Harmonic wave electric energy measuring system based on parameter analysis and control method thereof

An electric energy metering system and parameter analysis technology, applied in the field of signal processing, can solve the problems that electric harmonics cannot be accurately measured, damage the power supply system and the interests of users of non-harmonic sources, etc.

Inactive Publication Date: 2013-05-15
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology

[0004] The present invention aims at the prominent problem that current electric harmonics cannot be accurately measured and charged fairly, so as to damage the interests of the power supply system and non-harmonic source users, and proposes a harmonic electric energy metering system and its control method based on parameter analysis

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  • Harmonic wave electric energy measuring system based on parameter analysis and control method thereof
  • Harmonic wave electric energy measuring system based on parameter analysis and control method thereof
  • Harmonic wave electric energy measuring system based on parameter analysis and control method thereof

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Embodiment Construction

[0055] The technical solutions of the present invention will be described in detail below in conjunction with the drawings and embodiments.

[0056] like figure 1 As shown, the harmonic electric energy metering system based on parameter analysis of the present invention includes four parts: a three-phase grid data acquisition module, a data processing module, a data management module and a peripheral module. Among them, the three-phase power grid data acquisition module includes resistor voltage divider network, TA and resistor network, and ADS8364 chip to realize real-time synchronous sampling of the three-phase voltage and current signals of the grid; the sampled data is sent to the data processing module through the parallel interface; the data processing The module adopts the ADSP-BF533 chip, and the interpolation fast Fourier transform algorithm based on the Blackman window performs spectrum analysis and processing on the current and voltage waveforms, and separates the f...

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Abstract

Disclosed is a harmonic wave electric energy measuring system based on parameter analysis and a control method of the harmonic wave electric energy measuring system based on the parameter analysis. The system comprises a three-phase power grid data collecting module, a data processing module, a data managing module and a periphery module, wherein the three-phase power grid data collecting module is connected with the data processing module through a parallel interface. The data processing module is connected with the data managing module through an asynchronous serial, and the data managing module is directly connected with the periphery module. The harmonic wave electric energy measuring system based on the parameter analysis and the control method of the harmonic wave electric energy measuring system based on the parameter analysis can meet the harmonic wave electric energy measuring requirement, achieve better calculation accuracy than A standard request of GB/T-14549-93, and make up for the defect that a traditional electric energy measuring system can not achieve accurate calculation of the harmonic wave electric energy.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a harmonic electric energy metering system based on parameter analysis and a control method thereof. Background technique [0002] The large increase of nonlinear loads in the power system, especially the wide application of power electronic devices, has caused a large number of high-order harmonics to be generated in the power grid, which has become a public hazard that affects the quality of power energy, and has a great impact on the safe and economical operation of the power system. . Real-time measurement of the harmonic content in the power grid to accurately grasp the actual situation of the harmonics in the power grid is very necessary for preventing and controlling harmonic hazards and maintaining the safe operation of the power grid. [0003] At present, the inductive and electronic energy meters commonly used in power systems cannot accurately measure harmon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R22/10G01R23/16
Inventor 曾博李刚潘俊涛李伟坚韩帅丁志华龙伟杰陈俊朱少波
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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