Distributed Generation Stability During Fault Conditions

Abstract

The difficulties facing electric utility

companies to satisfy on-site customer power demand

aroused an increasing interest in small distributed

generators (DG). Also the environmental concerns, the

technology evolution and the need to integrate renewable

energy resources into distribution system gave way to the

construction of (DG) using alternative energy sources.

The presence of such new generators creates new

operating conditions for the interconnected system. The

aim of the paper is to study the impacts of faults on

stability in systems with (DG) and their satiability during

faults. In this paper, the impact of different types of faults

at various locations on a distribution system with and

without the presence of (DG) is studied. The IEEE 13

node distribution test feeder is used as a model for the

study together with synchronous generator (DG). The

simulation of the distribution system and the (DG) is

performed using PSCAD software. A comparison

between fault currents with and without the insertion of

the DG is carried. The effect of such faults on the

stability of the used DG is considered taking into account

the control actions expected for the system to remain

within the stability limit.