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Intelligent electronic current transformer

A current transformer, electronic technology, applied in the field of electric power, can solve the problems of high structural redundancy, lack of detection mechanism for transformers, and less than ideal power consumption ratio.

Inactive Publication Date: 2016-03-30
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing electronic current transformers have the following defects: (1) The structure redundancy is high, and the power consumption ratio is not ideal, resulting in poor quality of the products produced; (2) The transformer itself lacks internal defects and The detection mechanism of external defects still adopts the manual fixed-point detection mode, and the accuracy and real-time performance of the detection results cannot be guaranteed

Method used

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  • Intelligent electronic current transformer

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Embodiment Construction

[0016] The implementation of the intelligent electronic current transformer of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] The structure of an ordinary transformer is as follows: The structure of an ordinary current transformer is relatively simple, consisting of mutually insulated primary windings, secondary windings, iron cores, frames, housings, terminals, etc. Its working principle is basically the same as that of a transformer. The number of turns (N1) of the primary winding is less, and it is directly connected in series to the power line. When the primary load current (I1) passes through the primary winding, the alternating magnetic flux induction generated produces proportionally reduced Secondary current (I2); the number of turns (N2) of the secondary winding is large, and it forms a closed loop in series with the secondary load (Z) of the current coils such as instruments, relays, and transmitters. Equ...

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Abstract

The invention relates to an intelligent electronic current transformer. The current transformer includes an electronic current transformer main body, a local discharging detection instrument, and an ARM chip, the local discharging detection instrument performs defect type detection on the casing of the electronic current transformer main body, and the ARM chip receives the defect type detection results and transmits the defect type detection results to a far-end measurement server. According to the invention, the defect automatic detection of the on-site casing of the electronic current transformer is realized while the structure of the electronic current transformer is optimized.

Description

technical field [0001] The invention relates to the field of electric power, in particular to an intelligent electronic current transformer. Background technique [0002] The development history of transformers: Transformers first appeared at the end of the 19th century. With the development of the power industry, the voltage level and accuracy level of transformers have been greatly improved, and many special transformers have been developed, such as voltage and current composite transformers, DC current transformers, and high-accuracy current ratios. And voltage ratiometer, high-current laser current transformer, electronic circuit compensation transformer, photoelectric transformer in ultra-high voltage system, and voltage and current transformer in SF6 fully enclosed combined electrical equipment (GIS). In the power industry, to develop a power system with a voltage level and scale, a transformer with a corresponding voltage level and accuracy must be developed to meet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/18
CPCG01R15/18
Inventor 彭冬青
Owner STATE GRID CORP OF CHINA
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