Identification of a HVDC cable model with coupling between core and screen

摘要

This paper deals with the identification of High Voltage Direct Current (HVDC) cables in order to obtain an accurate model. The context of large penetration of renewable energy sources in electric production requires to consider new power grids. Nowadays the HVDC multi-terminal networks are going to develop, and with them, new identification and control problems appear. We propose an output-error method to the parametric estimation of HVDC cable models. A π-model, which takes into account the coupling between core and screen of the cable, is estimated. The approach is tested with simulated noise-free data given by the Wideband cable model developed on EMTP-RV software. The goal is to evaluate if the studied model represents the high-frequency behavior of the cable and the feasibility to estimate the parameters of such a model.