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To improve intelligence level of the rural 400V power distribution grid, a new scheme of smart power distribution management is introduced. Smart power distribution cabinets handled by ARM-LINUX based intelligent systems are employed, which have mobile (GPRS/CDMA/3G) networking capability to communicate with the local power dispatch center, so that each cabinet can transfer grid parameters and other information like power pilferage alarms to and receive commands from the dispatch center. A .NET website is used as the management interface, so that dispatchers can manage the whole power distribution process easily. The new scheme can realize smart 400V power distribution management from top to bottom and can greatly improve intelligence level of the rural power grid.