Unbalanced transformer area management priority ranking method and device

The invention discloses an unbalanced transformer area management priority ranking method and device. The method comprises the steps of selecting transformer area three-phase imbalance related indexes which comprise a single-phase overload index, a voltage out-of-limit index and a current balance degree out-of-limit index; establishing a normal-out-of-limit avalanche model and a scoring mechanism of the related indexes; obtaining historical data of each transformer area in a preset time period, and calculating an unbalance degree score of each transformer area based on the normal-out-of-limit avalanche model and the scoring mechanism of the related indexes; and according to the unbalance degree score of each transformer area, ranking the management priorities of the unbalanced transformer areas. Quantitative evaluation is carried out from the aspects of single-phase overload, unbalance degree, voltage out-of-limit and the like, a power supply company can be effectively guided to carry out emergency classifica