The situation of three load unbalance at low voltage side of power system is frequently occurred due to the difference low voltage load.In view of this issue

a self-decision solution using intelligent commutation switches is proposed in this paper.Firstly

the topological structure

operation mode and control method of the solid-state intelligent commutation switch are designed.Secondly

the intelligent commutation monitoring system of the low-voltage distribution network is completed.Finally

the Matiab simulation is carried out and the low-voltage distribution network system model is established.It is shown by the simulation result that the proposed self-decision scheme is feasible in solving the three-phase load imbalance

improving the low voltage and power supply quality.