Filter capacitor for converter station

Abstract

The invention relates to a filter capacitor for a converter station, which comprises a vacuum shell, a filter capacitor module and a vibration damper, the vacuum shell is provided with an extraction electrode, the filter capacitor module is arranged in the vacuum shell, the wiring end of the filter capacitor module is electrically connected with the extraction electrode through a flexible lead in a matched manner, and the vibration damper is arranged in the vacuum shell. The vibration reduction device comprises an axial fixing radial reset piece and a radial damping elastic piece, the axial end of the filter capacitor module is connected with the inner wall of the vacuum shell through the axial fixing radial reset piece, the radial damping elastic piece comprises a balance weight ring and a radial elastic piece, the balance weight ring is arranged on the filter capacitor module in a sleeving mode, and the radial elastic piece is arranged on the inner wall of the vacuum shell. The balance weight ring is arranged in the vacuum shell and connected with the filter capacitor module through the radial elastic piece, and a gap is formed between the balance weight ring and the inner wall of the vacuum shell, so that the balance weight ring is not connected with the vacuum shell when the filter capacitor module works. The filter capacitor for the converter station can reduce noise generated when the filter capacitor for the converter station works.

Description

technical field [0001] The invention relates to the technical field of filter capacitors, in particular to a filter capacitor for a converter station. Background technique [0002] It is pointed out in the technical descriptions of CIGRE and IEC on the noise of converter station equipment that the noise power level of filter capacitors can reach 105dB(A), and that of filter reactors can reach 90dB(A). Continuous noise has a huge impact on the surrounding environment. Long-term excessive vibration will cause great damage to the structure of the capacitor body, seriously reduce its service life and even cause failure, resulting in huge economic losses. In addition, the converter station is generally evaluated according to the Class II acoustic environment functional area, that is, it meets the requirements of 60dB(A) during the day and 50dB(A) at night. [0003] Sound is a sound wave produced by the vibration of an object. It is a wave phenomenon that is transmitted through ...

AI Technical Summary

Problems solved by technology

Continuous noise has a huge impact on the surrounding environment. Long-term excessive vibration will cause great damage to the structure of the capacitor body, seriously reduce its service life or even cause failure, resulting in huge economic losses

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