Wind turbine optimiser ROMO Wind is to equip all eight Vestas V90 turbines in the Kittlitz II wind farm with its iSpin spinner anemometer. The patented ultrasonic wind measurement at the tip of the hub detects all relevant wind data directly in front of the rotor. Repartner Wind, owner of the wind farm in Brandenburg, Germany, seeks information on yield capacity, loads and turbulence intensities before and after the installation of six turbines over 130 metres high nearby in the main wind direction.
How do newly erected wind turbines influence directly neighbouring turbines, how do changes in the park layout affect the performance capacity and loads of existing turbines? These questions concern all wind farm operators affected by new turbines in the immediate surrounding area. Markus Romberg, Managing Director of Repartner Wind GmbH, wants to know how the eight Vestas V90 turbines at the Kittlitz II wind farm will react when, from October 2019, six significantly higher Vestas turbines will be installed in the main wind direction – three V126 and three V136 turbines, all with tower heights of over 130 metres, the nearest only 700 metres away.
Untill now, there has been no reliable information on how wind turbines with rotor diameters of more than 120 metres and tower heights of more than 130 metres interact and behave with existing turbines at short distances.
“We need a reliable, permanent measurement of the actual turbulence intensities before and after the new installations. So far, only iSpin technology has been able to do this. With the measurement data, we can recognise the wake characteristics of neighbouring turbines, avoid unnecessary sector shutdowns and ensure that the turbines continue to operate within the turbulence assessments and the applicable standards“, says Romberg, who already knows the iSpin system. “We’ve already used iSpin in other wind farms and achieved higher yields by correcting nacelle misalignments and increasing running smoothness. Since the iSpin data also includes flow inclination, free wind speed in all sectors and manufacturer-independent power curve, we minimise cost risks during continued operation after 20 years”, Romberg continues.
