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Alternating current measuring device

A measuring device, the technology of alternating current, applied in the direction of measuring device, only measuring current, measuring electrical variables, etc., can solve the problems of criminals attacking, affecting the measurement results, etc., to improve safety, reduce cost, and reduce the number of turns. Effect

Active Publication Date: 2018-08-28
BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. The principle is very simple, and the technology is very easy to obtain, which makes the measurement process easy to be attacked by criminals (such as electricity thieves), which in turn affects the measurement results

Method used

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Embodiment Construction

[0023] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0024] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0025] The invention provides an AC current measurement device, the principle is relatively complicated, the technology is not easy to obtain, the measurement process is not easy to be attacked, and the security is improved. Moreover, the number of turns of the secondary winding of the device is relatively small, ranging from a few turns to tens of turns, so the material cost is relatively low, and time is saved when windin...

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Abstract

The invention discloses an alternating current measuring device. The alternating current measuring device comprises a magnetic circuit, an oscillating circuit, a timing counting circuit, a current calculating module and a current display module, wherein the magnetic circuit comprises a magnetic core, a primary winding and a secondary winding, the magnetic circuit is used for realizing impedance transformation, the oscillating circuit is connected with the secondary winding and is used for generating the oscillation frequency, the timing counting circuit is connected with the oscillating circuit and is used for acquiring the periodic frequency mean of measured current fundamental waves, the current calculating module is connected with the timing counting circuit and is used for calculatinga detected current value according to the periodic frequency mean of the measured current fundamental waves, and the current display module is connected with the current calculating module and is usedfor displaying the detected current value acquired by the current calculating module through calculation. The alternating current measuring device is advantaged in that the principle is relatively complex and is not obvious, so the alternating current measuring device is not easily attacked by humans, and safety is improved.

Description

technical field [0001] The invention relates to the field of power system measurement, in particular to an alternating current measurement device. Background technique [0002] In order to ensure the safe and economical operation of the power system, it is necessary to monitor and measure the operation of the power equipment. The main technical solutions in AC current measurement include: traditional current transformers and Rogowski coils. [0003] The traditional current transformer is based on the principle of balancing the magnetic potential of the winding on the closed magnetic circuit composed of high-permeability soft-magnetic materials to realize the measurement of alternating current. figure 1 It is the schematic diagram of the alternating current measurement of the conventional current transformer in the prior art. figure 1 The meanings of reference signs in are as follows: I 1 : primary current; N 1 : primary turns; I 2 : secondary current; I e : excitation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R19/0092
Inventor 李胜芳周辉郭飞姜帆杜君王于波
Owner BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY
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