MODELING OF RELIABILITY PARAMETERS OF POWER SUPPLY SYSTEMS WHEN CHANGING TECHNICAL PARAMETERS

The relevance of the study lies in the assessment and forecasting of the reliability parameters of power supply systems of enterprises (with transformer substations with a voltage of 10/0.4 kV) under conditions of changes in their technical parameters. A method for modeling power supply circuits in the Matlab / Simulink environment is proposed. It allows visualizing processes in the system, investigating the main reliability indicators (such as the circuit failure flow parameter (ω), mean time between failures (MTBF), probabilities of failure-free operation (P), and the probability of failure (Q). A model has been developed for a typical power supply circuit. Computational experiments have been conducted demonstrating the adequacy of the model calculations for the resulting reliability indicators for various circuit configurations. It is shown that this approach provides designers and researchers with the opportunity to carry out fast calculations to optimize the reliability of designed and operated power supply systems (PSS) at the design and operation stages. The research uses the fundamentals of reliability theory and probability theory. The developed model in the Matlab / Simulink environment makes it possible to determine the reliability indicators of power supply circuits (ω, MTBF, P and Q) when changing the technical parameters of the circuit. The conducted This study aims to address the pressing issue of improving the efficiency of assessing and managing the reliability of power supply systems. The paper proposes and implements an approach based on modeling in the Matlab/Simulink environment. These findings can be recommended for use in the design of power supply systems. Implementation of the developed model in design and operational work will significantly improve the reliability of power supply to consumers and ensure more efficient use of resources during operation.

power supply system, reliability, reliability assessment model, reliability parameter modeling, Matlab, Simulink, loop circuit, redundancy.

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2026-08-24