Power signal filtering method in energy decomposition

A power signal and energy decomposition technology, applied in the electric power field, can solve the problem that the low-pass filter and the median filter cannot effectively filter out the impulse noise of the power signal, and achieve the effect of filtering out the impulse noise and fast detection.

Active Publication Date: 2019-01-18
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 filtering method in energy 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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  • Power signal filtering method in energy decomposition
  • Power signal filtering method in energy decomposition
  • Power signal filtering method in energy decomposition

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Embodiment Construction

[0052] 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.

[0053] Aiming at the problem that the existing low-pass filter and median filter cannot effectively filter the impulse noise in the power signal, the present invention provides a power signal filtering method in energy decomposition.

[0054] Such as image 3 As shown, the power signal filtering method in energy decomposition provided by the embodiment of the present invention

[0055] S101, collecting a power signal sequence and converting it into a two-dimensional signal;

[0056] S102, decomposing the two-dimensional signal to obtain a power signal decomposition coefficient;

[0057] S103. Determine a power signal decomposition coefficient threshold according to the obtained power signal decomposition coefficient;

[0058] S104, judging whether the...

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Abstract

The invention provides a power signal filtering method in energy decomposition, which can effectively filter impulse noise in the power signal. The method comprises the following steps of: acquiring apower signal sequence and converting the power signal sequence into a two-dimensional signal; Decomposing the two-dimensional signal to obtain the decomposition coefficient of the power signal; Determining a threshold value of the power signal decomposition coefficient according to the obtained power signal decomposition coefficient; Judging whether the amplitude of the obtained power signal decomposition coefficient is greater than or equal to the threshold value of the power signal decomposition coefficient, if yes, setting the decomposition coefficient of the filtered noise to be the obtained power signal decomposition coefficient, otherwise, setting the decomposition coefficient of the filtered noise to be a preset value; generating A noise-free power signal sequence by using the obtained decomposition coefficients of the filtered noise. The present invention relates to the field of electric power.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a power signal filtering method in energy decomposition. Background technique [0002] 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 same time, using the electricity consumpt...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06F2218/04
Inventor 翟明岳
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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