Fuzzy diagnosis method for water vapor chemical fault of thermal power generating unit

Abstract

The invention relates to a fuzzy diagnosis method for the water vapor chemical fault of a thermal power generating unit. The fuzzy diagnosis method comprises: according to the type of a thermal power generating unit water vapor chemical fault to be diagnosed, determining fuzzy diagnosis monitoring parameters so as to be used as fuzzy variables; according to the determined fuzzy variables, constructing a fuzzy rule for the thermal power generating unit water vapor chemical fault; according to the constructed fuzzy rule, determining fuzzy relation matrixes corresponding to each fuzzy variable; and recording the specific values of the fuzzy variables, and carrying out fuzzy diagnosis inference according to the fuzzy relation matrixes so as to obtain the diagnosis result. Compared to the method in the prior art, the method of the present invention has advantages of fast diagnosis, accurate diagnosis result, easy achieving, and the like.

Description

technical field [0001] The invention relates to the field of fault diagnosis of thermal power generating sets, in particular to a fuzzy diagnosis method for water vapor chemical faults of thermal power generating sets. Background technique [0002] In the thermal system of a thermal power plant, water and steam are used as working media to complete energy transfer and conversion. Water absorbs the chemical energy produced by fuel combustion in the boiler and becomes steam with a certain amount of heat energy; steam works in adiabatic expansion in the steam turbine, converting heat energy into mechanical energy; the high-speed rotation of the steam turbine drives the generator to run, and further converts mechanical energy into electrical energy; The overworked low-temperature and low-pressure steam is condensed into water in the condenser, and re-enters the boiler together with the make-up water. The reciprocating circulation of water vapor in the thermal system is thus for...

AI Technical Summary

Problems solved by technology

[0005] In my country, the research on the diagnosis of water vapor chemical faults of thermal power generating units is still not deep enough, and the application level is low. Generally speaking, there are still the following problems: 1. The chemical fault diagnosis of many power plants still relies on the experience of technicians, lacking authority and accuracy

2. How to use a large amount of data more effectively to grasp the actual working conditions more accurately remains to be further studied

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