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Autotransformer with low-voltage compensation

An autotransformer, main transformer technology, applied in transformers, fixed transformers, variable transformers, etc., can solve problems such as incomplete compensation, incomplete compensation of low-voltage compensation, and inability to completely solve problems, and achieve the effect of solving voltage fluctuations

Inactive Publication Date: 2010-02-17
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But this method cannot completely solve the problem, because the compensation for low pressure is not completely compensated
The compensation method currently used can be found in figure 2 , the connection is that the end of the low-voltage winding is connected in series with the compensation winding, the beginning of the excitation winding I is connected to the beginning of the low-voltage winding, and the end is connected to the end of the low-voltage winding. The transformer core is flux-changing

Method used

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Embodiment 1

[0019] An autotransformer with low-voltage compensation, the wiring method is as follows image 3 As shown, it includes main transformer, voltage regulator and compensation device. The main transformer includes low-voltage winding, common winding and series winding; the voltage regulator includes voltage regulating switch k, voltage regulating winding and excitation winding I for exciting the voltage regulating winding; compensation The device includes a compensation winding and an excitation winding II for excitation of the compensation winding; the beginning of the low-voltage winding is connected to the beginning of the excitation winding I, and the leading end is the beginning of the low-voltage winding A, the end of the low-voltage winding is connected in series with the compensation winding, and the end of the excitation winding I is connected to the end of the compensation winding Connected, leading out to the low-voltage terminal x; the beginning of the common winding o...

Embodiment 2

[0021] Such as image 3 As shown, the main transformer, the voltage regulator and the compensating device in Embodiment 1 are provided with separate bodies, respectively the main transformer body 101 , the voltage regulator body 103 and the compensating device body 102 . In the main transformer body 101, the arrangement of low-voltage windings, common windings and series windings is shown in Figure 4 ; In the voltage regulator body 103, the arrangement of the field winding I and the voltage regulating winding is shown in Figure 5 ; In the compensation device body 102, the arrangement of the excitation winding II and the compensation winding is shown in Figure 6 . Among them, the compensation winding is used to compensate the low-voltage side voltage; the excitation winding II is used to excite the compensation winding; the excitation winding I is used to excite the voltage regulating winding.

[0022] The invention can completely solve the problem of low-voltage voltage ...

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Abstract

The invention discloses an autotransformer with low-voltage compensation, comprising a main transformer, a voltage regulator and a compensating device, wherein the main transformer comprises a low voltage winding, a common winding and a series winding; the voltage regulator comprises a voltage regulating switch, a voltage regulating winding and a first exciting winding which carries out excitationfor the voltage regulating winding; the compensating device comprises a compensation winding and a second excitation winding which carries out excitation for the compensation winding; the beginning end of the low voltage winding is connected with the beginning end of the first exciting winding; and the tail end of the low voltage winding is connected with the compensation winding in series. The autotransformer is characterized in that the tail end of the first exciting winding is connected with the tail end of the compensation winding. By adopting the voltage regulating compensation connection method of the invention, the low-voltage compensation is complete compensation for the autotransformer of variable flux voltage regulation of a neutral point, so that low voltage fluctuation can bethoroughly solved when a transformer regulates the voltage.

Description

technical field [0001] The invention relates to an autotransformer with low-voltage compensation for neutral point variable magnetic flux voltage regulation, which can be used for non-excitation voltage regulation and on-load voltage regulation. Background technique [0002] The autotransformer is an important equipment in the power transmission system. Its ability and quality to adjust the voltage directly affect the safe and stable operation of the power transmission system. The basic requirements for the voltage adjustment of the transformer are small impedance fluctuations, stable and reliable operation, and little interference to the system. but for pressing figure 1 The wiring adopts the autotransformer with neutral point variable flux voltage regulation. When the voltage is in different taps, in addition to the change of medium voltage and current, the voltage of low voltage also changes accordingly; in addition, the impedance voltage of different taps There will als...

Claims

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Application Information

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IPC IPC(8): H01F30/02H01F27/34H01F27/28H01F27/30H01F29/08
Inventor 谢庆峰韩晓东余正慧吉强
Owner CHINA XD ELECTRIC CO LTD
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