Vibration multivariate remote early warning method of hydroelectric generating set

A remote early warning and hydroelectric unit technology, applied in measuring devices, electrical digital data processing, measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as hidden dangers in the safe operation of power plants, improve fault handling efficiency, ensure normal operation, and quickly locate The effect of troubleshooting

Inactive Publication Date: 2015-01-28
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0003] The "Sayang" accident exposed serious problems in the current hydropower plant's analysis and early warning of unit vibration overruns that affect safety. Under the background that hydropower plants are increasingly "unattended and few people are on duty", these problems will bring serious problems to the power plant. Safe operation brings great hidden dangers

Method used

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Embodiment Construction

[0016] The invention proposes a multi-variable remote early warning method for hydroelectric unit vibration. The method is as follows:

[0017] Based on the amplitude, frequency, and phase of the vibration signal generated during the operation of the unit, the remote warning of the operation of the unit includes the following steps:

[0018] Step 1: Establish a basic database, and enter the standard value of the vibration of each part of the unit in the basic database, the normal measurement value (not exceeding the standard value) and the set alarm value in the actual operation at present; input the normal frequency value of the vibration of each part in the basic database ;Input the normal phase value of the vibration of each part, these values ​​constitute the basic database.

[0019] Step 2: In the fault database, enter the corresponding fault causes after the vibration amplitude of each part of the unit exceeds the normal measurement value, regulation standard value, and...

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Abstract

The invention discloses a vibration multivariate remote early warning method of a hydroelectric generating set. According to the method, a running vibration basic knowledge base and a fault data base of the hydroelectric generating set are built; running vibration data of the hydroelectric generating set are remotely monitored and obtained; vibration in the running process of the hydroelectric generating set is remotely and early warned, and safe running of the set is maintained. The basic knowledge base comprises the set vibration data normal range and warning range information; the set fault data base comprises possible causes of fault generating, categories of faults and the like. The method has the advantages that the basic knowledge base and the fault data base of the hydroelectric generating set are built, and therefore when vibration data out of the normal range recorded in the basic knowledge base appear in the set, the fault causes can be found through quick comparison of the fault data base; the aim of rapidly positioning and solving the faults of the set is achieved; the fault processing efficiency is improved, and the normal running of the set is effectively ensured.

Description

technical field [0001] The invention belongs to the technical field of hydroelectric power generation equipment, and in particular relates to a multivariable remote early warning method for vibration 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 domestic expert analysis, the accident was mainly caused by excessive vibration of the unit. [0003] The "Sayan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G01H17/00
Inventor 唐卫平
Owner STATE GRID CORP OF CHINA
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