Paper Title
Coordination of voltage sag and Overcurrent Protection in dg systems
Abstract
The study of a distribution system is
done on a radial system where the causes and
effect of distributed generation (DG) are
determined. The system is an industrial area or a
weak power distribution system. DG presence in
the system depends upon requirements by the load
and as backup. A radial system for the study of
voltage sag and overcurrent on different buses
when connected to a distribution system with DG
is analyzed and with respect to faults. However the
impact of DG units on grid voltage is strongly
dependent on voltage level, grid impedance and
concerned grid. The protection coordination
concept between protective devices located on
different buses in the system is proposed.
Index Terms —Distributed generation, Circuit-
Breaker, power quality, protection coordination,
voltage sag.