Design Of Low-voltage Centralized Reading System In Mountainous And Hilly Areas Based On OFDM

With the continuous attention of the world to the development of power grid,the progress of power grid is becoming faster and faster.Smart power grid is applied in all fields of China,and low-voltage collection system is gradually being comprehensively popularized.Because the western region of China is sparsely populated,the environment is extremely harsh,and the eastern region is densely populated,the application of low-pressure collection system becomes extremely difficult,which makes the popularization of low-pressure collection system face a huge test.In order to further improve the accuracy,efficiency and safety of grid metering and billing,it is necessary to continuously optimize the manual collection system and apply OFDM low-voltage collection system to the current power system,so as to provide more satisfactory service quality and improve people’s concept of grid.Represented by mountainous and hilly regions,this project takes the design of OFDM low-pressure collection system as the research content to conduct in-depth research on low-pressure collection system from all aspects.First of all,through to the topic research background,research status and future trend of low voltage set copy system are summarized and concluded,from the copy system structure and composition of the set of low pressure,analyzed the system main,concentrator,collector,communication module and the functions of the RS-485,and illuminates the OFDM communication principle of low voltage set copy system,design principles and requirements,the implementation of low set copy for OFDM system lay a good foundation;Secondly,the basic concept and classification method of the low-voltage collection system are introduced.Based on this,a detailed analysis is carried out.Each prediction method is analyzed and studied,and different methods are adopted to carry out the collection of power network measurement.Thirdly,a reasonable comparison and analysis are made between the networking mode of the low-voltage system and the carrier scheme to obtain the best communication scheme,which will lay a good foundation for the application of OFDM low-voltage collection system and improve the application effect and accuracy of the system in mountainous and hilly forest areas.Finally,the communication modes of the low-voltage collection system are divided into upper and lower communication modes for analysis and research.Based on the structure of the low-voltage collection system introduced in the previous chapter,the OFDM low-voltage collection system is proposed.Taking the mountainous and hilly area of Guangxi as the analysis object and the actual platform area as the pilot area,the application test of the new technology is carried out,and the correct conclusion is drawn,so as to guide and standardize the construction and application of the low-pressure collection system in Guangxi and improve the application standard and collection success rate of the electric energy collection system in the mountainous and hilly area of Guangxi.By optimizing the backward meter reading methods in the past,the accuracy and efficiency of meter collection are effectively improved and the errors of the system are reduced,which lays a good foundation for the stable operation of OFDM low-voltage collection system.