CN208507421U - A kind of grounding transformer with sub-coil - Google Patents
A kind of grounding transformer with sub-coil Download PDFInfo
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- CN208507421U CN208507421U CN201821123603.0U CN201821123603U CN208507421U CN 208507421 U CN208507421 U CN 208507421U CN 201821123603 U CN201821123603 U CN 201821123603U CN 208507421 U CN208507421 U CN 208507421U
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- regulating switch
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- grounding transformer
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Abstract
The utility model discloses a kind of grounding transformers with sub-coil, belong to Relay Protection Technology in Power System field.A kind of grounding transformer with sub-coil, including iron core column and the coil group for being around in iron core column, coil group includes several sub-coils with connecting terminal, and a regulating switch is arranged between every two sub-coil；Two sub-coils respectively have a connecting terminal with can change connect between two sub-coils and the regulating switch of parallel relationship connect；The structure of three coil groups of grounding transformer is identical.The utility model can be a kind of grounding transformer of enough regulating switch no-load loss, have the characteristics that structure is simple, easy to produce, regulating switch range is big, after being applied to ground connection change and blowout coil set apparatus, the whole no-load loss that can effectively reduce ground connection change and blowout coil set apparatus, reaches energy-efficient purpose.
Description
Technical field
The utility model discloses a kind of grounding transformers with sub-coil, are particularly suitable for ground connection change and arc suppression coil
Complexes belong to Relay Protection Technology in Power System field.
Background technique
As country steps up product efficiency grade, height loss low-energy-efficiency transformer is gradually eliminated, energy-saving and emission-reduction,
Develop high energy efficiency transformer and has become industrial trend.Blowout coil set apparatus is that single-phase earthing occurs for compensating electric system
The capacity current generated when failure, avoids fault spread.With the development of modern science and technology, arc suppression coil complete compensator exists
Using more and more extensive in China's distribution, consequent is that grounding transformer application amount improves year by year；Market competition in recent years
More become fierce, how to reduce product energy consumption under the premise of reasonable control cost to improve product competitiveness, be that each company must not
The problem not faced.
Grounding transformer is in idle running state in the earth-free situation of system, only when single-phase earthing occurs for system
Short-time overload operation.At this stage, the every phase of grounding transformer is inside and outside two coils, and winding protruding head is drawn through connecting terminal, is led to
It crosses outside lead connection and realizes indentation wiring.In the complete earthing or grounding means of arc suppression coil, the variation of later period network load is considered,
All there are certain nargin when arc suppression coil capacity is chosen, arc suppression coil operational taps are adjusted with system capacitive current variation
Section switch, and grounding transformer is since capacity is fixed, no-load loss is nominal loss always, and arc suppression coil is run in low-grade location
When, there is the phenomenon that large capacity band low capacity, causes the waste of electric energy.
Utility model content
The utility model technical issues that need to address are to provide a kind of grounding transformer with sub-coil, pass through change
Series connection and relationship in parallel between sub-coil reach energy-efficient purpose.
In order to solve the above technical problems, the technical scheme adopted by the utility model is:
A kind of grounding transformer with sub-coil, including iron core column and the coil group for being around in iron core column, coil group includes
A regulating switch is arranged between every two sub-coil for several sub-coils with connecting terminal；Two sub-coils respectively have one
Connecting terminal with can change connect between two sub-coils and the regulating switch of parallel relationship connect；Three of grounding transformer
The structure of coil group is identical.
The utility model technology above scheme further improvement lies in that: coil group includes two points with connecting terminal
Coil.
The utility model technology above scheme further improvement lies in that: regulating switch be arranged three, each coil component
Regulating switch is not connected with it；The regulating switch include two step switch, two step switch one end respectively with same point
The connecting terminal connection other end at the both ends of coil is by changing and another sub-coil difference connecting terminal connection relationship tune
Save the motion end connected between two sub-coils with parallel relationship；The regulating switch linkage action of three coil groups.
The utility model technology above scheme further improvement lies in that: regulating switch be arranged one；The regulating switch
Including two step switch, two step switch one end connect the other end with the connecting terminal at the both ends of the same sub-coil respectively
For by changing and another sub-coil difference connecting terminal connection relationship is adjusted and connected and parallel relationship between two sub-coils
Motion end；The sub-coil of three coil groups and the connection relationship of regulating switch are identical.
The utility model technology above scheme further improvement lies in that: the number of turns of two sub-coils of the same coil group
It is identical.
By adopting the above-described technical solution, the technological progress that the utility model obtains is:
The utility model is by replacing with the coil with identical connecting structure for electrical equipment for the normal coil of grounding transformer
Group, each sub-coil can switch connection relationship by switch block in coil group, to switch the total number of turns of the coil group, total
The electric properties such as impedance, total magnetic flux；Switch block has linkage function, and the electric property that can uniformly switch each coil group is realized
The capacity of regulating switch grounding transformer entirety, to reduce grounding transformer no-load loss.
The utility model has the characteristics that structure is simple, easy to produce, regulating switch range is big, it is easy to operate to adjust,
After ground connection change and blowout coil set apparatus, the entirety that can effectively reduce ground connection change and blowout coil set apparatus is unloaded
Loss, reaches energy-efficient purpose.
Detailed description of the invention
Schematic diagram when Fig. 1 is sub-coil series connection above and below the utility model single coil group；
Schematic diagram when Fig. 2 is sub-coil parallel connection above and below the utility model single coil group；
Wherein, 1, sub-coil, 2, regulating switch, 3, connecting terminal.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described in further details the utility model:
The utility model relates to a kind of grounding transformers with sub-coil, apply in power grid.Grounding transformer application
In in the electric system of neutral point insulation, for providing an artificial neutral point, in through grounding through arc complexes
It is used cooperatively with arc suppression coil.Here is specific embodiment:
The grounding transformer with sub-coil in the utility model, including iron core column and the coil group for being around in iron core column,
The structure for the coil group with sub-coil is arranged in coil in the grounding transformer.
As shown in Figure 1 and Figure 2, coil group includes several sub-coils 1 with connecting terminal 3, every two sub-coil 1 it
Between be arranged a regulating switch 2；Two sub-coils 1 respectively have a connecting terminal 3 to be connected between two sub-coils 1 with can change
It is connected with the regulating switch 2 of parallel relationship；The structure of three coil groups of grounding transformer is identical.Fig. 1, Fig. 2 illustrate that tool
There are two the structure types of the coil group of sub-coil 1, and in specifically implementing, there are two divide for the preferential tool that sets coil group to
The structure of coil 1.Fig. 1, Fig. 2 illustrate that the structure of a coil group, and the structure of remaining two coil group is same.
Fig. 1 is schematic diagram when upper and lower sub-coil is connected, schematic diagram when Fig. 2 is upper and lower sub-coil parallel connection.Fig. 1, Fig. 2 are illustrated that
The case where single coil group, grounding transformer have 3 coil groups, and the wiring condition of 3 coil groups is identical.Fig. 1 and Fig. 2 are main
What is indicated is the schematic diagram of ground voltage device coiler part.
Regulating switch 2 in the utility model is specific as follows there are two types of the mode being arranged:
Regulating switch 2 can be set to three, and each coil group is connect with respective regulating switch 2 respectively, three coils
2 linkage action of regulating switch of group.Common, regulating switch 2 includes two step switch, and two step switch one end are solid respectively
Surely be connected on two connecting terminals of the same sub-coil 1, the other end is motion end, the motion end of step switch by with it is another
The different connection types of the connecting terminal 3 of one sub-coil 1 change the series-parallel relationship of two sub-coils.Under the set-up mode
Three 2 linkage actions of regulating switch.
Regulating switch 2 can also be arranged one.Under this kind of connection structure, regulating switch 2 include two step switch, two
Step switch one end is connected on the connecting terminal 3 at the both ends of the same sub-coil 1, and the other end is motion end, step switch
Motion end is by changing the series-parallel pass of two sub-coils from the different connection types of the connecting terminal 3 of another sub-coil 1
System.It, can be unified with movement by the connecting terminal 3 at one of 1 both ends of sub-coil of each coil group under this kind of connection structure
The binding post of switch is fixedly connected, and the motion end of step switch is arranged two binding posts and connects with the both ends of another sub-coil 1
Line terminals are connected by conducting wire.The sub-coil 1 of three coil groups is identical as the connection relationship of regulating switch 2.
Preferentially, the number of turns of two sub-coils 1 of the same coil group is identical, is changing the string of two sub-coils simultaneously in this way
After connection relationship, the power of control grounding transformer can be facilitated.
The utility model by the way that each coil group is divided into upper and lower two sub-coils, by change two sub-coils string,
Parallel way achievees the purpose that regulated ground transformer noload losses, and for arc suppression coil in low-grade location, capacity is less than ground connection transformation
When the half operation of device rated capacity, winding can be adjusted to series system, at this moment the magnetic flux density of iron core reduces by 50%；With normal
Design grounding transformer magnetic flux density 1.6T, silicon steel sheet model 30Q130 are advised to calculate, magnetic flux density reduces by 50%, iron-loss per unit weight
About 75% is reduced, corresponding no-load loss reduces about 75%, considerably reduces no-load loss, reduces energy waste.
The utility model can be a kind of grounding transformer of enough regulating switch no-load loss, have structure it is simple, convenient for life
Produce, the features such as regulating switch range is big, easy to adjust, be applied to ground connection become and blowout coil set apparatus after, can effectively drop
Low ground connection becomes and the whole no-load loss of blowout coil set apparatus, reaches energy-efficient purpose.
Claims (5)
1. a kind of grounding transformer with sub-coil, including iron core column and the coil group for being around in iron core column, it is characterised in that: line
Circle group includes several sub-coils (1) with connecting terminal (3), and a regulating switch is arranged between every two sub-coil (1)
(2)；Two sub-coils (1) respectively have a connecting terminal (3) to connect between two sub-coils (1) and parallel relationship with can change
Regulating switch (2) connection；The structure of three coil groups of grounding transformer is identical.
2. a kind of grounding transformer with sub-coil according to claim 1, it is characterised in that: coil group includes having
Two sub-coils (1) of connecting terminal (3).
3. a kind of grounding transformer with sub-coil according to claim 2, it is characterised in that: regulating switch (2) is set
Three are set, each coil group is connected separately with regulating switch (2)；The regulating switch (2) includes two step switch, and two dynamic
Make switch one end connect respectively with the connecting terminal (3) at the both ends of the same sub-coil (1) other end be by change with it is another
Different connecting terminal (3) connection relationships of a sub-coil (1) adjust the movement of series connection and parallel relationship between two sub-coils (1)
End；Regulating switch (2) linkage action of three coil groups.
4. a kind of grounding transformer with sub-coil according to claim 2, it is characterised in that: regulating switch (2) is set
Set one；The regulating switch (2) include two step switch, two step switch one end respectively with the same sub-coil (1)
Connecting terminal (3) the connection other end at both ends be to pass through to change different from another sub-coil (1) connecting terminals (3) and connect pass
System adjusts the motion end of series connection and parallel relationship between two sub-coils (1)；The sub-coil (1) and regulating switch of three coil groups
(2) connection relationship is identical.
5. a kind of grounding transformer with sub-coil according to any one of claims 1 to 4, it is characterised in that: same
The number of turns of two sub-coils (1) of a coil group is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821123603.0U CN208507421U (en) | 2018-07-16 | 2018-07-16 | A kind of grounding transformer with sub-coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821123603.0U CN208507421U (en) | 2018-07-16 | 2018-07-16 | A kind of grounding transformer with sub-coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208507421U true CN208507421U (en) | 2019-02-15 |
Family
ID=65289396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821123603.0U Active CN208507421U (en) | 2018-07-16 | 2018-07-16 | A kind of grounding transformer with sub-coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208507421U (en) |
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2018
- 2018-07-16 CN CN201821123603.0U patent/CN208507421U/en active Active
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