Data mining-based method for analyzing thermal power plant operation index optimal target value

Abstract

The invention relates to a data mining-based method for analyzing a thermal power plant operation index optimal target value. Operation working conditions of a unit are divided according to external working conditions of the unit operation, wherein the working conditions include loads, coal qualities, and circulating water temperatures and the like; on the basis of unit operation massive historical data accumulated by a thermal power plant, by employing a data mining algorithm, operation optimal values of all important parameters on the similar operation working conditions of the unit are found out according to performance indexes including stability, economy and environmental protection and the like; and on the basis of data accumulation and continuous data updating, operation optical values of all operation parameters of the unit are found out and tracked on different working conditions of the unit. And moreover, a concrete method according to which a thermal power plant operation index optimal value is employed as a target value of an evaluation index so as to realize operation evaluation and real-time guidance functions is provided.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to an analysis method for an optimal target value of an operation index of a thermal power plant. Background technique [0002] The analysis and calculation of the target value of the thermal power plant operation index is the most critical step and the most important link of the thermal power plant operation performance appraisal system. Guidance provides the foundation and justification. Without the support of the correct and applicable target value of operating indicators, the operating performance appraisal will lose its meaning. [0003] Each operating index of the unit has an optimal value (target value), which is the best value that the unit can achieve under the current operating conditions, or the ideal value that should be achieved in order to obtain the maximum economic benefits. The closeness between the real-time value of the indicator and the target...

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Problems solved by technology

[0010] There are some problems when using the design reference value, maintenance reference value, and calculation should be achieved as the target value of the unit operation index: when using the design reference value, it is more reasonable and feasible only when the actual operation of the unit is similar to the design situation , otherwise it is inappropriate; when the maintenance reference value is used, the initial effect after maintenance is better, and the target value will change after the running time becomes longer; The result is affected by the model, which is often difficult to achieve in operation

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