The Impact Study of a Statcom on Commutation Failures in an HVDC Inverter Feeding a Weak AC System

The Static Synchronous Compensator (STATCOM) devices are pure power electronics devices that use voltage source,IGBT, IGCT or GTO based converters to generate reactive current. This paper illustrates the effect of STATCOM con-nected whit an HVDC inverter feeding a weak AC network, on the recovery from commutation failures following AC sidedisturbances. MATLAB/SIMULINK simulation results have demonstrated the robust performance of the proposed systembased on the first CIGRE HVDC Benchmark model against commutation failures.´K e y w o r d s: HVDC inverter, Commutation failures, STATCOM