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Electromagnetic induction insulator high-voltage current detector

A high-voltage current and electromagnetic induction technology, applied in the direction of voltage/current isolation, etc., can solve the problems of complex manufacturing process, difficult installation, high cost, etc., and achieve the effect of reducing installation, improving safety, and safe power supply

Inactive Publication Date: 2007-09-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as a high-voltage current detector, the high-voltage optical fiber current transformer has problems such as complicated manufacturing process, high cost and difficult installation.

Method used

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  • Electromagnetic induction insulator high-voltage current detector
  • Electromagnetic induction insulator high-voltage current detector

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Embodiment

[0019] The electromagnetic induction insulator high-voltage current detector adopts a kind of bus support insulator to be processed into an electromagnetic induction insulator high-voltage current detector. This kind of bus insulator is an insulator made by epoxy resin vacuum casting process, and then the detection coil is buried in the supporting insulator. The high-voltage bus at the upper end of the supporting insulator has no circuit connection with the detection coil, making it an electromagnetic induction Insulator high voltage current sensor. This insulator is installed in a high-voltage switchgear, which can not only support incoming and outgoing busbars, but also can be used as an electromagnetic induction insulator high-voltage current sensor. The weak voltage signal sent by it indicates the current on the high-voltage busbar after the signal detection circuit. Enhance the safety and reliability of high-voltage current detectors used in high-voltage switchgear.

[0020] ...

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Abstract

This invention relates to a kind of insulator high-tension current detector of electromagnetic induction. This detector includes support insulator (1), exploring coil (2) and signal detecting circuit(3). The exploring coil built in interior of support insulator, after connect connecting terminal of support insulator's lower end, and join to signal detection circuit by signal cable. Input end of signal multiplication circuit (4) in signal detection circuit connect with connecting terminal of support insulator lower end. Output port of signal multiplication circuit connects with input end of signal identification circuit (5). Electric current indicating circuit (6) connects with output port of signal identification circuit (5). electric current indicating circuit(6) by single-chip microcomputer chip to control blazing of seven segment nixie tube to complete detecting of high tension bus bar electric current.

Description

Technical field [0001] The invention relates to an electromagnetic induction insulator high-voltage current detector, which belongs to the application field of electrical engineering. Background technique [0002] With the increasing capacity of the power distribution network, electromagnetic current transformers are widely used in 10kV and 35kV high-voltage switchgear to detect the high-voltage side bus current. Due to the increase in the voltage level of the urban power distribution network, the insulation and safety problems of the secondary side of the electromagnetic current transformer have become more prominent, and the insulation breakdown of the secondary side of the electromagnetic transformer will affect the reliable power supply of the urban power distribution network system. In addition, the electromagnetic coupling between the iron core magnetic circuit of the electromagnetic current transformer and the line, cable or busbar equipped with capacitors often occurs in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/20
Inventor 刘念谢驰刘影刘路周明和
Owner SICHUAN UNIV
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