Study of Coordination between Protective Devices Comprising Distributed Generation in Distribution System

Abstract

This paper proposes to study the coordination of protective devices when 8 MW synchronous generators are interconnected to distribution System of PEA.The coordination between recloser and drop out fuse is investigated in this paper.The three-phase fault is simulated using digital simulation and electrical network calculation program (DIgSILENT).The results are shown that the short circuit current from substation is reduced comparing to the distribution system without DG connected.It causes to protective device coordination inconsistently, so the maintenance will be delayed more than expected.