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Electricity digital converter based on single-chip microcomputer and magnetic balance type mutual inductor

A magnetic balance, transformer technology, applied in the direction of electric power measurement by applying digital technology, can solve the problem of operating efficiency, safety and service life decline, threats to the reliability of relay protection communication devices, industrial production efficiency, and product quality. and other problems, to achieve the effect of powerful processing function and control function, simple structure and low power consumption

Inactive Publication Date: 2015-05-27
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor power quality will damage the electrical performance of power supply and consumption equipment, and its operating efficiency, safety and service life will all decrease, resulting in increased power loss in the power system, and a decline in industrial production efficiency and product quality
It may also threaten the reliability of relay protection and communication devices, and become a hidden danger to the safety of power systems

Method used

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  • Electricity digital converter based on single-chip microcomputer and magnetic balance type mutual inductor

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Embodiment

[0014] The signal voltage in the power grid is 220V / 380V or higher. It is difficult to measure directly by using existing electronic devices. You can use the winding coil induction current to convert the power grid signal into a measurable current signal and send it to the device. middle. The invention adopts the magnetic balance transformer. The grid signal is connected to the primary coil of the magnetic balance transformer, and the induced current is connected to the single-chip microcomputer chip to complete the detection of the current signal; after the grid voltage signal is converted into a current signal by connecting a resistor R in series, the same The specific size can be measured by a magnetic balance transformer.

[0015] Such as figure 1 As shown, the electric power digital converter of the present invention includes magnetic balance transformers and a single-chip microcomputer module chip 3 connected to each other, and the single-chip microcomputer chip 3 incl...

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Abstract

The invention relates to an electricity digital converter based on a single-chip microcomputer and a magnetic balance type mutual inductor. The converter is connected with a power grid and comprises the magnetic balance type mutual inductor and the single-chip microcomputer chip connected with each other; a single-chip microcomputer module comprises a detection circuit, a processing circuit and an inhibitory signal output circuit which are connected in sequence; an input end of the detection circuit is connected with the magnetic balance type mutual inductor; an output end of the inhibitory signal output circuit is connected with the magnetic balance type mutual inductor; the magnetic balance type mutual inductor is connected with the power grid. Compared with the prior art, the electricity digital converter is reasonable in design and simple in structure, an external AD (analog-digital) conversion device does not need to be added, and the magnetic balance type mutual inductor is directly connected with the single-chip microcomputer control chip; through low power consumption, low cost and powerful processing and control functions of the magnetic balance type mutual inductor and the single-chip microcomputer control chip, the detection precision is improved and the electricity quality is monitored.

Description

technical field [0001] The invention relates to a power digital converter, in particular to a power digital converter based on a single-chip microcomputer and a magnetic balance transformer. Background technique [0002] Since mankind entered the electrical age, electric energy, as an economical, clean and easy-to-use energy, has greatly promoted the development of industrial industries and social science and technology. While electric energy satisfies basic people's life and industrial production, people begin to pay more attention to the reliability, safety and quality of electric energy supply. Poor power quality will damage the electrical performance of power supply and consumption equipment, and its operating efficiency, safety and service life will all decrease, resulting in increased power loss in the power system, and a decline in industrial production efficiency and product quality. It may also threaten the reliability of relay protection and communication devices,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R21/133
Inventor 殳国华陈敏捷周平李丹张士文
Owner STATE GRID CORP OF CHINA
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