Development and Validation of Dynamic RMS Models for Power System Analysis

The increasing integration of converter-based renewable energy sources is reducing the inertia of power systems and amplifying transient oscillations following disturbances. As a result, the accuracy of dynamic simulation models of generating units has become essential for reliable assessment of system transient stability. This paper presents a validation procedure for an root-mean-square dynamic model of Unit D of the Zakuˇcac hydropower plant, based on measurements obtained from a phasor measurement unit during and after a real system disturbance. The validation process includes preparation of measurement data, alignment of the static model with steady-state measurements, and detailed tuning of dynamic model parameters. The achieved results demonstrate a high level of agreement between simulated and measured responses. In addition, the paper highlights the importance of standardizing requirements for the submission of simulation models, as accurate modeling of individual generating facilities directly enhances the credibility of system-level analyses and supports secure and stable power system operation under increasing system complexity.