The optimized data network security system based on 4G system for power grid system

In the paper, an optimized data network security system based on 4G is designed. Abiding by the information system safety theory, the paper follows the methods of systems analysis and overall balance, and raises the principles systematically that by study and analyze the network venture of Power Supply Bureau in the process of informatization. And, according to the No.30 order of The State Economic and Trade Committee, the Power Supply Bureau data network is designed. The project it referred is based on the real requirement and technology practice when rebuilding Supply Bureau network, and bring out the guidance effect for generalizing the new unified operation system, planning the network flat and disposing the network safe policy.