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Low-voltage electric energy metering device utilizing optical fiber to transmit signal

An electric energy metering device and optical fiber transmission technology, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve problems such as restricting the development of electric energy metering devices, cumbersome wiring, and large limitations, so as to simplify the metering device scheme and improve metering accuracy , The effect of preventing electricity theft

Inactive Publication Date: 2012-09-19
南通能达电力科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional low-voltage metering device, there are as many as 10 wires from the current transformer to the meter. Not only the wiring is cumbersome and error-prone, but also the limitation of the analog signal transmission method is relatively large, which greatly restricts the electric energy metering device. development of

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  • Low-voltage electric energy metering device utilizing optical fiber to transmit signal
  • Low-voltage electric energy metering device utilizing optical fiber to transmit signal
  • Low-voltage electric energy metering device utilizing optical fiber to transmit signal

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Embodiment Construction

[0043]A low-voltage electric energy metering device using optical fiber transmission signals, including a three-phase electric energy collection device 1, the three-phase electric energy collection device is connected to a host computer 2 for displaying electric energy parameters; the three-phase electric energy collection device includes three-phase voltage, The metering chip acquisition module 3 for current collection, the metering chip acquisition module performs AD conversion and performs calculations to obtain voltage, current, power factor, active / reactive power signals and store them in the data storage module 4, which is paired by the MCU microcontroller 5 The data is selected and output, and transmitted to the optical transmitting module 7 (photoelectric conversion module) through the SPI bus and the communication module 6. The optical transmitting module converts the electrical pulse signal into an optical signal, and the optical signal is transmitted to the optical re...

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Abstract

The invention discloses a low-voltage electric energy metering device utilizing optical fiber to transmit a signal. The device adopts the structure that a three-phase electric energy acquisition device is connected with an upper computer which displays electric energy parameters; the three-phase electric energy acquisition device comprises a metering chip acquisition module used for acquiring three-phase voltage and three-phase current and subjected to AD (Analog Digital) conversion; the signal is stored in a data storage module; the data is selectively output by an MCU (micro control unit) to an optical transmitting module through an SPI (Serial Peripheral Interface) bus; the optical transmitting module converts an electric pulse signal into an optical signal which is remotely transmitted to an optical receiving module through the optical fiber; the optical recovering module converts the weak optical pulse signal, which is attenuated and deformed after being transmitted by the optical fiber, into electric pulse signal through photoelectric conversion; and the electric pulse signal is returned to the standard digital pulse signal which is displayed by the upper computer. The device provided by the invention can reduce comprehensive errors in electric metering, improves metering accuracy and avoids electricity theft.

Description

technical field [0001] The invention relates to a low-voltage electric energy metering device. Background technique [0002] The traditional low-voltage metering device is composed of metering meter, secondary circuit wiring, joint junction box, and current transformer according to the prescribed wiring method, and the wiring method has not changed so far. It is only developed from the original electromagnetic induction watt-hour meter to the electronic watt-hour meter that is widely used now. However, the current transformer is still an analog signal transmitted to the electronic energy meter. With the development of electric power technology, this signal transmission method can no longer meet the development requirements of the intelligent grid. Signal digitization is the premise and inevitable trend of building a smart grid. At present, domestic intelligent substations have widely used optical fiber as a means of signal transmission, and the technology is relatively mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R22/06G01R35/04
Inventor 王晓波
Owner 南通能达电力科技有限公司
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