Method for recognizing coil material of distribution transformer

Abstract

The invention provides a method for recognizing a coil material of a distribution transformer. The method comprises the following steps: taking 220v of voltage from a secondary side of a 220V standard distribution transformer, measuring the voltage by virtue of a voltage meter, and denoting as M; measuring the obtained voltage value by virtue of a standard meter, and denoting as N; comparing the voltage value M with the voltage value N, and calculating the error of the voltage value M and the voltage value N and denoting as a, wherein a is as shown in the specification; adding the voltage obtained from the secondary side of the 220V standard distribution transformer to an input end of a to-be-measured distribution transformer; measuring the voltage value of an output end of the to-be-measured distribution transformer by virtue of the voltage meter and denoting as P; measuring the voltage value of the output end of the to-be-measured distribution transformer by virtue of the standard meter, and denoting as Q; comparing the voltage value P with the voltage value Q, calculating the error of the voltage value P and the voltage value Q, denoting as b, wherein b is as shown in the specification; and judging the coil material according to the measured values M and P and the errors a and b. The measurement method disclosed by the invention is simple and reliable; the material of the coil can be determined through the measured data; insulation of the transformer does not need to be destroyed; and the benefits of purchasers can be reliably maintained.

Description

technical field [0001] The invention relates to the field of power distribution and transmission, in particular to a method for identifying coil materials of power distribution transformers. Background technique [0002] At present, in the production of transformers, the coils are generally made of copper. Since the price of aluminum is much lower than that of copper, many manufacturers will use aluminum or copper-clad aluminum materials when making transformer coils. However, since the conductivity and electrical properties of aluminum are far inferior to copper, using aluminum or other materials instead of copper will greatly reduce the performance of the transformer and cause harm to the power grid. At the same time, if the purchase agreement of the distribution transformer requires the manufacturer to provide copper coil material, but the manufacturer actually uses aluminum or copper-clad aluminum material, the buyer will suffer a lot of economic losses. [0003] F...

AI Technical Summary

Problems solved by technology

[0006] To sum up, none of the existing technologies can effectively identify the material of the transformer coil. Therefore, there is an urgent need for a new method that can effectively identify the coils in the transformer that use aluminum or copper-clad aluminum coils instead of copper materials to ensure that the equipment Normal operation, safeguarding the interests of consumers

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