Method of detecting local discharge signal in electric power equipment

A technology for power equipment and discharge signals, which is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc. It can solve problems such as difficult selection, unstable filter filtering effect, and increased steady-state error
CN100495054CActive Publication Date: 2009-06-03BAOSHAN IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
BAOSHAN IRON & STEEL CO LTD
Publication Date
2009-06-03

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Abstract

The method of detecting local discharge signal in electric power equipment includes the empirical mode dissociation of acquired original signal, the adaptive filtering treatment on the obtained inherent mode functions of different orders, and final signal reconstruction with the treated new inherent mode functions to obtain the useful local discharge signal with inhibited narrow band interference signal. The method has high adaptive filtering effect and easy parameter setting, and may be used widely in the denoising treatment of local discharge signal in large electric power equipment and similar equipment.
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Description

technical field

[0001] The present invention relates to the extraction of useful signals, more specifically to a detection method for partial discharge signals of power equipment, the method is based on empirical mode decomposition and adaptive filtering narrow-band interference suppression method, mainly used for partial discharge of power equipment In the monitoring system, it also has a wide range of application prospects in various military or civilian monitoring systems. technical background

[0002] Detecting partial discharge is an important means of monitoring the insulation state of large-scale power equipment, and has attracted the attention of many people in the industry in recent years. When these large power equipments are in operation, partial discharge is often submerged in noise due to the existence of a large number of on-site disturbances. In order to obtain effective partial discharge signals, noise interference must be suppressed. Among the numerous inte...

Claims

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