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Water turbine fault prognosis method based on on-line monitoring

A technology of fault diagnosis and water turbine, which is applied in the fields of hydroelectric power generation, mechanical equipment, engine components, etc. It can solve the problems that traditional diagnosis methods cannot carry out online diagnosis, and achieve the effect of rich content

Active Publication Date: 2015-12-09
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The invention proposes a hydraulic turbine fault pre-diagnosis method based on online monitoring, which belongs to the real-time diagnostic method of hydraulic turbines, and solves the problem that traditional diagnostic methods cannot perform online diagnosis

Method used

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  • Water turbine fault prognosis method based on on-line monitoring

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Embodiment Construction

[0021] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings. figure 1 Shown is the diagnosis data collection and diagnosis flow chart.

[0022] Step 1. According to the needs of on-site application services, the vibration sample data of each monitoring channel of the hydro-generator set can be collected through the vibration monitoring device, and then the sample data generated by the vibration device can be obtained through a dedicated device and a customized driver, so as to realize various The sample data of the vibration channel is connected to the real-time database, mainly: the vibration value and amplitude of the upper frame of the turbine in the X and Y directions, the swing value and amplitude of the upper guide in the X and Y directions, and the swing of the water guide in the X and Y directions Value and amplitude; and collect other relevant data: speed, unit load, unit load rejection...

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Abstract

Disclosed is a water turbine fault prognosis method based on on-line monitoring. On-line monitoring of the pendulum state of a water turbine set and real-time fault prognosis are realized through collection of a pendulum data sample of the water turbine set, real-time library reading and writing, data preprocessing and making of inference rules. The water turbine fault prognosis method based on on-line monitoring comprises the steps of collecting and displaying real-time data, realizing fault early warning and vibration tread displaying, recording and displaying the diagnosis result, fault analysis and processing suggestions, and storing diagnostic reports.

Description

technical field [0001] The invention relates to the field of industrial control, in particular to a method for diagnosing vibration faults of hydraulic generator sets. Background technique [0002] For a long time, in hydroelectric generating units, mechanical vibration has been a core factor that threatens the safe production and operation of hydroelectric generating units. The vibration of hydropower units is often caused by the joint action of mechanical, electrical and hydraulic factors, and the vibration mechanism is relatively complex. The vibration and swing of the unit will also be caused by design, installation, operation and other reasons, which cannot be completely avoided and eliminated. In short, general vibration will not cause harm to the unit, but if it exceeds the allowable value seriously, especially for a long time, it will have a serious impact on the unit. [0003] At present, most diagnostic techniques are based on expert systems, and it is impossible...

Claims

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Application Information

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IPC IPC(8): F03B11/00
CPCY02E10/20
Inventor 毛成武晋辉李小军潘华刘洪文王江淮高晓光钱华东唐戢群
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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