CN201804691U - Single-phase super-capacity transformer for nuclear power station - Google Patents
Single-phase super-capacity transformer for nuclear power station Download PDFInfo
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- CN201804691U CN201804691U CN2010202424867U CN201020242486U CN201804691U CN 201804691 U CN201804691 U CN 201804691U CN 2010202424867 U CN2010202424867 U CN 2010202424867U CN 201020242486 U CN201020242486 U CN 201020242486U CN 201804691 U CN201804691 U CN 201804691U
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Abstract
The utility model relates to a single-phase super-capacity transformer for a nuclear power station, which comprises a high voltage bushing, a low voltage bushing, a high-voltage neutral bushing, an oil conservator, an upper oil tank, a lower oil tank, cooling devices and a no-load switch; single-phase four-column iron cores are arranged in the upper oil tank and the lower oil tank respectively; a high voltage winding and a low voltage winding are sleeved on two main column iron cores of the single-phase four-column iron cores respectively and are connected in parallel; lead terminals of the low voltage windings for the two main columns are positioned at the upper end respectively and connected through a copper bar to form a low-voltage double-column parallel structure; the oil conservator is positioned above the upper oil tank and on the other side opposite to the high voltage bushing; the cooling devices are arranged on the outer sides of one sides of the upper oil tank and the lower oil tank where the high voltage bushing and the high-voltage neutral bushing are arranged, and parallel to the direction of a long shaft of a transformer; and the no-load switch is positioned on the low-voltage side of the transformer. The single-phase super-capacity transformer has the advantages of compact integral structural layout, reduced size of outer limit, low loss, low noise, good shielding effect and more reasonable supporting structure of the oil conservator and effectively avoids local overheating.
Description
Technical field
The utility model relates to technical field of transformer manufacturing, specifically a kind of single-phase vast capacity generator transformer that is used for large nuclear power station.
Background technology
State-of-the-art in the world third generation nuclear power technology France EPR1000 technology increasingly mature is applied on the grassroot project of nuclear power station gradually.Also do not adopt at present the nuclear power station operational performance of this kind technology in the world, that has only this kind of employing technology is building nuclear power station.The whole world has only China, France, Finland to adopt French EPR1000 technology at three nuclear power stations building.Because the EPR1000 nuclear power technology of France reaches 1,750,000 kW at the unit energy output, than two generation nuclear power technology unit energy output 1,000,000 kW tangible increase is arranged, therefore supporting with it single-phase generator transformer capacity also rises to 700MVA by original 420MVA.Therefore single-phase vast capacity (700MVA/500kV and more than) transformer exploitation, to be applied in also be first in the world.
China has welcome the new period of greatly developing the nuclear power cause at present, the whole electric power installed capacitys of Chinese nuclear power generation in 20 years of future, and its proportion will account for less than 2% from present national generator capacity and bring up to 5%.Build the cumulative year after year of quantity along with Chinese civilian nuclear power plant, safely, reliably, the demand of the single-phase used in nuclear power station generator transformer of vast capacity is also increasing, therefore the exploitation of single-phase ultra-large capacity transformer, succeed in developing, will promote the development of Chinese nuclear power cause production domesticization greatly.And maturation manufacturing, the running technology of domestic and international single-phase 700MVA/500kV transformer do not appear in the newspapers as yet.
The utility model content
At above shortcomings part in the prior art, the technical problems to be solved in the utility model provides a kind of safe and reliable single-phase vast capacity used in nuclear power station transformer.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of single-phase vast capacity generator transformer of the utility model, have bushing, low-tension bushing, high pressure neutral bushing, oil conservator, go up fuel-economizing case, lower oil tank, cooling device and no load switch, single-phase four post core constructions are set in last fuel-economizing case and the lower oil tank, be with the high and low pressure winding respectively on the two principal post iron cores of single-phase four post iron cores, two principal post high and low pressure windings unshakable in one's determination are connected in parallel; Two principal post low pressure windings are lifted one's head all in the upper end, are connected to form low pressure twin columns parallel-connection structure by copper bar;
Bushing is directly vertically drawn from high pressure winding middle part; The high pressure neutral bushing is positioned at the high-pressure side near oil conservator, and the high pressure neutral bushing is vertically drawn directly and is connected with the neutral point lead-in wire; Low-tension bushing is positioned at the low-pressure side of fuel-economizing case, and low-tension bushing is directly lifted one's head the low-voltage lead of drawing with the low pressure winding and is connected;
Oil conservator is positioned at the fuel-economizing case top opposite side relative with bushing, extends perpendicular to the transformer long axis direction and outside prolonging axially;
The cooling device centralized arrangement is in the outside that last fuel-economizing case and lower oil tank have bushing and high pressure neutral bushing one side, and is parallel with the transformer long axis direction;
After low-tension bushing is drawn from low-voltage lead, link to each other with outer kernel plant generator unit;
No load switch is positioned at the low-pressure side of transformer, and its patchboard is connected to the tap pressure regulation lead-in wire that the pressure regulation section in the high pressure winding is drawn in low-pressure side.
Described single-phase four rod structures are by two principal posts unshakable in one's determination, two other posts, two last yokes and four single-phase transformer closed magnetic circuits that return yoke constitutes.
Described single-phase four post iron cores have upper and lower folder, upper and lower folder web, are connected with upper and lower folder magnetic screen by connector respectively on the upper and lower folder web, and the upper clamping piece outer surface is coated with copper shield, and the upper clamping piece magnetic screen is fixed on the copper shield.
Respectively draw upper and lower two-way pressure regulation lead-in wire in two principal post coils unshakable in one's determination, totally four pass lines are connected on four patchboards of no load switch.
It is parallel adjacent that two of low pressure winding lift one's head, and electric current equates that direction is opposite.
Described low-voltage lead adopts the single-phase electricity shielding construction, comprises the low pressure seat that raises, and low pressure raises and the electric screen net is installed in the seat, and two low-voltage terminals all insert two low pressure and raise in the seat, and is drawn by the low pressure seat top that raises.
Described low pressure rising seat is a cylinder mode, the upper end of its inwall and upper cover plate Joint, the lower end is connected with lower flange, on the inwall of low pressure rising seat and the bottom surface of upper cover plate is provided with gauze screen, low-voltage terminal passes upper cover plate, is fixed with low-tension bushing and enclosed busbar flange at the upper surface of upper cover plate; At a low pressure rising seat underrun flange lower cover is installed removably.
Establish reinforcement iron on the described lower oil tank, strengthen removably being equipped with on the iron transportation shoulder seat.
The utlity model has following beneficial effect and advantage:
1. the utility model is directly vertically drawn the 500kV high-voltage terminal sleeve pipe of transformer from the coil middle part, and it is relative with the 500kV sleeve pipe that oil conservator is positioned at the left side of transformer body fuel tank; Increased the bushing distance to the ground; Both can guarantee the external insulation distance, and make transformer integral arrangement compactness again, and dwindle transformer and limit size outward, loss is low, noise is low, shield effectiveness is good, prevented local overheating effectively, makes the supporting construction of oil conservator more reasonable simultaneously.
The utility model on the core clamping web by two-way bolt affixed magnetic screen, can make leakage field along silicon steel sheet rolling direction walking, and most of leakage field is introduced main flux, the loss that leakage field produces reduces significantly; Simultaneously be coated with copper shield, effectively in the leakage field reflected back fuel tank that low-voltage copper bar is caused, effectively prevented the local overheating of high and low side upper clamping piece at high and low side upper clamping piece web outer surface.Owing to increased the folder mode of top and the bottom, thereby core clamping magnetic screen noise reduced; In addition, also increased the lead-in wire arrangement space, have the same oil spacing from transformer, structural configuration is simple.
3. low pressure winding of the present utility model is lifted one's head all in the upper end, is connected low pressure top by copper bar and realizes the twin columns parallel connection.Lift one's head parallel adjacently for two, the electric current equal direction is opposite, thereby has reduced the leakage field of big electric current copper bar on iron core arm-tie web, reduces the generation of low pressure upper limbs plate superheating phenomenon; In addition, also solved big electric current copper bar to the not enough problem of low pressure upper clamping piece distance and the fuel tank distance is remained unchanged; Reduce supplementary load loss, thereby protected environment.
4. seat is takeed in the transportation of the utility model employing when the transformer body fuel tank is strengthened the transportation of employing D36 transport vehicle is installed on the iron.Transportation shoulder seat is directly to be connected oil tank of transformer by bolt to strengthen on the iron, and transformer detachably gets off after being transported to the erecting bed, and is reusable when other transformer transportation.
5. the utility model for China greatly develops the nuclear power cause, advances the nuclear power plant equipment production domesticization to provide strong technical support at field transformer first for the supporting transformer that provides of third generation nuclear power technology EPR1000 nuclear power station 1,750,000 kW generating sets.
6. of the present utility model the research and development successfully, the research at aspects such as the single-phase generator Transformer Winding Temperature Rise of vast capacity, leakage field controls has had bigger breakthrough, can promote the development of domestic transformer industry, has satisfied the demand of Chinese environmental protection power grid construction.
Description of drawings
Fig. 1 is the utility model transformer front view;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the schematic diagram of iron core and folder from top to bottom in the utility model;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is the partial enlarged drawing at I place among Fig. 5;
Fig. 7 is the partial enlarged drawing at II place among Fig. 5;
Fig. 8 is the partial enlarged drawing at III place among Fig. 5;
Fig. 9 A is the structural representation of upper clamping piece magnetic screen unshakable in one's determination in the utility model;
Fig. 9 B is a magnetic screen connection diagram among Fig. 9 A;
Figure 10 A is the structural representation of lower clamping piece magnetic screen unshakable in one's determination in the utility model;
Figure 10 B is a magnetic screen connection diagram among Figure 10 A;
Figure 11 A is the schematic diagram of the utility model mesolow outlet electric shielding structure;
Figure 11 B is the vertical view of Figure 11 A;
Figure 11 C is an electric screen web frame schematic diagram among Figure 11 A;
Figure 12 is the utility model mesolow outlet copper bar syndeton schematic diagram;
Figure 13 is the left view of Figure 12;
Transportation shoulder seat and fuel tank syndeton schematic diagram when Figure 14 transports for the utility model transformer body;
Figure 15 is the left view of Figure 14.
Wherein, 1 is transformer body; 2 is bushing; 3 is low-tension bushing; 4 is the high pressure neutral bushing; 5 is oil conservator; 6 is lower oil tank; 7 is last fuel-economizing case; 8 is cooling device; 9 is upper clamping piece; 10 for putting the beams in place; 11 is curb girder; 12 is lower clamping piece; 13 are the pad pin; 14 is unshakable in one's determination; 15 is insulating board; 16 is insulation board; 17 is insulation cushion; 18 is insulating case; 19 is drawstring; 20 is the upper clamping piece web; 21 is the upper clamping piece magnetic screen; 22 is the lower clamping piece web; 23 is the lower clamping piece magnetic screen; 24 is insulation board; 25 is copper shield; 26 is the electric screen net; 27 is lower flange; 28 mix for hanging; 29 is upper cover plate; 30 is the enclosed busbar flange; 31 is lower cover; 32 is copper coin; 33 are low pressure rising seat; 34 lift one's head for the low pressure winding; 35 is copper bar; 36 are the pressure regulation lead-in wire; 37 is no load switch; 38 are fuel tank reinforcement iron, and 39 are transportation shoulder seat, and 40 is the D36 transport vehicle.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
The utility model vast capacity generator transformer is an example with single-phase 700MVA/500kV generator transformer, have bushing, low-tension bushing, high pressure neutral bushing, oil conservator, go up fuel-economizing case, lower oil tank, cooling device and no load switch, wherein: go up in fuel-economizing case 7 and the lower oil tank 6 single-phase four post core constructions are set, be with the high and low pressure winding respectively on the two principal post iron cores of single-phase four post iron cores 14, two post high and low pressure windings are connected in parallel; Two post low pressure windings are lifted one's head all in the upper end, are connected to form low pressure twin columns parallel-connection structure by copper bar 35; Bushing 2 is directly vertically drawn from high pressure winding middle part; Oil conservator 5 is positioned at the fuel-economizing case 7 tops opposite side relative with bushing, extends perpendicular to the transformer long axis direction and outside prolonging axially; Cooling device 8 centralized arrangement have the outside of bushing 2 and high pressure neutral bushing 4 one sides at last fuel-economizing case 7 and lower oil tank 6, parallel with transformer 1 long axis direction, under the prerequisite that guarantees the external insulation distance, transformer 1 integral layout is reasonable, outer limit size reduces, and makes the supporting construction of oil conservator 5, cooling device 8 more reliable simultaneously.Low-voltage lead links to each other with outer kernel plant generator unit by low-tension bushing 3, the adjustment that the electric energy that the nuclear power station generating set sends passes through transformer by high-tension cable to 500kV electrical network conveying capacity.
Core construction adopts single-phase four rod structures, by the other posts of two principal posts unshakable in one's determination and two, goes up the closed magnetic circuit that yoke and four return yokes constitute this single-phase transformer for two.Adopt simultaneously iron core arm-tie, folder and pad pin guarantee lamination clamping, the lifting of device body, compress and short-circuit condition under mechanical strength.Be connected with upper and lower folder magnetic screen 21,23 by two-way bolt respectively on the folder from top to bottom web 20,21 unshakable in one's determination, upper clamping piece 9 outer surfaces are coated with copper shield 25 simultaneously, and upper clamping piece magnetic screen 21 is fixed on the copper shield 25 of upper clamping piece 9 outer surfaces covering by bolt.
Two of low pressure windings are lifted one's head parallel adjacent, and electric current equates that direction is opposite, thereby reduce the leakage field of great current lead wire on iron core arm-tie web, and it is overheated effectively to have controlled the transformer part.The pressure regulation lead-in wire adopts in two principal post coils unshakable in one's determination respectively draws upper and lower two-way, and totally four pass lines are received on four patchboards of no load switch.
Low-voltage lead is the single-phase electricity shielding construction, comprises low pressure rising seat 33,26, two low-voltage terminals of electric screen net is installed in it all inserts in two low pressure rising seats 33, and drawn by low pressure rising 33 top.
Described low pressure rising seat 33 is a cylinder mode, the upper end of its inwall and upper cover plate 29 Joints, the lower end is connected with lower flange 27, on the inwall of low pressure rising the seat 33 and bottom surface of upper cover plate 29 is provided with electric screen net 26, low-voltage terminal passes upper cover plate 29, is fixed with low-tension bushing 3 and enclosed busbar flange 30 at the upper surface of upper cover plate 29; At low pressure rising seat 33 underrun flanges lower cover 31 is installed removably.
Establish reinforcement iron on the described main body lower oil tank 6, strengthen removably being equipped with on the iron transportation shoulder seat, transformer detachably gets off after being transported to the erecting bed, and is reusable when other transformer transportation.
Shown in Fig. 1～3, in the utility model, bushing 2 is directly vertically drawn from last fuel-economizing case 7; High pressure neutral bushing 4 be arranged in the high-pressure side with away from bushing 2 directions; Oil conservator 5 is positioned at the left side of fuel-economizing case 7 near high pressure neutral bushing 4, perpendicular to transformer 1 long axis direction; Cooling device 8 centralized arrangement are in the high-pressure side of transformer 1, with parallel with transformer 1 long axis direction; Under the prerequisite that guarantees the external insulation distance, transformer 1 integral layout is reasonable, limits size to reduce outward, makes the supporting construction of oil conservator 5, cooling device 8 more reliable simultaneously.
Shown in Fig. 4～8, single-phase four post iron cores 14 are set in last fuel-economizing case 7, the lower oil tank 6, be provided with insulating board 15 between the upper and lower folder 9,12 of single-phase four post iron cores 14 and the contact-making surface of single-phase four post iron cores 14, make upper and lower folder 9,12 all insulations of single-phase four post iron cores 14, upper and lower folder 9,12 is connected with single-phase four post iron cores 14 by earth connection, makes upper and lower folder 9,12 independent groundings.Bolt insulating case 18, insulation cushion 17, insulation board 16 all insulations of the upper beam 10 of upper and lower folder 9,12, pad pin 13, curb girder 11 and upper and lower folder 9,12 connections, drawstring 19 two ends and upper and lower folder 9,12 all insulations, connect with earth connection then, make its upper and lower folder 9,12 independent groundings, if solved the problem that can not form the loop when vast capacity, high voltage transformer folder produce circulation owing to leakage field, when appearance multipoint earthing unshakable in one's determination is checked, found easily simultaneously.
Shown in Fig. 9 A, 9B, 10A, 10B, be connected with folder magnetic screen 21,23 by two-way bolt on the single-phase four posts 14 upper and lower folder webs 20,22 unshakable in one's determination, and clamp magnetic screens with insulation board 24, leakage field is walked along the silicon steel sheet rolling direction, and most of leakage field introduced the main flux of single-phase four post iron cores 14, the loss that leakage field produces reduces significantly; Simultaneously install copper coin 25 additional as copper shield, effectively in the leakage field reflected back lower oil tank 6 that low-voltage copper bar is caused, effectively prevented the local overheating of upper clamping piece web 20 at high and low side upper clamping piece web outer surface.Owing to increased the clamping mode of transformer top and the bottom, thereby folder magnetic screen 21,23 noises reduced; In addition,, therefore increased the arrangement space of low-voltage lead, made the low-voltage lead structural configuration simple because upper clamping piece 9 outer surfaces are coated with copper shield 25.
Shown in Figure 11 A, 11B, 11C, the transformer low voltage lead-in wire adopts two single-phase electricity shielding constructions to be positioned at the top of step down side, is connected with the last fuel-economizing case 7 of transformer, comprises two independently low pressure rising seats 33, and electric screen net 26 is installed in it.
Two low-voltage terminals of single-phase transformer insert respectively in two low pressure rising seats 33, and are drawn by low pressure rising seat 33 tops.Low pressure rising seat 33 is a cylinder mode, and the upper end of its inwall and upper cover plate 29 adopt welding affixed, and the lower end is connected with lower flange 27.For the seat that raises in carrying low pressure kept it to put steadily at 33 o'clock, on the lower flange 27 of low pressure rising seat 33 bottom surfaces, lower cover 31 is installed removably.On the inwall of low pressure rising the seat 33 and bottom surface of upper cover plate 29 is provided with electric screen net 26, all has the hole on 26 times square flanges 27 of the electric screen net on upper cover plate 29 and the inwall thereof, is used for the transformer low voltage terminal and passes.Electric screen net 26 is the high copper coin of conductance 32.Upper surface at upper cover plate 29 is fixed with boatswain chair 28 and enclosed busbar flange 30.
Shown in Figure 12～13, transformer body inside comprises: the low pressure winding lifts one's head 34 all in the upper end, connects by copper bar 35 and realizes the parallel connection of low pressure twin columns.It is 34 parallel adjacent that two of low pressure windings are lifted one's head, and the electric current equal direction is opposite, thereby reduce the leakage field of great current lead wire on iron core arm-tie web 20, and it is overheated effectively to have controlled the transformer part.The pressure regulation lead-in wire adopts in two principal post coils unshakable in one's determination respectively draws upper and lower two-way,, totally four pass lines are received on four patchboards of no load switch 37.
Shown in Figure 14～15, the transportation shoulder seat 39 that transformer 1 main body fuel tank adopts when strengthening the transformer transportation is installed on the iron 38.Transportation shoulder seat 39 is directly to be connected oil tank of transformer by bolt to strengthen on the iron 38, and transformer detachably gets off after being transported to the erecting bed by D36 transport vehicle 40, and is reusable when other transformer transportation.
Claims (8)
1. a single-phase vast capacity generator transformer has bushing, low-tension bushing, high pressure neutral bushing, oil conservator, goes up fuel-economizing case, lower oil tank, cooling device and no load switch, it is characterized in that:
Single-phase four post core constructions are set in last fuel-economizing case (7) and the lower oil tank (6), are with the high and low pressure winding respectively on the two principal post iron cores of single-phase four post iron cores, two principal post high and low pressure windings unshakable in one's determination are connected in parallel; Two principal post low pressure windings are lifted one's head all in the upper end, are connected to form low pressure twin columns parallel-connection structure by copper bar (35);
Bushing (2) is directly vertically drawn from high pressure winding middle part; High pressure neutral bushing (4) is positioned at the high-pressure side near oil conservator (5), and high pressure neutral bushing (4) is vertically drawn directly and is connected with the neutral point lead-in wire; Low-tension bushing (3) is positioned at the low-pressure side of fuel-economizing case (7), and low-tension bushing (3) is directly lifted one's head the low-voltage lead that (34) draw with the low pressure winding and is connected;
Oil conservator (5) is positioned at fuel-economizing case (7) the top opposite side relative with bushing, extends perpendicular to the transformer long axis direction and outside prolonging axially;
Cooling device (8) centralized arrangement is in the outside that last fuel-economizing case (7) and lower oil tank (6) have bushing (2) and high pressure neutral bushing (4) one sides, and is parallel with the transformer long axis direction;
After low-tension bushing (3) is drawn from low-voltage lead, link to each other with outer kernel plant generator unit;
No load switch (37) is positioned at the low-pressure side of transformer (1), and its patchboard is connected to the tap pressure regulation lead-in wire that the pressure regulation section in the high pressure winding is drawn in low-pressure side.
2. by the described single-phase vast capacity generator transformer of claim 1, it is characterized in that: described single-phase four rod structures are for going up yokes and four single-phase transformer closed magnetic circuits that return yoke constitutes by two principal posts unshakable in one's determination, two other posts, two.
3. by the described single-phase vast capacity generator transformer of claim 1, it is characterized in that: described single-phase four post iron cores have upper and lower folder (9,12), upper and lower folder web (20,22), be connected with upper and lower folder magnetic screen (21,23) by connector respectively on the upper and lower folder web (20,22), upper clamping piece (9) outer surface is coated with copper shield (25), and upper clamping piece magnetic screen (21) is fixed on the copper shield (25).
4. by the described single-phase vast capacity generator transformer of claim 1, it is characterized in that: respectively draw upper and lower two-way pressure regulation lead-in wire in two principal post coils unshakable in one's determination, totally four pass lines are connected on four patchboards of no load switch.
5. by the described single-phase vast capacity generator transformer of claim 1, it is characterized in that: two of low pressure winding lift one's head parallel adjacent, and electric current equates that direction is opposite.
6. by the described single-phase vast capacity generator transformer of claim 1, it is characterized in that: described low-voltage lead adopts the single-phase electricity shielding construction, comprise low pressure rising seat (33), in the low pressure rising seat (33) electric screen net (26) is installed, two low-voltage terminals all insert in two low pressure rising seats (33), and are drawn by low pressure rising seat (33) top.
7. by the described single-phase vast capacity generator transformer of claim 6, it is characterized in that: described low pressure rising seat (33) is cylinder mode, the upper end of its inwall and upper cover plate (29) Joint, the lower end is connected with lower flange (27), on the inwall of low pressure rising seat (33) and the bottom surface of upper cover plate (29) is provided with gauze screen (26), low-voltage terminal passes upper cover plate (29), is fixed with low-tension bushing (3) and enclosed busbar flange (30) at the upper surface of upper cover plate (29); At low pressure rising seat (a 33) underrun flange lower cover (31) is installed removably.
8. by the described vast capacity generator transformer of claim 1, it is characterized in that: described lower oil tank is established reinforcement iron on (6), strengthens removably being equipped with on the iron transportation shoulder seat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202424867U CN201804691U (en) | 2010-06-30 | 2010-06-30 | Single-phase super-capacity transformer for nuclear power station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202424867U CN201804691U (en) | 2010-06-30 | 2010-06-30 | Single-phase super-capacity transformer for nuclear power station |
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| CN201804691U true CN201804691U (en) | 2011-04-20 |
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| CN102315007A (en) * | 2010-06-30 | 2012-01-11 | 特变电工沈阳变压器集团有限公司 | Single-phase ultra-high-capacity nuclear power station transformer |
| CN102856065A (en) * | 2011-06-30 | 2013-01-02 | 特变电工沈阳变压器集团有限公司 | Single-phase super-capacity strong-current short-circuit testing transformer |
| CN102856056A (en) * | 2011-06-30 | 2013-01-02 | 特变电工沈阳变压器集团有限公司 | Overheating preventing structure for super-large current lead of transformer |
| CN103000357A (en) * | 2012-12-07 | 2013-03-27 | 中国西电电气股份有限公司 | Magnetic shielding structure with bend and processing method thereof |
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| CN102315007A (en) * | 2010-06-30 | 2012-01-11 | 特变电工沈阳变压器集团有限公司 | Single-phase ultra-high-capacity nuclear power station transformer |
| CN102315007B (en) * | 2010-06-30 | 2013-06-12 | 特变电工沈阳变压器集团有限公司 | Single-phase ultra-high-capacity nuclear power station transformer |
| CN102856065A (en) * | 2011-06-30 | 2013-01-02 | 特变电工沈阳变压器集团有限公司 | Single-phase super-capacity strong-current short-circuit testing transformer |
| CN102856056A (en) * | 2011-06-30 | 2013-01-02 | 特变电工沈阳变压器集团有限公司 | Overheating preventing structure for super-large current lead of transformer |
| WO2013000193A1 (en) * | 2011-06-30 | 2013-01-03 | 特变电工沈阳变压器集团有限公司 | Single-phase ultra-large capacity strong current short-circuit test transformer |
| CN102856065B (en) * | 2011-06-30 | 2015-11-18 | 特变电工沈阳变压器集团有限公司 | Single-phase super-capacity heavy current short circuit test transformer |
| CN103000357A (en) * | 2012-12-07 | 2013-03-27 | 中国西电电气股份有限公司 | Magnetic shielding structure with bend and processing method thereof |
| CN103000357B (en) * | 2012-12-07 | 2016-01-20 | 中国西电电气股份有限公司 | A kind of magnet shielding structure and processing method thereof with bending |
| CN103456488B (en) * | 2013-08-21 | 2016-01-20 | 宁波海融电器有限公司 | A kind of withstand large current mode water-cooling terminal |
| CN103680855A (en) * | 2013-12-20 | 2014-03-26 | 保定天威保变电气股份有限公司 | Built-in converter transformer core pulling plate column ring-current bypass structure |
| CN106571210A (en) * | 2015-10-09 | 2017-04-19 | 特变电工沈阳变压器集团有限公司 | 110kV transformer |
| CN106571210B (en) * | 2015-10-09 | 2018-10-12 | 特变电工沈阳变压器集团有限公司 | A kind of 110kV transformers |
| CN109830361A (en) * | 2017-11-23 | 2019-05-31 | 特变电工沈阳变压器集团有限公司 | A kind of single-phase three winding converter power transformer of large capacity |
| CN109524221A (en) * | 2018-12-21 | 2019-03-26 | 济南西门子变压器有限公司 | Transformer |
| CN110288883A (en) * | 2019-05-10 | 2019-09-27 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of converter power transformer fault simulation platform and method |
| CN110070977A (en) * | 2019-06-04 | 2019-07-30 | 保定天威保变电气股份有限公司 | Large capacity converter power transformer iron core high-temperature insulation structure and method |
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