DE102017118194A1 - Hydropower plant for regulating the grid frequency and method of operation - Google Patents
Hydropower plant for regulating the grid frequency and method of operation Download PDFInfo
- Publication number
- DE102017118194A1 DE102017118194A1 DE102017118194.6A DE102017118194A DE102017118194A1 DE 102017118194 A1 DE102017118194 A1 DE 102017118194A1 DE 102017118194 A DE102017118194 A DE 102017118194A DE 102017118194 A1 DE102017118194 A1 DE 102017118194A1
- Authority
- DE
- Germany
- Prior art keywords
- turbine
- asynchronous machine
- frequency converter
- power
- pump
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
- F03B15/16—Regulating, i.e. acting automatically by power output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
- H02J3/241—The oscillation concerning frequency
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- 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
- Y02E10/20—Hydro energy
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
Wasserkraftanlage zur Regulierung der Frequenz eines Stromnetzes, umfassend ein Oberwasserbecken (1), ein Unterwasserbecken (2), einen Wasserweg (3), der das Oberwasserbecken (1) mit dem Unterwasserbecken (2) verbindet, eine Turbine (4), welche im Wasserweg (3) angeordnet ist und ein Laufrad, einen Leitapparat und eine Einrichtung zur Ausblasen des Laufradraumes umfasst, eine elektrische doppelt gespeiste Asynchronmaschine (5), welche mit der Turbine (4) mechanisch verbunden ist, einen Frequenzumrichter (6), welcher mit der Asynchronmaschine (5) elektrisch verbunden ist, einen Netz-Transformator (7) welcher mit der Asynchronmaschine (5), dem Frequenzumrichter (6) und dem Stromnetz elektrisch verbunden ist, einen Widerstand (8) welcher im Gleichstromzwischenkreis des Frequenzumrichters (6) so angeordnet ist, dass er die Stränge des Gleichstromzwischenkreises miteinander verbinden kann, und eine Einrichtung zur Kühlung des Widerstandes (8). Hydropower plant for regulating the frequency of a power network, comprising an upper water basin (1), an underwater basin (2), a waterway (3) connecting the upper water basin (1) with the underwater basin (2), a turbine (4), which is in the waterway (3) is arranged and comprises an impeller, a nozzle and a device for blowing out the impeller space, an electrical double-fed asynchronous machine (5), which is mechanically connected to the turbine (4), a frequency converter (6), which with the asynchronous machine (5) is electrically connected, a power transformer (7) which is electrically connected to the asynchronous machine (5), the frequency converter (6) and the power grid, a resistor (8) which is arranged in the DC intermediate circuit of the frequency converter (6) in that it can connect the strings of the DC intermediate circuit to each other, and means for cooling the resistor (8).
Description
Die vorliegende Erfindung betrifft eine Wasserkraftanlage, welche zur schnellen Regelung der Netzfrequenz geeignet ist, und ein Verfahren zum Betrieb einer solchen Wasserkraftanlage.The present invention relates to a hydropower plant, which is suitable for rapid control of the grid frequency, and a method for operating such a hydropower plant.
Klassische Wasserkraftanlagen können aufgrund der Trägheit der Wassersäule, sowie des maximalen und minimalen zulässigen Wasserdruckes in den Wasserwegen und in der Turbine, die elektrische Leistung nur verhältnismäßig langsam regeln - typischerweise auf einer Zeitskala von 10 - 30 Sekunden. Dies reicht nicht aus um bei den gestiegenen Anforderungen einen Beitrag zur kurzzeitigen Regelung der Netzfrequenz leisten zu können. So fordert beispielsweise der National Grid Code von Großbritannien, dass eine bestimmte elektrische Leistung in Abhängigkeit von der Netzfrequenz in weniger als einer Sekunde ins Netz einzuprägen bzw. zu absorbieren ist, um an der entsprechenden Vergütung zu partizipieren. Es ist Aufgabe der vorliegenden Erfindung eine Wasserkraftanlage anzugeben, die Regelleistung auf einer Zeitskala von unter einer Sekunde bereitstellen kann. Ferner ist es Aufgabe der vorliegenden Erfindung, ein Verfahren zum Betrieb einer solchen Wasserkraftanlage anzugeben.Classical hydropower plants can only regulate electrical power relatively slowly due to the inertia of the water column, as well as the maximum and minimum allowable water pressure in the waterways and in the turbine - typically on a time scale of 10 - 30 seconds. This is not sufficient to be able to make a contribution to the short-term control of the grid frequency in the increased requirements. For example, the UK's National Grid Code requires that a given electrical power be injected or absorbed into the grid in less than a second, depending on the grid frequency, in order to participate in the corresponding remuneration. It is an object of the present invention to provide a hydropower plant which can provide control power on a time scale of less than one second. It is another object of the present invention to provide a method for operating such a hydropower plant.
Die Erfinder haben erkannt, dass die gestellte Aufgabe durch eine Wasserkraftanlage mit den Merkmalen des Anspruchs 1 gelöst werden kann. Vorteilhafte Ausführungsformen ergeben sich aus den von Anspruch 1 abhängigen Unteransprüchen. Das erfindungsgemäße Verfahren zum Betrieb einer solchen Wasserkraftanlage ergibt sich aus dem unabhängigen Verfahrensanspruch. Vorteilhafte Ausführungsformen ergeben sich aus abhängigen Verfahrensansprüchen.The inventors have recognized that the stated object can be achieved by a hydroelectric power plant with the features of
Die erfindungsgemäße Lösung wird nachfolgend anhand von Figuren erläutert. Darin ist im Einzelnen folgendes dargestellt:
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1 Erfindungsgemäße Wasserkraftanlage; -
2 Ablaufdiagramm zum Betrieb einer erfindungsgemäßen Wasserkraftanlage.
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1 Hydroelectric power plant according to the invention; -
2 Flowchart for the operation of a hydropower plant according to the invention.
Im Gleichstromzwischenkreis des Frequenzumrichters
Leistungsabgabe an das Netz: Im mit
Leistungsaufnahme vom Netz: Im mit
Nach Abarbeitung der im Schritt
Die konkrete Auslegung einer erfindungsgemäßen Wasserkraftanlage hat ergeben, dass es vorteilhaft ist, wenn im Schritt
Damit die vom Grid Code geforderte Regelleistung durch die Wasserkraftanlage optimal zur Verfügung gestellt werden kann, muss die Anlage so ausgelegt sein, dass die Kapazität zur Leistungsabgabe an das Netz der Kapazität der Leistungsaufnahme aus dem Netz entspricht. Diese Anforderung muss sowohl im Kurzzeitbereich als auch im Langzeitbereich erfüllt sein. Die erfindungsgemäße Wasserkraftanlage ist durch ihren Aufbau so flexibel, dass diese Anforderung durch eine entsprechende Auslegung der Komponenten erfüllt werden kann.In order to be able to optimally provide the control power demanded by the grid code, the plant must be designed such that the capacity for power delivery to the grid corresponds to the capacity of the grid's power consumption. This requirement must be fulfilled both in the short-term and in the long-term range. The hydroelectric power plant according to the invention is so flexible by its structure that this requirement can be met by a corresponding design of the components.
Claims (12)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017118194.6A DE102017118194A1 (en) | 2017-08-10 | 2017-08-10 | Hydropower plant for regulating the grid frequency and method of operation |
US16/604,896 US20200158076A1 (en) | 2017-04-13 | 2018-03-29 | Hydropower plant for controlling grid frequency and method of operating same |
PCT/EP2018/058121 WO2018188965A1 (en) | 2017-04-13 | 2018-03-29 | Hydroelectric power plant for regulating network frequency and method for operation thereof |
CN201880031644.3A CN110621872B (en) | 2017-04-13 | 2018-03-29 | Hydroelectric power plant and method for operating a hydroelectric power plant |
EP18715013.1A EP3610151B1 (en) | 2017-04-13 | 2018-03-29 | Method of operation of a hydroelectric power plant for regulating network frequency |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017118194.6A DE102017118194A1 (en) | 2017-08-10 | 2017-08-10 | Hydropower plant for regulating the grid frequency and method of operation |
Publications (1)
Publication Number | Publication Date |
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DE102017118194A1 true DE102017118194A1 (en) | 2019-02-14 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102017118194.6A Ceased DE102017118194A1 (en) | 2017-04-13 | 2017-08-10 | Hydropower plant for regulating the grid frequency and method of operation |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD36606A (en) * | ||||
DE3040468A1 (en) * | 1979-10-29 | 1981-05-07 | Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa | MULTI-STAGE HYDROPOWER |
EP1651865B1 (en) * | 2003-08-07 | 2006-11-29 | Vestas Wind Systems A/S | Method of controlling a wind turbine connected to an electric utility grid during malfunction in said electric utility grid, control system, wind turbine and family hereof |
CH701753A1 (en) * | 2009-09-03 | 2011-03-15 | Ids Holding Ag | Speed variable generator system for use in e.g. hydro power plant, has voltage limiter attached at secondary side of generator such that secondary sided current is derived during high current through frequency converter |
DE202012101708U1 (en) * | 2012-05-10 | 2012-06-13 | Gerald Hehenberger | Differential gearbox for power generation plant |
WO2014195138A1 (en) * | 2013-06-05 | 2014-12-11 | Voith Patent Gmbh | Speed-variable pumped storage power system and method of operating same |
-
2017
- 2017-08-10 DE DE102017118194.6A patent/DE102017118194A1/en not_active Ceased
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD36606A (en) * | ||||
DE3040468A1 (en) * | 1979-10-29 | 1981-05-07 | Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa | MULTI-STAGE HYDROPOWER |
EP1651865B1 (en) * | 2003-08-07 | 2006-11-29 | Vestas Wind Systems A/S | Method of controlling a wind turbine connected to an electric utility grid during malfunction in said electric utility grid, control system, wind turbine and family hereof |
CH701753A1 (en) * | 2009-09-03 | 2011-03-15 | Ids Holding Ag | Speed variable generator system for use in e.g. hydro power plant, has voltage limiter attached at secondary side of generator such that secondary sided current is derived during high current through frequency converter |
DE202012101708U1 (en) * | 2012-05-10 | 2012-06-13 | Gerald Hehenberger | Differential gearbox for power generation plant |
WO2014195138A1 (en) * | 2013-06-05 | 2014-12-11 | Voith Patent Gmbh | Speed-variable pumped storage power system and method of operating same |
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