Electric energy quality analysis device based on short-distance radio communication technology

Abstract

The invention relates to an electric energy quality analysis device based on a short-distance radio communication technology, and belongs to the technical field of electric energy quality detection. The device comprises an analog signal conditioning circuit, an analog-to-digital converter, a waveform buffer, a digital signal processor, a main controller, a screen display module, a button module, aWIFI module and a storage module; the input end of the analog-to-digital converter is connected with the output end of the analog signal conditioning circuit, and the output end of the analog-to-digital converter is connected with the input end of the waveform buffer; the input end of the digital signal processor is connected with the output end of the waveform buffer, and the output end of the digital signal processor is connected with the input end of the main controller; the main controller is in bidirectional connection with the WIFI module and the storage module; and the screen display module and the button module are electrically connected with the main controller. Via the electric energy quality analysis device, the digital signal processor can analyze harmonic waves conveniently,harmonic analysis errors caused by frequency spectrum leakage are reduced, the accuracy of harmonic analysis is improved, and requirements for informatization can met.

Description

technical field [0001] The invention belongs to the technical field of power quality detection, in particular to a power quality analysis device based on short-distance wireless communication technology. Background technique [0002] With the promotion and development of smart grids and distributed energy systems, power quality issues are becoming more and more prominent and important. The country has successively promulgated GB / T12325-2008 "Power Supply Voltage Allowable Deviation", GB / T15945-2008 "Power System Frequency Deviation", GB / 15543-2008 "Power Quality_Three-phase Voltage Unbalance", GB / T12326-2008 "Power Quality Voltage Fluctuation and Flicker" and other national standards. It can be seen that it is an important decision to respond to the country to accurately and reliably detect the power quality of each link. At present, most power quality monitoring devices are limited by the installation location after being installed on site, so it is inconvenient to view ...

AI Technical Summary

Problems solved by technology

[0003] At present, most power quality monitoring devices use equal time intervals to sample the measured waveform instead of equal period sampling. The equal time interval sampling method has the problem of spectrum leakage when calculating harmonics, resulting in low accuracy of harmonic analysis.

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