Dynamic Rating of Three-Core XLPE Submarine Cables Considering the Impact of Renewable Power Generation

Abstract

This paper discusses how to determine the most suitable high voltage alternating current (HVAC) submarine cable in the design phase of new projects. A thermal ladder network method (LNM) is used to analyse the thermal behaviour in the centre of the conductor as the hottest spot of the cable. Based on an approved static cable rating method and thermal cable analysis of transient conditions, applied by a step function with transient time duration greater than one hour, this paper proposes a method for a dynamic rating of submarine cables. The dynamic rating accomplished through an iterative process. The method is tested with MATLAB simulation and validated in comparison to a finite element method (FEM) based approach with high accuracy.