Dynamical simulator for abnormal structure change fault of transformer

Abstract

The invention provides a dynamical simulator for an abnormal structure change fault of a transformer. A transformer body, an iron core arranged in the transformer body and windings wound around a column of the iron core are included, the top of the transformer body is provided with three groups of high-voltage bushings, the three groups of high-voltage bushings are connected with the windings in the transformer body respectively, the iron core includes an upper part of silicon steel plates and a lower part of silicon steel plates, the lower part of an E-shaped structure is used to accommodate three-phase windings, the upper part is of a linear structure, a yoke on the iron core is formed by laminating the silicon steel plates, the two ends of the yoke are provided with upper clamping pieces, the yoke on the iron core and the upper clamping pieces are fastened to form an integral structure via an axial pull bar of the upper clamping pieces, each winding is of a three-segment structure, and every two segments are connected via a cold pressing joint. The dynamical simulator can simulate different fault degrees accurately, and integrate different diagnosis results to provide comprehensive data and theory support for a decision maker and further to provide basis for diagnosis on the abnormal structure change fault of the transformer.

Description

technical field [0001] The invention relates to the technical field of transformer dynamic simulation, in particular to a dynamic simulation device for transformer structural abnormality fault. Background technique [0002] The power transformer is one of the most important equipment in the power system. The health status of the transformer is related to the safe and stable operation of the power system. With the increase in the scale and capacity of my country's power system, the accident rate of power transformers is also increasing. Diagnosing the fault of the transformer and determining the health status of the transformer is conducive to ensuring the reliability of the power supply of the power system. [0003] Structural failure is one of the main causes of damage to power transformers. Structural fault diagnosis of transformers after transportation or short-circuit shocks can ensure safe and stable operation of transformers. The current transformer structural fault...

AI Technical Summary

Problems solved by technology

At present, the structural fault diagnosis methods of transformers generally have shortcomings such as low accuracy and poor correspondence with the actual scene.

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