Motor online fault monitoring system and analysis method thereof

A fault monitoring and monitoring unit technology, which is applied in the direction of motor generator testing, measuring electricity, measuring devices, etc., can solve the problems of labor and material cost, long inspection time, and high professional level of inspection personnel.

Pending Publication Date: 2020-05-22
XIAN TECHNOLOGICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides an online motor fault monitoring system and its analysis method. For the inspection of motor faults in the current industrial production, it basically needs to be inspected by professionals. Long time, labor and material cost, low detection efficiency, etc., the detection system can automatically acquire data, analyze data independently, save data and display online fault analysis results in real time

Method used

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  • Motor online fault monitoring system and analysis method thereof
  • Motor online fault monitoring system and analysis method thereof
  • Motor online fault monitoring system and analysis method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] seefigure 1 The motor online fault monitoring system shown includes multiple voltage sensors, multiple current sensors, data acquisition unit, data transmission unit, power supply unit, operation analysis unit, data analysis result parameter display unit and remote online monitoring unit; The plurality of voltage sensors and the plurality of current sensors are all connected to the data acquisition unit, the power supply unit is connected to the data acquisition unit, the data acquisition unit is connected to the data processing unit through the data transmission unit, and the data processing unit is connected to the data analysis result parameter display unit And remote online monitoring unit.

[0036] The above-mentioned voltage sensor selects the Hall voltage sensor, which has high-frequency response capability and can capture signals with frequency changes of 50KHz and above; select 3-way Hall voltage sensors HCS1, HCS2 and HCS3 to obtain the voltage source informati...

Embodiment 2

[0050] see figure 2 The difference between this embodiment and Embodiment 1 is that in this embodiment, the data transmission unit selects a 5G network to establish a GPRS wireless transceiver unit.

[0051] see image 3 , when using the motor online fault monitoring system, its specific analysis method includes the following steps:

[0052] S1: Use the original digital data collected by the Hall current sensor and Hall voltage sensor, converted by the data acquisition unit, and transmitted by the data transmission unit to extract data that can represent fault information. For the three-phase current data, the time domain waveform is firstly analyzed analyze;

[0053] S2: For the time-domain waveform of phase A current, the N data collected are recorded as Y an , assuming Y' an It is the fundamental wave data of N real-time data fitted; use the minimum mean square error to approximate the signal to be extracted, and calculate Y' an , even if E(e 2 Y )=(Y an -Y' an ) ...

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Abstract

The invention relates to a motor on-line fault monitoring system and an analysis method thereof. The system comprises a plurality of voltage sensors, a plurality of current sensors, a data acquisitionunit, a data transmission unit, a power supply unit, an operation analysis unit, a data analysis result parameter display unit and a remote online monitoring unit. The plurality of voltage sensors and the plurality of current sensors are connected with the data acquisition unit, the power supply unit is connected with the data acquisition unit, the data acquisition unit is connected with the dataprocessing unit through the data transmission unit, and the data processing unit is connected with the data analysis result parameter display unit and the remote online monitoring unit. The inventionprovides a system and a method capable of automatically acquiring data, autonomously analyzing data, storing data and displaying an analysis result in real time, and the problems of high requirementon professional level of inspection personnel, long inspection time, manpower and material resource cost consumption, low detection efficiency and the like are solved.

Description

technical field [0001] The patent of the present invention relates to the field of detection and diagnosis of electrical equipment, in particular to a motor online fault monitoring system and its analysis method. Background technique [0002] With the development of modern industrial technology and the improvement of equipment manufacturing level, as the most important transmission and actuator in the production system, the number of motors is constantly increasing. Whether it can run normally, safely, efficiently and with low consumption during the industrial production and manufacturing process is of great significance to the operation and development of the industry. Motor failure will not only make the load operated by the motor unable to work normally, but may sometimes affect the entire The operation of the production system may even endanger the safety of personnel, cause huge economic losses, and have adverse social impacts. [0003] The current motor fault detectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
CPCG01R31/343
Inventor 高雅朱秦岭李波李小鹏
Owner XIAN TECHNOLOGICAL UNIV
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