State monitoring and fault diagnosis system of gas turbine generating unit and use method of state monitoring and fault diagnosis system

Abstract

The invention discloses a state monitoring and fault diagnosis system of a gas turbine generating unit and a use method of the state monitoring and fault diagnosis system. The state monitoring and fault diagnosis system comprises a vibration monitoring module and a network module of a control system of the unit, a signal acquisition module and a computer which is provided with a LabVIEW platform, wherein a state performance signal is transmitted to the computer by the network module; the signal acquisition device is provided with a signal acquisition circuit and a signal processing circuit; a vibration signal output by the vibration monitoring module is acquired by the signal acquisition circuit, is processed by the signal processing circuit and is then transmitted to the computer; data acquisition is performed after an acquisition channel of the signal acquisition circuit is set by the LabVIEW platform; the LabVIEW platform comprises a real-time analysis module, an off-line analysis module and a fault diagnosis module; on-line monitoring and analysis are performed on the state performance signal and the vibration signal by the real-time analysis module; off-line analysis is performed on recorded data by the off-line analysis module; and fault diagnosis is performed on the unit by the fault diagnosis module. The state monitoring and fault diagnosis system is easy to operate and high in diagnosis accuracy and efficiency and can be applied to state monitoring and diagnosis of each turbine generating unit.

Description

technical field [0001] The invention relates to a state monitoring and fault diagnosis system and its use method, in particular to a state monitoring and fault diagnosis system for a gas turbine generating set used on an ocean platform and its use method. Background technique [0002] Gas turbine generator set is a generator set driven by a gas turbine to drive a motor. Gas turbines have been used more and more in the fields of aviation, navigation, and power generation due to their advantages of large power, small size, high efficiency, and low exhaust gas pollution. However, The harsh working conditions and complex structure make the gas turbine a sensitive and frequent part of the fault in the whole power generation system. Therefore, it is particularly necessary to carry out condition monitoring and fault diagnosis on the gas turbine. Vibration parameters are often used as one of the indicators for gas turbine alarm and emergency shutdown. It contains a large amount of o...

AI Technical Summary

Problems solved by technology

[0003] Existing condition monitoring and control systems are generally aimed at gas turbines rather than the entire gas turbine generator set, and the fault diagnosis is generally only based on the state performance signal or vibration signal, but does not make full use of the vibration signal and combine the state performance signal and The fusion of vibration signals leads to low diagnostic accuracy and diagnostic efficiency

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