Definition of a voltage-source converter dc-side admittance and its impact on dc-network stability

Methodology for the analysis of dc‐network resonance‐related instabilities in voltage‐source converter‐based multi‐terminal HVDC systems

“…Note also that the frequency range where re[y i ] < 0 depends on the ac system SCR. Analogous findings can be reviewed in [27].…”

“…Since the focus of this paper is to present a methodology for stability analysis of a dc network, details on derivations of the y i terms are not presented. The VSC system can also be modelled in electromagnetic transient computational tools and, then, the frequency response of the y i can be 'measured' as shown in [27]. Fig.…”