Multi-wavelength isolation optical switch equipment of intelligent substation process level and implement method thereof

Abstract

The invention relates to multi-wavelength isolation optical switch equipment and an implement method of the multi-wavelength isolation optical switch equipment. The switch equipment is applied to a process level of an intelligent substation and comprises a wavelength division multiplexer, a wavelength division de-multiplexer and a switching module, which are connected via a single optical fiber in turn. The switch equipment is respectively arranged at two network nodes of a process level network of the intelligent substation and is used for the process level equipment to access the network. According to the method, a wavelength division multiplexing mode of single optical fiber bi-directional transmission is used to enable a GOOSE network, an SMV network and an IEC61588 time synchronization network in the process layer to respectively load different light carrier signal wavelengths, and through the multiplexing via the wavelength division multiplexer and de-multiplexing via the wavelength division de-multiplexer, and the safe isolation of multiple network services is effectively achieved by utilizing the mutli-wavelengh characteristics, and a three-in-one network of the process level network is realized. The multi-wavelength isolation optical switch equipment and the implement method of the invention could reduce the number of fiber cores in the process level, reduce the construction cost of the intelligent substation, reduce maintenance cost and operating complexity and improve the reliability of a communication network in the process level.

Description

technical field [0001] The invention relates to a process layer communication network technology of an intelligent substation, in particular to an intelligent substation process layer multi-wavelength isolation optical switch device and an implementation method thereof. Background technique [0002] The smart substation process layer networking scheme and its security are the "hot spots" in the research and development of the smart substation process layer communication network. [0003] In existing digital substations, most of the networking methods at the process level are A and B dual-network networking and hybrid networking with one master and one backup. SMV, GOOSE and IEC61588 standard time synchronization are shared networks. The existing methods mainly consider the safety and reliability requirements of the protection device, and try to avoid failure of the protection function due to network failure. In addition to the protection device, the rest of the measurement ...

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Problems solved by technology

[0008] 5. Due to the obvious differences in the network requirements of SMV, GOOSE and IEC61588 messages, under the dual-network architecture, the cost of communication equipment and optical cables increases greatly, and there are many network interfaces for power equipment

However, with the deepening of the research on IEC61588, such messages require the participation of the CPU, so that the IEC61588 messages may pass through the VLAN, resulting in isolation failure. How to ensure the safe isolation of data transmission and network security issues are still not well resolved solve

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