A method and detection system for diagnosing potential faults of a pump system

Abstract

The present invention provides a method and a detection system for diagnosing potential faults of a pump system, comprising the following steps: establishing a healthy motor-pump model by collecting the voltage and current of the motor; using any phase current and voltage as the healthy motor -pump model input, using the fault indicator FDI as the output of the healthy motor-pump model, training the healthy motor-pump model; according to the voltage and current values ​​per unit time, through the trained healthy The motor-pump model obtains the model estimate per unit time. According to the model estimate per unit time and the fault indicator FDI calculated in the measured signal per unit time, the FDIC value is obtained; according to the FDIC value, it is judged whether there is a fault in the pump system; if the pump If there is a fault in the system, the phase relationship between the harmonic components of the motor current is detected through the high-order spectrum to detect whether the motor is faulty. The invention can judge whether the fault is caused by the motor or the pump by analyzing the current and voltage signals of the motor.

Description

technical field [0001] The invention relates to the field of pump fault detection, in particular to a method and a detection system for diagnosing potential faults of a pump system. Background technique [0002] Pumping station blowdown systems are used to lift wastewater from low elevations to higher elevations to maintain a continuous downhill gradient for receiving wastewater treatment facilities. When the sewage system of the pumping station fails, it may cause serious environmental damage and property loss. To avoid such incidents, sewer system operators employ various monitoring methods to detect component failures so that maintenance actions can be taken before damage occurs. One method that is commonly used is periodic manual inspections. The inspection cycle can range from one or more inspections per day to weekly inspections. In any case, manual inspections involve the travel of each pump station blowdown system, and since most pump station blowdown systems are ...

AI Technical Summary

Problems solved by technology

The fuel pump fault diagnosis system described in this patent has defects in the acquisition of acceleration signals, and there is no detailed description of the specific signal collection points; the method is not very operable for specific actual fault sites; the analysis method is too simple

[0005] The typical practice of high-end monitoring systems is to transmit a large amount of data from each remote pump system to a central location, but if the data collected by remote pump stations is directly processed in advance through specific algorithms, and then the diagnostic results are uploaded to the pump system operation staff, will greatly shorten the data upload volume of the entire pumping station

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