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Mechanical change-over switch arrangement structure of on-load tap-changer for converter transformer

A technology for converter transformers and switching switches, applied in transformers, variable transformers, electrical switches, etc., can solve the problems of converter transformers on fire, bursting, fire, etc., and achieve the effect of improving safety, avoiding fire, and eliminating the risk of fire.

Pending Publication Date: 2020-08-14
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a mechanical diverter switch arrangement structure for on-load tap changers for converter transformers, aiming at solving the problem of igniting and bursting of converter transformers caused by the failure of existing diverter switches placed in the converter transformer oil tank The problem

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  • Mechanical change-over switch arrangement structure of on-load tap-changer for converter transformer

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Embodiment Construction

[0020] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] see figure 1 , which is a structural schematic diagram of the mechanical switch arrangement structure of the on-load tap-changer for the converter tra...

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Abstract

The invention provides a mechanical change-over switch arrangement structure of an on-load tap-changer for a converter transformer. The mechanical change-over switch arrangement structure of the on-load tap-changer for the converter transformer comprises a change-over switch and a tap selector, wherein the change-over switch is arranged outside an oil tank of the converter transformer body, and the tap selector is arranged inside the oil tank of the converter transformer body; and a mechanical driving mechanism is arranged on the oil tank of the converter transformer body, is respectively connected with the change-over switch and the tap selector, and is used for driving the change-over switch to switch and driving the tap selector to act. The change-over switch is arranged outside the oiltank of the converter transformer body of the converter transformer, and the tap selector is arranged inside the oil tank of the converter transformer body, so that the change-over switch is separated from the oil tank of the converter transformer body, and the oil tank of the converter transformer body can be prevented from catching fire when an inter-stage short-circuit fault occurs to the change-over switch.

Description

technical field [0001] The invention relates to the technical field of gravity separation, in particular to a mechanical switch arrangement structure of an on-load tap changer for a converter transformer. Background technique [0002] The converter transformer is one of the most critical and expensive core equipment in the DC transmission project. The on-load tap changer is the key component of the converter transformer and the only component that operates frequently. The on-load tap changer is composed of a diverter switch and a tap selector, which are connected to different taps of the voltage regulating winding at the end of the converter transformer grid side winding to realize the on-load adjustment of the number of turns of the converter grid side winding. [0003] At present, the layout of the on-load tap-changer for the converter transformer is built-in and external, which are respectively placed in the main oil tank of the converter transformer or placed in a small ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/00H01F29/04
CPCH01F29/04H01H9/0005H01H9/0027
Inventor 刘泽洪李金忠李鹏殷禹张书琦程涣超刘雪丽孙建涛汪可
Owner STATE GRID CORP OF CHINA
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