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A Judgment Method for Abnormality of Motor Stator Current Spectrum Analysis Equipment

A technology of equipment abnormality and motor stator, which is applied in the electrical field, can solve the problem of unsatisfactory judgment of the severity of the abnormality, and achieve the effect of preventing major failures

Active Publication Date: 2021-06-25
HAINAN JINHAI PULP & PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both at home and abroad have correspondingly researched motor voltage and current data processing and analysis methods, but it is not ideal for judging the severity of abnormalities in practical applications

Method used

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  • A Judgment Method for Abnormality of Motor Stator Current Spectrum Analysis Equipment
  • A Judgment Method for Abnormality of Motor Stator Current Spectrum Analysis Equipment
  • A Judgment Method for Abnormality of Motor Stator Current Spectrum Analysis Equipment

Examples

Experimental program
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Effect test

Embodiment

[0026] Such as Figure 1 ~ 4 As shown: a method of determining an abnormality of a motor stator current spectrum analysis device, including the following steps:

[0027] (1) Motor current signal acquisition

[0028] The motor 4 device operates online, using a signal acquisition device to collect data, the signal acquisition device including the current sensor 1 connected to the power line 3 of the motor 4, and the oscilloscope 2 connected to the current sensor 1;

[0029] (2) Whether there is abnormal monitoring

[0030] The oscilloscope 2 is filtered and a Fourier transform pair the acquisition data. It is checked whether the magnitude of the speed of the motor spectrum is higher than the normal amplitude. If it is higher than the normal amplitude, there is an abnormality, and proceeds to step (3);

[0031] (3) Analysis of anomalous type

[0032] According to the motor 4 and the belonging mechanical equipment generates different pass frequencies, the analysis determines the abnorm...

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Abstract

The invention discloses a method for judging the abnormality of a motor stator current spectrum analysis device, comprising the following steps: collecting motor current signals, monitoring whether there is abnormality, analyzing the abnormality type, and judging the abnormality severity. First, collect the motor current signal, confirm that the collected signal points are correct, analyze and confirm whether there is a motor abnormality, and filter the collected signal. Through continuous practice, it is found that the frequency amplitude of the motor abnormality is related to the severity of the motor abnormality. The above judgment method can quickly and accurately analyze the abnormal severity of the electrical equipment online, so as to judge whether an emergency shutdown is required for maintenance, so as to prevent major equipment failures in advance.

Description

Technical field [0001] The present invention relates to the field of electrical technology, and more particularly to a method of determining an abnormality of a motor stator current spectrum analysis device. Background technique [0002] Modern industrial production and our daily life, almost inseparable from various motors. Asynchronous motors are widely used in the production and life of human society due to their simple structure, strong and durable, simple, easy to use, and can be used in a variety of complicated work environments, and is a largest, largest, and most widely used. In actual operation, the failure of asynchronous motors will not only damage the motor itself, but also affect the entire production process, even endanger personal safety, causing huge economic losses and harsh social impacts. Therefore, the normal work of asynchronous motors is significant for ensuring the safety, efficiency, high quality and low power consumption of the production process. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R23/16G01R31/34
CPCG01R23/16G01R31/343
Inventor 董益才
Owner HAINAN JINHAI PULP & PAPER
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