The increasing penetration of power converters at all voltage levels in the electrical power supply system is leading to the increasing influence of control interactions on the overall system stability. The additional stability phenomena associated with this differ significantly from the classic stability phenomena in the interconnected system.
To investigate these stability phenomena, conventional interaction studies have typically been restricted to very limited, isolated grid regions. However, for the secure and rapid integration of renewable energies, even with high proportions of converter-based generation, it is necessary to carry out systemic interaction studies. This requires a comprehensive EMT data set that contains sufficiently accurate models of the relevant equipment and manufacturer models.
The transmission system operators have formulated a consolidated position on the fundamental need for interaction studies and the associated requirements for simulation models and standardized interfaces, which will be required in the future for the safe integration of power converters into the grid.