Research On Wireless Channel Propagation Model And Channel Database System In Power Grid Scenario

With the development of Internet of things technology,in recent years,the state grid corporation of China has fully implemented the global energy Internet,strengthened the digital and information-based strategic layout of smart power grid and distribution power grid,and intensified research on the application of power line communication network and wireless communication network to the low-voltage electricity acquisition network for smart electricity meter data acquisition.Based on the above requirements,the main research work of this paper is as follows:1.The wireless channel attenuation model in the scenario of power acquisition network in high-rise buildings is studied.Measurement model was proposed based on frequency channel attenuation measurement method,and obtained by the system to measure the wireless signal attenuation data in high-rise buildings,the isolation layer was developed based on the attenuation data channel transmission model,compared with traditional multiple wall floor model found that the interlayer channel model and the mean square error of the measured data was reduced by 17%.2.Based on the national grid company since 2012 to measure the power line communication channel characteristic data,research data and gives a kind of semantic segmentation algorithm,designed with the algorithm matching channel characteristic database,the algorithm will store huge amounts of power line channel data of traditional file system data classification and data file storage format standardization,improve the degree of channel characteristic of digital data.3.based on channel characteristic database developed channel characteristic database management system,write the database driver in the management system,management system and the front-end WEB server software data visualization application interface,through the system,the channel characteristic data distributed to client access within the local area network(LAN),flexibility,data access for those not familiar with database provides a WEB interface,data visualization can improve the channel characteristic data of ease of use.The work of this paper provides technical support for the research on time-frequency characteristics of power lines and wireless channels in the power information acquisition system of state grid corporation of China in digitization and informatization of channel characteristic data.