Frequency Dynamics in the Romanian Power System under Large Perturbations

This paper aims to analyze the frequency behavior of the Romanian power system under various severe operating conditions. These conditions are referring to large unbalances of active power, sudden and slow, and short circuits. Our analysis includes results from PMU measurements that have been performed by Romanian TSO Transelectrica S.A. using the wide area measurement system (WAMS) implemented in the Romanian Transmission Network (RTN) and by the MicroDERlab group from University Politehnica of Bucharest.