Title of Invention

"THE METHOD AND SYSTEM FOR REGULATING THE LEVEL OF DAM INSTALLATION"

Abstract The levels (P) of dams (1) are. as a rale, regulated by opening or closing weir systems. Dams (1) of this type can also be used for generating electric energy by integrating a multitude of turbine generator units (2) or turbine generator modules (2). According to the invention, the flow through these turbine generator units or turbine generator modules (3) is used to regulate the level (P) by specifically switching on and switching off a single or a number of turbine generator units (2) or turbine generator modules (3).
Full Text The invention relates to a method for regulating the level of a dam installation, preferably a dam or a weir, a number of turbine generator units, preferably with outputs between 100 kW and 1000 kW each, being arranged in the dam installation to generate electrical power, at least some units being arranged above one another and/or beside one another and being connected to one another to form one or more turbine generator modules, and also a plant for regulating the level of a dam installation having a plurality of turbine generator units which are arranged above one another and/or beside one another and are connected to one another to form one or more turbine generator modules and, if appropriate, a predetermined number of turbine generator modules are arranged beside one another and supported on the dam installation.
Equipment for generating electrical power, in which a number of relatively small turbine generator units are -arranged in rows and columns beside one another and above one another in a frame or a stiffened construction are disclosed, for example, by W098/11343 or US 4.804,855.Because of their particularly short design ana large inflow area, such equipment is preferably used on dam installations such as sluices, weirs, dams or the like, in order to use the quantity of water flowing through and normally unused in order to produce electrical power. In such dam installations, however, the water level must be regulated in order to fulfill the function of the dam installation, required depending on the application. For example, ship traffic on a river requires a specific water level, or an irrigation dam must have a minimum water level in order to be able to ensure the irrigation. For this purpose, weir systems have hitherto been wholly or partially opened.
In conventional water po|ver plants turbines are generally provided with means (e.g. a wicket gate) for adjusting the flow rate through the turbine. The reason for this is of course that is desired to operate the turbine with the highest efficiency possible. But the efficiency is dependent from the available head (i.e. the water level). The flow rate through the turbine is therefore adjustable in order to ensure best efficiency for every possible water level. In other words, it is generally the main objective to operate the turbine so that maximum power is generated and not that a certain water level is maintained or reached. The flow through the dam installation of a conventional water power plant is adjusted by a certain amount of water between zero and the maximum possible flow through the turbine dependent from the actual water level, i.e. "analogous" and not discrete."
The invention now has the object of specifying a method for regulating the level of a dam installation which utilizes the existing possibilities and constructional conditions to the greatest possible extent, ensures the function of the dam installation and permits simple and accurate regulation.
According to the invention, this object is achieved by the level being regulated to a predefinable set point, at least to some extent, by starting or stopping individual or several turbine generator units or turbine generator modules.
These turbine generator units or turbine generator modules have an accurately known flow, as a result of which the quantity flowing away can be determined accurately. The quantity flowing away and, consequently, also the level of the dam installation can therefore be regulated very simply and accurately in small discrete steps by means of the individual turbine units. It is therefore no longer necessary in exceptional situations to open or to close the weir systems, which are generally very large, heavy and difficult to regulate.
As a result, the regulation becomes more flexible, since the regulation in small steps is consequently made possible and, furthermore, permits a quick reaction to changing conditions on the dam installation. Furthermore, as a result the level can be optimized very simply with regard to specific criteria.
The turbine generator units or turbine generator modules used to regulate the level can be designed very simply in constructional terms if these units or modules are operated with a substantially constant flow or with a constant output, since then no equipment for regulating the flow or the output has to be provided. The units or turbines therefore have only two operating
points, namely in operation or out of operation, which also simplifies the regulation considerably.
If the level is regulated at least to some extent by opening or closing at least one weir system, in certain situations the quantity flowing away can be increased quickly. This is primarily expedient as a safety measure in situations where the flow through the turbine units is no longer sufficient to discharge the inflowing quantities of water again, or where the outflow from the dam installation has to be reduced very quickly.
It is particularly advantageous to predefine an upper turbine switching level or alarm level at which, when it is reached, turbine generator units or turbine generator modules are started and/or weir systems are opened.
It is likewise advantageous, when a predefined lower turbine switching level or alarm level is reached, to stop turbine generator units or turbine generator modules and/or to close weir systems.
As a result, the maintenance of the required limiting values for the level is ensured and, at the same time, the number of switching manipulations of the turbine units is reduced.
The generation of electrical power by the turbine units can be maximized if ail the turbine generator units or turbine generator modules are started first and only then are the weir systems opened. Likewise, maximization of the generation of electrical power is achieved if all the weir systems are opened first and only then are the turbine generator units or turbine generator modules stopped. By means of these measures, the flow through the turbine units is maximized, which has a directly positive effect on the amount of power generated.
It is quite particularly advantageous if, when a predefined turbine switching level and/or alarm level is reached, an alarm signal is generated and/or indicated, since it is then possible to react directly and without any time delay to the current critical situation. These alarm signals can, for example, be of an acoustic and/or optical nature.
If automatic switching manipulation to start or stop turbine generator units or turbine generator modules and/or the opening or closing of weir systems are initiated by the triggering of an alarm, the regulation of the level can be carried out automatically to the greatest possible extent without any operating personnel required on site.
By drawing up predictions about levels to be expected in the future, and the associated opening and closing of turbine generator units or turbine generator modules and/or weir systems by using these predictions, it is possible to react in a predictive way to large level changes to be expected, as a result of which the switching frequency of the weir systems can be reduced.
If the regulation systems of the levels of a plurality of dam installations following one another are coupled to one another, and individual dam installations are regulated by a higher-order regulation system in such a way that the levels of these dam installations are optimized whilst taking each other into account, then an optimum level can be achieved far beyond a single dam installation, along a long section of the water course. As a result, the frequency of starting and stopping turbine units is reduced and, at the same time, more uniform power generation can be achieved over a relatively long time period.
A further advantageous expansion of the regulation concept can be achieved if the number of turbine

generator units or turbine generator modules to be started or stopped is determined in advance and they are started and stopped at the same time, since then the switching manipulations required to correct the level can be carried out in one sequence. It is beneficial to determine the number of turbine generator units or turbine generator modules to be started or stopped by using the current power demand and possibly also by using a level to be expected in the future, as a result of which optimum utilization with regard to the power demand, the units and modules is achieved.
It is quite particularly advantageous to optimize the regulation systems of the levels with regard to the power generation. The optimization is very advantageously carried out with the aid of a mathematical model which, in order to improve the optimization results, takes account of specific states and boundary conditions, such as the temporary opening or closing of weirs, dams, sluices and, if appropriate, the raising of turbine generator or turbine generator modules, inputs from the operating personnel, stored empirical values, physical laws, such as the amount of water evaporated or seeping away, and current or predictive meteorological data, such as rainfall to be expected, temperature predictions, etc. Furthermore, by using the mathematical model and taking account of the current inflow and outflow and/or that to be expected and the current power demand and/or that to be expected, the optimum number of turbine generator units or turbine generator modules to be started or stopped can be determined very advantageously.
The set point used for the regulation is advantageously level over a predetermined time period, such as a year. The power to be generated can be predefined over a predetermined time range, preferably one day, and the level can be regulated in such a way that the predefined power generation course can be maintained as

accurately as possible. As a result, optimum utilization of the action of obtaining power is achieved whilst ensuring the actual function of the dam installation. At the same time, it is ensured by this means that the resources of the dam installation are utilized to the greatest possible extent.
If the levels of one or more dam installations can be regulated from a central control center, additional monitoring and control devices on site can be saved, which has a very positive effect on the costs.
If the set point for the level is predefined for a purpose which is not used for obtaining power, for example for ship traffic, irrigation, etc, the originally conceived operation of the dam installation is not impaired. Obtaining power is then an additional advantage, which can be achieved without any restrictions on the operation.
In practice, it proves to be advantageous if at least 10, preferably 20 to 500, turbine generator units which can be started and stopped are used on a dam installation.
It is furthermore very advantageous if the dam installation has a plurality of piers, between which the medium can flow past, a predetermined number of turbine generator units or turbine generator modules being arranged between two adjacent piers and supported on the piers. As a result, already existing structures of the dam installation can be used directly for retrofitting, as no complicated rebuilding work is necessary.
A very compact design variant is obtained by the equipment for starting and stopping turbine generator units or turbine generator modules being integrated in the units or modules and supported on the piers by the

unit or the module. As a result, the necessary constructional measures on the dam ' installation are also minimized. A further variant provides for the equipment for starting and stopping turbine generator units or turbine generator modules being supported directly on the piers.
The turbine generating units or turbine generator modules can be removed very simply from their operating position, for example for maintenance work or to open the flow cross section in certain situations, if said units or modules are arranged such that they can be raised and lowered.
A quite particularly advantageous application finds the regulation according to the invention of the level of a dam installation in a drinking water reservoir, an irrigation dam, a flood retention basin, a dam for regulating a navigation or a dam station in a hydroelectric power station.
The present invention will be described by using the exemplary, simplified and nonrestrictive figures 1 and 2, in which
fig. 1 shows a front view of a dam installation with turbine generator units,
fig. 2 shows the basic principle of the regulation according to the invention and
fig. 3 shows an extended regulation concept.
Fig. 1 shows, in schematic and simplified form, a dam installation 1, for example a dam, for damming a liquid, preferably water in the course of a river, having two piers 4 in this exemplary embodiment, between which a number of turbine generator units 2, ten -here, are arranged. These turbine generator units 2

are in this case supported and held by the piers 4. The turbine generator units 2 are combined to form a turbine generator module 3 and, as required, can be lifted out of the dam installation 1 as a module by a lifting device, not illustrated. Furthermore, the dam installation 1 can comprise a weir system, not illustrated, with which the outflow of the medium from the dam installation 1 can be wholly or partially opened or stopped.
The turbine generator units 2 can be shut off in an adequately well-known manner, for example by an intake-pipe closure, such as a bulkhead or an iris diaphragm, individually or in groups, such as the entire turbine generator module 3, so that no water can flow through the turbine generator units 2 and consequently, no electrical power is generated by these units.
It is obvious that such a dam installation can also comprise more than two piers and that more than the turbine generator units 2 illustrated in fig. 1 can be arranged between two piers. In practice, it is entirely conceivable to integrate any desired number of such turbine generator units 2, preferably 20 to 500, in a dam installation.
Such turbine generator units 2 can of course also be used in any desired dam installations other than those described in fig. 1, such as drinking water reservoirs, irrigation dams, flood retention basins, etc, it being possible for the regulation concept described below to be used for the level of any type, however.
In the following text, by using fig. 2, the basic principle of the regulation concept according to the invention of the level of any desired dam installation with integrated turbine generator units 2 will be explained. Fig. 2 illustrates two graphs, the first shows the water level P over the time t, and the second the quantity QA flowing away from the dam installation

over the time t. A target level ZP is predefined for the dam installation, for example by the operator. The current level P may then vary within likewise predefined upper and lower turbine switching levels TsP0, TSPQ. These levels result from the requirements on the dam installation, for example the ship traffic on a river requires specific minimum and maximum water levels. Furthermore, upper and lower maximum levels MP0, MPa, which must not be violated, are defined for the dam installation. Should these maximum levels nevertheless be violated in exceptional situations, certain emergency measures, for example the shutting off or opening of further dam installations placed upstream, the opening of existing emergency sluices, the lifting of the turbine generator units 2 or modules 3, etc., can be initiated, depending on the dam installation.
The starting point of the description of the regulation method is a state in which the inflow and the outflow quantities are equal and the level P does not change. In this state, an arbitrary number of turbine generator units 2 or turbine generator modules 3 are already open, so that a certain quantity of water Qfi already flows away through these units and electrical power is generated.
At the time to, the level P of the dam installation then rises, for example because of rainfall, starting from the target level ZP and, at the time tsi reaches the upper turbine switching level TsP0. At the latest at this time tsi, automatically or by the operating personnel, one or more further individual turbine generator units 2 or turbine generator modules 3 are then started in order to increase the quantity QA flowing away. As a result, more electrical power will be generated simultaneously, so to speak as a secondary effect. This increase in the quantity flowing away is a discrete increase QTE or a multiple thereof, and corresponds exactly to that quantity of water which can flow through the turbine generator unit or turbine
generator modules. Since the level P increases further,
at the times ts2 and tS3 further turbine generator units
2 or turbine generator modules 3 are started, as a
result of which the quantity QA flowing away is further
increased discretely by AQTE or a multiple thereof in
each case. This is repeated until the level falls below
the upper turbine switching level TsP0 again. If all
the turbine generator units 2 or turbine generator
modules 3 should already have been started and the
level P rises further, then further weir systems which
may possibly be present can also be opened, as a result
of which the quantity QR flowing away is increased
further. Weir systems should in principle be opened
only when all the turbine generator units 2 or turbine
generator modules 3 are already started, since the
generation of electrical power can then of course be
maximized. However, it is of course also conceivable to
open the weir systems at an earlier time for specific
reasons.
As can further be gathered from fig. 2, the now falling level P reaches the lower turbine switching level TsPu at the time tS4, at which time the converse procedure begins. Turbine generator units 2 or turbine generator modules 3 are gradually stopped automatically or by the operating personnel until the level P is again within the two limiting values, the upper and lower turbine switching levels TsP0, TsPu-
Of course, by using the level increase or the level decrease, by using empirical values or by using mathematical or simulation models, it is also conceivable to determine the required number of turbine generator units 2 or turbine generator modules 3 to be started or stopped and to open or close the latter simultaneously.
As long as the level P is within one of the two limiting values, as a rule no switching manipulations are carried out, so that the quantity QA flowing away during this time period remains substantially constant.
In this exemplary embodiment, in simplified form, only three turbine generator units 2 or turbine generator modules 3 are started. In practice, however, 20 and more individually switchable turbine generator units 2 or turbine generator modules 3 are integrated in one dam installation, by which means very fine regulation of the water level P of the dam installation can be achieved.
When the upper or lower turbine switching level TsP0, TsPu is reached, an alarm can also be triggered, which is indicated, for example, in a control center or by means of an acoustic signal, and makes the operating personnel aware of the present situation, or triggers an automatic switching manipulation.
Fig. 3 now shows an extended regulation concept. In addition to the limiting levels already known from fig. 2, an upper and lower alarm level AP0, AP0 are now also predefined. These levels will in practice lie close, for example 5 cm, above and below the upper and lower maximum levels MP0, MPu, respectively.
As already described in fig. 2, the level P rises from the time ts0 and, at the time tS3, following two switching manipulations at the times tsi and ts2, reaches the upper alarm level AP0- The dam installation is ideally designed in such a way that, at this time tS3, all the turbine generator units 2 or turbine generator modules 3 are already started, so that the maximum flow through the turbines and therefore also the maximum power generation has been reached. At this time t33, in this example an acoustic alarm is generated, in order for example to make the operating personnel aware of the critical level P. Of course, this acoustic alarm can also be coupled to an automatic switching manipulation. Then, any weir systems which may still be present, are opened, as a result of which the quantity QA flowing away is increased by AQW of the weir system, and the level P begins to fall again. As a further measure for reducing the level P, provision can
also be made to raise the entire turbine generator units 2 or turbine generator modules 3.
At the time tS4, the now falling level P reaches the lower turbine switching level TsPu. If, at this time, weir systems are still open or not all of the turbine generator units 2 or turbine generator modules 3 which may have been raised have been lowered into their operating position, then these should be closed or lowered first, before turbine generator units 2 or turbine generator modules 3 are stopped, in order to maximize the power generation. In this example, at the time ts4 a weir system is stopped first and, in the further sequence, at the time ts5, a turbine generator unit 2 or a turbine generator module 3 is stopped. At the time ts6, the lower alarm level APu is then reached, an acoustic alarm is in turn triggered and at least one further turbine generator unit 2 or one further turbine generator module 3 is stopped, so that the level P again exhibits a rising trend. Of course, if necessary, a plurality of or even all the still active turbine generator units 2 or turbine generator modules 3 could also be stopped simultaneously at the time ts6.
The examples described above are in each case based on current measurements of the level or the level change. However, it is also conceivable to make forecasts about future levels, for example by taking account of levels of dam installations located upstream, weather situations, empirical values, etc. and, by using these forecasts, to regulate the quantity Qfl flowing away in a predictive manner by starting or stopping individual turbine generator units 2 or turbine generator modules 3 in such a way that the level P lies as far as possible within the upper and lower turbine switching levels TsP0, TsPu and, if possible, does not violate said levels.
The power demand varies very greatly over a certain time period. For example, more power is consumed during
the day than in the evening, or more power is consumed in winter than in summer. The method can then be applied particularly advantageously if the level P is also optimized with regard to the requirements, which are different over a time period, on the power generation. For example, overnight all the excess turbine generator units 2 or turbine generator modules 3 can be stopped. As a result, the level P rises overnight and then, can then be dissipated again by the turbine generator units 2 or turbine generator modules 3 for the purpose of generating power, as a consequence of the power demand peak times during the day.
Likewise, the level P could generally be kept at a high level in winter in order to be able to assist the coverage of power demand peaks.
Likewise, the level could also generally always be kept to the maximum level, in order that the power generation is always as high as possible.
The optimization is carried out by means of a mathematical model of the dam installation 1, in which, if required, specific other boundary conditions, such as the temporary opening or closing of additional weir systems, inputs by the operating personnel or meteorological data, can also be incorporated. At the same time, by using the mathematical model as required, specific parameters, such as the optimum number of turbine generator units 2 or turbine generator modules 3 and/or weir systems to be opened or closed can also be determined.
Expediently, the levels P of one or more dam installations 1 are regulated from one central control center. For this purpose, necessary data with regard to the levels P is transmitted to the control center, for example via a modem or by radio, and supplied to a regulation algorithm, which is preferably implemented on a computer. From the control center, the required
control signals, primarily commands to open or close
turbine generator units 2 or turbine generator
modules 3, are then supplied back to the dam
installation.
Page 126. The dam installation can be for example for
regularing navigation, drinking water reservoir anurigation dam a flood relation begin or a dam a stage
of a hydroelectric power station.






WE CLAIM:
1. A method of regulating the level (P) of a dam installation (1), preferably a dam or a weir, a number of turbine generator units (2), preferably with outputs between 100 kW and 1000 kW each, being arranged in the dam installation (1) to generate electrical power, at least some unit being arranged above one another and/or beside one another and being connected to one another to form one or more turbine generator modules (3), and the level (P) being regulated to a predefined set point characterized in that the level (P) being regulated by starting or stopping individual or several turbine generator units (2) and/or turbine generator modules (3), whereat? the quantity of water which flow through the dam installation is adjusted in discrete steps and a discrete step corresponds to the quantity of water which flows through one or several turbine generator unit (2).
2. The method as claimed in claim 1, wherein the started turbine generator units (2) are operated at constant output with a constant flow rate.
3. The method as claimed in claim 1 or 2, wherein the level (P) is regulated by opening or closing at least one additional weir system.
4. The method as claimed in one of claims 1 to 3, wherein when a predefined upper turbine switching level (TsPo) is reached, turbine generator units (2) or turbine generator modules (3) are started and/or weir systems are opened.
5. The method as claimed in one of claims 1 to 4, wherein when a
predefined upper alarm level (AP0) is reached, a weir system is opened
and/or turbine generator units (2) or turbine generator modules (3) are started.
6. The method as claimed in claim 4 or 5, wherein all the turbine generator units (2) or turbine generator modules (3) are started first and only then are weir systems opened.
7. The method as claimed in one of claims 1 to 6, wherein when a predefined lower turbine switching level (TsPu) is reached, turbine generator units (2) or turbine generator modules (3) are stopped and/or weir systems are closed.
8. The method as claimed in one of claims 1 to 7, wherein when a predefined lower alarm level (APU) is reached, weir systems are closed and/or turbine generator units (2) or turbine generator modules (3) are stopped.
9. The method as claimed in claim 7 or 8, wherein all the weir systems are closed first and only then are turbine generator units (2) or turbine generator modules (3) stopped.
10. The method as claimed in one of claims 4 to 9, wherein when a predefined turbine switching level (TsP0, TsPu) and/or alarm level (AP0, APU) is reached, an alarm signal, preferably an acoustic or optical alarm signal, is generated and/or indicated.
11. The method as claimed in claim 10, wherein automatic switching manipulations for starting or stopping turbine generator units (2) or turbine generator modules (3) and/or opening or closing weir systems are initiated by the triggering of an alarm.
12. The method as claimed in one of claims 1 to 11, wherein a prediction about a level (P) to be expected in the future is made and wherein, depending on this prediction, turbine generator units (2) or turbine generator modules (3) are started or stopped and/or weir systems are opened or closed.
13. The method as claimed in one of claims 1 to 12, wherein the regulation of the levels (P) of a plurality of dam installations (1) following one after another are coupled to one another and are regulated by a higher-order regulation system that the levels (P) of these dam installations are optimized while taking account of one another.
14. The method as claimed in one of claims 1 to 13, wherein the number of turbine generator units (2) or turbine generator modules (3) to be started or stopped is determined in advance and they are started or stopped simultaneously.
15. The method as claimed in claim 14, wherein the number of turbine generator units (2) or turbine generator modules (3) to be started or stopped is determined by using the current power demand.
16. The method as claimed in claim 12 and claim 14, wherein the number of turbine generator units or modules to be started or stopped is determined by using a level (P) to be expected in the future and a power demand to be expected in the future.
17. The method as claimed in one of claims 1 to 16, wherein the regulation systems of the level (P) are optimized with regard to the power generation.
18. The method as claimed in claim 17, wherein the optimization of the power generation is carried out with the aid of a mathematical model.
19. The method as claimed in claim 18, wherein the optimum number of turbine generator units (2) or turbine generator modules (3) to be started or stopped is determined by using the mathematical model, taking account of the current inflow and outflow and/or that to be expected and the current power demand and/or that to be expected.
20. The method as claimed in claim 19, wherein the temporary opening or closing of weirs, dams, sluices and, if appropriate, the raising of turbine generator units (2) or turbine generator modules (3) are determined or taken into account by using the mathematical model.
21. The method as claimed in claim 19 or 20, wherein inputs from the operating personnel, stored empirical values, physical laws, such as the quantity of water evaporating or seeping away, etc., and current or predictive meteorological data, such as rainfall to be expected, temperature predictions, etc., are taken into account in the mathematical model.
22. The method as claimed in one of claims 1 to 21, wherein the level P of the dam installation (1) is predefined over a predetermined time period, for example 1 year, and this predefinition is used for the regulation, in particular as a set point.
23. The method as claimed in one of claims 1 to 22, wherein the power to be generated is predefined over a specific time range, preferably one day, and the level (P) is regulated in such a way that the predefined power demand course is maintained as accurately as possible.
24. The method as claimed in one of claims 1 to 23, wherein the
turbine generator units (2) or turbine generator modules (3) are raised in
order to open the flow cross section.
25. The method as claimed in one of claims 1 to 24, wherein the levels
of one or more dam installations are regulated from a central control
center.
26. The method as claimed in one of claims 1 to 25, wherein the set point for the level (P) is predefined for a purpose which is not used for obtaining power, for example for navigation, irrigation, etc.
27. The method as claimed in one of claims 1 to 26, wherein at least 10, preferably 20 to 500 startable and stopable turbine generator units (2) are used on one dam installation.
28. A System for regulating the level (P) of a dam installation (1), preferably a dam or a weir, having a plurality of turbine generator units
(2) which are arranged above one another and/or beside one another and
are connected to one another to form one or more turbine generator
modules (3) and a predetermined number of turbine generator modules
(3) being arranged beside one another and supported on the dam
installation (1), characterized in that equipment for starting and stopping
individual or several turbine generator units (2) or turbine generator
(modules (3) being provided for regulating the level (P) of the dam installation (1) and whereat by the starting and stopping the quantity of water which can flow through the dam installation is adjusted in discrete steps, which correspond to the quantity of water which can flow through one or several turbine generator unit (2).
29. The system as claimed in one of claims 28, wherein the dam
installation (1) has a plurality of piers (4) between which the medium flows past, a predetermined number of turbine generating units (2) or turbine generator modules (3) being arranged between two adjacent piers (4) and supported on the piers (4).
30. The system as claimed in claim 29, wherein the device for starting and stopping turbine generator units (2) or turbine generator modules (3) is arranged to be integrated in the units or modules and is supported on the piers by the unit or the module.
31. The system as claimed in claim 30, wherein the device for starting and stopping turbine generator units (2) or turbine generator modules (3) is supported directly on the piers.
32. The system as claimed in any of the preceding claims, wherein the turbine generator units (2) and/or turbine generator modules (3) are arranged such that they can be raised and lowered.
33. The system as claimed in any of the preceding claims, wherein a central control center is provided, from which the level (P) of one or more dam installations (1) can be regulated.

Documents:

1220-delnp-2004-abstract (asfile).pdf

1220-DELNP-2004-Abstract.pdf

1220-delnp-2004-claims (asfile).pdf

1220-DELNP-2004-Claims (Granted).pdf

1220-delnp-2004-claims(cancelled).pdf

1220-delnp-2004-complete specification (as files).pdf

1220-delnp-2004-complete specification (granted).pdf

1220-delnp-2004-correspondence-others.pdf

1220-delnp-2004-correspondence-po.pdf

1220-delnp-2004-description (complete) (as.file).pdf

1220-DELNP-2004-Description (Complete).pdf

1220-delnp-2004-drawings.pdf

1220-delnp-2004-form-1.pdf

1220-delnp-2004-form-19.pdf

1220-delnp-2004-form-2.pdf

1220-delnp-2004-form-3.pdf

1220-delnp-2004-form-5.pdf

1220-delnp-2004-gpa.pdf

1220-delnp-2004-pct-210.pdf

1220-delnp-2004-pct-304.pdf

1220-delnp-2004-pct-308.pdf

1220-delnp-2004-pct-338.pdf

1220-delnp-2004-pct-409.pdf

1220-delnp-2004-petition-137.pdf

1220-delnp-2004-petition-138.pdf

abstract.jpg


Patent Number 242961
Indian Patent Application Number 1220/DELNP/2004
PG Journal Number 39/2010
Publication Date 24-Sep-2010
Grant Date 22-Sep-2010
Date of Filing 06-May-2004
Name of Patentee VA TECH HYDRO GMBH & CO.
Applicant Address PENZINGER STRASSE 76, A-1141, WEIN, AUSTRIA
Inventors:
# Inventor's Name Inventor's Address
1 GUNTHER HESS GLIMPFINGERSTRASSE 19, 4020 LINZ, AUSTRIA
2 HEINZ PANHOLZER PARZERWEG 69, 4203 ALTENBERG, AUSTRIA
PCT International Classification Number F03B 15/14
PCT International Application Number PCT/EP02/13278
PCT International Filing date 2002-11-26
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 A 2001/2001 2001-12-20 Austria