CN2594947Y - Lightningproof interference resistant capacity transformer - Google Patents
Lightningproof interference resistant capacity transformer Download PDFInfo
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- CN2594947Y CN2594947Y CN 02282751 CN02282751U CN2594947Y CN 2594947 Y CN2594947 Y CN 2594947Y CN 02282751 CN02282751 CN 02282751 CN 02282751 U CN02282751 U CN 02282751U CN 2594947 Y CN2594947 Y CN 2594947Y
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- paper tinsel
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Abstract
The utility model relates to a capacitive transformer preventing lightning stroke and interference. The utility model belongs to the transformer used for electrical distribution, rectification and an electrical source of electronic equipment. The utility model has the structure that windings on an iron-core column of each phase at one voltage side of the transformer or the windings on the iron-core column of each phase at different voltage sides can be lapped together by two sets of mutually insulated metal foil and can be coiled to become two concentric coils, namely, the transformer is composed of foil type double lap windings, and each coil of the two concentric coils is respectively connected in series with one of the two concentric coils of the windings on the iron-core column of the other phase at the same voltage side; the transformer can be formed by connecting the foil type double lap windings and the concentric coil, namely a signal lap winding, which is coiled by a conductor with insulation. The utility model has the advantages that the windings selves of the transformer have larger capacitance of capacitors connected in parallel, the number of wattless power compensating devices in an electric network can be reduced, the utility model can more effectively prevent the lightning stroke and the interference, and sensitivity for short circuit protection when the electric network is in single-phase short circuit is enhanced.
Description
Technical field
The invention belongs to the transformer that distribution is used, rectification is used and electronic equipment power source is used.
Background technology
At present, the connection of three-phase transformer winding nothing more than Y (comprise Y
0) connect, Δ connects and Z (comprises Z
0) connect three kinds of modes.
For the two volume of the three-phase of powering to the user in high-voltage fence distribution transformers, when the secondary low-voltage electrical network adopted three-phase four-wire system (TN-S or TN-C-S) system distribution, the mode of connection commonly used had Y/Y
0And Δ/Y
0Two kinds.Y/Y wherein
0The relative manufacturing cost of the transformer of the mode of connection is lower.But zero sequence impedance is bigger.When the secondary side single phase ground fault, short circuit current is less, has reduced the sensitivity of short-circuit protection.Simultaneously, asymmetric when secondary side three-phase power load, produce when containing bigger Zero-pharse harmonic electric current in big zero-sequence current or the power load, will in magnetic circuit, produce bigger secondary power loss, cause the magnetic circuit heating, reduce the power output of transformer, and increase power consumption.But also can induce zero sequence electromotive force and Zero-pharse harmonic electromotive force at primary side, pollute one time electrical network.Δ/Y
0The transformer of the mode of connection; zero sequence impedance is near positive sequence impedance and negative sequence impedance, the sensitivity of short-circuit protection in the time of can obviously not reducing the secondary side single-line to ground fault, and its zero sequence first-harmonic and harmonic current connect at Δ and produce circulation in the winding; still can cause additional copper loss, but compared with Y/Y
0Mode of connection zero sequence additional iron losses is little.The transformer lightning protection properties of above-mentioned two kinds of modes of connection is relatively poor.Especially Y/Y
0The mode of connection.When carrying out ripple (comprising direct lightning strike and induction thunder), thunder and lightning passes through Y along low-voltage circuit
0Connecing Transformer Winding and go into when ground, because its frequency and peak value are all very high, is again synchronous in three-phase circuit usually, can induce high overvoltage in the high pressure winding, jeopardizes high voltage electric equipment, and causes that easily Y connects the winding neutral point and punctures.Z-shaped or Z
0The shape mode of connection.The coil that promptly each winding of same voltage side or different voltage side is divided into two independent coilings, each coil are in certain sequence respectively with the series connection of one of coil of another phase.When carrying out ripple, synchronous thunder and lightning passes through Z along low-voltage circuit
0The transformer secondary winding of wiring is gone into when ground, and the electric current that passes through in two coils on each core limb is reverse, and therefore the resultant flux in the core limb that is produced by this electric current is zero, just can not induce high voltage in a winding, thereby eliminate damage to crops caused by thunder.In like manner, the higher harmonic current of zero sequence passes through Z
0During the wiring winding, can in a Y wiring winding, not induce in zero sequence electromotive force or the delta connection winding yet and produce circulation.
For secondary is the distribution transformer of isolated neutral system (IT), and the three-phase isolation transformer of other various uses, the power transformer of rectifier transformer and electronic equipment etc., and the mode of connection of its winding then all is to adopt △ to connect or Y (Y basically
0) the various combination mode that connects.
Single-phase transformer, except form unshakable in one's determination has the branch of " " font and shell-type, winding adopt wire-wound, paper tinsel around exceptionally, more do not have what special version, also be far from being anti-tampering, anti-lightning strike special measure.
The transformer of above-mentioned various different purposes, different winding connection methods all exists some unsurmountable shortcomings.
One, when three-phase transformer is once imported or secondary is output as symmetry load, each phase fundamental current numerical value is identical, and when phase difference is 120 °, the harmonic current of each phase triple-frequency harmonics and treble frequency thereof (comprises three, six, nine ... each time) just become the electric current that synchronous numerical value equates, just can be referred to as the Zero-pharse harmonic electric current.If each phase fundamental current numerical value does not wait, or its phase difference when not being 120 ° (for example two alternate power consumption equipments produce harmonic current) then the harmonic current of three times of each phase and treble frequency can be that same-phase, numerical value equate just not, just can not be referred to as Zero-pharse harmonic electric current (in like manner, too) to harmonic wave electromotive force, voltage.Harmonic current for this asymmetrical three times and treble frequency still can be divided into positive sequence, negative phase-sequence, three kinds of components of zero sequence.No matter the above-mentioned any combination mode of connection of transformer adopting can only play certain inhibitory action to the higher harmonic current or the electromotive force of zero sequence.Various high order harmonic components for positive sequence or negative phase-sequence (comprising three, five, seven each times) then do not have inhibitory action (not considering the inhibitory action of transformer impedance).
Its two, existing range transformer, every mutually every side winding no matter be wire-wound or paper tinsel around, still be that two coils are formed by a coil, its each coil all is independent coiling, it is perceptual that transformer all is.Its perceptual reactive loss is much larger than active loss.And most loads also are inductive load in the electrical network.Thereby the access of transformer can only increase the reactive power consumption of whole electric power system, the power factor of reduction electrical network, the active loss that increase causes therefrom.Individual layer paper tinsel formula winding though have turn-to-turn capacitance between every circle coil, because turn-to-turn voltage is very low, so its capacitance is very little, is ignored usually.So power department all requires to increase reactive power compensation device with electric unit, to improve its power factor, the electric grid investment of Zeng Jiaing is very considerable therefrom.
Also once the someone proposed, the low pressure winding of distribution transformer adopts foil coil, with the metal forming of coil with add between another additional metal forming carry out behind the insulating barrier and around, form one group of very big electric capacity, by changing two and connect around the tap of foil coil, come the voltage between the two-layer Copper Foil of conversion, thereby realize the adjusting of capacitance.Although this way can make transformer become capacitive by perception, by its next lagging reactive power that partly compensates in the low voltage electric network, yet there is tangible irrationality, as:
(1) additional Copper Foil and insulating barrier are added in the winding of transformer, will increase winding and size unshakable in one's determination greatly, materials and cost, and make each top parameter of transformer, and performance depreciation, loss strengthens.The copper loss, the iron loss that but have been increased transformer inside by the benefit that reactive power compensation obtained that additional capacitor obtained are offset.
(2) distribution transformer itself is a power-supply device, and is very high to reliability requirement.And capacitor is the not too high auxiliary device of reliability, and it is low than transformer also to the requirement of insulation.It is appended to transformer inside, reduced the reliability of transformer in rain.
The somebody proposes every phase winding of same voltage side two groups of metal formings and two ceoncentrically wound coils of coiled with mutual insulating are together in series it from beginning to end.So just add 1/2 phase voltage between the formed capacitor plate of double layer of metal paper tinsel of this phase winding, thereby obtain very big capacitance, can improve the power factor of electrical network.
Yet this electric capacity is connected in the phase winding, partly connects with every phase inductance, plays the effect that reduces transformer induction reactance.Usually building-out capacitor should be shunt capacitance.Series capacitance can only produce the effect of amplifying conducting to lightning wave, disturbing wave, be unfavorable for anti-lightning strike jamming-proof.Simultaneously series capacitance has reduced the impedance drop of transformer, can increase short circuit current, and switching devices and protective device are adjusted and had a negative impact.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, a kind of winding construction that relies on transformer self is provided, obtain very big shunt capacitance capacity, make it to present leading power factor.And can carry out ripple and high order harmonic component by two-way effectively inhibition thunder and lightning, increase substantially the lightning protection properties and the Electro Magnetic Compatibility of electric equipment in the electrical network, electronic equipment.
The technical solution adopted for the present invention to solve the technical problems is: a kind of capacitive transformer preventing thunderstruck and interference, its structure includes iron core, winding on winding on each phase core limb of a voltage side of this transformer or each phase core limb of different voltage side can be that two groups of metal formings with mutual insulating stack togather and around getting up to become two ceoncentrically wound coils, are the two repeatedly windings of paper tinsel formula.And each coil of these two ceoncentrically wound coils all respectively with another one of two ceoncentrically wound coils series connection of winding on core limb mutually of same voltage side; The winding of a voltage side of this transformer or the winding of different voltage side also can be to connect and compose the winding of band along the limit with the two repeatedly windings of above-mentioned paper tinsel formula with the promptly single repeatedly winding of coil of conductor coiled of tape insulation
This transformer can be three-phase transformer or single-phase transformer.
Advantage of the present invention is:
(1) Transformer Winding self has very big shunt capacitance capacity, can reduce the quantity and the investment of reactive power compensation device in the electrical network.
(2) flow through hexagon or (Z) Z when synchronous zero sequence fundamental current or higher harmonic current
0During the connection winding, the sense of current in two coils of each winding is opposite.Therefore the composite magnetic power that generates in iron core of this electric current is zero, can not produce zero sequence electromotive force or zero sequence circulation in the opposite side winding; Simultaneously, the electromotive force phase difference of two coils of every phase winding is 60 °, and the phase difference during treble frequency then is 180 °, becomes oppositely to cancel each other, and can eliminate zero sequence odd harmonic electromotive force effectively.Thereby restrained topmost interference harmonic components in the electrical network.
(3). the two repeatedly winding constructions of paper tinsel formula, each circle coil all exists inductance and alternate shunt capacitance, has formed large-capacity distributing as shown in Figure 5 from being coupled L-C cascade filtering circuit.Because the inductance of every circle coil is equal substantially, and the diameter difference of every circle coil makes capacitance different, thereby has formed a cascade wideband resonance circuit with different resonance frequencys again.As long as suitably the inductance L of each voltage side winding and the parameter matching of capacitor C are adjusted in design, just can obtain resonance frequency (band) at certain subharmonic of suppressing of want.So, for those each time main interference harmonic wave electromotive force and electric currents, just can be effectively suppressed whereby, and avoid causing on the contrary the harmonic wave amplification by the non-zero sequence of the indelible remainder of above-mentioned winding connection mode institute; The two, the phenomenon that also can avoid high-frequency current to slip over from single thoughts filter capacitor two ends, the three can also prevent ferro resonance.
(4). can more effectively isolate synchronous thunder and lightning and carry out ripple.
(5). the zero sequence reactance that can make transformer is zero, thus the sensitivity of short-circuit protection when improving power grid single-phase short circuit, and eliminate the supplementary load loss of zero sequence first-harmonic and harmonic wave.
Description of drawings
Fig. 1 is the two repeatedly winding construction schematic diagrames of paper tinsel formula of the present invention;
Fig. 2 a is the Z-shaped winding connection schematic diagram of the present invention;
Fig. 2 b is the electromotive force vectogram of Fig. 2 a connected mode;
Fig. 3 a is a hexagon winding connection schematic diagram of the present invention;
Fig. 3 b is the electromotive force vectogram of Fig. 3 a connected mode;
Fig. 4 a is a double triangle winding connection schematic diagram of the present invention;
Fig. 4 b is the electromotive force vectogram of Fig. 4 a connected mode;
Fig. 5 is a L-C cascade filtering equivalent circuit diagram;
Fig. 6 a is the two repeatedly winding connection schematic diagrames of single-phase transformer list paper tinsel formula of the present invention;
Fig. 6 b is the two repeatedly winding connection schematic diagrames of the two paper tinsel formulas of single-phase transformer of the present invention;
Fig. 7 a is that the present invention prolongs the Z-shaped winding connection schematic diagram in limit;
Fig. 7 b is the electromotive force vectogram of Fig. 7 a connected mode;
Fig. 8 a is that the present invention prolongs limit hexagon winding connection schematic diagram;
Fig. 8 b is the electromotive force vectogram of Fig. 8 a connected mode;
Fig. 9 a is an extend-triangle winding connection schematic diagram of the present invention;
Fig. 9 b is the electromotive force vectogram of Fig. 9 a connected mode;
Figure 10 a is the Z-shaped limit hexagon winding connection schematic diagram that prolongs of the present invention;
Figure 10 b is the electromotive force vectogram of Figure 10 a connected mode;
Figure 11 a is that the present invention prolongs limit double triangle winding connection schematic diagram;
Figure 11 b is the electromotive force vectogram of Figure 11 a connected mode;
Figure 12 a is the one-sided two repeatedly winding connection schematic diagrames of the single paper tinsel formula in limit that prolong of single-phase transformer of the present invention;
Figure 12 b is the one-sided two repeatedly winding connection schematic diagrames of the two paper tinsel formulas in limit that prolong of single-phase transformer of the present invention;
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail:
At first the transformer low voltage winding is described.
Shown in Figure 1 is the structure of winding of the present invention.The present invention is with a layer insulating 3, layer of metal paper tinsel 2, and another layer insulating 3, another layer metal forming 2 isolation mutually coincide, and is wound on (insulating cylinder 1 also can itself be formed by first floor insulating barrier 3 in this) on the interior insulating cylinder 1.Coiling finishes and wraps external insulation layer 3 on winding outer layer metal paper tinsel 2 surfaces again.(also metal forming 2 can be placed on the innermost layer, the outer field insulating barrier 3 in back of reeling forms the external insulation layer of winding naturally, suitably coats the reinforced insulation material again).Binding post 4 is drawn at each coil two ends respectively.Also can draw the tapped binding post 4 of varying number as required.The insulating barrier 3 of winding can adopt the paper or the film of organic or inorganic material, also can form insulating barrier 3 at metal forming 2 surface-coated insulating barriers or with chemical treatment.Winding hereinafter to be referred as this structure is the two repeatedly windings of paper tinsel formula.Between these two coils, just there is capacitor C.Couple together by following three kinds of basic modes of connection then:
Fig. 2 a is depicted as Z (Z
0) the shape mode of connection.Usually the winding that is connected on three-phase four-wire system or three-phase five-wire mode system one side adopts this kind connection.The two repeatedly windings of a paper tinsel formula are all arranged on the every phase core limb of the transformer of same voltage side, six coils of the two repeatedly windings of three paper tinsel formulas are connected by the following mode of connection: be i.e. the first coil head end A of first phase winding
1The second coil head end C with the third phase winding
2Link to each other; The first coil head end B of second phase winding
1The second coil head end A with first phase winding
2Link to each other; The first coil head end C of third phase winding
1The second coil head end B with second phase winding
2Link to each other; The first coil tail end X with first, second, third 3 windings
1, Y
2, Z
1Link to each other as neutral terminal.The second coil tail end X with first, second, third 3 windings
2, Y
2, Z
2As phase terminal.Perhaps press other direction, A
1Meet B
2, B
1Meet C
2, C
1Meet A
2And X
1, Y
1, Z
1And X
2, Y
2, Z
2Also can change its connected mode and lead-out mode mutually.
From Fig. 2 b electromotive force vectogram as can be seen, after energized, in loop A
1X
1And A
2X
2, B
1Y
1And B
2Y
2, C
1Z
1And C
2Z
2Between, promptly just there is very high voltage between two of capacitor C pole plates, its value equals the phase voltage U of system
X1A1Total shunt capacitance capacity of these side three phase windings is Q
C=3U
2 X1A1/ X
C(X
CBe the capacitive reactance under this mains frequency).Be not difficult to find out, as long as the width and thickness and the insulation thickness of appropriate design core dimensions and coil turn, metal forming; Just can obtain enough big capacitance, make transformer become a capacitive element.
Fig. 3 a is depicted as hexagon
The mode of connection.Usually the winding that is connected on three-phase three-wire system system one side can adopt this kind connection.The two repeatedly windings of a paper tinsel formula are all arranged on every phase core limb of the same voltage side of transformer, six coils of the two repeatedly windings of three paper tinsel formulas are connected by the following mode of connection: be i.e. the first coil head end A of first phase winding
1The second coil head end C with second phase winding
2Link to each other; The second coil tail end Z of third phase winding
2The first coil tail end Y with second phase winding
1Link to each other; The first coil head end B of second phase winding
1The second coil head end A of first phase winding
2Link to each other; The second coil tail end X of first phase winding
2With the third phase winding with line coil tail end Z
1Link to each other; The first coil head end C of third phase winding
1The second coil head end B with second phase winding
2Link to each other; The second coil tail end Y of second phase winding
2The first coil tail end X with first phase winding
1Link to each other.Perhaps press other direction, A
1Meet B
2, Y
2Meet Z
1, C
1Meet A
2, X
2Meet Y
1, B
1Meet C
2, Z
2Meet X
1Draw phase terminal from any three non-conterminous tie points.
From Fig. 3 b electromotive force vectogram as can be seen, after energized, in loop A
1X
1With A
2X
2, B
1Y
1With B
2Y
2, C
1Z
1With C
2Z
2Between, promptly the voltage between the two-plate of electric capacity is the system line voltage U
L1L2As everyone knows, grid line voltage is 3 times of the √ of phase voltage.And capacitance be with its pole plate between the institute alive square be directly proportional.Suppose hexagon
The capacitor C of connection and two windings of Z-connection equates that the former is bigger 3 times than the latter's capacitance.Common still more hexagon
The winding of wiring is more than the umber of turn of Z wiring, and actual capacitance ratio can be above 3 times.
Fig. 4 a is depicted as the hexagon connection mode.When transformer secondary side direction six phase bridge-type rectifiers or motor power supply, can adopt this kind connection.The two repeatedly windings of a paper tinsel formula are arranged on every phase core limb of the same voltage side of transformer.With the two repeatedly windings of this paper tinsel formula each mutually first group of coil connect into delta connection by positive sequence: i.e. A
1Meet Y
1, B
1Meet Z
1, C
1Meet X
1With the two repeatedly windings of this paper tinsel formula each mutually second group of coil connect into delta connection by negative phase-sequence: i.e. A
2Meet Z
2, B
2Meet X
2, C
2Meet Y
2Six summit A with two groups of delta windings
1(Y
1), A
2(Z
2), B
1(Z
1), B
2(X
2), C
1(X
1), C
2(Y
2) as external terminal.
Fig. 4 b is the electromotive force vectogram of Fig. 4 a mode of connection.Institute's making alive is 1/ √ 3 of every phase coil electromotive force between the formed electric capacity two-plate of two coils of the two repeatedly windings of each paper tinsel formula.Also can obtain bigger shunt capacitance capacity.
In concrete the application, can take appropriate transformer connection compound mode according to different system's pattern, electric pressure and part throttle characteristics, above-mentioned two kinds of winding construction patterns and the mode of connection are used for a certain side or the bilateral of transformer, in the hope of reaching optimal result of use.
Shown in Fig. 6 a, the two repeatedly windings of a paper tinsel formula are arranged on a phase core limb of the same voltage side of single-phase transformer, two repeatedly two coils of winding of this paper tinsel formula are together in series by electromotive force superposition principle, i.e. A
1Meet X
2, two terminal A of head and the tail
2, X
1As outer lead wire terminal.So, just there is electric capacity between this two coil, institute's making alive is 1/2U between the electric capacity two-plate
L1L2(U
L1L2Be supply voltage).Thereby obtain bigger shunt capacitance capacity Q
C
Shown in Fig. 6 b, the same voltage side of single-phase transformer one mutually or two paper tinsel formulas two repeatedly winding A and B are arranged on the two-phase core limb; Each winding is divided into two coils again.So, just have electric capacity between this two coil.Winding A and B are enclosed within respectively on two side columns of " " font or " day " shaped iron core, perhaps are enclosed within on the center pillar of " day " font iron core.Press the principle of electromotive force superposition then, after first coil series connection of first coil of first winding with second winding, connect with second coil of first winding again, and then second coil series connection of second winding together, two terminals of head and the tail are as outer lead wire terminal.Head end A as first winding, first coil
1Tail end Y with second winding, first coil
1Link to each other; The head end B of second winding, first coil
1With first winding, the second coil tail end X
2Link to each other; The head end A of first winding, second coil
2Tail end Y with second winding, second coil
2Link to each other; Tail end X with first winding, first coil
1Head end B with second winding, second coil
2As outer lead wire terminal.Like this, the voltage that is added on two pole plates of electric capacity equals 1/2U
L1L2(U
L1L2Be supply voltage).Thereby obtain bigger shunt capacitance capacity Q
C
Though this single-phase winding connection method itself can not harmonic carcellation, appropriate design, adjust the shunt capacitance and the inductance of winding, can partly suppress to disturb harmonic wave and absorb thunder and lightning and carry out ripple, and improve power factor.Has tangible advantage compared with existing single-phase transformer.
Secondly, the transformer high-voltage winding is described.
If the high pressure winding is simply applied mechanically above-mentioned three-phase Z-shaped or hexagon wiring or the single-phase two repeatedly winding constructions of paper tinsel formula, then the voltage between its electric capacity the two poles of the earth will be respectively the phase voltage or the line voltage of electrical network.For making insulation can bear so high voltage, certainly will increase its thickness and winding size, materials, cost are increased greatly, be infeasible.For this reason, the invention provides six kinds of technical schemes.Its common feature is, the high pressure winding of every phase core limb be divided into the two repeatedly windings of paper tinsel formula and single repeatedly winding (paper tinsel around or wire-wound all can) two parts.Can adopt following six kinds of modes of connection:
First kind shown in Fig. 7 a, for prolonging the Z-shaped wiring in limit.The two repeatedly windings of a paper tinsel formula and list winding that changes is arranged on the every phase core limb of the same voltage side of three-phase transformer, and connect by the following mode of connection: six winding wiring methods of the two repeatedly windings of its three-phase paper tinsel formula are identical with Fig. 2 aZ shape connection.Be three external terminal X at Z-shaped wiring winding
2, Y
2, Z
2On the one group of single repeatedly winding of connecting again.As with X
2Meet A
3, Y
2Meet B
3, Z
2Meet C
3Single repeatedly other end X of winding
3, Y
3, Z
3As the phase line external terminal.Its electromotive force vectogram is then shown in Fig. 7 b.Also can be with X
2Meet Y
3, Y
2Meet Z
3, Z
2Meet X
3A
3, B
3, C
3Make external terminal.The principle that winding connects is: the electromotive force vector of the single repeatedly winding of each that is connected is with the electromotive force vector phase angle unanimity of two repeatedly one of the winding coils of two paper tinsel formulas of this phase of series connection with it.When electrical network requires should adopt this kind wiring when this side winding of transformer has the ground connection central point.Its advantage and Z-shaped wiring are basic identical, and being most of voltage is born by prolonging the single repeatedly winding in limit, thereby are added in the two voltages that change between two electric capacity two-plates that coil constituted of winding of paper tinsel formula and greatly reduce.
Second kind shown in Fig. 8 a, for prolonging limit hexagon wiring.The two repeatedly windings of a paper tinsel formula and list winding that changes is arranged on the every phase core limb of the same voltage side of three-phase transformer, and connect by the following mode of connection: two repeatedly six coils of winding of its three-phase paper tinsel formula are connected into as Fig. 3 a hexagon mode of connection, the list of just on three non-conterminous splicing ears of its six coils, respectively the connecting winding that changes, make each single repeatedly electromotive force vector of winding point to the extension cord direction of this splicing ear and electromotive force vectogram hexagon central point line respectively, shown in the embodiment of Fig. 8 b, i.e. X
1Same Z
3Link to each other; Y
1Same X
3Link to each other; Z
1Same Y
3Link to each other.The change other end A of winding of three lists
3, B
3, C
3As phase terminal.The pluses and minuses of this connection are basic identical with the hexagon wiring, and being most of voltage is born by prolonging the single repeatedly winding in limit, thereby are added in the two voltages that change between two electric capacity two-plates that coil constituted of winding of paper tinsel formula and greatly reduce.
The third is the extend-triangle wiring shown in Fig. 9 a.The two repeatedly windings of a paper tinsel formula and list winding that changes is arranged on the every phase core limb of the same voltage side of three-phase transformer, and connect by the following mode of connection: two first coils that change winding of its three-phase paper tinsel formula connect into the delta connection mode, as with A
1Meet Y
1, B
1Meet Z
1, C
1Meet X
1After the winding same-phase that respectively second coil of the two repeatedly windings of paper tinsel formula and list on the same core limb mutually changed is connected, the tail end of each second coil is connected with the two repeatedly tie points of two first coils of windings of paper tinsel formula on the homophase core limb not, as will single repeatedly tail end X of winding
3, Y
3, Z
3Respectively with two repeatedly head end A of winding
2, B
2, C
2After linking to each other, again will two repeatedly three tail end X of winding
2, Y
2, Z
2Same respectively Z
1, X
1, Y
1Link to each other.The change other end A of winding of three lists
3, B
3, C
3As phase terminal.Fig. 9 b is depicted as the electromotive force vectogram of this mode of connection.This mode of connection has the basic characteristics of delta connection.Being most of voltage is born by prolonging the single repeatedly winding list in the limit winding that changes, thereby is added in the two voltages that change between two electric capacity two-plates that coil constituted of winding of paper tinsel formula and greatly reduces.
The 4th kind shown in Figure 10 a, prolong limit hexagon wiring for Z-shaped.The two repeatedly windings of two paper tinsel formulas and list winding that changes is arranged on the every phase core limb of the same voltage side of three-phase transformer, connect by the following mode of connection: six coils in two groups of two windings that change of three-phase paper tinsel formula are connected into the hexagon connection, meet C1 as A1, Z1 meets Y1, and B1 meets A3, and X3 meets Z3, C3 meets B3, and Y3 meets X1.In addition six coils are connected into three groups by two flangings of being together in series of in-phase coil not, A2 meets C2, and B2 meets A4, and C4 meets B4, being serially connected in three summits of hexagon winding and three respectively, to prolong the limit single repeatedly between the winding, X2 meets Z1, and Z2 meets X5, and Y2 meets Z3, X4 meets Y5, Z4 meets Y3, and Y4 meets Z5, constitutes Z-shaped shown in Figure 10 b electromotive force vectogram and prolongs limit hexagon wiring.The principle of its wiring is: two repeatedly two coils of winding of each paper tinsel formula have one to be connected in the hexagon winding, and another is connected on complications and prolongs in the limit, make institute's making alive between these two coil Copper Foils equal 3 times of the √ of each coil voltage.This Z-shaped limit hexagon connection of prolonging can obtain big shunt capacitance capacity, and compared with the single limit hexagon connection of prolonging, its capacitance will be twice.
The 5th kind shown in Figure 11 a, for prolonging the limit hexagon connection.When transformer secondary side direction high pressure three-phase bridge-type rectifier or high-tension motor power supply, can adopt this kind connection.The two repeatedly windings of two paper tinsel formulas and two lists winding that changes is arranged on the every phase core limb of the same voltage side of three-phase transformer.This kind mode of connection is actually by two groups of extend-triangle windings and constitutes.Only first delta windings connects by positive sequence, and second delta windings connects (same Fig. 4) by negative phase-sequence.Connect into the triangle connected mode by two repeatedly first coils of winding of same group of three-phase paper tinsel formula in each extend-triangle winding, the winding same-phase that respectively second coil of the two repeatedly windings of this three-phase paper tinsel formula and list on the same core limb the changed Hou of connect is connected pair the change tie points of two first coils of windings of paper tinsel formula on the tail end of each second coil and the homophase core limb not.As with X
1Meet C
1, Z
1Meet B
1, Y
1Meet A
1, X
3Meet A
2, X
2Meet Z
1, Y
3Meet B
2, Y
2Meet X
1, Z
3Meet C
2, Z
2Meet Y
1X
4Meet B
4, Y
4Meet C
4, Z
4Meet A
4, A
6Meet X
5, A
6Meet X
5, A
5Meet Y
4, B
6Meet Y
5, B
5Meet Z
4, C
6Meet Z
5, C
5Meet X
4A
3, B
3, C
3, X
6, Y
6, Z
6As external terminal.
The 6th kind shown in Figure 12 a, for prolonging limit single-phase transformer simplex winding wiring.The two repeatedly windings of a paper tinsel formula and list winding that changes is arranged on the same voltage side one phase core limb of single-phase transformer, and connect by the following mode of connection: the two repeatedly windings of paper tinsel formula are identical with Fig. 6 a mode of connection, again by electromotive force superposition principle list winding that changes of connecting, as X
1Meet A
3, X
3With A
2As outer lead wire terminal.Or shown in Figure 12 b, prolong limit single-phase transformer double winding wiring.The same voltage side of single-phase transformer one mutually or the two repeatedly windings of two paper tinsel formulas and list winding that changes arranged on the two-phase core limb.The two repeatedly windings of paper tinsel formula are identical with Fig. 6 b mode of connection, again by electromotive force superposition principle list winding that changes of connecting, as X
1Meet A
3, B
2Meet Y
3, X
3With B
3As outer lead wire end.Can reduce the voltage between the electric capacity two-plate like this, obtain bigger shunt capacitance capacity.This list repeatedly winding can be one section, also can be divided into two sections or multistage, is serially connected in two repeatedly two mains sides of winding of paper tinsel formula.
As long as according to the withstand voltage level of the height of electrical network rated voltage, insulating material with to the requirement of transformer runnability, reasonably choose the different modes of connection and single winding and two repeatedly turn ratios between the winding of paper tinsel formula of changing, just can make transformer obtain good economic and technical norms and rational capacitance.
Claims (13)
1. capacitive transformer preventing thunderstruck and interference, its structure includes iron core, it is characterized in that winding on each phase core limbs of winding on each phase core limb of a voltage side of this transformer or different voltage side stacks togather with two groups of metal formings of mutual insulating and coiled is that two ceoncentrically wound coils become the two repeatedly windings of paper tinsel formula, simultaneously each coil of two ceoncentrically wound coils respectively with another one of two ceoncentrically wound coils of winding series connection on core limb mutually of same voltage side.
2. transformer according to claim 1 is characterized in that the two repeatedly windings of paper tinsel formula and list with the conductor coiled of tape insulation on each phase core limbs of two repeatedly windings of paper tinsel formula on another phase core limb of a voltage side of transformer or the different voltage side winding that changes is connected the wiring winding that the structure band prolongs the limit.
3. transformer according to claim 1 is characterized in that transformer can be three-phase transformer or single-phase transformer.
4. according to claim 1 or 3 described transformers, it is characterized in that all having on every phase core limb of the same voltage side of three-phase transformer the two repeatedly windings of a paper tinsel formula, two repeatedly six coils of winding of three paper tinsel formulas are connected into following Z-shaped wiring: the first coil head end of first phase winding links to each other with the second coil head end of third phase winding; The first coil head end of second phase winding links to each other with the second coil head end of first phase winding; The first coil head end of third phase winding links to each other with the second coil head end of second phase winding; The first coil tail end of three phase windings couples together into neutral terminal, and the second coil tail end of three phase windings is respectively as phase terminal.
5. according to claim 1 or 3 described transformers, it is characterized in that on every phase core limb of the same voltage side of three-phase transformer the two repeatedly windings of a paper tinsel formula being arranged all, two repeatedly six coils of winding of three paper tinsel formulas are connected into following hexagon
Wiring: the first coil head end of first phase winding links to each other with the second coil head end of third phase winding; The second coil tail end of third phase winding links to each other with the first coil tail end of second phase winding; The first coil head end of second phase winding links to each other with the second coil head end of first phase winding; The second coil tail end of first phase winding links to each other with the first line tail end of third phase winding; The first coil head end of third phase winding links to each other with the second coil head end of second phase winding; The second coil tail end of second phase winding links to each other with the first coil head end of first phase winding; Draw phase terminal from three non-conterminous tie points.
6. according to claim 1 or 3 described transformers, it is characterized in that having on the phase core limb of the same voltage side of single-phase transformer the two repeatedly windings of a paper tinsel formula, two repeatedly two coils of winding of this paper tinsel formula are to be together in series by electromotive force superposition principle, with its head and the tail two ends as external terminal.
7. according to claim 1 or 3 described transformers, it is characterized in that the same voltage side of single-phase transformer one mutually or the two repeatedly windings of two paper tinsel formulas are arranged on the two-phase core limb, four coils of two two repeatedly windings of paper tinsel formula connect by the following mode of connection: press electromotive force superposition principle, after first coil series connection of first coil of first winding with second winding, connect with second coil of first winding again, and then second coil series connection of second winding together, two terminals of head and the tail are as external terminal.
8. according to claim 2 or 4 described transformers, it is characterized in that having on the every phase core limb of the same voltage side of three-phase transformer the two repeatedly windings of a paper tinsel formula and list winding that changes, and connect by the following mode of connection: two repeatedly six coils of winding of its three-phase paper tinsel formula are connected into the Z-shaped mode of connection as claimed in claim 4, list of series connection winding that changes on three external terminals of this Z-shaped wiring winding, make the electromotive force vector phase angle unanimity of the electromotive force vector of each single repeatedly winding with two repeatedly one of the winding coils of two paper tinsel formulas of this phase of series connection with it, the other end of single repeatedly winding is as phase terminal.
9. according to claim 2 or 5 described transformers, it is characterized in that having on the every phase core limb of the same voltage side of three-phase transformer the two repeatedly windings of a paper tinsel formula and list winding that changes, and connect by the following mode of connection: two repeatedly six coils of winding of its three-phase paper tinsel formula are connected into the hexagon mode of connection, the list of on its three non-conterminous splicing ears, respectively the connecting winding that changes, make each single repeatedly electromotive force vector of winding point to the extension cord direction of this splicing ear and electromotive force vectogram hexagon central point line respectively, the other end of single repeatedly winding is as phase terminal.
10. transformer according to claim 1 and 2, it is characterized in that having on the every phase core limb of the same voltage side of three-phase transformer the two repeatedly windings of a paper tinsel formula and list winding that changes, and connect by the following mode of connection: two repeatedly first coils of winding of its three-phase paper tinsel formula connect into the delta connection mode, after the winding same-phase that respectively second coil of the two repeatedly windings of paper tinsel formula and list on the same core limb mutually changed is connected, the tail end of each second coil is connected with the two repeatedly tie points of two first coils of windings of paper tinsel formula on the homophase core limb not, and three lists change the other end of winding as phase terminal.
11. according to claim 2 or 6 described transformers, it is characterized in that having on the every phase core limb of the same voltage side of three-phase transformer the two repeatedly windings of two paper tinsel formulas and list winding that changes, connect by the following mode of connection: six coils in two groups of two repeatedly windings of three-phase paper tinsel formula are connected into the hexagon connection, in addition six coils are connected into three groups by two flangings of being together in series of in-phase coil not, being serially connected in three summits of hexagon winding and three respectively, to prolong the limit single repeatedly between the winding, constitute the Z-shaped limit hexagon wiring of prolonging, one of two coils of the two repeatedly windings of each paper tinsel formula are connected in the hexagon winding, and another is connected on Z-shaped prolonging in the limit.
12 according to claim 2 or 6 described transformers, it is characterized in that having on the same voltage side one phase core limb of single-phase transformer the two repeatedly windings of a paper tinsel formula and one or two single repeatedly winding, two repeatedly two coils of winding of this paper tinsel formula are pressed electromotive force superposition principle series connection Hou again with single repeatedly windings in series, this list repeatedly winding can be one section, also can be divided into two sections or multistage, be serially connected in two repeatedly two mains sides of winding of paper tinsel formula.
13. according to claim 2 or 6 described transformers, it is characterized in that the two repeatedly windings of two paper tinsel formulas and one or two single windings that change are arranged on same voltage side one phase of single-phase transformer or the two-phase core limb, connect by the following mode of connection: two principle interconnections that two repeatedly four coils of winding of paper tinsel formula are pressed the electromotive force superposition, again with single repeatedly windings in series, this list repeatedly winding can be one section, also can be divided into two sections or multistage, be serially connected in two repeatedly two mains sides of winding of paper tinsel formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02282751 CN2594947Y (en) | 2002-11-01 | 2002-11-01 | Lightningproof interference resistant capacity transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02282751 CN2594947Y (en) | 2002-11-01 | 2002-11-01 | Lightningproof interference resistant capacity transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2594947Y true CN2594947Y (en) | 2003-12-24 |
Family
ID=33744770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02282751 Expired - Lifetime CN2594947Y (en) | 2002-11-01 | 2002-11-01 | Lightningproof interference resistant capacity transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2594947Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433209C (en) * | 2002-11-01 | 2008-11-12 | 尤大千 | Lightning protection antiinterference capactive transformer |
| CN104038084A (en) * | 2013-03-08 | 2014-09-10 | 英飞凌科技股份有限公司 | Rectifier Circuit |
| CN105513761A (en) * | 2014-10-16 | 2016-04-20 | 致茂电子(苏州)有限公司 | Transformer |
| CN105513766A (en) * | 2016-01-06 | 2016-04-20 | 沈阳飞驰电气设备有限公司 | Quadripartion photovoltaic power generation lightning protection pre-assembled transformer substation |
-
2002
- 2002-11-01 CN CN 02282751 patent/CN2594947Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433209C (en) * | 2002-11-01 | 2008-11-12 | 尤大千 | Lightning protection antiinterference capactive transformer |
| CN104038084A (en) * | 2013-03-08 | 2014-09-10 | 英飞凌科技股份有限公司 | Rectifier Circuit |
| CN104038084B (en) * | 2013-03-08 | 2017-01-04 | 英飞凌科技股份有限公司 | Rectification circuit |
| CN105513761A (en) * | 2014-10-16 | 2016-04-20 | 致茂电子(苏州)有限公司 | Transformer |
| CN105513766A (en) * | 2016-01-06 | 2016-04-20 | 沈阳飞驰电气设备有限公司 | Quadripartion photovoltaic power generation lightning protection pre-assembled transformer substation |
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