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Single current transformer energy acquisition and sampling circuit and control method

A technology of current transformer and control method, applied in program control, computer control, general control system, etc., to achieve the effects of accurate sampling signal, low cost, and controllable energy acquisition

Pending Publication Date: 2019-08-30
西安创特电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to disclose a single current transformer energy harvesting and sampling circuit and control method, which has the characteristics of controllable energy harvesting, accurate sampling signals and low cost in view of the above-mentioned deficiencies in the prior art

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  • Single current transformer energy acquisition and sampling circuit and control method
  • Single current transformer energy acquisition and sampling circuit and control method
  • Single current transformer energy acquisition and sampling circuit and control method

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specific Embodiment approach

[0034] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention Any modification of the structure, change of the proportional relationship or adjustment of the size shall still fall within the scope of the technical content disclosed in the present invention without affecting the effect and the purpose of the present invention. within the scope covered.

[0035] At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the...

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Abstract

The invention discloses a single current transformer energy acquisition and sampling circuit and control method. Main content comprises the fact that an overvoltage protection circuit is connected with a shunt circuit; the shunt circuit is connected with a current signal conversion circuit, a rectification and filtering circuit, an alternating current voltage signal positive half-cycle conversioncircuit and an alternating current voltage signal negative half-cycle conversion circuit. The rectification and filtering circuit is connected with a booster circuit and a direct current voltage signal conversion circuit. The booster circuit is connected with an MCU and an output voltage signal conversion circuit. The alternating current voltage signal positive half-cycle conversion circuit, the alternating current voltage signal negative half-cycle conversion circuit, the direct current voltage signal conversion circuit and the output voltage signal conversion circuit are connected with an A / D converter. The A / D converter is connected with the MCU. The circuit and the method are characterized by controllable energy acquisition, accurate signal collection and low cost.

Description

technical field [0001] The invention relates to the technical field of electric power automation, in particular to a single current transformer energy acquisition and sampling circuit and control method. Background technique [0002] With the development of smart grid, automation equipment such as digital sensors and online monitoring terminals are widely used. These equipment are limited by installation location, cost, insulation and other conditions, and usually use solar photovoltaic power generation, current transformer power supply, and capacitor voltage divider power supply , laser power supply and separate battery power supply methods, these power supply methods have their own advantages and disadvantages, but for equipment that needs to monitor the current of the power system, such as fault indicators, self-powered protection devices, etc., the power supply of current transformers is from the applicable environment, Comprehensive consideration of cost, reliability an...

Claims

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Application Information

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IPC IPC(8): G01R19/25G05B19/042
CPCG01R19/25G05B19/0428G05B2219/2612
Inventor 王根元温秀清
Owner 西安创特电气科技有限公司
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