Design And Application Research Of Distribution Automation System In Pingxiang City

With the continuous development of economic level in Pingxiang city,problems in distribution grid gradually appear,which causes severe challenge to the power supply reliability.In order to enhance the power supply reliability of distribution grid and strengthen the monitoring of distribution network,this paper studied the construction scheme of distribution grid automation system Pingxiang city.First of all,the paper studied the present situation and the planning target of the distribution grid automatic system,which laid the foundation for the design of the network automation system.Second,it studied the construction scheme of distribution network automation system in Pingxiang city,mainly including the construction of the main station,communication network construction and terminal construction.In accordance with the scale of the distribution network information points in Pingxiang,it put forward medium primary station system construction of "the basic function + the extended the function",and the hardware configuration and the main function were analyzed;Calculated by telecommunication broadband demand,it proporsed to adopt optical fiber communication and proposed LAN communication mode based on the technology of TCP/IP to build primary station communication network.It also adopted MSTP integrated data optical terminal network as the network structure of sub-station system.It adopted the EPON network as the access network of distribution network terminal,and it studied the feasibility of the communication network;Based on the research of FTU and DTU of several manufacturers,the FTU device of DS3250 and the DTU device of CA6200 were finally adopted.Finally,the implementation and effect evaluation of the distribution network automation system were analyzed.It put forward the information integration of distribution network automation system in Pingxiang city.And the general structure of the information system was established.and its overall framework,the bus information interaction,GIS renovation scheme were analyzed.Through the three aspects of telemetry,remote communication,remote control test,it confirmed the effectiveness of the construction of distribution network automation system.From the analysis of the technical evaluation,investment estimation,the application efficiency,the sample of distribution network automation system in Pingxiang city laid the foundation for wider construction.