With the rapid development of smart grid technology, energy IoT technology has become a new direction for the development of power grid enterprises. The energy Internet of Things covers the state of perception, information transmission and intelligent processing of the smart grid, and comprehensively improves the depth, breadth and density of information perception of the grid. The construction of smart grid energy IoT is an important development direction under the smart grid. The article analyzes the technology and network security of the smart grid energy Internet of Things. Based on the characteristics of the smart grid energy Internet of Things and the security risks it faces, the full-scenario network security protection technology adapted to the smart grid energy Internet of Things is analyzed. The suitable intelligence is studied from four aspects: perception layer, network layer, platform layer and application layer. The architecture and content of the full-site network security protection system of the grid energy Internet of Things provides ideas and methods for effectively ensuring the network security of grid enterprises.

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