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An on-load voltage regulating capacity regulating tap changer

A technology of tap changer and capacity adjustment switch, which is applied in transformers, variable transformers, electrical component structure associations and other directions, can solve the problems of polluting the arc extinguishing medium transformer oil, reducing the insulation performance of the transformer oil, and endangering the service life of the transformer, etc. Reliable arc extinguishing performance, long service life and elimination of residual magnetism

Active Publication Date: 2016-09-07
巨元智能电气(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems are: 1. During the process of capacity regulation and voltage regulation, the arc generated by the switching of the dynamic and static contacts will pollute the arc extinguishing medium transformer oil, resulting in a rapid decline in the insulation performance of the transformer oil, which seriously endangers the service life of the transformer and poses a great safety hazard
2. When the capacity is switched, all the contacts of the high and low voltage groups are switched synchronously, and the arc is greatly affected by the high current of the low voltage side winding, which makes the dynamic and static contacts easily burned

Method used

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  • An on-load voltage regulating capacity regulating tap changer

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Embodiment Construction

[0020] see figure 1 . The mounting plate 1 is horizontally and fixedly placed on the upper part of the inner cavity of the transformer, and its top surface is used to fix the operating parts, namely: the capacity adjustment operation mechanism 6, the first voltage adjustment operation mechanism 2 and the second voltage adjustment operation mechanism 3, these three The composition and structure of the mechanism are exactly the same, with a set of independent bistable permanent magnet assembly and its toggle lever 7 respectively. The coil in the bistable permanent magnet assembly is connected to the output end of the automatic controller on the transformer. The upper end of the toggle rod 7 is connected with the iron core of the coil, and is constrained by the iron core. The shaft extends downward through the mounting plate 1 . The bottom surface of the mounting plate 1 is used to fix the switch parts, namely: the first capacity regulating switch, the second capacity regulating...

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Abstract

An on-load pressure regulating tap changer, including three sets of operating mechanisms, three capacity regulating switches and two pressure regulating switches, each operating mechanism has a set of bistable permanent magnet components and a toggle rod, each switch It includes a vacuum-sealed insulating cylinder, the switching surfaces of the moving contact piece and the static contact piece are located in the vacuum cylinder cavity of the insulating cylinder; the width of the switching surface of the high-voltage side static contact piece among the three capacity-adjusting switches is smaller than that of the low-voltage side width. Because the switching surface of the dynamic and static contacts is located in the vacuum cylinder cavity, the present invention has the advantages of reliable arc extinguishing performance, long service life and transformer oil will not be polluted by arcs; moreover, the high-voltage winding is cut off first, and then the low-voltage winding is cut off. After connecting the low-voltage winding first, and then connecting the high-voltage winding, the arc is small, which is conducive to eliminating the residual magnetism in the transformer core, avoiding the inrush current and overvoltage when the high-voltage side winding is connected again, and effectively reducing the voltage fluctuation during the switching process. Amplitude purpose.

Description

【Technical field】 [0001] The invention relates to a part of a voltage regulating and capacity regulating transformer, in particular to an on-load voltage regulating and capacity regulating tap changer matched with a voltage regulating and capacity regulating transformer. 【Background technique】 [0002] The on-load capacity and voltage regulation tap changer is a device for adjusting the capacity and voltage of the transformer under the state of excitation or uninterrupted load. It is especially suitable for capacity and voltage regulation distribution transformers with large load changes and grid fluctuations to achieve energy saving and consumption reduction. . It is placed in the oil tank of the distribution transformer and immersed in the transformer oil. The structure includes a capacity regulating part composed of several operating mechanisms and capacity regulating switches, a voltage regulating part composed of several operating mechanisms and voltage regulating switc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F29/04H01F27/40H01H1/56H01H3/32
Inventor 傅建平林秋红姜福照
Owner 巨元智能电气(浙江)有限公司
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