Method of monitoring running status of steam turbine high-pressure cylinder based on parameter relevance intelligent analysis

A technology of intelligent analysis and operating status, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of low failure rate, economic impact, time-consuming and labor-intensive problems of steam turbine generator sets, and achieve high-efficiency steam turbine high-pressure cylinder operation Condition monitoring and early warning, the effect of improving safety and economy

Pending Publication Date: 2018-07-27
ZHEJIANG UNIV
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Problems solved by technology

[0002] Steam turbine is an important equipment in power production. Its equipment structure is complex and its operating environment is harsh. The failure rate of steam turbine generator sets is not low. Once a failure occurs, it will cause great economic impact.
Traditional steam turbine high-pressure cylinder operating state monitoring technology mainly relies on mechanism modeling, but the mechanism modeling method is becoming more and more weak in the case of increasingly complex steam turbine equipment, and once the working conditions change dynamically, it is necessary to re-model, which is not only time-consuming and labor-intensive, There are certain security risks

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  • Method of monitoring running status of steam turbine high-pressure cylinder based on parameter relevance intelligent analysis
  • Method of monitoring running status of steam turbine high-pressure cylinder based on parameter relevance intelligent analysis
  • Method of monitoring running status of steam turbine high-pressure cylinder based on parameter relevance intelligent analysis

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Embodiment Construction

[0041] The steps of the present invention will be described in detail below in conjunction with specific experiments, and their correctness and efficiency will be verified. The experimental data comes from a case of large historical early warning of high-pressure cylinder HP thermal expansion L deviation of a certain unit of Zheneng Energy Group. This case describes in detail the occurrence process of the large abnormality of thermal expansion L deviation, and provides a year of historical data for analysis. The case is roughly described as follows: On December 18, #2 machine HP thermal expansion L was reduced from 25.5mm to 22mm, while thermal expansion R and other related parameter trend graphs did not change significantly. Changes in operating conditions, main body equipment failures, sliding The pin system is jammed, and it is estimated that it is an abnormality caused by the measurement signal. During the time period corresponding to this case, the equipment operated nor...

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Abstract

The invention provides a method of monitoring running status of a steam turbine high-pressure cylinder based on parameter relevance intelligent analysis. The method is applicable to power generation enterprises to monitor running status of a steam turbine high-pressure cylinder and provide early warnings. Historical normal running data of the steam turbine high-pressure cylinder are used as training data to perform modeling based on parameter relevance intelligent analysis so as to estimate real-time data; whether each variable is abnormal is judged according to deviations between actual values and estimated values, so that early warning is achieved. The method has high calculating efficiency and good results accuracy, is well applicable to actual conditions to monitor running status of asteam turbine high-pressure cylinder in a power generation enterprise in real time, and is significant to early warning on anomalies and faults.

Description

technical field [0001] The invention belongs to the field of industrial process state monitoring and early warning, and in particular relates to a method for monitoring the operating state of a high-pressure cylinder of a steam turbine based on intelligent analysis of parameter correlation. Background technique [0002] Steam turbine is an important equipment in power production. Its equipment structure is complex and its operating environment is harsh. The failure rate of steam turbine generator sets is not low. Once a failure occurs, it will cause great economic impact. Traditional steam turbine high-pressure cylinder operating state monitoring technology mainly relies on mechanism modeling, but the mechanism modeling method is becoming more and more weak in the case of increasingly complex steam turbine equipment, and once the working conditions change dynamically, it is necessary to re-model, which is not only time-consuming and labor-intensive, There are also certain se...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20Y02E60/00
Inventor 徐正国张力寰陈积明程鹏孙优贤
Owner ZHEJIANG UNIV
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