The increasing penetration of renewables is replacing traditional synchronous generation in modern power systems with low-inertia asynchronous converter-interfaced generators (CIGs). This penetration threatens the dynamic stability of the modern power system. To assess the latter, we resort to the critical clearing time (CCT) as a stability index, which is typically computed through a large number of time-domain simulations. This is especially true for CIG-embedded power systems, where the complexity of the model is further increased. To alleviate the computing burden, we developed a trajectory sensitivity-based method for assessing the CCT in power systems with synchronous and asynchronous generators. This allows us to obtain the CCT cost-effectively. The simulation results reveal the excellent performance of the proposed method.
@article{arxiv.2503.12132,
title = {Fast Critical Clearing Time Calculation for Power Systems with Synchronous and Asynchronous Generation},
author = {Xuezao Wang and Yijun Xu and Wei Gu and Kai Liu and Shuai Lu and Mert Korkali and Lamine Mili},
journal= {arXiv preprint arXiv:2503.12132},
year = {2025}
}