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Three-phase intelligent energy meter

A smart electric energy meter, three-phase technology, applied in the field of electric energy meters, can solve the problems of narrow frequency application range, low accuracy, single function of inductive electric energy meters, etc., to achieve network management, strong plasticity, and high degree of integration. Effect

Inactive Publication Date: 2011-04-06
王淑芝
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AI Technical Summary

Problems solved by technology

[0002] With the development of the electric power industry, people pay more and more attention to the effective use of electric energy. At the same time, the power supply depa

Method used

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Examples

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Embodiment Construction

[0008] Such as figure 1 , figure 2 As we know, the three-phase voltage, three-phase current, three-phase PT, and three-phase CT are input to the single-chip system through CS5460A, and the single-chip system calculates and processes the received signals and displays them. Data can also be transmitted to the host computer through the communication interface. The power supply module supplies power to the single-chip microcomputer and the current and voltage acquisition circuit CS5460A. The voltage / current transformer is used as the sampling device, in order to measure accurately, the service life of the device can be improved. Adopt voltage and current channel surge protection. The CS5460A interface chip is connected with the serial interface of the computer. In order to protect the device, optocoupler isolation is used between the microcontroller and CS5460A. CS5460A can be used to measure the RMS value of AC voltage, RMS value of AC current and active power value, reacti...

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Abstract

The invention provides a three-phase intelligent energy meter, which is mainly characterized in that: an AT89S51 singlechip is taken as a core, and the three-phase voltage, current and power effective value of a power grid are measured by an energy metering chip CS5460ABC; the voltage of the power grid is converted by a voltage transformer and is input into a singlechip, and the current of the power grid passes through a current transformer and is input into the singlechip; the singlechip performs communication through a serial peripheral interface (SPI); and apparent power, active power and a power factor are calculated. The three-phase intelligent energy meter has the advantages of high integration degree, strong convertibility and the like. The system becomes an independent system, and also can communicate with an upper computer, so the networked management is realized, power supply enterprise management layers are facilitated to control power consumption conditions of enterprises, and the system has important significance for safety production and energy conservation and emission reduction.

Description

technical field [0001] The invention belongs to a metering electric energy meter, in particular to a three-phase intelligent electric energy meter. Background technique [0002] With the development of the power industry, people pay more and more attention to the effective use of electric energy. At the same time, the power supply department has more and more evaluation parameters for the power grid. The inductive energy meter has a single function, low accuracy, and narrow frequency application range. Contents of the invention [0003] The purpose of the present invention is to address the deficiencies in the above-mentioned technologies, and provide a multi-rate electric energy meter suitable for enterprises, which can calculate the total power consumption of users and the design value of each time period according to the peak, normal, and valley hours of the enterprise's power consumption. The power consumption of each time period can measure the voltage, current, appar...

Claims

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Application Information

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IPC IPC(8): G01R22/10G01R19/25G01R21/06
Inventor 王淑芝
Owner 王淑芝
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