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Autotransformer with novel voltage regulation mode and voltage regulation method thereof

An autotransformer and voltage regulation technology, applied in transformers, variable transformers, variable inductors, etc., can solve the problems of inability to instantly capture subtle changes in the power grid, single voltage regulation tap position, and inability to meet transformers, etc. Achieve the effect of reducing the connection between switches, ensuring product performance, and improving labor productivity

Active Publication Date: 2020-01-17
TBEA SHENYANG TRANSFORMER GRP CO LTD
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AI Technical Summary

Problems solved by technology

[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 voltage regulation method has little effect on the small changes in the power grid, and cannot capture subtle changes in the power grid instantly.
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 can no longer meet the needs of transformers with larger voltage regulation ranges.
[0003] At present, the use of high-voltage no-load regulation plus on-load regulation 220KV autotransformer has not been reported.

Method used

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  • Autotransformer with novel voltage regulation mode and voltage regulation method thereof
  • Autotransformer with novel voltage regulation mode and voltage regulation method thereof
  • Autotransformer with novel voltage regulation mode and voltage regulation method thereof

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] like figure 1 As shown, the winding arrangement diagram of a novel voltage regulation mode of the present invention, the single-column coil includes LV from the inside to the outside as a medium voltage winding (common winding), LTC as an on-load voltage regulating winding, and HV as a high voltage winding (that is, a series winding ), DETC is the no-load voltage regulating winding, and TV is the third winding. Among them, the LTC on-load voltage regulating winding and the DETC off-load voltage regulating winding are both connected to the end of the HV high-voltage winding, and the on-load voltage regulating winding is located between the HV high-voltage and LV medium-voltage main channels, which can effectively avoid the on-load voltage regulation. The problem of large impedance fluctuations ensures the stable operation of the transfo...

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Abstract

The invention relates to an auto-transformer with a novel voltage regulation mode and a voltage regulation method thereof. A high-medium voltage part of each phase comprise a high-voltage winding HV,a no-load voltage regulation winding DETC, an on-load voltage regulation winding LTC and a medium-voltage winding LV which are connected in sequence, and a no-load tap-changer is connected between theno-load voltage regulation winding DETC and the on-load voltage regulation winding LTC. According to the invention, the complexity of design, process and production is reduced while the product performance is guaranteed, and the labor productivity is greatly improved. And meanwhile, a voltage regulation coil is not connected during rated tapping, so that the operation reliability is improved. Byreducing one no-load switch, the connection wires among the switches can be reduced, the space is reduced, and the economic cost is reduced.

Description

technical field [0001] The invention relates to the technical field of transformer manufacturing, in particular to an autotransformer in a novel voltage regulation mode. 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 voltage regulation method has little effect on the small changes in the power grid, and cannot instantly capture subtle changes in the power grid. 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 can no longer meet the needs of transformers with larger voltage regulation ranges. [0003] At present, the use of high-voltage no-load regulation plus on-load regulation 220KV autotransformer has not bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F29/02
CPCH01F29/02H01F29/025
Inventor 刘俊延林阳李建军符雪鹏
Owner TBEA SHENYANG TRANSFORMER GRP CO LTD
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