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Digital electric energy meter individually measuring electric energy of fundamental wave and harmonic wave based on LabVIEW DSP module

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4 Author(s)
Jing Li ; North China Electr. Power Univ., Beijing, China ; Yihan Yang ; Wenbin Yu ; Guoqing Zhang

In this paper, the difference between traditional electrical energy metering system and digital electrical energy metering system is presented, the thought and the design method of virtual instrument(VI) technology is introduced, a new development scheme of digital electric energy meter based on Lab VIEW DSP(Digital Signal Processor) module is presented. It takes a floating-point DSP as the core and completes real-time acquisition of currents and voltages with less hardware such as photoelectricity sensors and the A/D converter. While the quasi-synchronous sampling digital filtering adding windows FFT (Fast Fourier Transform) operation, electric parameter calculation and so on, are implemented by software in DSP. The program developed in LabVIEW using LabVIEW DSP module can be downloaded to the DSP hard equipment, with no additional DSP compiler, to be operated easily. It makes full use of LabVIEW DSP module in interaction, usability, integrated resource and data processing ability, thus making the development easier and faster. The developed digital electric energy meter has the performance of multi-functions, small cubage, high-performance and easy expansion, etc.

Published in:

Electricity Distribution, 2008. CICED 2008. China International Conference on

Date of Conference:

10-13 Dec. 2008

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