An Implementation of Enhanced Power Sharing Scheme for Islanded Microgrid using VPI Controller
نویسندگان
چکیده
This project deals with the application of distribution generation with energy storage system connected to the low– voltage microgrid by coupling inverter for simultaneous energy management and other aucillary services that include the compensation of power quality disturbances. To address inaccurate power sharing problems in autonomous islanding microgrid, an enhanced droop control method through online virtual impedance adjustment is proposed. First, a term associated with DG reactive power, imbalance power, or harmonics power is added to the conventional real–power frequency droop control. Vector proportional integral (VPI) control algorithm is presented for storage inverter, which enables storage unit to be charged or discharged according to assumed schedule and to contribute to power quality improvement through the compensation of reactive power, current harmonics and unbalance .The feasibility of the proposed method is verified by simulated (by using MATLAB software) and experimental results from a low–power microgrid prototype
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