Integration of Dynamic Equivalents in Hypersim Power System Simulator

Abstract

A method of calculation of dynamic equivalents for simulation of large power systems has been developed and integrated in Hypersim power system simulator. The calculation of dynamic equivalent is performed by a Matlab program. It starts with the partitioning of the power system in groups of coherent generators using a coherency-based technique. Each coherent group is then aggregated to an equivalent generator and load buses are eliminated. The grouping algorithm is based on the structure preservation of detailed models of generators and their control. The integration of the dynamic equivalents calculation and Hypersim consists of interfacing these two tools via the generated EMTP file since Hypersim can export-import this format. Simulations tests applied to both full and reduced 10 machines, 39 bus power system confirm the validation of the calculation of dynamic equivalents and the integration procedure.