Transient Thermal Response of Multiple Power Cables with Temperature Dependent Losses

This paper addresses time-dependent rating calculations for groups of power cables with temperature-dependent losses. It is a continuation of a recent publication [1] the presentation of a new transient calculation method for one cable and offers an extension of the algorithm presented there to the problem of multiple cables subjected to variable loading. Whereas the standards offer simplified solutions for one load step and for equally loaded cables only, the new approximate algorithm is providing a complete analytical solution to this problem. In the following, this will be explained in detail and demonstrated by practical numerical examples.