Dynamic rating of a service power cable subject to intermittent loading

Abstract

This paper presents a model based method to estimate the internal core temperature of a service power cable subject to intermittent loading. The estimation is then used to control the loading so that the cable can be safely utilized to the limit of its capability. The method considers the temperature dependence of the cable resistance and is insensitive to the variations in the environment. The model is backed by laboratory experiment and the effectiveness of the dynamic rating approach is evaluated by simulation.