The present work aims at proposing an automatic computational methodology to electrical systems operational management in real time via the interruption diagnosis and effect attenuation plan definition by means of system topology determination with load curtailment in load transference capacity exhaustion conditions. The proposed methodology tackles large electrical systems with different voltage levels, such as sub-transmission and distribution systems simultaneously with distributed generators. The Tabu Search is applied to minimize the out-of-service area and the number of switching operations during contingencies with priority customer, load curtailment and distributed generators. The software codification and data structure applied provide computational efficiency, favoring the application to electrical systems operation in real time and the proposed model is validated with test systems from the literature, ensuring the computational efficiency and quality of results.

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