Russian Federation
graduate student from 01.01.2022 to 01.01.2025
Ishimbay, Ufa, Russian Federation
UDC 621.313.3
This article examines fire safety issues related to synchronous electric machines used in the power and industrial sectors. The aim of the study is to develop a method for quantitatively assessing the fire risk during operation of synchronous electric machines, taking into account failure statistics and the characteristics of their transition to fire-hazardous conditions. Regulatory documents, reports from EMERCOM of Russia and Rostekhnadzor, as well as scientific publications and media data are analyzed. A classification of fire causes associated with the operation of synchronous electric machines is presented, identifying the dominant fire risk factors, including interturn short circuits, overheating of bearing assemblies, and leaks of cooling and lubricating fluids. Examples of major accidents caused by synchronous electric machine failures are considered, with an assessment of their economic and social consequences. To assess the fire risk, an integral criterion is proposed for identifying pre-emergency conditions. A probabilistic model is developed that takes into account both the failure rate and the conditional probability of their transition to fire. Calculations of the mean time between failures of synchronous electric machines showed that the risk of fire is 1,5–2 %, assuming proper operation of protective systems, confirming the effectiveness of preventive measures. The scientific novelty of this study lies in the development of a probabilistic model for assessing the fire hazard of synchronous electric machines, taking into account both the failure rate and the conditional probability of a failure turning into a fire. The results obtained can be used in fire risk analysis at energy and industrial facilities, as well as in developing measures to improve the fire safety of electrical equipment.
synchronous electric machines, fire safety, failure probability, spectral diagnostics, integral fire hazard criterion, power engineering, industrial safety
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