CN205508602U - It holds pressure regulating distribution transformer to have to carry to transfer - Google Patents
It holds pressure regulating distribution transformer to have to carry to transfer Download PDFInfo
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- CN205508602U CN205508602U CN201620095499.3U CN201620095499U CN205508602U CN 205508602 U CN205508602 U CN 205508602U CN 201620095499 U CN201620095499 U CN 201620095499U CN 205508602 U CN205508602 U CN 205508602U
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Abstract
The utility model provides an it holds pressure regulating distribution transformer to have to carry to transfer, includes low voltage winding and high voltage winding, by drawing forth high pressure transition winding and low pressure transition winding among high voltage winding and the low voltage winding respectively, the combination transformation ratio of high pressure transition winding and low pressure transition winding is 9.5: 0.4~10.5: 0.4kV, passing through winding and low pressure transition winding with the high pressure and inserting and transfer the switching in -process that holds the powerstat, when carrying out capacity or voltage gear when switching over, the winding access circuit that will pass through realizes transferring and holds the switch and excise from the circuit with the gear switch, does not have the electric current when making accent appearance switch and gear switch motion. This transformer passes through transformer high voltage winding " Y - DELTA " conversion and low voltage winding " connection in series -parallel " conversion to realize transferring and hold the purpose, by drawing forth the combination of a set of transformation ratio among the high low voltage winding, through switch break -make order, insert this transformation ratio combination and transfer the switching in -process that holds the powerstat, with this transition resistance who replaces the switch, swap the requirement of holding voltage regulating switch with the reduction.
Description
Technical field
This utility model relates to a kind of loaded capacity regulating voltage regulating distribution transformer, belongs to distribution transformer technical field.
Background technology
Existing loaded capacity-regulated transformer is all to realize loaded capacity-regulated by loaded capacity-regulated switch, and existing loaded capacity-regulated switch is broadly divided into two classes, one class is that motor is as power source, another kind of employing permanent magnet mechanism is as power source, to drive shunting switch to realize transformer high-voltage winding " Y-Δ " conversion and low pressure winding " connection in series-parallel " conversion, thus realize capacity transfer purpose.
First kind capacitance switch uses driven by motor conversion, owing to electric machine rotation is relatively slow, changes volume flow rate degree slow, for avoiding power-off in handoff procedure, then must connect with transition resistance R between major-minor moving contact, and this resistance is easy to burn out.For avoiding this situation, also need corresponding protection device, so that capacitance-adjustable transformer volume is relatively big, relatively costly.Being easily generated electric arc when changing appearance, life-time service causes the especially low-pressure contact ablation of high-low pressure contact serious, easily loose contact, insulating oil easily cracking, and insulation declines.Meanwhile, traditional capacitance switch limits due to the reason such as volume, profile, is generally disposed at transformator side, causes low-voltage lead its imbalance long, causes supplementary transformer loss increase, low-pressure direct to hinder the problems such as uneven.
Equations of The Second Kind capacitance switch drives conversion by permanent magnet mechanism, is subdivided into two kinds of structures, a kind of employing vacuum negative control switch, cuts off the electricity supply or load, it is achieved not charged switching or small area analysis switching during capacity transfer or pressure regulation.But time in its handoff procedure, secondary side needs power-off, when not meeting switching, low-voltage load side powers not interrupt request.Another kind of addition transition resistance, in handoff procedure, by transition resistance loop UNICOM circuit, it is ensured that power supply continuity, the shortcoming can equally with an above-mentioned class.
Summary of the invention
Realizing, by loaded capacity-regulated switch, the deficiency that loaded capacity-regulated technology exists for existing loaded capacity-regulated transformer, this utility model provides a kind of loaded capacity-regulated transformer that can reduce to the specification requirement of loaded switch, the loaded capacity regulating voltage regulating distribution transformer that reduces transformer loss.
Loaded capacity regulating voltage regulating distribution transformer of the present utility model, by the following technical solutions:
This distribution transformer, including low pressure winding and high pressure winding, by drawing high pressure transition winding and low pressure transition winding in high pressure winding and low pressure winding respectively, the combination no-load voltage ratio of high pressure transition winding and low pressure transition winding is 9.5:0.4～10.5:0.4kV；Low pressure winding is divided into I section, II section and III section, I section, II section and III section to carry out serial or parallel connection combination extraction as low pressure transition winding；Every one transition tapping of extraction mutually in high pressure winding, high voltage winding component is high pressure transition winding and pressure regulation section winding by this tap, and two sections of windings are connected by vacuum switch.
In described low pressure winding the 27% of I section the line is busy circle sum, II section and III section in parallel time the line is busy circle total 73%, and II section identical with the number of wire turns of III section, the half that conductor cross-section is I section lead cross section of II section and III section.
Described low pressure winding is provided with three permutatoies, I section, III section and the first permutator are sequentially connected in series, I section, the 3rd permutator and II section are sequentially connected in series, connecting between first permutator and the second permutator and have the 3rd permutator, II section and the first permutator are connected to the first head of low pressure winding.
Described high pressure transition winding and low pressure transition winding be combined as one of following three kinds of combinations:
The first combination: access circuit of connecting with I section again after II and III section of parallel connection of low pressure winding, in high pressure winding, the tap of a phase is sequentially connected with composition " D " type connection with another mutually first head；
The second combines: the I section of low pressure winding and III section of series connection access circuit, and in high pressure winding, the tap of a phase is sequentially connected with composition " D " type connection with another mutually first head；
The third combination: the I section of low pressure winding, II section and III section of series connection access circuit, in high pressure winding, the tap of three-phase connects together composition Y-shaped connection.
In high pressure winding in the first combination and the second combination, every phase winding make winding be divided into high pressure transition winding and pressure regulation section winding by a transition tapping (X ', Y ', Z '), two sections of windings are connected by a vacuum switch Kg3, pressure regulation section winding is provided with tap changer, each tap changer is connected with driving switch Kg5, driving switch Kg5 is connected with capacitance switch Kg4, and capacitance switch Kg4 is provided with star contact and angle contact；First head in every phase winding connects two permutator Kg1 and Kg2, and transition tapping in a phase winding (X ', Y ', Z ') is connected with the permutator Kg2 in next phase winding；In one phase winding, the angle contact on capacitance switch Kg4 is connected with the permutator Kg1 in next phase winding；In three-phase windings, the star contact on capacitance switch Kg4 links together.
In high pressure winding in the third combination, in every phase winding by a transition tapping (X ', Y ', Z ') make winding be divided into high pressure transition winding and pressure regulation section winding, two sections of windings are connected by a vacuum switch Kg3, pressure regulation section winding is provided with tap changer, each tap changer is connected with driving switch Kg5, driving switch Kg5 is connected with capacitance switch Kg4, star contact and angle contact it is provided with on capacitance switch Kg4, first head in every phase winding connects permutator Kg1, transition tapping (X ', Y ', Z ') connect have permutator Kg2, and the other end of Kg2 links together in three-phase windings；In one phase winding, the angle contact on capacitance switch Kg4 is connected with the permutator Kg1 in next phase winding；Permutator Kg2 in three-phase windings links together；Star contact in three-phase windings links together.
High pressure transition winding and low pressure transition winding are accessed in the handoff procedure of capacity and pressure regulating transformator, when carrying out capacity or voltage gear switch, transition winding is accessed circuit, it is achieved capacitance switch and driving switch excise from circuit, no current when making capacitance switch and driving switch action.
It should be noted that, when the second combination and the third combination carry out capacity and pressure regulating switching, low pressure transition winding accesses circuit, transition windings section line segment cross section (such as III section) is a half section of Large Copacity low-voltage coil, when being in Large Copacity shelves and carrying out pressure regulation switching, this part line segment bears the overload of 2 times, but due to switching time the shortest (about 20-40ms), can meet requirement completely.
This utility model is changed by transformer high-voltage winding " Y-Δ " conversion and low pressure winding " connection in series-parallel ", thus realize capacity transfer purpose, by high-low pressure winding is drawn the no-load voltage ratio combination that one group of no-load voltage ratio is 9.5:0.4～10.5:0.4kV, by switch on and off order, the combination of this no-load voltage ratio is accessed in the handoff procedure of capacity and pressure regulating transformator, the transition resistance of switch is replaced, to reduce the requirement to capacity and pressure regulating switch with this.
Accompanying drawing explanation
Fig. 1 is this utility model embodiment 1 and embodiment 3 mesolow winding leads and switches schematic diagram.
Fig. 2 is this utility model embodiment 1 and embodiment 2 mesohigh winding leads structure and position of the switch schematic diagram.
Fig. 3 is this utility model embodiment 2 mesolow winding leads and switching schematic diagram
Fig. 4 is this utility model embodiment 3 mesohigh winding leads structure and position of the switch schematic diagram.
Detailed description of the invention
Loaded capacity regulating voltage regulating distribution transformer of the present utility model includes low pressure winding and high pressure winding, is changed by " the Y-Δ " of high pressure winding and " connection in series-parallel " of low pressure winding is changed, it is achieved capacity transfer purpose.On this basis by special outlet structure, by transformer high-voltage winding and low pressure winding are drawn the no-load voltage ratio combination that one group of no-load voltage ratio is 9.5:0.4～10.5:0.4kV, by special construction of switch and break-make order, the combination of this no-load voltage ratio is accessed in the handoff procedure of capacity and pressure regulating transformator, replace the transition resistance of switch, reduce the requirement to capacity and pressure regulating switch with this.
Embodiment 1
The present embodiment 1 mesolow winding is as shown in Figure 1, be made up of I section, II section and III section, wherein the 27% of I section the line is busy circle sum, II section and III section in parallel time the line is busy circle total 73%, and II section identical with the number of wire turns of III section, II section and III section of single hop conductor cross-section are about the half in I section lead cross section.Connect with I section again after II and III section of parallel connection and access circuit as the low pressure transition winding under Large Copacity.One end points of I section is neutral point x, and another end points and an end points connection of III section, junction point is x2, and another end points of III section is a2, and two end points of II section are x1 and a1.I section, III section, the first permutator Kd1 and power supply contact are sequentially connected with.I section and the junction point x2 of III section, the 3rd permutator Kd3, II section and power supply contact are sequentially connected with.The junction point x2 of I section, I section and III section, the 3rd permutator Kd3, the second permutator Kd2, the first permutator Kd3 and power supply contact are sequentially connected with.Control three sections of wire turns are carried out serial or parallel connection by the folding of three permutatoies, to realize the capacity transfer switching of low pressure winding.Three switching switches use vacuum bubbles, it is to avoid charged switching arcing.
When the second permutator Kd2 closes, and the first permutator Kd1 and the 3rd permutator Kd3 disconnects, see (1) in Fig. 1, form I section, the combination of II section and III section series connection.Now power supply is received on a1, is connected on a2 by II section and Kd2, then is received in neutral point x by III section and I section.Under this three sections of series connection, transformator is low capacity state, and high pressure winding is in " Y " connection, the on off state as at Fig. 2 simultaneously.
When the first permutator Kd1 and the 3rd permutator Kd3 close, and the second permutator Kd2 disconnects, see (2) in Fig. 1, the combination connected again after forming II section and III section of parallel connection with I section.Now power supply is received on a1, receives on a2 joint by Kd1 simultaneously, is received on x2 by III section and II section, then is received in neutral point x by I section.Under this connection in series-parallel state, transformator is Large Copacity state, and high pressure winding is in " D " connection simultaneously.
High pressure winding uses multi-layer cylindrical structure, as shown in Figure 2, it is divided into A, B, C three-phase, being divided into high pressure transition winding A-X ' (B-Y ', C-Z ') coil and pressure regulation section winding coil X-X ' (Y-Y ', Z-Z ') by a tap X ' (Y ', Z ') in every phase winding, two sections of windings are connected by a vacuum switch Kg3.Being provided with tap changer in pressure regulation section winding, each tap changer is connected with driving switch Kg5.Driving switch Kg5 is connected with capacitance switch Kg4, and capacitance switch Kg4 is provided with star contact (star 2) and angle contact (angle 1), and capacitance switch Kg4 can change between angle 1 and 2 two contacts of star, it is achieved " Y-Δ " is changed.First head in each phase winding connects two permutator Kg1 and Kg2, and the first head in each phase winding connects Kg2 and forms " D " connection.Other end in one phase winding is connected with the permutator Kg2 in next phase winding, the X in specifically A phase winding,Section is connected with the Kg2 of B phase winding, the Y in B phase winding,Section is connected with the Kg2 of C phase winding, the Z in C phase winding,Section is connected with the Kg2 of A phase winding.In one phase winding, the angle contact of capacitance switch Kg4 is connected with the permutator Kg1 in next phase winding, in specifically A phase winding, angle 1 is connected with the Kg1 of B phase winding, in B phase winding, angle 1 is connected with the Kg1 of C phase winding, and the angle 1 in C phase winding is connected with the Kg1 of A phase winding.In three-phase windings, the star contact of capacitance switch Kg4 links together, i.e. the star 2 of A phase winding, the star 2 of star 2 and C phase winding of B phase winding link together.In handoff procedure, Kg1 and Kg3 simultaneously switches off, without loop current during to realize capacitance switch Kg4 or driving switch Kg5 action.
Owing to Kd1, Kd2, Kd3, Kg1, Kg2 and Kg3 are vacuum switch, it is ensured that all charged switchings all complete in vacuum bubbles, decrease switching arcing and contact burns.Reduce driving switch Kg5 and the performance requirement of capacitance switch Kg4 simultaneously.
When the present embodiment realizes switching (the switching between (1) and (2) in Fig. 1) between transformator low capacity state and Large Copacity state, low pressure winding needs to become (2) (1) in Fig. 1, and high pressure winding needs to form " D " type connection；Details are provided below:
When transformator is switched to Large Copacity by low capacity, before switching, low pressure winding is in Fig. 1 (1) state, and wherein Kd1 and Kd3 is off, and Kd2 is in closure state.First Kd1, Kd2 and Kd3 switch of low pressure winding and Kg1, Kg2 and Kg3 of high pressure winding switchs action simultaneously, it is specially low pressure winding Kd1, Kd3 Guan Bi, Kd2 disconnects, and connects ((1) in Fig. 1 becomes (2)) by being formed with I section after II and III section of parallel connection of low pressure winding again.High pressure winding Kg1 and Kg3 disconnects simultaneously, and Kg2 closes, and high pressure windings section A-X ', B-Y ', C-Z ' are accessed circuit, and composition " D " type connection.Now disconnecting due to Kg3, Kg4 and Kg5 is substantially without loop current.Then high pressure winding Kg4 switch contact is switched on the contact of angle 1 by star 2, it is achieved " Y-Δ " is changed.Kg1 and the Kg3 Guan Bi of last high pressure winding, Kg2 disconnects, and excises high pressure transition windings section.So transformator just completes low capacity and is switched to jumbo switching.
When transformator is switched to low capacity by Large Copacity: before switching, low pressure winding is in Fig. 1 (2) state, and wherein Kd1 and Kd2 is in closure state, and Kd2 is off.During switching, high pressure winding Kg1, Kg2 and Kg3 switch action simultaneously.Being specially high pressure winding Kg1 and Kg3 to disconnect, Kg2 closes, and high pressure winding A-X ', B-Y ', C-Z ' are accessed circuit, and composition " D " type connection.Then high pressure winding Kg4 switch contact is switched on star 2 contact by angle 1, it is achieved " Δ-Y " changes.Last low pressure winding Kd1 and Kd3 disconnects, and Kd2 closes ((1) in Fig. 1), simultaneously high pressure winding Kg1 and Kg3 Guan Bi, and Kg2 disconnects, and excises transition winding.So transformator just completes Large Copacity and is switched to the switching of low capacity.
When transformator carries out gear switch regulation voltage, no matter in low capacity state or Large Copacity state, first transition winding is accessed circuit, composition " Dy " type connection, Kg3 disconnects simultaneously, now Kg5 driving switch switches in the case of no current, cuts out and return to original capacity by transition winding after completing.
Such as switch gear during low capacity state: low pressure winding Kd1, Kd2 and Kd3 switch switchs action simultaneously with high pressure winding Kg1, Kg2 and Kg3；Being specially low pressure winding Kd1, Kd3 Guan Bi, Kd2 disconnects, is switched under Large Copacity by low pressure winding, and high pressure winding Kg1 and Kg3 disconnects simultaneously, and high pressure winding A-X ', B-Y ' and C-Z ' are accessed circuit, and composition " D " type connection by Kg2 Guan Bi.Now Kg3 disconnects, and Kg5 gear can be according to instruction regulation voltage.After driving switch Kg5 has switched, low pressure winding Kd1, Kd3 disconnect, and Kd2 closes, simultaneously high pressure winding Kg1 and Kg3 Guan Bi, and Kg2 disconnects, and excises high pressure winding, completes gear switch.
When Large Copacity incision gear shift position, now low pressure winding state meets low pressure transition winding requirement, and low tension switch is failure to actuate, and high pressure winding Kg1 and Kg3 disconnects, and high pressure winding A-X ', B-Y ' and C-Z ' are accessed circuit, and composition " D " type connection by Kg2 Guan Bi.Then Kg5 gear can be according to instruction regulation voltage, and after Kg5 has switched, high pressure winding Kg1 and Kg3 closes, and Kg2 disconnects simultaneously, excises high pressure winding, completes gear switch.
Embodiment 2
Low pressure winding construction in the present embodiment is as the low pressure winding construction in embodiment 1, and simply switching mode is different, is I section and III section of series connection of transformer low voltage winding to be drawn as low pressure transition winding, as shown in Figure 3.
First permutator Kd1 Guan Bi in the present embodiment 1 low pressure winding, when the second permutator Kd2 and the 3rd permutator Kd3 disconnects, sees (2) in Fig. 3, forms only I section and the combination of III section of series connection, i.e. the low pressure transition winding of the present embodiment.Now power supply is received on a2 joint by Kd1, is received in neutral point x by III section and I section.
Total number of turns due to the present embodiment low pressure transition winding is equal to the total number of turns of embodiment 1 low pressure transition winding, and high-voltage winding structure is identical with the high voltage structures of embodiment 1, and simply in handoff procedure, the sequence of movement of each switch is different.
When the present embodiment realizes switching (the switching between (1) and (3) in Fig. 3) between transformator low capacity state and Large Copacity state, low pressure winding needs (1) in Fig. 3 is first become (2), become (3) from (2) again, and high pressure winding needs to form " D " type connection；Details are provided below:
When transformator is switched to Large Copacity by low capacity, before switching, low pressure winding is in Fig. 3 (1) state, and wherein Kd1 and Kd3 is off, and Kd2 is in closure state.First Kd1 and the Kd2 switch of low pressure winding and Kg1, Kg2 and Kg3 of high pressure winding switchs action simultaneously, it is specially low pressure winding Kd1 Guan Bi, Kd2 disconnects, and the a2-x of low pressure winding is connected ((1) in Fig. 3 becomes (2)).High pressure winding Kg1 and Kg3 disconnects simultaneously, and Kg2 closes, and high pressure windings section A-X ', B-Y ', C-Z ' are accessed circuit, and composition " D " type connection.Now disconnect due to Kg3, Kg4 and Kg5 no current.Then high pressure winding Kg4 switch contact is switched on the contact of angle 1 by star 2, it is achieved " Y-Δ " is changed.Kd3 Guan Bi ((2) in Fig. 3 become (3)) of last low pressure winding, simultaneously Kg1 and the Kg3 Guan Bi of high pressure winding, Kg2 disconnects, and excises high pressure transition windings section.So transformator just completes low capacity and is switched to jumbo switching.
When transformator is switched to low capacity by Large Copacity.Before switching, low pressure winding is in Fig. 3 (3) state, and wherein Kd1 and Kd3 is in closure state, and Kd2 is off.During switching, low pressure winding Kd3 switch and high pressure winding Kg1, Kg2 and Kg3 switch action simultaneously, specially low pressure winding Kd3 disconnects, and a2-x is connected ((3) in Fig. 3 become (2)).High pressure winding Kg1 and Kg3 disconnects simultaneously, and Kg2 closes, and high pressure winding A-X ', B-Y ', C-Z ' are accessed circuit, and composition " D " type connection.Then high pressure winding Kg4 switch contact is switched on star 2 contact by angle 1, it is achieved " Δ-Y " changes.Last low pressure winding Kd1 disconnects, and Kd2 closes ((2) in Fig. 3 become (1)), simultaneously high pressure winding Kg1 and Kg3 Guan Bi, and Kg2 disconnects, and excises high pressure transition windings section.So transformator just completes Large Copacity and is switched to the switching of low capacity.
When transformator carries out gear switch regulation voltage, no matter in low capacity state or Large Copacity state, first transition winding is accessed circuit, composition " Dy " type connection, Kg3 disconnects simultaneously, now Kg5 driving switch switches in the case of no current, cuts out and return to original capacity by transition winding after completing.
Embodiment 3
Low pressure winding construction in the present embodiment is as the low pressure winding construction in embodiment 1, and simply switching mode is different, is as low pressure transition winding using the low capacity state of transformer low voltage winding, as shown in Figure 1.
High pressure winding can be obtained according to low pressure transition umber of turn and be in " Y " connection, on off state as shown in Figure 4.
High pressure winding in the present embodiment, as shown in Figure 4, it is divided into A, B, C three-phase, being divided into high pressure transition winding A-X ' (B-Y ', C-Z ') coil and pressure regulation section winding coil X-X ' (Y-Y ', Z-Z ') by a tap X ' (Y ', Z ') in every phase winding, two sections of windings are connected by a vacuum switch Kg3.Being provided with tap changer in pressure regulation section winding, each tap changer is connected with driving switch Kg5.Driving switch Kg5 is connected with capacitance switch Kg4, and capacitance switch Kg4 is provided with star contact (star 2) and angle contact (angle 1), and capacitance switch Kg4 can change between angle 1 and 2 two contacts of star, it is achieved " Y-Δ " is changed.The two ends of each phase winding respectively connect permutator Kg1 and Kg2.Angle contact in one phase winding is connected with the permutator Kg1 in next phase winding, and in specifically A phase winding, angle 1 is connected with the Kg1 of B phase winding, and in B phase winding, angle 1 is connected with the Kg1 of C phase winding, and the angle 1 in C phase winding is connected with the Kg1 of A phase winding.Kg2 in three-phase windings links together, i.e. the Kg2 of Kg2 and the C phase winding of Kg2, B phase winding of A phase winding links together, and forms " Y " connection.Star contact in three-phase windings links together, i.e. the star 2 of A phase winding, the star 2 of star 2 and C phase winding of B phase winding link together.Being connected by pressure regulation section coil and high pressure winding vacuum switch Kg3, in handoff procedure, Kg1 and Kg3 simultaneously switches off, to realize capacitance switch Kg4 or time capacity transfer selects switch Kg5 action without loop current.
When the present embodiment realizes the switching of transformer capacity and gear, it is as low pressure transition winding using the low pressure winding of transformator low capacity state, as shown in Figure 1；And high pressure winding needs to be formed " Y " connection, as shown in Figure 4；Details are provided below:
When transformator is switched to Large Copacity by low capacity, owing to before switching, low pressure winding has turned on, low-side switch is temporarily failure to actuate.High pressure winding Kg1, Kg2 and Kg3 switch action simultaneously, specially high pressure winding Kg1 and Kg3 disconnects, and Kg2 closes, and high pressure transition windings section A-X ', B-Y ' and C-Z ' access circuit, and composition Y-shaped connection.Now disconnect due to Kg3, Kg4 and Kg5 no current.Then high pressure winding Kg4 switch contact is switched on the contact of angle 1 by star 2, it is achieved " Y-Δ " is changed.Last low pressure winding Kd1, Kd2 and Kd3 and high pressure winding Kg1, Kg2 and Kg3 action simultaneously, being specially Kd1 and Kd3 Guan Bi, Kd2 disconnects ((2) in Fig. 1), simultaneously high pressure winding Kg1 and Kg3 Guan Bi, Kg2 disconnects, and excises transition winding.So transformator just completes low capacity to jumbo switching.
When transformator is switched to low capacity by Large Copacity.Before switching, low pressure winding is in Fig. 1 (2) state, and wherein Kd1 and Kd2 is in closure state, and Kd2 is off.During switching, low pressure winding Kd1, Kd2 and Kd3 switch and high pressure winding Kg1, Kg2 and Kg3 switch action simultaneously.Being specially low pressure winding Kd1 and Kd3 to disconnect, Kd2 closes ((1) in Fig. 1), is connected by low pressure transition winding；High pressure winding Kg1 and Kg3 disconnects simultaneously, and Kg2 closes, and high pressure winding A-X ', B-Y ' and C-Z ' access circuit, and composition Y-shaped connection.Then high pressure winding Kg4 switch contact is switched on star 2 contact by angle 1, it is achieved " Δ-Y " changes.Last high pressure winding Kg1 and Kg3 Guan Bi, Kg2 disconnects, and excises high pressure windings section.So transformator just completes the Large Copacity switching to low capacity.
When transformator carries out gear switch regulation voltage, with the similar process of capacity transfer, it is all that transition winding combination is accessed circuit, driving switch Kg5 is disconnected from the circuit, it is achieved no current action simultaneously.
Claims (6)
1. a loaded capacity regulating voltage regulating distribution transformer, including low pressure winding and high pressure winding, is characterized in that, by high pressure winding and
Drawing high pressure transition winding and low pressure transition winding in low pressure winding respectively, the combination of high pressure transition winding and low pressure transition winding becomes
Ratio is 9.5:0.4～10.5:0.4kV；Low pressure winding is divided into I section, II section and III section, I section, II section and III section to carry out going here and there also
Joint group closes draws as low pressure transition winding；Every one transition tapping of extraction mutually in high pressure winding, this tap is by high pressure winding
Being divided into high pressure transition winding and pressure regulation section winding, two sections of windings are connected by vacuum switch.
Loaded capacity regulating voltage regulating distribution transformer the most according to claim 1, is characterized in that, in described low pressure winding, I section accounts for
The 27% of wire turn sum, II section and III section in parallel time the line is busy circle sum 73%, and II section identical with the number of wire turns of III section, II section with
The conductor cross-section of III section is the half in I section lead cross section.
Loaded capacity regulating voltage regulating distribution transformer the most according to claim 1, is characterized in that, is provided with in described low pressure winding
Three permutatoies, I section, III section and the first permutator be sequentially connected in series, and I section, the 3rd permutator and II section are gone here and there successively
Connection connects, and connecting between the first permutator and the second permutator has the 3rd permutator, and II section and the first permutator all connect
It is connected to the first head of low pressure winding.
Loaded capacity regulating voltage regulating distribution transformer the most according to claim 1, is characterized in that, described high pressure transition winding and low
Press through cross winding be combined as one of following three kinds of combinations:
The first combination: access circuit of connecting with I section again after II and III section of parallel connection of low pressure winding, in high pressure winding, a phase takes out
Head is sequentially connected with composition " D " type connection with another mutually first head；
The second combines: the I section of low pressure winding and III section of series connection access circuit, and in high pressure winding, the tap of a phase is first with another phase
Head is sequentially connected with composition " D " type connection；
The third combination: the I section of low pressure winding, II section and III section of series connection access circuit, and in high pressure winding, the tap of three-phase connects
To composition Y-shaped connection together.
Loaded capacity regulating voltage regulating distribution transformer the most according to claim 4, is characterized in that, the first combination and second described
Plant in the high pressure winding in combination, every phase winding makes winding be divided into high pressure transition winding and pressure regulation by a transition tapping
Section winding, two sections of windings are connected by a vacuum switch Kg3, are provided with tap changer in pressure regulation section winding, and each pressure regulation is taken out
Head is connected with driving switch Kg5, and driving switch Kg5 is connected with capacitance switch Kg4, and capacitance switch Kg4 is provided with star contact
With angle contact；First head in every phase winding connects two permutator Kg1 and Kg2, the transition tapping in a phase winding
It is connected with the permutator Kg2 in next phase winding；In one phase winding in the angle contact on capacitance switch Kg4 and next phase winding
Permutator Kg1 connect；In three-phase windings, the star contact on capacitance switch Kg4 links together.
Loaded capacity regulating voltage regulating distribution transformer the most according to claim 4, is characterized in that, the height in the third combination described
In pressure winding, every phase winding make winding be divided into high pressure transition winding and pressure regulation section winding by a transition tapping, two sections
Winding is connected by a vacuum switch Kg3, is provided with tap changer, each tap changer and driving switch in pressure regulation section winding
Kg5 connects, and driving switch Kg5 is connected with capacitance switch Kg4, capacitance switch Kg4 is provided with star contact and angle contact, often
First head in phase winding connects permutator Kg1, and transition tapping connects permutator Kg2, and Kg2 in three-phase windings
The other end link together；Angle contact on capacitance switch Kg4 and the permutator Kg1 in next phase winding in one phase winding
Connect；Permutator Kg2 in three-phase windings links together；Star contact in three-phase windings links together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620095499.3U CN205508602U (en) | 2016-01-29 | 2016-01-29 | It holds pressure regulating distribution transformer to have to carry to transfer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620095499.3U CN205508602U (en) | 2016-01-29 | 2016-01-29 | It holds pressure regulating distribution transformer to have to carry to transfer |
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| Publication Number | Publication Date |
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| CN205508602U true CN205508602U (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620095499.3U Withdrawn - After Issue CN205508602U (en) | 2016-01-29 | 2016-01-29 | It holds pressure regulating distribution transformer to have to carry to transfer |
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| CN (1) | CN205508602U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513772A (en) * | 2016-01-29 | 2016-04-20 | 山东电工电气集团智能电气有限公司 | On-load capacity-regulating voltage-regulating power distribution transformer |
| CN106252115A (en) * | 2016-09-28 | 2016-12-21 | 浙江法拉迪电气有限公司 | A kind of novel reactance type vacuum line pressure regulator |
| CN108565146A (en) * | 2018-06-21 | 2018-09-21 | 句容华源电器设备有限公司 | Transformer capacity and pressure regulating switching mechanism |
-
2016
- 2016-01-29 CN CN201620095499.3U patent/CN205508602U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513772A (en) * | 2016-01-29 | 2016-04-20 | 山东电工电气集团智能电气有限公司 | On-load capacity-regulating voltage-regulating power distribution transformer |
| CN106252115A (en) * | 2016-09-28 | 2016-12-21 | 浙江法拉迪电气有限公司 | A kind of novel reactance type vacuum line pressure regulator |
| CN108565146A (en) * | 2018-06-21 | 2018-09-21 | 句容华源电器设备有限公司 | Transformer capacity and pressure regulating switching mechanism |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160824 Effective date of abandoning: 20180320 |