Do mountain waves affect wind farm power output and nacelle wind speed?

When analyzing wind farm power output and nacelle wind speeds, we found that even small oscillations in wind speed caused by mountain waves can induce oscillations between full-rated power of a wind farm and half of the power output, depending on the position of the mountain wave's crests and troughs.

Do mountain waves affect wind power?

The NREL -led study, found that the mountain waves caused large upward and downward surges in power generation from the wind farm. This finding underscores the necessity of accounting for mountain wave impacts in wind power forecasting operations and when choosing wind farm locations and layouts downwind of mountains.

How do mountain waves affect power production?

In this particular case, the oscillations of a few meters per second caused by the mountain waves have dramatic effects on power production. Even after aggregating the power output from all turbines, the power still fluctuates approximately 25 MW from mountain waves at the wind farm.

Are low-speed mountain wind farms stronger than a 1 wind farm?

Moreover, the impacts of the No. 2 and No. 3 low-speed mountain wind farms were significantly stronger than that of the No. 1 wind farm, reflecting the higher precipitation erosion and steeper terrain of the No. 2 and No. 3 wind farms.

What is the spatial pattern of mountain waves in 100 m wind speeds?

From the spatial pattern of mountain waves in the 100 m wind speeds, we extract wind speeds along a latitude of 45.6 ∘ N and calculate the power spectrum using the fast Fourier transform (FFT) (Fig. 9). The spatial pattern of the waves at 50 and 200 m is similar (not shown). At this latitude, most of the WFIP2 sodar sites are located.

How do mountain waves and wakes affect wind turbines?

For example, mountain waves and wakes often occur concurrently, and the signals in time series of wind speed when analyzing observations at a single site or wind turbines can be difficult to distinguish. Mountain wakes impacting wind turbines in the Columbia River basin are mostly created by Mt. Hood.