Optimal Hybrid AC/DC Microgrid Operation with Multi-Bus DC Sub-Grid

Abstract

In this study, identical distributed generation has been used to preserve the power system's economic operation and incremental cost management. In order to equalise incremental cost, a droop control mechanism based on incremental cost is adopted for synchronising the sub-grid's DC bus voltage & AC bus frequency. This configuration of a hybrid (alternating current/direct current) AC/DC Micro grid (MG)DC sub-grid (SG) is initially designed. Droop technique, however, results in variations in AC bus fervency and dc bus voltages. Second, a suggested and realised distributed fuzzy logic control architecture with incremental cost-based droops allows uncertainly dispersed generations to interact with their neighbour ones, therefore lowering communication weights and improving the performance of the uncertain system. Because the suggested architecture includes a fuzzy logic controller, the transient behaviour of architecture, the system's voltage and frequency exhibit less transient behaviour and quickly achieve steady state. Additionally, all distributed generations' additional costs are equalised. MATLAB/Simulink is a platform that is used to demonstrate the effectiveness of planned control strategies and to validate outcomes.