A Power Quality Disturbance Identification Method Using Time-Domain Compression and Multi-resolution Fast S-Transform Feature Extraction

A power quality disturbance, multi-resolution technology, applied in character and pattern recognition, data processing applications, special data processing applications, etc., can solve the problems of increasing network structure complexity, large data storage space, and high space complexity, achieving The effect of reducing space storage requirements and storage costs, storage space reduction, and time-domain dimension reduction
CN107832777BActive Publication Date: 2021-01-26罗仪科技(上海)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
罗仪科技(上海)有限公司
Publication Date
2021-01-26

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Abstract

The present invention provides a power quality disturbance recognition method using time-domain compression, multi-resolution fast S-transform feature extraction, which is applied to the analysis and research of power quality disturbance signals, and is characterized in that it includes simulation of power quality disturbance signals, and multiple disturbance signals Resolution fast S-transform processing, on the premise of determining the characteristics, the information required for the calculation of the windowed Fourier transform inverse transformation results of each main frequency point in the fast S-transform process is retained, and the intermediate matrix is ​​constructed, which is effective for the extraction of the intermediate matrix Features build feature vectors for classifier construction. It has the advantages of being scientific and reasonable, strong applicability, good effect, and being able to complete identification of complex power quality disturbance signals.
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Description

technical field

[0001] The invention is a power quality disturbance identification method using Time-domain Compression Multiresolution Fast S-transform (TCMFST) feature extraction, which is applied to the analysis and research of power quality disturbance signals. Background technique

[0002] With the concept of sustainable development and low carbon, the scale of new energy power generation continues to expand, the grid connection of new energy power generation and the application of a large number of power electronic equipment will affect the power quality of the power grid (Power Quality, PQ), in science and technology and industry With the rapid development of production, the attention to the quality of power supply is increasing. Therefore, it is necessary to carry out in-depth monitoring and analysis of power quality, and the massive power quality data collected by a large number of monitoring points puts forward higher requirements for the power quality signal classi...

Claims

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