CN207705015U - A kind of self-protected amorphous alloy transformer - Google Patents
A kind of self-protected amorphous alloy transformer Download PDFInfo
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- CN207705015U CN207705015U CN201721840955.3U CN201721840955U CN207705015U CN 207705015 U CN207705015 U CN 207705015U CN 201721840955 U CN201721840955 U CN 201721840955U CN 207705015 U CN207705015 U CN 207705015U
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- voltage winding
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- amorphous alloy
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Abstract
The utility model discloses a kind of self-protected amorphous alloy transformer, belong to and become distribution technique field comprising magnetic core, magnetic core are equipped with high-voltage winding, are characterized in that：It is in series with impedance regulating in the high-voltage winding.This transformer in high-voltage winding due to being in series with impedance regulating, the impedance magnitude in high-voltage winding circuit can be adjusted by impedance regulating, to change the electric current in high-voltage winding, it is more than specified value to limit it, prevent magnetic saturation phenomenon, so that the electric energy of high-voltage winding smoothly passes to low pressure winding by magnetic circuit, the lasting transmission of electric energy is realized；The online protection for more importantly realizing transformer reaches not impaired purpose not by transformer is scaled off from circuit, and the state that can resume operation automatically when electric current lowers.
Description
Technical field
The utility model, which belongs to, becomes distribution technique field, and in particular to a kind of self-protected amorphous alloy transformer is also suitable
In common transformer.
Background technology
Non-crystaline amorphous metal is gradually big applied to power consumption is referred to as due to having the advantages that magnetic permeability is high, no-load loss is low
In the important power equipment-transformer at family.Then, it is developed amorphous alloy transformer, by non-crystaline amorphous metal instead of tradition
Silicon sheet core, so that transformer loss is reduced to original 25% or so, for transformer it is energy-saving be made that it is revolutionary
It changes.
But in practical applications, it is found that Non voltage output occurs sometimes in amorphous alloy transformer, when loading reduction
Especially frequently, even by the coil burnout of transformer, amorphous alloy iron core is also destroyed, and transformer is caused integrally to scrap, and
And amorphous alloy transformer is expensive, greatly reduces the cost performance of amorphous alloy transformer.Cause amorphous alloy variable pressure
Device can not promote and apply on a large scale, mostly still use silicon sheet core transformer so that transformer it is substantially energy-saving also with
Become empty talk.
Invention content
The technical problem to be solved by the utility model is to provide a kind of self-protected amorphous alloy transformers, can limit height
The electric current of winding loop is pressed to increase.
In order to solve the above technical problems, the technical solution of the utility model is：Design a kind of self-protected amorphous alloy transformation
Device, including magnetic core, magnetic core are equipped with high-voltage winding, it is characterised in that：Further include controller and current sensing means, the high pressure
Impedance regulating is in series on winding, current sensing means detects the electric current in high-voltage winding circuit, and controller is according to electric current
The detection information that detection device provides changes the impedance magnitude of impedance regulating.
Preferably, the impedance regulating includes closed loop yoke, and primary coil and secondary wire are wound in closed loop yoke
Circle, primary coil are connected in the circuit of high-voltage winding, and resistance adjustment branch is arranged in the circuit of secondary coil.
Preferably, shorting stub and high impedance branch line, shorting stub and high impedance branch are set in the resistance adjustment branch
One end of line is connected in parallel on the other end that one end of secondary coil, the other end connect secondary coil by gated end.
Preferably, the connection status of controller control gated end.
Preferably, the controller is also connected with display, and display shows the detected value of current sensing means.
Preferably, ratio of the controller also between the detected value of calculating current detection device and given load current value
Value, display show ratio.
Compared with prior art, the utility model has the beneficial effects that：
1, due to being in series with impedance regulating in high-voltage winding, high-voltage winding can be adjusted by impedance regulating
Impedance magnitude in circuit, to change the electric current in high-voltage winding, it is more than specified value to limit it, and it is existing to prevent magnetic saturation
As so that the electric energy of high-voltage winding smoothly passes to low-pressure side by magnetic circuit, realizes the lasting transmission of electric energy；It is more importantly real
The online protection of transformer is showed, and normal operating condition can be restored automatically, has been cut from circuit not by by transformer
Get off to reach not impaired purpose.
2, specific logical since impedance regulating is using the form for winding primary coil and secondary coil in closed loop yoke
The structure crossed primary coil to be connected in the circuit of high-voltage winding, and resistance adjustment branch is arranged in the circuit of secondary coil is come real
It is existing, when electric current is less than given value, secondary coil short circuit, the impedance that primary coil generates can be made to tend to 0, transformer is in just
Normal working condition, there is no increase high-voltage winding side additional power consumption；When electric current is more than given value, make secondary coil
Circuit is constituted by high impedance branch, high impedance branch makes secondary coil close to open-circuit condition, at this time high-voltage winding circuit
In impedance tend to ∞, force electric current to decline；In addition, this impedance regulating is simple in structure and does not change the sinusoidal baud of voltage
Property.
3, due to having added controller and current sensing means, it can realize the automatic and accurate control of system, complete intelligence
Change management.
4, due to display also show current sensing means detected value and with the ratio of load current value, enable to work
The current conditions in high-voltage winding circuit are visually known as personnel, to take safeguard procedures in time.
5, the utility model is simple in structure, can be returned where automatically adjusting according to the current conditions of transformer high-voltage winding
The impedance on road, prevents magnetic saturation, to ensure the reliable and stable operation of transformer, convenient in industry promoting and applying.
Description of the drawings
Fig. 1 is the electrical schematic diagram of the utility model；
Fig. 2 is the control principle drawing of resistance adjustment branch；
Fig. 3 is the logic control chart of controller.
It is marked in figure：1, magnetic core；2, high-voltage winding；3, primary coil；4, closed loop yoke；5, secondary coil；6, resistance tune
Save branch；61, shorting stub；62, high impedance branch line；7, current sensing means；8, controller；9, display.
Specific implementation mode
The utility model is described in further detail with specific implementation mode below in conjunction with the accompanying drawings.
As shown in Figure 1, the utility model is equipped with high-voltage winding 2 on magnetic core 1, series primary coils 3 in high-voltage winding 2,
Primary coil 3 is wrapped in closed loop yoke 4, and secondary coil 5 is also wound in closed loop yoke 4, is arranged in the circuit of secondary coil 5
Resistance adjustment branch 6.As shown in Fig. 2, resistance adjustment branch 6 is made of shorting stub 61 and high impedance branch line 62, shorting stub 61
It is connected in parallel on one end of secondary coil 5 with one end of high impedance branch line 62, the other end connects the another of secondary coil 5 by gated end
One end, gated end makes secondary coil 5 that can only constitute circuit with shorting stub 61 or high impedance branch line 62, and can pass through choosing
Go side switches between shorting stub 61 and high impedance branch line 62.
In order to realize that the automatic switchover and control of resistance adjustment branch 6, the utility model are also set in 2 circuit of high-voltage winding
Current sensing means 7 has been set, to detect the electric current in 2 circuit of high-voltage winding, and the current information of detection has been passed into control
Device 8, the detection information that controller 8 is provided according to current sensing means 7, controls the connection status of gated end, i.e. selection is connected short
Wiring 61 or high impedance branch line 62, to change the impedance magnitude being connected in 2 circuit of high-voltage winding.
In order to which staff can compare the current conditions being visually known in 2 circuit of high-voltage winding, controller 8 is also connected with
Display 9, detected value for showing current sensing means 7.Controller 8 also calculates detected value and given load current value
Between ratio, and by display 9 show the ratio so that staff be visually known detection electric current relative to rated current
Departure degree.
The course of work of the utility model is as follows：
When transformer is in operating status, as shown in figure 3, current sensing means 7 detects in 2 circuit of high-voltage winding in real time
Electric current I, and the current signal of detection is passed into controller, as I ＜ 1.2N（N is the load current value of transformer, herein L
Value 1.2）, controller 8 controls gated end, is turned on shorting stub 61, i.e., secondary coil 5 constitutes circuit by shorting stub 61,
The shorted on both ends of secondary coil 5, the at this time impedance of primary coil 3 tend to 0, the essentially only resistance of itself of primary coil 3, very
External busbar can be conveyed the electric energy come and continuously pass to low-pressure side by small, not additional power consumption, transformer, be
Power supply for electrical equipment；As 1.2N≤I ＜ 1.5N, controller 8 sends out alarm, staff is warned, to take timely measure；When
When I >=1.5N, controller 8 controls gated end and connects high impedance branch line 62, i.e. secondary coil 5 passes through 62 structure of high impedance branch line
At circuit, the impedance of primary coil 3 at this time tends to ∞ so that the impedance in 2 circuit of transformer high-voltage winding tends to ∞, forces electricity
Drop is flowed down, until being down to safety value hereinafter, transformer is avoided magnetic saturation phenomenon occur, to further prevent transformer to be burnt
It ruins.Above-mentioned protection is realized in the course of work of transformer, does not have an impact its basic change distributing function.And in electricity
After stream is down within the scope of above-mentioned safety value, gated end is connected shorting stub 61 by controller 8 automatically, makes the impedance of primary coil 3 again
It is secondary to tend to 0, restore the normal operating condition of transformer.
Above controller 8 can be the comparator being made of integrated transporting discharging, can also be the monolithic with simple comparing function
Machine, as long as basic comparison and break-make control function can be completed, therefore this will not be repeated here.Above-mentioned current sensing means 7
The electric current for wanting can to detect ac circuit, does not limit its concrete structure.
Impedance regulating can also select in addition to using the form of primary coil 3 and secondary coil 5 in above-described embodiment
It can also be reached by the adjusting of REgulatable reactor direct impedance value with REgulatable reactor and change 2 circuit of transformer high-voltage winding
The purpose of impedance.
The value of above-mentioned L can be adjusted according to the The concrete specification of transformer with application.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation.But it is every without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real
Any simple modification, equivalent variations and remodeling, still fall within the guarantor of technical solutions of the utility model made by confrontation above example
Protect range.
Claims (6)
1. a kind of self-protected amorphous alloy transformer, including magnetic core, magnetic core is equipped with high-voltage winding, it is characterised in that：Further include
Controller and current sensing means, impedance regulating is in series in the high-voltage winding, and current sensing means detects high voltage winding
Electric current in group circuit, the impedance that controller changes impedance regulating according to the detection information that current sensing means provides are big
It is small.
2. self-protected amorphous alloy transformer according to claim 1, it is characterised in that：The impedance regulating includes
Closed loop yoke is wound with primary coil and secondary coil in closed loop yoke, and primary coil is connected in the circuit of high-voltage winding, secondary
Resistance adjustment branch is set in the circuit of grade coil.
3. self-protected amorphous alloy transformer according to claim 2, it is characterised in that：It is set in the resistance adjustment branch
Set shorting stub and high impedance branch line, one end of shorting stub and high impedance branch line is connected in parallel on one end of secondary coil, the other end
The other end of secondary coil is connected by gated end.
4. self-protected amorphous alloy transformer according to claim 3, it is characterised in that：Controller controls the company of gated end
Connect state.
5. self-protected amorphous alloy transformer according to any one of claims 1 to 4, it is characterised in that：The controller is also
Display is connected, display shows the detected value of current sensing means.
6. self-protected amorphous alloy transformer according to claim 5, it is characterised in that：The controller also calculating current
Ratio between the detected value of detection device and given load current value, display show ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721840955.3U CN207705015U (en) | 2017-12-26 | 2017-12-26 | A kind of self-protected amorphous alloy transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721840955.3U CN207705015U (en) | 2017-12-26 | 2017-12-26 | A kind of self-protected amorphous alloy transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207705015U true CN207705015U (en) | 2018-08-07 |
Family
ID=63028582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721840955.3U Active CN207705015U (en) | 2017-12-26 | 2017-12-26 | A kind of self-protected amorphous alloy transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207705015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910173A (en) * | 2017-12-26 | 2018-04-13 | 山东计保电气有限公司 | The self-reparability guard method of amorphous alloy transformer and self-protected amorphous alloy transformer |
-
2017
- 2017-12-26 CN CN201721840955.3U patent/CN207705015U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910173A (en) * | 2017-12-26 | 2018-04-13 | 山东计保电气有限公司 | The self-reparability guard method of amorphous alloy transformer and self-protected amorphous alloy transformer |
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