Power filter capacitor noise reduction device and noise reduction method

A power filter and capacitor technology, applied in capacitors, electrical components, etc., can solve the problems of low noise frequency, large noise volume, and long transmission distance, and achieve the effect of reducing operating noise

Pending Publication Date: 2020-02-07
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large harmonic current passing through the equipment, the low frequency of the noise emitted by the electrical equipment, and the large size of the electrical equipment, the noise emitted by the converter station equipment is large, the propagation distance is long, and it is not easy to reduce the noise of the entire converter station. noise processing
Therefore, it may have a certain impact on the lives of residents near the converter station

Method used

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  • Power filter capacitor noise reduction device and noise reduction method
  • Power filter capacitor noise reduction device and noise reduction method
  • Power filter capacitor noise reduction device and noise reduction method

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Embodiment Construction

[0028] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but only to illustrate the essence of the technical solutions of the present invention.

[0029] Such as figure 2 , image 3 As shown, the present invention provides a power filter capacitor noise reduction device, which includes a sound-proof cover structure 1 and a sound-absorbing cavity structure 2, the sound-proof cover structure 1 is fixedly arranged on the top of the capacitor body 3, and the inside of the sound-proof cover structure 1 and the capacitor An air cavity 4 is formed between the top walls of the body 3 for reflecting and absorbing the energy of sound waves; the sound-absorbing cavity structure 2 is hermetically ...

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Abstract

The invention discloses a power filter capacitor noise reduction device and a noise reduction method. The device is characterized by comprising a sound insulation cover structure and a sound absorption cavity structure, wherein the sound insulation cover structure is fixedly arranged at the top of a capacitor body, and an air cavity is formed between the interior of the sound insulation cover structure and the top wall of the capacitor body and used for reflecting and absorbing energy of sound waves; the sound absorption cavity structure is arranged at the bottom of the capacitor body in a sealed manner. Noise sources with strong directivity at the top and the bottom of the capacitor body can be greatly reduced, so that the operation noise of the capacitor is greatly reduced.

Description

technical field [0001] The invention relates to a power capacitor noise reduction device, in particular to a power filter capacitor noise reduction device and a noise reduction method. Background technique [0002] In recent decades, with the advancement of power transmission technology, economic development and increase in energy demand, UHV DC construction has ushered in a period of rapid development. Due to the large harmonic current passing through the equipment, the low frequency of the noise emitted by the electrical equipment, and the large size of the electrical equipment, the noise emitted by the converter station equipment is large, the propagation distance is long, and it is not easy to reduce the noise of the entire converter station. noise processing. Therefore, it may have a certain impact on the lives of residents near the converter station. And because the degree of urbanization in our country continues to deepen, the population density near the converter s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G2/10
CPCH01G2/106
Inventor 文卫兵石岩李明杨勇张会民沈小益祝海涛王加龙曹燕明魏争孔娟
Owner STATE GRID CORP OF CHINA
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