Methods for Assessing the Fault Tolerance of Electrical Equipment at Levels of Power Supply Systems

The construction of a power supply system and its further expansion has been and remains an important step in the development of the industrial component of any country. For this purpose, many methods have been developed for selecting the optimal composition of equipment based on the reliability indicator. It should be noted that considering the functioning of any system of an industrial enterprise in isolation from the operation of other systems does not allow the use of the whole range of measures aimed at increasing the failure-free level of its reliability. Therefore, the reliability of the power supply system should be carried out taking into account the interaction of its electrical equipment with the equipment of other systems. The paper compares the methods for determining the reliability and justifies the relevance of the proposed approach to the analysis of systems, as well as the need to take into account the characteristics of automatic control systems.