Converter valve control system

Abstract

The application provides a converter valve control system. The converter valve control system comprises a converter valve workstation with dual redundancy configuration, a converter valve top-layer control device, a merging unit, a time synchronization device, a fault recording device, N sets of converter valve middle control devices with dual redundancy configuration, a single set of converter valve bottom-layer control device, a first switch and a second switch. According to the converter valve control system, the converter valve top-layer control device processes an unblocking instruction and a modulating wave sent by a converter station protection system, a generated submodule input quantity instruction is sent to the plurality of converter valve middle control devices, the plurality of converter valve middle control devices send the unblocking instruction to the matched converter valve bottom-layer control device, and the converter valve bottom-layer control device is controlled to control the submodule in the converter valve to execute the unblocking instruction, so that the control quantity of the submodules in the converter valve can be reduced by the converter valve control device, and the purpose of rapidly controlling the converter valve can be achieved.

Description

Technical field [0001] The invention relates to the technical field of direct current transmission, in particular to a converter valve control system. Background technique [0002] With the development of society, flexible DC transmission technology is a transmission technology based on flexible high voltage converter stations that flexibly controls active and reactive power and can supply power to weak AC systems. It is also the most important solution for grid connection of new energy generation and long-distance transmission. Best transmission technology. There are many equipment in the flexible high-voltage converter station, and the cost is relatively high. Among the many equipments, the converter valve, as the core equipment in the flexible high-pressure converter station, undertakes a lot of work. Therefore, the control of the converter valve is extremely important in the process of flexible DC transmission. Usually one converter is used. The flow valve control device co...

AI Technical Summary

Problems solved by technology

[0003] However, the converter valve is composed of multiple sub-modules, so the converter valve control device controls the converter valve is to control the sub-modules in the converter valve, but the number of sub-modules in the converter valve is large, through a The converter valve controls a large number of sub-modules, and the workload of the converter valve control device is huge, so that the control speed of the converter valve control device for each sub-module in the converter valve is reduced, which eventually leads to the inability of the converter valve control device to quickly control A large number of electronic modules in the converter valve work

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