A Study On The Design Of Large Capacity Optical Transmission Network In Anhui Electric Power Communication System

With the deep-going construction of the robustness smart grid, which leads a growing demand for information technology applications, as well as the diversity of the grid business and the development of broadband technology have put forward higher requirements for the communication among power systems. Various of information technology applications of electric power market now has entered into a practical stage. There has a wide application scope for these systems, whose real-time and reliability requirements have increasingly grown as well as higher requirements of bandwidth. By far, only rely on the backbone transmission network in synchronous digital system based on SDH technology cannot meet the needs of the development of power grid. Therefore, how to improve the performance of the communication system and increase the system bandwidth, in order to meet the requirements of carrying more IP services, now has become the focus of the research for the power communication networks.Considering the bottleneck that exists in the current electric power communication network transmission capacity, in this paper, the construction of a large capacity optical transmission network system based on the OTN(optical transport network) is proposed, in order to ensure the stability and safety of the Anhui electric power communication system. Basic theory of OTN technology and network protection technologies is first introduced in this paper, and a comparison with other communication technologies is made to highlight the advantages of OTN technology and its networking features. The status of electric power communication network in Anhui is then studied intensively with the combination of the 13 th Five-year Plan of the power communication of Anhui for its future business requirements are analyzed in detail, thereby two solutions are proposed, which are the solutons for the original network upgrade process and the new OTN backbone networks, and a trade-off is made among the investment amount, operation and maintenance management and safety performance for the two solutions, as a consequence, the necessity of the construction of OTN backbone networks is determined. Then combining with the existing cable resource of Anhui grid, the implementation of the newly constructed large capacity optical transmission network is then accomplished with the consideration of topology planning, equipment selection, protection mode and network management functions, focus on planning of the network channel allocation scheme, so as to provide a reliable platform which has a better IP-carring service with a high transmission rate feature for the future. Finally, after the construction of the proposed large capacity optical transmission network system, the main service bearing mode of Anhui electric power communication system, as well as the shortcomings of the newly constructed system and the future research directions are analyzed in this paper.