ESTIMATION OF RELIABILITY OF ELECTRIC POWER SUPPLY OF LOAD NODES OF STRUCTURALLY COMPLEX RECOVERABLE SYSTEM FACTORING IN TWO TYPES OF INCOMPATIBLE ELECTRICAL EQUIPMENT FAILURES
Purpose. Improvement of an engineering method of calculating the reliability of structurally complex recoverable systems of electric power supply which elements may exist in two exclusive states. Method. The theory of the Markovian random processes with the digital number of states and continuous time has been used in the article to obtain the engineering formulae. Results. The main characteristics of the reliability of its load nodes have been determined for the structurally complex recoverable system of the electric power supply which allows selecting an optimal network map. Scientific novelty. The formulae have been obtained that allows estimating the electric power supply reliability of the load nodes in case when the elements of the network equivalent circuit may exist in three incompatible states. Practical value. The new engineering method for estimating the electric power supply reliability of the load nodes has been obtained factoring in the recovery of the elements and two types of the incompatible failures of electrical equipment: an “open-circuit” failure and a “short-circuit” failure (protection system discharge failure) which allows factoring in the influence of organizational and technical measures on ensuring the reliability of the load nodes.