4 MARCH 2010 INTERNATIONAL WATER POWER & DAM CONSTRUCTION
WORLD NEWS
R
USSIAN PRIME MINISTER
Vladimir Putin officially restart-
ed the Sayano-Shushenskaya
hydro power plant on 24 February
by launching on-grid operation of the
640MW unit No 6.
The project had been shut down
following an incident on 17 August
2009, when, as a result of damage to
hydro power unit No. 2, water ejected
from the turbine’s crater. The water
flooded the machinery hall; power and
auxiliary equipment were damaged
and the frameworks of the machin-
ery hall building collapsed. All the ten
hydro power units were damaged and
the accident killed 75 people.
The official launch ceremony at the
project was attended by the Prime
Minister, together with Deputy Prime
Minister Igor Sechin, Energy Minister
Sergei Shmatko, JSC RusHydro
Management Board Chai rma n
Yevgeny Dod, as well as representa-
tives of regional authorities, some
federal ministries, design and con-
struction companies, R&D institutes
and equipment manufacturers.
During the visit, officials were
updated on the restoration work at
the project. With the industrial opera-
tion of unit No. 6, and the planned
launch of unit No. 5 in March, the
project will have a base capacity of
1280MW enabling it to minimize the
risks of handling seasonal floods and
ensure guaranteed water supplies
to households, industrial and social
facilities located in the hydropower
plant’s tail bay.
As part of the restoration, work
was carried out in full at hydro
power units Nos. 5 and 6 to repair
the generator equipment, and also
the turbines’ basic and auxiliary
equipment. Generator circuit-break-
er equipment has been replaced at
unit No. 6 and a stationary system of
vibration control has been installed.
Work is continuing on unit No. 5 for
equipment assembly.
In addition, the testing of pen-
stock tunnels at hydropower units
Nos. 5 and 6 has been carried out.
Specialists from the Vedeneyev
All-Russian Institute of Hydraulic
Engineering inspected the condition of
the spiral chamber, the suction tube
and other structural elements. The
condition of the penstocks’ internal
metal cladding at Nos. 5 and 6 was
inspected. Following the results of this
work, a scientific and technical report
entitled ‘Inspection of the Penstocks
at Hydropower Units Nos. 5 and 6’
was prepared with a conclusion on the
penstock condition. The inspection
results confirm the working capacity of
all the reinforced concrete frames of
units Nos. 5 and 6. All the penstocks
of the Sayano-Shushenskaya HPP will
be inspected under a special program
in 2010-2014.
Foundation slabs, building and
metalwork structures, the flow pas-
sage of unit No. 6, auxiliary and gen-
eral-purpose plant’s equipment and
the power output circuit have been
restored for the start-up operations.
In addition, completely reconditioned
systems of guidance, control, pro-
tection and automation have been
installed and adjusted. Equipment of
the main outputs chamber and the
zero terminals chamber has been
reviewed. The switchboard for the
unit’s own requirements has been
commissioned and the fire-extin-
guishing system for the cable galler-
ies has all been tested. Unit No. 5 is
currently idle running.
Units 5 and 6 were launched into
off-load operation on 30 December
2009. During the launch, the con-
trol parameters of the hydro turbine,
governor mechanism and oil pres-
sure installation were checked. In the
process of technological operations,
vibration parameters were controlled
by specialists from the scientific and
production association for research
and designing of energy equipment.
The measurements testified to the
vibration condition of the units.
The launch of unit No. 6 for on-
load operation was preceded by the
start-up work that included opera-
tional testing of the unit in all running
modes including switching to the grid.
The program of testing has been
approved by JSC Power Machines, the
manufacturer of the turbine and the
generator. The general designer JSC
Lengidroproekt has confirmed compli-
ance of the equipment, all the techno-
logical process systems and hardware
of the unit and the transformer to the
technical design specifications of the
first launch complex.
The connection of unit No. 6 to the
grid was carried out ahead of sched-
ule; the launch of unit No. 5 will take
place in March 2010 and units No 3
and 4 at the end of this year, bring-
ing up plant’s installed capacity to
2560MW.
The first stage of an additional
spillway capable of handling up to
2000m3/sec will be commissioned
on 1 June 2010.
Recently it was also announced
that UK-based Sheffield Forgemasters
International Ltd (SFIL) is to supply
hydro shafts for three of the new
replacement turbine units being sup-
plied to the plant. The order is expect-
ed to be completed by late summer.
The Sayano-Shushenskaya plant is
expected to be fully restored in 2014.
Russia starts 640MW turbine at
Sayano-Shushenskaya project
WORLD
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www.waterpowermagazine.com
Siemens buys stake in Marine Current Turbines
S
IEMENS E NERGY H A S
acquired a minority stake in
UK company Marine Current
Turbines (MCT), a pioneer in the
design and development of tidal cur-
rent energy turbines. With the acqui-
sition of a stake of just below 10%
in MCT, which is based in Bristol,
England, Siemens is entering a new
market with good future prospects
and at the same time expanding its
environmental portfolio.
“With this investment in an early
stage company we’re securing access
to an innovative technology in the field
of renewables,” said René Umlauft,
CEO of the Renewable Energy Division
of Siemens Energy. “As one of the
technology leaders in ocean power
Marine Current Turbines is a suitable
partner for us to enter the promising
ocean power sector.” Experts antici-
pate double-digit growth rates for the
ocean power market by 2020.
Marine current turbines generate
electricity by utilising sub-surface
water flows such as tidal currents.
In the MCT model the turbine is fixed
on a pile and is driven by the flow of
the tides. This technology effectively
is similar to an underwater wind tur-
bine, except that water has an energy
density of more than 800 times
that of wind. Twin rotors rotate with
the movement of the tidal flow and
pitch through 180 degrees to opti-
mally track tidal current direction and
speed. The key advantage is that the
generated power is predictable in the
tidal cycle.
Marine Current Turbines has
already successfully implemented
its first commercial demonstrator
project SeaGen in Strangford Lough
in Northern Ireland. Since November
2008, two axial turbines with a com-
bined capacity of 1.2 MW have been
feeding power into the grid. SeaGen
is therefore currently the world’s most
powerful marine current turbine.
Suitable sites are essential for the
success of such projects. In particu-
lar, coastal regions with strong tidal
currents such as those in the UK,
Ireland, Canada, France and East
Asia, offer major potential for this
ecofriendly power generation technol-
ogy. Tidal power stations are part of
the Green Grid (aka Super Grid) plan
for the North Sea. Nine European
countries are planning to connect
renewable power generation sources
like wind, tidal or hydro power to a
HVDC underwater energy grid in the
North Sea.
Martin Wright, Managing Director
of Marine Current Turbines said:
“Siemens’ investment in MCT under-
lines the significant commercial
potential that exists for tidal energy
across the globe, and enables us to
draw upon the company’s extensive
knowledge and experience in tur-
bine generation technology. We are
delighted to have Siemens on board.
Siemens is a company with an out-
standing international reputation and
will help us develop our technology
and deliver tidal energy on a commer-
cial and global basis.”