Modelling of Resistive Type Superconducting Fault Current Limiter for HVDC Grids

The protection of high voltage direct current (HVDC) grids is a challenge considering that the system must detect, locate, and interrupt large fault currents in few milliseconds. Resistive type superconducting limiters (R-SFCL) can help solve difficult task, reducing extremely demanding ratings HVDC circuit breakers. This paper presents different approaches to model R-SFCLs order analyze their suitability for assessing performance grid protection, including step model, exponential RQ magneto-thermal model. In first instance, R-SFCL models are evaluated test parameterisation select most adequate study grids. finally chosen its simplicity but closer behavior magneto thermal terms resistance dependency evolution curve. Then, an conjunction with mechanical breaker multiterminal cases. way, greatly decreased as well requirements. Hence, under enables reliable grid.