Shanghai applies underground line repairing robot for the first time, with efficiency improved by 75%.

The maintenance of the main network line in Shanghai has taken a key step from traditional manual mode to intelligent and precise operation. On February 7, State Grid Shanghai Ultra High Voltage Company used ground line repair robots for the first time at the site of the 500 kV Fensan Line in Nanqiao Town, Fengxian District, successfully eliminating a defect in an old ground line that had been in operation for 34 years with fewer workers and higher efficiency.