Automatic diagnosis method for full-working-condition vibration fault of turboset and computer readable medium

Abstract

The invention relates to an automatic diagnosis method for a full-working-condition vibration fault of a turboset and a computer readable medium. The automatic diagnosis method comprises the following steps: step 1, establishing a full-working-condition database; 2, vibration data and operation parameter data during operation of the turboset are monitored in real time; 3, if the difference value between the vibration data and the data in the all-condition database exceeds a preset threshold value, executing the step 4; 4, the vibration abnormity occurrence position, the state of the steam turbine set when vibration abnormity occurs and the characteristic parameters of the position in the current state are sequentially determined; and step 5, according to the characteristic parameters determined in the step 4, comparing the parameter values collected in real time with the parameter values in the full working condition database to obtain a fault diagnosis result. Compared with the prior art, the method has the advantages that real-time monitoring of the vibration parameters and the operation parameters of the turboset under all working conditions can be effectively achieved, and combined diagnosis is conducted in combination with the operation parameters when a vibration fault occurs.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis of a steam turbine unit, in particular to a method for automatic diagnosis of vibration faults under all working conditions of a steam turbine unit and a computer readable medium. Background technique [0002] The steam turbine is one of the most important equipments in power generation enterprises, whether its safe and stable operation affects the safety and economy of the whole generating set. For steam turbines, vibration failure is the most important equipment failure, and timely and reasonable handling of steam turbine vibration failures is an important guarantee for safe and stable production of power plants. [0003] At present, in some power plants, the analysis of vibration faults of steam turbines is only focused on the vibration fault itself, while ignoring the deep-seated causes of vibration. For example, the most common vibration fault component of steam turbines is the 1-fold...

AI Technical Summary

Problems solved by technology

[0003] At present, in some power plants, the analysis of vibration faults of steam turbines is only focused on the vibration fault itself, while ignoring the deep-seated causes of vibration. For example, the most common vibration fault component of steam turbines is the 1-fold frequency component. It means that there is a mass imbalance problem in the steam turbine, and the most direct way to solve the mass imbalance problem is dynamic balance processing, so some power plants directly carry out dynamic balance processing without specific analysis of the cause of the mass imbalance, and the temporary results may be relatively Ideal, but it is easy to have this kind of problem again later

[0004] For the storage and management of vibration information, since the steam turbine will transmit vibration signals all the time, the amount of information is large, and the vibration data in the monitoring and control equipment of the power plant will be automatically deleted every fixed period, so the running and constant speed of this unit , load process and vibration data under various working conditions and other operating parameters cannot be well preserved, which is not conducive to later vibration analysis

Even though some units have stored data for a long time, they have not been sorted out and utilized, resulting in a waste of resources, which is not conducive to the analysis of vibration faults

Images