A Transformer Winding Deformation Fault Location Detection Method

Abstract

The invention discloses a transformer winding deformation fault location detection method, which is used to solve the technical problem that the transformer fault detection cannot locate the winding deformation fault location. The invention includes the following steps: using a transformer winding deformation fault location detection system to detect the normal transformer and the transformer to be tested, to measure the frequency sweep impedance curves of the normal transformer and the transformer to be tested, to compare the sweep frequency impedance curves of the two, and to compare the results according to the comparison result. Determine whether the transformer under test has a winding deformation fault and calculate and analyze the location area of ​​the winding deformation fault. The invention establishes a transformer winding deformation fault location detection system to connect with the transformer, obtains the frequency sweep impedance curve of the transformer to locate the transformer winding deformation fault, and solves the problem that the prior art cannot locate the position of the transformer winding deformation fault. It is of great significance to prevent power grid accidents.

Description

technical field

[0001] The invention relates to the technical field of transformer fault detection, in particular to a transformer winding deformation fault location detection method. Background technique

[0002] Transformer is one of the main equipment of the power system, which plays a pivotal role in grid interconnection and power exchange. When the transformer is subjected to short-circuit impact or transportation collision and other factors, the transformer winding may undergo axial or radial dimension changes under the action of electrodynamic or mechanical force, usually characterized by local distortion, bulge or displacement of the winding, which is called winding out of shape. Severe winding deformation will lead to insulation breakdown, resulting in power system accidents and huge economic and social losses. The difficulty of the transformer winding deformation problem is that the winding deformation has the characteristics of concealment and gradual change, an...

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