CH395898A - Method for commissioning a hydroelectric machine set - Google Patents
Method for commissioning a hydroelectric machine setInfo
- Publication number
- CH395898A CH395898A CH1032162A CH1032162A CH395898A CH 395898 A CH395898 A CH 395898A CH 1032162 A CH1032162 A CH 1032162A CH 1032162 A CH1032162 A CH 1032162A CH 395898 A CH395898 A CH 395898A
- Authority
- CH
- Switzerland
- Prior art keywords
- hydraulic machine
- opening
- diffuser
- closing element
- main closing
- Prior art date
Links
Classifications
-
- 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
- F03B15/005—Starting, also of pump-turbines
-
- 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
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
- F03B3/183—Adjustable vanes, e.g. wicket gates
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
- Control Of Water Turbines (AREA)
Description
Verfahren zum Inbetriebsetzen eines hydroelektrischen Maschinensatzes Die Erfindung betrifft ein Verfahren zum Inbe- triebsetzen eines hydroelektrischen Maschinensatzes, insbesondere mit einer zwei- oder mehrstufigen hy draulischen Maschine, bei Betrieb der hydraulischen Maschine als Turbine,
wobei die hydraulische Ma schine einen Leitapparat mit verstellbaren Leitschau- feln und ein Hauptabschlussorgan für das Betriebs wasser aufweit.
In Wasserturbinenanlagen werden. in zunehmen dem Masse hydraulische Maschinen mit Francislauf- rädern und entsprechenden Leitapparaten auch für grosse Fallhöhen verwendet, sei es als Turbinen, sei es als Pumpen, sei es als wahlweise als Turbine oder Pumpe betriebene Maschinen (Pumpturbinen).
Bei grossen Fallhöhen spielt die Frage der Ero sion, Korrosion und Kavitation eine wichtige Rolle bei der Konstruktion der Laufräder, aber auch der Leitschaufeln. Auch müssen die Drehzapfen und die Schaufelprofile bei zunehmender Fallhöhe immer stärker bemessen werden, was zu hydraulisch un günstigen Schaufelprofilen führt.
Um diese Schwierigkeiten zu umgehen, wurde die hydraulische Maschine bei grossen Fallhöhen mehrstufig ausgebildet, d. h. die Fallhöhen auf zwei oder mehr Stufen unterteilt. Dabei lässt sich aber nicht vermeiden, dass sich bei kleiner Leitapparatöffnung, insbesondere aber in der Geschlossenstellung der Leitschaufeln, die Fallhöhe ungleichmässig auf die einzelnen Stufen verteilt, so dass beispielsweise der oberste Leitapparat die ganze Fallhöhe zu über nehmen hat.
Bei verstellbaren Leitschaufeln von Pumpentur binen treten überdies bei kleiner Leitapparatöffnung im Pumpenbetrieb unzulässig starke Vibrationen auf.
Die Erfindung bezweckt, die geschilderten Nach teile zu vermeiden. Bei einem Verfahren zur Inbe- triebsetzung eines hydroelektrischen Maschinensatzes der eingangs beschriebenen Art wird zu diesem Zweck erfindungsgemäss der Leitapparat bei allen Betriebszuständen der hydraulischen Maschine min destens auf 4 % der Vollastöffnung offengehalten, und es wird zum Anfahren zuerst das Hauptab- schlussorgan bei kleinster Leitapparatöffnung ganz geöffnet,
und danach wird die Turbine durch Ver stellen der Leitschaufeln auf die für das Parallel schalten Tier elektrischen Maschine mit dem Netz er forderliche Drehzahl eingeregelt.
Vorteilhafterweise wird dabei das Hauptabschluss- organ im Bereich der der kleinsten Leitapparatöff- nung entsprechenden Öffnung langsam und ausser halb dieses Bereichs schneller geöffnet.
Auf diese Weise wird die Fallhöhe, der genügend grossen Leitapparatöffnung entsprechend, praktisch gleichmässig auf die Leitapparate von zwei oder mehr Stufen verteilt, und trotzdem überdeckt die Leitapparatregulierung den ganzen zu regelnden Be reich des Maschinensatzes. Nur ein Teil des unter halb der Leerlaufdrehzahl liegenden Anfahrbereichs, d. h. ein kleiner, keine eigentliche Regelung erfor dernder Bereich muss mittels des Hauptabschluss- organs gesteuert werden.
Method for starting up a hydroelectric machine set The invention relates to a method for starting up a hydroelectric machine set, in particular with a two-stage or multi-stage hydraulic machine, when the hydraulic machine is operated as a turbine,
whereby the hydraulic machine expands a guide device with adjustable guide vanes and a main closing element for the service water.
In water turbine systems are. Increasingly, hydraulic machines with Francis impellers and corresponding guide devices are also used for great heads, be it as turbines, be it as pumps, or be it as machines operated either as turbines or pumps (pump turbines).
With large heads, the issue of erosion, corrosion and cavitation plays an important role in the design of the impellers, but also of the guide vanes. The pivot pin and the blade profiles must also be dimensioned more and more with increasing head, which leads to hydraulically un favorable blade profiles.
In order to circumvent these difficulties, the hydraulic machine was designed in several stages for large heads, i.e. H. the heights of fall are divided into two or more levels. In this case, however, it cannot be avoided that when the diffuser opening is small, especially when the guide vanes are in the closed position, the height of fall is unevenly distributed over the individual stages, so that, for example, the top diffuser has to take over the entire height of fall.
In the case of adjustable guide vanes of pump turbines, unacceptably strong vibrations also occur when the guide apparatus opening is small.
The invention aims to avoid the described after parts. In a method for starting up a hydroelectric machine set of the type described at the outset, according to the invention the diffuser is kept open to at least 4% of the full load opening for this purpose in all operating states of the hydraulic machine, and the main closing element is first fully opened when the diffuser is opened open,
and then the turbine is regulated by adjusting the guide vanes to the speed required for the parallel animal electrical machine with the network.
The main closing element is advantageously opened slowly in the area of the opening corresponding to the smallest diffuser opening and faster outside this area.
In this way, the height of fall, corresponding to the sufficiently large diffuser opening, is practically evenly distributed over the diffuser of two or more levels, and nevertheless the diffuser regulation covers the entire area of the machine set to be regulated. Only part of the start-up range below idle speed, i.e. H. a small area that does not actually require any regulation must be controlled by the main closing body.
Claims (1)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1032162A CH395898A (en) | 1962-08-30 | 1962-08-30 | Method for commissioning a hydroelectric machine set |
DEE24000A DE1300479B (en) | 1962-08-30 | 1962-12-12 | Adjustable diffuser for water turbines coupled with electrical machines |
AT665163A AT243203B (en) | 1962-08-30 | 1963-08-20 | Method for commissioning a hydroelectric machine set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1032162A CH395898A (en) | 1962-08-30 | 1962-08-30 | Method for commissioning a hydroelectric machine set |
Publications (1)
Publication Number | Publication Date |
---|---|
CH395898A true CH395898A (en) | 1965-07-15 |
Family
ID=4361940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1032162A CH395898A (en) | 1962-08-30 | 1962-08-30 | Method for commissioning a hydroelectric machine set |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT243203B (en) |
CH (1) | CH395898A (en) |
DE (1) | DE1300479B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2439316A1 (en) * | 1978-10-20 | 1980-05-16 | Neyrpic | IMPROVEMENT AT STARTING OF PUMPS OR TURBINE PUMPS |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2365210A1 (en) * | 2010-03-09 | 2011-09-14 | Textilma AG | Water turbine control device and electricity generator |
-
1962
- 1962-08-30 CH CH1032162A patent/CH395898A/en unknown
- 1962-12-12 DE DEE24000A patent/DE1300479B/en active Pending
-
1963
- 1963-08-20 AT AT665163A patent/AT243203B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2439316A1 (en) * | 1978-10-20 | 1980-05-16 | Neyrpic | IMPROVEMENT AT STARTING OF PUMPS OR TURBINE PUMPS |
Also Published As
Publication number | Publication date |
---|---|
AT243203B (en) | 1965-10-25 |
DE1300479B (en) | 1969-07-31 |
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