Environmental protection and energy Customized development ...

PARTNER
Versalspitze
2.000 m
Kopssee
Lake
1.809 m
Surge tank
Kopswerk ll
Cavern
Entry tunnel
L 188
from Illwerke was to develop
and build their most powerful
pumped storage power station,
Kopswerk II. „Kopswerk II
will optimize the two renewable
energy sources of hydro-power
and wind energy, by allowing
precisely coordinated interplay
between the two”, says illwerke
vkw CEO Dr. Ludwig Summer.
„With this power station, we
can consolidate our good position
as a supplier of peak-load
and control-load energy on the
European electricity market.”
Focus on environmental
protection.
The power station is mainly located
inside the mountain and
is hardly visible from outside.
No additional water resources
are being used, as the power
station uses the Kopssee Lake
and the existing Rifa balancing
reservoir as the lower reservoir.
This was an important requirement
for being able to successfully
conclude, in record time,
the strict environmental impact
assessment being performed in
Vorarlberg for the first time. The
purpose of supervising the ecological
integrity of the construction
was to keep interference for
Kopswerk II.
Turbine and pumping capacity:
Generator power:
Gross head:
No. of generator sets: 3
Running speed:
man and nature at a minimum.
In 1958, the plant at Lünersee
was regarded as the most powerful
pumped storage power station
in the world. Now Kopswerk
II ranks as what is currently the
most modern pumped storage
power station. Vorarlberg is
again living up to its reputation
as the “hydro-power pioneer”.
KRAL pumps used in
state-of-the-art power
station technology.
Kopswerk II is designed as a
pumped storage power station.
The power station takes advantage
of the drop between the
Kopssee Lake (1.800 m) and
Partenen-Rifa (1.000 m). The
water of the Kopssee Lake is
fed to the power plant via a
pressure tunnel and a highpressure
tunnel. The generating
sets, which comprise turbines,
pumps and generators,
are housed in a generator cavern,
the transformers in a separate
transformer cavern. The
water used in Kopswerk II then
flows into the Rifa balancing reservoir
via a tailrace tunnel. This
serves both as a tailrace balancing
reservoir and as a pumping
water storage reservoir.
The supply systems for the lubricating
oil for maintaining the
footstep and radial bearings of
the power station turbines and
pumps are fitted with KRAL
pumps from the K2900 series,
with additional pumps from the
CK series.
Rifa balancing
reservoir 1.005 m
450 megawatts
600 MVA
approx. 800 m
500 rpm
KRAL AG, which is also a successful
Vorarlberg company,
provides us with an extensive
range of pump products that
meets in full all our requirements
with regard to performance
and reliability.
Information provided by
illwerke vkw
Andreas Neuhauser
Communications Manager
22 Inside