1.NARI Group Coporation (State Grid Electric Power Research Institute), Nanjing 211106, China;2.NARI Technology Development Co., Ltd., Nanjing 211106, China;3.State Grid Lianyungang Power Supply Company, Lianyungang 222042, China;4.State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210024, China

Because there are many types of equipment in the substation, the wiring is complex and each place has its own wiring graph drawing habits, it is difficult to automatically generate high-availability substation wiring graphs that meet users’ drawing habits. A topological analysis method based on the graphic description specification for electric power system CIM/G is proposed, which is used to identify and extract the features of the inventory graphs, to establish the graphic feature database, and to realize the automatic generation of the substation wiring graph by using the graphic features. This paper presents a case of generating a 220 kV substation graph in Lianyungang, Jiangsu Province of China, and verifies the correctness and effectiveness of the automatic generation of substation wiring graph based on the topological analysis of inventory graphs.