Assessment of Technical Condition and Forecasting of Further Operation of Power Oil-Immersed Transformers

The operation of power oil-immersed transformers inevitably leads to the deterioration of their components. This creates a need for regular diagnostics and monitoring of the technical condition of both the transformers themselves and the associated power plant equipment. Optimizing the maintenance system for power oil-immersed transformers is a complex task, dependent on numerous factors and based on the principles of reliability theory, aging and restoration processes, and technical diagnostic methods. The forecasting of the residual life of a power oil-immersed transformer, implemented in the developed software, is a key factor in decision-making regarding continued operation or the need for repair interventions. The development and enhancement of the system for assessing the technical condition of power transformers enables a comprehensive approach to technical condition assessment, allows for the determination of the limiting state of power transformers with long service lives to make informed decisions on the possibility of their further use or the need for decommissioning, and improves equipment reliability. The refinement and increased effectiveness of the technical condition assessment system for power transformers allows: ensuring a comprehensive approach to analyzing technical condition, establishing the limiting state of power transformers with long service lives to make informed decisions regarding the possibility of their further operation or the expediency of decommissioning, as well as increasing operational reliability. The developed approach to diagnostics and monitoring contributes to more accurate forecasting of the transformer's residual service life, an increase in the time between repairs, enhanced operational reliability, and a reduction in repair and maintenance costs.