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Open type Rogowski wire coil and application thereof

A Rogowski coil and open-type technology, which is applied in the field of current measurement, can solve the problems of difficult to meet high-precision measurement, measurement accuracy impact, installation difficulties, etc., and achieve the effect of good temperature stability, good parameter consistency, and not easy to deform

Pending Publication Date: 2017-02-01
威胜电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its measurement accuracy is affected by the skeleton material and wire winding
It is difficult to meet the requirements of high-precision measurement, and an additional external shielding structure is required, and its large volume makes it difficult to install

Method used

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  • Open type Rogowski wire coil and application thereof
  • Open type Rogowski wire coil and application thereof
  • Open type Rogowski wire coil and application thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] The words "up, down, top, bottom" and other words related to orientation in the present invention are relative descriptions adopted for the convenience of description based on the orientation in the drawings. Adjustment.

[0027] Such as Figure 1~3 A split Rogowski coil for a fault location device for distribution lines according to a specific embodiment of the present invention includes an upper half 1 of a Rogowski coil, a lower half 2 of a Rogowski coil, a shielded connection wire 3 and a signal lead-out 4 . The upper part 1 of the Rogowski coil and the lower part 2 of the Rogowski coil are a pair of semi-circular double-layer PCB boards. 4 is drawn from the normally open opening of the lower half of the Rogowski coil 2, and the other end of the opening is connected through the shielded connecting wire 3.

[0028] The top-layer PCB board and the bottom-layer PCB board have the same structure, stacked and arranged in a mirror image. That is, the Rogowski coil of t...

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Abstract

The invention relates to an open type Rogowski wire coil and application thereof. The open type Rogowski wire coil comprises double layers of PCB boards, each PCB board is formed by a pair of semicircle annular plates that are arranged opposite to each other, a gap is arranged between the semicircle annular plates that are arranged opposite to each other, and an interval insulating layer is arranged at the middle of each PCB board; two sides of the interval insulating layer are orderly and symmetrically provided with electric conduction layers, interval insulating layers and shielding layers from inside to outside; wire coils are laid on the electric conduction layers; the two shielding layers are electrically connected via through holes that are arranged close to an external diameter of the Rogowski wire coil and used for connecting two shielding layers, and therefore a Faraday cage shielding cover structure is formed. The Rogowski wire coil disclosed in the invention is good in anti-electromagnetic interference performance, no extra shielding structure is needed because the shielding layers and the wire coils are arranged on the PCB boards, a whole structure can be downsized, simple production can be realized, and high consistency can be achieved.

Description

technical field [0001] The invention belongs to the technical field of current measurement, and in particular relates to an open-type Rogowski coil, which can be used as a fault location device for power distribution lines. Background technique [0002] The Rogowski coil has the characteristics of wide measurement range, good linearity, simple structure, and no risk of open circuit. It is suitable for the measurement of current parameters of power lines. Generally, it can be divided into open type and closed type. The open type Rogowski coil is more convenient to install and maintain, and is suitable for applications where live conductors are not easy to disassemble. [0003] In the traditional open-type Rogowski coil, the wires are evenly wound on the skeleton made of non-magnetic flexible material, and the shielding structure is added outside. However, its measurement accuracy is affected by the skeleton material and wire winding. It is difficult to meet the requirements...

Claims

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Application Information

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IPC IPC(8): G01R1/18G01R31/08G01R19/00
CPCG01R1/18G01R19/00G01R31/086
Inventor 谈赛阳武周学成周到
Owner 威胜电气有限公司
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