ELIMINATING NEGETIVE EFFECT OF INVERTER-BASED DGs ON FUSE-RECLOSER COORDINATION IN DISTRIBUTION SYSTEMS

Abstract

Despite many advantages of distributed generation (DG) sources, they may have negative eflect on theprotection of distribution systems. In distribution system, fuse-recloser protection scheme is designed such that therecloser could operate faster than the fuse to prevent Me buming; but, the presence ofDGs in fault conditions maylead to increasedfuse current and thus faster performance of the fuse than the recloser and lack ofcoordination. In thispaper, effect of DGS on fuse-recloser coordination was studied using analytical relations and simulation. usefulcontrol method was presented for reducing the eflect of DG on fuse-recloser coordination. Accordingly, direction ofDG current was changed by controlling DG reactive power at the fault time, which reduced the fuse current. Results ofthe simulation on IEEE 13-bus system showed that the proposed control method was able to remove the negative efl'ectofDG onflue-recloser coordination.