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Topological states of substations’ equipment are determined by the states of switching devices. The considered classes of topological states are the states of: individual devices, groups of electrical devices, and substations as a whole. Along with independent significance of these characteristics their role as logical locks when switching is considered. Topological characteristics are calculated by analyzing the topology of electrical circuits and substations. For this, the mathematical formalism has been developed, which is based on the special algebra of graphs. Formulas are given to calculate the topological states of the equipment of substation.

Methods of Automatic Control of the Topological State of the Equipment of Electrical Substations