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On-load multistage adjustable-capacity tap switch

A technology of tap changer and termination, which is applied in the field of on-load capacity regulating tap changer, and can solve problems such as inability to realize transformer regulation

Active Publication Date: 2012-08-01
DANDONG JINLI POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of switch realizes the adjustment of the transformer between two capacities under the load state through the abov

Method used

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  • On-load multistage adjustable-capacity tap switch
  • On-load multistage adjustable-capacity tap switch
  • On-load multistage adjustable-capacity tap switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: The connection group is Y / yn0, that is, the high voltage side is star connection

[0017] see figure 1 , which includes transmission mechanism and fast mechanism 1, insulating shaft 2, insulating barrel 3, high-voltage moving contact system, high-voltage static contact system, low-voltage moving contact system and low-voltage static contact system, high-voltage moving contact system high-voltage static contact The head system is designed according to the star connection, specifically, the three groups (phases) of high-voltage moving contacts 4 in the high-voltage moving contact system are connected by a high-voltage conductive rod 13; the three groups of low-voltage moving contacts 7 and the A set of low-voltage outgoing neutral jog contacts 10 are connected by a low-voltage conductive rod 12, and the low-voltage outgoing neutral jog contacts are installed on the insulating shaft 2; see figure 2 , the high-voltage static contact system of each phase is com...

Embodiment 2

[0019] Example 2: The connection group is D / yn0, that is, the high-voltage side is a fillet connection

[0020] see Figure 5 , the low-voltage moving contact system and the low-voltage static contact system in this embodiment are exactly the same as in the first embodiment, the difference is that the high-voltage moving contact system and the high-voltage static contact system are designed according to the angle connection, specifically, each phase is composed of The two-layer high-voltage moving contact and the corresponding two-layer high-voltage static contact system, the two-layer high-voltage moving contact is connected by a high-voltage conductive rod 15, wherein the upper high-voltage moving contact is a tap moving contact 16, and the lower high-voltage moving contact is a The terminal moving contact 17; the lower layer of the two-layer high-voltage static contact system is the terminating static contact 18, which corresponds to the terminating moving contact, forming ...

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Abstract

The invention provides an on-load multistage adjustable-capacity tap switch, and aims to solve the problem that the prior on-load switch cannot adjust more than three capacities. The key points of the on-load multistage adjustable-capacity tap switch lies in that when the turn number of a high voltage coil and the turn number of a low voltage coil of a transformer winding are changed at the same time, the capacity of a transformer is changed. Therefore, three groups of low voltage moving contacts and one group of low voltage neutral point leading-out moving contacts in a low voltage moving contact system are connected by a low voltage electrical conductive rod; the low voltage neutral point leading-out moving contacts are mounted on an insulating rotary shaft; each phase of low voltage static contact system comprises N low voltage static contacts; and each phase of high voltage static contact system comprises N high voltage static contacts. When the insulating rotary shaft rotates, all moving contacts synchronously rotate to be switched to the corresponding static contacts, and the turn numbers of the high voltage side coil and the low voltage side coil are changed at the same time, thereby changing the capacity of the transformer and realizing the adjustment of the transformer among N capacities.

Description

technical field [0001] The invention relates to an on-load capacity-regulating tap changer, in particular to a tap changer for changing the capacity of a transformer in multiple stages by changing the turns of the coils on the high-voltage side and the low-voltage side at the same time. Background technique [0002] The current on-load switch (refer to CN101692393A) can adjust the two capacities of the transformer on load. Specifically, the high-voltage side operates in delta connection when the capacity is large, and operates in star connection when the capacity is small; the low-voltage side is divided into three sections: I, II and III. When the capacity is small, the three stages operate in series, and when the capacity is large, stages I and II are connected in parallel and then run in series with stage III. This kind of switch realizes the adjustment of the transformer between two capacities under the load state through the above connection, but it cannot realize the a...

Claims

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Application Information

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IPC IPC(8): H01F29/04H01H1/56
Inventor 邹鹏栾大力贾继莹赵悦欣
Owner DANDONG JINLI POWER EQUIP