Unit electromagnetic vibration diagnosis method and system, computer equipment and storage medium

Abstract

The invention relates to a unit electromagnetic vibration diagnosis method and system, computer equipment and a storage medium. The method comprises the following steps: based on electromagnetic vibration characteristics of a unit, performing data analysis and characteristic extraction on the unit in the startup excitation voltage buildup process, and constructing a state evaluation matrix of electromagnetic vibration; performing principal component analysis on the state evaluation matrix to obtain a monitoring sample space; collecting health sample data of electromagnetic vibration of the unit from a unit operation database, and constructing a health sample space according to the health sample data; comparing and clustering the monitoring sample space and the health sample space, determining the abnormal state of the electromagnetic vibration of the unit, and diagnosing the electromagnetic vibration of the unit according to the abnormal state. According to the embodiment of the invention, grid connection of the sick unit is avoided, and unit safety and stability and power grid safety are guaranteed; meanwhile, real-time monitoring and diagnosis of the electromagnetic vibration state of the unit are achieved, and the labor cost of traditional electromagnetic vibration diagnosis of the unit is reduced.

Description

technical field [0001] The present application relates to the field of electric equipment, in particular to a method, system, computer equipment and storage medium for diagnosing electromagnetic vibration of a unit. Background technique [0002] If there is electromagnetic interference during the operation of the unit, it will produce electromagnetic vibration that affects the safe and stable operation of the unit. In the past, the electromagnetic vibration state monitoring of the unit was mainly through the off-line variable excitation test, and by analyzing the change trend of the unit vibration with the excitation current to determine whether there is an abnormal electromagnetic vibration problem in the unit, but the offline test requires a certain amount of manpower and material resources. Abnormal electromagnetic vibrations during long-term operation cannot be tracked and diagnosed in real time. [0003] With the maturity of the current condition monitoring technology,...

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Problems solved by technology

In the past, the electromagnetic vibration state monitoring of the unit was mainly through the off-line variable excitation test. By analyzing the change trend of the unit vibration with the excitation current, it was judged whether there was an abnormal electromagnetic vibration problem in the unit. However, the offline test required a certain amount of manpower and material resources, and if the unit Abnormal electromagnetic vibration occurs during long-term operation and cannot be tracked and diagnosed in real time

[0003] With the maturity of the current condition monitoring technology, medium and large units are generally equipped with real-time condition monitoring systems, which can monitor and store the unit stability condition monitoring data, but the value of the data obtained by the current condition monitoring system has not been fully tapped and utilized, and There is also a lack of targeted monitoring and analysis models for unit electromagnetic vibration status

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