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High- or medium-voltage electrical device including a submerged active induction portion having reduced noise

一种设备、中压的技术，应用在变压器/电感器噪声阻尼等方向，能够解决刚性大、不适合变压器箱等问题

Inactive Publication Date: 2013-01-16
ALSTOM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Strictly speaking, these structures are not suitable for applications in transformer boxes, such as transformers, because they are too rigid

Method used

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  • High- or medium-voltage electrical device including a submerged active induction portion having reduced noise
  • High- or medium-voltage electrical device including a submerged active induction portion having reduced noise
  • High- or medium-voltage electrical device including a submerged active induction portion having reduced noise

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] in figure 1 In the transformer 1 shown, the sound barrier 2 of the present invention is arranged away from the vertical wall 30A and the top plate 30B of the transformer box 3.

[0043] As shown in the figure, the transformer 1 includes an induction starting part 4 which is immersed in an insulating liquid (not shown in the figure) filled with the transformer tank 3.

[0044] in figure 2 In the illustrated embodiment, the sound barrier 2 is passive and consists of hollow metal tubes 20, which are sealed in insulating oil and are regularly separated from each other. More precisely, the specified distance p1 separates the two adjacent tubes 20 from a single wall by a certain distance, the distance p2 separates the two adjacent tubes 20 by a corner between the two vertical walls 30, and the distance p3 separates one of the vertical walls 30A. The two adjacent pipes 20 are separated from the top wall 30B.

[0045] figure 2 The hollow tube 20 shown has a generally rectangular c...

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PUM

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Abstract

The invention relates to a high- or medium-voltage electrical device (1) including an active induction portion (4), a vessel (3) surrounding the active portion and filled with a dielectric fluid, such as oil, and passive means (2, 20) for reducing the noise of the waves originating from the active portion and propagated in the dielectric fluid. According to the invention, the passive means create an interference field by dividing the propagated waves into two wave groups (01, 02) of opposite phase from one another in an area distant from the walls of the vessel so as to at least limit the amplitude thereof prior to contact therewith. The invention is an effective solution for significantly reducing the part of the noise propagated by the dielectric fluid medium.

Description

Technical field [0001] The present invention relates to high-voltage or medium-voltage equipment, such as transformers or induction coils, with an induction-activated part immersed in an insulating liquid. [0002] The invention relates to reducing the noise emissions of such equipment. [0003] In particular, the present invention relates to reducing the amount of noise caused by sound waves, which are discharged by the induction starting part of the equipment and propagate in the insulating liquid medium until it reaches the wall of the immersion tank filled with insulating liquid (such as oil). [0004] The equipment to which the present invention is particularly applicable includes induction coils and transformers, especially power transformers and distribution transformers in power distribution networks. Background technique [0005] In equipment such as transformers or induction coils with induction starting parts immersed in insulating liquid, it is well known that a considerab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/33
CPCH01F27/33
Inventor 弗朗索瓦·德沃克斯帕斯卡尔·沃格纳尔
Owner ALSTOM TECH LTD
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