Minimizing the impact of distributed generation on distribution protection system by solid state fault current limiter

Connection of new distributed generation (DG) to the existing distribution network increases the fault current and disturbs the existing distribution protection system. In this paper a solid state fault current limiter (SSFCL) application is proposed to minimize the effect of the DG on the distribution protection system in a radial system during a fault. The protection problems at distributed generation presence are studied in detail to determine the effectiveness of the SSFCL for the proposed application. The effectiveness of propose SSFCL in protection problems mitigation is determined and examined in the test system. Simulation is accomplished in PSCAD/EMTDC. The proposed method is fully validated on test system.