Germany – Electrical apparatus for switching or protecting electrical circuits – HF-Netzfilter

There is a resonance point in the public grid between the 110/20-kV transformer and the grid connection point of the DyNaLab, which can be excited by the ARUs of the converter systems at the DyNaLab. To suppress this undesirable behaviour or the resonance point, a filter is to be installed that attenuates the harmonics or harmonics generated by the converter on the grid side. The filter to be procured will be coupled to the grid connection point of the Fraunhofer IWES at the DyNaLab site. A similar filter for attenuating harmonic overtones of a grid simulator was already installed in 2018. The filter design must use similar components, so that, among other things, resistors and capacitors are interchangeable between the two systems.