Partial discharge pulse extraction method based on noise reduction clustering

A technology of partial discharge pulse and extraction method, which is applied to computer parts, pattern recognition in signals, instruments, etc., can solve problems such as weak anti-interference ability, improve anti-interference performance, promote popularization and application, and improve signal-to-noise than the effect
CN113221615APending Publication Date: 2021-08-06CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2021-08-06

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Abstract

The invention relates to a partial discharge pulse extraction method based on noise reduction clustering, which is based on a wavelet algorithm and comprises the following steps: collecting an original power generation signal; determining a wavelet decomposition coefficient of each level; extracting the wavelet decomposition coefficient of each level; clustering the extracted wavelet decomposition coefficient pulse segments of each level to obtain sub-sequences of the aliasing pulse sequence, the sub-sequences corresponding to independent signals of different discharge sources or different propagation paths. Based on the diversity and complexity of the current power equipment partial discharge detection environment interference, the signal-to-noise ratio improvement and multi-discharge clustering calculation of the interference signal are realized in real time in the detection process, and the anti-interference performance of the partial discharge detection device is practically improved.
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Description

technical field

[0001] The invention relates to the technical field of partial discharge high-frequency current detection, in particular to a pulse extraction method based on noise reduction clustering. Background technique

[0002] Partial discharge is the main factor leading to insulation degradation, and it is also an important indicator of insulation degradation. It can effectively reflect the latent defects and faults inside the equipment, and is an important indicator for evaluating the insulation status of equipment. Partial discharge has a better detection effect on the early detection of sudden failure of insulators, and has obvious advantages in the detection of insulation defects or failures of power equipment. Therefore, the effective detection of partial discharge signals is of great significance to ensure the safe and stable operation of power equipment.

[0003] The Chinese patent application with publication number CN106771905B discloses a pulse extraction m...

Claims

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