Differential Evolution-Based Overcurrent Protection for DC Microgrids

DC microgrids have advantages over AC in terms of system efficiency, cost, and size. However, a well-designed overcurrent protection approach for remains challenge. Recognizing this, this paper presents novel differential evolution (DE) based framework microgrids. First, simplified microgrid model is adopted to provide the analytical basis DE algorithm. The does not sacrifice performance criterion steady-state simulation, which verified through extensive simulation studies. A DE-based scheme then proposed protect microgrid. This method provides an innovative way calculate maximum line current, can be used threshold setting relay coordination time setting. detailed load condition solar irradiance each bus obtained by method. Finally, case studies involving faults at different locations are performed validate strategy’s effectiveness. expandability has been confirmed further seven mesh systems.