Electric power waveform compression algorithm

A compression algorithm and waveform technology, which is applied in the direction of measuring electricity, electrical components, measuring electrical variables, etc., can solve the problems of unable to provide support for power system research and analysis, and small increments of adjacent sampling points

Inactive Publication Date: 2020-10-13
HEBEI XUHUI ELECTRIC
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Problems solved by technology

However, since the operating frequency of the power system is relatively fixed, and the sampling rate of general wave recording equipment is much higher than the operating frequency of the system, the sampling resolution is generally 12bit to 24bit, and the increm...

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  • Electric power waveform compression algorithm
  • Electric power waveform compression algorithm
  • Electric power waveform compression algorithm

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Embodiment Construction

[0016] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments and accompanying drawings.

[0017] The power waveform compression algorithm in the present invention is suitable for data processing of power waveforms, and the flow chart of the compression algorithm is as follows figure 1 As shown, it specifically includes the following steps.

[0018] A. Perform noise reduction processing on the collected analog data according to the set cycle. In the present invention, the method of adding an active low-pass filter to the analog quantity acquisition hardware circuit is used to perform noise reduction processing on the collected analog quantity data.

[0019] B. Perform limiting average filtering preprocessing on the analog quantity after noise reduction processing to form a new sampling value. ...

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Abstract

The invention discloses an electric power waveform compression algorithm, which specifically comprises the following steps: performing noise reduction processing on acquired analog quantity data according to a set period, and performing filtering preprocessing on the analog quantity subjected to the noise reduction processing to form a new sampling value; performing incremental calculation on thenew sampling value and an old sampling value obtained in a previous sampling period until a minimum digit data sequence is obtained, and the storing the minimum digit data sequence; and performing later compression by adopting a conventional compression algorithm. According to the invention, a higher compression ratio is achieved through organic combination of an incremental computation compression algorithm and a traditional compression algorithm; under the condition of steady-state power waveforms, the compression ratio can reach below 25%, power waveform data not less than one month can becontinuously recorded and stored in combination with the size of the storage module, and data support is provided for research and analysis of a power system.

Description

technical field [0001] The invention relates to the technical field of data processing of power system operating equipment, in particular to a method for processing power waveform data. Background technique [0002] Fault diagnosis, power quality analysis, and grid operation status research during power system operation all rely on power waveform recording data, and the acquisition of power waveforms is usually completed by wave recording equipment. However, since the operating frequency of the power system is relatively fixed, and the sampling rate of general wave recording equipment is much higher than the operating frequency of the system, the sampling resolution is generally 12bit to 24bit, and the increment of adjacent sampling points is small, which makes the existing Some wave recording equipment can only record short-term data at the time of failure or store waveform data in a short period of time, which cannot provide support for power system research and analysis. ...

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Application Information

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IPC IPC(8): G01R31/08H03M7/30
CPCG01R31/086G01R31/088H03M7/70
Inventor 董锁英吴洪伟高志辉张菡洁
Owner HEBEI XUHUI ELECTRIC
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