Method for obtaining energy loss analysis parameter answer value of furnace of thermal power set

Abstract

The invention discloses a method for obtaining the energy loss analysis parameter answer value of a furnace of a thermal power set, which comprises the following steps of: building a furnace operation characteristic neural network teaching model with a neural network technology according to furnace operation history working condition data; optimizing the air distribution coal distribution combustion operation parameter of each history working condition of the furnace by taking the highest furnace efficiency as an optimal target through a genetic algorithm optimization technology according to the model; comparing the air distribution coal distribution combustion operation parameter of each history working condition with the corresponding optimizing value, and if the difference therebetween is within a given range, marking the corresponding working condition as an 'optimization working condition'; building a computation model of the exhaust gas temperature, the exhaust gas oxygen quantity and the fly ash carbon content answer value of the furnace by taking the history working condition data which is marked as the 'optimization working condition' as a sample; and being capable of computing the exhaust gas temperature, the exhaust gas oxygen quantity and the fly ash carbon content answer value of the furnace under the conditions of different loads and different coal qualities through the computation model. The method is more reasonable.

Description

technical field [0001] The invention relates to a method for obtaining the expected value of a thermal power unit boiler energy loss analysis parameter, and belongs to the field of thermal power unit operation optimization. Background technique [0002] Energy loss analysis is an important technology for thermal power unit operation optimization. Energy loss analysis is to compare some important operating parameters of the unit with their expected values ​​(best values) under each operating condition of the unit, and calculate the energy loss caused by each operating parameter not reaching its expected value. provided to the operator. According to the energy loss of each operating parameter, the operator can identify the main reason for the performance degradation of the unit, and then take measures to optimize the operation of the unit. Therefore, the key to energy loss analysis is the determination of the attainable values ​​of each operating parameter of the unit. [0...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for obtaining the expected value of the boiler energy loss analysis parameter of a thermal power unit, so as to solve the problem that the determination of the expected value of the boiler energy loss analysis parameter is unreasonable and affects the rationality and reliability of the boiler energy loss analysis result.

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