DE1136413B - Arrangement to achieve perfect parallel operation of self-regulating synchronous generators - Google Patents

Arrangement to achieve perfect parallel operation of self-regulating synchronous generators

Info

Publication number
DE1136413B
DE1136413B DES72793A DES0072793A DE1136413B DE 1136413 B DE1136413 B DE 1136413B DE S72793 A DES72793 A DE S72793A DE S0072793 A DES0072793 A DE S0072793A DE 1136413 B DE1136413 B DE 1136413B
Authority
DE
Germany
Prior art keywords
generators
excitation
arrangement
voltage divider
parallel
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.)
Pending
Application number
DES72793A
Other languages
German (de)
Inventor
Dipl-Ing Dr Karlheinz Lutz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Priority to DES72793A priority Critical patent/DE1136413B/en
Priority to CH1469161A priority patent/CH389072A/en
Priority to FR884985A priority patent/FR1310427A/en
Priority to BE612783A priority patent/BE612783A/en
Priority to GB8090/62A priority patent/GB948552A/en
Publication of DE1136413B publication Critical patent/DE1136413B/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/40Synchronising a generator for connection to a network or to another generator
    • H02J3/42Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronisation is achieved
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46Controlling of the sharing of output between the generators, converters, or transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Eletrric Generators (AREA)

Description

Anordnung zur Erzielung eines einwandfreien Parallelbetriebes selbstregelnder Synchrongeneratoren Die Erfindung bezieht sich auf eine Anordnung zur Erzielung eines einwandfreien Parallelbetriebes selbstregelnder, ungleicher Synchrongeneratoren mit lastabhängiger Erregung. Es ist bekannt, bei Synchrongeneratoren in Stromtransformatorschaltung durch wechselstromseitige Parallelschaltung der Erregergeräte auch bei Generatoren mit verschiedenen Eigenschaften oder verschiedenen Kennlinieneinstellungen automatisch eine anteilmäßige Aufteilung der Blindlast und damit einen einwandfreien Parallelbetrieb zu erzielen. Es werden jedoch nicht alle Betriebszustände zufriedenstellend erfaßt. Man hat auch schon bei wechselstromseitiger Parallelschaltung der Erregung Zusatzgleichrichter an geeignete Anzapfungen der den Synchronmaschinen zugeordneten Stromwandler angeschlossen, um dadurch trotz unterschiedlicher Erregerspannungen einen Ausgleich zu bewirken. Da neben den Zusatzgleichrichtern noch entsprechende Wicklungen oder zumindest Anzapfungen an den Transformatoren erforderlich sind, ist der Aufwand dieser bekannten Anordnung groß.Arrangement to achieve perfect parallel operation of self-regulating Synchronous Generators The invention relates to an arrangement for achieving this perfect parallel operation of self-regulating, unequal synchronous generators with load-dependent excitation. It is known for synchronous generators in a current transformer circuit through parallel connection of the excitation devices on the alternating current side, even with generators with different properties or different characteristic settings automatically a proportional distribution of the reactive load and thus a perfect parallel operation to achieve. However, not all operating states are satisfactorily recorded. Additional rectifiers are also available when the excitation is connected in parallel on the AC side connected to suitable taps on the current transformers assigned to the synchronous machines, in order to achieve a compensation despite different excitation voltages. In addition to the additional rectifiers, there are also corresponding windings or at least taps are required on the transformers, is the expense of this known arrangement great.

Die Erfindung hat die Aufgabe, auf einfachere Weise einen einwandfreien Parallelbetrieb für Synchronmaschinen zu ermöglichen, deren elektrische Daten, insbesondere deren Erregerspannungen stark voneinander abweichen können. Erfindungsgemäß ist zur Erregerwicklung mindestens eines der Generatoren ein Parallelwiderstand als Spannungsteiler angeordnet und sind die Spannungsteilerausgänge bzw. bei den Generatoren ohne Spannungsteiler die Erregerwicklungen mit den Spannungsteilerausgängen der anderen Generatoren parallel geschaltet. Zweckmäßig sind die Spannungsteiler so ausgelegt, daß ihre Leistungen klein sind gegenüber der Erregerleistung des zugehörigen Generators.The invention has the task of providing a flawless one in a simpler manner To enable parallel operation for synchronous machines, their electrical data, in particular whose excitation voltages can differ greatly from one another. Is according to the invention for the excitation winding at least one of the generators a parallel resistor as Voltage dividers are arranged and are the voltage divider outputs or at the generators without a voltage divider, the excitation windings with the voltage divider outputs of the other generators connected in parallel. The voltage dividers are expediently like this designed so that their services are small compared to the excitation power of the associated Generator.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Sie zeigt drei parallel arbeitende Synchrongeneratoren in Stromtransformatorschaltung.An embodiment of the invention is shown in the drawing. It shows three synchronous generators working in parallel in a current transformer circuit.

Die Erregerwicklungen 1, 11, 111 der Generatoren 2, 22, 222 werden über die Gleichrichter 3, 33, 333 von den Stromtransformatoren 4, 44, 444 gespeist. Die Primärseite der Stromtransformatoren besteht aus den Wicklungen 5, 55, 555, die über Drosseln 6, 66, 666 an dem Netz 10 liegen und einen von der Belastung unabhängigen Stromanteil liefern, und den mit den Ständerwicklungen der Generatoren in Reihe geschalteten Wicklungen 7, 77, 777, die einen dem Belastungsstrom der Generatoren verhältnisgleichen Strom liefern.The excitation windings 1, 11, 111 of the generators 2, 22, 222 are fed by the current transformers 4, 44, 444 via the rectifiers 3, 33, 333. The primary side of the current transformers consists of the windings 5, 55, 555, which are connected to the network 10 via chokes 6, 66, 666 and supply a current component independent of the load, and the windings 7, 77 connected in series with the stator windings of the generators , 777, which supply a current that is proportional to the load current of the generators.

Die Sekundärwicklungen 8, 88, 888 der Stromtransformatoren speisen über die Gleichrichter die Erregerwicklungen 1, 11, 111 mit den genannten Stromkomponenten in Stromüberlagerung. Die Kondensatoren 9, 99, 999 dienen zur Einleitung der Erregung. Die drei Erregerwicklungen 1, 11, 111 sind durch Leitungen 12 und 13 parallel geschaltet.The secondary windings 8, 88, 888 of the current transformers feed the excitation windings 1, 11, 111 with the mentioned current components in superimposition via the rectifier. The capacitors 9, 99, 999 are used to initiate the excitation. The three excitation windings 1, 11, 111 are connected in parallel by lines 12 and 13.

Die drei Generatoren 2, 22, 222 können voneinander verschiedene Leistungen, Polzahlen, Erregerleistungen und Erregerspannungen haben. Um trotzdem einen einwandfreien Parallelbetrieb zu ermöglichen, sind zu den Erregerwicklungen 11 und 111 der Generatoren 22 und 222 Parallelwiderstände 14 und 15 als Spannungsteiler angeordnet. Während die Leitung 13 unmittelbar die Enden 1i,111,1111 der Erregerwicklungen 1, 11, 111 parallel schaltet, verbindet die Leitung 12 das andere Ende K1 der Erregerwicklung 1 mit den Anzapfungen L11 und L111 der Spannungsteiler 14 und 15. Dabei ist angenommen, daß der Generator 2 die kleinste Erregerspannung hat. Die Anzapfungen L11 und L111 an den Spannungsteilern 14 und 15 sind so gewählt, daß bei Nennlast zwischen K1 und Il die gleiche Spannung auftritt wie zwischen Lii und l11 und zwischen Liil und 1111. Die Parallelwiderstände haben gegenüber den Erregerleistungen der zugehörigen Generatoren eine kleine Leistung.The three generators 2, 22, 222 can have different powers, numbers of poles, excitation powers and excitation voltages. In order to nevertheless enable perfect parallel operation, parallel resistors 14 and 15 are arranged as voltage dividers for the excitation windings 11 and 111 of the generators 22 and 222. While the line 13 directly connects the ends 1i, 111, 111 of the excitation windings 1, 11, 111 in parallel, the line 12 connects the other end K1 of the excitation winding 1 to the taps L11 and L111 of the voltage dividers 14 and 15. It is assumed that the generator 2 has the lowest excitation voltage. The taps L11 and L111 on the voltage dividers 14 and 15 are chosen so that at nominal load between K1 and II the same voltage occurs as between Lii and I11 and between Liil and 1111. The parallel resistors have a low power compared to the excitation power of the associated generators.

Claims (3)

PATENTANSPRÜCHE: 1. Anordnung zur Erzielung eines einwandfreien Parallbetriebes selbstregelnder, ungleicher Synchrongeneratoren mit lastabhängiger Erregung, dadurch gekennzeichnet, daß zur Erregerwicklung mindestens eines der Generatoren ein Parallelwiderstand als Spannungsteiler angeordnet ist und die Spannungsteilerausgänge bzw. bei den Generatoren ohne Spannungsteiler die Erregerwicklungen mit den Spannungsteilerausgängen der anderen Generatoren parallel geschaltet sind. PATENT CLAIMS: 1. Arrangement to achieve perfect parallel operation self-regulating, unequal synchronous generators with load-dependent excitation, thereby characterized in that at least one of the generators has a parallel resistor for the excitation winding as Voltage divider is arranged and the voltage divider outputs or at the generators without a voltage divider, the excitation windings with the voltage divider outputs of the other generators are connected in parallel. 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Spannungsteiler so ausgelegt sind, daß ihre Leistungen klein gegenüber der Erregerleistung des zugehörigen Generators sind. 2. Arrangement according to claim 1, characterized characterized in that the voltage dividers are designed so that their performances are small compared to the excitation power of the associated generator. 3. Anordnung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Anzapfungen der Spannungsteiler so gewählt sind, daß im Alleinbetrieb bei Nennlast der Generatoren die am Spannungsteiler liegenden Ausgangsspannungen gleich groß sind.3. Arrangement according to Claim 1 and 2, characterized in that the taps of the voltage dividers are chosen so that in single operation at nominal load of the generators the voltage divider lying output voltages are the same.
DES72793A 1961-03-02 1961-03-02 Arrangement to achieve perfect parallel operation of self-regulating synchronous generators Pending DE1136413B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DES72793A DE1136413B (en) 1961-03-02 1961-03-02 Arrangement to achieve perfect parallel operation of self-regulating synchronous generators
CH1469161A CH389072A (en) 1961-03-02 1961-12-19 Arrangement to achieve perfect parallel operation of self-regulating synchronous generators
FR884985A FR1310427A (en) 1961-03-02 1962-01-16 Device for obtaining satisfactory parallel operation of self-regulating synchronous generators
BE612783A BE612783A (en) 1961-03-02 1962-01-18 Device for obtaining satisfactory parallel operation of self-regulating synchronous generators
GB8090/62A GB948552A (en) 1961-03-02 1962-03-01 A current supply installation comprising synchronous generators connected in parallel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES72793A DE1136413B (en) 1961-03-02 1961-03-02 Arrangement to achieve perfect parallel operation of self-regulating synchronous generators

Publications (1)

Publication Number Publication Date
DE1136413B true DE1136413B (en) 1962-09-13

Family

ID=7503483

Family Applications (1)

Application Number Title Priority Date Filing Date
DES72793A Pending DE1136413B (en) 1961-03-02 1961-03-02 Arrangement to achieve perfect parallel operation of self-regulating synchronous generators

Country Status (5)

Country Link
BE (1) BE612783A (en)
CH (1) CH389072A (en)
DE (1) DE1136413B (en)
FR (1) FR1310427A (en)
GB (1) GB948552A (en)

Also Published As

Publication number Publication date
CH389072A (en) 1965-03-15
FR1310427A (en) 1962-11-23
GB948552A (en) 1964-02-05
BE612783A (en) 1962-05-16

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