Device and method for detecting micro grid harmonic wave and inter-harmonics based on STM32F107VCT6

A technology of harmonic detection and micro-grid, applied in the device for detecting harmonic and inter-harmonic of micro-grid system, based on STM32F107VCT6 in the field of micro-grid harmonic and inter-harmonic detection device, which can solve the complex expansion of RAM and ROM hardware circuits , the problem of slow operation speed, etc.

Inactive Publication Date: 2013-08-21
NANJING INST OF TECH
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Problems solved by technology

[0008] Aiming at the problems of slow computing speed, need to expand RAM and ROM, and complex hardware circuits in the detection of micro-grid harmonics in the prior art, the present invention provides a micro-grid ha

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  • Device and method for detecting micro grid harmonic wave and inter-harmonics based on STM32F107VCT6

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Embodiment Construction

[0064] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0065] as attached figure 1 The working flow of the device is: the present invention adopts the following technical solutions.

[0066] A micro-grid harmonic and inter-harmonic detection device based on STM32F107VCT6, including a signal acquisition module, a signal processing module, and a signal display output module. The signal acquisition module uses a Hall voltage and current sensor as the acquisition of the three-phase voltage and current of the power grid The signal processing module includes a voltage and current conversion circuit, an anti-aliasing filter circuit, a level adjustment circuit, a core processor STM32F107VCT6 and a peripheral circuit of the processor; the acquisition end of the Hall voltage and current sensor of the signal acquisition module is connected to the power grid, and the output The terminal is connected to the signal processing module,...

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Abstract

The invention discloses a device and method for detecting a micro grid harmonic wave and inter-harmonics based on STM32F107VCT6, and belongs to the technical field of power quality detection. The device comprises a signal acquisition module, a signal processing module and a signal display output module. A Hall voltage current sensor is adopted in the signal acquisition module to serve as a collector for collecting power grid three-phase voltage electric current. The signal processing module comprises a switching circuit of voltage and current, an anti-aliasing filter circuit, an electrical level regulator circuit, a core processor STM32F107VCT6 and a processor peripheral circuit. The output end of the electrical level regulator circuit is connected with the input end of an A/D converter of the core processor STM32F107VCT6. The method comprises the processes of collection and processing of signals. The device and method meets the requirement of computational accuracy and computational speed, and meets flexibility and convenience of the structure.

Description

technical field [0001] The present invention belongs to the technical field of power quality detection, in particular, relates to a device and detection method capable of detecting harmonics and inter-harmonics of a micro-grid system, and more specifically, relates to a micro-grid harmonic and inter-harmonic based on STM32F107VCT6 Harmonic detection device and detection method. Background technique [0002] At present, most of the known harmonic detection devices are aimed at large power grids, and mostly detect harmonics, and there are not many detection devices for inter-harmonics. The current IEC6100-4-7 standard and most existing harmonic detection devices use FFT (Fast Fourier Transform, Fast Fourier Transform) algorithm for inter-harmonic detection. However, the traditional FFT algorithm is relatively accurate for detecting integer harmonics, but when there are a large number of non-integer harmonics in the power grid, the algorithm will have large errors and even fai...

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Application Information

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IPC IPC(8): G01R23/167
Inventor 张亮安薇薇韩林顾阳水恒华
Owner NANJING INST OF TECH
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