Event-based under-frequency inertia emulation scheme for severe conditions
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The existing UFLS schemes suggested for conventional power systems need to be reassessed in the presence of renewable energy sources and storage systems equipped with grid-supporting convertors. A new Event-Based Under-Frequency Inertia Emulation (EB-UFIE) plan is proposed in this paper as a substitute of traditional UFLS program to protect the system against the risk of generation trip and subsequent blackout. Trajectory sensitivities are used as a popular technique to predict the future behavior of the system through a mixed integer programming optimization problem. The proposed scheme has been tested on the modified New England 39-bus system including renewables and storages.
CitacióEliassi, M. [et al.]. Event-based under-frequency inertia emulation scheme for severe conditions. A: IEEE International Conference on Renewable Energy Research and Applications. "ICRERA 2018: IEEE 7th International Conference on Renewable Energy Research and Applications: Paris, France: Oct. 14-17, 2018". 2018, p. 1068-1073.