Converter valve tower vibration monitoring system

Abstract

A converter valve tower vibration monitoring system disclosed by the embodiment of the present invention comprises reflectors and photosensitive screens, laser sources, photoelectric converters and a vibration monitoring device, wherein the reflectors comprise a first reflector and a second reflector which are arranged at the adjacent two lower edges of a converter valve tower and both are connected with the corresponding lower edges of the converter valve tower movably, the photosensitive screens comprise a first photosensitive screen and a second photosensitive screen which are used for receiving the light rays reflected by the first and second reflectors, and the laser sources comprise a first laser source and a second laser source which are arranged in the bottom surface of a valve hall corresponding to the bottom surface of the converter valve tower; the photoelectric converters comprises a first photoelectric converter and a second photoelectric converter which are connected with the first photosensitive screen and the second photosensitive screen respectively and electrically, and the vibration monitoring device is connected with the first photoelectric converter and the second photoelectric converter electrically. By utilizing the optical reflection principle, the converter valve tower vibration monitoring system of the application can detect the mobile displacement generated by the vibration of the converter valve tower real-timely, and can monitor the vibration of the converter valve tower accurately.

Description

technical field [0001] The invention relates to the technical field of power system monitoring, in particular to a vibration detection system for a converter valve tower. Background technique [0002] The converter valve is the core equipment in the direct current transmission system, and there are many kinds of converter valves, among which the transistor converter valve is the most commonly used one. Due to the limited withstand voltage level of a single thyristor of a transistor converter valve, multiple thyristor converter valves are connected in series to form a valve section in actual engineering. The valve sections are assembled into a converter valve group, and the valve groups are stacked and connected to form a converter valve tower. The valve tower is generally suspended on the top of the valve hall. When the converter valve is working, it will turn on and off the large current at a high speed (millisecond level), so it will generate strong high-frequency electro...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a converter valve tower vibration detection system to solve the problem of inaccurate vibration monitoring of converter valves in the prior art

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