The dynamic simulation is a method that allows to consider transient, non-linear effects and controller design. The TransiEnt Library, developed and established at Hamburg University of Technology (TUHH), offers such a toolbox. Previous versions of the library worked with limited electrical models. In this paper, the extension of the TransiEnt Library with new models, that allow to consider stability effects of the electric grid, is described. To do so, features from Modelica® and its specification are used to create an advanced framework for the electrical part of IES. As a result, IES with interconnected electric grids can be modeled and simulated more precisely.
Keywords: Integrated Energy System, Electric Energy System, Load Flow Calculation, Frequency Stability, Voltage Stability, Renewable Energy