STUDY OF THE PARAMETERS OF TEMPERATURE REGIMES OF CABLE LINES OF POWER SUPPLY SYSTEMS WITH VOLTAGES OF 6-10 AND 0.4 KV

The paper discusses the importance of controlling the temperature conditions of cable lines in power supply systems with voltages of 6–10 and 0.4 kV, and examines the temperature conditions of cable lines in power supply systems as a key factor in the reliability and durability of the power infrastructure. It provides a detailed review of the permissible temperature limits for cables with different types of insulation (paper, polymer, cross-linked polyethylene), as well as the impact of operating conditions, including load, load factor, laying method, and environmental parameters. Special attention is paid to modern temperature control methods: contact and non-contact measurements, thermal imaging diagnostics, mathematical modeling, and monitoring systems. The paper presents calculations of the thermal characteristics of cables of different brands and cross-sections under various operating conditions, performed using regulatory documents (GOST, PUE) and software packages (ANSYS, COMSOL, ELCUT). It has been established that critical overheating is most pronounced when aluminium cables are laid underground in protective pipes, which accelerates insulation ageing and reduces service life by 15–20%. The results obtained can be applied in the design and operation of cable networks to improve energy efficiency, prevent emergencies and increase the service life of equipment.

cable lines, temperature conditions, model, operation, reliability, efficiency.

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2026-03-31