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Hydropower unit health evaluation method

A technology for hydropower unit and health assessment, which is applied in engine testing, machine/structural component testing, and measuring devices, etc. It can solve problems such as the complexity of faults, the lack of fault samples, and the inability of the operating state of hydropower units to meet on-site needs. Satisfy the effect of real-time and good practicability

Inactive Publication Date: 2018-08-07
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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AI Technical Summary

Problems solved by technology

[0003] At present, there are few studies on the operating status of hydroelectric units, and the main research direction is fault diagnosis technology. However, due to the complexity of faults and the lack of fault samples, the research on the operating status of hydroelectric units cannot meet the needs of the field.

Method used

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Examples

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Embodiment

[0049] The on-site actual state monitoring data of a hydroelectric unit in a hydropower station is studied to verify the effectiveness of the hydroelectric unit health assessment method considering the correlation of state parameters in the present invention. The Y-direction swing (that is, the radial vibration of the major axis) data of the hydroelectric unit is selected as the research object. The specific analysis steps are:

[0050] 1) Analysis of unit vibration characteristics.

[0051] Such as figure 2 As shown, the actual measured data of the Y-direction swing peak-to-peak value of the upper guide of the hydroelectric unit from 16:09 on November 22, 2008 to 3:01 on November 30, 2008 is given. It can be seen from the figure that due to the structure of the hydroelectric unit Complexity and frequent switching of working conditions make the time series of vibration parameters very complicated, and it is difficult to accurately analyze the actual operating state of the h...

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Abstract

The invention relates to a hydropower unit health evaluation method. The method is characterized by comprising steps that 1), real-time online monitoring data of a hydropower unit in the present stateis acquired, and vibration characteristics of the hydropower unit are analyzed; 2), real-time online monitoring data of the hydropower unit in a healthy state under different operation conditions isacquired, correlation between the different operation conditions and state parameters of the hydropower unit in the healthy state is analyzed, and a vibration health standard model of the hydropower unit is established; and 3), according to the established vibration health standard model of the hydropower unit and the real-time online monitoring data of the hydropower unit, health state evaluationof the hydropower unit in the present state is carried out, and the health state of the hydropower unit under the present state is acquired. The method is advantaged in that visual property and strong timeliness are realized, and the method can be widely applied to the operation guarantee field of the hydropower unit.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring and state evaluation, in particular to a health evaluation method of a hydroelectric unit. Background technique [0002] With the increase of running time, the operating state of the hydropower unit gradually evolves from the optimal healthy state to the degraded performance to the fault state. Quickly and effectively determine the real status of hydroelectric units, discover abnormalities of hydroelectric units in time, and arrange maintenance reasonably, which is an important issue for the transformation of hydroelectric units from planned maintenance to condition-based maintenance. Therefore, it is necessary to study the online monitoring data of hydropower units in depth and dig out the real and available status information of hydropower units. [0003] At present, there are few studies on the operating status of hydroelectric units, and the main research direction is fault diagnos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/02G06Q10/00G06Q50/06
CPCG01M15/02G06Q10/20G06Q50/06
Inventor 安学利潘罗平曹登峰
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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