Application Research Of TD-LTE Technology In Distribution Automation System

With the improvement of people’s living standards,people put forward higher requirements for the stability and fault recovery ability of power system.Distribution automation system uses advanced communication technology and means to improve the level of distribution management,which is an important guarantee for rapid repair of distribution faults.This paper took Liuzhou distribution communication network as the research object,and the fourth generation mobile communication technology(Time Division Long Term Evolution,TD-LTE)as the technical means,upgraded Liuzhou distribution automation system,and completed the design and implementation of distribution communication network system based on TD-LTE technology..Firstly,the distribution automation system and distribution network communication technology were investigated,the characteristics and functional requirements of distribution automation system are defined;different distribution network communication technologies were compared and analyzed,the technical indicators corresponding to the requirements of distribution automation system were defined,and the feasibility of TD-LTE technology applied in distribution automation system was analyzed.Secondly,the complex electromagnetic environment of the distribution automation system was analyzed,and the requirements of the distribution automation system on the anti-interference ability and reliability of the communication terminal were clarified.The anti-interference ability of TD-LTE technology was then analyzed,and the simulation test analysis of the station coverage was carried out.Then,based on the simulation analysis,taking the distribution automation system in Liuzhou as an example,the TD-LTE distribution network communication system architecture was designed,which solved the problems of unstable,unreliable and weak anti-interference ability of the existing distribution network communication channel.Finally,the TD-LTE distribution automation system was tested.Taking the surrounding area of Liuzhou Power Supply Bureau as the test area,the geographical and network environment was determined,the network connectivity and network response speed of the whole system were tested,the stability of the network was verified,and the network delay of the distribution automation communication system was obtained.The results show that the Liuzhou distribution network communication system based on TD-LTE technology ran stably,with high network communication quality.