Method for state monitoring and software upgrading of large-scale array system based on optical fiber communication

Abstract

The invention discloses a large-scale array type system state monitoring and software upgrading method based on optical fiber communication. An upper computer is connected with multiple data pretreatment boards via the Ethernet. Each data pretreatment board is connected with a sub-system communicating with the same via an optical fiber, a wavelength division multiplexer and a demultiplexer; and asending path and a receiving path between each data pretreatment board and the sub-system occupy different optical fibers. Therefore, independent communication channels are constructed between the data pretreatment boards and the sub-systems. The upper computer distributes data packets to the data pretreatment boards via the Ethernet, and the data pretreatment boards analyze the data packets, andextract the data of each sub-system; the data of each sub-system is remotely transmitted to the corresponding sub-system via the optical fiber by using a wavelength-division multiplexing technology; the multiple sub-systems remotely transmit the data needing to be sent to a remote control terminal via the optical fibers by using the wavelength-division multiplexing technology; and the data pretreatment boards integrate the data of each sub-system, and sends the same to the upper computer via the Ethernet.

Description

Technical field [0001] The invention relates to a method for state monitoring and software upgrading of a large-scale array type multilevel converter (MMC) flexible direct current transmission converter station and a valve control system based on optical fiber communication. Background technique [0002] For large-scale array systems such as multilevel converter (MMC) flexible DC transmission converter stations and valve control systems, its status monitoring and software upgrades are a key issue after the system is put into use. The stand-alone system is relatively easy to achieve reliable and stable status monitoring and fast software upgrades. This type of large-scale array system uses a large number of electronic control units, and it is difficult to monitor and upgrade all subsystems at the same time. Industrial fieldbus multi-node networking has problems with the maximum number of nodes and communication stability, and the application environment of large-scale array syste...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing state monitoring and software upgrading methods, such as the small number of subsystem monitoring and upgrading nodes, low communication efficiency, and the mutual coupling between subsystems is susceptible to interference. It is not suitable for large-scale array multi-electric In the flat converter (MMC) flexible direct current transmission converter station and valve control system, a large-scale array system status monitoring and software upgrading method based on optical fiber communication is proposed

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