Reduction method of outlet voltage of transformer with unbalanced three-phase load

In order to overcome the high volatility caused by single-phase voltage curve and improve the accuracy of judging whether the two substation areas belong to the same 10 kV line. The reduction method of outlet voltage of transformer with unbalanced three-phase load is proposed in this paper. Simulation models have also been built to calculate the outlet voltage of transformer. The results of simulation and reduction method have been compared. Results show that the results of reduction method are consistent with the simulation results. Although there exist differences between simulation and reduction method, but the differences are tolerable. It also can be concluded that the reduction method proposed in this paper has good adaptability.