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Method and system for steam turbine operation monitoring and fault discrimination based on time series probability

A technology for operation monitoring and fault identification. It is used in gas turbine engine testing, jet engine testing, machine/structural component testing, etc. It can solve problems such as untimely fault detection, small amount of calculation, and missing alarms, so as to avoid false alarms. , the effect of small calculation and strong adaptability

Active Publication Date: 2021-11-05
SHANDONG UNIV
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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a method and system for steam turbine operation monitoring and fault discrimination based on sequential probability, which can solve the frequent failure alarms, false alarms, The problem of untimely fault discovery, this method has a simple process, a small amount of calculation, and strong practical value

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  • Method and system for steam turbine operation monitoring and fault discrimination based on time series probability
  • Method and system for steam turbine operation monitoring and fault discrimination based on time series probability
  • Method and system for steam turbine operation monitoring and fault discrimination based on time series probability

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Embodiment Construction

[0047] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0048] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the invention clearly states otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, their Indicate the presence of features, steps, operations, means, components and / or combinations thereof;

[0049] For the convenience of description, if the words "up", "down", "left" and "right" appear in th...

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Abstract

The invention discloses a steam turbine operation monitoring and fault discrimination method and system based on time-series probability, comprising the following steps: acquiring steam turbine operation monitoring data, constructing a time-series sample space; calculating the data interval where the sample space satisfies the normal distribution set probability; continuing to obtain the steam turbine Run the monitoring data and judge whether the monitoring data is in the data interval. If the monitoring data is in the data interval, update the time series sample space. If the monitoring data is outside the data interval, judge whether the steam turbine is faulty.

Description

technical field [0001] The invention belongs to the field of steam turbine vibration monitoring, in particular to a method and system for steam turbine operation monitoring and fault discrimination based on time series probability. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] In the long-term monitoring process of steam turbines, it is often difficult to determine the normal operating values ​​of the equipment, because the normal value of the monitoring data of steam turbine operation will be changed by the passage of time and the change of working conditions. The inventors found that the traditional method of fault judgment on steam turbines by setting normal operation indicators has unsatisfactory monitoring results, mainly manifested in frequent fault omissions and false alarms, and the timeliness of fault judgment is difficult to guarantee. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/14G01M7/02
CPCG01M7/022G01M15/14
Inventor 霍睿张泽坤李渊博
Owner SHANDONG UNIV
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