BEIJING, Feb. 6 (Xinhua) -- Amid the strongest cold wave in recent years, State Grid Hunan Electric Power is making all-out efforts including using homegrown smart wire deicing robots to secure quality power supply around the Spring Festival holiday.
Since the start of February when cold waves triggered "quick freeze" of local transmission towers and wires, the company has dispatched 24 deicing vehicles, 51 sets of main power network deicing devices and 116 distribution line deicing devices for urgent deicing at localities in Hunan.
On February 3 when people were celebrating the Kitchen God Festival in south China, an important distribution line between Yiyang City and Changsha, the provincial capital of Hunan, was covered with ice 8mm thicker than normal winter days within just one day.
"We are planning to employ homegrown fixed DC deicing devices to melt ice covering the distribution line and these devices can complete deicing for over 100km of wires in an hour, ensuring effectively safety of distribution lines," said a worker of the Disaster Prevention and Reduction Center of State Grid Hunan Electric Power.
When enhancing on-site power patrol across the province, the company also adopted the homegrown deicing robots to remove ice covering the distribution lines in Zhangjiajie City on days and at nights recently.
Developed by an innovation studio affiliated to the Electric Power Science Research Institute of State Grid Hunan Electric Power, these deicing robots enabled by visual recognition, wireless control, and integrated vibration and ice crushing technologies are capable of deicing when distribution lines are energized.
Under such circumstances, no power supply suspension is caused for users of related distribution lines in the province and the safety of power workers can be better guaranteed.
Apart from these, the deicing robots can effectively reduce the work of power workers, introduced Yang Miao, an employee of the research institute and after which the innovation studio is named.
Currently, 184 fixed posts, 1,955 mobile posts and 418 online monitoring devices have been put into use to monitor wire ice situations in Hunan and 1,464 emergency repair teams and 19,699 power workers are in place for urgent need. (Edited by Duan Jing with Xinhua Silk Road, duanjing@xinhua.org)
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