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Transition circuit of on-load tap-changer and control method

A technology of on-load tapping and switching, which is applied in the field of transformers, can solve the problems of short electrical life and complex structure, and achieve the effects of long service life, simplified mechanical structure, and simplified mechanical mechanism

Pending Publication Date: 2022-02-25
CHINA ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention proposes a transition circuit and a control method for an on-load tap-changer, aiming at solving the problems of the existing on-load tap-changer with complicated mechanical structure and short electrical life

Method used

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  • Transition circuit of on-load tap-changer and control method
  • Transition circuit of on-load tap-changer and control method
  • Transition circuit of on-load tap-changer and control method

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Embodiment Construction

[0026]Referring now to the accompanying drawings, an exemplary embodiment of the present invention is described, however, the present invention can be implemented in many different forms, and is not limited to the embodiments described herein, and these embodiments are provided for detailed and fully disclosed The invention is sufficiently conveyed to those skilled in the art. The terminology representing the exemplary embodiment in the drawings is not limited to the present invention. In the drawings, the same unit / element is used in the same reference numerals.

[0027] Unless otherwise stated, the terms (including technological terms) used herein have a usual understanding of those skilled in the art. In addition, it will be understood that the terms defined by the commonly used dictionary should be understood to have a consistent meaning with the context of its related art, and should not be understood as ideal or too formal meaning.

[0028] figure 1 A structural diagram o...

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Abstract

The invention discloses a transition circuit of an on-load tap-changer and a control method. The transition circuit of the on-load tap-changer comprises a first change-over switch Z1, a second change-over switch Z2, a main vacuum bubble V1, a first auxiliary vacuum bubble V2, a second auxiliary vacuum bubble V3, a transition resistor R, a first main switch MC1 and a second main switch MC2. When a circulating current cut-off task is carried out, the first auxiliary vacuum bubble V2 and the second auxiliary vacuum bubble V3 are switched by turns to work, so that the switching task of the auxiliary vacuum bubbles is reduced, and the electrical life of the on-load tap-changer is prolonged. According to the transition circuit of the on-load tap-changer and the control method provided by the embodiment of the invention, the overall structure of the transition circuit of the on-load tap-changer and the control method are independently designed, so that the mechanical complexity of the on-load tap-changer is greatly reduced, the reliability of the on-load tap-changer is improved, and the electrical life of a whole switch is greatly prolonged.

Description

Technical field [0001] The present invention relates to the technical field of transformers, and in particular, there is a transition circuit and a control method having a tandem switching switch. Background technique [0002] A load-bearing switch is a switching device that provides a constant voltage when the transformer changes in the load. The basic principle is to ensure the switching between the splitting in the transformer winding without interrupting the load current, thereby changing the number of turns of the winding, that is, the voltage ratio of the transformer, and finally realizes the pressure regulation. Vacuum types, mainly relying on vacuum tubes of switching switches to achieve arc extinguishing, arc and hot gases are not exposed; the oil in which the oil is separated from the open-off oil is not carbonized and polluted, and the oil does not need to purify; the burning of the contact in the vacuum tube Damaged corrosion can be lowered. The on-board switching swi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F21/00
CPCH01F21/00
Inventor 张书琦李鹏李金忠汪可杨帆李戈琦张浩李刚刘雪丽孙建涛程涣超徐征宇王健一遇心如梁宁川吴标王琳
Owner CHINA ELECTRIC POWER RES INST
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