Objective
3 Francis open-flume turbines which are no longer able to be renovated are to be replaced by innovatively arranged S-tube turbines with an installation position turned through 180 deg. at the Ingelfingen small hydroelectric power station. This will increase the annual output from the figure of 3000 MWh to date to approx. 4000 MWh and will ensure this output in the long term.
The S arrangement will minimize the modifications necessary to the actual structure which will mean very economical conversion costs. One turbine is to be double-regulated and variable-speed. The other will be simply impeller-adjustable and frequency-variable.
In order to improve environmental acceptability, both turbines in the section coming into contact with water are to be equipped with oil-free, selb-lubricating or water-lubricated bearings. This will thus exclude the possibility of contamination of the works water.
It has been possible to achieve the main objectives of rebuilding at the Ingelfingen power station.
- The planned increase in annual production to 4 m kWh was almost achieved with 3.7 m kWh (before rebuilding approx. 3 m kWh)
- The innovative technologies introduced are working satisfactorily for the most part. Only the water-lubricated downstream had to be reequipped on account of sealing problems between the water lubrication and works water.
- The double regulated Kaplan n?2 turbine exceeded design data as regards absorption capacity and output. Instead of the planned terminal output of 378 kW, 404 KW was achieved.
- The idea of the solely impeller-regulated turbine with variable speed was not successful. It did not result in the outputs expected. The cause of this is to be identified as due to losses arising from infavourable flow characteristics in the partial load range and during excess opening could not be compensated for by variable speed since the quantity of water also changed as the speed changed, thus working against the control circuit.
The three existing Francis twin turbines are to be removed. It is planned to leave the old generators and mechanical turbine governors at their present positions. This will preserve the old, historically important internal and external appearance of the power station.
Demolition of the ceiling between the old intake chamber and aft-bay chamber with extension of the old suction pipes. Preparation for installation of the new intake pipes made of steel.
2 installation openings are to be made in the old aft-bay chamber ceiling for installation of the new turbines at the aft-bay side of the powerhouse in the powerhouse floor.
The aft-bay chamber and the tail water are to be deepened in line with the requirements of the new turbine, whereby the old powerhouse foundations will need to be underpinned in some cases.
Installation of 2 new concrete suction pipes and preparation or readying of the aft-bay chambers for installation of the new turbines. Extension of the powerhouse staircase down to the bed of the aft-bay chamber = new turbine house floor.
The innovative part of the project is based on the following special solutions :
* S-tube turbines with an installation position turned through 180 deg.
* The impeller hubs which have been oil-filled on tube turbines to date are to be converted to water lubrication.
* Lubricated front guide bearings made of plastic water elements.
* Oil-free wicket-gate-bearings made of sintered bronze with graphite inclusions.
* Turbine 1 desined by variable speed which disperses speed increaser.
Turbine 2 is desined with classical governing for Kaplan-turbines.
Technical datas :
Number of turbines : 2
Turbine typ : Turbine 1 Turbine 2
s-tube propeller s-tube turbine
governing by governing for
variable speed which Kaplan turbines
dispenses speed increaser
Max. turbine
Discharge :7,2 m3/s 7,2 m3/s
Max. capacity 368 kW 368 kW
Max. efficiency
(l/l) 90,5% 90%
Gross head : 6,06 m
Net head : 5,80 m
Extended annual energy production : 3967 MWh
Installation of the turbine casing with intake tube and suction pipe connection fitting, in addition to transmission. After completion of the turbine assembly, control and switch cabinets there will be a dry control run of the system is to be conducted with subsequent initial water filling and step-by-step start-up of the turbines at no load and then under load followed by switch-off operations: emergency trip/turbine trip/load shedding etc. After commissioning, all parties to the contract are to jointly conduct efficiency measurements on both turbines and a comparative appraisal between the two control modes of the turbine. During a 1-2 year operating phase, water ducting is to be recorded.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
This project has not yet been classified with EuroSciVoc.
Be the first one to suggest relevant scientific fields and help us improve our classification service
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Data not available
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
7000 Stuttgart
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.