CN203983006U - Capacity and pressure regulating three-phase transformer - Google Patents
Capacity and pressure regulating three-phase transformer Download PDFInfo
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- CN203983006U CN203983006U CN201420344682.3U CN201420344682U CN203983006U CN 203983006 U CN203983006 U CN 203983006U CN 201420344682 U CN201420344682 U CN 201420344682U CN 203983006 U CN203983006 U CN 203983006U
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 44
- 238000004804 winding Methods 0.000 claims abstract description 100
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 5
- 239000002828 fuel tank Substances 0.000 claims description 4
- 230000008901 benefit Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to capacity and pressure regulating three-phase transformer, by following the tracks of load variations and secondary voltage fluctuation adjusting transformer output capacity and output voltage.Three-phase transformer in the time of large capacity, high pressure winding is that triangle connects, each phase low pressure winding by the second winding and tertiary winding parallel connection after again with the first windings in series; Three-phase transformer is in the time of low capacity, and the high pressure winding of transformer changes Y-connection into, and each phase low pressure winding is formed by three sections of windings in series.The two end terminals of each winding of three-phase transformer high-pressure side and low-pressure side is connected with each corresponding terminal of capacity and pressure regulating switch respectively.Each phase high voltage winding component of transformer is two sections of windings, on these two sections of windings, has at least on a winding and has at least one tap, and each tap is connected respectively at the each corresponding terminal of pressure regulating and capacitance regulating switch.By the action of switch motor structure, can regulation output capacity and output voltage.
Description
Technical field
The utility model relates to capacity and pressure regulating three-phase transformer, belongs to field of power.
Background technology
The existing distribution transformer of China, comprises that the rated capacity of its transformer of box-type substation mostly immobilizes and prepares by user's peak load.But the rural power grids of China often present the features such as seasonal electricity consumption inequality (for example, occur fully loaded even overload when busy farming season and the Spring Festival, and other times load being less) and average load rate low (the regional transformer annual load factor having is even lower than 25%).This just causes electric network reactive-load component excessive, and the relative transmission line capability ratio of transformer noload losses is excessive, makes a large amount of waste of energy in reactive current loss and transformer noload losses.The a small amount of loaded capacity-regulated transformer occurring in the market, can partly address the above problem, but its function singleness, can only regulation output capacity, simultaneously regulation output capacity and output voltage.Be difficult to meet China and become the requirement of distribution field to the development of energy-conservation, intelligent, high efficiency, stable power-supplying quality.
Utility model content
The purpose of this utility model is to provide capacity and pressure regulating three-phase transformer, in order to solve according to the height of the variation of payload and line voltage, can not regulate output capacity and the output voltage of transformer, the no-load loss while reducing transformer operation and the problem of regulated output voltage simultaneously.
For achieving the above object, scheme of the present utility model is capacity and pressure regulating three-phase transformer, each phase low pressure winding of three-phase transformer comprises the first winding, the second winding and the tertiary winding, the sectional area of wire of the first winding is the twice of the second winding or the tertiary winding, and the number of turn of the second winding and the tertiary winding is identical.
When transformer load in set large capacity region in time, the high pressure winding of three-phase transformer be triangle connect, each phase low pressure winding be the second winding in parallel with the tertiary winding after with the first windings in series.
When in the low capacity interval of transformer load in setting, the high pressure winding of three-phase transformer is Y-connection, and each phase low pressure winding is that the first winding, the second winding, the tertiary winding are connected successively.
The two end terminals of the first winding of the two end terminals of each phase high pressure winding and each phase low pressure winding, the second winding, the tertiary winding is connected with each respective terminal of capacity and pressure regulating switch respectively.
Each phase high voltage winding component of three-phase transformer is the 4th winding and the 5th winding, in the 4th winding and the 5th winding, have at least a winding to have at least one tap at the middle part place of this phase high pressure winding, tap is connected in the respective terminal of capacity and pressure regulating switch.
Capacity and pressure regulating switch is loaded capacity regulating voltage regulating switch, and loaded capacity regulating voltage regulating switch is arranged in the fuel tank of three-phase transformer.
Three-phase transformer is equipped with control cubicle, and this control cubicle comprises: instrument transformer 11, control cubicle cabinet 12, three-phase and four-line multifunction electric meter 13, electricity management terminal 14, capacitor group control switch 15, controller 16, intelligent low-pressure on-load switch 17, mend capacitor group 18, point benefit capacitor group 19, lead-in circuit breaker 20, wire-outgoing breaker 21 altogether.
The utility model regulates terminal distribution transformer output capacity and output voltage automatically by following the tracks of the fluctuation of load variations and secondary voltage, has that intelligent degree is high, a compact conformation, the feature such as easy for installation.
Brief description of the drawings
Fig. 1 is three-phase transformer winding catenation principle figure while being large capacity;
Fig. 2 is three-phase transformer winding catenation principle figure while being low capacity;
Fig. 3 is control cubicle structural representation;
Fig. 4 is three-phase transformer and control cubicle overall schematic.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Fig. 1 and Fig. 2 are the general principle winding diagram of capacity and pressure regulating three-phase transformer.The winding diagram that Fig. 1 is three-phase transformer in the time of large capacity, three-phase transformer in the time of large capacity, high pressure winding is that triangle connects, each phase low pressure winding by 2 and 3 two sections of winding parallels after again with 1 series connection.Fig. 2 is the winding diagram that three-phase transformer is at low capacity, and three-phase transformer is in the time of low capacity, and the high pressure winding of transformer changes Y-connection into, and to ensure that in wire, current density remains unchanged substantially, low pressure winding is formed by 1,2,3 three section of windings in series.Due to now low pressure umber of turn increase, cause magnetic flux density in iron core greatly to reduce, thereby can significantly reduce no-load loss and the noise of transformer.The sectional area of wire of 1 winding is the twice of 2 windings or 3 windings, and winding 2 is identical with 3 the number of turn.The two end terminals of each winding of three-phase transformer high-pressure side and low-pressure side is connected with each corresponding terminal of loaded capacity regulating voltage regulating switch respectively, by the action of the switch motor structure in loaded capacity regulating voltage regulating switch, change three-phase transformer high pressure winding connection and the series-parallel variation of low pressure winding, realize the output capacity that regulates transformer.
Each phase high voltage winding component of three-phase transformer is two sections of windings, for winding 4 and 5, as shown in Fig. 1 or 2.On 4 or 5, there are several taps, each tap is connected with the each corresponding terminal of on-load voltage regulation capacitance switch respectively, by the action of the switch motor structure in on-load voltage regulation capacitance switch, changes the order of connection of each tap, i.e. adjustable output voltage.First a default desirable secondary output voltage and an extreme difference voltage when work.When fluctuation occurs line voltage, secondary voltage can change, in the time that variable quantity exceedes extreme difference voltage, and the motor drive mechanism action of switch, the tap joint position of change high voltage side of transformer, gets back within the scope of predeterminated voltage secondary voltage.
Capacity transfer and pressure regulation are integrated in a loaded capacity regulating voltage regulating switch, and a public motor-operating mechanism, have reduced the volume of switch and have reduced cost.Loaded capacity regulating voltage regulating switch is arranged in the fuel tank of three-phase transformer, is connected with each terminal of transformer by interconnector.
The each terminal of high-low pressure winding of transformer and each tap of high pressure winding connect with the corresponding static terminal of loaded capacity regulating voltage regulating switch respectively in the fuel tank of transformer.In the time of needs capacity transfer, drive the moved end son action to inductive switch by the motor drive mechanism of loaded capacity regulating voltage regulating switch, to change Transformer Winding connected mode and series-parallel variation, realize the output capacity that regulates transformer; In the time of needs regulation output voltage, the tap joint position that can change high pressure winding by motor drive mechanism equally realizes.
Fig. 3 is the control cubicle that three-phase transformer is equipped with.Control cubicle comprises instrument transformer 11, control cubicle cabinet 12, three-phase and four-line multifunction electric meter 13, electricity management terminal 14, capacitor group control switch 15, controller 16, intelligent low-pressure on-load switch 17, mends capacitor group 18, point benefit capacitor group 19, lead-in circuit breaker 20, wire-outgoing breaker 21 altogether.Control cubicle principle is whether the output current and the output voltage that detect three-phase transformer by instrument transformer decide capacity and pressure regulating switch to move as the control signal of controller, utilize controller to coordinate electricity management terminal, capacitor group, line circuit breaker and intelligent low-pressure on-load switch simultaneously, realize reactive power compensation, regulate the functions such as three-phase imbalance.
By public base, transformer is connected with Intelligent control cabinet, is illustrated in figure 4 overall schematic, comprising: public base 31, three-phase transformer 32, loaded capacity regulating voltage regulating switch 33, control cubicle 34, realize integrated design, facilitate on-the-spot installation.
More than provided concrete execution mode, but the utility model is not limited to described execution mode.Basic ideas of the present utility model are above-mentioned basic scheme, and for those of ordinary skill in the art, according to instruction of the present utility model, model, formula, the parameter of designing various distortion do not need to spend creative work.Variation, amendment, replacement and the modification of in the situation that not departing from principle of the present utility model and spirit, execution mode being carried out still fall in protection range of the present utility model.
Claims (3)
1. capacity and pressure regulating three-phase transformer, it is characterized in that, each phase low pressure winding of described three-phase transformer comprises the first winding, the second winding and the tertiary winding, and the sectional area of wire of the first winding is the twice of the second winding or the tertiary winding, and the number of turn of the second winding and the tertiary winding is identical;
When transformer load in set large capacity region in time, the high pressure winding of described three-phase transformer be triangle connect, each phase low pressure winding be the second winding in parallel with the tertiary winding after with the first windings in series;
When in the low capacity interval of transformer load in setting, the high pressure winding of described three-phase transformer is Y-connection, and each phase low pressure winding is that the first winding, the second winding, the tertiary winding are connected successively;
The two end terminals of the first winding of the two end terminals of each phase high pressure winding and each phase low pressure winding, the second winding, the tertiary winding is connected with each respective terminal of capacity and pressure regulating switch respectively;
Each phase high voltage winding component of described three-phase transformer is the 4th winding and the 5th winding, in described the 4th winding and the 5th winding, have at least a winding to have at least one tap at the middle part place of this phase high pressure winding, described tap is connected in the respective terminal of capacity and pressure regulating switch.
2. capacity and pressure regulating three-phase transformer according to claim 1, is characterized in that, described capacity and pressure regulating switch is loaded capacity regulating voltage regulating switch, and described loaded capacity regulating voltage regulating switch is arranged in the fuel tank of described three-phase transformer.
3. capacity and pressure regulating three-phase transformer according to claim 2, it is characterized in that, described three-phase transformer is equipped with control cubicle, and this control cubicle comprises: instrument transformer (11), control cubicle cabinet (12), three-phase and four-line multifunction electric meter (13), electricity management terminal (14), capacitor group control switch (15), controller (16), intelligent low-pressure on-load switch (17), mend capacitor group (18), point benefit capacitor group (19), lead-in circuit breaker (20), wire-outgoing breaker (21) altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344682.3U CN203983006U (en) | 2014-06-25 | 2014-06-25 | Capacity and pressure regulating three-phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344682.3U CN203983006U (en) | 2014-06-25 | 2014-06-25 | Capacity and pressure regulating three-phase transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203983006U true CN203983006U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420344682.3U Expired - Lifetime CN203983006U (en) | 2014-06-25 | 2014-06-25 | Capacity and pressure regulating three-phase transformer |
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| CN (1) | CN203983006U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124044A (en) * | 2014-06-25 | 2014-10-29 | 国家电网公司 | Capacity-adjusting and voltage-adjusting three-phase transformer |
| CN105529163A (en) * | 2015-12-02 | 2016-04-27 | 许继集团有限公司 | Automatic capacity regulation and voltage regulation combined type transformer system |
| CN106128724A (en) * | 2016-08-10 | 2016-11-16 | 江苏振光电力设备制造有限公司 | A kind of capacity and pressure regulating transformator |
| CN110619991A (en) * | 2018-06-20 | 2019-12-27 | 特变电工衡阳变压器有限公司 | Test transformer suitable for multifrequency |
| CN110620001A (en) * | 2018-06-20 | 2019-12-27 | 特变电工衡阳变压器有限公司 | Test transformer |
-
2014
- 2014-06-25 CN CN201420344682.3U patent/CN203983006U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124044A (en) * | 2014-06-25 | 2014-10-29 | 国家电网公司 | Capacity-adjusting and voltage-adjusting three-phase transformer |
| CN104124044B (en) * | 2014-06-25 | 2017-12-08 | 国家电网公司 | A kind of capacity and pressure regulating three-phase transformer |
| CN105529163A (en) * | 2015-12-02 | 2016-04-27 | 许继集团有限公司 | Automatic capacity regulation and voltage regulation combined type transformer system |
| CN106128724A (en) * | 2016-08-10 | 2016-11-16 | 江苏振光电力设备制造有限公司 | A kind of capacity and pressure regulating transformator |
| CN106128724B (en) * | 2016-08-10 | 2018-07-31 | 江苏振光电力设备制造有限公司 | A kind of capacity and pressure regulating transformer |
| CN110619991A (en) * | 2018-06-20 | 2019-12-27 | 特变电工衡阳变压器有限公司 | Test transformer suitable for multifrequency |
| CN110620001A (en) * | 2018-06-20 | 2019-12-27 | 特变电工衡阳变压器有限公司 | Test transformer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141203 |