INVESTIGATING THE PROCESS OF HEAT TRANSFER IN ELECTRICAL CABLES OF POWER TRANSMISSION SYSTEM

Abstract

The electrical cables of the power transmission system always get hot when
current flows through them due to the Joule - Lenz effect. Based on the analysis
of the heat transfer process in the cable and the heat emission process from the
cable surface to the surrounding environment, a mathematical model has been
built to determine the law of temperature distribution in the cable and evaluating
the influence of the environment on the degree of temperature of the cable. The
results obtained are the basis for calculating, designing and checking cables in the
power transmission system to ensure the requirements for the cable’s heat
resistance level.