A wide-range zero-flux current proportional converter

A technology of current ratio and zero magnetic flux, which is applied in the direction of measuring electric variables, changing the range circuit, measuring current/voltage, etc., to achieve the effect of low cost, solving detection problems, and strong operability

Active Publication Date: 2018-01-09
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of program-controlled switching of the range in the current measurement process, achieve wide range measurement of the current, reduce the volume and weight of the current ratio conversion equipment, simplify the operation process, reduce labor intensity, and improve efficiency. The present invention provides A wide-range zero-flux current proportional converter

Method used

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  • A wide-range zero-flux current proportional converter
  • A wide-range zero-flux current proportional converter
  • A wide-range zero-flux current proportional converter

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] Such as figure 2 As shown, a single-range zero-flux current proportional converter includes a magnetic balance detection winding N T , a secondary proportional winding N 2 , toroidal iron core Ⅰ and toroidal iron core Ⅱ, a current sampling resistor, a magnetic balance detection and drive circuit, multiple proportional winding range switching relays, among them, the magnetic balance detection winding N of the zero-flux current transformer T Evenly wound on the annular iron core Ⅰ1, and then the annular iron core Ⅱ2 is embedded inside the annular iron core Ⅰ1, and then the proportional winding is evenly wound on the annular iron core Ⅰ1 and the annular iron core Ⅱ2, and the primary winding is also uniformly wound on the On the annular iron core Ⅰ1 and annular iron core Ⅱ2; according to the basic principle of the current transformer, the excitation current is ...

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Abstract

The invention discloses a wide-range zero-flux current scaling converter which comprises a magnetic balance detecting winding, a proportional winding, a circular core I, a circular core II, a current sampling resistor, a magnetic balance detecting and driving circuit, and a plurality of proportional winding range switching relays, wherein the magnetic balance detecting winding is uniformly wound on the circular core I, and then the circular core II is embedded in the circular core I; the proportional winding as well as a primary winding is uniformly wound on the circular core I and the circular core II; a secondary proportional winding N2 comprises a plurality of proportionally segmented windings; the proportionally segmented windings correspond to proportionally segmented winding terminals; the proportionally segmented winding terminals correspond to the proportional winding range switching relays. According to the wide-range zero-flux current scaling converter, the problem that the current range adaptability is low is solved; current can be detected automatically by utilizing the wide-range zero-flux current scaling converter.

Description

technical field [0001] The invention relates to a wide-range zero-flux current proportional converter, belonging to the technical field of electromagnetic measurement. Background technique [0002] Current proportional conversion usually adopts current transformer. Current transformer has the advantages of high accuracy and stable performance, but it is bulky and heavy, and there are many primary and secondary current terminals. The current wires of the terminals are disconnected, the operation process is complicated, the labor intensity is high, and the efficiency is low; it is difficult to measure the wide-range current with a current transformer. Contents of the invention [0003] The purpose of the present invention is to solve the problem of program-controlled switching of the range in the current measurement process, achieve wide range measurement of the current, reduce the volume and weight of the current ratio conversion equipment, simplify the operation process, r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F38/30H01F38/32H01F27/30G01R15/09G01R19/00
CPCG01R15/09G01R19/0092H01F27/306H01F38/30H01F38/32
Inventor 靳绍平李敏李东江王英刘见罗晓玉黄炜罗东江刘强黄洋界王琼陈斌杨爱超
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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