BEIJING, Oct. 28 (Xinhua) -- The feeder automation (FA) technology has been recently tested and put into operation at the 10 kV grid in Mingxi County, Sanming City, in southeast China's Fujian Province, making the county fully covered by a self-healing distribution grid.
The FA technology refers to the use of automatic devices or systems to monitor the operation of distribution network. It allows timely detection and analysis of the technical faults of the distribution line, isolates the fault parts and restores power supply for the rest.
With the FA in operation, the power system can automatically evaluate and isolate by itself according to the signal, and the fault isolation and line power transmission can be completed within one minute or even a few seconds without human aid.
The safe and reliable power supply has long been a challenge for Mingxi County, a developing county in a mountainous area, with a long, complicated power grid and multiple key users. In recent years, the State Grid Mingxi County Power Supply Company has been committed to upgrading smart distribution network and applying digital management to improve the automation level of the grid. The 44 newly-operated FA distribution lines in the county will largely reduce the fixing time of power breakdown and provide users with better experience.
"Self-healing power grid has considerable social value and economic benefits for improving power supply capacity and disaster prevention and reduction," said Wang Weifeng, the safety director of the company, adding that the company will further promote the application of FA technology in more areas.
(Edited by Li Shimeng with Xinhua Silk Road, lishimeng@xinhua.org)
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