A model to study the thermal behaviour of a system of directly buried electrical power cables is presented. The model completely describes the conditions of heat transfer at the soil-air interface. In particular, the different incid- ences that the various radiative components have on the evolution of temperature in the system examined are evaluated. The method is applied to the case of a three-phase line placed under a daily cyclic load, based on experimental observations made on a line with cable of similar character- istics. Different evaluations are carried out assuming different characteristics for the soil and the climatic conditions
Effect of Radiative and Convective Heat Transfer on Thermal Transients in Power Cables
BUONANNO, Giorgio;DELL'ISOLA, Marco;
1995-01-01
Abstract
A model to study the thermal behaviour of a system of directly buried electrical power cables is presented. The model completely describes the conditions of heat transfer at the soil-air interface. In particular, the different incid- ences that the various radiative components have on the evolution of temperature in the system examined are evaluated. The method is applied to the case of a three-phase line placed under a daily cyclic load, based on experimental observations made on a line with cable of similar character- istics. Different evaluations are carried out assuming different characteristics for the soil and the climatic conditionsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
