Power station boiler diagnosis expert system and fault diagnosis method thereof

An expert system and fault diagnosis technology, which is applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., and can solve the problems of abnormal furnace conditions that cannot be further judged, complicated relationships, and not very intuitive. Achieve the effect of reducing unplanned downtime of boilers, improving economic efficiency, and improving safety and reliability

Inactive Publication Date: 2018-11-13
HARBIN BOILER
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Problems solved by technology

However, some fault causes are not very intuitive, and the parameters and state variables monitored by the system can reach hundreds or even thousands. It can be said that it is necessary to judge the location of the fault from thousands of measurement parameters, state variables and alarm information. very difficult
There are man

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  • Power station boiler diagnosis expert system and fault diagnosis method thereof

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Embodiment 1

[0017] A power plant boiler diagnostic expert system, comprising: a DCS data acquisition system module for collecting boiler parameters, the DCS data acquisition system module is connected to a real-time database system module, and the real-time database system module is connected to an overrun alarm module , the overrun alarm module is connected with the fault diagnosis module, and the fault diagnosis module is respectively connected with the diagnosis knowledge database module, the fault symptom database module, the knowledge base update module, the fault prediction and diagnosis module, and the user interface module.

[0018] Data acquisition system module: collect various parameters of the boiler through sensors installed on the boiler unit.

[0019] Real-time database system module: used to store real-time data and historical data of various parameters of the boiler unit. It is the primary source of information for troubleshooting.

[0020] Fault symptom database module:...

Embodiment 2

[0028] The fault diagnosis method of the above-mentioned utility boiler diagnosis expert system, this fault diagnosis method comprises three steps:

[0029] (1) Determine the monitoring content and extract the characteristic signal data of the system state. These characteristic signal data are closely related to the state of the system. The state of the system can be effectively identified by the characteristic signal data of the system. The more information contained in the characteristic signal data , then its effective value for fault diagnosis is higher. These characteristic signal data include boiler pressure, temperature, flow and other analog and switch data. Feature signal selection;

[0030] (2) Extract the symptoms of fault causes from the detected characteristic signals, and determine the corresponding status of each information through signal analysis, as the basis for fault diagnosis;

[0031] (3) Diagnose the fault according to the cause and symptoms of the faul...

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Abstract

The invention relates to a power station boiler diagnosis expert system and a fault diagnosis method thereof and aims to solve the problems that currently the operation fault causes of a thermal powerplant are not visual, the number of the parameters and state variables monitored by the system of the thermal power plant can reach hundreds and thousands, and fault position finding from the thousands of measuring parameters, state variables and alarm information is quite difficult. The power station boiler diagnosis expert system comprises a DCS data collecting system module which is mounted ona boiler unit and used for collecting boiler parameters and is characterized in that the DCS data collecting system module is connected with a real-time database system module, the real-time databasesystem module is connected with an overlimit alarm module, the overlimit alarm module is connected with a fault diagnosis module, and the fault diagnosis module is connected with a diagnosis knowledge database module, a fault symptom database module, a knowledge database updating module, a fault predicting diagnosis module and a user interface module. The power station boiler diagnosis expert system is applicable to power station boiler diagnosis.

Description

Technical field: [0001] The invention relates to a power plant boiler diagnosis expert system and a fault diagnosis method thereof. Background technique: [0002] At present, the diagnosis of operating faults in thermal power plants mainly depends on the analysis of some observed parameters during the operation of the equipment by the operators, and the explanation of the causes of the faults based on experience. Therefore, the correctness of the fault diagnosis largely depends on the experience of the operators. judge. However, some fault causes are not very intuitive, and the parameters and state variables monitored by the system can reach hundreds or even thousands. It can be said that it is necessary to judge the location of the fault from thousands of measurement parameters, state variables and alarm information. very difficult. There are many factors that affect the furnace condition of the boiler, and the relationship between the factors is also very complicated. It...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/024
Inventor 张彦军王凤君于强黄莺孙浩孟晓冬马国航
Owner HARBIN BOILER
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