Analysis And Modeling Of Wireless Communication Channels For Grid Condition Monitoring Equipment

The use of radio frequency identification technology,wireless sensor network technology and unmanned aerial vehicle technology in transmission line inspection and digital substations can achieve real-time acquisition and transmission of state information of power transmission lines and substation equipment,and accurate positioning of power equipment faults,etc.The smart grid and information management level.However,the complex environment of the power grid will affect the wireless communication channels in drone inspection transmission lines and digital substations.The path loss and Doppler effect may cause the reader to fail to obtain information.Therefore,it is necessary to analyze the radio channel characteristics of radio frequency identification in a specific scenario in a complex power grid.At present,most of the scholars at home and abroad pay attention to the issues of drone inspection path planning,obstacle avoidance algorithms,and image recognition for the UAV inspection transmission line,and less attention is paid to the characteristics of the wireless communication channel.In digital substations,scholars have focused on wireless communication network architectures,communication protocols,and information security,and have studied less about the impact of scatter distribution on wireless channels in digital substations.This paper first introduces the application and research status of unmanned aerial vehicle technology in the inspection of transmission lines,and the application and research status of wireless communication in digital substations.Then,according to the complex environment around the UAV inspection transmission line,a relatively complete environmental classification system is proposed,focusing on the path loss of the wireless channel and the high-speed movement of drones in rural farmland scenarios under the system.Puller effect.Finally,aiming at the complex distribution of scatters in digital substations,a variety of scatters models are proposed to describe them.The azimuth probability density functions of the signals of different scatters in different regions are compared,and the applicable environment for each model is given.condition.