Method and system for drawing transformer variation entity

The invention provides a method and system for drawing transformer variation entity. The method includes: analyzing the primary device model of power grid, extracting the wiring mode of the transformer, sorting the voltages of the primary devices connected with the transformer; analyzing wiring diagram model of power grid plants and stations to determine the coordinate information of the transformer; generating entities of wiring mode of the transformer according to the coordinate information of the transformer and the wiring mode of the transformer; coloring and displaying the transformer according to the generated entity of wiring mode of the transformer and the sorting result of the voltages of the primary devices connected with the transformer. According to the method provided by the invention, the connection relationship and the type of the transformer are extracted according to the internal wiring diagram characteristics of the primary devices and the plants and stations. After confirming through the co