A Comparative Study on Frequency-Constrained Unit Commitment Approaches in Island Power Systems
Abstract
The increasing penetration of renewable energy sources reduces rotating inertia and even frequency control capacity, affecting frequency stability. This challenge is significant in ips that already suffer from low inertia and frequency control capacity. This paper presents a comparative study on different fcuc formulations applied to ips. Then, by considering under-frequency load shedding as a significant measure of frequency stability in ips, two indices are presented to fully compare the formulations from system benefits and computational burden perspectives. Simulations conducted on a real Spanish island show that the data-driven corrective fcuc formulation has the most advantages among other formulations.
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