ASKA Energy CZ-250 Wind Turbine Specification
Transcription
ASKA Energy CZ-250 Wind Turbine Specification
ASKA Energy CZ-250 Wind Turbine Specification Roger Beecroft ASKA Energy Services September 6, 2012 CONTENTS 1. Introduction .................................................................................................................................................... 3 2. System Protection ........................................................................................................................................... 3 3. Power Curve and Annual Output .................................................................................................................... 4 4. Noise emmissions ........................................................................................................................................... 5 5. General Specification ...................................................................................................................................... 5 5.1. Rotor Assembly ..................................................................................................................................... 5 5.2. Tower..................................................................................................................................................... 5 5.3. Blade ...................................................................................................................................................... 5 5.4. Generator .............................................................................................................................................. 6 5.5. Gearbox ................................................................................................................................................. 6 5.6. Brake Unit .............................................................................................................................................. 6 5.7. Operational Data ................................................................................................................................... 6 5.8. Inverter .................................................................................................................................................. 6 5.9. Elevation ................................................................................................................................................ 7 5.10. Foundation ............................................................................................................................................ 8 1. INTRODUCTION The CZ -250 Vertical Axis Wind Turbine (VAWT)is a natural evolution of the established CZ – 10 50kw range of VAWTs which have been in production since 2007. The VAWT range includes a number of unique patented design features that give them exceptional performance incorporated in a relatively simple design. These include: • A very low start-up speed of just 1.8 m/s and a very low rated wind speed of 7-10 m/s which combined with the patented blade system contribute to a turbine that produces exceptional energy output while being easy to maintain. • The turbines also include a number of remote monitoring features via the Scada link including: o Remote Performance monitoring o Vibration Monitoring o Visual Monitoring via a tower mounted camera In the UK the turbines will be installed by Windtechnics UK Ltd and serviced every three months using a supply of spare parts held at Windtechnics Warrington warehouse. The turbines carry an optional 10 year warranty programme. 2. SYSTEM PROTECTION Voltage Overload Yaw Protection Current Overload Yaw Protection High Wind Speed Yaw Protection High Rotational Speed Yaw Protection Brake System Manual 3. POWER CURVE AND ANNUAL OUTPUT Power curve CZ-250 Annual Output kWh 4. NOISE EMMISSIONS Hub height wind speed [m/s] Total noise level L Aeq,total [dB(A)] Background noise level L Aeq,BG [dB(A)] Margin (L Aeq,total - L Aeq,BG [dB(A)] Apparent sound power level L WA,k [dB(A)] 4 59.3 32.2 27.1 87.3 5 61.2 33.6 27.6 89.2 6 63.2 35.0 28.2 91.2 7 65.1 36.4 28.7 93.1 8 67.0 37.7 29.3 94.9 9 68.9 39.1 29.8 96.8 10 70.7 40.5 30.2 98.7 Test certificates are provided in Appendix A 5. GENERAL SPECIFICATION 5.1. ROTOR ASSEMBLY Diameter; 22m Swept area; 380 sq. m Rotational Speed; 40 RPM Rotational Direction; Clockwise No. of blades; 3 sets of 3 Airbrake; Yaw Protection 5.2. TOWER Material Hot-dip galvanised steel Height 18m Weight 4340kg Bottom Diameter 1100mm Top Diameter 900mm Material; Aircraft aluminum or Reinforced Fibreglass Length; 12m Width; 1000mm Weight; 700kg 5.3. BLADE 11 72.7 41.9 30.8 100.7 5.4. GENERATOR Vertical Permanent Magnetic DC480 Weight; 3000kg 5.5. GEARBOX Planetary Ratio 9:1 5.6. BRAKE UNIT Manual drum brake 5.7. OPERATIONAL DATA Cut-in wind speed; 1.8 m/s Rated wind speed; 10 m/s Cut-off wind speed; 28 m/s Survival wind Speed; 38 m/s 5.8. INVERTER CZ-250 Capacity 250kw Input voltage 480VDC Input voltage range 360V-560V Transfer time ≤ 4ms Automatic transfer Transfer efficiency 87-92% Invert frequency 50Hz or 60Hz Output voltage Four steps AVR, 220V± 3% or 380V± 3% Current 250A Output wave form Pure sine wave Protections Protection against short-circuit, over load, high-voltage, reverse polarity protection and low-voltage protection 5.9. ELEVATION AND PLAN 5.10. FOUNDATION 6. APPENDICES 6.1. APPENDIX A – NOISE CERTIFICATES Noise certificates have been provided as supplied from the Test house in China