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Adaptive filter method for power signal in load decomposition

An adaptive filtering and power signal technology, applied in the electric power field, can solve the problem that the low-pass filter and median filter cannot effectively filter out the power signal pulse noise, etc., and achieve the effect of fast filtering

Inactive Publication Date: 2018-11-30
GUANGDONG UNIV OF PETROCHEMICAL TECH
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a power signal adaptive filtering method in load decomposition to solve the problem that the low-pass filter and median filter in the prior art cannot effectively filter out the impulse noise in the power signal

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  • Adaptive filter method for power signal in load decomposition
  • Adaptive filter method for power signal in load decomposition
  • Adaptive filter method for power signal in load decomposition

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Embodiment Construction

[0047] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0048] Aiming at the problem that the existing low-pass filter and median filter cannot effectively filter out the impulse noise in the power signal, the invention provides an adaptive filtering method for the power signal in load decomposition.

[0049] Such as image 3 As shown, the power signal adaptive filtering method in load decomposition provided by the embodiment of the present invention

[0050] S101, collecting a power signal sequence and converting it into a power matrix;

[0051] S102. Perform a row-by-row Fourier transform on the power matrix;

[0052] S103. Based on the obtained row Fourier transform result, iteratively calculate the power signal filter factor, and correct the obtained row Fourier transform result;

[0053] S104, judging w...

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Abstract

The invention provides an adaptive filter method for a power signal in load decomposition, so as to effectively filter out pulse noise in the power signal. The method comprises the following steps: acquiring a power signal sequence, and converting the power signal sequence into a power matrix; performing row Fourier transformation on the power matrix; iteratively calculating a power signal filterfactor based on an obtained row Fourier transformation result, and correcting the obtained row Fourier transformation result; judging whether the current number of times of iterations is equal to thelength of the power signal sequence or not; and if YES, performing row inverse Fourier transformation on a current obtained correction result to generate a noise-filtered power signal sequence. The invention relates to the field of power.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a power signal adaptive filtering method in load decomposition. Background technique [0002] Load decomposition (also called: energy decomposition) is to decompose the power value read at the meter into the power value consumed by a single load, such as figure 1 As shown, among them, figure 1 The data in is simulated data, not measured data. [0003] With the development of smart grid, the analysis of household electricity load becomes more and more important. Through the analysis of electricity load, household users can obtain the electricity consumption information of each electrical appliance in a timely manner, as well as a detailed list of electricity charges; the power department can obtain more detailed user electricity consumption information, and can improve the accuracy of electricity load forecasting, Provide a basis for overall planning for the power sector. At the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R11/00
CPCG01R11/00
Inventor 翟明岳
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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