Abstract
Due to a series of advantages the high voltage direct current (HVDC) transmission system is nowadays a standard technology in the fields of renewable energy, underwater or bulk power transmission or for stabilizing the high voltage alternating current (HVAC) grid. With very few exceptions all the existing HVDC corridors are build in a point-to-point configuration (i.e. one inverter and one rectifier) providing no network redundancy in case of line failure. For this reason, a future interconnection of different HVDC corridors is envisioned. One of the challenges raised by this approach is represented by the network switching process under normal or failure conditions. The aim of the current paper is to offer an overview of the existing technologies used for switching in HVDC networks and to provide an analysis of the switching process using the passive resonance principle.
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