Vestas

Vestas gysanatons 110R5pR 16, 2011 E pagcs V80-2. O MW Versatile megawattage Optimal output Another factor that helps to maximise the efficiency and optimise the sound level of the V80-2. O MW turbine is The OptiSpeed@ generator allows the turbine rotor Speed to Vary between 9 and 19 rpm, depending on conditions. While the technology involved may be advanced, its purpose is simple: to optimise output.

It does this by tapping the higher efficiency of Slow and variable rotation, storing excess energy’ in rotational form and exploiting the full force of transient gusts. All told, OptiSpeed@ boosts annual energy’ production. As an added benefit, OptiSpeed@ also reduces wear and tear on the gearbox, blades and tower on as turbine sound isa ncN.. speeds made possibl v 00 levels. Finally, OptiSp quality power to the or6 ading. Moreover, e the Iower rotation lly reduce sound ine deliver better isation, reduced harmonic distortion and less flicker.

Quite simply, the V80-2. O MW turbine is synonymous with more output, better quality power and less mechanical strain and sound. proven performance Top of Its class The V80-2. MW turbine has been engineered to make the very most of IEC I sites, as it provides unparallelled producti to

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nex: page productivity in both high and moderate winds. More than 2,700 V80 turbines have already been installed around the world, and have proved themselves to be seasoned performers in both onshore and offshore environments.

The high energy’ yield of the V80 turbine makes it an excellent choice for locations where space is limited_ However, it also boasts an excellent track record in challenging offshore conditions, where its high operational vailability, excellent grid compliance and proven technology make it a competitive choice with respect to both cost and performance. One of the factors that contribute to the superior performance of the V80-2. O MW turbine is OptiTip@, its pitch regulation system.

This system features microprocessors that rotate the blades around their longitudlnal axes, thus ensurlng continuous adjustment to maintain optimal blade angles in relation to the prevailing wind. At the same time, OptiTip@ makes it possible to keep sound levels within the limits stipulated by local regulations. Wind power plants require substantial investments, and the process can be very complex. To assist in the evaluation and purchasing process, Vestas has identified three factors that are critical to wind turbine quality: energy production, power quality and sound level.

We spend months testing and documenting these performance areas for all Vestas turbines. When we are finally satisfi documenting these performance areas for all Vestas turbines. When we are finally satisfied, we ask an independent testing organisation to verify the results — a practice we call Proven erformance. At Vestas we do not just talk about quality. We prove it. * Vestas OptiSpeed@ is not available in the USA and Canada.

Technical specifications a598kbjihg76f4e3d21 1 Hub controller 2 Pitch cylinders 3 Blade hub 4 Main shaft 5 Oil cooler 6 Gearbox 7 Mechanical disc brake 8 Service crane 9 VMP-Top controller with converter a Ultrasonic sensors b High voltage transformer c Blade d Blade bearing e Rotor lock system f Hydraulic unit g Machine foundation h Yaw gears i Composite disc coupling j OptiSpeed@ generator k Air cooler for generator Power curve /80-2. MW 2,200 2. 000 1,800 1,600 sound (dB(A)) output (kW) Wind/sound 10 106 102 98 94 90 86 82 78 744540 Speed of revolution (rpm) 35 3025 20 15 1050 31_1f6 at different sound levels for the V80-2. MW turbine, which is equipped with OptiSpeed@. The sound output level can be adjusted by varying the revolutlon Speed of the turbine as illustrated in the figure above. It clearly shows the sound level advantages of Iower speeds of revolution because the sound level is approximately 7 dB(A) Iower at 4 m/s than at 8 mis. For other sound levels, the benefit can be as much s 10 dB(A). Please note that a decrease of 3 d3(A) represents a halving of the sound level. Wind 30 25 Rotor Diameter: Area swept: Nominal revolutions: Operational interval: Number of blades: Power regulation: 80 m 5,027 m2 16. rpm 9-19 rpm 3 Pitch/OptiSpeedO Full blade pitch by three separate hydraulic pitch cylinders. Speed (m/s) 20 15 10 Time Ar brake: Tower Pitch 30 Control Type: Microprocessor-based monitoring of all the turbine functions with the option of remote monitoring. Output regulation and optimisation via OptiSpeed@ and OptiTip@ pitch regulation. Output ,500 2,000 Weight Nacelle: Rotor. 67 t 37 t Power (kW) 1 ,500 1,000 500 0 Towers: Hub height: IEC IA 130 t 160 t 205 t IEC IIA 120 t 135 t 190 t 225 t DIBt II 165 t 200 t DIBt III 125 t 199 t 60 m 67 m 78 m 100 m t = metric tonnes.

OptiSpeed@ allows the rotor Speed to vay within a range of approximately 60 per cent in relation to nominal rpm. Thus with OptiSpeed@, the rotor spe y as much as 30 per Sl_1f6 cent above and below sync ed. This minimises both class. The V80 is a pitch-regulated turbine for medium and high winds that features OptiSpeed@ – a variablespeed echnology that allows the rotor Speed to Vary within a range of approximately 50 per cent in relation to nominal rpm.

This means that with OptiSpeed@, the rotor Speed can Vary by as much as 30 per cent above and below synchronous speed. OptiSpeed@ thereby significantly increases productivity and makes it possible to keep sound levels within the limits stipulated by local regulations. This flexibility, enhanced by a variety of tower heights, makes the V80 turbine particularly well suited to a very Wide range of sites, both onshore and offshore. Together with OptiTip@, Our pitch- egulation system, OptiSpeed@ gives the V80 a competitive edge in its megawatt class.

This edge, backed by Vestas’ reputation for dependability, superior project management and service, has made the V80 one of the best-selling turbines in the world. The popularity of the turbine means that we are able to keep production costs – and hence the customer’s cost per kWh – to a minimum. Vestas Wind Systems AIS Alsvej 21 8900 Randers Denrnark Tel. 445 97 30 OO OO Fax 97 30 00 01 vestas@vestas. com www. vestas. com To see a complete list of our sales and service units, visit wvwv. vestas. com 01/08 UK