Abstract: The dual-plane reconstruction of substation power dispatching data network can improve the reliability and safety of electricity production business data transmission from plants and substations to dispatching agencies at all levels. This paper analyzes some technical points of the implementation process in plant and substation, and studies the routing switching equipment in plant and station, network security equipments such as power private vertical encryptor and NAT firewall, and mainframe configuration technology points of power production business system. The project has been implemented in several 500 kV substations and achieved good results.