Research On Power Line Carrier Communication Technology For Distribution And Consumption Power Of Internet Of Things

With the development of smart grid,a large number of distributed energy devices access to the smart grid.The communication terminals are evolving towards intelligence,the new services in distribution and consumption power network and the communication demand within the station area and users’ family is increasing.The traditional power network cannot meet the requirements of reliability and efficiency under the new services,the power line carrier communication with Internet of Things technology provides a good solution to this problem.The power line is widely distributed,and no additional wiring is needed.The power line carrier communication is characterized by high economy,high transmission rate and good reliability,which is suitable for the communication of Internet of things.At the same time,the accessing or outputing of distributed equipment in the Internet of Things will lead to the dynamic change of the topology of the communication network.And the influence of channel attenuation and multipath will cause the change of channel transmission characteristics.Therefore,it is necessary to study the adaptive routing method to find the optimal transmission path and improve the communication efficiency and reliability.Firstly,according to the characteristics of hierarchical network topology from distributed area to user’s home,the overall architecture of the distribution and consumption power of Internet of Things is established,in order to meet the diverse communication needs of users.At the same time,the adaptability of power line carrier communication technology in the distribution and consumption power of Internet of Things is analyzed.A channel model based on transmission line theory is constructed,and the influence of network topology on the transmission characteristics of the channel is analyzed.Aiming at the dynamic change of network topology in the Internet of Things,the power line carrier routing algorithm is studied to improve the connectivity and reliability of communication network.This paper proposes an improved ant colony algorithm based on greedy strategy of transmission delay and data packet loss rate as constraints.At the same time,combined with multi-path selection strategy,it provides multiple alternative paths to improve the success rate of data transmission.The simulation results show that the proposed routing algorithm has the advantages of small transmission delay,low packet loss rate and high throughput.Compared with other algorithms,it is more suitable for routing in power line carrier communication network.