Online electric energy quality monitoring system based on ARM and FPGA

Abstract

The invention belongs to the technical field of electric energy quality analysis and discloses an online electric energy quality monitoring system based on an ARM and an FPGA. The online electric energy quality monitoring system comprises an electric energy quality analysis meter, a data collection server, a local monitoring terminal and a remote monitor terminal, wherein the electric energy quality analysis meter is connected with the data collection server, and the local monitoring terminal and the remote monitor terminal are respectively connected with the data collection server; the electric energy quality analysis meter comprises a voltage measurement structure, a first filter circuit, a current measurement structure, a second filter circuit, a frequency tracking module, an analog-digital conversion chip, an FPGA chip and an ARM processor; the voltage measurement structure is connected with the analog-digital conversion chip through the first filter circuit; the current measurement structure is connected with the analog-digital conversion chip through the second filter circuit; the analog-digital conversion chip is connected with the FPGA chip; the first filter module is connected with the FPGA chip through the frequency tracking module; and the FPGA chip is connected with the ARM processor.

Description

technical field [0001] The invention relates to the technical field of power quality analysis, in particular to an on-line power quality monitoring system based on ARM and FPGA. Background technique [0002] With the development of power electronics technology, DC transmission and high-power single-phase rectification technology are widely used in industrial sectors and electrical equipment, such as applications on railways, which lead to current waveform distortion and three-phase imbalance. In the power grid, the unbalanced three-phase load and the resonance grounding of the power system will generate negative sequences, and high-power rectification and nonlinear equipment will generate harmonics. Negative sequence and harmonics seriously affect the quality of power supply. [0003] Domestic research on power quality started late. In the 1980s, research institutes began research on harmonics, and then some companies began to devote themselves to the development and resear...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an online power quality monitoring system based on ARM and FPGA, which solves the technical problems of low power quality analysis precision, cumbersome man-machine operation, poor anti-interference ability, low sampling frequency and low data collection efficiency in the prior art

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