Energy Transmission Loss Minimization Management Strategy for DC Nano-Grid Cluster
Jia Li, Quanming Luo · 2022 4th International Conference on Power and Energy Technology (ICPET) · 2022
Nano-grid (NG) clusters (NGCs) have the potential to act as an essential structure for future low-voltage distribution networks. To address the power loss problem and improve the energy efficiency of the NGC, this paper proposes an energy optimization management strategy based on the cluster loss model. First, according to the basic architecture of NGC, we derive the equivalent circuit model to clarify the power flow relationship among autonomous NGs. Then, the cluster loss model considering the distribution line loss and interconnected converter loss is established. And an energy optimization management strategy is proposed to optimize the energy flow mechanism based on ensuring the balance of energy supply and demand. Finally, to verify the effectiveness of the proposed energy management strategy, a comparative analysis of the loss distribution is carried out under different working conditions. The simulation results show that the proposed strategy can minimize the power loss of the NGC by optimizing the energy sharing between autonomous NGs.