Distributed load sharing and transmission power loss optimisation for DC microgrids.

A distributed cooperative control paradigm is proposed to handle the load sharing and transmission power loss optimisation‐based optimal power flow (OPF) problems in DC microgrids, which is based on a distributed finite‐time average consensus algorithm and a linear variable weighted summation algorithm. Firstly, an OPF problem is formulated to minimise the global transmission power loss, which is then solved by a novel distributed OPF regulator in secondary control. Furthermore, a distributed OPF considering load sharing controller is proposed in secondary control, which aims to guarantee that the load sharing deviation is limited to the assigned permissible range and the global transmission power loss is reduced to a minimum simultaneously. Compared to existing methods, these two control algorithms are developed in a completely distributed fashion, and the load distribution matrix and conductance matrix of DC microgrids are not needed. The effectiveness of the proposed control methods is verified by simulation results. [ABSTRACT FROM AUTHOR]