Connection method and connection structure of regulating transformer and power transformer

Abstract

The invention discloses a connection method and connection structure of a regulating transformer and a power transformer. The method is that a high-voltage terminal port is arranged on the side of the regulating transformer, a secondary coil connection hole is arranged on the opposite side of the power transformer and the regulating transformer, and meanwhile wires which pass through the high-voltage terminal port and the secondary coil connection hole are used to connect the interior elements of the regulating transformer and the interior elements of the power transformer. In the method of the invention, when the two transformers are connected, tapping on the top of the transformers and arranging sleeves are not needed, the problem of rearranging the wires on the top of the transformers are unnecessary to consider, the modification can be completed within two hours according to the statistics of the applicant of the invention; and during the modification process, the damage of the shells of the transformers is smaller, the exposing time of the interior elements of the transformers is shorter and the performance stability of the transformers can be ensured after the modification.

Description

technical field [0001] The invention relates to a transformer, in particular to a connection method and a connection structure between a voltage regulating transformer and a power transformer. Background technique [0002] There are many ways to transform the off-load voltage regulating transformer, one of which is to install a voltage regulating transformer on the existing off-load voltage regulating transformer. This transformation method involves the connection of two transformers. The connection of the existing transformer is mostly top connection, which is to set a bushing connected to the transformer coil at the top of the transformer, and then connect it to the bushing on the transformer through a wire (cable); but this connection method was found in the actual transformation process. There are the following problems: a. There are already as many as 11 upper bushings on the existing transformer, and the wire connections are very dense. On the basis of the original num...

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Problems solved by technology

[0002] There are many ways to transform the off-load tap-changing transformer, one of which is to install a tap-regulating transformer on the existing off-load tap-changing transformer, which involves the connection of two transformers, because The connection of existing transformers is mostly top connection, which is to set a bushing connected to the transformer coil on the top of the transformer, and then connect to the bushing on the transformer through a wire (cable); but in the actual transformation process, it is found that this connection method There are the following problems: a. There are already 11 bushings on the upper part of the existing transformer, and the wire connections are very dense. Adding 3 more bushings for the connection of the two transformers on the basis of the original number of top bushings will lead to a large amount of reconstruction work Large, labor-intensive, and time-consuming; b. It will lead to more dense cables on the top of the transformer, which is likely to cause accidents; c. The addition of bushings requires a lot of transformation of the transformer shell, which affects the stability of the transformer; d. Add 6 bushings , higher cost

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