By Dominik Geibel, Member of the Electricity Distribution Networks Group, Fraunhofer Institute for Wind Energy and Energy Systems Technology (IWES), Kassel, Germany; Gunter Arnold, Member of the Electricity Distribution Networks Group, Fraunhofer Institute for Wind Energy and Energy Systems Technology (IWES), Kassel, Germany; Thomas Degner, Senior Researcher,
The new German BDEW MV guideline demands static and dynamic functionalities from distributed energy resource (DER) units in order to support network operation and stability. Initial indications show that, in general, photovoltaic (PV) inverters are able to fulfil both the static and the dynamic requirements. Besides the new requirements of the guideline, an extensive certification process for DER units and plants has also been introduced. During initial certification processes, a significant need for PV-specific test procedures and test equipment has been determined. This article describes the developments within this area from the perspective of a measurement institute.
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