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Power grid simulation models for the energy transformation

An important milestone was reached with the development of simulation models for the interconnected power grid. The network models are modularly structured, completely geographically referenced and contain examples for all voltage levels.

Transmission grid Europepicture: KIT-IAI

Starting with the ENSTO-E transmission grid for the Central Europe (CE) interconnected region, the model parts extend to typical low-voltage distribution grids of residential areas in Karlsruhe. The KIT Campus-Nord as a real-laboratory grid model, as well as the 110 kV grid level of the zones Baden-Württemberg and Schleswig-Holstein were also modeled with high detail.  The models exist in the variants today (2022), according to NEP-2035 and target grid (2045). All simulations allow load flow studies, quasi-dynamic time series calculations, as well as transient-dynamic short-term studies of load changes as RMS or EMT analyses. By combining the models across all voltage levels, a "re-bundling" of the networks is possible, which is not possible for the network operators themselves - due to the EU competition rules on "un-bundling". The network models form an important building block for further HIL and PHIL experiments in the Energy Lab 2.0. In addition, the high-performance computers of the EGSAL laboratory (RTDS and Opal-RT hardware) were coupled with the real laboratories in Jülich (FZJ) and Oldenburg (DLR) to form a distributed real-time simulation.