Large-scale array type system state monitoring and software upgrading method based on optical fiber communication
A software upgrade and system status technology, applied in the direction of optical multiplexing system, optical fiber transmission, transmission system, etc., can solve the problems of low communication efficiency, small number of subsystem monitoring and upgrading nodes, and mutual coupling of subsystems susceptible to interference, etc. problems, to avoid networking, shorten the time for software upgrades, and improve anti-interference
Active Publication Date: 2019-03-01
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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[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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[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0033] by figure 1 Take the typical system shown as an example, which consists of 3200 subsystems. Upgrade the software of the subsystem whose ID number is 0; the rest of the subsystems will enter parameter monitoring after they start running, and modify the control parameters of the subsystem whose ID number is 5 under state monitoring during operation. Among them, step 1 and step 2 only need to be operated once when the system is assembled; during normal use of the system, it is performed from step 3. figure 2 It is a schematic diagram of the data flow of the first group of subsystems in this typical system. The rest of the subsystems are the same in structure and principle as the first group. image 3 It is the functional block diagram of the data preprocessing board of the first group of subsystems, and assigns a data input shift regist...
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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 large-scale array type multilevel converter (MMC) flexible direct current transmission converter station and a method for state monitoring and software upgrading of a valve control system based on optical fiber communication. Background technique [0002] For a large-scale array system such as a multilevel converter (MMC) flexible direct current transmission converter station and a valve control system, its status monitoring and software upgrade are a key issue after the system is put into use. Stand-alone systems are easier to achieve reliable and stable status monitoring and rapid software upgrades. Such large-scale array systems use 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 the limitation of the maximum number of nodes and communication stability problems, and the application environment of large-sca...
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IPC IPC(8): H04J14/02H04B10/25G06F8/65
CPCG06F8/65H04B10/25891H04J14/0219H04J14/0272
Inventor 张剑颜朝鹏彭萌温旭辉
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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