www.ecn.nl Wind Power Forecasting Arno J. Brand
www.ecn.nl
Wind Power ForecastingArno J. Brand
2 16 March 2011
Physical forecasting method AVDEAtmospheric model data
Wind (power) forecast
Physical modeling
Wind Power Forecasting
Site data
3 16 March 2011
Physical forecasting method AVDEAtmospheric model data
Wind (power) forecast
Physical modeling
State of the atmosphere in the near future
Wind Power Forecasting
Site data
4 16 March 2011
Physical forecasting method AVDE
Site data
Atmospheric model data
Wind (power) forecast
Physical modeling
State of the atmosphere in the near future
Descriptions of relevant physical processes
Wind Power Forecasting
5 16 March 2011
Physical forecasting method AVDE
Site data
Atmospheric model data
Wind (power) forecast
Physical modeling
State of the atmosphere in the near future
Environment Turbines
Correlations
Descriptions of relevant physical processes
Wind Power Forecasting
6 16 March 2011
Physical forecasting method AVDE
Site data
Atmospheric model data
Wind (power) forecast
Physical modeling
State of the atmosphere in the near future
Wind (power) expected in the near future
Environment Turbines
Correlations
Descriptions of relevant physical processes
Wind Power Forecasting
7 16 March 2011
Physical forecasting method AVDE
Site data
Atmospheric model data
Wind (power) forecast
Physical modeling
Wind Power Forecasting
8 16 March 2011
Physical forecasting method AVDE
.
.
.
.
.
.
.
.
.
Two wind speed components + Temperature + Pressure
Two vertical levels, Horizontal grid covering site
Time step 1 or 3 hour up to +48 hour
.
.
.
Wind Power Forecasting
9 16 March 2011
Physical forecasting method AVDE
.
.
.
.
.
.
.
.
.
Two wind speed components + Temperature + Pressure
Two vertical levels, Horizontal grid covering site
Time step 1 or 3 hour up to +48 hour
.
.
.
Surface roughness:
Fetch <10 km open water: fixed surface roughness length
Otherwise: Charnock relation
Obstacles:
Displacement height
Atmospheric stability via Obukhov length:
Very stable conditions: Holtslag speed and temperature profiles
Otherwise: Businger-Dyer profiles
Wind Power Forecasting
10 16 March 2011
Physical forecasting method AVDE
Geographic coordinates
Turbine hub height
Height above mean sea level
Global roughness lengths
Local roughness lengths
Displacement heights
Slope and offset on wind speed
Turbine power curve
Slope and offset on wind power
Two wind speed components + Temperature + Pressure
Two vertical levels, Horizontal grid covering site
Time step 1 or 3 hour up to +48 hour
.
.
.
Surface roughness:
Fetch <10 km open water: fixed surface roughness length
Otherwise: Charnock relation
Obstacles:
Displacement height
Atmospheric stability via Obukhov length:
Very stable conditions: Holtslag speed and temperature profiles
Otherwise: Businger-Dyer profiles
Wind Power Forecasting
11 16 March 2011
Physical forecasting method AVDE
Geographic coordinates
Turbine hub height
Height above mean sea level
Global roughness lengths
Local roughness lengths
Displacement heights
Slope and offset on wind speed
Turbine power curve
Slope and offset on wind power
Two wind speed components + Temperature + Pressure
Two vertical levels, Horizontal grid covering site
Time step 1 or 3 hour up to +48 hour
Wind speed confidence interval
Wind power confidence interval
Time step 10 or 15 minutes up to +48 hour
Wind Power Forecasting
Surface roughness:
Fetch <10 km open water: fixed surface roughness length
Otherwise: Charnock relation
Obstacles:
Displacement height
Atmospheric stability via Obukhov length:
Very stable conditions: Holtslag speed and temperature profiles
Otherwise: Businger-Dyer profiles
12 16 March 2011
Wind power forecasting mode of AVDE
Wind Power Forecasting
13 16 March 2011
Wind power forecasting mode of AVDE
air density
1.10
1.15
1.20
1.25
1.30
1.35
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
Copyright ©2006 by ECN
kg/m3
Wind Power Forecasting
14 16 March 2011
Wind power forecasting mode of AVDE
air density
1.10
1.15
1.20
1.25
1.30
1.35
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
Copyright ©2006 by ECN
kg/m3 wind direction
0306090
120150180210240270300330360
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
deg
north
west
south
east
north
Copyright ©2006 by ECN
Wind Power Forecasting
15 16 March 2011
Wind power forecasting mode of AVDE
air density
1.10
1.15
1.20
1.25
1.30
1.35
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
Copyright ©2006 by ECN
kg/m3 wind direction
0306090
120150180210240270300330360
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
deg
north
west
south
east
north
Copyright ©2006 by ECN
wind speed
0
5
10
15
20
25
30
35
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
m/s
Copyright ©2006 by ECN
Wind Power Forecasting
16 16 March 2011
Wind power forecasting mode of AVDE
air density
1.10
1.15
1.20
1.25
1.30
1.35
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
Copyright ©2006 by ECN
kg/m3 wind direction
0306090
120150180210240270300330360
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
deg
north
west
south
east
north
Copyright ©2006 by ECN
wind speed
0
5
10
15
20
25
30
35
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
m/s
Copyright ©2006 by ECN
wind power variation intensity
0.00.10.20.30.40.50.60.70.80.91.0
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
Copyright ©2006 by ECN
Wind Power Forecasting
17 16 March 2011
Wind power forecasting mode of AVDE
air density
1.10
1.15
1.20
1.25
1.30
1.35
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
Copyright ©2006 by ECN
kg/m3 wind direction
0306090
120150180210240270300330360
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
deg
north
west
south
east
north
Copyright ©2006 by ECN
wind speed
0
5
10
15
20
25
30
35
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
m/s
Copyright ©2006 by ECN
wind power variation intensity
0.00.10.20.30.40.50.60.70.80.91.0
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
Copyright ©2006 by ECN
wind power
0
2500
5000
7500
10000
12500
2008/09/24 08:00
2008/09/24 14:00
2008/09/24 20:00
2008/09/25 02:00
2008/09/25 08:00
2008/09/25 14:00
2008/09/25 20:00
2008/09/26 02:00
local time
lowhighexpected
kW
Copyright ©2006 by ECN
Wind Power Forecasting
18 16 March 2011
The experience
Wind Power Forecasting
19 16 March 2011
The experience
Forecasting services
Wind Power Forecasting
20 16 March 2011
The experience
Forecasting services
Evaluation studies
Wind Power Forecasting
21 16 March 2011
The experience
Forecasting services
Evaluation studies
Integration studies
Wind Power Forecasting
22 16 March 2011
Forecasting Service
Wind Power Forecasting
Historic Forecasts
23 16 March 2011
Forecasting Service
Wind Power Forecasting
Historic Forecasts
Four times per day
+48h forecast
Per grid connection
24 16 March 2011
Forecasting Service
Wind Power Forecasting
Historic Forecasts
Four times per day
+48h forecast
Per grid connection
June 2001 - present
4 daily +48h forecasts
Per grid connection
25 16 March 2011
Contact
Arno J. BrandECN Wind EnergyWind turbine rotor and Wind farm Aerodynamics
M: P.O. Box 1, NL 1755 ZG Petten, NetherlandsE: [email protected]: +31 224 56 4775F: +31 224 56 8214I: nl.linkedin.com/in/arnobrand
Wind Power Forecasting