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Remote diagnosis and decision method for running state of hydroelectric generating set

A technology of running status and remote diagnosis, applied in engine testing, electrical digital data processing, testing of machine/structural components, etc., can solve problems such as early commissioning time, imperfect remote monitoring technology for unit stability, and potential safety hazards. Achieve the effect of ensuring normal operation and improving the efficiency of troubleshooting

Active Publication Date: 2015-02-04
STATE GRID CORP OF CHINA +2
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  • Summary
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, some hydropower plants were put into operation earlier, and the equipment and metal structures of the units were aging. During the "Eleventh Five-Year Plan" period, many defects and potential safety hazards were discovered.
The safety hazards that led to the "Sayan" accident are still prevalent in various hydropower plants
In particular, remote monitoring technologies such as unit stability and adjustment system operating status are still not perfect, and remote real-time diagnosis and decision-making technologies and methods are lacking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The inventive method comprises the steps:

[0020] Step 1: Establish a basic database including data normal values ​​and alarm values ​​of each part of the unit to reflect the operating status;

[0021] Step 2: Establish a fault database including the corresponding fault causes when the data reflecting the operating status of each part of the unit is abnormal;

[0022] Step 3: Use the three types of mode analysis methods of unit start-up mode, operation mode and shutdown mode, specific frequency band analysis method and trend analysis method to compare the collected data of the reaction operation status of each part of the unit with the values ​​in the basic database, If it is within the value range, it will be diagnosed as normal, if it exceeds the value range, it will be matched in the fault database, and if the matching is successful, it will be diagnosed as the corresponding fault.

[0023] In Step 3, among the three types of mode analysis methods of unit start-up ...

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PUM

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Abstract

The invention discloses a remote diagnosis and decision method for the running state of a hydroelectric generating set. The method comprises the following steps: building a remote diagnosis and decision basic repository and fault database of the running state of the hydroelectric generating set; remotely monitoring and acquiring the important parameters such as the running vibration, amplitude and pressure pulsation of the hydroelectric generating set, a collision signal of an underwater portion of a top cover, the static feature, dynamic feature, functional index, switch-on / off time and rule of a speed regulating control system, and the starting-stopping time of an oil pump of an oil pressing groove; remotely diagnosing and deciding the running stability of the set by adopting the methods of trend analysis, specific frequency band collision analysis, specific index comparison, switch-on / off time and action rule analysis, the starting-stopping time analysis of the oil pump of the oil pressing groove and the like.

Description

technical field [0001] The invention belongs to the technical field of hydroelectric power generation equipment, and in particular relates to a method for remote diagnosis and decision-making of the operation state of a hydroelectric unit. Background technique [0002] The safe and stable operation of hydroelectric generating units is related to the safety of hydropower plants and social public safety. On August 17, 2009, the largest hydropower station built in Russia - the Sayano-Shushenskaya Hydropower Station had an unprecedented major accident in the history of hydropower at home and abroad. A total of 75 people were killed, 13 people were missing, the unit and some workshops were destroyed, and the loss of power station equipment and facilities was estimated to be about 7 billion rubles. The impact is immeasurable. According to the Russian accident investigation report and the analysis of domestic experts, the accident was mainly caused by comprehensive reasons such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G01M15/00
Inventor 唐卫平
Owner STATE GRID CORP OF CHINA
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