Day-ahead economic optimization dispatch of Multi-microgrids with single/three phase structure considering unbalance constraint

摘要

With the increasing access number of microgrids in a single district, multiple microgrid gradually form more complex operation mode and control method in the system called Multi-microgrids. Aiming at the PV-ESS Multi-microgrid of higher commercial value, and based on single-three phase Hybrid Multi-microgrids, we propose a day-ahead economic optimization strategy considering fuzzy rectification and unbalance constraint. What's more, we describe the communication infrastructure and information transmission system based on hierarchical classification, making double scroll optimization structure. And the bottom layer makes optimal economy objective for microgrids while the upper layer balance the data optimized of the bottom layer to obtain the tie-line power of microgrids which can be transferred into the final output of batteries. Simulations of the Multi-microgrids platform testify the proposed strategy feasible and that the strategy can reduce the three phase unbalance in system effectively.