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Transmission technologies are crucial to the automatic electric power systems in the smart grids. The goal is the higher bandwidth and reliability, just as in power line communication, microwave transmission, and the latest optical fiber communication. Based on the time division multiplexing, the fiber communication develops from the plesiochronous digital hierarchy and the synchronous digital hierarchy to optical transport network. The system can transmit the signal securely through hard pipes. Based on the synchronous digital hierarchy, optical transport network and the packet transport technologies, the MS-OTN is expected to offer secure, reliable, and flexible transmission for future electric power services.

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Based on the relevant meaning, advantages and characteristics of the OTN technology, the OTN equipment can be applied in man, including the application in the convergence layer, in building circuit scheduling and CPRI interface circuit loading of the access layer. As a transmission network technology in the metropolitan electronic power, the OTN has a broad prospect in development and application in the future.

No abstract