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Electric energy monitoring front end data acquisition device

A technology for data acquisition and power monitoring, which is applied in the fields of signal processing, power data acquisition, and data communication devices, can solve the problem of not being able to analyze the power grid system perfectly, and be unable to effectively monitor the three-phase unbalance of the power system, and analyze the voltage of system harmonics. Fluctuation and flicker problems, to achieve the effect of quick data analysis

Active Publication Date: 2013-09-25
LIVESINE ELECTRIC SHANGHAI CO LTD
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] In the past, power meters in the industry mainly measured basic data such as voltage and current, and could not effectively monitor power quality data such as three-phase unbalance, system harmonic analysis, voltage fluctuation and flicker in the power system
Therefore, it is impossible to make a complete analysis of the system situation in the power grid.

Method used

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  • Electric energy monitoring front end data acquisition device
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Embodiment

[0028] Such as figure 1 As shown, a front-end data acquisition device for electric energy monitoring includes a power supply module 1 , a data acquisition module 2 , an operational amplifier 3 , an A / D conversion chip 4 , a control module 5 , an Ethernet controller 6 and a high-speed communication bus 7 . The power supply module 1 is respectively connected to the data acquisition module 2, the operational amplifier 3, the A / D conversion chip 4, the control module and the Ethernet controller 6; as figure 2 The data acquisition module 2 includes a signal sensor, a bandpass filter 23 and a PLL phase-locked loop circuit 24, one output end of the signal sensor is connected with the A / D conversion chip 4 through an operational amplifier 3, and the other output end is connected with the bandpass filter circuit 23 Connect to do active filter processing, the output end of the band-pass filter circuit 23 is connected to the PLL phase-locked loop circuit 24, and the PLL phase-locked loo...

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Abstract

The invention relates to an electric energy monitoring front end data acquisition device which comprises a power module, a data acquisition module, an operational amplifier, an A / D conversion chip, a control module, an Ethernet controller and a high-speed communication bus. The data acquisition module collects external electric energy signals, one line of output signals of the data acquisition module is conditioned by the operational amplifier in a signal mode and then is transmitted to the A / D conversion chip, after active power filter processing is conducted on another line of the output signals, the another line of the output signals is directly transmitted to the A / D conversion chip, the A / D conversion chip converts the received signals into digital signals, then the digital signals are transmitted to the control module, the control module conducts packing processing on received data, a data package is transmitted to the Ethernet controller, and finally the data package is issued to a control device through the high-speed communication bus. Compared with the prior art, the electric energy monitoring front end data acquisition device has the advantages of being high in data monitoring precision, strong in adaptive capacity, powerful in function, low in power dissipation, convenient to mount, reliable in data transmission, high in communication speed, capable of achieving high-speed networking and the like.

Description

technical field [0001] The invention relates to an electric energy data acquisition, signal processing and data communication device, in particular to an electric energy monitoring front-end data acquisition device. Background technique [0002] Power Quality, strictly speaking, the main indicators to measure power quality are voltage, frequency and waveform. Generally speaking, it refers to high-quality power supply, including voltage quality, current quality, power supply quality and power quality. It can be defined as: the deviation of voltage, current or frequency that causes electrical equipment to fail or fail to work normally, including frequency deviation, voltage deviation, voltage fluctuation and flicker, three-phase unbalance, temporary or transient overvoltage, Waveform distortion (harmonic), voltage sag, voltage interruption, voltage swell, and power supply continuity, etc. [0003] With the development of the national economy and the improvement of people's l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R22/10
Inventor 舒观澜
Owner LIVESINE ELECTRIC SHANGHAI CO LTD
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