wwd-3 3 mw wind turbine - Ветроенергиен Парк Мургаш |...

1(27)

Document WWD-1003 Prep. by EKU

Checked by GBö Ver 1.5 WWD-3 DETAILED TECHNICAL SPECIFICATION

Appr. by

Detailed Technical-specification WWD-3 ver 1.5.doc

WWD-3 3 MW wind turbine

Detailed technical specification

2(27)



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.

3(27)



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

4(27)



Appr. by


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.

5(27)



Appr. by


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

6(27)



Appr. by


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

7(27)



Appr. by


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

8(27)



Appr. by


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).

WWD-3 Technical specification 9 (27)


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.



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.



6.7. Foundation

The foundation is a gravity-based or pile foundation depending on the local ground conditions. The tower is connected to the foundation by a cylindrical bolted flange.

6.8. Grid connection

The main transformer in the nacelle is manufactured to meet the nominal voltage of the interconnection grid. The transformer has adjustable winding taps ±2x2,5% and the voltage of the high voltage grid must be within ±5% of nominal voltage. Frequency variations within ±3 Hz (50 Hz) can be han-dled. Intermittent or rapid grid frequency fluctuations may cause damage to the turbine. For the fatigue loads, 400 grid failures within the turbines life-time have been assumed.

6.8.1. Transformer technical specification

Note Rated power of wind turbine

3000 kW on medium voltage side

Voltage 10…33 ± 2x2,5% / 0,690 kV

Primary / secondary

Phases 3 Connection Dyn11 Delta/star zk 6 % Frequency 50 Hz Power factor ±0,95…1,00 Transformer HV-side Transformer type Silicon oil-transformer

for converter supply

Power losses Po ≤ 3 kW Pk ≤ 25 kW

full load, 75ºC reference

Static shield Yes Between primary and secondary

Ambient -30 … +40ºC 5 … 95 %

Temperature Humidity

Protections and measurements in-cluded to the trans-former delivery

Oil overpressure Oil temperature Oil level

Type of frequency converter

Active IGBT input bridge,



active IGBT output bridge, Voltage = 690V fsw = 3,6 kHz LC-filter between con-verter and transformer

Total Harmonic Dis-tortion

THD = 5 % (voltage) THD = 5 % (current)

Between LC-filter and trans-former

Vibration The transformer will be installed to the nacelle and good mechanical design against vibration is required.

Cooling of transformer KNAN



6.8.2. Switchgear, Electrical Characteristics The medium voltage switchgear of the grid connection is located in the tower base. The SF6 insulated switchgear consists of switch-disconnector(s) and a transformer feeder circuit breaker. The switch-disconnector has 3 sta-ble positions: closed, open and earthed. The switchgear is designed so that the simultaneous closing of the switch or circuit breaker and the earthing switch is impossible. The specification of the turbine switchgear is shown in the table below. As an option are the following devices for the switchgear available: voltage indicator lamps, fast earthing switch (arc killer), manometer and raising plinth.

Rated voltage (kV) 12 24 36 Network switch disconnec-tor

Rated current (A) 630 630 630 Breaking capacity (A no load cable)

30 30 25

Making capacity (kApeak) 52,5 40 50 Short-time withstand current (kArms 1 s)

21 16 20

Insulation level (50Hz 1 min kVrms)

28 50 70

Impulse voltage (kVpeak 1,2/50 µs)

75 125 170

Cable connection bushing type C 630A, disconnectable M16

type C 630A, disconnectable M16

please consult Winwind

Transformer feeder circuit breaker

Rated current (A) 200 200 630 Breaking capacity (kApeak) 21 16 20 Making capacity (kApeak) 52,5 40 50 Insulation level (50Hz 1 min kVrms)

28 50 70

Impulse voltage (kVpeak 1,2/50 µs)

75 125 170

Cable connection bushing type C 630A, disconnectable M16

type C 630A, disconnectable M16

Please consult Winwind



Current, voltage and energy measurement unit can be located in tower base if needed. The measurement unit specification is shown in table X.

Table X. Measurement unit specification. Rated voltage (kV) 12 24 36 Insulation air air SF6 Current transformers (A)

200-100/5/5 class 0,2s

200-100/5/5 class 0,2s

50-100/5/5 class 0,5

Voltage transformers (kV)

10:√3/0,1:√3/0,1:3 class 0,2

20:√3/0,1:√3/0,1:3 class 0,2

30:√3/0,1:√3/0,1:3 class 0,5

Typical grid connection of WWD-3 wind turbine is shown in figure X. The number of the switch-disconnectors depends on the supply grid type and the number of the turbines in wind farm.

Typical grid connection of WWD-3 wind turbine.



6.8.3 Frequency converter

A liquid cooled IGBT frequency converter is used for connecting the vari-able speed generator to the grid. The frequency converter consists of two parallel connected converters (2x1,5MW) in separate cabinets resulting a robust and redundant system. The voltage level of converter grid side is 690V and the grid synchronization is automatic. The power factor of gen-erator and grid side converters is adjustable. The communication between operation control computer and the converter is made by CANopen field-bus. Due the effective grid side filters, the total harmonic distorsion of the grid side current is low (THD < 4%).

6.8.4 Reactive power control

The reactive power of WWD-3 turbine can be adjusted by the frequency converter. It is possible to control the grid side reactive power by following ways Power factor = 1,0 (default) Power factor < 1,0 according to max reactive power diagram. (Note that the diagram shows the maximum value and lower reactive power production can be agreed). The turbine is able to operate with a power factor of cosφ=0,95 (ind) to cosφ=0,95 (cap) with the nominal power. With partial loads the maximum reactive power diagram is shown in figure X. Note that if a power factor < 1,0 is used, then the power curve and energy yield is lower as specified.



WWD-3 Max reactive power

-2500

-2000

-1500

-1000

-500

0

500

1000

1500

2000

2500

0 500 1000 1500 2000 2500 3000 3500

P (kW)

Q (kVar)

Maximum reactive power of WWD-3 turbine on grid side at the network connection point.



6.9. Turbine control, remote monitoring and reporting

Each turbine has its own PLC, all the PLC’s of the same park are con-nected into network. See picture below.

VPN

VPN VPN

Production data-actual data-cumulative data

WinWinD Web-server

Customers has an access to information of WinWinD web-server thorugh internet

Production data Alarms and turbine control

Remote access for WinWinD personnel to control the turbine

TCP/IP Industrial busFiberoptic cables

TurbinePLC

TurbinePLC

TurbinePLC

TurbinePLC

VPN

VPN VPN

Production data-actual data-cumulative data

WinWinD Web-server

Customers has an access to information of WinWinD web-server thorugh internet

Production data Alarms and turbine control

Remote access for WinWinD personnel to control the turbine

TCP/IP Industrial busFiberoptic cables

TurbinePLCTurbinePLC






Data connection to the park can be made using broadband access, an ISDN connection, an analogue telephone line or a GSM connection. The most recommended method is broadband. The production data is automatically retrieved from the wind turbine PLC to the WinWinD Web-server. From the Web-server data can be made avail-able to customers. The turbine control software contains several state-of-art features, which al-lows optimisation of the production based on needs of the customer, for ex-ample production optimised or noise optimised power curves, etc. Wind turbines can be fully remote controlled, i.e. all the main functions can be executed remotely.

6.10. Presenting the production data on the Internet The system enables presenting the production data of the wind turbines on the Internet. Access to the data can be free or a username with password can be used. Thus the production data can be viewed regardless of the place or time; the Internet-connection, however, is a necessity.

6.11. Alarms

In case of a malfunction the system alarms and informs to the WinCare personnel of the reason for failure. Wincare personnel takes remote control to turbine and start find solution in order to restart the turbine.



6.12. Self-diagnosis of the wind turbine

The wind turbine is equipped with an automatic monitoring system, which continuously protects and controls the generator and the grid and adjusts the settings according to the wind and weather conditions. This way the power production can be optimised. During the cold season the sensors measure the need for heating of the power unit and lubrication oil and en-sure a safe start. For case of a grid drop the wind turbine has an uninterruptible power sys-tem (UPS), which ensures the control for 60 minutes. The anemometer and wind vane of the wind turbine monitor the changes in the wind and the technique starts and stops the plant according to the set-tings.

6.13. Condition monitoring

The mechanical reliability of the wind turbine is ensured with a condition monitoring system. E.g. vibration and temperature is measured by using sensors. Condition monitoring system analyses the data received from the sensors and gives a warning to the turbine controller if alarm limits are ex-ceeded. Condition monitoring system provides trends, frequency spec-trums, time domain signals as well as technical details of the wind turbine to enable accurate analysis of possible faults.

6.14. Lightning protection

The most advanced lightning protection technology in the field is used. The following principles are applied

• Lightning conductor in each blade • Optional registration cards • Varistors and fuses in the terminal box of the generator • Varistors and fuses on the connectors of the inverter • Shielded sensor cables • Overvoltage protection on the high voltage side of the transformer (option)

• Earthing of the tower according to the VDE 0185 standard • The function of the varistors and their fuses is supervised by the con-trol computer



7. Earthing system

The earthing system of WWD-3 turbine consists of a ring type earthing electrode around the foundation in the soil and connection wires from the ring to the flange of the tubular tower. The main earthing bus-bar is also connected to the flange of the tower and the earth termination shall have a resistance ≤ 10 Ω. The 50mm2 copper electrode is used as a electrode wire and the electrode joints in the soil shall be weld joined to get permanent and low-resistance connections. The earthing system must be designed for local soil conditions and if the resistance of 10 Ω can’t be met with ring type electrode, then ground rods must be added to the earthing system. The star point of the main transformer is earthed, which means that the tur-bine main circuit is a TN-system.

8. Options

8.1. Anti-icing of blades

Ice sensors or an anti-icing equipment of the blades is available as an op-tion.

8.2. Aviation lights

The following aviation light options are available:

1. Low intensity. Red 10-200 cd. 2. Medium intensity. Red/white/dual 200-2000 cd. 3. Medium intensity. Red/white/dual 2000-20000 cd.

The options are designed according to the ICAO and the FAA codes. When installed in a wind farm, the obstruction light flashes can be synchro-nised throughout the whole wind farm.

8.3. Service Lift inside the Tower

The turbine can be delivered with a man-carrying service lift inside the tower.



8.4. High voltage switchgear

The high voltage switchgear can be delivered as well.

9. Type Approvals

The Design Assessment is the equivalent to the German Typenprüfung. It is a certification of the basic documents of the machine, stating that the safety philosophy is correct, all safety devices and machine components are correctly dimensioned and the machine has the calculated lifetime of 20 years. The WWD3 is being assessed by Germanischer Lloyd (GL). The design assessment is valid for the machine head (Rotor and Nacelle). The tower will be certified separately, because it is often designed site-specific. Winwind performs the tower certifications through TÜV Tech-nischer Überwachungs Verein. CE – Certificate of Conformity

98/37/EC Machinery 73/23/EEC Low voltage 89/336/EC Electromagnetic compatibility SFS-EN ISO 12100-1:2003 Safety of Machinery. Part 1: Basic concepts, general principles for design. Basic terminology and methodology



10. Transportation dimensions Please refer document “WWD-3 transportation dimensions, access roads and platforms”

11. Access roads and platforms Please refer document “WWD-3 transportation dimensions, access roads and platforms”

12. General Reservations, Notes and Disclaimers

• All data are valid at sea level (1,225 kg/m3). • Periodic operational disturbances and generator power de-rating may be caused by a combination of high winds, low voltage or high temperature.

• WinWinD recommends that the electrical grid is as close to nominal as possible with little variation in frequency.

• A certain time allowance for turbine warm-up must be expected fol-lowing a grid dropout and/or periods of very low ambient tempera-ture.

• All listed start/stop parameters (e. g. wind speeds and temperatures) are equipped with hysteresis control. This can, in certain borderline situations, result in turbine stops even though the ambient conditions are within the listed operation parameters.



13.

General drawings

N.B,

Site drawings are always site specific



N.B, Site drawings are always site spesific



Electrical drawings are always site specific

wwd-3 3 mw wind turbine - Ветроенергиен Парк Мургаш |...

Documents