DATA COMMUNICATIONS IN ROMANIAN POWER NETWORK

摘要

The implementation of a high capacity optical communication backbone in the power utility raisesinvariably the question of how to use the available bandwidth in an optimal manner to provide therequired services and applications cost effectively and at the same time to assure the availability and faulttolerance expected in a mission-critical communication network. Different architectural and technologicaloptions must be assessed in view of the requirements and constraints.Considering that telecommunication technology is in a state of permanent evolution and that therequirements are often themselves only partly characterized (often extrapolated from the existing system),the approach to the problem must be a pragmatic one. A solution that appears promising may end up to bemarginally suitable in time, the volume of a traffic may end up to be over- or under-estimated and itsdistribution matrix may end up to be very different from the prevision. It is therefore extremely importantto design the network for maximal flexibility and adaptability to different possible evolutions and trendsrather than finely tuned to the estimated information flow and designed to the specificities of a technology.The provision of communication services to external users may add a new dimension to the architecturaldesign of the network. 'Which external users and where', 'which services' and 'how much bandwidth'are key questions that can rarely be answered in a precise manner at the time of system definition.This paper describes the architecture of the high capacity communication network which is beingimplemented in the Romanian power transmission system together with an analysis of the alternativesparticularly those concerning service integration and data networking.