DE671516C - Monitoring device for a unit consisting of two generators - Google Patents

Monitoring device for a unit consisting of two generators

Info

Publication number
DE671516C
DE671516C DES92880D DES0092880D DE671516C DE 671516 C DE671516 C DE 671516C DE S92880 D DES92880 D DE S92880D DE S0092880 D DES0092880 D DE S0092880D DE 671516 C DE671516 C DE 671516C
Authority
DE
Germany
Prior art keywords
generators
monitoring device
excitation
unit consisting
monitoring
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
Application number
DES92880D
Other languages
German (de)
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 Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
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
Priority to NL29483D priority Critical patent/NL29483C/xx
Application filed by Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Priority to DES92880D priority patent/DE671516C/en
Application granted granted Critical
Publication of DE671516C publication Critical patent/DE671516C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency 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
    • H02H7/06Emergency 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
    • H02H7/062Emergency 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

Überwachungseinrichtung für ein aus zwei Generatoren bestehendes. Aggregat Zusatz zum Patent 635 974 In dem Hauptpatent 635974 ist eine Schutzschaltung für durch :eine Gegenlaufturbine angetriebene Generatoren beschrieben. Die vorliegende Zusatzerfindung betrifft nun die Verwendung einer solchen Schutzschaltung zur Einstellung und Gberwachung der Erregung solcher Generatoren.Monitoring device for one consisting of two generators. Aggregate addendum to patent 635 974 In the main patent 635 974 there is a protective circuit for generators driven by a counter-rotating turbine. The present Additional invention now relates to the use of such a protective circuit for setting and monitoring the excitation of such generators.

Wenn zwei Generatoren durch eine Gegenlaufturbine angetrieben werden, sind ihre Wirkleistungen und Blindleistungen normalerweise gleich. Mit Rücksicht auf .unverrneidliche Verschiedenheiten der magnetischen Eigenschaften der beiden Generatoren muß die Erregung jedes Generators aber für sich eingestellt werden. Ungleichheiten in der Erregung :oder der Belastung der beiden Generatoren. führen zu Ausgleichströmen, ,die über die Verbindungsleitungen zwischen den Generatorklemmen verlaufen.If two generators are driven by a counter-rotating turbine, their active and reactive powers are usually the same. With consideration to inevitable differences in the magnetic properties of the two Generators, the excitation of each generator must be set individually. Inequalities in excitation: or the load on the two generators. to lead to equalizing currents, which are transmitted via the connecting cables between the generator terminals get lost.

Erfindungsgemäß werden bei einem Aggregat, welches aus zweielektrisch gekuppelten. Generatoren besteht, deren Wirkleistungen und Blindleistungen normalerweise gleich sind, zur Einstellung und Überwachung der Erregung dieser Generatoren Anzeigevorrichtungen vorgesehen, welche die Ausgleichströme zwischen den Generatoren überwachen. Mit Hilfe dieser Anordnung ist also eine ständige betriebliche Überwachung der Erregung der Generatoren möglich. Diese Überwachung ist wertvall, da die Ausgleichströme zwischen den Generatoren innerhalb bestimmter Grenzen bleiben müssen und ein größeres Anwachsen der Ausgleichströme eine Abstellung der Ursache, daß die Erregungen beider Generatoren nicht richtig aufeinander abgestimmt sind, erfordert.According to the invention, in an assembly which consists of two-electric coupled. Generators exist whose active and reactive powers are normally are the same, for setting and monitoring the excitation of these generators display devices provided, which monitor the equalizing currents between the generators. With The help of this arrangement is a constant operational monitoring of the excitation of the generators possible. This monitoring is worthwhile because of the equalizing currents between the generators must remain within certain limits and a larger one An increase in the equalizing currents eliminates the cause that the excitations of both Generators are not properly coordinated, requires.

In der Abbildung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Generatoren i und ä .eines Ljungströmaggregates arbeiten gemeinsam auf die Sammelschiene-n3. Die Erregerwicklungen 4 und 5 der Generatoren liegen in Reihe miteinander an den Klemmen der Erregermaschine 6. An den Verbindungspunkt der Erregerwicklungen ist ein veränderlicher Widerstand 7 gelegt, dessen anderer Endpunkt durch einen Umschalter 8 mit den Klemmen der Erregermaschine verbunden werden: kann. Zur Einstellung der Erregung wird auf diese Weise der veränderliche Widerstand der Erreger-Wicklung 4 oder 5 parallel geschaltet.In the figure, an embodiment of the invention is shown. The generators i and the like of a Ljungström unit work together on the busbar-n3. The excitation windings 4 and 5 of the generators are in series with each other on the Clamping the exciter 6. At the connection point of the exciter windings is a variable resistor 7 placed, the other end point by a switch 8 can be connected to the terminals of the exciter: can. To set the In this way, excitation becomes the variable resistance of the excitation winding 4 or 5 connected in parallel.

Um einen Anhalt für die Regulierung des Widerstandes 7 und Steuerung des Schalters 8 zu gewinnen, sind nach der Erfindung in die zu den Sammelschienen 3 führenden Zuleitungen der Generatoren über sekundär in Achterschaltung liegende Stromwandler 9 Amperemeter io geschaltet. Die Abgleichung des Widerstandes 7 ist dann die richtige, wenn keines der Amperemeter io einen Anschlag zeigt.To provide a guide for the regulation of the resistance 7 and control of the switch 8 to win are according to the invention in the to the busbars 3 leading supply lines of the generators via secondary in figure eight Current transformer 9 ammeter switched OK. The balance of resistor 7 is then the right one if none of the ammeters shows a stop.

Claims (1)

PATENTANSPRUCH: Überwachungseinrichtung für ein aus zwei Generatoren bestehendes Aggregat, -dessen Generatoren sich infolge ihrer Anordnung stets im gleichen Betriebszustand befinden und normalerweise gleiche Wirk-und Blindleistungen führen, unter Benutzung einer Stromwandlerdifferentialschältung nach Patent 635 974, dadurch gekennzeichnet, daß die Stärke des Ausgleichstromes zwischen beiden Generatoren durch Meß- und Anzeigegeräte (10) zwecks Einstellung und Überwachung der Erregung dieser Generatoren überwacht wird.PATENT CLAIM: Monitoring device for a unit consisting of two generators, the generators of which are always in the same operating state due to their arrangement and normally have the same active and reactive powers, using a current transformer differential circuit according to patent 635 974, characterized in that the strength of the equalizing current between two generators is monitored by measuring and display devices (10) for the purpose of setting and monitoring the excitation of these generators.
DES92880D 1929-07-19 1929-07-19 Monitoring device for a unit consisting of two generators Expired DE671516C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL29483D NL29483C (en) 1929-07-19
DES92880D DE671516C (en) 1929-07-19 1929-07-19 Monitoring device for a unit consisting of two generators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES92880D DE671516C (en) 1929-07-19 1929-07-19 Monitoring device for a unit consisting of two generators

Publications (1)

Publication Number Publication Date
DE671516C true DE671516C (en) 1939-02-08

Family

ID=7517534

Family Applications (1)

Application Number Title Priority Date Filing Date
DES92880D Expired DE671516C (en) 1929-07-19 1929-07-19 Monitoring device for a unit consisting of two generators

Country Status (2)

Country Link
DE (1) DE671516C (en)
NL (1) NL29483C (en)

Also Published As

Publication number Publication date
NL29483C (en)

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