Three-phase unbalanced load control based on load–electricity transfer index

Abstract The three-phase unbalanced load has great influence on the safety and economy of distribution network. Aiming at the status quo, a new control method considering load–electricity​ transfer index proposed in this paper, based on the analysis of three-phase unbalanced control measures. The reference phase sequence is defined, and the load transfer index are proposed. On the basis of load transfer index, considering the conversion relationship between load and electric quantity, the electric quantity transfer index is put forward. Taking electric quantity transfer index to select balanced load and phase sequence, in order to realize the treatment of three-phase imbalance. Taking a real distribution network as an example, the method presented in this paper are simulated. The results show that it performs effective in improving power quality of distribution network.