For 11 years, State Grid Anhui Extra High Voltage Company has been steadily advancing lean operation and maintenance, guided by the philosophy of "refined management enhancement". Huainan Station has pioneered digital transformation and upgrade, actively advancing "human-machine collaboration", completing an online intelligent inspection system for substations, and working to achieve comprehensive panoramic control and intelligent inspection through a three-dimensional inspection system comprising "high-definition video, online monitoring, inspection robots, drones, and indoor track-mounted robots". Since 2020, Wuhu Station has successively completed the renovation of 14 of 1,000 kV casing pipes, 24 of 1,000 kV GIS circuit breakers, 63 of 1,000 kV GIS knife switches and other major equipment safety hazards in the station, improving the healthy operation level of the first set of AC UHV equipment.