Statistical assessment of the impact of renewable energy sources on transient stability

This paper studies the impact of penetration of Renewable Energy Sources (RES) on the dynamic behavior of large power systems. Statistical analysis of the number of instabilities and the time of occurrence of loss of synchronism in the network was performed following large number of Monte Carlo simulations and considering high degrees of uncertainty. A criterion for instability detection is introduced. Conclusions are drawn with respect to the influence of RES on transient stability, the identification of critical generators and how these generators and their behavior may change for a wide range of RES penetration levels