Generating electricity from wind power is better for the environment, but it‘s often a risk factor for electricity grids. When generating power in this way, harmonic currents often occur which disrupt the power quality within the grid. If plants frequently exceed the prescribed limit values in this regard, they have to be removed from the grid. In the worst cases, they may even lose their operating licence. For this wind farm operator in the south of Germany, these concerns are a thing of the past. The small concrete blocks at the feet of the wind turbines each contain a high-frequency filter system from MR, which ensures disruption-free power networks at frequencies up to 9 kilohertz. Until recently this was only possible at frequencies up to 2.5 kilohertz.
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