinzip wirkende Zusatzspannung Uz wird üblicherweise in Drehstromnetzen mittels dreiphasiger Spartransformatoren realisiert, wie beispielsweise in "Elektrische Maschinen" von Bödefeld/Sequenz, Springer Verlag 1971, auf den Seiten 86ff beschrieben ist. Für eine Steuerung der Längskomponente kommt ein normaler Stern-Spartransformator mit verschiedenen Spannungsabgriffen zum Einsatz, welcher im folgenden Längsregeltransformator genannt wird. Die Steuerung der Querkomponete wird meistens mit einem ebenfalls als Serientransformator ausgebildeten Dreieck-Spartransformator, einem sogenannten Querregeltransformator, vorgenommen. Dementsprechend werden für eine kombinierte Längs- und Querregelung in einem Netzzweig ein Haupttransformator mit einem Längsregeltransformator und einem Querregeltransformator in Serie geschaltet. Der Haupttransformator dient der Kopplung des Oberspannungsnetzes und des Unterspannungsnetzes und die in Serie geschalteten Längs- und Querregeltransformatoren erlauben durch Regelung eine verlustärmere und damit wirtschaftlichere Ausnutzung von parallelgeschalteten Transformatoren. Nachteilig an der beschriebenen Serienschaltung sind allerdings die hohen Erstellungskosten für die zusätzlichen Regeltransformatoren und ihr umfangreicher Platzbedarf. Desweiteren sind Längs- und Querregeltransformatoren ebenfalls verlustbehaftet und weisen namentlich Kupfer- und Eisenverlust auf.An additional voltage U z acting according to the above principle is usually realized in three-phase networks by means of three-phase autotransformers, as described, for example, in "Electrical Machines" by Bödefeld / Sequence, Springer Verlag 1971, on pages 86ff. A normal star autotransformer with various voltage taps is used to control the series component, which is referred to below as the series regulating transformer. The transverse components are usually controlled using a triangular autotransformer, also known as a series transformer, a so-called transverse regulating transformer. Accordingly, for a combined series and transverse control in a network branch, a main transformer with a series control transformer and a series control transformer are connected in series. The main transformer is used to couple the high-voltage network and the undervoltage network, and the series-connected series and series regulating transformers allow control to be used with lower losses and thus more economically, in parallel. Disadvantages of the series connection described, however, are the high production costs for the additional regulating transformers and their extensive space requirement. In addition, series and transverse regulating transformers are also lossy and, in particular, have copper and iron loss.
Der Erfindung liegt die Aufgabe zugrunde, einen Drehstromtransformator der eingangs genannten Art dahingehend weiterzuentwickeln, dass er eine einfachere und kostengünstigere Längs- und Querregelung zur geeigneten Lastverteilung in einem elektrischen Netz ermöglicht, wobei der für die Längs- und Querregelung benötigte Platzbedarf reduziert, und im Vergleich zum Stand der Technik eine Reduktion der Netzverlustleistung erzielt werden soll. The invention has for its object a three-phase transformer of the beginning mentioned kind to develop in such a way that it is a simpler and cost-effective longitudinal and lateral control for a suitable load distribution in allows an electrical network, the for the longitudinal and lateral control required space is reduced, and compared to the prior art Reduction of the power loss should be achieved.
Erfindungsgemäss wird diese Aufgabe durch die Merkmale des ersten Anspruchs gelöst.According to the invention, this object is achieved by the features of the first claim solved.
Der Kern der Erfindung ist darin zu sehen, dass innerhalb eines Drehstromtransformatorgehäuses sowohl die geforderte Energieübertragung zwischen zwei galvanisch getrennten Netzen vorgenommen wird als auch eine gewünschte Längsund Querregelung zur Blind- und Wirkleistungsverteilung in einem Energienetz vorgenommen wird. Hierfür wird zu einer primärseitigen oder einer sekundärseitigen Phasenspannung eine stufenweise einstellbare Längsspannung, und jeweils eine stufenweise einstellbare Querspannung der beiden benachbarten Phasen addiert.The essence of the invention is that within a three-phase transformer housing both the required energy transfer between two galvanically separate networks is made as well as a desired longitudinal and Cross regulation for reactive and active power distribution in an energy network is made. For this purpose it becomes a primary or a secondary Phase voltage a gradually adjustable longitudinal voltage, and each a stepwise adjustable transverse voltage of the two neighboring phases added.
Die Vorteile der Erfindung sind unter anderem darin zu sehen, dass die sonst zwecks regelbarer Blind- und Wirkleistungsverteilung separat in Reihe zu einem Haupttransformator geschalteten Läng- und Querregeltransformatoren lediglich auf wenige Zusatzwicklungen im Haupttransformator reduziert werden. Durch diese Massnahme werden sowohl Baukosten wie auch Betriebskosten reduziert. An dieser Stelle umfassen die Ersparnisse bei den Baukosten die kostenintensiven Transformatorkerne, das Wicklungskupfer und die nötige Stellfläche der zusätzlichen Transformatoren. Betriebskostenersparnisse sind vor allem durch die geringeren Eisen- und Kupferverluste zu verzeichnen.The advantages of the invention can be seen, inter alia, in that the otherwise in order to regulate reactive and active power distribution separately in a row Main transformer switched series and cross-regulating transformers only can be reduced to a few additional windings in the main transformer. By this measure reduces both construction costs and operating costs. At this point, the savings in construction costs include the expensive ones Transformer cores, the winding copper and the necessary space for the additional ones Transformers. Operating cost savings are mainly due to the lower iron and copper losses.
Ausführungsbeispiele der Erfindung sowie die damit erzielbaren Vorteile werden nachfolgend anhand der Zeichnungen erläutert. Embodiments of the invention and the advantages that can be achieved thereby explained below with reference to the drawings.
In der Zeichnung sind Ausführungsbeispiele der Erfindung schematisch dargestellt, und zwar zeigen:
- Fig. 1
- einen Längsschnitt eines Drehstromtransformators mit Längs- und Querregelwicklungen;
- Fig. 2
- eine alternative Ausführungsform des Drehstromtransformators;
- Fig. 1
- a longitudinal section of a three-phase transformer with series and transverse control windings;
- Fig. 2
- an alternative embodiment of the three-phase transformer;
Es sind nur die für das Verständnis der Erfindung wesentlichen Elemente gezeigt.Only the elements essential for understanding the invention are shown.
In Fig. 1 ist mit E der Eisenkern eines Drehstromtransformators vom Kerntransformatortyp bezeichnet. Dieser Drehstromtransformator weist drei Primärwicklungen UPW, VPW und WPW mit den drei Phasenspannungen Up, Vp und Wp auf und weiterhin weist der Transformator drei Sekundärwicklungen USW, VSW und WSW mit den drei Phasenspannugen Us, Vs und Ws auf. Auf jedem Eisenkernschenkel sind pro Phase U, V, W des weiteren jeweils eine Längsregelwicklung UL, VL und WL und jeweils zwei Querregelwicklungen angeordnet, nämlich UQ1, UQ2 in der Phase U, VQ1, VQ2 in der Phase V und WQ1, WQ2 in der Phase W.In Fig. 1, E denotes the iron core of a three-phase transformer of the core transformer type. This three-phase transformer has three primary windings U PW , V PW and W PW with the three phase voltages U p , V p and W p and furthermore the transformer has three secondary windings U SW , V SW and W SW with the three phase voltages U s , V s and W s on. A longitudinal control winding U L , V L and W L and two transverse control windings are also arranged on each iron core leg per phase U, V, W, namely U Q1 , U Q2 in phase U, V Q1 , V Q2 in phase V and W Q1 , W Q2 in phase W.
Wie bereits erläutert wurde, dienen Längs- und Querregeltransformatoren der gezielten Blind- und Wirkleistungsverteilung in einem Energieverteilungsnetz. Erfindungsgemäss wird diese Blind- und Wirkleistungsverteilung durch geeignete elektrische Verbindungen der Längsregelwicklungen UL, VL und WL und der Querregelwicklungen, UQ1, UQ2, VQ1, VQ2, WQ1, WQ2 mit den Primär- und Sekundärwicklungen UPW, VPW, WPW, USW, VSW und WSW erreicht. Die nötigen Regelverfahren zur Blind- und Wirkleistungsverteilung sind hinlänglich in Verbindung mit der Verwendung herkömmlicher Längs- und Querregeltransformatoren bekannt, so dass diese Regelverfahren an sich im folgenden nicht näher erläutert werden. Die Erfindung betrifft vorrangig eine elektrische Schaltung, an welcher herkömmliche Regelverfahren zur Anwendung gelangen können.As already explained, series and transverse control transformers are used for the targeted reactive and active power distribution in an energy distribution network. According to the invention, this reactive and active power distribution is achieved by suitable electrical connections of the series control windings U L , V L and W L and the cross control windings, U Q1 , U Q2 , V Q1 , V Q2 , W Q1 , W Q2 with the primary and secondary windings U PW , V PW , W PW , U SW , V SW and W SW reached. The necessary control methods for reactive and active power distribution are sufficiently known in connection with the use of conventional series and transverse control transformers, so that these control methods are not explained in detail below. The invention relates primarily to an electrical circuit to which conventional control methods can be used.
Wie in Fig. 1 gezeigt wird, ist die Sekundärwicklung USW der Phase U über einen
Stufenschalter 1 mit einer in gleicher Phase liegenden, aus einer Anzahl Teilwicklungen
bestehenden, Längsregelwicklung UL verbunden. Die beiden Sekundärwicklungen
VSW und WSW der benachbarten Phasen V und W sind entsprechend
der Installation in Phase U mit den Längsregelwicklungen VL und WL elektrisch
über den Stufenschalter 1 verbunden. Der installierte Stufenschalter 1 ist somit in
allen drei Phasen U, V, W mit entsprechenden Stufenkontakten zur Ansteuerung
der jeweiligen Teilwicklungen der Längsregelwicklungen UL, VL und WL ausgerüstet,
die eine in Grenzen stufenweise Variation der entsprechenden Phasenspannungen
Us, Vs und Ws erlaubt. Hierbei werden alle Phasen gleichzeitig mit nur
einem Stufenschalter 1 um den gleichen Betrag m in p.u. mittels Regelung variiert.
Der zur Phasenspannung Us addierte Spannungsanteil der Längsregelwicklungen
UL mit der Grösse m*Us kann also je nach gewähltem Schaltstellung des
Stufenschalters 1 positiv oder negativ sein, so dass die resultierende Phasenspannung
vergrössert oder verkleinert wird. Mit der Regelkorrektur der Längsregelwicklungen
betragen die resultierenden Sekundärspannungen Us+m*Up,
Vs+m*Vp und Ws+m*Wp.As shown in FIG. 1, the secondary winding U SW of the phase U is connected via a
Eine geregelte Änderung der Stellung des Stufenschalters 1 wird in einem Energieverteilungsnetz
mit mehreren parallelbetriebenen Drehstromtransformatoren
zur Verminderung des Blindstromaustausches und der damit verbundenen Verluste
eingesetzt.A regulated change in the position of the
Die Primärwicklung Upw der Phase U ist in Hintereinanderschaltung mit den Querregelwicklungen
VQ1 und WQ2 verbunden. Auch hier werden die an den Querregelwicklungen
VQ1 und WQ2 anstehenden Spannungen über einen Stufenschalter
2 an entsprechenden Teilwicklungen der Querregelwicklungen abgegriffen, wobei
die Beträge der Spannugen gleich gross sind, nämlich n*Vp und n*Wp, und stufenweise
variierbar zwischen n in p.u.. The primary winding Upw of phase U is connected in series with the transverse control windings V Q1 and W Q2 . Here, too, the voltages applied to the transverse control windings V Q1 and W Q2 are tapped via a
Die Phasenwinkel der an VQ1 und WQ2 anstehenden Spannungen sind gemäss
Schaltschema und Stellung des Stufenschalters 2 beide voreilend oder beide
nacheilend bezüglich der Phasenspannung Up. Dies liegt daran, dass beispielsweise
die Spannung an VQ1 bei einer gewählten Stufenschalterstellung phasengleich
mit der Phasenspannug Vp abgegriffen wird, während die hinzuaddierte
Spannung an WQ2 zur Phasenspannung Wp in Phasenopposition steht. Es treten
also bezogen auf Up lediglich die Kombinationen 60°-voreilende Spannung an VQ1
mit 120°-voreilender Spannung an WQ2 auf, oder 60°-nacheilende Spannung an
WQ2 mit 120°-nacheilender Spannung an VQ1, und die resultierende Spannung
ergib sich dann zu Up+n*(Vp-Wp). Die Addition der Spannungen an den Querwicklungen
ergibt aufgrund Betragsgleichheit und der aufgezeigten Wahl der Phasenwinkel
immer eine zu Up senkrecht stehende, sogenannte Querspannung, die,
einer geeigneten Regelung folgend, entweder 90°-voreilend oder 90°-nacheilend
ist. Diese Querspannung wird der Phasenspannung Up hinzuaddiert, wodurch sich
die resultierende Spannung in Betrag und Phase von Up unterscheidet. Diese
erzielte Phasenverschiebung führt zu einer bevorzugten Wirkleistungsverteilung
und zu reduzierten Verlusten.The phase angles of the voltages present at V Q1 and W Q2 are both leading or lagging with respect to the phase voltage U p according to the circuit diagram and position of the
Entsprechend der Installation an der Primärwicklung UPW sind auch VPW und WPW
über den Stufenschalter 2 mit den entsprechenden Querregelwicklungen der benachbarten
Phasen verbunden. So ist VPW angeschlossen an den Querregelwicklungen
WQ1, und UQ2, und WPW ist verbunden mit UQ1 und VQ2, und die resulierenden
Spannungen ergeben sich zu Vp+n*(Wp-Up) und Wp+n*(Up-Vp).According to the installation at the primary winding PW U and V and W PW PW are connected via the
Alle Spannugsabgriffe an den Querregelwicklungen UQ1, UQ2, VQ1, VQ2, WQ1, WQ2
werden über den einen Stufenschalter 2 bedient und sie sind betragsmässig
gleich gross, nämlich n*Up, n*Vp und n*Wp.All voltage taps on the transverse regulating windings U Q1 , U Q2 , V Q1 , V Q2 , W Q1 , W Q2 are operated via the one
Die Fig. 2 zeigt eine alternative Ausführungsvariante der Erfindung. Die Längsregelung
wird hier an den Primärseite des Drehstromtransformators vorgenommen
und die Querregelung an der Sekundärseite. Dementsprechend ist die Primärwicklung
UPW über den Stufenschalter 1 mit der Längsregelwicklung UL verbunden
und die Sekundärwicklung USW über den Stufenschalter 2 mit den Querregelwicklungen
VQ1 und WQ2 der benachbarten Phasen. Durch zyklisches Drehen ergeben
sich die Verbindungen der beiden anderen Phasen. Die Längsregelwicklung VL ist
über den Stufenschalter 1 mit der Primärwicklung VPW verbunden, der Stufenschalter
2 verbindet die Sekundärwicklung VSW mit den Querregelwicklungen WQ1
und WQ2. In Phase W ist die Längsregelwicklung UL über den Stufenschalter 1 mit
der Prmärwicklung WPW, und die Sekundärwicklung USW mit den Querregelwicklungen
UQ1 und UQ2 verbunden.
Das Wirkprinzip dieser Alternativlösung ist gleich dem der in Fig. 1 dargestellten
ersten Lösung.2 shows an alternative embodiment variant of the invention. The longitudinal control is carried out here on the primary side of the three-phase transformer and the transverse control on the secondary side. Accordingly, the primary winding U PW is connected via the
The principle of operation of this alternative solution is the same as that of the first solution shown in FIG. 1.
Desweiteren ist die erfindungsgemässe Schaltungsanordnung zweifelsohne auch in anderen Transformatortypen, wie Fünfschenkeltransformator oder Manteltransformator denkbar, wobei selbstverständlich auch andere Wicklungsanordnungen wie die in den Ausführungsbeispielen gezeigten Stern-Stern-Schaltungen möglich sind. Dabei ist die konzentrische Anordnung aller Einzelwicklungen weder zwingend notwendig noch ist deren Lage radiale Verteilung auf einem Schenkel des Eisengestells vorgeschrieben.Furthermore, the circuit arrangement according to the invention undoubtedly also in other types of transformers, such as a five-leg transformer or jacket transformer conceivable, but of course also others Winding arrangements such as the star-star circuits shown in the exemplary embodiments possible are. Here is the concentric arrangement of all individual windings their location is neither imperative nor is radial distribution prescribed on one leg of the iron frame.
- U, V, WAND MANY MORE
- PhasenPhases
- Up, Vp, Wp U p , V p , W p
- primärseitige Phasespannungenprimary phase voltages
- Us, Vs, Ws U s , V s , W s
- sekundärseitige Phasespannungensecondary phase voltages
- UPW, VPW, WPW U PW , V PW , W PW
- PrimärwicklungenPrimary windings
- USW, VSW, WSW U SW , V SW , W SW
- SekundärwicklungenSecondary windings
- UL, VL, WL U L , V L , W L
- LängsregelwicklungenLongitudinal control windings
- UQ1, VQ1, WQ1 U Q1 , V Q1 , W Q1
- QuerregelwicklungenLateral control windings
- UQ2, VQ2, WQ2 U Q2 , V Q2 , W Q2
- QuerregelwicklungenLateral control windings
- EE
- EisenkernIron core
- 1, 21, 2
- StufenschalterTap changer
Claims (2)
- Three-phase transformer which has at least one primary winding (UPW, VPW, WPW) and at least one secondary winding (USW, VSW, WSW) per phase (U, V, W), which are installed on a limb of an iron core (E), with the three-phase transformer being intended for use in an electrical power transmission network with in-phase and quadrature regulation in order to achieve suitable wattless component and real power distribution, with at least one in-phase regulation winding (UL, VL, WL) and at least one quadrature regulation winding (UQ1, VQ1, WQ1, UQ2, VQ2, WQ2) in each phase (U, V, W) being operatively connected to the primary winding (UPW, VPW, WPW) and/or to the secondary winding (USW, VSW, WSW),
characterizedin that, for each phase (U, V, W), the at least one in-phase regulation winding (UL, VL, WL) is electrically connected to the secondary winding (USW, VSW, WSW) arranged on the same limb of the phase (U, V, W), and at least one of the quadrature regulation windings (UQ1, VQ1, WQ1, UQ2, VQ2, WQ2) of each of the two adjacent phases (U, V, W) is electrically connected to the primary winding (UPW, VPW, WPW),or in that, for each phase (U, V, W), the at least one in-phase regulation winding (UL, VL, WL) is electrically connected to the primary winding (UPW, VPW, WPW) arranged on the same limb of the phase (U, V, W), and at least one of the quadrature regulation windings (UQ1, VQ1, WQ1, UQ2, VQ2, WQ2) of the two adjacent phases (U, V, W) is in each case electrically connected to the secondary winding (USW, VSW, WSW). - Three-phase transformer according to Claim 1,
characterized
in that the in-phase regulation winding (UL, VL, WL) and the quadrature regulation windings (UQ1, VQ1, WQ1, UQ2, VQ2, WQ2) are composed of winding elements.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19632172 | 1996-08-09 | ||
| DE19632172A DE19632172A1 (en) | 1996-08-09 | 1996-08-09 | Three-phase transformer |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0823715A2 EP0823715A2 (en) | 1998-02-11 |
| EP0823715A3 EP0823715A3 (en) | 1998-04-29 |
| EP0823715B1 true EP0823715B1 (en) | 2001-01-17 |
Family
ID=7802227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97810496A Expired - Lifetime EP0823715B1 (en) | 1996-08-09 | 1997-07-16 | Three-phase transformer |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0823715B1 (en) |
| AT (1) | ATE198808T1 (en) |
| DE (2) | DE19632172A1 (en) |
| ES (1) | ES2154889T3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19933811A1 (en) * | 1999-07-20 | 2001-02-01 | Abb Research Ltd | Three-phase transformer for power distribution at medium-and high-voltages, with voltage control, uses controlled converter for regulating the secondary voltage via an input-side |
| NO330773B1 (en) * | 2009-12-18 | 2011-07-11 | Vetco Gray Scandinavia As | Transformer |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1763020B1 (en) * | 1968-03-23 | 1971-08-26 | Reinhausen Maschf Scheubeck | Switching arrangement for longitudinal and transverse voltage regulation of a three-phase step transformer |
| DE2034638A1 (en) * | 1970-07-13 | 1972-01-20 | Transformatorenwerk August Lep | Arrangement of a step regulating winding for 90 degree cross regulation with star and open circuit in three-phase transformers |
| DE2933685A1 (en) * | 1979-07-25 | 1981-02-12 | Bbc Brown Boveri & Cie | TRANSFORMER FOR CONTROLLED SHIFTING OF THE PHASE ANGLE OF THE OUTPUT VOLTAGES AGAINST THE PHASE ANGLE OF THE INPUT VOLTAGES |
| DE3047521C2 (en) * | 1980-12-17 | 1985-06-27 | Schorch GmbH, 4050 Mönchengladbach | Three-phase grid coupling transformer |
| DE3936937A1 (en) * | 1989-11-06 | 1991-05-08 | Siemens Ag | Winding set for moulded resin transformer - has main and auxiliary winding for each phase axially aligned along respective core limbs |
| ATE130699T1 (en) * | 1991-04-23 | 1995-12-15 | Siemens Ag | ADJUSTMENT DEVICE. |
| JP2536813B2 (en) * | 1993-10-22 | 1996-09-25 | 光也 松村 | Three-phase autotransformer |
| US5557249A (en) * | 1994-08-16 | 1996-09-17 | Reynal; Thomas J. | Load balancing transformer |
-
1996
- 1996-08-09 DE DE19632172A patent/DE19632172A1/en not_active Withdrawn
-
1997
- 1997-07-16 ES ES97810496T patent/ES2154889T3/en not_active Expired - Lifetime
- 1997-07-16 EP EP97810496A patent/EP0823715B1/en not_active Expired - Lifetime
- 1997-07-16 DE DE59702922T patent/DE59702922D1/en not_active Expired - Lifetime
- 1997-07-16 AT AT97810496T patent/ATE198808T1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE19632172A1 (en) | 1998-02-12 |
| ATE198808T1 (en) | 2001-02-15 |
| EP0823715A2 (en) | 1998-02-11 |
| ES2154889T3 (en) | 2001-04-16 |
| EP0823715A3 (en) | 1998-04-29 |
| DE59702922D1 (en) | 2001-02-22 |
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