CN208352111U - High pressure automatic reactive compensation amorphous alloy distribution transformer - Google Patents
High pressure automatic reactive compensation amorphous alloy distribution transformer Download PDFInfo
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- CN208352111U CN208352111U CN201820988382.7U CN201820988382U CN208352111U CN 208352111 U CN208352111 U CN 208352111U CN 201820988382 U CN201820988382 U CN 201820988382U CN 208352111 U CN208352111 U CN 208352111U
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Abstract
The utility model relates to high pressure automatic reactive compensation amorphous alloy distribution transformers, including three-phase high-voltage primary coil, three-phase low-voltage secondary coil, first group of tap switch, second group of tap switch and reactive-load compensation capacitor, first group of tap on every phase primary of high voltage coil passes through corresponding single-phase tap switch respectively and connects corresponding reactive-load compensation capacitor, pass through first group of tap switch control transformer multi-tap, capacitor end voltage is adjusted, to reach auto-reactive compensation purpose.Second group of tap on every phase primary of high voltage coil passes through corresponding second single-phase tap switch respectively and is connected, and changes the number of turns of every phase primary of high voltage coil, i.e. change transformer voltage ratio, to adjust low-pressure side voltage.Moreover, passing through the cooperation of first group of tap switch and second group of tap switch, realize that the cooperation of capacitor end voltage and low-pressure side voltage is adjusted.Also, transformer core uses three-column amorphous alloy iron core, and no-load loss obtains sharp fall, and energy-saving effect is significant.
Description
Technical field
The utility model relates to high pressure automatic reactive compensation amorphous alloy distribution transformers.
Background technique
Distribution network var compensation is multi-point and wide-ranging, load, and power factor is low.The compensation method of fixed capacitor group in parallel
Effect is bad.Other compensation ways such as SVC, SVG technology is complicated, investment is excessive, and generate harmonic pollution；Grouping switching device
Grouping can not be meticulous, and compensation effect is poor.
Authorization Notice No. is that the Chinese patent document of CN203632254U discloses a kind of auto-reactive compensation intelligent power distribution
Transformer, including three-phase high-voltage primary coil and three-phase low-voltage secondary coil are provided with one group on every phase primary of high voltage coil
Tap, every group of tap connect corresponding capacitor by tap switch.Tap switch is connect with controller, idle using capacitor
The relationship of power and voltage adjusts idle output by adjusting capacitor end voltage, completes reactive compensation.Though the transformer
So the idle output of adjusting can be realized by adjusting capacitor end voltage, still, can not pass through tap switch and adjust low-pressure side
Voltage.
Utility model content
The purpose of the utility model is to provide high pressure automatic reactive compensation amorphous alloy distribution transformers, existing to solve
Transformer can not by corresponding tap switch adjust low-pressure side voltage the problem of.
To achieve the above object, the utility model includes following technical scheme.
A kind of high pressure automatic reactive compensation amorphous alloy distribution transformer, including three-phase high-voltage primary coil, three-phase low-voltage
Secondary coil, first group of tap switch and reactive-load compensation capacitor, first group of tap switch include three first single-phase point
Switch is connect, first group of tap is provided on every phase primary of high voltage coil, first group of tap on every phase primary of high voltage coil point
Not Tong Guo corresponding first single-phase tap switch connect corresponding reactive-load compensation capacitor, the transformer further includes the second component
Switch is connect, second group of tap switch includes three the second single-phase tap switches, is also respectively provided on every phase primary of high voltage coil
There is second group of tap, second group of tap on every phase primary of high voltage coil passes through corresponding second single-phase tap switch respectively and be connected
It connects, to change the number of turns of every phase primary of high voltage coil；The iron core of the transformer is three-column amorphous alloy iron core.
By first group of tap switch control transformer multi-tap, so that capacitor end voltage is adjusted, to reach automatic nothing
The purpose of function compensation.Also, changes the number of turns of every phase primary of high voltage coil by adjusting second group of tap switch, that is, change and become
Transformer voltage ratio, to adjust low-pressure side voltage.Moreover, pass through the cooperation of first group of tap switch and second group of tap switch, it is real
The cooperation of existing capacitor end voltage and low-pressure side voltage is adjusted, when low-pressure side voltage is adjusted to certain value, the equal energy of reactive compensation
Enough adjust arrives appropriate value.Moreover, transformer core uses amorphous alloy strips, three-column amorphous alloy iron core is specifically used, it is empty
Load-loss decline 60%~70%, the no-load loss of transformer finished products only has the 30%-50% of silicon steel distribution transformer, energy conservation
Significant effect, and be combined with capacitor, more reduce the loss of Transformer.In addition, using three-phase three-column structure
For pattern compared with conventional three-phase and five-pole structure, machine body structure is narrower.
Further, the transformer includes three-phase voltage Acquisition Circuit, three-phase current Acquisition Circuit and control module, institute
Three-phase voltage Acquisition Circuit and three-phase current Acquisition Circuit output link control module are stated, the control module controls described in connection
First group of tap switch.
Further, the transformer includes shell, and the left side of shell, first component is arranged in the control module
The top that the control module is arranged in switch is connect, the right side of shell is arranged in the reactive-load compensation capacitor.Control module and
Reactive-load compensation capacitor is separately positioned on the two sides of transformer shell, realizes that power is electrically separated, reactive-load compensation capacitor will not be right
Control module causes electromagnetic interference, also, first group of tap switch is arranged near control module, convenient for opening first group of tap
Put row control into.In addition, first group of tap switch is placed in body side, reactive-load compensation capacitor, tap switch are placed in the other side
With the reasonable Arrangement of capacitor and three column amorphous bodies, the transformer shape produced and routine are the same as capacity amorphous alloy transformer
Shape is suitable, is more suitable for the installation and use of Guo Wang company distribute-electricity transformer district complete set of equipments.
Further, the first connecting sleeve is drawn on the shell, the upper end of the reactive-load compensation capacitor draws second
Connecting sleeve, first connecting sleeve and the second connecting sleeve pass through cable connection.
Further, bushing for drawing three-phase high-voltage primary coil is provided on the shell and for drawing
The low-tension bushing of three-phase low-voltage secondary coil.
Further, patchboard, the three-phase voltage Acquisition Circuit and three-phase current acquisition electricity are provided on the shell
Road connects the control module by patchboard output.
Further, the end face of iron core is laid with epoxy resin.
Detailed description of the invention
Fig. 1 is the schematic illustration of no-excitation voltage regulating tap switch；
Fig. 2 is transformer principle schematic diagram；
Fig. 3 is transformer main view；
Fig. 4 is transformer top view；
Fig. 5 is transformer body main view；
Fig. 6-a is three-column amorphous alloy iron core main view；
Fig. 6-b is three-column amorphous alloy iron core left view；
Fig. 6-c is A-A sectional view in Fig. 6-a；
Fig. 7-a is winding main view；
Fig. 7-b is winding left view；
Fig. 7-c is winding top view.
Specific embodiment
The utility model is described in more detail with reference to the accompanying drawing.
The present embodiment provides a kind of high pressure automatic reactive compensation amorphous alloy distribution transformers, including three-phase high-voltage primary line
Circle, three-phase low-voltage secondary coil, first group of tap switch, reactive-load compensation capacitor and second group of tap switch.First group of tap
Switch and second group of tap switch correspond to three-phase high-voltage primary coil.At the beginning of three-phase high-voltage primary coil includes three single-phase high voltages
Grade coil is provided with first group of tap and for any one single-phase high voltage primary coil on every phase primary of high voltage coil
Two groups of taps, first group of tap include at least one tap, and second group of tap includes at least one tap, certainly, in order to realize
It effectively adjusts, in the present embodiment, first group of tap includes at least two taps, and second group of tap includes at least two taps.Cause
This, for any one single-phase high voltage primary coil, which is provided with tap region at two, every place tap region
Corresponding one group of tap.
First group of tap switch is known as on-load tap changer by the present embodiment, and on-load tap changer includes three
First single-phase tap switch is known as single-phase on-load tap changer, every phase primary of high voltage coil by the first single-phase tap switch
On first group of tap pass through corresponding single-phase on-load tap changer respectively and connect corresponding reactive-load compensation capacitor.By
Two groups of tap switches are known as no-excitation voltage regulating tap switch, and no-excitation voltage regulating tap switch includes that three the second single-phase taps are opened
It closes, the second single-phase tap switch is known as single-phase no-excitation voltage regulating tap switch, second group of pumping on every phase primary of high voltage coil
Head is connected by corresponding single-phase no-excitation voltage regulating tap switch respectively.Fig. 1 is the schematic diagram of second group of tap switch, each the
Second group of tap that there is two single-phase tap switches one end of tapping point to be correspondingly connected with each single-phase high voltage primary coil, each second is single
The other end of phase tap switch is connected.
As shown in Fig. 2, providing a kind of specific example of above scheme.As shown in Fig. 2, transformer winding connections are the side Yyn0
Formula.Three-phase high-voltage primary coil Y connects, the tap of tap region at first, i.e. first group of tap of A phase primary of high voltage coil has A1-
First group of tap of A7, B phase primary of high voltage coil has B1-B7, and first group of tap of C phase primary of high voltage coil has C1-C7, phase
Umber of turn is about the 5%-8% of winding total number of turns between adjacent two taps.These taps are connected respectively to each phase on-load voltage regulation point
It connects on the correspondence contact of switch and (only marks the wiring of every one tap of phase on Fig. 2, other are omitted herein in the same way), and is each
Phase on-load tap changer provides contact for each phase reactive-load compensation capacitor, and capacitor is connected into Y connection.When on-load voltage regulation point
When connecing the switch a certain gear of selection, voltage is the end voltage of capacitor at the gear.
As shown in Fig. 2, tap region tap at second, i.e. second group of tap of A phase primary of high voltage coil has X1-X5, B phase
Second group of tap of primary of high voltage coil has Y1-Y5, and second group of tap of C phase primary of high voltage coil has Z1-Z5, here by three
Second single-phase tap switch is integrated into a three-phase knob tap switch, and each phase tap is separately connected no-excitation voltage regulating tap switch
Correspondence contact (wiring of every one tap of phase only being marked on Fig. 2, other are omitted herein in the same way), non-excitation pressure adjustment point
It meets switch internal Y to connect, high-low pressure winding no-load voltage ratio can be adjusted by adjusting the gear of no-excitation voltage regulating tap switch, to adjust
Low-pressure side voltage.
In addition, low pressure winding yn connects.
Therefore, there are two tap region, one of tap region tap connection on-load voltage regulation taps for three-phase high-voltage primary coil
Switch, and Y is connected by on-load tap changer and connects capacitor group；Another tap region tap connects non-excitation pressure adjustment tap
Switch can adjust low-pressure side voltage by regulating switch gear.
In order to realize the automatic control of reactive compensation, three-phase voltage Acquisition Circuit is provided in transformer, three-phase current is adopted
Collector and control module, wherein three-phase voltage Acquisition Circuit and three-phase current Acquisition Circuit are for acquiring Three-Phase Transformer electricity
Pressure and current data, here, three-phase voltage Acquisition Circuit and three-phase current Acquisition Circuit are arranged in low-pressure side, as shown in Figure 2.Three
Phase voltage Acquisition Circuit and three-phase current Acquisition Circuit export link control module, control module control connection on-load voltage regulation tap
Switch.In the present embodiment, control module includes microcontroller and on-load tap changer controller, and microcontroller acquires low pressure
The signals such as side voltage, electric current, power factor, and action signal, on-load voltage regulation point are issued to on-load tap changer controller
Switch controller control on-load tap changer regulation stall is connect, so that capacitor bank voltage is adjusted, to reach automatic idle
The purpose of compensation.
As shown in figure 3,1 is microcontroller, 2 be on-load tap changer controller, microcontroller 1 and on-load voltage regulation
Tap switch controller 2 is in the stainless steel chest of 9 side wall of oil tank of transformer, moreover, microcontroller 1 and on-load voltage regulation tap
Switch controller 2 is arranged in the left side of fuel tank 9.Oil level indicator 3 has mark transformer oil level and pressure relief function.On-load voltage regulation
Tap switch 4 connect by cable with on-load tap changer controller 2, be on-load tap changer 4 provide power supply with
Action signal can adjust voltage gear, to adjust output voltage in transformer load.On-load tap changer 4 is set
It sets in the top of 2 place chest of microcontroller 1 and on-load tap changer controller.Three-phase voltage Acquisition Circuit and three-phase electricity
It flows Acquisition Circuit and microcontroller 1 is connected by CT patchboard 5, the collected voltage and current signals of low-pressure side are passed through into CT wiring
Disk 5 is exported to microcontroller 1.Bushing 6 and low-tension bushing 7 are provided on oil tank of transformer 9, effect is will be in fuel tank 9
Three-phase high-voltage primary coil and three-phase low-voltage secondary coil are drawn out to outside fuel tank 9, play connection and insulating effect.Reactive compensation capacitor
Device 8 totally three, in the stainless steel chest on 9 wall of fuel tank, it is connected into Y shape, and reactive-load compensation capacitor 8 is arranged in 9 right side of fuel tank
Side.The first connecting sleeve is drawn on fuel tank 9, the second connecting sleeve, the first connecting sleeve are drawn in the upper end of reactive-load compensation capacitor 8
Pass through cable connection with the second connecting sleeve.The material of fuel tank 9 is steel plate, it is to protect the shell of transformer body, and contain
The container of oil, and be the skeleton of assembling transformer outer structural parts, while the heat for being generated body loss by transformer oil 10
Amount is dissipated in atmosphere in a manner of convection current and radiation.As shown in figure 4, off circuit tap changer 11 by transformation winding tap come
Change transformer voltage ratio, to adjust low-pressure side voltage.
As shown in figure 5, the material of folder 11 is steel plate or fashioned iron, to fixed winding 14 and iron core 12.Iron core 12 is three
Pole amorphous alloy iron core, iron core 12 only have silicon steel to match using the no-load loss of transformer finished products when three-column amorphous alloy iron core
The 30%-50% of piezoelectric transformer, energy-saving effect are significant.Body insulating part 13 includes all kinds of insulating parts and pressing plate etc., main function
It is to provide insulation to iron core 12 for winding 14, and by folder 11 and draw the fixed winding 14 of screw rod.Current transformer 15 is mounted in low
Side is pressed, provides current signal for microcontroller 1.CT patchboard 16 (i.e. CT patchboard 5 in Fig. 3) is for acquiring low-pressure side
To voltage, current signal be connected to microcontroller 1.Each phase tap of high pressure is connect respectively in 17 (i.e. Fig. 3 of on-load tap changer
In on-load tap changer 4) each phase connector on, and on-load tap changer 17 provides one for every phase capacitor
Connector connects reactive-load compensation capacitor 8 by two groups of right side, six casings (can also pass through American end) respectively.
Fig. 6-a to 6-c is three-column amorphous alloy iron core, in which: 21 be big amorphous alloy core, and 22 be small amorphous alloy
Iron core, 23 be amorphous alloy core, and 24 be amorphous alloy core epoxy resin layer.Three-column amorphous alloy iron core 23 can be single
Layer is made of the big amorphous alloy core 21 of 2 small amorphous alloy core 22 and 1；It can also be bilayer or multilayer, required iron
2 times or more times when calculation amount is single layer.Single amorphous alloy core 23 is by amorphous alloy strips by shearing, winding, end face
The processes such as epoxy resin cure, annealing are made, and entire amorphous alloy core end face has about other than the overlap of iron core lower part
The epoxy resin 24 of 2mm, effect are solidification amorphous alloy cores 23, and body is not likely to produce fragment, transformer short-circuit when assembling
When amorphous alloy core 23 can play the role of support winding 14.
Fig. 7-a to Fig. 7-c is the winding schematic diagram by taking A phase as an example, in which: 31 be low pressure winding, and 32 be high-voltage winding,
33 be high-low pressure winding oil duct, and 34 be half oil duct of high-voltage winding, and 35 be half oil duct of low pressure winding, and 36 connect for low pressure winding tail head
Copper bar, 37 be the first head connecting copper bar of low pressure winding, and 38 be high-voltage winding tap.Low pressure winding 31 is insulated by copper foil, layer insulation, end
Coiling multilayer is constituted in rectangular mould.Start coiling after the copper foil welding first head connecting copper bar 37 of low pressure winding, every layer when coiling
Between use some gummed papers or other insulating materials as layer insulation separate, and use paperboard strip or dispensing paper slip as end insulate be wound on copper foil
On upper and lower end face.Half oil duct 35 of low pressure winding is added in specified position when coiling, half oil duct 35 of low pressure winding is paperboard strip stickup
It is made on gummed paper, effect is to provide the oil flow channel of the heat dissipation of low pressure winding 31.Low pressure winding copper foil tail end welds low pressure
Winding tail head connecting copper bar 36 is drawn.
After 31 coiling of low pressure winding, one layer of 0.5mm cardboard is first wrapped in its outer layer, then wrap high-low pressure winding oil duct
33, finally wrap two layers of 0.5mm cardboard.High-low pressure winding oil duct 33 is pasted on a gummed paper for paperboard strip and is made, and effect is
The oil flow channel of high-low pressure winding heat dissipation is provided, and plays the role of insulating between high-low pressure winding.
High-voltage winding 32 is by insulated conductor, layer insulation, end insulation coiling on the cardboard in 33 outside of high-low pressure winding oil duct
Multilayer is constituted.Every interlayer uses some gummed papers or other insulating materials to separate as layer insulation when coiling, and uses paperboard strip exhausted as end
Edge is wound on 32 upper and lower end face of high-voltage winding.Half oil duct 34 of high-voltage winding, half oil of high-voltage winding is added in specified position when coiling
Road 34 is pasted on a gummed paper for paperboard strip and is made, and effect is to provide the oil flow channel of the heat dissipation of high-voltage winding 32.
High-voltage winding tap 38 adds wrinkle paper tube inside high-voltage winding 32 or other insulation are axially retracted to winding
End.By taking A phase as an example, first head A is first axially extracted out, first head A guides bushing into, then extracts A1-A7 tap out, is connected separately with
Voltage adjustment of on-load tap switch corresponding joints, umber of turn is about the 5%-8% of winding total number of turns between two neighboring tap, is finally extracted out
X1-X5 tap is separately connected off circuit tap changer corresponding joints.
Specific embodiment is presented above, but the utility model is not limited to described embodiment.This is practical
Novel basic ideas are above-mentioned basic scheme, for those of ordinary skill in the art, introduction according to the present utility model,
The model, formula, parameter for designing various modifications do not need to spend creative work.The principles of the present invention are not being departed from
The protection scope of the utility model is still fallen with the change, modification, replacement and modification carried out in the case where spirit to embodiment
It is interior.
Claims (7)
1. a kind of high pressure automatic reactive compensation amorphous alloy distribution transformer, including three-phase high-voltage primary coil, three-phase low-voltage time
Grade coil, first group of tap switch and reactive-load compensation capacitor, first group of tap switch include three the first single-phase taps
It switchs, is provided with first group of tap on every phase primary of high voltage coil, first group of tap difference on every phase primary of high voltage coil
Corresponding reactive-load compensation capacitor is connected by corresponding first single-phase tap switch, which is characterized in that the transformer also wraps
Second group of tap switch is included, second group of tap switch includes three the second single-phase tap switches, every phase primary of high voltage coil
On be also provided with second group of tap, second group of tap on every phase primary of high voltage coil passes through corresponding second single-phase point respectively
It connects switch to be connected, to change the number of turns of every phase primary of high voltage coil；The iron core of the transformer is three pillar type amorphous alloyed iron
The heart.
2. high pressure automatic reactive compensation amorphous alloy distribution transformer according to claim 1, which is characterized in that the change
Depressor includes three-phase voltage Acquisition Circuit, three-phase current Acquisition Circuit and control module, the three-phase voltage Acquisition Circuit and three
Phase current Acquisition Circuit exports link control module, and the control module control connects first group of tap switch.
3. high pressure automatic reactive compensation amorphous alloy distribution transformer according to claim 2, which is characterized in that the change
Depressor includes shell, and the left side of shell is arranged in the control module, and first group of tap switch is arranged in the control mould
The right side of shell is arranged in the top of block, the reactive-load compensation capacitor.
4. high pressure automatic reactive compensation amorphous alloy distribution transformer according to claim 3, which is characterized in that the shell
The first connecting sleeve is drawn on body, the second connecting sleeve, first sleeve are drawn in the upper end of the reactive-load compensation capacitor
Pipe and the second connecting sleeve pass through cable connection.
5. high pressure automatic reactive compensation amorphous alloy distribution transformer according to claim 3, which is characterized in that the shell
The bushing for drawing three-phase high-voltage primary coil and the low pressure for drawing three-phase low-voltage secondary coil are provided on body
Casing.
6. high pressure automatic reactive compensation amorphous alloy distribution transformer according to claim 3, which is characterized in that the shell
It is provided with patchboard, the three-phase voltage Acquisition Circuit and three-phase current Acquisition Circuit on body and passes through patchboard output connection
The control module.
7. according to claim 1 to high pressure automatic reactive compensation amorphous alloy distribution transformer, feature described in 6 any one
It is, the end face of iron core is laid with epoxy resin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820988382.7U CN208352111U (en) | 2018-06-25 | 2018-06-25 | High pressure automatic reactive compensation amorphous alloy distribution transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820988382.7U CN208352111U (en) | 2018-06-25 | 2018-06-25 | High pressure automatic reactive compensation amorphous alloy distribution transformer |
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| CN208352111U true CN208352111U (en) | 2019-01-08 |
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ID=64880954
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922759A (en) * | 2018-06-25 | 2018-11-30 | 河南森源电气股份有限公司 | A kind of high pressure automatic reactive compensation amorphous alloy distribution transformer |
| CN114171303A (en) * | 2021-11-09 | 2022-03-11 | 常德国力变压器有限公司 | Voltage regulating wiring structure of transformer winding |
-
2018
- 2018-06-25 CN CN201820988382.7U patent/CN208352111U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922759A (en) * | 2018-06-25 | 2018-11-30 | 河南森源电气股份有限公司 | A kind of high pressure automatic reactive compensation amorphous alloy distribution transformer |
| CN108922759B (en) * | 2018-06-25 | 2023-10-20 | 河南森源电气股份有限公司 | High-voltage automatic reactive compensation amorphous alloy distribution transformer |
| CN114171303A (en) * | 2021-11-09 | 2022-03-11 | 常德国力变压器有限公司 | Voltage regulating wiring structure of transformer winding |
| CN114171303B (en) * | 2021-11-09 | 2024-02-13 | 常德国力变压器有限公司 | Voltage regulating wiring structure of transformer winding |
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