Evolution of Temperature Field around Underground Power Cable for Static and Cyclic Heating

Power transmission covering long-distances has shifted from overhead high voltage cables to underground power cable systems due numerous failures under severe weather conditions and electromagnetic pollution. The are limited by the melting point of insulator around conductor, which depends on surrounding soils’ heat transfer capacity or thermal conductivity. In past, numerical theoretical studies have been conducted based mechanistic mass model. However, experimental evidence provided. Therefore, in this study, we performed a series experiments for static cyclic loads with cylindrical heater embedded sand. results suggest charging dry sand natural convection within wet A comparison dry, unsaturated fully saturated is presented graphs colour maps provide valuable information insight an cable. Furthermore, measurements conductivity against density, moisture temperature showing positive nonlinear dependence.