HVDC line parameters estimation based on line transfer functions frequency analysis

This paper proposes a method to estimate HVDC line parameters. After a reminder on the transfer functions that characterise the dynamic behaviour of a DC line, link between these transfer functions resonance frequencies and the line parameters is established. This link is then used to estimate the line parameters, the resonance frequencies being determined using the power spectral density of voltage signals at the input and output of the line. A numerical example highlights the efficiency of the proposed method.