DE102008034619A1 - Electrical circuit operating method for generating electrical energy in e.g. wind power generation system, involves connecting intermediate circuit with short-circuit resistance and short-circuiting switch - Google Patents
Electrical circuit operating method for generating electrical energy in e.g. wind power generation system, involves connecting intermediate circuit with short-circuit resistance and short-circuiting switch Download PDFInfo
- Publication number
- DE102008034619A1 DE102008034619A1 DE102008034619A DE102008034619A DE102008034619A1 DE 102008034619 A1 DE102008034619 A1 DE 102008034619A1 DE 102008034619 A DE102008034619 A DE 102008034619A DE 102008034619 A DE102008034619 A DE 102008034619A DE 102008034619 A1 DE102008034619 A1 DE 102008034619A1
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- DE
- Germany
- Prior art keywords
- short
- circuit
- voltage
- resistance
- switch
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
- H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M5/4505—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only having a rectifier with controlled elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
- H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M5/451—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output voltage or frequency
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage
-
- 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
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/007—Control circuits for doubly fed generators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine elektrische Schaltung zur Erzeugung elektrischer Energie nach dem Oberbegriff des Anspruchs 1 und nach dem Oberbegriff des Anspruchs 6.The The invention relates to a method and an electrical circuit for generating electrical energy according to the preamble of the claim 1 and according to the preamble of claim 6.
Bei Windkraft- oder Wasserkraft- oder Gasturbinen-Energieerzeugungsanlagen ist es bekannt, einen sogenannten doppelt gespeisten Asynchrongenerator mit netzgekoppeltem Stator zu verwenden. Der Rotor der Asynchrongenerator ist in diesem Fall über einen rotorseitigen Umrichter, einen Zwischenkreis und einen netzseitigen Umrichter mit dem Netz verbunden. Der Zwischenkreis enthält einen oder mehrere Kondensatoren, und die beiden Umrichter werden unter anderem dahingehend gesteuert, dass die Zwischenkreisspannung einer vorgegebenen Nennspannung entspricht. Im Fehlerfall ist es möglich, dass die Zwischenkreisspannung stark ansteigt und unzulässige Werte erreicht.at Wind power or hydropower or gas turbine power plants it is known a so-called double-fed asynchronous generator with mains-coupled To use stator. The rotor of the asynchronous generator is in this Case over a rotor-side converter, an intermediate circuit and a network-side Inverter connected to the grid. The DC link contains one or more capacitors, and the two inverters are under Controlled to the effect that the DC link voltage of a corresponds to the specified nominal voltage. In case of error, it is possible that the DC link voltage rises sharply and impermissible values reached.
Aufgabe der Erfindung ist es, ein Verfahren und eine Schaltung zu schaffen, mit der ein Ansteigen der Zwischenkreisspannung in überwachter Weise vermieden wird.task The invention is to provide a method and a circuit with the increase in the intermediate circuit voltage in supervised Way is avoided.
Die Erfindung löst diese Aufgabe durch ein Verfahren nach dem Anspruch 1 und durch eine elektrische Schaltung nach dem Anspruch 6.The Invention solves this object by a method according to claim 1 and by an electrical circuit according to claim 6.
Erfindungsgemäß ist ein Asynchrongenerator vorgesehen, der statorseitig mit einem Energieversorgungsnetz gekoppelt ist, und der rotorseitig über einen rotorseitigen Umrichter, einen Zwischenkreis und einen netzseitigen Umrichter mit dem Energieversorgungsnetz gekoppelt ist. Der Zwischenkreis ist mit einem Kurzschlusswiderstand und einem Kurzschlussschalter verbunden. Erfindungsgemäß wird ermittelt, ob eine von dem Kurzschlusswiderstand abgeleitete Messspannung mit einer den Kurzschlussschalter ansteuernden Steuerspannung im wesentlichen übereinstimmt.According to the invention is a Asynchronous provided, the stator side with a power grid coupled, and the rotor side via a rotor-side inverter, a DC link and a network-side inverter to the power grid is coupled. The DC link is with a short-circuit resistance and a shorting switch connected. According to the invention, it is determined whether a derived from the short-circuit resistance measurement voltage with a control circuit voltage driving the short circuit switch substantially coincides.
Mit Hilfe des Kurzschlusswiderstands und des Kurzschlussschalters kann der Zwischenkreis bei einem unzulässigen Ansteigen der Zwischenkreisspannung kurzgeschlossen werden. Damit kann das Ansteigen der Zwischenkreisspannung begrenzt werden. Gleichzeitig wird durch die erfindungsgemäße Ermittlung gewährleistet, dass insbesondere der Kurzschlusswiderstand laufend auf seine korrekte Funktion überwacht wird. Dies erreicht die Erfindung dadurch, dass die vom Kurzschlusswiderstand abgeleitete Messspannung mit der Steuerspannung zur Ansteuerung des Kurzschlussschalters verglichen wird. Liegt hier insbesondere im Hinblick auf deren zeitlichen Verlauf im wesentlichen eine Übereinstimmung vor, so kann auf einen fehlerfreien Betrieb geschlossen werden. Ansonsten muss angenommen werden, dass ein Fehler vorliegt.With Help of short-circuit resistor and short-circuit switch can the DC link at an impermissible increase in the DC link voltage be shorted. This can increase the DC link voltage be limited. At the same time is determined by the invention determination guaranteed that in particular the short-circuit resistance constantly monitored for its correct function becomes. This is achieved by the invention in that the short-circuit resistance derived measuring voltage with the control voltage for control of the short-circuit switch is compared. Lies here in particular in terms of their timing essentially a match before, it can be concluded that a fault-free operation. Otherwise, it must be assumed that there is an error.
Weitere Merkmale, Anwendungsmöglichkeiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen der Erfindung, die in den Figuren der Zeichnung dargestellt sind. Dabei bilden alle beschriebenen oder dargestellten Merkmale für sich oder in beliebiger Kombination den Gegenstand der Erfindung, unabhängig von ihrer Zusammenfassung in den Patentansprüchen oder deren Rückbeziehung sowie unabhängig von ihrer Formulierung bzw. Darstellung in der Beschreibung bzw. in der Zeichnung.Further Features, applications and advantages of the invention will become apparent from the following description of exemplary embodiments of the invention, which are illustrated in the figures of the drawing. All described or illustrated features form for themselves or in any combination, the subject matter of the invention, regardless of their summary in the claims or their dependency as well as independently from their formulation or presentation in the description or in the drawing.
In
der
Eine
Steuerung
Der
Zwischenkreis
Bei
dem Kurzschlussschalter
Bei
der in der
Im
Normalbetrieb dieser Schaltung wird der Rotor
Die
Zwischenkreisspannung Ud wird mit Hilfe eines Spannungssensors
Die
Zwischenkreisspannung Ud kann aus verschiedenen Gründen ansteigen.
So kann dies auf einer Veränderung,
insbesondere einem Anstieg der Netzspannung des Energieversorgungsnetzes
Durch
das Kurzschließen
des Zwischenkreises
Dem
Kurzschlusswiderstand
Der
Zenerdiode
Einem
der beiden Widerstände
Der
lichtdetektierenden Diode
Es
versteht sich, dass die Überwachungseinrichtung
Wie
vorstehend anhand der
Solange
der Zwischenkreis nach Masse kurzgeschlossen ist, fließt ein Strom
unter anderem über
den Kurzschlusswiderstand
Ist
der Zwischenkreis nicht nach Masse kurzgeschlossen, so fließt kein
Strom über
den Kurzschlusswiderstand
In
der
Im
fehlerfreien Betrieb der Kurzschlusseinrichtung
Die vorstehend erläuterte Übereinstimmung bezieht sich dabei im wesentlichen nur auf den zeitlichen Verlauf der Steuerspannung Us und der Messspannung Um, also insbesondere auf deren Umschaltzeitpunkte zwischen den „0”- und „1”-Signalen. Die genannte Übereinstimmung bezieht sich jedoch nicht auf die Größe dieser „0”- und „1”-Signale, also deren Amplitudenwerte. Diese Größe kann bei der Steuerspannung Us und der Messspannung Um voneinander abweichen.The referred to above This is essentially only on the time course of the control voltage Us and the measuring voltage Um, ie in particular on their switching times between the "0" and "1" signals. The named match however, does not refer to the size of these "0" and "1" signals, that is, their amplitude values. This size can at the control voltage Us and the measuring voltage Um differ.
Aus
der vorstehend erläuterten Übereinstimmung
der Steuerspannung Us und der Messspannung Um kann von der Steuerung
Entsprechendes
gilt für
einen Zeitbereich Z2 der
Ist jedoch die Messspannung Um in einem Zeitpunkt oder einem Zeitbereich ein „1”-Signal, in dem die Steuerspannung Us kein „1”-Signal ist, so ist die erläuterte Übereinstimmung nicht vorhanden.is however, the measurement voltage Um at a time or a time range a "1" signal, where the control voltage Us is not a "1" signal, the explanation is the same unavailable.
Dies
kann der Fall sein, wenn die Steuerspannung von einem „1”-Signal
auf ein „0”-Signal
zurückgeschaltet
wird, die Messspannung Um aber trotzdem weiterhin ungleich Null
und damit auf einem „1”-Signal
bleibt. Dieser Fall ist in der
Ebenfalls
kann dies der Fall sein, wenn die Steuerspannung Us andauernd auf
einem „0”-Signal ist
und die Messspannung Um trotzdem ein „1”-Signal wird. Dieser Fall
liegt in der
Liegt
die erläuterte Übereinstimmung
in einem Zeitpunkt oder einem Zeitbereich nicht vor, wie dies beispielhaft
in den Zeitbereichen Z3, Z4 der Fall ist, so kann das Steuergerät
Insbesondere
kann dann auf einen fehlerhaften Betrieb des Kurzschlusswiderstands
Liegt
ein derartiger Fehler vor, kann das Steuergerät
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008034619A DE102008034619A1 (en) | 2008-07-25 | 2008-07-25 | Electrical circuit operating method for generating electrical energy in e.g. wind power generation system, involves connecting intermediate circuit with short-circuit resistance and short-circuiting switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008034619A DE102008034619A1 (en) | 2008-07-25 | 2008-07-25 | Electrical circuit operating method for generating electrical energy in e.g. wind power generation system, involves connecting intermediate circuit with short-circuit resistance and short-circuiting switch |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008034619A1 true DE102008034619A1 (en) | 2010-01-28 |
Family
ID=41428641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008034619A Ceased DE102008034619A1 (en) | 2008-07-25 | 2008-07-25 | Electrical circuit operating method for generating electrical energy in e.g. wind power generation system, involves connecting intermediate circuit with short-circuit resistance and short-circuiting switch |
Country Status (1)
Country | Link |
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DE (1) | DE102008034619A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013120212A1 (en) * | 2012-02-17 | 2013-08-22 | Woodward Ids Switzerland Ag | Protective device for a doubly fed three-phase generator and method for operating such a protective device |
CN110404168A (en) * | 2019-09-11 | 2019-11-05 | 中山大学 | A kind of adaptive electro photoluminescence training system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0450126B1 (en) * | 1990-04-06 | 1994-02-16 | Siemens Aktiengesellschaft | Protection and monitoring device for a pulse resistor of a voltage intermediate circuit converter |
DE102006053367A1 (en) * | 2006-11-10 | 2008-05-21 | Repower Systems Ag | Method and device for operating an inverter, in particular for wind energy installations |
-
2008
- 2008-07-25 DE DE102008034619A patent/DE102008034619A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0450126B1 (en) * | 1990-04-06 | 1994-02-16 | Siemens Aktiengesellschaft | Protection and monitoring device for a pulse resistor of a voltage intermediate circuit converter |
DE102006053367A1 (en) * | 2006-11-10 | 2008-05-21 | Repower Systems Ag | Method and device for operating an inverter, in particular for wind energy installations |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013120212A1 (en) * | 2012-02-17 | 2013-08-22 | Woodward Ids Switzerland Ag | Protective device for a doubly fed three-phase generator and method for operating such a protective device |
CN110404168A (en) * | 2019-09-11 | 2019-11-05 | 中山大学 | A kind of adaptive electro photoluminescence training system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |