The Design Of Laos' Electric Power Optical Transmission Network Scheme Based On MSTP

The communication network for electric power system, running in Laos, is still based on the traditional SDH and PDH fiber-optic transmission network. Because of its small-scale, complex equipments composition, it cannot form an effective communication optical transmission network. Furthermore, power system communication services are still limited in production scheduling information and simple voice message transmission. With growth of the Laos'national economic strength, continuous expansion of network scale, and increase of communication network business types and business particles in communications bearer network, the establishment of a high degree of standardization, high reliability and large capacity communication Network for Laos'power system dedicated has become inevitable. Accordingly, a design of optical transmission network, based on MSTP, is selected. MSTP implements, IP, TDM and ATM etc., access, processing and transmission of multi-service businesses simultaneously; meanwhile, based on MSTP, communication network status of Laos by now is taken into consideration for design of network architecture, multi-service access solutions, network protection solutions and unified network management.First, focusing on problems of the Laos' power communication network, the communication network is divided into, transmission network, business network and support networks, three levels. Based on status analysis of the Laos' power grid and communications network, key technologies of MSTP and SDH are studied in the corresponding level of the application.Secondly, based on research on scheme of transport Network and the actual situation of the Laos power substations, the transmission network of Laos' power optical transmission network is divided into the core layer and the access layer in accordance with the concept of the hierarchical structure, which is for in-depth analysis of the network topology structure, network protection and recovery, network management and network protection and other aspects of the Laos' power optical transmission network, in order to determine the scheme.Then, based on the current situation of the Laos' power system business requirements, the concept of network bandwidth sharing is applied to design of bandwidth prediction and allocation for network nodes in core layer and access layer, of which the reasonability is proved by business analysis and is considered a basis for allocation to meet the requirements of the optical transmission equipment and establishment optical transmission network.Through performance parameters of some cable and optical fiber line, and Laos' environment, optical cable construction program for optical transport networks and interface configuration are determined.Finally, the main research results are concluded, and future research directions and trends for further are analyzed.