GH-BLADED模型参数.doc

Project Name
Demo_a
Date
5 Sept 2001
Engineer
EAB
Notes
Generic 2MW Offshore turbine

Version
3.41

Project file
p:\bladed\ demo_a.prj

GENERAL CHARACTERISTICS OF ROTOR AND TURBINE
Rotor diameter
80
m
Number of blades
3

Teeter hinge
No

Hub height
61.5
m
Offset of hub to side of tower centre
0
m
Tower height
60
m
Tilt angle of rotor to horizontal
4
deg
Cone angle of rotor
0
deg
Blade set angle
0
deg
Rotor overhang
3.7
m
Rotational sense of rotor, viewed from upwind
Clockwise

Position of rotor relative to tower
Upwind

Aerodynamic control surfaces
Pitch

Fixed / Variable speed
Variable

Diameter of spinner
2.5
m
Radial position of root station
1.25
m
Extension piece diameter
1.9
m
Extension piece drag coefficient
0.8

Cut in windspeed
4
m/s
Cut out windspeed
25
m/s

BLADE GEOMETRY
Distance
from root
(m)
Chord
(m)
Twist
(deg)
Thickness
(% chord)
Pitch Axis
(% chord)
Aerodyn-
amic
control
Aerofoil
section
reference
0.00
2.0667
13.00
100.0
50.00
Pitchable
1.000
1.148
2.0667
13.00
100.0
50.00
Pitchable
1.000
3.444
2.7556
13.00
64.0
38.00
Pitchable
1.000
5.741
3.4444
13.00
40.0
29.00
Pitchable
1.000
9.185
3.4444
11.00
30.0
29.00
Pitchable
1.000
16.074
2.7556
7.80
22.0
29.00
Pitchable
1.000
26.407
1.837
3.30
15.0
29.00
Pitchable
1.000
35.593
1.1482
0.30
11.5
29.00
Pitchable
1.000
38.233
0.6889
2.75
11.0
29.00
Pitchable
1.000
38.75
0.0287
4.00
11.0
29.00
Pitchable
1.000

BLADE MASS DISTRIBUTION
Distance from root
(m)
Centre of Mass
(% chord)
Mass/unit length
(kg/m)
0.00
50.00
1084.77
1.148
50.00
369.81
3.444
38.00
277.36
5.741
29.00
234.21
9.185
29.00
209.56
16.074
29.00
172.58
26.407
29.00
103.55
35.593
29.00
55.47
38.233
29.00
40.68
38.75
29.00
24.65

Blade Mass Integrals (No ice)
Blade Mass
6546.72
kg
First Mass Moment
84218.7
kgm
Second Mass Moment
1.785E+06
kgm²
Blade inertia about shaft
2.006E+06
kgm²

BLADE STIFFNESS DISTRIBUTION
Radial Position
(m)
Stiffness about Chord Line
(Nm²)
Stiffness perpendicular to
Chord Line (Nm²)
0.00
7.472E+09
7.472E+09
1.148
2.433E+09
2.607E+09
3.444
1.408E+09
2.085E+09
5.741
8.341E+08
1.425E+09
9.185
5.561E+08
1.286E+09
16.074
2.085E+08
5.648E+08
26.407
2.954E+07
1.216E+08
35.593
2.259E+06
2.433E+07
38.233
1.1382E+05
4.518E+06
38.75
3.128E+03
8.1675E+03

HUB MASS AND INERTIA
Mass of hub
14000
kg
Mass centre of hub
0
m
Inertia of hub about LSS
12000
kgm²
Total Rotor Mass
33640.2
kg
Total Rotor Inertia
6.029E+06
kgm²

TOWER DETAILS
Station Number
Height
(m)
Diameter
(m)
Mass/unit length
(kg/m)
Stiffness
(Nm²)
1.000
-15.00
3.500
2935.71
2.46E+11
2.000
15.00
3.1923
2214.09
1.43E+11
3.000
35.00
2.8846
1492.47
7.81E+10
4.000
50.00
2.7308
1131.66
5.65E+10
5.000
60.00
2.600
824.97
4.22E+10

Total Tower Mass
143777
kg
Total Turbine Mass
249417
kg

Drag coefficient for tower
0.6

Environment
Offshore

Mean sea depth
10
m
Hydrodynamic drag coefficient
1

Hydrodynamic mass coefficient
2

No movement of tower foundation
Tower base translational motion?
No

Tower base rotational motion?
No

NACELLE GEOMETRY
Nacelle width
2.5
m
Nacelle length
6
m
Nacelle height
2.5
m
Nacelle drag coefficient
1.6

NACELLE MASS
Nacelle mass
72000
kg
Nacelle centre of mass lateral offset
0
m
Nacelle centre of mass above tower top
1.3
m
Nacelle centre of mass in front of tower axis
-0.6
m
Yaw inertia of nacelle
215000
kgm²
Total Tower-head Mass
105640
kg
Total Yaw Inertia: 0° azimuth
3.69E+06
kgm²
Total Yaw Inertia: 90° azimuth
3.69E+06
kgm²

DRIVE TRAIN
Gearbox ratio
83.33

Generator inertia
60
kgm²
Position of shaft brake
High speed shaft
(Gearbox End)
Low speed shaft
Flexible

Low speed shaft torsional stiffness
1.6E+08
Nm/rad
Low speed shaft torsional damping
1.E+07
Nms/rad
High speed shaft
Stiff

GENERATOR CHARACTERISTICS
Generator model
Variable Speed

Power electronics time constant
0
s
Maximum generator torque
14400
Nm
Minimum generator torque
0
Nm
Phase Angle
0
deg

ELECTRICAL NETWORK
Network voltage
11000
V
Connecting line resistance
0
ohms/phase
Connecting line inductance
0
ohms/phase
Network resistance
0.01
ohms/phase
Network inductance
0.01
ohms/phase
Total number of turbines
1

MECHANICAL LOSS TORQUE (kNm, referred to low speed shaft)
Low speed shaft torque (kNm)
Loss torque (kNm)
0.0
23.00
960.0
37.00
1280.0
49.00

ELECTRICAL LOSSES
No load power loss
0
kW
Efficiency
95
%

POWER PRODUCTION CONTROL
Variable Speed Pitch Regulated Controller
Dynamic

Minimum generator speed
850
rpm
Maximum generator speed
1800
rpm
Optimal mode quadratic speed-torque gain
0.24
Nms²/rad²

Optimal mode maximum generator speed
1500
rpm
Generator torque set point
13403
Nm
Above-rated generator speed set-point
1500
rpm
Minimum pitch angle
-2
deg
Maximum pitch angle
90
deg
Pitch direction
to Feather

Speed transducer time constant
0
s
Power transducer time constant
0
s
Maximum negative pitch rate
-8
deg/s
Maximum positive pitch rate
8
deg/s

PI torque control of speed
Proportional gain
500
Nms/rad
Integral gain
250
Nm/rad
Desaturation time constant
0
s

Gain schedule (gain divisor)
Constant value
1

PI pitch control of speed
Proportional gain
0.0246
s
Integral gain
0.01025

Desaturation time constant
0
s

Gain schedule (gain divisor)
Look-up table based on
pitch

Pitch (rad)
Gain divisor
-0.0524
1.000
0.000
1.000
0.5236
3.000
1.000
3.000

PITCH ACTUATOR
Pitch actuator responds to
Position demand

Ramp control for step changes in input:
Disabled

Pitch position response
Passive

First order lag time constant
0.3
s
Pitch actuation
Collective

TURBINE START-UP CALCULATION
Rotor speed at start of simulation
0
rpm
Pitch angle at start of simulation
90
deg
Pitch rate for start-up
-5
deg/s
Generator speed at which it is connected to grid
850
rpm
Final pitch angle
-2
deg

NORMAL STOP CALCULATION
Pitch rate for stopping
5
deg/s
Final pitch angle
90
deg
Rotor speed for parking brake application
0.5
rpm

EMERGENCY STOP CALCULATION
Emergency pitch trip mode
Grid loss

Emergency pitch rate
12
deg/s
Final pitch angle
90
deg
Emergency brake trip mode
Overspeed

Overspeed trip for brake application
22
rpm
Rotor speed for parking brake application
0.5
rpm

SHAFT BRAKE CHARACTERISTICS
Maximum brake torque
12000
Nm
Shaft brake ramp time
1
s

IMBALANCES AND FAILURE MODES
Out of balance mass
135
kg
Radius of out of balance mass
1
m
Azimuthal position of out of balance mass
0
deg

Blade
Error in Blade Set Angle (deg)
Error in Pitch Angle (deg)
Error in Blade Azimuth (deg)
Pitch Status
Pitch Fail Angle (deg)
1.000
0.0000
0
0
OK

2.000
-0.3000
0
0
OK

3.000
0.3000
0
0
OK

MODAL ANALYSIS FOR ROTOR
Number of out of plane bending modes
3

Mode 1 damping coefficient
.01

Mode 2 damping coefficient
.01

Mode 3 damping coefficient
.01

Number of in-plane bending modes
3

Mode 1 damping coefficient
.01

Mode 2 damping coefficient
.01

Mode 3 damping coefficient
.01

Pitch angle 1
-2
deg
Pitch angle 2
20
deg
Pitch angle 3
90
deg
Rotor speed
18
rpm
Hub rotation
Free

MODAL ANALYSIS FOR TOWER
Number of fore-aft tower modes
2

Mode 1 damping coefficient
.005

Mode 2 damping coefficient
.005

Number of side-side tower modes
2

Mode 1 damping coefficient
.005

Mode 2 damping coefficient
.005

Rotor azimuth angle
0
deg

MODAL ANALYSIS
Hub rotation
Free

Rotor modes at -2.0 degrees pitch
Mode
Frequency at 18.0 rpm (Hz)
Non-rotating frequency (Hz)
Damping factor
Edgewise root slope
Out of plane 1
1.044
0.964
0.0100
0.0000
Out of plane 2
1.044
0.964
0.0100
0.0000
Out of plane 3
1.044
0.964
0.0100
0.0000
In plane 1
1.502
1.456
0.0100
0.0000
In plane 2
1.502
1.456
0.0100
0.0000
In plane 3
3.166
3.103
0.0100
-0.0191

Rotor modes at 20.0 degrees pitch
Mode
Frequency at 18.0 rpm (Hz)
Non-rotating frequency (Hz)
Damping factor
Edgewise root slope
Out of plane 1
1.166
1.098
0.0100
0.0000
Out of plane 2
1.166
1.098
0.0100
0.0000
Out of plane 3
1.166
1.098
0.0100
0.0000
In plane 1
1.422
1.372
0.0100
0.0000
In plane 2
1.422
1.372
0.0100
0.0000
In plane 3
2.977
2.910
0.0100
-0.0192

Rotor modes at 90.0 degrees pitch
Mode
Frequency at 18.0 rpm (Hz)
Non-rotating frequency (Hz)
Damping factor
Edgewise root slope
Out of plane 1
1.499
1.452
0.0100
0.0000
Out of plane 2
1.499
1.452
0.0100
0.0000
Out of plane 3
1.499
1.452
0.0100
0.0000
In plane 1
1.049
0.969
0.0100
0.0000
In plane 2
1.049
0.969
0.0100
0.0000
In plane 3
1.875
1.760
0.0100
-0.0141

Tower modes
Rotor azimuth angle
0
deg

Mode
Frequency (Hz)
Damping factor
Tower top slope
Fore-aft 1
0.472
0.0050
0.024
Fore-aft 2
3.201
0.0050
1.8033
Side-side 1
0.470
0.0050
0.0242
Side-side 2
2.885
0.0050
-9.0419

TOWER SHADOW
Tower shadow model
Potential Flow

Fraction of tower diameter to use
1

VERTICAL WIND SHEAR
Wind shear model
Exponential

Wind shear exponent
0.2

TIME DEPENDENT WIND FIELD
Wind model type
Turbulent Wind

Wind speed defined at hub height

Mean wind speed for simulation
12
m/s
Turbulent wind field height: best fit for rotor and tower

Wind direction from North
0
deg
Wind direction transient
Half wave

Amplitude of transient
0
deg
Start time of transient
0
s
Duration of transient
0
s
Flow inclination
8
deg
Longitudinal turbulence intensity
16.0108
%
Lateral turbulence intensity
12.5465
%
Vertical turbulence intensity
8.92472
%
Interpolation scheme
Cubic

Turbulence Characteristics: p:\bladed\userint\demo_a.wnd
Number of lateral grid points
15

Number of vertical grid points
15

Width of turbulent wind field
100
m
Height of turbulent wind field
100
m
Length of turbulent wind field
1804.8
m
Along-wind step size of turbulent wind field
0.88125
m
Mean wind speed for turbulence calculation
12
m/s
Random number seed
1

Spectrum type:
von Karman
(Improved)
Number of turbulence components:
3

Latitude
49.9999
deg
Hub height
61.5
m
Surface roughness length
0.1
m
Longitudinal length scale of longitudinal component
244.67
m
Lateral length scale of longitudinal component
79.6605
m
Vertical length scale of longitudinal component
59.2508
m
Longitudinal length scale of lateral component
58.868
m
Lateral length scale of lateral component
76.6657
m
Vertical length scale of lateral component
28.5117
m
Longitudinal length scale of vertical component
21.1883
m
Lateral length scale of vertical component
13.7971
m
Vertical length scale of vertical component
20.5243
m

WAVES
Spectrum: Pierson-Moskowitz

Peak spectral period
8
s
Significant wave height
3
m
Wave direction from North
0
deg
Random number seed
1

CURRENTS
Near-surface currrent
Yes

Mean wind speed at 10 m
25
m/s
Current direction from North
0
deg

Sub-surface currrent
No

Near-shore currrent
No

WIND TURBULEN