May 2003 ISSUE TONGBAI Page 4/5 COMPACT HYDRO in ...

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KEY PROJECTS TALAVERA AND PALOMAREJO VA TECH HYDRO Madrid was awarded a contract for the complete supply (design, manufacture, erection, and commissioning) of four Semikaplan turbines with a runner diameter of 2.85 m by the Iberdrola group. Cienersa, a company belonging to the Iberdrola group, and dedicated to renewable energies and minihydro, is building two new power stations, Talavera and Palomarejo, both located in a city 120 km away from Madrid. Iberdrola is a Global Key Account of VA TECH HYDRO, and the leading utility in installed hydropower in Spain. The permanent collaboration of VA TECH HYDRO in Spain with Iberdrola and their daughter companies this time has PORTODEMOUROS VA TECH HYDRO in Spain has signed a contract with a subsidiary company of Union Fenosa for the supply of the electromechanical equipment for the extension of Portodemouros plant. Energias Especiales, Union Fenosa´s daughter company, dedicated to the renewable energies business, decided to install an additional hydraulic turbine at its Portodemouros power plant, to use the tidal flow. Initially, this plant was equipped with two large vertical Francis turbines, but this flow was by-passed when these large turbines were out of service, with the consequent loss of energy. The design submitted by VA TECH HYDRO in Spain obtained the contract for the electromechanical equipment for this project. The plant is located in Galicia, 14 resulted in an order for the supply of four Semikaplan vertical turbines, including the turbine itself, control equipment, speed accelerator, generator, inlet gates, and stop-logs. The same type of Semikaplan turbines specially developed by VA TECH HYDRO in Spain has been delivered before to the same client for other plants with satisfactory results. Taking advantage of the similar head and flow conditions of the two stations, the northwestern region of Spain - recently known worldwide due to the Prestige accident - where Union Fenosa is the most important utility. The engineering and management of this project was entrusted to Soluziona Ingenieria, Union Fenosa´s engineering company, which has taken turnkey responsibility. The project presents specific difficulties, since the erection work, and mainly the civil works and connection to the existing penstock, have to be made with the plant in service and therefore, the duration and scheduling of downtimes are of vital importance to the customer. Following these criteria, the proposal designed by VA TECH HYDRO in Spain is based on minimizing these downtimes and reducing the head loss at the connection to the new branch with the existing penstock, using a design which shortens erection time and a project management which assures the coordination of the delivery dates of the different components to have them available just at the time they are required on site. Both approaches, de- located on the same river, the turbine design has been the same for all units, and the construction itself is carried out almost simultaneously, in a record time, as requested by the client. Alejandro Santamaría Phone +34/91 425 10 19 alejandro.santamaria@vatech-hydro.net Technical data Talavera: Output: 1,610 kW Head: 5.18 m Speed: 135 rpm Runner diameter: 2,850 mm Technical data Palomarejo: Output: 1,110 kW Head: 3.58 m Speed: 110 rpm Runner diameter: 2,850 mm sign and coordination, are possible due to the close cooperation of Soluziona Ingeniería, the VA TECH HYDRO engineering department in Madrid, the VA TECH HYDRO facility in Algete, the generator supplier -Indar- and the VA TECH HYDRO project manager. The scope of supply includes an 11 MW vertical Francis turbine, a synchronous generator, an ND 1700 butterfly valve, a penstock of 12 m in length, an outlet tube in concrete from the draft tube to the downstream level with an ND 2000 insulation valve just at the draft tube outlet, an oil pressure system, a digital speed governor, a cooling system, erection, and commissioning. Alfonso Madera Phone +34/91 425 1038 alfonso.madera@vatech-hydro.net Technical data: Output: 11 MW Head: 81.40 m Speed: 500 rpm Runner diameter: 1,280 mm
ECOBulb News First Industrial Unit in Operation at Aubas (France) The first industrial unit of VA TECH HYDRO’s ECOBulbTM turbine generator was successfully put into commercial operation in Aubas, central France, on October 31, 2002. The private customer Mr. Farges is enthusiastic about his new unit and has already received several visits by interested private energy producers. This first project consisted in replacing a damaged asynchronous generator in a forty-year old unit with a modern permanent magnetic rotor and a new stator. No changes were made on the hydraulics, providing a unique opportunity to measure the increase in generator efficiency. Other minor modifications in the water tightness concept and in the synchronizing of the unit were also made in order to increase reliability and minimize maintenance requirements. All of ECOBulbTM ‘s electrical and mechanical features like power output, power factor, and quality of power currently equate to VA TECH HYDRO’s calculations. This gives a sound basis for further development of the ECOBulbTM range. New order for one 2.5 MW unit for Casamozza (Corsica, France) By the end of 2002, the private company Société Hydro éléctrique du Golo in Corsica (France) awarded VA TECH HYDRO in France an engineering and manufacturing contract for one 2.5 MW ECOBulbTM unit to be installed on the river Golo, just south of Bastia. The decisive arguments in favor of the ECOBulbTM technical solutions were the absence of step-up gear, the high overall efficiency and the low-maintenance design. Optimum integration in the narrow gorge as well as the danger of submersion of the turbo generator in case of floods supported the other features. During the engineering phase, VA TECH HYDRO also performed several optimization steps with respect to the water passages and improved the flow pattern at the entrance of the unit while using CFD calculations. Additional project under development In Canada, Innergex II has awarded VA TECH HYDRO in Canada an engineering contract for two single regulated ECOBulbTM units of approx. 4 MW each a project named Sonoco. The engineering work has been completed and manufacturing will start soon. KEY PROJECTS During the industrialization phase, additional projects with typical features will be selected to develop the ECO- BulbTM range from 1 to 4 MW and for heads from 3 to 15 m head. Additionally, at the beginning of 2003 VA TECH HYDRO in France was awarded an engineering contract for two single regulated ECOBulb units of 1 MW each for heads of less than 3 m and 2,600 mm in runner diameter, for the Paullo power plant in Italy. Pierre Duflon Phone +33/476 85 95 25 pierre.duflon@bouvierhydro.fr Technical data Aubas: Output: 310 kW Voltage: 380 V Head: 3.20 m Speed: 214 rpm Runner diameter: 1,600 mm Air gap diameter: 1,320 mm Technical data Casamozza: Output: 2,542 kW Voltage: 3,300 V Head: 9.20 m Speed: 214 rpm Runner diameter: 2,240 mm Air gap diameter: 1,900 mm Technical data Sonoco: Output: 3,930 kW Voltage: 3,300 V Head: 6.29 m Speed: 144 rpm Runner diameter: 3,200 mm Air gap diameter: 2,200 mm 15
Page 1 and 2: May 2003 ISSUE 04 sustainable solut
Page 3 and 4: Dear Readers, In this issue of Hydr
Page 5 and 6: the results of the following test s
Page 7 and 8: steels with yield points from 355 t
Page 9 and 10: DA PU VA TECH HYDRO was awarded a n
Page 11 and 12: GRAND VERT The improvement of opera
Page 13: ect people you can imagine. For tha
Page 17 and 18: The runners will be manufactured at
Page 19 and 20: LINZ VA TECH HYDRO’s Combined Cyc
Page 21 and 22: (corresponding to 55.6% net efficie
Page 23 and 24: HYDRO 2002 in Kiris / Turkey HYDRO

May 2003 ISSUE TONGBAI Page 4/5 COMPACT HYDRO in ...

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