Large-current high-impedance transformer compensation structure
A high-impedance transformer and impedance transformer technology, applied in the field of transformers, can solve the problems of product vibration, the inability of air-core inductance coils to achieve high-current operation, and high noise, so as to reduce noise and vibration, improve the overall current allowable value, and temperature performance. boosted effect
Inactive Publication Date: 2021-03-19
WUJIANG TRANSFORMER
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Problems solved by technology
[0006] The technical problem solved by the invention is to provide a high-current high-impedance transformer compensation structure, focusing on solving the problems that the air-core inductance coil in the conventional transformer structure cannot realize high-current operation and the product vibrates and noises
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[0017] like figure 1 Shown, a kind of high-current high-impedance transformer compensating structure comprises conventional structure impedance transformer body, reactor coil 16 and relevant connecting lead wire; Described reactor coil 16 is connected with transformer body; In order to further enhance the reactor coil 16 Allowable value of current, using continuous pie-type double-cake parallel connection method to increase the allowable current value of each path of parallel structure, the specific line pie shunt reactor coil 16 is expanded as follows image 3 shown. The transformer body includes an iron core 11 , a low voltage coil 12 , a medium voltage coil 13 , a high voltage coil 14 and a voltage regulating coil 15 arranged from inside to outside.
[0018] The reactor coil 16 is connected in series with the low-voltage coil 12 of the conventional impedance transformer in a multi-channel parallel manner, and then connected to the three-phase coil in a transformer connecti...
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The invention relates to the technical field of transformer manufacturing, and discloses a large-current high-impedance transformer compensation structure. The structure comprises an impedance transformer body of a conventional structure, an electric reactor coil and related connecting leads; the reactor coil is connected with the transformer body; the reactor coil adopts a continuous cake type double-cake parallel connection mode; the transformer body comprises an iron core, a low-voltage coil, a medium-voltage coil, a high-voltage coil and a voltage regulating coil which are arranged from inside to outside; and the reactor coil is connected with the low-voltage coil in series in a multi-path parallel connection mode. A two-path or multi-path parallel connection mode is adopted to reducea single-path cake passing current value, so that the total current allowable value is improved. According to the technical scheme, the heavy inductance coil adopts a cake-type coil structure, by controlling ampere-turn balance, the mechanical performance, the electromagnetic performance and the temperature performance of the coil are remarkably improved, and noise and vibration of the product arereduced; and meanwhile, the cake-type coil is improved into double-cake-type parallel coils arranged up and down, so that the allowable current passing capacity of the product can be improved.
Description
technical field [0001] The invention relates to a transformer, in particular to a large-current high-impedance transformer compensation structure. Background technique [0002] The State Grid Corporation of China strives to promote the high-quality development of the power grid and the development of clean energy. Therefore, green, environmentally friendly, and highly reliable power transformers are key equipment for national power construction. The direct assessment requirement for the high reliability of the transformer is to improve the short-circuit resistance capability of the transformer, and the high-impedance, high-current transformer is the only choice that meets the requirements. [0003] The technical solutions for high-impedance and high-current products in the transformer industry mainly include: Option 1, the coils are arranged upside down, that is, the coils are arranged from the iron core to the outside and are equipped with high-voltage coils, medium-voltage...
Claims
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Login to View More IPC IPC(8): H01F27/28H01F27/33
CPCH01F27/28H01F27/33
Inventor 高辉郭勤标
Owner WUJIANG TRANSFORMER