《Dynamic Performance of Average-Value Models for Multi-terminal VSC-HVDC Systems》.pdf

1 Dynamic Performance of Average-Value Models for Multi-terminal VSC-HVDC Systems Jaime Peralta, Student Member, IEEE, Hani Saad , Sébastien Dennetière, Member, IEEE , and Jean Mahseredjian, Senior Member, IEEE DC power transmission are: two-level, multilevel neutral- Abstract—Voltage Source Converter (VSC) HVDC point diode-clamped (NPC) and multilevel floating capacitor. technologies present a bright opportunity in a variety of fields Advantages and disadvantages of these converter topologies within the power system industry due to their recognized can be found in [7]. Recent trends on multilevel converters advantages in comparison to conventional line-commutated for HVDC include the modular multilevel converter (MMC) HVDC systems. Computational burden introduced by detailed topology which connects two-level converter modules in modeling of VSC-HVDC systems in EMT-type programs cascade to achieve the desired ac voltage [8], [9]. complicates the study of transient events. Detailed modeling includes the representation of semiconductor switches and Detailed representation of VSC-HVDC systems in EMT- causes significant deterioration in computational s