Autotransformer with single fuel tank and dual-body

Abstract

The invention relates to an autotransformer with single fuel tank and a dual-body. The dual-body includes a main transformer body and a compensation transformer body; the main transformer body includes a tertiary winding, a low-voltage regulating winding, a common winding, and a series winding, wherein the arrangement manner of all the windings, from an inner side of an iron core column to an outer side of the iron core column is that: the tertiary winding-the low-voltage regulating winding-the common winding-the series winding; the compensation transformer includes a compensation winding and an exciting winding, wherein the arrangement manner of all the windings, from an inner side of an iron core column to an outer side of the iron core column is that: the compensation winding B-the exciting winding J; and the main transformer body and the compensation transformer body are arranged in the same one fuel tank. The autotransformer can meet the demand of large-range voltage regulation, can effectively decrease a voltage deviation area of the tertiary winding, improve the operation quality of the tertiary winding under the low voltage and the high voltage, decrease a switch voltage class, decrease the number of selected switches, greatly improve the labor productivity, and enhance the reliability of operation.

Description

technical field [0001] The invention relates to the technical field of transformer manufacturing, in particular to a single oil tank double body autotransformer. Background technique [0002] At present, 220KV transformers for power equipment generally adopt constant magnetic flux voltage regulation in China, and the required number of voltage regulation taps is small and the voltage regulation tap position is single. This kind of voltage regulation method has little effect on the small change of the power grid, and it cannot capture the subtle changes of the power grid in an instant. At the same time, because the transformer is a variable flux voltage regulation, the potential of the turns at each tap position changes, and the voltage deviation of the third winding larger. However, the current industry and economy are increasingly developed, resulting in a large demand for industrial electricity and a wider range of voltage regulation. A single voltage regulation method ca...

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Problems solved by technology

[0004] Aiming at the shortcomings of the autotransformer in the prior art, such as the single voltage regulation mode and the inability to meet the needs of a wide range, the technical problem to be solved by the present invention is to provide a single-tank double-body autotransformer that can meet the requirements of a wide range of voltage regulation

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