| The distribution automation system(DAS)is mainly composed of the main station,the sub-station and the remote terminal equipment,which enables the operator to monitor and adjust the remote electrical distribution equipment in real time.The Distribution Automation System(DAS)combines new technologies such as automatic control technology and information technology with new types of electrical equipment.The system can greatly improve the stability of the system operation and the quality of the electric energy,improve the efficiency of the operation of the power network,and reduce the work tasks of the relevant personnel.The rapid development of computer technology and information technology in the 21 st century has changed the society of all walks of life,and the operation of power systems has gradually evolved toward intelligence and automation.In this paper,the research status and development direction of communication automation system communication network are discussed,and the advantages and disadvantages of fiber communication,wireless private network communication,power carrier communication and other communication methods are compared,and various communication methods are effectively combined to achieve advantages.Finally,this paper identifies a hybrid communication system based on optical fiber communication,wireless communication,and power carrier communication.On this basis,the hybrid power distribution communication network will be fully covered to the Jingzhou distribution automation main station and terminal.According to the distribution network automation communication system applied by Jingzhou Power Supply Company,the demand analysis was carried out from the aspects of production scheduling business and management information service,and based on the traffic analysis results,the shortcomings of the existing Jingzhou distribution network automation communication system were summarized.Future demand has been forecasted and analyzed.It is estimated that by the end of 2020,there will be 30 220 k V substations,120 110 k V substations,140 system 35k V substations,40 subordinate units,9 city and county companies,and 9 city and county companies.All of them need to be included in the coverage of the regional optical fiber communication network.The total service demand of the above 348 sites on the optical fiber communication network is 37116.8M.The export capacity of existing city companies cannot meet the capacity increase of the “13th Five-Year Plan”.The exportbandwidth capacity of the second gathering point of the local city and the local city company should be increased to N*10G,and the county network circuit is needed to share the bandwidth of the three county transmission networks.Finally,the distribution network automation communication system of Jingzhou Power Supply Company was designed,and the planning direction of the wireless communication mode was the main method for the fiber communication,and the expected benefits were analyzed. |
