Siemens 2013 Annual Report Download - page 19


om natural gas from the earlier level of % to %
w need one-third less natural gas to produce the
hoose Siemens as its partner for this project
?
ed thinking about repowering the turbine unit
ious technical possibilities, and several companies
s for turnkey solutions. One argument in favor of
as turbines fit in perfectly with our modernization
ee of operational reliability was also important to us, and
h Siemens’ very good references in this respect. In
s, Siemens had built more than a hundred similar turbines,
aised by their operators.
h that OGK- has commissioned
nit  until .
s in line with our philosophy. We prefer it when the
es responsibility for maintaining and servicing its
h Siemens is for twelve years, and we’re confident
oblems with service and maintenance during this
he upgrade of Unit
 having on the
e one! Since the power plant now utilizes natural
han before, we’ve substantially lowered our emis
-
nitric oxide. What’s more, we no longer need to
der to generate electricity. Unfortunately, that used
y during peak load times in the autumn and winter. In
t a few months after the upgrade was completed,
h the use of heavy oil for the first time ever.
er of a major power plant operator
ou see the sustainable energy mix of
tainable energy mix in the European part of our
proving our efficiency in burning fossil fuels. The
ert our older steam power plants into advanced
er plants. We’ve only recently begun to use this technol
-
aded combined cycle power plants are also my
ting the growing demand for electricity in Russia
ption of primary energy.
- planning in this regard
?
pressed with the results of Siemens’ upgrade of
he moment, OGK- is building two new units, at the
er plants, using combined cycle turbines from
ojects. And the construction of a third unit is in the
17
Efficient power transmission
Distributing power intelligently
HVDC – High-voltage direct-current transmission HVDC – High-voltage direct-current transmission
Conventional alternating-current transmission Conventional alternating-current transmission
Source: SiemensSource: Siemens
Comparison of power transmission systems
(including con-
version losses)
power loss
 – %
HVDC
power loss  – %
Conventional
Ideally, renewable energy sources are utilized where they’re most
abundant. However, installations for harvesting renewables are
often located far from consumption centers, making the expansion
of long-distance transmission grids a key priority. Today’s grid of
choice is based on high-voltage direct-current (HVDC) transmission
technology, which is one of our strengths. We’re a leading provider
of products and solutions that enable the low-loss transmission of
large amounts of electricity over long distances.
In consumption centers, the growing but fluctuating feed-in of
electricity from renewable sources can lead to supply instability.
Our smart grids safeguard the stability and security of power sup-
plies – for example, by balancing supply and demand with the help
of innovative software solutions.
Because the amount of power provided by the wind and the sun
fluctuates, energy storage solutions are becoming increasingly
important. We’re working intensively to develop new solutions for
storing large quantities of surplus power. Among other projects,
we’re testing electrolysis systems that convert surplus electricity
into storable hydrogen, which can then be used to power fuel-cell
vehicles, for example.