Analysis and modeling challenges induced by a growing penetration of inverter-interfaced der

The anticipated growing penetration of inverter-interfaced DER affects several aspects of power system analysis ranging from the impact on the system behavior to the modeling and simulation needs of the new technologies. The adequate representation and assessment of the role of the self-commutated converters is addressed through a number of challenges illustrated by a set of examples dealing with system integration of DER, islanded operation of self-commutated converters and modeling and simulation requirements. A generic model of self-commutated converter is proposed allowing their representation in phasor-type simulation programs