Abstract:regional power grid development initial stage because the automatic control device is not perfect, after an accident in the main power grid network and solution of isolated network operation to the stable operation of the research to have the extremely vital significance, the extreme operating mode from the isolated nature of primary frequency modulation, generator set, OPC set, high frequency low frequency reduction of cutting machine loading device with safety device, several aspects of combinative Shihezi electrified wire netting is“7·26”accident and local power device fixed value setting for the regional power grid and grid security settings to provide reference for enterprises.