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The autonomous operation of micro-grids is a very promising function in terms of reliability and power quality. The micro-grid is an all-electronic inertia less system and its isolated operation is based on the control of the inverters that connect storage devices and micro-sources of regulated output to the L.V. grid. The inverter control has to ensure the stability of the system following any disturbance...
In this paper, analytical expressions for the calculation of voltage sag magnitude due to faults at every point of a meshed or radial power network are derived. Balanced and unbalanced faults are considered and the effect of power transformers is taken into account. The following methods for stochastic assessment of voltage sag magnitude are compared using these expressions: the method of critical...
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