Modeling of a three-phase underground power cable using the distributed parameters approach

This paper presents a model of the underground shielded cable by using voltage and current electrical measurements available in voltage source. The cable modeling is based on the distributed parameters theory which takes into account both core and sheath. This model is applied to the real case of 150 kV cable posed in trefoil configuration, connecting substations of TYNA, TAPAROURA and SIDIMANSOUR, three urban zones of SFAX city, TUNISIA. In order to validate the developed model, load and unload tests are applied using the software Simulink-SimPowerSystems of Matlab.