power installation of wind turbines
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Power Installation of Wind Turbines
Jens Peter Molly, DEWI GmbH
11th DEWEK 2012
Bremen, Germany
07. November 2012
SITE ASSESSMENT . WIND TURBINE ASSESSMENT . GRID INTEGRATION . DUE DILIGENCE . KNOWLEDGE . CONSULTANCY
www.dewi.de / www.ul.com
Power Installation of Wind Turbines
Power Installation of Wind Turbines
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Power Installation of Wind Turbines
G df th f t ll t ll dGrandfather of stall controlled wind turbines:
Gedser wind turbine
Denmark
1957, 24 m rotor diameter, 200 kW, 442 W/m²
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Power Installation of Wind Turbines
G df th f it h t ll d i d t biGrandfather of pitch controlled wind turbines:
Hütter W‐34 wind turbine
Germany
1957, 34 m rotor diameter, 100 kW, 110 W/m²
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Power Installation of Wind Turbines
Specific Power Installation
m²
fic
Po
wer
Inst
alla
tio
n,
W/
Strong winds
Normal winds
Weak winds
Specific lay-out
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Power Installation, kW
Sp
ecif Old wind turbines
Old Offshore lay-out
New Offshore lay-out
Power Installation of Wind Turbines
Constant rotor diameter, different power installations:
Which turbine lay‐out produces the energy at lowest cost????
Ø = const.
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Power Installation of Wind Turbines
Energy Production with Different Installed Capacities
= const
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Power Installation of Wind Turbines
Normierte Energieerzeugungskosten
t
Energy Generating Cost
c E
ner
gy
Gen
erat
ion
Co
st
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Sp
ecif
ic
Specific Power Installation, W/m²
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Power Installation of Wind Turbines
Power Duration Curves
Energia gerada = área em baixo da curvaEnergy produced = Area below the curves
Po
tên
cia,
kW
Po
wer
, kW
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Duração anualDauer pro JahrDuration per Year
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Power Installation of Wind Turbines
Rayleigh distribution
V = Wind speed at hub height
Pinst. = Capacity installed per m² rotor disc area
a
Relation of Energy Yield and Capacity Factor
rzeu
gung
, MW
h/m
²/a
erg
y Y
ield
, MW
h/m
²/a
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Ene
rgie
er
KapazitätsfaktorCapacity Factor
En
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Power Installation of Wind Turbines
Definition of Storage Capacity
ut
nd
ard
ized
Po
wer
Ou
tpu
Average power for 350 W/m²
Average power for 200 W/m²
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Duration per Year
Sta
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Power Installation of Wind Turbines
Relative Speicherkapazitäten und Energieerzeugungskosten
Storage and Energy Yield Cost
+7%
-16% 100 days
119 days
133 days +12%
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y
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Power Installation of Wind Turbines
Future tasks of the German national grid system:
Provide sufficient grid capacity for energy t d
German Extra High Voltage Grid
trade
Allow integration of geographically concentrated wind energy production
Smooth the energy fluctuations caused by renewable energies (storages, control of energy consumption, wind turbine lay-out, etc.)
Electric energy supply with acceptable
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energy cost for the consumer
Question:
Who is responsible for the optimization of the electric energy system, composed of electricity production, transportation and distribution?S. Kohler: Auswirkungen des Windenergieausbaus auf das deutsche
Übertragungsnetz.
„7. Schwetzinger Energie-Dialog“ Schwetzingen, 12.03.2008
Page 12
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