Electrical smelting furnace for magnesia fault monitoring method based on multi-manifold semi-supervised local-overall situation

Abstract

The invention provides a electrical smelting furnace for magnesia fault monitoring method based on a multi-manifold semi-supervised local-overall situation. The method comprises the steps of acquiring an original data set X during a smelting process of a electrical smelting furnace for magnesia, building a process monitoring model based on multi-manifold semi-supervised local-overall situation maintaining according to the original data set of the smelting process of the electrical smelting furnace for magnesia, acquiring test data x0 during the smelting process of the electrical smelting furnace for magnesia in real time, and carrying out fault type diagnosis on the test data x0 by adopting the process monitoring model based on multi-manifold semi-supervised local-overall situation maintaining. The method provided by the invention takes local and overall structures of data into consideration at the same time, and considers local diversity information among homogeneous data in order to prevent the occurrence of local overfitting, finally builds an optimal object function for multi-manifold semi-supervised fault diagnosis, and has a favorable monitoring effect.

Description

technical field [0001] The invention belongs to the technical field of fault detection and diagnosis, and in particular relates to a multi-manifold semi-supervised local-global fault monitoring method for an electric fused magnesium furnace. Background technique [0002] Fused magnesium furnace belongs to submerged arc furnace equipment, such as figure 1 As shown, it mainly includes three parts: the main body of the fused magnesium furnace, the main circuit equipment and the control equipment. Among them, the body of the fused magnesium furnace is mainly composed of a furnace body, an electrode holder, and an electrode lifting mechanism. The furnace body is composed of a furnace shell and a furnace bottom steel plate. The furnace shell is generally round and slightly tapered. In order to facilitate the shelling of the smelt, a lifting ring is welded on the wall of the furnace shell. The electrode holder is capable of clamping the electrode to facilitate the transmission of...

AI Technical Summary

Problems solved by technology

Among them, the electrodes are too close to the furnace wall of the fused magnesia furnace due to the failure of the electrode actuator or the instability of left and right shaking during the movement of the electrodes, which may cause the furnace body of the fused magnesia furnace to melt, that is, a furnace leakage accident occurs.

[0005] In addition, if a large amount of gas generated under the charge is not released quickly during the heating process, the charge in the furnace will erupt, which will seriously affect the output and quality of products, bring economic losses to the enterprise, and threaten people's lives. Safety

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