Recently,State Grid Zhejiang Electric Power completed the installation and commissioning of 6 sets of hybrid differential protection and self-healing devices in Yucun,Huzhou.This is a microcosm of the company's active construction of a "future rural" green and prosperous new type of electricity distribution network.

As the "nerve endings" of the power grid,the distribution network connects thousands of households in the "last mile",It is extremely important for ensuring and improving people's livelihoods.In recent years,with the rapid development of local social economy,rural users have further increased their requirements for power supply reliability,and reducing power failures is urgent.

There are many mountainous areas in Huzhou. Once a line fault occurs,the arrival time of repair personnel will be long,and the time limit for troubleshooting and power restoration will also be extended. It is urgent to improve the self-healing ability of distribution network faults.

Therefore,State Grid Zhejiang Electric Power relies on digital means,Pilot installation of 6 sets of hybrid differential protection and self-healing devices in the Fanyu Village area,Utilizing features such as 5G low latency and large bandwidth to synchronously collect accurate line operation information,creating a digital intelligent distribution network.

After the use of hybrid differential protection and self-healing devices,in the event of the line fault,State Grid Zhejiang Power will clarify the fault location through the backend system,automatically reduce the fault isolation range,automatically close the power supply switch after fault isolation,quickly restore the non fault section power supply load,and shorten the repair time from hours to seconds. Relying on digital means,not only can it reduce the pressure on grassroots repair personnel,Can greatly improve the reliability of rural power supply.

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