Dynamic phase balancing of three single-phase sections having phase-wise generation and storage in a residential network

A power management strategy for balancing three single-phase sections in a three phase residential microgrids is presented in this paper. The scheme makes use of the previously developed intra- and inter-phase power management techniques to transfer power from the power surplus phase to power deficient ones to achieve dynamic phase balance. This scheme is particularly useful in situations where phase-dependent generation, single-phase loads, and home-based battery storage are involved, such as roof-top PVs, chargers for electric vehicles, and battery storage units. This scheme also opens up potential avenues for accommodating more advanced energy management programs among phases, such as peak shaving in different phases, and load shifting, to minimize potential risks of overloading substation transformers or forced load shedding due to power deficiency in one of the phases. Seven operating scenarios have been identified. Detailed power transfer models are developed and simulated in PSCAD/EMTDC to validate the proposed strategy. Experimental validation has also been carried out on a laboratory-scaled system involving a back-to-back converter.