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

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