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Thermal power plant vapor quality monitoring method and system

A thermal power plant, water vapor technology, applied in the direction of instruments, data processing applications, calculations, etc., can solve problems such as large errors, and achieve the effect of accurate water vapor quality monitoring conclusions

Active Publication Date: 2014-01-29
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0004] Based on this, it is necessary to provide a water vapor quality monitoring method and system for thermal power plants with accurate monitoring results for the problem of relatively large errors in the existing thermal power plant water vapor quality monitoring methods

Method used

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  • Thermal power plant vapor quality monitoring method and system
  • Thermal power plant vapor quality monitoring method and system
  • Thermal power plant vapor quality monitoring method and system

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below according to the drawings and embodiments. It should be understood that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

[0023] Such as figure 1 Shown, a kind of water vapor quality monitoring method of thermal power plant, comprises steps:

[0024] S100: Construct a fault monitoring model, set multiple index measuring points corresponding to the monitoring object, and set a matching weight value for each index measuring point, wherein the multiple index measuring points include chemical index measuring points.

[0025] Different fault monitoring models can be constructed according to the current detected objects and corresponding multiple index measuring points can be set. Multiple index measuring points refer to the measuring poi...

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Abstract

The invention provides a thermal power plant vapor quality monitoring method and system. Through introduction of gray system indexes and combination of a weight adjustment algorithm, a gray system including the weight adjustment algorithm no longer depends on single index measuring points and expert database data for inferring equipment faults, however, other multi-index measuring points are added to serve as characteristic parameters for unified inferential analysis, a gray relational coefficient of set weight values and a parameter sequence is calculated, then an expert system infers and defines calculated relational coefficient weight adjustment value, and a monitoring analysis conclusion is obtained finally to enable fault information covered by vapor quality change to be deeper, so that a thermal power plant vapor quality monitoring conclusion is more accurate.

Description

technical field [0001] The invention relates to the technical field of thermodynamic applications, in particular to a method and system for monitoring water vapor quality in a thermal power plant. Background technique [0002] A thermal power plant, referred to as a thermal power plant, is a factory that uses coal, oil, and natural gas as fuel to produce electric energy. Its basic production process is: the fuel is burned in a boiler to heat water to make steam, and the chemical energy of the fuel is converted into heat. The steam pressure The steam turbine is driven to rotate, the heat energy is converted into mechanical energy, and then the steam turbine drives the generator to rotate, which converts the mechanical energy into electrical energy. [0003] In order to ensure the normal operation of thermal power plants, it is essential to monitor the water vapor quality of thermal power plants. The existing monitoring methods of water vapor quality in thermal power plants ma...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
Inventor 周永言马存仁郑小华冯志刚王建军
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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