CN104124044B - A kind of capacity and pressure regulating three-phase transformer - Google Patents
A kind of capacity and pressure regulating three-phase transformer Download PDFInfo
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- CN104124044B CN104124044B CN201410295131.7A CN201410295131A CN104124044B CN 104124044 B CN104124044 B CN 104124044B CN 201410295131 A CN201410295131 A CN 201410295131A CN 104124044 B CN104124044 B CN 104124044B
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 39
- 238000004804 winding Methods 0.000 claims abstract description 96
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 7
- 230000008901 benefit Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 239000002828 fuel tank Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 11
- 230000007246 mechanism Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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- 238000004134 energy conservation Methods 0.000 description 1
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Abstract
The present invention relates to a kind of capacity and pressure regulating three-phase transformer, by tracking load change and secondary voltage fluctuation regulation transformer output capacity and output voltage.Three-phase transformer in Large Copacity, high pressure winding be triangle connection, each phase low pressure winding by after the second winding and tertiary winding parallel connection again with the first windings in series；For three-phase transformer in low capacity, the high pressure winding of transformer is changed to Y-connection, 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 are 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, there is at least one tap at least one winding on this two sections of windings, and each tap switchs each corresponding terminal respectively at pressure regulating and capacitance regulating and is connected.Pass through the action of switch on/off electric mechanism, you can regulation output capacity and output voltage.
Description
Technical field
The present invention relates to a kind of capacity and pressure regulating three-phase transformer, belong to field of power.
Background technology
The existing distribution transformer in China, including box-type substation its transformer rated capacity mostly immobilize and by with
Family peak load is prepared.But it is uneven (such as when busy farming season and the Spring Festival that seasonal electricity consumption is often presented in the rural power grids in China
There is fully loaded even overload, and other times load is smaller) and low (the regional transformer annual rate of load condensate having of average load rate
Even below 25%) the features such as.This results in that electric network reactive-load component is excessive, and transformer noload losses is with respect to transmission line capability ratio mistake
Greatly, a large amount of waste of energy are made in reactive current loss and transformer noload losses.What is occurred in the market has load to adjust on a small quantity
Hold transformer, can part solve the above problems, but its function is single, can only adjust output capacity, it is impossible to while adjusts defeated
Go out capacity and output voltage.Be difficult to meet China become field of power distribution to energy-conservation, intellectuality, high efficiency, stable power-supplying quality hair
The requirement of exhibition.
The content of the invention
It is an object of the invention to provide a kind of capacity and pressure regulating three-phase transformer, solving according to the change of payload and
The height of line voltage, it is impossible to while the output capacity and output voltage of transformer are adjusted, reduce zero load during transformer station high-voltage side bus
The problem of loss and regulated output voltage.
To achieve the above object, the solution of the present invention is a kind of capacity and pressure regulating three-phase transformer, each phase of three-phase transformer
Low pressure winding includes the first winding, the second winding and the tertiary winding, and the sectional area of wire of the first winding is the second winding or the 3rd
Twice of winding, the second winding are identical with the number of turn of the tertiary winding.
When transformer load is in the Large Copacity section of setting, the high pressure winding of three-phase transformer connects for triangle
Connect, each phase low pressure winding be the second winding it is in parallel with the tertiary winding after and the first windings in series.
When transformer load is in the low capacity section of setting, the high pressure winding of three-phase transformer is Y-connection,
Each phase low pressure winding is the first winding, the second winding, the tertiary winding are sequentially connected in series.
First winding of the two end terminals of each phase high pressure winding and each phase low pressure winding, the second winding, the two of the tertiary winding
End terminal 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 extremely
A rare winding has at least one tap at the middle part of the phase high pressure winding, and tap is connected to capacity and pressure regulating and opened
In the respective terminal of pass.
Capacity and pressure regulating switch switchs for loaded capacity regulating voltage regulating, fuel tank of the loaded capacity regulating voltage regulating switch installed in three-phase transformer
It is interior.
Three-phase transformer is equipped with switch board, and the switch board includes：Transformer 11, switch board cabinet 12, the more work(of three-phase and four-line
Can ammeter 13, electricity management terminal 14, capacitor bank controlling switch 15, controller 16, altogether intelligent low-pressure on-load switch 17, benefit electricity
Container group 18, point benefit capacitor bank 19, lead-in circuit breaker 20, wire-outgoing breaker 21.
The present invention by track load change and secondary voltage fluctuation automatically adjust terminal power distribution transformer output capacity and
Output voltage, have the characteristics that intelligence degree is high, compact-sized, easy for installation.
Brief description of the drawings
Fig. 1 is winding catenation principle figure when three-phase transformer is Large Copacity；
Fig. 2 is winding catenation principle figure when three-phase transformer is low capacity；
Fig. 3 is switch board structural representation；
Fig. 4 is three-phase transformer and switch board overall schematic.
Embodiment
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 and Fig. 2 is the general principle wiring diagram of capacity and pressure regulating three-phase transformer.Fig. 1 is three-phase transformer in Large Copacity
When wiring diagram, three-phase transformer in Large Copacity, high pressure winding be triangle connection, each phase low pressure winding by 2 and 3 two sections around
Connected again with 1 after group is in parallel.Fig. 2 is the wiring diagram that three-phase transformer is in low capacity, and three-phase transformer is in low capacity, transformation
The high pressure winding of device is changed to Y-connection, and to ensure that current density is held essentially constant in wire, low pressure winding is by 1,2,3 three section
Windings in series forms.Due to now low pressure winding number of turn increase, magnetic flux density in iron core is caused to substantially reduce, so as to significantly drop
The open circuit loss and noise of low transformer.The sectional area of wire of 1 winding is twice of 2 windings or 3 windings, the number of turn of winding 2 and 3
It is identical.The two end terminals of each winding of three-phase transformer high-pressure side and low-pressure side are each right with loaded capacity regulating voltage regulating switch respectively
Answer terminal to be connected, the action of the switch on/off electric mechanism in being switched by loaded capacity regulating voltage regulating, change three-phase transformer high pressure winding
Connected mode and the series-parallel change of low pressure winding, realize the output capacity of regulation transformer.
Each phase high voltage winding component of three-phase transformer is two sections of windings, is winding 4 and 5, as shown in the figures 1 and 2.4 or 5
On, there are several taps, each tap is connected with each corresponding terminal of on-load voltage regulation capacitance switch, adjusted by on-load voltage regulation respectively
Hold the action of the switch on/off electric mechanism in switch, change the order of connection of each tap, you can regulation output voltage.It is first during work
First preset a preferable secondary output voltage and an extreme difference voltage.When line voltage fluctuates, secondary voltage can occur
Change, when variable quantity exceedes extreme difference voltage, the motor drive mechanism of switch acts, and changes the tap joint position of high voltage side of transformer,
Secondary voltage is set to return in predetermined voltage range.
Capacity transfer and pressure regulation are integrated in a loaded capacity regulating voltage regulating switch, and a public motor-operating mechanism, are reduced
The volume of switch simultaneously reduces cost.Loaded capacity regulating voltage regulating switch passes through interconnector in the fuel tank of three-phase transformer
It is connected with each terminal of transformer.
Each terminal of high-low pressure winding of transformer and each tap of high pressure winding are in the fuel tank of transformer respectively with having
The corresponding static terminal connection of load capacity and pressure regulating switch.When needing capacity transfer, driven by the motor drive mechanism of loaded capacity regulating voltage regulating switch
Moved end son action to inductive switch, to change Transformer Winding connected mode and series-parallel change, realizes regulation transformer
Output capacity；When needing to adjust output voltage, motor drive mechanism is again may be by change the tap joint position of high pressure winding
To realize.
Fig. 3 is the switch board that three-phase transformer is equipped with.Switch board includes transformer 11, switch board cabinet 12, three-phase and four-line
Multifunction electric meter 13, electricity management terminal 14, capacitor bank controlling switch 15, controller 16, intelligent low-pressure on-load switch 17, altogether
Mend capacitor bank 18, point benefit capacitor bank 19, lead-in circuit breaker 20, wire-outgoing breaker 21.Switch board principle is to pass through transformer
Whether the output current and output voltage for detecting three-phase transformer determine capacity and pressure regulating switch as the control signal of controller
Action, while coordinate electricity management terminal, capacitor bank, inlet-outlet line breaker and intelligent low-pressure on-load switch using controller,
Realize the functions such as reactive-load compensation, regulation three-phase imbalance.
Transformer is connected with Intelligent control cabinet by public base, is illustrated in figure 4 overall schematic, including：It is public
Base 31, three-phase transformer 32, loaded capacity regulating voltage regulating switch 33, switch board 34, realize integrated design, facilitate live peace
Dress.
Specific embodiment is presented above, but the present invention is not limited to described embodiment.The base of the present invention
This thinking is above-mentioned basic scheme, for those of ordinary skill in the art, according to the teachings of the present invention, designs various changes
The model of shape, formula, parameter simultaneously need not spend creative work.It is right without departing from the principles and spirit of the present invention
The change, modification, replacement and modification that embodiment is carried out are still fallen within protection scope of the present invention.
Claims (2)
1. a kind of capacity and pressure regulating three-phase transformer, it is characterised in that each phase low pressure winding of the three-phase transformer includes first
Winding, the second winding and the tertiary winding, the sectional area of wire of the first winding are twice of the second winding or the tertiary winding, second around
Group is identical with the number of turn of the tertiary winding；
When transformer load is in the Large Copacity section of setting, the high pressure winding of the three-phase transformer connects for triangle
Connect, each phase low pressure winding be the second winding it is in parallel with the tertiary winding after and the first windings in series；When transformer load is in setting
Low capacity section in when, the high pressure winding of the three-phase transformer is Y-connection, and each phase low pressure winding is the first winding, the
Two windings, the tertiary winding are sequentially connected in series；
First winding of the two end terminals of each phase high pressure winding and each phase low pressure winding, the second winding, the both ends end of the tertiary winding
Son is connected with each respective terminal of capacity and pressure regulating switch respectively；
Each phase high voltage winding component of the three-phase transformer is the 4th winding and the 5th winding, the 4th winding and the 5th winding
In at least one winding have at least one tap at the middle part of the phase high pressure winding, the tap is connected to tune
In the respective terminal for holding tap changer；
The three-phase transformer is equipped with switch board, and the switch board includes：Transformer (11), switch board cabinet (12), three-phase and four-line
Multifunction electric meter (13), electricity management terminal (14), capacitor bank controlling switch (15), controller (16), intelligent low-pressure load
Switch (17), mend capacitor bank (18), point benefit capacitor bank (19), lead-in circuit breaker (20), wire-outgoing breaker (21) altogether；It is described
Switch board cabinet (12) includes the cabinet Part I and cabinet Part II that left and right is set, transformer (11), lead-in circuit breaker
(20) it is successively set on up and down on cabinet Part I with wire-outgoing breaker (21), three-phase and four-line multifunction electric meter (13), electricity consumption
Management terminal (14), capacitor bank controlling switch (15), controller (16), intelligent low-pressure on-load switch (17), capacitor is mended altogether
Group (18) and a point benefit capacitor bank (19) are arranged on cabinet Part II.
2. capacity and pressure regulating three-phase transformer according to claim 1, it is characterised in that the capacity and pressure regulating switch is to have load
Capacity and pressure regulating switch, the loaded capacity regulating voltage regulating switch is in the fuel tank of the three-phase transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410295131.7A CN104124044B (en) | 2014-06-25 | 2014-06-25 | A kind of capacity and pressure regulating three-phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410295131.7A CN104124044B (en) | 2014-06-25 | 2014-06-25 | A kind of capacity and pressure regulating three-phase transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104124044A CN104124044A (en) | 2014-10-29 |
| CN104124044B true CN104124044B (en) | 2017-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410295131.7A Active CN104124044B (en) | 2014-06-25 | 2014-06-25 | A kind of capacity and pressure regulating three-phase transformer |
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| Country | Link |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106571213A (en) * | 2016-10-28 | 2017-04-19 | 许继集团有限公司 | Y-shaped connection transformer |
| CN108257765B (en) * | 2018-01-16 | 2024-10-11 | 丹东天楾电气有限公司 | Polygonal three-dimensional coiled iron core on-load capacity-regulating voltage-regulating transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202034210U (en) * | 2011-04-12 | 2011-11-09 | 山东辉煌电力设备制造有限公司 | Dry-type transformer capable of adjusting capacity and voltage |
| CN202258746U (en) * | 2011-09-26 | 2012-05-30 | 扬州华鼎电器有限公司 | On-load capacity-regulating transformer |
| CN103219137A (en) * | 2013-03-26 | 2013-07-24 | 国家电网公司 | Self-adapted load type distribution transformer |
| CN103268815A (en) * | 2013-05-20 | 2013-08-28 | 南阳市鑫特电气有限公司 | On-load voltage and capacitance regulated transformer |
| CN203983006U (en) * | 2014-06-25 | 2014-12-03 | 国家电网公司 | Capacity and pressure regulating three-phase transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5630714A (en) * | 1979-08-22 | 1981-03-27 | Hitachi Ltd | On-load voltage regulating transformer |
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2014
- 2014-06-25 CN CN201410295131.7A patent/CN104124044B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202034210U (en) * | 2011-04-12 | 2011-11-09 | 山东辉煌电力设备制造有限公司 | Dry-type transformer capable of adjusting capacity and voltage |
| CN202258746U (en) * | 2011-09-26 | 2012-05-30 | 扬州华鼎电器有限公司 | On-load capacity-regulating transformer |
| CN103219137A (en) * | 2013-03-26 | 2013-07-24 | 国家电网公司 | Self-adapted load type distribution transformer |
| CN103268815A (en) * | 2013-05-20 | 2013-08-28 | 南阳市鑫特电气有限公司 | On-load voltage and capacitance regulated transformer |
| CN203983006U (en) * | 2014-06-25 | 2014-12-03 | 国家电网公司 | Capacity and pressure regulating three-phase transformer |
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| CN104124044A (en) | 2014-10-29 |
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