Effectivity of active voltage control concepts in distribution grids

Abstract

This paper deals with comparing the effectivity of different active voltage control strategies like cosφ(P), Q(V), on load tap changer(OLTC)-transformers, line voltage regulators (LVR) or STATCOMs for the integration of decentralized energy resources (DER) in distribution grids. All examinations are based on a combined symmetrical three-phase MV/LV-distribution grid simulation model for rural areas. Probabilistic and static load flow calculations take respect to different tasks of supply and paths of DER-penetration. A separated planning of MV and LV grid is considered as well as a common network planning for MV and LV. Results are hosting capacities and efforts for network extension.