CN2422774Y

CN2422774Y - Double zigzag connecting wire phase-shifting voltage regulator

Info

Publication number: CN2422774Y
Application number: CN 00235152
Authority: CN
Inventors: 刘建平; 刘涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-19
Filing date: 2000-05-19
Publication date: 2001-03-07
Anticipated expiration: 2010-05-19

Abstract

The utility model relates to a double-zigzag wire-connecting phase-shifting voltage regulator which belongs to the class of transformers. Primary side windings of the utility model adopt a hexagonal and six-star-shaped combining and wire connecting mode to cause the magnetic flux of two sets of three-phase iron cores to generate transfer in phases and change in values when the tapping neutral points of six star-shaped windings are displaced, and the induced voltage values of corresponding zigzag wire-connection auxiliary side windings are correspondingly changed so that the utility model carries out on-loaded voltage regulation for tap switches using small voltage values. The phase-shifting voltage regulating mode can simplify the structures of voltage regulating devices of an on-loaded voltage regulating transformer and a voltage regulator, and is suitable for carrying out large-capacity and wide-range on-loaded voltage regulation.

Description

Hyperbolic folding wiring phase-shift voltage regulating device

The utility model relates to transformer, particularly a kind of hyperbolic folding wiring phase-shift voltage regulating device.

The voltage-regulation mode of present transformer and voltage regulator mainly is to adopt the direct turn ratio mode that changes to carry out, for example common transformer adopts at its primary coil and tap and shunting switch is set and carries out No-load changer, voltage regulator adopts the contact Induction Regulation more, and there is the high and problem capacious of pressure regulation device voltage in existing voltage regulating mode having under the carrier strip spare.Chinese patent notification number 2341321, application number 98237589, name is called low-voltage loaded automatic voltage-regulating device certain advantage, but its voltage regulating mode exists tap changer to break moment, its voltage regulating transformer once divides wiring that the transient overvoltage problem is arranged, and in big capacity applications certain limitation is arranged.

The utility model aims to provide the tortuous phase-shift theory of a kind of employing and carries out on-load voltage regulation, can reduce the tap switched voltage significantly, and structure comparatively simply can be carried out the Loading voltage regulator of positive negative justification voltage, answers power consumer that the stabilized power supply that can guarantee quality of voltage is provided for low.

The purpose of this utility model reaches by following technical proposals, this programme is by six former limit main windings, six secondary windings, three combination pressure regulation windings, two to three groups of vertically arranged tri-phase iron cores and three to 15 tap changers are formed, it is characterized in that: six former limit main winding WA1, WA2, WB1, WB2, WC1, WC2 connects the non-same polarity closing in sequence that links to each other with next end of the same name successively and is unified into loop, tie point begins to be followed successively by C01 from WA1 is non-with each end between six windings, B1, A01, C1, B01, A1, the combination pressure regulation winding that is connected between C1 and C01 two ends alternately is composed in series successively by three to 15 the pressure regulation windings that are respectively of corresponding WB1 and WC2 winding, the combination pressure regulation winding that is connected between B1 and B01 two ends is composed in series by interval mode successively by the pressure regulation winding of a same combination winding same number of corresponding WA1 and WB2 winding, the combination pressure regulation winding that is connected between A1 and A01 two ends is composed in series with the pressure regulation winding of the branch road same number of connecting with last of WA2 winding successively at interval by corresponding WC1, out of phase winding is pressed end of the same name and is linked to each other with each end respectively in each combination pressure regulation winding, non-same polarity links to each other successively with non-same polarity and is connected into the combination winding, each pressure regulation winding all the other pressure regulation windings except that the winding that is positioned at the series arm two ends all are provided with tap betwixt as tapping point, six secondary winding WA1 and WA2, WB1 and WB2, WC1 be series in the three phase mains loop more respectively after WC2 is connected in twos, WA2 with forward be series between C and C1 two ends after two non-same polarities of WA1 auxiliary winding link to each other, after linking to each other with the non-same polarity of WB1 two auxiliary winding, WB2 is series between A and A1 two ends along asking, after linking to each other with WC1 two auxiliary winding non-same polarities, WC2 is series between B and B1 two ends along asking, A, B, C three termination three phase mains, A1, B1, C1 three ends connect threephase load, and three to 15 symmetrical successively in order each shunting taps of connection of three phase voltage regulating switch also are linked to be neutral point respectively when closure.

Operation principle of the present utility model is: two groups of tri-phase iron cores have constituted two groups of relatively independent three-phase magnetic circuits, six former limit main windings energising are separately done the time spent and can be made the initial magnetic flux of generation in the corresponding magnetic circuit, three combination pressure regulation windings are after it links to each other with former limit main winding with six star fashion, three combination pressure regulation windings impel six former limit main windings and transfer of magnetic circuit generation phase place and numerical value change under the self coupling effect, along with the change of tap position, the induced potential phase place of six secondary windings and numerical value respective change, the secondary winding of series connection correspondence generation negative value is extremely zero again to the variation of the voltage in scope in twos.The wiring of hyperbolic folding makes two groups of tri-phase iron cores excitatory by six former limit main windings, also excitatory by the combination pressure regulation winding of six star connections, it is excitatory to be similar to the double loop, the only change that changes successively of shunting switch is made up the Y-connection point position of pressure regulation winding, is not born whole load energy when shunting switch opens and closes, after shunting switch cut-offs fully, magnetic flux in two groups of tri-phase iron cores can not reduce to zero yet, and this has just created one with the big advantage of little control for on-load voltage regulation.When the utility model is used as voltage regulator, six secondary winding WA2 and WA1, WB2 and WB1, WC2 and WC1 along with three each tap positions of combination pressure regulation winding progressively when the power end direction is regulated, to generally take place-60 ° in twos between two secondary windings of Lian Jieing to 0 again to 120 ° variable angle, its two-end-point phase voltage also will be changed to 0 volt again to 33 volts from-11 volts, and this numerical string is associated in both can realize the voltage stabilizing output of power supply phase voltage at 231 volts to 187 volts scope internal burden ends in the three phase mains.Usually divide nine grades of adjustings just can realize+2 * 2.5% to-6 * 2.5%UH same on-load voltage regulation.When three combination pressure regulation windings of this type are installed on the 3rd group of tri-phase iron core in addition, can reduce the tired lock of wiring that a plurality of pressure regulation winding segments are alternately connected mutually and brought, this pressure regulation combination winding is established the magnetic circuit mode in addition and be easy to realize on-load voltage regulation in distribution transformer.

Positive effect of the present utility model is: hyperbolic folding wiring phase-shift voltage regulating mode can conveniently be carried out voltage-regulation in null value and the positive negative value scope, overcome contact Induction Regulation and on-load voltage regulation and handed over depressor to adopt device complexity and the many defectives of cost such as transition resistance, this complications phase shift system also is applicable to the special transformer of pressure regulation on a large scale.The zigzag connection mode that this combination pressure regulation winding is connected to six former limit main winding tie points can be also that realization has only made less adjusting tap end and adapted power electronic device such as bidirectional thyristor are realized the large-scale stepless pressure regulation, is suitable for and makes the high accuracy stable-pressure device.

Description of drawings:

Fig. 1, the utility model hyperbolic folding wiring schematic diagram.

Fig. 2, the utility model embodiment 1 winding connection figure.

Fig. 3, the utility model embodiment 2 winding connection figure.

Embodiment 1

Two groups of tri-phase iron cores of this example are arranged vertically, middle horizontal yoke core cross section is identical with stem stem up and down, the former limit winding WA1, WB1, the WC1 that are loaded on the top iron core become hexagon by identical same each extreme direction and according to WA1, WA2, WB1, WB2, WC1, WC2 closing in sequence successively with WB2, the WC1, the WA2 that are loaded on the bottom iron core, begin to draw respectively A1, C01, B1, A01, six terminals of C1, B01 from WA1 winding end of the same name.Six secondary winding WA1 and WA2, WB1 and WB2, WC1 with forward be series at respectively between A and A1, B and B1, C and C1 again after the non-same polarity of WC2 links to each other respectively.Three combination pressure regulation windings are composed in series by 10 pressure regulation winding complications respectively, its order of connection is: at the combination pressure regulation winding between C1 and C01 end by WB11 and WC21, WB12 and WC22, WB13 and WC23, WB14 and WC24, WB15 with after the end of the same name of WC25 is connected respectively, again successively with five pairs of windings in series, and in its WC21, WB12, WC22, WB13, WC23, WB14, WC24, a WB15 winding, draw C09, C08, C07, C06, C05, C04, eight shunting taps of C03, C02; Combination pressure regulation winding between A1 and A01 earlier WC11 and WA21, WC12 and WA22, WC13 and WA23, WC14 and WA24, WC15 with after the end of the same name of WA25 is connected respectively, again successively with its five pairs of windings in series, and in its WA21, WC12, WA22, WC13, WA23, WC14, WA24, WC15 winding, draw A09, A08, A07, A06, A05, A04, eight shunting taps of A03, A02; Combination pressure regulation winding between B1 and B01 earlier with WA11 and WB21, WA12 and WB22, WA13 and WB23, WA14 and WB24, WA15 with after the end of the same name of WB25 is connected respectively, again successively with five pairs of windings in series, and in eight windings of its WB21 to WA15, draw AB09, B08, B07, B06, B05, B04, eight shunting taps of B03, B02, component connects end points in the interior coldest days of the year end altogether together with C01, A01, B01.This side connects with 9 interchanges can device regulates end points with closed manners one by one with 9 groups and is closed into the neutral point mode that links to each other, it is closed to connect end points from A01, B01, C01 first component, realize the pressure regulation process of+5% phase voltage to-15% phase voltage successively, each pressure regulation class is 2.5% phase voltage.

Embodiment 2:

This example is arranged vertically with three groups of tri-phase iron cores and with cordwood system type, and its pressure regulation winding and iron core are loaded on the superiors.No longer the pressure regulation winding is made up in installing on the iron core of middle part and bottom, and three combinations of WA11 to WA25, the WB11 to WB25 in the last example, WC11 to WC25 pressure regulation winding is replaced by WA0, WB0, three of WC0 extract 8 end points out at the middle part integral form windings.Six former limit main windings that are loaded on middle part and bottom are identical with six the same examples of auxiliary winding connection order.Three whole shape pressure regulation winding WA0, WB0, WC0 extract A02 to A09, B02 respectively in the middle out, to eight shunting taps of B09, C02 to C09, three corresponding whole pressure regulation windings are connected in turn between A1 and A01, B1 and B01, C1 and three pairs of end points of C01.Regulation voltage mode and effect also are same as example.

But the utility model is formed closed-loop control system structure stable-pressure device together with voltage detecting link, s operation control link etc.

Claims

1, hyperbolic folding wiring phase-shift voltage regulating device, this voltage regulator is by six former limit main windings, six secondary windings, three combination pressure regulation windings, two to three groups of tri-phase iron cores and three to 15 three phase voltage regulating switches are formed, it is characterized in that: described six former limit main winding WA1, WA2, WB1, WB2, WC1, WC2 links to each other with next end of the same name by last one non-each end successively and is linked to be loop in proper order, tie point begins to be in turn C01 from the WA1 non-same polarity between its six former limit windings, B1, A01, C1, B01, A1, the combination pressure regulation winding that is connected between C1 and C01 two ends alternately is composed in series successively by three to 15 the pressure regulation windings that are respectively of corresponding WB1 and WC2 winding, the combination pressure regulation winding that is connected between B1 and B01 two ends is composed in series by interval mode successively by the pressure regulation winding of a same combination winding same number of corresponding WA1 and WB2 winding, the combination winding that is connected between A1 and A01 two ends is composed in series by interval mode successively by the pressure regulation winding of a same combination winding same number of corresponding WC1 and WA2 winding, six secondary winding WA1 and WA2, WB1 and WB2, WC1 be series at C successively after the end of the same name of WC2 is connected respectively, A, in the B three phase mains loop.

2. hyperbolic folding phase-shift voltage regulating device according to claim 1, it is characterized in that: described three combination pressure regulation windings can independently be installed on the 3rd group of tri-phase iron core, with drawing three to 15 shunting taps respectively, three combination pressure regulation windings two ends symmetry separately is connected on six connection end points between the winding of former limit each combination pressure regulation winding at it.