WWD-3 3 MW wind turbine Detailed technical specification

27 Pages·2006·2.54 MB·English

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Document WWD-1003

Prep. by EKU
Checked by GBö
Ver 1.5 WWD-3 DETAILED TECHNICAL SPECIFICATION
Appr. by

WWD-3
3 MW wind turbine
Detailed technical specification

Detailed Technical-specification WWD-3 ver 1.5.doc
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Document WWD-1003

Prep. by EKU
Checked by GBö
Ver 1.5 WWD-3 DETAILED TECHNICAL SPECIFICATION
Appr. by

Technical specification
Contents

1. General information.....................................................................................................................................4
2. General information of turbine electric systems..................................................................................6
3. Power curve...................................................................................................................................................7
4. Annual production of WWD-3/100............................................................................................................8
5. Noise level (IEC 61400-11)..........................................................................................................................8
6. Detailed technical specification................................................................................................................9
6.1. Tower...............................................................................................................................................................9
6.2. Rotor................................................................................................................................................................9
6.3. Main bearing, planetary gear and generator.........................................................................................9
6.4. Brake system...............................................................................................................................................10
6.5. Glassfiber cover..........................................................................................................................................10
6.6. Yaw system..................................................................................................................................................10
6.7. Foundation...................................................................................................................................................11
6.8. Grid connection..........................................................................................................................................11
6.8.1. Transformer technical specification......................................................................................................11
6.8.2. Switchgear, Electrical Characteristics..................................................................................................13
6.8.3 Frequency converter....................................................................................................................................15
6.8.4 Reactive power control...............................................................................................................................15
6.9. Turbine control, remote monitoring and reporting............................................................................17
6.10. Presenting the production data on the Internet..................................................................................18
6.11. Alarms...........................................................................................................................................................18
6.12. Self-diagnosis of the wind turbine.........................................................................................................19
6.13. Condition monitoring.................................................................................................................................19
6.14. Lightning protection..................................................................................................................................19
7. Earthing system..........................................................................................................................................20
8. Options..........................................................................................................................................................20
8.1. Anti-icing of blades....................................................................................................................................20
8.2. Aviation lights..............................................................................................................................................20
8.3. Service Lift inside the Tower...................................................................................................................20
8.4. High voltage switchgear...........................................................................................................................21
9. Type Approvals...........................................................................................................................................21
10. Transportation dimensions......................................................................................................................24
11. Access roads and platforms....................................................................................................................24
12. General Reservations, Notes and Disclaimers...................................................................................24
13. General drawings........................................................................................................................................25

Due to continuous development and product upgrade, WinWinD reserves the right to change or alter
these specifications at any time without notice. WinWinD® is a registered trademark of Winwind Oy.
This document contains general information about WWD-3 wind turbines. The exact scope of delivery
shall be defined in the contract.
Detailed Technical-specification WWD-3 ver 1.5.doc
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Document WWD-1003

Prep. by EKU
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Ver 1.5 WWD-3 DETAILED TECHNICAL SPECIFICATION
Appr. by

Date Revision Author Remark
April 2004 1/2004 Eku Document created
Sep 2004 4/2004 EKu An update
Apr 2005 1/2005 EKu An update
May 2005 2/2005 EKu Annual production added
Oct 2005 3/2005 EKu An update
Oct 2005 4/2005 EKu An update
30.11.2005 5/2005 Iri Electrics update
23.12.2005 1.0 GBö General corrections/additions
6.1.2006 1.1. EKu Power production corrected
1.2.2006 1.2. EKu Power curve update
20.3.2006 1.3 EKu 90 m power curve added
30.8.2006 1.5 EKu General corrections/additions
Detailed Technical-specification WWD-3 ver 1.5.doc
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Ver 1.5 WWD-3 DETAILED TECHNICAL SPECIFICATION
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1. General information

WinWinD has developed an innovative wind turbine for the market with its
WWD concept. WinWinD’s basic values include customer satisfaction and
the operational reliability of the products, as well as the win-win cooperation
achieved between the clients and WinWinD.

On the basis of thorough technical and economic research work the WWD
concept, which allows electricity to be produced with a new innovative inte-
grated power unit, was created. The basis for design was efficiency, reliabil-
ity and ease of maintenance which allows the WWD concept to offer the
most cost-effective production throughout its total life, combined with the
lowest operating costs.

WWD-3 is pitch regulated upwind wind turbine with active yaw and three-
blade rotor. The turbine consist of three main parts

Rotor
3 blades and hub, electrical pitch control

Integrated power unit
roller bearing, planetary gear and variable speed
generator with permanent magnets

Nacelle
frequency converter, transformer and accessories

The rotor hub is connected to the gearbox casing using a play-free double-
row tapered roller bearing. The bearing transfers the rotor loads directly to
the main casing, keeping the drive train free from deformation and rotor
loads. The planetary gear increases the rotating speed modestly and trans-
fers the torque to the low speed permanent magnet generator. All connec-
tion flanges are round and concentric, resulting in clearly defined borders.
This "black-box" design philosophy eases assembly and results in a well-
defined load distribution. The frequency converter transfers the full genera-
tor power. As a result the machine can use also low wind speeds with opti-
mum low rotational speed, and there is no need for slip rings as with a dou-
ble-fed generator solution.
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General
Type 3 blades, up-wind
Power control Pitch, variable speed
Rated power 3000 kW (grid side)
Rotor diameter 90 and 100 m
Cut-in wind speed 4 m/s
Rated wind speed 12,5 m/s (100 m)
13 m/s (90 m)
Cut-out wind speed 20 m/s (100 m)
25 m/s (90 m)
Design maximum 59,5 m/s (hub height)
Rotor speed 5-16 rpm
Frequency converter Located in nacelle
Transformer Transformer located in nacelle
Hub heights 80 -100 m

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2. General information of turbine electric systems

The WWD3-90m turbine has a water cooled permanent magnet synchro-
nous generator.

The frequency converter is also water cooled and installed in the nacelle.
The frequency converter consists of two separate converter units. One con-
verter unit is designed for 1,5MW and has 1500A IGBT-inverter units on
grid and generator side. This 2x1,5MW converter system is redundant, it is
possible to run only one 1,5MW converter if another converter is out of or-
der. On the grid side there is an LC-filter for reducing harmonic currents.

The main transformer is also installed in the nacelle. It is an oil-cooled fully
encapsuled version, reinforced internally to withstand vibration. Additionally
it stands on vibration dampers. Consequently all the cable connections are
made flexible. Cooling is by natural convection plus a thermostat-controlled
additional fan. The main transformer has five voltage tap settings (±2x2,5%)
to make a fine adjustment according to the local grid.

Generator Synchronous machine
Cooling Water jacket cooling around stator,
Air cooling with air/water heat exchanger
Rated gen. voltage 660 V

Rated gen. frequency 49,2 Hz
Frequency converter IGBT -Bridges on both generator and grid
side
Filter generator side dU/dt-Filter and common-mode filter
Filter grid side LC-Filter
Transformer Oil-cooled, in nacelle

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3. Power curve

The guaranteed power curve with rotor diameter of 90 and 100 m.
Air density 1.225 kg/m3. Transformer losses are not deducted.

On the right side the thrust-coefficient (for wake calculations)

v WWD-3/90 WWD-3/100
m/s kW kW
3 0 0
4 80 79
5 220 254
6 389 458
7 627 740
8 944 1117
9 1351 1595
10 1858 2103
11 2410 2505
12 2873 2870
13 3032 3032
14 3032 3032
15 3030 3030
16 3030 3030
17 3030 3030
18 3030 3030
19 3030 3030
20 3030 3030
21 3030
22 3030
23 3030
24 3030
25 3030

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4. Annual production of WWD-3/100

The calculated power production with rotor diameter 100 m.
Air density 1.225 kg/m3, Weibull-C-factor = 2.
Gross production (i.e. park losses, transformer losses, etc are not de-
ducted).

m/s MWh/a
6,0 6360
6,5 7562
7,0 8732
7,5 9841

5. Noise level (IEC 61400-11)

The noise level values shall be guaranteed according the sales agreement.
The noise guarantee will be regarded as fulfilled, if a measured sound
power level is lower or equal than the guaranteed value (the inaccuracy of
the measurement result has been noticed in the process).

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6. Detailed technical specification

6.1. Tower

Two different basic tower solutions are available. Steel tower and
concrete/steel hybrid tower.

Hub height 88 m 90 m 100 m
Number of sections 4 1 + 2 1 + 2
Colour of steel part RAL 7035 RAL 7035 RAL 7035
Steel part height 84,5 m 49,5 m 49,5 m
Concrete part height 36,5 m 46,5 m

6.2. Rotor
The rotor consists of three blades, hub and three electrical pitch
drives. The blades are made of epoxy resin reinforced glassfibre.
The blades also act as aerodynamic brakes. Normally the blades
are synchronised but in case of an emergency, each blade can be
controlled individually. The pitch system is electric and equipped
with a back-up battery or capacitor. The blades are equipped with
lightning conductors.

6.3. Main bearing, planetary gear and generator.
The rotor hub is connected to the gearbox casing using a play-free double-
row tapered roller bearing. The bearing transfers the rotor through a part of
the gear casing to the mainframe. The planetary gear increases the rotating
speed modestly and transfers the torque to the low speed permanent mag-
net generator. All connection flanges are round and concentric, resulting in
clearly defined borders. This "black-box" design philosophy eases assem-
bly and results in a well-defined load distribution. All possible deformations
due to rotor loads have been taken into consideration when designing the
gears.

The bearing has, integrated with the gearbox, forced oil lubrication. A dou-
ble radial shaft seal arrangement with grease filling in between seals to-
wards the ambient air. The manufacturer is FAG or equivalent.

The manufacturer of the gear is MOVENTAS (former METSO-DRIVES).
The low speed generator with permanent magnets is manufactured by
ABB.

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6.4. Brake system

During emergency shutdown each rotor blade acts independently as an
aerodynamic brake. The computer controls the system with the help of
anemometers, wind vane and other sensors.

The stop procedures are:

The normal stop: the blades synchronously driven into storm
proofing position with a pitch speed of 4 degrees/s without us-
ing the mechanical brakes.

The emergency stop (low-level): the blades are driven with 4
deg/s to the end position and the mechanical disk brake is acti-
vated at the same time. In case of grid failure the pitch power
comes automatically from the buffer battery

The emergency stop (high-level): the blades are driven with
a certain pitch speed program. The mechanical brakes are
used at the same time. In case of grid failure the pitch power
comes automatically from the buffer battery.

Each blade is equipped with a back-up battery. If one of the blade pitches
fails, the synchronisation is turned off and each blade is driven separately
to the storm position. In case of grid failure using the battery power shall be
used.

The system meets the standards of Germanischer Lloyd.

6.5. Glassfiber cover

Nacelle and hub cover are made of glassfiber sandwich. The colour is RAL
7035 grey.

6.6. Yaw system

The wind vane on the roof of the drive train continuously monitors the direc-
tion of the wind. The wind vane is equipped with an anti-icing system. When
the direction of the wind changes, six geared yaw motors on top of the
tower (at the yaw bearing level) turn the nacelle. The hydraulic brakes are
loosened automatically to a reduced pressure for the time of yawing.

Detailed Technical-specification WWD-3 ver 1.5.doc