A Process-Layer Optical Network Structure of Inter-Wavelength Multicast

Abstract

The invention discloses a wave length mutual multicasting type process level optical network structure. The wave length mutual multicasting type process level optical network structure is characterized in that a plurality of groups of process level network devices are interconnected with a plurality of groups of bay level multicasting devices in a group-to-group correspondence manner through intermediate optical nodes, and all the process level network devices are connected with bay level semi-broadcasting or full-broadcasting devices; the intermediate optical nodes include optical access nodes and optical distribution nodes, wherein the optical access nodes are optical nodes on the process level side, and the optical distribution nodes are optical nodes on the bay level side; each group formed through the group-to-group correspondence interconnection includes at least two of the process level network devices and at least two of the bay level multicasting devices. The wave length mutual multicasting type process level optical network structure provided by the invention has the advantages that the required number of optical fibers is greatly reduced, the network structure is more orderly and simpler, the implementation is simple, and the maintenance is easy; through the wave length mutual multicasting of the intermediate optical nodes, the optical layer multicasting function and the sharing of network information on an optical layer are achieved, and the ''network sampling and network hopping'' method can be used; automatic network restructuring can be further achieved when optical cross connectors are adopted in the optical distribution nodes.

Description

technical field [0001] The invention belongs to the technical field of electric power system communication, relates to an electric power application optical communication network, and in particular relates to a process layer optical network system structure of an intelligent substation. Background technique [0002] The construction of smart grid is an important task for the development of power automation in my country. At present, the relay protection in substations mostly adopts direct mining and direct jumping to ensure reliable connection and communication QoS performance, but its wiring is complicated and maintenance is difficult, which will cause a lot of waste of cables or optical cables, and information cannot be shared. Networking with relay protection, that is, network mining and network jumping, can realize the sharing of network information, greatly simplify optical fiber wiring, improve debugging efficiency, and save construction costs. However, the research o...

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Problems solved by technology

However, the research on the key core issues restricting the application of relay protection network mining network hopping technology, that is, reliable sampling data synchronization technology and intra-station Ethernet communication reliability guarantee technology that meets the requirements of relay protection, is still not in-depth; In the application mode, the sampling data synchronization needs to rely on an external synchronization source, and for the reliable guarantee of the network transmission of the protection sampling trip data, at present, it mainly relies on reserving a larger network load margin, and there is no better technical means

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