Stochastic Transient Stability Analysis of Transmission Systems With Inclusion of Energy Storage Devices

The letter provides a thorough stochastic analysis of the impact of energy storage systems on the transient stability of transmission grids. This impact is evaluated considering the combined effect of different energy storage technologies, fault clearing times and network topologies. The latter concerns the relative positions of faults, storage devices and synchronous machines. The case study consists of stochastic time-domain simulations carried out for the all-island, 1,479-bus model of the Irish transmission system that includes a real-world hybrid storage device. Results lead to some non-intuitive conclusions.