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Electromagnetic shielding shell for power transmission line one-line monitoring device

An electromagnetic shielding shell and monitoring device technology, which is applied in the field of detection, can solve the problems that electromagnetic interference cannot be effectively shielded, the structure of the shell is complex, and the shape and volume are large, and the effects of low cost, good shielding effect and small volume are achieved.

Inactive Publication Date: 2012-08-08
TAIYUAN POWER SUPPLY OF SHANXI ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing state monitoring devices on the high-voltage side of transmission lines generally use a single-layer casing. Due to the differences in the shielding performance of the casing materials for electromagnetic waves of different frequencies, electromagnetic interference in some frequency bands cannot be effectively shielded.
In addition, the single-layer shell must not only ensure the convenience of installation but also ensure the normal operation of the internal electronic components, so the structure of the shell is complicated, the shape is large, and the manufacturing cost is high

Method used

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  • Electromagnetic shielding shell for power transmission line one-line monitoring device
  • Electromagnetic shielding shell for power transmission line one-line monitoring device
  • Electromagnetic shielding shell for power transmission line one-line monitoring device

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Embodiment Construction

[0016] see figure 1 , figure 2 , the present invention is mainly composed of a metal outer casing and a metal inner casing. In view of the strong shielding effect of galvanized iron on low-frequency electromagnetic waves, and the advantages of anti-corrosion and easy processing, the outer shell is made of galvanized iron. The aluminum material has a good shielding effect on high-frequency electromagnetic waves, so the inner shell adopts an aluminum alloy square shell sold on the market. The outer casing is composed of an upper half tank 3 and a lower half tank 11. One side of the upper half tank 3 and the lower half tank 11 are connected by a hinge 2, and the other side is connected by a compression screw 10. After the compression screw 10 is compressed, the upper The half tank 3 and the lower half tank 11 will be firmly fixed on the high voltage line 1.

[0017] The sealed inner casing is made of aluminum alloy, which mainly shields high-frequency electromagnetic waves an...

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Abstract

The invention relates to an electromagnetic shielding shell for a power transmission line one-line monitoring device. The electromagnetic shielding shell consists of an outer metal shell, an inner metal shell and a horizontal metal casing pipe, wherein the outer metal shell is shaped like a horizontal cylindrical tank; the metal casing pipe is sleeved on a high-voltage line and passes through the outer metal shell; the inner metal shell is positioned in the outer metal shell; and the power transmission line one-line monitoring device is arranged in the inner metal shell. The electromagnetic shielding shell has the advantages of small volume, low cost, convenience for mounting and the like, has a good shielding effect, and can guarantee normal operation of the power transmission line one-line monitoring device.

Description

technical field [0001] The invention relates to an electromagnetic shielding metal shell used for an on-line monitoring device on the high-voltage side of a high-voltage transmission line, and belongs to the technical field of detection. Background technique [0002] On-line monitoring of transmission line status is the foundation of smart grid and plays an important role in the safe and reliable operation of transmission lines. The state monitoring device on the high voltage side of the transmission line is used to collect the relevant state data of the conductors and insulators of the transmission line, which is indispensable for the state monitoring of the transmission line. Since it is installed on the high-voltage side, in addition to the strong power-frequency magnetic field generated by the wire current, this device also directly forms a strong power-frequency electric field on the surface of the shell (proportional to the voltage level of the line); in addition, the ...

Claims

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Application Information

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IPC IPC(8): G01R1/18G01R1/04
Inventor 崔彦彬陈志勇朱永利王进平张慧兵马兴誉
Owner TAIYUAN POWER SUPPLY OF SHANXI ELECTRIC POWER
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