Distribution transformer winding material detection method

Abstract

The embodiment of the invention discloses a distribution transformer winding material detection method.The method comprises the steps of objective function determination, optimal solution acquisition and quantitative investigation, wherein in the step of objective function determination, transformer design parameters and external characteristic parameters are considered; in the step of optimal solution acquisition, a correlation function of the external characteristic of the detected transformer serves as an optimization objective, completely same constraint conditions and fitness functions are adopted, the winding material adopts copper wires and aluminum wires for design respectively, transformer design is optimized by applying a genetic algorithm, and an optimal solution WCu and an optimal solution WAl of a W-Cu initial population and a W-Al initial population are solved respectively; in the step of quantitative investigation, quantitative representation is conducted through the distance from an actual measurement point Wm of the detected transformer to the consideration weight coefficient of the optimal solution WCu and the optimal solution WAl, the probability value of the detected transformer belonging to a copper winding transformer or an aluminum winding transformer is obtained, and convenient, rapid and accurate analytical judgment on the detected transformer winding material is achieved.

Description

technical field [0001] The invention relates to the technical field of power supply equipment detection, in particular to a method for detecting the winding material of a distribution transformer. Background technique [0002] With the rapid development of social economy, the power consumption of the whole society is increasing, and the demand for power distribution equipment, especially distribution transformers, is increasing. However, in order to gain a higher market share with relatively small market profits, some distribution transformer manufacturers adopt various counterfeiting strategies, such as falsely reporting capacity, false nameplates, and using inferior materials. Among them, it is most deceptive to use aluminum wire instead of copper wire to wind the transformer winding, or even the outer winding is copper wire, and the inner winding is aluminum wire. The winding is copper wire, the primary winding is copper wire, and the secondary winding is aluminum wire. ...

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Problems solved by technology

[0004] In the embodiment of the present invention, a method for detecting the winding material of a distribution transformer is provided to solve the problem that it is difficult to inspect on-site for the counterfeit means of substituting aluminum wires for copper wires in transformer windings

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