Efficient transformers for the grid integration of wind power - Mature and durable transformer technology for wind power units and wind farms ...
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Efficient transformers for the
grid integration of wind power
Mature and durable transformer technology for wind power units
and wind farms
www.siemens.com/energy
Answers for energy.
Wind – a key to the future of energy 2
Renewable sources of energy are playing an increasingly Meeting the challenges associated with harvesting wind
important role due to growing energy consumption world- power viably and sustainably, while securing a high return
wide and the need for environmentally friendly solutions. on investment, requires state-of-the-art technology and
Wind power is one of these solutions, with an enormous expertise.
potential for the new energy age.
As the only energy infrastructure supplier that provides
Trendsetting Siemens technology helps harvest this con- products, services, and solutions along the entire energy
tinuous source of clean, carbon-free energy in a highly conversion chain, Siemens is the ideal partner for meeting
efficient manner. Benefiting from 30 years of continuous all manner of challenges specific to the wind power busi-
presence in the wind power industry, Siemens supplies ness in a secure, reliable, and profitable manner.
extremely reliable equipment for onshore and offshore
wind power units of every size.
3
Highly efficient Siemens transformer solutions: customized low-loss transmission 4
Technologically advanced transmission systems require A convincing range of products and solutions
top-quality transformers in order to generate and infeed Today’s extensive Siemens product range comprises two
wind power economically and reliably. Tailored to cus main transformer types, GEAFOL cast-resin transformers
tomers’ precise needs, Siemens top-quality transformers and liquid-filled transformers. Both types can be custom-
guarantee low-loss transmission, optimal efficiency, and ized in detail to meet individual customer requirements.
unmatched safety right from the very start of the energy
All Siemens transformers boast state-of-the-art efficiency
conversion chain.
levels thanks to their low no-load and load losses. Environ
Siemens has been building distribution transformers for mentally friendly, extremely safe, and highly reliable, they
over one hundred years. Experience, ongoing research, are available worldwide with attractive delivery times.
and close cooperation with the world’s leading wind
Comprehensive experience and expert engineering
power turbine manufacturers have seen Siemens develop
in transformer technology
various types of transformers and integrate them into all
Siemens’ unparalleled experience, supreme technical
types of wind power turbines and wind farms all around
know-how, and the enthusiasm of more than 8,000
the world, whatever the location.
employees make Siemens one of the world’s leading
and most reliable producers of technologically advanced
transformers.
9
Hitting the spot
for every demand
GEAFOL based on decades of experi- resin transformers require
transformers ence, have enabled the minimal installation effort
development of transformers and offer a range of various
More than 100,000 GEAFOL that have been optimally network concepts for optimal
cast-resin transformers are adapted to both onshore and system efficiency. Various
currently in operation world extreme offshore conditions. high-voltage and low-voltage
wide. connection options allow
Installed at the top of the
Siemens’ electrical, techni- Siemens GEAFOL trans
wind turbine, GEAFOL cast-
cal, and thermal know-how, formers to be tailored to
Liquid-immersed nology. Hermetically sealed, tems for easy installation,
distribution they can be installed out- ranging from normal porce-
doors without special hous- lain to plug-in bushings.
transformers ing and ensure minimal
Standby power losses are
Siemens’ liquid-immersed maintenance requirements.
extremely low, which
transformers provide an inno-
The devices feature a range ensures maximum overall
vative and highly reliable
of standard connection sys- efficiency. The fire protection
approach to transformer tech-
Power order to efficiently transmit Offshore demands on trans-
transformers the bundled energy from formers are much more chal-
the platform to the coast. lenging as compared to aver-
Offshore AC power trans- age onshore equipment.
formers increase the voltage Additional onshore AC power
Siemens transformers are
level of the electricity gener- transformers transmit the
comprehensively optimized
ated by the wind turbines power to the areas of
to meet these challenges
to usually about 150 kV in consumption.
with regard to:
5
meet customer’s needs at all safety. In addition, minimum
times. maintenance is required on
these devices and they are
GEAFOL transformers are
extremely easy to repair. That
flame-retardant and self-extin-
is why GEAFOL transformers
guishing. They meet the high-
installed in wind turbines can
est fire protection and envi-
truly play to their strengths.
ronmental requirements and
ensure maximum operating
capability of these trans- In terms of environmental
formers has been optimized considerations, the insulating
using low-inflammability liquids are biodegradable
dielectric insulation liquid and the transformers can be
synthetic ester, which com- recycled, which means that
plies with IEC61099. waste is kept to a minimum.
weight and size fully encapsulated connec-
tion technology
freedom from maintenance
platform vibrations
corrosion protection
forces during the move-
ment of the platform to
its final offshore position
6
HVDC the availability of electric
transformers power supply on offshore
platforms, or transmitting
Generally, areas of high power via submarine cables
energy consumption are not across the sea are perfect
close to areas of generation. examples of where HVDC
Connecting offshore wind is the preferred solution
farms to the grid, increasing for providing efficient and
Shunt reactors sea cables, growing trans-
In DC networks, shunt reac- mission distances, and
tors are widely used in the increasing network capaci-
system to limit overvoltages ties, these reactors play an
and short-circuit currents. In increasingly important role
view of the growing number in the modern network
of high-voltage overhead system.
lines and high-voltage sub-
Service they are in use day and night
Transformers of any type are for decades, wear and tear
a huge investment. And they inevitably takes its toll.
are key to the flawless opera- This is why Siemens has
tion of entire networks. No developed a comprehensive
doubt they are designed to service concept for trans-
last for decades, but since formers that not only
7
r eliable power transmission and the ability to stabilize c ompact and adaptable
over long distances. interconnected AC networks. station layout, lower space
requirements
HVDC systems offer a num- Siemens’ specially designed,
ber of technical advantages, IGBT-powered HVDC PLUS r educed losses thanks to low
most notably the nearly ideal system provides even more switching frequencies
sinusoidal-shape waveform, advantages:
lower time and cost
the independent control of
demands from planning all
active and reactive power,
the way to commissioning
Made for every installation. Due to the dis- of the line, and its transmis-
requirement tance bridged, any subsea sion capacity, a shunt reactor
cable is a natural capacitor is required at the line termi-
Siemens shunt reactors meet
running in parallel with the nals. A liquid-immersed shunt
all specified requirements in
transmission line. It causes a reactor is the solution
terms of voltage, rating, type
considerable voltage increase. of choice here. Its advanced
of operation, noise emission
design and production tech-
and loss levels, type of cool- Depending on the transmis-
nology ensure low loss and
ing, transportation, and sion distance, the profile
noise emissions levels.
extends their life, but also Siemens experts worldwide It goes without saying that
reduces their impact on the perform services such as con- Siemens also offers spare
environment, minimizes dition assessment and moni- parts service, repairs and ret-
planned and unplanned toring, early fault detection, rofits, and extensive consult-
downtime, and preserves the or lifetime extension through ing services that provide value
value of transformers in the targeted measures. added right from the earliest
most effective way, lowering planning stage of a project.
operating costs.
8
1 2 3 4
Experience and 1 Robin Rigg, UK
The transformer plant in Kirchheim
(Germany) furnishes several wind
expertise you can farms all around the world. For the
Robin Rigg offshore wind farm in the
rely on
UK with a total power of 180 MW
generated by 60 turbines, GEAFOL
transformers were delivered that
were installed in the nacelles.
Our services begin at your 2 La Fatarella, Spain
starting point The La Fatarella wind farm in Spain
Large-scale wind farms, as well as single has 21 turbines generating 50 MW.
wind power turbines, require professional The 54.6 MVA transformers installed
project management and partners who in the wind farm are liquid-
are able to supply both expert knowledge immersed distribution transformers
and a position to see the big picture at from the transformer plant in Weiz,
every stage of the project – partners like Austria.
Siemens who supply a comprehensive
range of targeted products, solutions,
and services that provide real value 3 Gardunha, Portugal
added. The Gardunha wind farm comprises
57 turbines generating 114 MW.
From the very first stages of planning and
More than 2,000 special transform-
the outline of adequate financing solu-
ers (SILFO) for wind turbines have
tions through the construction of new
been supplied by the Sabugo trans-
plants and consultancy on upgrade proj-
former plant in Portugal.
ects to life-long service and maintenance,
Siemens offers everything you need.
That’s why Siemens’ customized trans-
formers are an indispensable part of
today’s wind energy solutions, and they
do their bit in shaping the new energy
age around the world.
105 6 7 8 9
4 Sicily, Italy 7 Greenwich, Canada State-of-the-art
The Siemens transformer plant in The transformer plant in Bogotá production facilities
Trento produced 220 KV 50 MVA is the supplier for wind farms in
transformers for the Lago Arancio America. For the Greenwich wind
for cutting-edge
wind farm in Italy. These transform- farm with 43 turbines generating product quality
ers ensure grid access for the wind nearly 100 MW, the plant delivered
farm, which has a total of 137 tur- 46 liquid-immersed, pad-mounted Thanks to large investments
bines and generates 46 MW of distribution transformers with a in production sites and a pro-
power. With its associated wind power rating of 2.6 MVA each. The fessional team of developers
farms Rocca Ficuzza, Nebrodi, and plant also manufactures medium- fully engaged in wind power
Alcantara, the overall production power transformers for the connec- projects, Siemens is able to
exceeds 200 MW of installed power. tion of wind farms to the grid. offer cutting-edge transformer
technology tailored to the
demands of wind power units.
5 Monte Grighine, Italy 8 Lillgrund, Sweden
Excellent logistics and manu-
The Monte Grighine wind farm in Power transformers for wind farms
facturing sites at selected
Italy uses GEAFOL transformers from can also be installed on offshore
locations worldwide ensure
Kirchheim, Germany. 43 turbines platforms. The 120 MVA medium-
the secure supply of Siemens
generate nearly 100 MW of power. power transformer for the Lillgrund
products at all times. In addi-
wind farm in Sweden was manufac-
tion, a tight and powerful
tured in Dresden (Germany), and has
network of lead and back-up
6 Jiangsu, China a corrosion protection for maritime
manufacturing facilities
Asia also uses Siemens transformers climate conditions.
ensures extremely fast deliv-
from Europe for their wind farms:
ery. Siemens has proven itself
21 liquid-filled distribution trans-
to be a first-class supplier
formers from Weiz (Austria) with a 9 BorWin2, Germany
of state-of-the-art solutions
rating of 54.6 MVA were installed in The transformers for the BorWin2
through timely completion
a wind farm equipped by Siemens wind farm in Germany came from
of hundreds of wind power
Wind Power, generating 50 MW off Nuremberg. Two HVDC transformers
transformers in recent years.
the eastern coast of China. (one onshore 585 MVA, one off-
shore 590 MVA) and two reactors Siemens transformer factories
(19 MVA and 8 MVA) were ordered are located in the Americas,
to transmit the total wind farm Europe, Asia, and Russia to
power of 800 MW. serve the rising global
demand of transformers for
wind power generation now
and in the future.
11Published by and copyright © 2011: Siemens AG Energy Sector Freyeslebenstrasse 1 91058 Erlangen, Germany For more information, please contact our Customer Support Center. Phone: +49 180 524 70 00 Fax: +49 180 524 24 71 (Charges depending on provider) E-mail: support.energy@siemens.com Order No. E50001-G640-A210-X-4A00 Printed in Germany Dispo 19200, c4bs No. 7480 fb 3340 WÜ 472103 WS 08111.0 Printed on elementary chlorine-free bleached paper. All rights reserved. Trademarks mentioned in this document are the property of Siemens AG, its affiliates, or their respective owners. Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract.
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