A Impulse Noise Filtering Method for Load Switching Event Detection

An impulse noise and event detection technology, applied in electrical devices, measuring devices, vehicle components, etc., can solve the problems of difficult switching event detection, large difference in duration and frequency of occurrence, large instantaneous power of impulse noise, etc. Switching event detection, the method is simple and easy to implement, and the effect of filtering out impulse noise
CN109188069BInactive Publication Date: 2020-08-28GUANGDONG UNIV OF PETROCHEMICAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGDONG UNIV OF PETROCHEMICAL TECH
Publication Date
2020-08-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides a pulse noise filtering method for load switch event detection which is used to solve the problem that a common noise elimination device cannot effectively filter noisewith non-stationary and non-Gaussian features in the prior art. The power signal noise filtering method comprises the steps of: inputting actually measured power signals; performing segmentation on the actually measured power signals and rearranging data to a matrix; transforming the power signal matrix; performing matrix initialization prior to iteration; and performing iteration calculation on the matrix after the initialization is completed to obtain a matrix after pulse noise is filtered, and further converting the matrix to the power signals. Through transformation for the power signal matrix, the sparsity of the power signals is processed to effectively filter the pulse noise in the power signals and achieve high fidelity for the useful power signals, the phase step features of the power signals cannot be damaged, the method is simple and practicable, the computing speed is fast, and therefore, the accurate switch event detection can be performed to perform accurate decompositionfor domestic electricity load.
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Description

technical field

[0001] The invention belongs to the technical field of electric power detection and analysis, and in particular relates to a pulse noise filtering method for load switch event detection. Background technique

[0002] With the development of smart grid, the analysis of household electricity load becomes more and more important. Through the analysis of electricity load, the power department can obtain more detailed user electricity consumption information, improve the accuracy of electricity load forecasting, and provide the basis for overall planning for the power department; household users can obtain the electricity consumption of each appliance in a timely manner information, and a granular list of electricity bills. At present, there are two main methods of electricity load decomposition: intrusive load decomposition and non-intrusive load decomposition. The non-intrusive load decomposition method does not need to install monitoring equipment on the inte...

Claims

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