CN206116155U

CN206116155U - Stepless on -load voltage -regulating transformer of intelligence

Info

Publication number: CN206116155U
Application number: CN201621192095.2U
Authority: CN
Inventors: 高留志; 刘建业; 刘文杰
Original assignee: Shandong Excellent Electric Co Ltd
Current assignee: Shandong Excellent Electric Co Ltd
Priority date: 2016-10-28
Filing date: 2016-10-28
Publication date: 2017-04-19
Anticipated expiration: 2026-10-28

Abstract

The utility model discloses a stepless on -load voltage -regulating transformer of intelligence, the structure needs two other magnetic circuit iron cores, a main circuit iron core and six return yoke magnetic circuit iron cores to constitute, and wherein two other magnetic circuit iron cores are installed respectively in main circuit iron core both sides, and a horizontal return yoke magnetic circuit iron core is installed to every other magnetic circuit iron core top mutually and below, the main circuit iron core is three main circuit iron core posts and upper and lower indisputable yoke piece one -tenth, and other magnetic circuit iron core sets up to two, and every is three other magnetic circuit iron core posts and upper and lower indisputable yoke piece becomes, and per two other magnetic circuit iron core posts and two middle main circuit iron core posts of other magnetic circuit iron core post are looks, and the global design is three -phase enneastyle structure.

Description

A kind of intelligent stepless ULTC

Technical field

This utility model is related to the transformer technology field of power distribution network electric power system, and in particular to a kind of intelligent stepless has load Adjustable transformer.

Background technology

ULTC in the market is substantially transformer coil point circle tap, then has load with mechanical type Tap changer carries out the voltage-regulation for having gear, and the response speed of this voltage-regulation is slow, and cannot realize step-less adjustment, machinery Step switch have the restriction of action frequency.

It is stepless in order to adapt at a high speed, and without the demand of action frequency life-span restriction, therefore market demand one kind is stepless ULTC.

Utility model content

For drawbacks described above present in prior art and deficiency, this utility model has load to adjust there is provided a kind of intelligent stepless Pressure transformer.

This utility model is achieved by the following technical solution：A kind of intelligent stepless ULTC, it is overall It is designed as Three-phase nine-limb structure, it is characterised in that：The structure of transformator needs two other magnetic circuit iron cores, a main magnetic circuit iron cores Constitute with six pieces of return yoke magnetic circuit iron cores, two of which side magnetic circuit iron core is respectively arranged in main magnetic circuit iron core both sides, the side magnetic circuit per phase One horizontal return yoke magnetic circuit iron core is respectively installed above and below iron core；

Main magnetic circuit iron core is that three main magnetic circuit iron core columns and upper and lower iron yoke are constituted, and other magnetic circuit iron core is set to two, each It is that three other magnetic circuit iron core columns and upper and lower iron yoke are constituted, per two in the middle of other magnetic circuit iron core column and two other magnetic circuit iron core columns Main magnetic circuit iron core column is a phase, and global design is Three-phase nine-limb structure.

Preferably, distinguishing coiling transformer dc magnet exciting coil in the magnetic circuit iron core column of transformator both sides six roots of sensation side.

Preferably, coiling secondary transformer is distinguished in the middle of the transformator in three main magnetic circuit iron core columns.

Preferably, described be wound on outermost per phase transformer primary coil, inside surround two other magnetic circuit iron core columns and Two transformer dc magnet exciting coils being enclosed within two other magnetic circuit iron core columns and a main magnetic circuit iron core column and one are enclosed within master Secondary transformer in magnetic circuit iron core column.

It is further described that the other magnetic circuit iron core column of transformer dc magnet exciting coil and middle coiling in two coilings of both sides The main magnetic circuit iron core column of secondary transformer, is wrapped up around being made as one group by primary transformer coil, be also a phase；This transformation The structure of device is provided with six transformer dc magnet exciting coils, three primary transformer coils, three transformer secondary lines altogether Circle, wherein other magnetic circuit iron core column is through the main leakage sky road primary transformer coil and secondary transformer.

Utility model works principle：

DC current is passed through in two direct-flow magnet exciting coils of every phase transformer, such that it is able to adjust transformator side magnetic circuit The magnetic saturation of iron core, after other magnetic circuit iron core magnetic saturation is raised, the flux component of the alternating current in other magnetic circuit iron core will Reduce, the magnetic flux of reduction is squeezed into main magnetic circuit iron core, raise the voltage that transformer secondary is exported.When other magnetic circuit iron core magnetic is satisfied After reducing with degree, the flux component of the alternating current in other magnetic circuit iron core will increase, and the alternating magnetic flux in main magnetic circuit iron core will Reduce, reduce the voltage that transformer secondary is exported.The size of DC excitation electric current of the transformator per phase is adjusted respectively, it is possible to The regulation to split-phase voltage output is realized, so as to administer unbalanced source voltage.

This utility model beneficial effect：

（1）The transformer on-load voltage regulating of free voltage grade is capable of achieving using this mode, and improves on-load voltage regulation transformation The response speed of device, realizes the quick voltage stabilizing that transformator is exported.

（2）Using adjusting by the way of magnetic flux, the step-less adjustment of pressure regulation is realized, do not adjusted by the stepping of mechanical on-load voltage regulating switch The restriction of section and regulation number of times.

（3）By the output for adjusting DC excitation electric current, the voltage harmonic in electrical network can be filtered.

（4）By the output for adjusting DC excitation electric current, the imbalance compensation of three-phase output voltage is realized.

Description of the drawings

Fig. 1 is this utility model side magnetic circuit core structure schematic diagram；

Fig. 2 is this utility model main magnetic circuit core structure schematic diagram；

Fig. 3 is this utility model return yoke magnetic circuit core structure schematic diagram；

Fig. 4 is this utility model core structure assembly structure diagram；

Fig. 5 is the assembly structure diagram after this utility model coiling；

In figure, 1, other magnetic circuit iron core, 1.1, other magnetic circuit iron core column, 1.2 iron yokes, 2, main magnetic circuit iron core, 2.1, main magnetic circuit ferrum Stem stem, 2.2, iron yoke, 3, return yoke magnetic circuit iron core, 4, transformer dc magnet exciting coil, 5, primary transformer coil, 6, transformator pair Sideline is enclosed.

Specific embodiment

Below by indefiniteness embodiment and combine accompanying drawing to utility model further instruction：

A kind of intelligent stepless ULTC, global design is Three-phase nine-limb structure, it is characterised in that：Transformator Structure need two other magnetic circuit iron cores（1）, a main magnetic circuit iron core（2）With six pieces of return yoke magnetic circuit iron cores（3）Constitute, wherein two Individual other magnetic circuit iron core（1）It is respectively arranged in main magnetic circuit iron core（2）Both sides, the side magnetic circuit iron core per phase（1）Above and below respectively install One horizontal return yoke magnetic circuit iron core（3）；Main magnetic circuit iron core（2）For three main magnetic circuit iron core columns（2.1）And upper and lower iron yoke（2.2） Constitute, other magnetic circuit iron core（1）Two are set to, each is three other magnetic circuit iron core columns（1.1）And upper and lower iron yoke（1.2）Constitute, The other magnetic circuit iron core column per two（1.1）With two other magnetic circuit iron core columns（1.1）Middle main magnetic circuit iron core column（2.1）For a phase, Global design is Three-phase nine-limb structure.

In specific implementation process, transformator both sides six roots of sensation side magnetic circuit iron core column（1.1）The upper transformer dc of coiling respectively is encouraged Magnetic coil（4）.

In specific implementation process, three main magnetic circuit iron core columns in the middle of transformator（2.1）Upper coiling transformer secondary line respectively Circle（6）.

Primary transformer coil in specific implementation process, per phase（5）Outermost is wound on, inside surrounds two other magnetic circuit ferrum Stem stem（1.1）And it is enclosed within two other magnetic circuit iron core columns（1.1）On two transformer dc magnet exciting coils（4）With a main magnetic circuit Iron core column（2.1）And one be enclosed within main magnetic circuit iron core column（2.1）On secondary transformer（6）, wherein other magnetic circuit iron core column （1.1）From primary transformer coil（5）And secondary transformer（6）Between main leakage sky road pass through.

In specific implementation process, transformer dc magnet exciting coil in two coilings of both sides（4）Other magnetic circuit iron core column （1.1）Secondary transformer with middle coiling（6）Main magnetic circuit iron core column（2.1）, by primary transformer coil（5）Parcel Also it is a phase around being made as one group；It is provided with six transformer dc magnet exciting coils in the structure of this transformator altogether（4）, three Primary transformer coil（5）, three secondary transformers（6）.

Utility model works principle：

This utility model can be achieved by the prior art without the technical characteristic of description, will not be described here.Certainly, on It is not that, to restriction of the present utility model, this utility model is also not limited to the example above to state bright.The art it is general Change, remodeling, addition or replacement that logical technical staff is made in essential scope of the present utility model, should also belong to this practicality New protection domain.

Claims

1. a kind of intelligent stepless ULTC, global design is Three-phase nine-limb structure, it is characterised in that：Three phase-change pressures The structure of device needs two other magnetic circuit iron cores, a main magnetic circuit iron core and six pieces of return yoke magnetic circuit iron cores to constitute, two of which side magnetic Road iron core is respectively arranged in main magnetic circuit iron core both sides, respectively installs a horizontal return yoke magnetic circuit above and below the magnetic circuit iron core of side per phase Iron core；

Main magnetic circuit iron core is that three main magnetic circuit iron core columns and upper and lower iron yoke are constituted, and other magnetic circuit iron core is set to two, and each is three Root side magnetic circuit iron core column and upper and lower iron yoke are constituted, the main magnetic per two in the middle of other magnetic circuit iron core column and two other magnetic circuit iron core columns Road iron core column is a phase, and global design is Three-phase nine-limb structure.

2. a kind of intelligent stepless ULTC according to claim 1, it is characterised in that：The transformator both sides six roots of sensation Coiling transformer dc magnet exciting coil is distinguished in other magnetic circuit iron core column.

3. a kind of intelligent stepless ULTC according to claim 1, it is characterised in that：Three in the middle of transformator Coiling secondary transformer is distinguished in main magnetic circuit iron core column.

4. a kind of intelligent stepless ULTC according to claim 1-3 any one, it is characterised in that：Per phase Primary transformer coil be wound on outermost, inside surrounds two other magnetic circuit iron core columns and is enclosed within two other magnetic circuit iron core columns Two transformer dc magnet exciting coils and a main magnetic circuit iron core column and a transformer secondary being enclosed within main magnetic circuit iron core column Coil.

5. a kind of intelligent stepless ULTC according to claim 4, it is characterised in that：Two coilings of both sides The other magnetic circuit iron core column and middle coiling of transformer dc magnet exciting coil the main magnetic circuit iron core column of secondary transformer, by Primary transformer coil is wrapped up around being made as one group, is also a phase；The structure of this transformator is provided with six transformer dcs altogether Magnet exciting coil, three primary transformer coils, three secondary transformers, wherein other magnetic circuit iron core column passes through transformer primary side Main leakage sky road between coil and secondary transformer.