The DC filter capacitor operates on the DC side of HVDC transmission system and it should withstand DC voltage in long term and absorb the harmonic current. In case of harmonic current passing through metalized film capacitor

the internal temperature in capacitor will rise resulting in speeding up dielectric aging and leading life reduction of capacitor. In this paper

the theoretical calculation and analysis of root-mean-square current carrying capability to a dry-type DC filter capacitor with cylindrical construction are made and the factors affecting current carrying capability of capacitor are also analysed

which can be as a reference to the parameter design of dry-type DC filter capacitor.