To realise the installation targets of 10 GW electrolysis capacity in Germany and 40 GW in the EU until 2030, extensive standardisation and testing is required. The electrical characteristics of electrolysers need to be fully understood and mastered for a reliable operation within distribution grids and decoupled grids of systems to produce green hydrogen, e.g. off-shore. Using a modular test infrastructure and multi-functional test pads, electrolysers, but also fuel cells and CHP units, can be tested in emulated grid conditions. To emphasize the range of feasibility regarding testing, three different scenarios were developed, covering the challenges between single unit grid connection and offshore hydrogen production. The test results serve as input for standardisation committees to expand existing and develop new guidelines.

No abstract

In this paper an aerodynamic measurement system is presented that can be installed as a retrofit on virtually any onshore turbine. The aerodynamic measurement system consists of pressure sensors embedded in thin glass-fiber shells, which are glued to the rotor blades. Additionally, an aerodynamic probe is attached to outboard side the shells with a thin flange. In this study the system was installed on an 8 MW offshore prototype turbine located in Bremerhaven. It was mounted at two sections of one of the rotor blades with 72 pressure sensors in total (18 sensors each on the pressure side and suction side, respectively). Additionally, at each section an aerodynamic probe with 5 sensors was installed in front of the leading edge to measure inflow speed and direction. Results were compared to CFD simulations.

No abstract