Split type electronic current transformer

A current transformer, electronic technology, applied in the direction of inductor, voltage/current isolation, transformer/inductor coil/winding/connection, etc., can solve problems such as inability to meet development needs, achieve light weight and high measurement accuracy , the effect of reducing the amount of construction

Inactive Publication Date: 2015-11-18
NR ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the computerization and digitalization of measurement and protection devices, and the continuous promotion of smart substations, the existing split current transformers can no longer meet the current development needs

Method used

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  • Split type electronic current transformer
  • Split type electronic current transformer

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Embodiment Construction

[0021] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, the present invention provides a switchable electronic current transformer that can be easily installed in substations with voltage levels of 66kV, 110kV, 220kV, 330kV, 500kV and 750kV for current monitoring, control and relay protection. Including the first coil housing 1, the second coil housing 2, the remote module 3, the remote module box 4, the aviation plug male 5, the aviation plug female 6, the hollow coil 7 and the housing cover 8, the following Introduce separately.

[0023] The first and second coil housings 1 and 2 are both semicircular, and they are symmetrical to each other. After being connected, they can be fastened by bolts to form a standard circular ring housing, such as figure 1 shown.

[0024] The hollow coil 7 adopts non-magnetic material as the skeleton. The hollow coil 7 is cut in...

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PUM

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Abstract

The invention discloses an open-close type electronic current transformer which comprises two semicircular coil shells, a hollow coil, a far end module, an aviation plug and a DC (Direct Current) power supply. The hollow coil uses a nonmagnetic material as a skeleton; after the hollow coil is cut into two symmetrical parts, the two symmetrical parts are respectively fixed in the two coil shells; the cut position of the hollow coil is connected by the aviation plug; two terminals of the hollow coil are led to the far end module through a two-core shielded twisted pair; the far end module is used for acquiring an analog quantity voltage signal output by the hollow coil and outputting the analog quantity voltage signal through an optical fiber; and the DC power supply is connected with the far end module and supplies power to the far end module. The current transformer can be used for conveniently carrying out installation, disassembly and measurement under the condition that a primary measured circuit is not broken.

Description

technical field [0001] The invention belongs to the field of high-voltage electrical appliances for power transmission and transformation equipment and the field of measurement, and relates to a current transformer, in particular to a split-type electronic current transformer that is easy to assemble and disassemble and flexibly installed, and is suitable for 10kV, 35kV, 66kV, 110kV, Current monitoring, control and relay protection in substations of 220kV, 330kV, 500kV and 750kV voltage levels. Background technique [0002] Current transformers are widely used in the measurement and protection of power systems, and are important equipment in power systems. The complete structure of the current transformer requires the primary conductor to be disconnected and a breakpoint occurs during installation, so that the primary conductor of the transformer itself is connected in series in the tested line or the tested primary wire passes through the center of the feedthrough current t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F38/30H01F27/28H01F38/32G01R15/18
Inventor 卢为曹冬明须雷罗苏南胡桂平朱长银刘彬王强
Owner NR ENG CO LTD
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