Co-Simulation elektrischer Energiesysteme mit kommerziellen Programmsystemen: Architektur, Methodik und Anwendungen

Description

This work describes the development, implementation, and validation of universal coupling methods for various power system simulation tools. The goal is to establish co-simulation as a widely applicable tool that delivers reliable results and promotes everyday use. Emphasis is placed on the precision and numerical stability of the methods while ensuring their universal applicability in common power system analysis tools. Initially, the current capabilities and possibilities of power system analysis methods are briefly explained. Steady-state techniques like power flow analysis are used mainly for parameter initialization. Phasor-based methods (RMS simulation) and instantaneous value-based methods (EMT analysis) are introduced, highlighting their strengths and weaknesses. RMS methods are typically used for large grids with larger time steps, while EMT simulations analyze small grids in broad frequency ranges with smaller time steps. Coupling these methods using co-simulation aims to overcome these limitations. A shared memory-based algorithm enables data exchange between programs using standardized interfaces while minimizing computation time impact. The integration of values is achieved using electrical equivalents like ideal transformer models or Norton and Thévenin network equivalents. Transformations, correction, and filter methods are implemented and analyzed. To demonstrate the usability, precision, and performance of co-simulation, progressively complex models are built and simulations conducted. The work shows that co-simulation is an effective solution for better utilization of limited simulation resources. Standard simulation tools support this method by providing standardized interfaces.