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When do wind turbines stop?

When do wind turbines stop?

For example, in a video with hundreds of views, a driver who drives past a wind farm with idle turbines suspects an artificially created power shortage. The wind turbines wouldn’t move because too much electricity was being produced.Pottendorf. Assessment: According to the energy supplier EVN, the reason for the stopped wind turbines in the video was a lack of wind. This is also suggested by weather data for the time mentioned. In addition, there are several reasons why wind turbines can stand still.

Verification: The present video was recorded in a car on the A3 towards Vienna, one kilometer before the Pottendorf exit. According to the driver, the time of recording was November 1, 2022, at 3:33 p.m. The location can be verified via map services, and the wind turbines are also clearly visible.

You can see the Tattendorf wind farm. When asked by APA fact check at the Lower Austrian electricity supplier EVN, a spokesman said that it was assumed that the reason for the idle wind turbines at that time was simply the absence of wind.

In this context, EVN sent the APA fact check a graphic of the available wind power in the Tattendorf area at the time in question. This evaluation of the operating software clearly shows a slump in wind power from around 2:30 p.m. to 3:30 p.m. Weather services show that the wind was generally at low levels that day. No movements caused by wind on trees, bushes, branches or power lines can be observed in the video.

Multiple reasons

In addition to a lack of wind, there are basically several reasons why wind turbines can stand still, according to EVN. This can be the case if the wind turbines are defective or not yet connected to the grid. If ice forms on the rotor blades, the system is switched off. Too strong wind can also be responsible for a standstill for safety reasons.

According to the EVN spokesman, normal maintenance work often only results in reduced performance and movement of the wind turbines. On the other hand, there is a switch-off when repairing damaged components or changing the oil. Due to migratory birds and bats, ornithological reports could also cause the wheels to stop at times.

Wind turbines would never stand still in Lower Austria if, as claimed in the video, there was “too much electricity in the grid,” explained the EVN spokesman. There are also no political guidelines for an artificial power shortage. Theoretically, network operators can disconnect electricity producers such as wind turbines from the network if the stability of the network is at risk. However, this would not have been necessary once in recent years.

Moment Magazin and the Hermann Hofmann Renewable Energies Group have also collected reasons why wind turbines can stand still. Accordingly, the shadow cast on residents can also be a reason.

Source: Nachrichten

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