The Research And Application Of Dual-channel Communication Technology Of Power Distribution And Utilization Network In A Heterogeneous Environment

Electricity meter of power distribution and utilization transfers power data to master station by adopting GPRS network at present,but the situation of communication for power distribution and utilization is complicated and displays the unsteady signal for GPRS,slow rate for communication,make the communication between electricity meter and master station often at the interrupted situation and brings uncomfortable condition to the operation and maintaining for electric power.With the application of LTE230 exclusive net for large areas,the communication of electricity meter with master station by using the exclusive net could be on development.In the transition period of the conversion of the public network to the private network,looking for a dual-network compatible communication method is imminent.This research designs a scheme for electric power communication using GPRS and LTE230 simultaneously,without changing the electric meter or master station.This paper has some researches on the key technology of dual channel communication,including the research of active and standby switching and link aggregation Algorithm.This paper designs a multi-channel communication terminal,which can access the GPRS module and LTE230 module simultaneously,and do the active and standby switching according to the network status,to improve the equipment online rate.This paper designs a DualSocket whitch means dual-channel reliable transmission model,it can separate the data to each channel when the communication task is heavy to improve the data transmission efficiency.And then this paper designs a communication front gateway machine,whitch can translate IPs produced by the connection of different modules on the same terminal to the same IP and ensures the existing master station architecture remains the same.The front gateway machine can also integrate the dual-channel streaming data and transmit it to the master station.The main work of this paper is as follows:(1)This paper introduces the research background and research significance of the dual channel communication in heterogeneous network,and analyzes the research status of the dual channel communication technology in heterogeneous network both at home and abroad.(2)The related technologies are analyzed,such as GPRS wireless communication technology,LTE230 wireless communication technology,ARM processor and ucos embedded operating system,TCP/IP protocol stack,NAT network address transformation technology and network routing technology.(3)This paper proposes a dual channel communication architecture,carries out the researches on dual-channel active and standby switching and dual-channel link aggregation.The DualSocket whitch means dual-channel data aggregation reliable transmission model is designed and implemented.The congestion control algorithm and the data optimal shunt ratio algorithm based on the network delay and link bandwidth are designed and implemented.(4)The design and implementation of multi-channel communication terminal and front gateway machine are carried out.(5)Build a dual-channel communication test platform to complete the feasibility of dual-channel communication verification,and through data comparison,indicating that the dual-channel communication technology greatly improves the reliability and communication rate of the data transmission.