Assessment of Distributed Generation Influences on Fuse-Recloser Protection Systems in Radial Distribution Networks

This paper proposes a technique for assessment of distributed generation (DG) influences on radial distribution network fuse-recloser protection coordination and recloser pick up sensitivity. The assessment methods employ the use of sequential algorithms in conjunction with protection system models to determine synchronous machine based DG penetration levels that yield loss of non-DG system protection infrastructure adequacy. The assessment techniques are demonstrated through time-domain simulations on a test system using the PSCAD/EMTDC program.