Winding connection structure for double-active-part on-load-tap-changing auto-transformer
A technology of voltage regulating winding and body, applied in the direction of transformer/inductor coil/winding/connection, transformer, variable transformer, etc., can solve problems such as large voltage deviation
Active Publication Date: 2011-06-15
BAODING TIANWEI BAOBIAN ELECTRICAL
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Problems solved by technology
[0002] The high voltage of the autotransformer is non-excitation voltage regulation, and the low voltage can be switched on the power grid of two voltage levels, and the low voltage can also perform on-load voltage regulation at different voltages. The current problem is: low voltage at different voltages The voltage deviation is too large when sharing a set of voltage regulating windings
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[0012] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.
[0013] In the embodiment, the winding wiring structure of a double-body self-coupling on-load tap changer includes a series winding HV, a common winding LV2, and a switch winding LV1. There is a switching winding LV1 between it and the common winding LV2, and it is controlled by an off-load switch to be serially connected to the series winding or to the common winding, that is, through this control, the number of turns of the common winding can be greatly changed to achieve low voltage in two The voltage level of the grid varies greatly.
[0014] In order to make the low-voltage windings under the two voltage levels share a set of voltage regulating windings and on-load switches, and to ensure that the voltage error of each tap is as small as possible, a new dual-body, variable flux compensation voltage regulation structure is adopted: There ar...
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The invention relates to a winding connection structure for a double-active-part on-load-tap-changing auto-transformer, and belongs to the technical field of transformer manufacture. The technical scheme is that: the winding connection structure comprises a series winding (HV), a public winding (LV2) and a switching winding (LV1), and can be connected with two voltage classes of grids in order torealize low voltage; the switching winding (LV1) is arranged between the series winding (HV) and the public winding (LV2); and a no-load switch controls the switching winding (LV1) to be connected inseries with the series winding (HV) or the public winding (LV2), namely the number of turns of the public winding can be controlled to greatly change, so that the low voltage is greatly changed in the two voltage classes of grids. The invention provides the winding connection structure for the auto-transformer, the high voltage adopts off-circuit tap-changing, and the low voltage can be switched on the two voltage classes of grids and also can respectively perform on-load tap-changing under different voltages. The transformer adopting the structure can be used among three voltage classes of grids, but is only responsible for a high voltage grid therein to respectively perform power-flow contact between two low voltage grids. A brand-new double-active-part structural design is adopted so as to effectively solve the problem of overlarge voltage deviation caused by a set of shared regulating winding when the low voltage is connected to different voltage classes of grids.
Description
Technical field: [0001] The invention relates to a winding connection structure of a dual-body self-coupling on-load voltage regulating transformer, which belongs to the technical field of transformer manufacturing. Background technique: [0002] The high voltage of the autotransformer is non-excitation voltage regulation, and the low voltage can be switched on the power grid of two voltage levels, and the low voltage can also perform on-load voltage regulation at different voltages. The current problem is: low voltage at different voltages The voltage deviation is too large when sharing a set of voltage regulating windings. Invention content: [0003] The object of the present invention is to provide a winding connection structure of a dual-body self-coupling on-load tap changer, which adopts a double-body structure design to solve the above-mentioned problems in the background technology. [0004] Technical scheme of the present invention is: [0005] The winding wirin...
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IPC IPC(8): H01F27/28H01F29/04
Inventor 张栋李程刘力强何丽颖张元录
Owner BAODING TIANWEI BAOBIAN ELECTRICAL