va tech hydro in india - ANDRITZ Vertical volute pumps

KARAHNJUKAR
VA TECH HYDRO Wins Order for Turbines, Generators and
all Electrical Equipment for Power Plant in Iceland
This is the second major order
that VA TECH HYDRO has won in
Iceland. At the end of the 90's the
company also supplied the
electromechanical equipment for
Sultartangi hydroelectric power
plant (2 x 65 MW).
Kárahnjúkar hydroelectric power
plant with an installed output of
690 MW and an annual energy production
of 4,450 GWh (the equivalent
of the annual energy consumption
of approx. 1 million households)
is needed to supply power to an
aluminium plant (Alcoa/USA). The
power plant will allow for the
production of 320,000 tonnes of
aluminium a year using environmentally
friendly energy.
The plant is located in the under-industrialized
east of Iceland, some
670 km from the capital Reykjavik.
The national power company
Landsvirkjun is responsible for the
construction of the power plant and
will also operate it. Iceland meets its
entire energy requirements with
renewable sources of energy. In
addition to geothermal plants,
hydroelectric power also plays a
major role in meeting Iceland's
power needs. Kárahnjúkar power
plant will increase the installed
output of hydroelectric power by
10
KEY PROJECTS
almost 70%. This fact alone demonstrates
the tremendous importance
of this power plant for the country
and the region in which it will be
built. The project is one of the
largest investment projects in Iceland's
history. The planned total investment
runs to USD 3 billion (hydroelectric
power plant and
aluminium smelting plant), a sum
which is equivalent to approximately
one third of Iceland's gross domestic
product. The project will also
break other records. Kárahnjúkar
power plant will be fed by the melt
water from Europe’s largest glacier,
the Vatnajökull. With a height of
190 m and a length of 750 m the
dam of the Hálslón Reservoir (approx.
57 km2) is the highest concrete
faced rockfill dam in Europe.
Currently three large tunnelling machines
from the Italian company Impregilio
are drilling the access of the
approximately 53 km long tunnel to
the powerhouse. The German company
Hochtief and local Icelandic
contractors have been hired to construct
the access tunnels and the
cavern. The high level of customer
satisfaction and confidence in the
quality of VA TECH products for
hydroelectric plants were important
criteria for awarding the new
contract to VA TECH HYDRO. The
scope of supply basically comprises
the six high-head Francis
turbines including digital speed
governor system, the generators
with static excitation, the generator
switchgear, the generator main
leads and the electrical equipment
for the power plant including protection
according to NEPTUN
system. VA TECH HYDRO also
supplies shut-off valves, draft tube
gates and cranes, the cooling water
supply system, oil cleaning system,
fire extinguishing plant, drainage,
emergency diesel generator, 400 kV
distribution, direct current supply,
control system, protection and cabling.
The project will be carried out
over a period of 3.5 years. Installation
will commence in early 2005
while commissioning is scheduled
for early 2007. The plant will be
handed over to the customer for
commercial operation in July 2007.
Josef Moosmann
Phone +49/751 83 2792
josef.moosmann@vatew.de
Technical data:
Output: 115 MW / 130 MVA
Voltage: 11 kV
Head: 530 m
Speed: 600 rpm
Runner diameter: 1,400 mm
Stator diameter: 4,450 mm