A Blast Furnace Process Monitoring and Fault Diagnosis Method Integrated with pca-ica

Abstract

The invention provides an integrated PCA-ICA blast furnace process monitoring and a fault diagnosis method, and relates to the technical field of blast furnace smelting process monitoring. The methodincludes the following steps that variable selection is assisted and input variable determination of a blast furnace process monitoring mode is determined; monitoring mode is practiced and monitoringof the integrated PCA-ICA is achieved. According to the integrated PCA-ICA blast furnace process monitoring and the fault diagnosis method, the integrated PCA-ICA process monitoring method is adoptedto monitor a blast furnace process, a novel fault identification index is designed, control limits of corresponding fault identification index are provided in the same time, so that an abnormal operation condition of a blast furnace is monitored and anomaly sources are identified, an inner structure of data is sufficiently analyzed, and thus the abnormal operation condition of the blast furnace ismonitored and the anomaly sources are identified to provide a technical support for ensuring persistent and stable operation of the blast furnace.

Description

technical field [0001] The invention relates to the technical field of blast furnace smelting process monitoring, in particular to a blast furnace process monitoring and fault diagnosis method integrating PCA-ICA. Background technique [0002] Blast furnace ironmaking is a complex closed system with multiple variables, strong coupling, and large time delay, which contains many subsystems that are independent and affect each other. Each subsystem is independent in space. For example, the charging subsystem belongs to the upper adjustment of the blast furnace and feeds materials from the top of the blast furnace. The hot blast system belongs to the lower adjustment of the blast furnace. independent in space. However, it also belongs to the blast furnace operation and adjustment component. The blast furnace operator will adjust accordingly according to the influence of the blast furnace condition. For example, the blast furnace temperature fluctuates greatly due to the blast b...

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Problems solved by technology

However, it also belongs to the blast furnace operation and adjustment component. The blast furnace operator will adjust accordingly according to the influence of the blast furnace condition. For example, the humidity of the blast sent into the blast furnace due to the lower tuyere fluctuates greatly, causing the temperature of the blast furnace to go down. It is necessary to add clean coke from the charging system to raise the temperature. , that is to say, there are mutual influences and constraints among different subsystems in order to achieve the goal of stable and direct operation of the blast furnace body, energy saving and consumption reduction

[0003] Due to the limitation of single-variable process monitoring, it is difficult to take into account the coupling relationship between various subsystems, making it difficult to capture the fault symptoms when they appear, and it is difficult to contain the occurrence of faults in time for remedial measures, and it is inevitable to contain the occurrence of faults in time failure loss

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