Abstract
A small island power system, such as that of Mauritius, has, by definition, a low inertial response, making it highly sensitive to network disturbances, occasioned, for instance, by the loss of generating units or sudden increases of demand. This is why, the integration of intermittent renewable energy is a major challenge, which the Central Electricity Board (CEB) is facing in its effort to reduce fossil fuel in its energy mix, Synchronous generators contributing to the overall system inertia will be replaced by renewable energy with a resultant increased exposure to grid frequency instability. Moreover, short circuit levels will be eroded by the new trend, introducing new complications to protection coordination. Solutions for satisfactory regulation are battery storage, drop mode operation of residue synchronous generators and the enforcement of output forecasts in RE contracts. New impedance values will influence short circuit currents. As a result, new modern smarter protection technologies will be necessary.
Published Version
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