A Multi-Level Approach to Power System Modelica Models

The increasing presence of renewables in today's power systems leads to more power electronics devices. Therefore, it is becoming critical to integrate analysis and design of power electronics and power systems. This paper presents a multi-level approach to use Modelica models to interface these two domains and to enable experts to work with consistent models and simulation environments. Furthermore, the multi-level approach requires coherent initialization of all levels of the models. To this aim, this paper demonstrated how the results of static phasor simulation can be utilized to automatically generate correct initial conditions for electromagnetic transient simulations that include switching power electronic devices.