Optimized Application Of Power Line Carrier Communication In Tieling Distribution Automation

At present,The development of social economy promotes the urbanization in China can not be underestimated.The development of distribution network automation is beneficial to improve the power supply reliability of urban distribution network.Power carrier communication technology is a kind of advanced technology for communication using power transmission lines as a medium.,by virtue of the widest range of medium-voltage distribution networks for communication,there is no need to invest in the construction of communication lines,Such advantages as the firmness and reliability of the medium-voltage power line,has become an important local communication means for smart electricity consumption,is one of the important technical forces to promote the construction of smart grid.In recent years,the speed of urbanization construction has been relatively fast.,due to the large scale of the distribution network,less maintenance funds,and the relative lack of supporting facilities related to distribution network automation,therefore it is of great economic significance and economic significance to carry out research on the construction of communication network networks for automated distribution systems.In this paper,the following research work is carried out for the above situation:First of all,starting from the development status of distribution automation in Tieling area,using the natural advantages of existing power lines to transmit data and information without new wiring,research and analyze the distribution network currently has power line carrier communication mode,power line channel working impedance characteristics,attenuation transmission characteristics,and noise characteristics,and choose high-speed OFDM modulation and demodulation technology based on digital signal processing technology as the main modulation technology of this system.On this basis,the dynamic relay networking mode of MAC/PHY technology is analyzed,and channel coding and error correction are performed by DSP/FPGA.Then,starting with the current situation of distribution network in Tieling,analyzing the application principle of power line carrier communication in Tieling distribution automation,drawing the network topology according to the relevant technical guidelines and specifications,drawing up the carrier communication plan,analyzing the feasibility of dynamic adaptive networking’s scheme.Finally,developing relevant equipment,and selecting one wiring to pilot study.Testing the optimized power line carrier technology from three aspects: channel noise test,networking test and bandwidth test,using Pico Scope software to test the effect of local noise and frequency sweep signal,and testing working bandwidth of the system.Based on the test results,analyzing the performanceof the optimized power line carrier technology,verifing the power line carrier technology can realize the optimized application functions of high-speed signal modulation and demodulation,configurable working frequency band,signal attenuation reduction,and channel noise reduction,and providing reference for the application of power line carrier communication technology in power distribution automation.