The article proposes a model of an electric power system (EPS), in which the calculation of normal and emergency modes is carried out, possible trajectories of the development of cascade processes of an emergency nature are determined. On the basis of experimental calculations, a tool is proposed to increase the survivability and reduce the risk of the possibility of the occurrence and development of cascade processes in the EPS. This approach allows you to make sound technical and economic

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... sions at the design and development stage of the EPS. In accordance with the results of the study, a technical and economic comparison of the options for increasing the survivability of the EPS was carried out.