Security technologies in 4G network for power grid

4G technologies with high data rate is flexible and has matured sufficiently,it has a promising application prospect in automatic distribution systems.However,communication networks for power grid should be more security,but the security protection of 4G network for power gird is not mature.Based on the application mode of 4G network in power system,the security risk was analyzed,then the specific safety protection methods were presented,which would guide the further application of 4G network in power system.