CN218123165U - Voltage regulating transformer winding system and transformer - Google Patents
Voltage regulating transformer winding system and transformer Download PDFInfo
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- CN218123165U CN218123165U CN202222446672.8U CN202222446672U CN218123165U CN 218123165 U CN218123165 U CN 218123165U CN 202222446672 U CN202222446672 U CN 202222446672U CN 218123165 U CN218123165 U CN 218123165U
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Abstract
The utility model relates to a regulating transformer winding system and transformer. The main winding comprises a plurality of sub-windings, the voltage regulating winding comprises a plurality of taps, each tap corresponds to one voltage regulating gear of the voltage regulating winding, the non-excitation switch comprises a movable contact, a first fixed contact, a second fixed contact and a third fixed contact, when the movable contact is connected with one of the first fixed contact, the second fixed contact and the third fixed contact, the non-excitation switch is connected with different sub-windings of the plurality of sub-windings, and the connected sub-windings are connected with the taps of the voltage regulating winding through the on-load switch. The regulating transformer winding system can solve the problem that the regulating gears and the regulating range of a single transformer cannot meet the requirements of users or the market, and can realize the effect of increasing the regulating gears to enlarge the regulating range under the condition of not adding a plurality of additional transformers, namely, the regulating function of three transformers is realized through one transformer.
Description
Technical Field
The utility model relates to a transformer technical field, concretely relates to regulating transformer winding system and transformer.
Background
A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction. The voltage regulation of the transformer is realized by adjusting and connecting a tap of a winding (generally a high-voltage winding) on one side of the transformer through a tap changer (tap switch) to change the number of turns of the winding, thereby achieving the purpose of changing output voltage.
The transformer tap changer is divided into a transformer non-excitation switch and a transformer on-load switch, the transformer voltage regulation modes are non-excitation voltage regulation and on-load voltage regulation, the on-load voltage regulation utilizes the on-load switch to change a tap joint of a transformer winding under the condition of ensuring that the load current is not cut off to carry out voltage regulation, and the on-load voltage regulation mode is generally used for transformers which have strict voltage requirements and need frequent gear shifting.
The maximum voltage regulating gear which can be realized by matching a main winding of the existing transformer with an on-load switch of the transformer and an independent voltage regulating winding is 35 gears.
However, in an application place where more voltage regulating gears are realized without adding a plurality of transformers, thereby realizing a larger voltage regulating range, the current voltage regulating gears cannot meet the requirements of users or markets.
Therefore, there is a strong need for an improved transformer to achieve more voltage regulation steps and thus a larger voltage regulation range without the need for additional transformers.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a regulating transformer is around group system and transformer to at least, solve the problem that single transformer gear and pressure regulating scope can't satisfy user or market demand among the prior art.
According to an aspect of the embodiment of the utility model, a regulating transformer winding system is provided, regulating transformer winding system includes the main part winding, the voltage regulating winding, no excitation switch and on-load switch, wherein, the main part winding includes a plurality of subwindings, the voltage regulating winding includes a plurality of taps, every tap is corresponding to a voltage regulating gear of voltage regulating winding, and no excitation switch includes the moving contact, first static contact, second static contact and third static contact, when no excitation switch is connected in moving contact and first static contact, one in second static contact and the third static contact, connect different subwinding among the plurality of subwindings, and the subwinding that will connect is connected through taking a percentage of on-load switch and voltage regulating winding.
In this way, the utility model discloses thereby the tap that the regulating transformer winding system of embodiment is connected through having different subwindings in a plurality of subwindings of excitation switch connection main part winding and through having load switch and regulating winding can realize increasing the effect of regulating voltage gear extension pressure regulating range under the condition that need not additional many transformers.
According to the exemplary embodiment of the present invention, a plurality of sub-windings include first sub-winding, second sub-winding and third sub-winding, and the sub-winding that does not have the excitation switch to connect the difference in a plurality of sub-windings includes: the non-excitation switch is connected with the first sub-winding, the second sub-winding and the third sub-winding in series, and the non-excitation switch is connected with the first sub-winding and the third sub-winding in series, or the non-excitation switch is connected with the first sub-winding.
In this way, the utility model discloses regulating transformer winding system is through dividing the main part winding into three sub-winding to connect the different sub-winding in the three sub-winding through no excitation switch, can realize 3 kinds of different voltage operating modes to the main part winding.
According to the utility model discloses an exemplary embodiment, the one end of first subwinding is passed through the circuit of bushing electricity grid, and the moving contact is connected to the other end, and first static contact is connected to the one end of second subwinding, and the one end of third subwinding is connected to the other end of second subwinding to the second static contact is connected between the other end of second subwinding and the one end of third subwinding, and the third static contact is connected to the other end of third subwinding.
In this way, the utility model discloses regulating transformer winding system of embodiment connects different subwinding among a plurality of subwinding through the concrete arrangement of moving contact and three static contact.
According to an exemplary embodiment of the present invention, the voltage regulating winding has 19 taps.
In this way, in the utility model discloses among the regulating transformer winding system, the regulating winding can realize 35 kinds of different voltage operating modes through these 19 taps.
According to the utility model discloses on the other hand of the embodiment provides a transformer, and the transformer includes: the voltage regulating transformer winding system comprises a main winding, a voltage regulating winding, a non-excitation switch and an on-load switch, wherein the main winding comprises a plurality of sub-windings, the voltage regulating winding comprises a plurality of taps, each tap corresponds to one voltage regulating gear of the voltage regulating winding, the non-excitation switch comprises a movable contact, a first fixed contact, a second fixed contact and a third fixed contact, and when the movable contact is connected with one of the first fixed contact, the second fixed contact and the third fixed contact, the non-excitation switch is connected with different sub-windings of the plurality of sub-windings and connects the connected sub-windings with the taps of the voltage regulating winding through the on-load switch; and the main winding and the voltage regulating winding of the voltage regulating transformer winding system are wound on the iron core.
In this way, the utility model discloses thereby the transformer can realize increasing the effect that the pressure regulating gear enlarges the pressure regulating scope under the condition that need not additional many transformers through the different subwindings in the a plurality of subwindings of no excitation switch connection main part winding and through having the tap of load switch and voltage regulating winding and be connected.
According to the exemplary embodiment of the present invention, the transformer further includes a first winding and a second winding, wherein the second winding receives an alternating voltage from a circuit of the power grid, the first winding and the main body winding are connected to the electric device to supply power to the electric device, the voltage of the second winding is greater than the voltage of the main body winding, the voltage of the main body winding is greater than the voltage of the first winding, wherein the winding on the iron core sequentially includes the first winding, the second winding, the main body winding and the voltage regulating winding from inside to outside.
In this way, in the transformer of the embodiment of the present invention, through this winding arrangement, the short-circuit impedance requirement value between the different winding pairs of the transformer can be satisfied.
According to an exemplary embodiment of the present invention, the transformer is a three-phase transformer having three phases, each phase comprising one core and one regulating transformer winding system.
In this way, the transformer of the embodiment of the present invention may be a three-phase transformer.
According to an exemplary embodiment of the present invention, the transformer is a single-phase transformer.
In this way, the transformer of the embodiments of the present invention may be a single-phase transformer.
According to the exemplary embodiment of the present invention, a plurality of sub-windings include first sub-winding, second sub-winding and third sub-winding, and the sub-winding that does not have the excitation switch to connect the difference in a plurality of sub-windings includes: the non-excitation switch is connected with the first sub-winding, the second sub-winding and the third sub-winding in series, and the non-excitation switch is connected with the first sub-winding and the third sub-winding in series, or the non-excitation switch is connected with the first sub-winding.
In this way, the utility model discloses the transformer is through dividing the main part winding into three sub-winding to connect the different sub-winding in the three sub-winding through no excitation switch, can realize 3 kinds of different voltage operating modes to the main part winding.
According to the utility model discloses an exemplary embodiment, the circuit of bushing electric wire netting is passed through to the one end of first subwinding, and the moving contact is connected to the other end, and first static contact is connected to the one end of second subwinding, and the one end of third subwinding is connected to the other end of second subwinding to the second static contact is connected between the other end of second subwinding and the one end of third subwinding, and the third static contact is connected to the other end of third subwinding.
In this way, the utility model discloses transformer passes through the concrete arrangement of moving contact and three static contact, connects different subwindings in a plurality of subwindings.
According to an exemplary embodiment of the present invention, the voltage regulating winding has 19 taps.
In this way, in the transformer of the embodiment of the utility model, the voltage regulating winding can realize 35 different voltage operating modes through these 19 taps.
The embodiment of the utility model provides an in the embodiment, thereby provide tap changer winding system and transformer, thereby it can be connected to the tap changer that has a plurality of taps and then increases the technical scheme that the pressure regulating range was enlarged to the voltage regulating winding that has a plurality of taps through making the main part winding fall into a plurality of subwindings and combination no excitation switch and on-load switch, thereby solve the technical problem that the pressure regulating gear and the voltage regulating range of current single transformer can't satisfy user or market demand at least, thereby realized increasing the technical effect that the voltage regulating gear enlarges the voltage regulating range under the condition that need not additional many transformers.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
FIG. 1 is a schematic block diagram showing a regulating transformer winding system;
FIG. 2 is a schematic block diagram showing a transformer employing a regulating transformer winding system;
fig. 3 is a schematic winding arrangement showing that a transformer employing a regulating transformer winding system meets short circuit impedance requirements for different winding pairs.
List of reference numbers:
1: a transformer;
2: a winding arrangement;
10: an iron core;
20: a voltage regulating transformer winding system;
200: a main winding;
210: a voltage regulating winding;
220: no excitation switch;
230: on-load switch
240: a first winding;
250: a second winding;
2001: a first sub-winding;
2002: a second sub-winding;
2003: a third sub-winding;
2004: a moving contact;
2005: a first fixed contact;
2006: a second fixed contact;
2007: a third static contact;
2301: a switch;
2302: and a selection switch.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the embodiments of the present invention. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, portions irrelevant to the description of the present invention will be omitted for clarity. Like reference numerals refer to like elements throughout the description. Further, in providing the description with reference to the drawings, although the elements are denoted by the same numerals, the reference numerals related to the elements may be changed and the reference numerals are described only for convenience of description, and it should not be understood that the concept, features, functions or effects of the elements are limited by the reference numerals.
According to an aspect of the embodiment of the utility model, a regulating transformer winding system is provided, regulating transformer winding system includes the main part winding, the regulating winding, no excitation switch and on-load switch, wherein, the main part winding includes a plurality of subwindings, the regulating winding includes a plurality of taps, every tap corresponds to a voltage regulation gear of regulating winding, and no excitation switch includes the moving contact, first static contact, second static contact and third static contact, no excitation switch is when moving contact and first static contact, when one in second static contact and the third static contact is connected, connect different subwinding among the plurality of subwinding, the subwinding that will connect is connected through taking a percentage with the regulating winding on-load switch and is connected.
According to the exemplary embodiment of the present invention, a plurality of sub-windings include first sub-winding, second sub-winding and third sub-winding, and the sub-winding that does not have the excitation switch to connect the difference in a plurality of sub-windings includes: the non-excitation switch is connected with the first sub-winding, the second sub-winding and the third sub-winding in series, and the non-excitation switch is connected with the first sub-winding and the third sub-winding in series, or the non-excitation switch is connected with the first sub-winding.
According to the utility model discloses an exemplary embodiment, the one end of first subwinding is passed through the circuit of bushing electricity grid, and the moving contact is connected to the other end, and first static contact is connected to the one end of second subwinding, and the one end of third subwinding is connected to the other end of second subwinding to the second static contact is connected between the other end of second subwinding and the one end of third subwinding, and the third static contact is connected to the other end of third subwinding.
According to an exemplary embodiment of the present invention, the voltage regulating winding has 19 taps.
Fig. 1 is a schematic block diagram showing a regulating transformer winding system. As shown in fig. 1, the tap changer winding system 20 includes a main winding 200, a tap winding 210, a no-field switch 220, and a load switch 230.
Specifically, the body winding 200 includes a plurality of sub-windings, such as a first sub-winding 2001, a second sub-winding 2002, and a third sub-winding 2003. The first, second and third sub-windings 2001, 2002, 2003 may be separate, the number of separate sub-windings and the turn ratio of the multiple sub-windings depending on the requirements of the user or market for the winding system.
Specifically, the voltage regulating winding 210 has a plurality of taps in a tap extraction manner, each tap corresponds to one voltage regulating step of the voltage regulating winding 210, for example, the voltage regulating winding 210 has 19 taps corresponding to a positive pole, a negative pole and 17 voltage steps, and the number of taps can be changed according to actual use requirements.
In addition, the non-excited switch 220 has 1 moving contact and a plurality of fixed contacts, for example, in accordance with the number of 3 sub-windings, and the non-excited switch 220 has 1 moving contact and 3 fixed contacts, that is, a moving contact 2004, a first fixed contact 2005, a second fixed contact 2006, and a third fixed contact 2007. For example, one end of the first sub-winding 2001 is connected with the circuit through a bushing, the other end of the first sub-winding 2001 is connected with the movable contact 2004, one end of the second sub-winding 2002 is connected with the first fixed contact 2005, the other end of the second sub-winding 2002 is connected with one end of the third sub-winding 2003, the second fixed contact 2006 is connected between the other end of the second sub-winding 2002 and one end of the third sub-winding 2003, and the other end of the third sub-winding 2003 is connected with the third fixed contact 2007.
In addition, the on-load switch 230 includes a switch 2301 and a selection switch 2302, one end of the switch 2301 is fixedly connected to the 0 end point, the 0 end point is connected to the third stationary contact 2007 and the third sub-winding 2003, and the other end is movably connected to different taps of the voltage regulating winding 210. Selection switch 2302 selects different taps of the regulating winding 210 to select different voltage steps. This allows the on-load switch 230 to perform voltage regulation, i.e., to realize on-load voltage regulation, while ensuring that the current is not interrupted.
For example, when the movable contact 2004 of the non-excitation switch 220 is connected with the first fixed contact 2005, the first sub-winding 2001, the second sub-winding 2002 and the third sub-winding 2003 are connected in series, and the load switch 230 is connected with the voltage regulating winding 210, so that 35 voltage regulating steps are realized. When the moving contact 2004 of the off-circuit switch 220 is connected to the second fixed contact 2006, the first sub-winding 2001 and the third sub-winding 2003 are connected in series, and are connected to the voltage-regulating winding 210 through the on-load switch 230, thereby realizing 35 voltage-regulating gears. When the moving contact 2004 of the non-excitation switch 220 is connected to the third stationary contact 2007, the first sub-winding 2001 is connected, and 35 voltage-regulating gears are realized. Therefore, different parts of the separated sub-windings are connected in series through the connection of the moving contact of the non-excitation switch 220 and different fixed contacts, and the on-load switch 230 is connected to the voltage regulating winding 210 to realize various voltage regulating gears. In this example, a total of 3 × 35=105 pressure adjustment steps are implemented.
In this way, the utility model discloses a tap through having different subwindings among a plurality of subwindings of excitation switch connection main part winding and through having load switch and voltage regulating winding of tap and be connected of tap can realize increasing the effect that the pressure regulating gear enlarges the pressure regulating range under the condition that need not additional many transformers.
According to the utility model discloses an on the other hand provides a transformer, and the transformer includes: the voltage regulating transformer winding system comprises a main winding, a voltage regulating winding, a non-excitation switch and an on-load switch, wherein the main winding comprises a plurality of sub-windings, the voltage regulating winding comprises a plurality of taps, each tap corresponds to one voltage regulating gear of the voltage regulating winding, the non-excitation switch comprises a movable contact, a first fixed contact, a second fixed contact and a third fixed contact, when the movable contact is connected with one of the first fixed contact, the second fixed contact and the third fixed contact, the non-excitation switch is connected with different sub-windings of the plurality of sub-windings, and the connected sub-windings are connected with the taps of the voltage regulating winding through the on-load switch; and the main winding and the voltage regulating winding of the voltage regulating transformer winding system are wound on the iron core.
Fig. 2 is a schematic block diagram showing a transformer employing a regulating transformer winding system.
As shown in fig. 2, the transformer 1 includes an iron core 10 and a winding system 20 of a voltage regulating transformer, and the transformer 1 may further include other multiple windings, which is not limited in this example. The main winding 200 and the regulating winding 210 of the regulating transformer winding system 20 are wound on the iron core 10.
The transformer 1 with the regulating transformer winding system 20 can realize a plurality of regulating gears, for example, 3 × 35=105 regulating gears, and has a larger regulating range.
In this way, the utility model discloses thereby the transformer can realize increasing the effect that the pressure regulating gear enlarges the pressure regulating range under the condition that need not additional many transformers through not having the excitation switch to connect different subwindings in a plurality of subwindings of main part winding and through having tapping connection of load switch and voltage regulating winding.
According to an exemplary embodiment of the present invention, the transformer is a three-phase transformer having three phases, each phase comprising one core and one regulating transformer winding system.
According to an exemplary embodiment of the present invention, the transformer is a single-phase transformer.
The transformer 1 may be a three-phase transformer having three phases, each phase including an iron core 10 and a corresponding regulating transformer winding system 20. The transformer 1 may be a single-phase transformer.
In this way, the utility model discloses the transformer can be three-phase or single-phase transformer, is applied to multiple situation, and the range of application is wider.
According to the exemplary embodiment of the present invention, the transformer further includes a first winding and a second winding, wherein the second winding receives an alternating voltage from a circuit of the power grid, the first winding and the main winding are connected to the electric equipment to supply power to the electric equipment, a voltage of the second winding is greater than a voltage of the main winding, the voltage of the main winding is greater than a voltage of the first winding, and wherein the winding on the iron core sequentially includes the first winding, the second winding, the main winding and the voltage regulating winding from inside to outside.
Fig. 3 is a schematic winding arrangement showing that a transformer employing a regulating transformer winding system meets short circuit impedance requirements for different winding pairs.
As shown in fig. 3, the transformer 2 includes a core 10, a first winding 240, a second winding 250, and a regulating transformer winding system 20. The first winding 240, the second winding 250, and the main winding 200 and the voltage regulating winding 210 of the voltage regulating transformer winding system 20 are sequentially wound on the iron core 10 from inside to outside.
For example, the first winding 240 may be a low voltage winding, the second winding 250 may be a high voltage winding, and the main winding may be a medium voltage winding, and it is noted that low voltage, medium voltage, and high voltage are relative concepts, and the specific application thereof depends on the application of the transformer, for example, as a step-down transformer, a step-up transformer, and the like.
In a transformer, there is a short-circuit impedance between the winding pairs of each phase, which is an important item of performance index of the transformer. When the transformer runs in full load, the magnitude of the short-circuit impedance has certain influence on the magnitude of the secondary side output voltage. Therefore, the short-circuit impedance between the winding pairs of each phase is made to satisfy a predetermined ratio, which is advantageous for obtaining the intended transformer performance.
The short-circuit impedance mainly depends on the magnitude of the leakage reactance of the transformer, and the leakage distribution in the inner space of the transformer is related to parameters such as the space arrangement of the transformer winding, the number of winding turns, the geometric dimension of the winding and the like, namely different winding arrangements lead to different leakage distributions.
In the present example, for example, an arrangement of a core-low-voltage winding-high-voltage winding-main winding-voltage regulating winding is adopted, which causes a leakage flux distribution such that short-circuit impedance between the winding pair satisfies a predetermined ratio. For example, the winding arrangement is such that the high-medium short circuit impedance is 17.8%, the medium-low short circuit impedance is 65.2%, and the high-low short circuit impedance is 48.6%.
The transformer 2 applying the winding system 20 of the voltage regulating transformer and having the winding arrangement can not only enable the short-circuit impedance between the winding pairs to meet the predetermined proportion, but also can realize a plurality of voltage regulating gears, for example, 3 × 35=105 voltage regulating gears, and has a larger voltage regulating range, thereby enabling the transformer to meet the expected requirements of users or markets.
In this way, the utility model discloses a transformer not only can make every phase winding satisfy predetermined proportion relatively between the short-circuit impedance, can also realize multiple pressure regulating gear.
According to the exemplary embodiment of the present invention, a plurality of sub-windings include first sub-winding, second sub-winding and third sub-winding, and the sub-winding that does not have the excitation switch to connect the difference in a plurality of sub-windings includes: the non-excitation switch is connected with the first sub-winding, the second sub-winding and the third sub-winding in series, and the non-excitation switch is connected with the first sub-winding and the third sub-winding in series, or the non-excitation switch is connected with the first sub-winding in series.
According to the utility model discloses an exemplary embodiment, the one end of first subwinding is passed through the circuit of bushing electricity grid, and the moving contact is connected to the other end, and first static contact is connected to the one end of second subwinding, and the one end of third subwinding is connected to the other end of second subwinding to the second static contact is connected between the other end of second subwinding and the one end of third subwinding, and the third static contact is connected to the other end of third subwinding.
In this way, the utility model discloses regulating transformer winding system of embodiment selects different subwindings in a plurality of subwindings through the concrete arrangement of moving contact and three static contact.
In this way, the utility model discloses the transformer is through dividing the main part winding into three sub-winding to connect the different sub-winding in the three sub-winding through no excitation switch, can realize 3 kinds of different voltage operating modes to the main part winding.
According to an exemplary embodiment of the present invention, the voltage regulating winding has 19 taps.
In this way, the utility model discloses a voltage regulation winding of transformer can realize 35 kinds of different voltage operating modes through these 19 taps.
The embodiment of the utility model provides an in, thereby provide regulating transformer winding system and transformer, thereby it can be connected to the regulating winding that has a plurality of taps and then increases the technical scheme that the pressure regulating gear enlarges the pressure regulating range through making main part winding fall into a plurality of sub-windings and combining not have excitation switch and on-load switch, thereby the technical problem of user or market demand can't be satisfied with the pressure regulating gear and the pressure regulating range of solving current single transformer at least, thereby realized increasing the technological effect that the pressure regulating gear enlarges the pressure regulating range under the condition that need not to attach many transformers.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed technical content can be implemented in other ways.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (11)
1. A tap transformer winding system (20), said tap transformer winding system (20) comprising a main winding (200), a tap winding (210), a no-field switch (220), and a load switch (230), wherein,
the main body winding (200) comprises a plurality of sub-windings,
the regulating winding (210) includes a plurality of taps, each tap corresponding to a tap position of the regulating winding (210), an
The off-circuit switch (220) comprises a moving contact (2004), a first fixed contact (2005), a second fixed contact (2006) and a third fixed contact (2007), and when the moving contact (2004) is connected with one of the first fixed contact (2005), the second fixed contact (2006) and the third fixed contact (2007), the off-circuit switch (220) is connected with different sub-windings in the plurality of sub-windings and connects the connected sub-windings with the tap of the voltage regulating winding (210) through the on-load switch (230).
2. The powerstat winding system (20) of claim 1 wherein said plurality of sub-windings comprises a first sub-winding (2001), a second sub-winding (2002), and a third sub-winding (2003), and wherein said de-energizing switch (220) connects different ones of said plurality of sub-windings comprises:
the non-excited switch (220) connects the first sub-winding (2001), the second sub-winding (2002), and the third sub-winding (2003) in series,
the non-exciting switch (220) connects the first sub-winding (2001) and the third sub-winding (2003) in series, or
The non-excitation switch (220) is connected with the first sub-winding (2001).
3. The powerstat winding system (20) according to claim 2, wherein one end of the first sub-winding (2001) is connected to a circuit of a power grid through a bushing, the other end of the first sub-winding is connected to the movable contact (2004), one end of the second sub-winding (2002) is connected to the first fixed contact (2005), the other end of the second sub-winding (2002) is connected to one end of the third sub-winding (2003), the second fixed contact (2006) is connected between the other end of the second sub-winding (2002) and one end of the third sub-winding (2003), and the other end of the third sub-winding (2003) is connected to the third fixed contact (2007).
4. The powerstat winding system (20) of claim 3 wherein said powerstat winding (210) has 19 taps.
5. A transformer (1), characterized in that the transformer (1) comprises:
a tap changer winding system (20), the tap changer winding system (20) comprising a main winding (200), a tap winding (210), a no-excitation switch (220), and a load switch (230),
the main body winding (200) comprises a plurality of sub-windings,
the regulating winding (210) includes a plurality of taps, each tap corresponding to a tap position of the regulating winding (210), an
The non-excitation switch (220) comprises a movable contact (2004), a first fixed contact (2005), a second fixed contact (2006) and a third fixed contact (2007), when the movable contact (2004) is connected with one of the first fixed contact (2005), the second fixed contact (2006) and the third fixed contact (2007), the non-excitation switch (220) is connected with different sub-windings in the plurality of sub-windings, and the connected sub-windings are connected with the tap of the voltage regulating winding (210) through the on-load switch (230), and
an iron core (10) in which,
the main winding (200) and the regulating winding (210) of the regulating transformer winding system (20) are wound on the iron core (10).
6. Transformer (1) according to claim 5, characterized in that the transformer (1) further comprises a first winding (240) and a second winding (250), wherein the second winding receives an alternating voltage from a circuit of an electrical network, the first winding and the body winding are connected to a consumer for supplying power to the consumer, the voltage of the second winding is larger than the voltage of the body winding, the voltage of the body winding is larger than the voltage of the first winding,
the winding on the iron core (10) sequentially comprises the first winding, the second winding, the main winding (200) and the voltage regulating winding (210) from inside to outside.
7. Transformer (1) according to claim 5 or 6, characterized in that the transformer (1) is a three-phase transformer having three phases, each phase comprising one said core (10) and one said regulating transformer winding system (20).
8. Transformer (1) according to claim 5 or 6, characterized in that the transformer (1) is a single-phase transformer.
9. The transformer (1) of claim 5, wherein the plurality of sub-windings comprises a first sub-winding (2001), a second sub-winding (2002), and a third sub-winding (2003), and wherein the de-energizing switch (220) connecting different ones of the plurality of sub-windings comprises:
the non-exciting switch (220) connects the first sub-winding (2001), the second sub-winding (2002) and the third sub-winding (2003) in series,
the non-excited switch (220) connects the first sub-winding (2001) and the third sub-winding (2003) in series, or
The non-excitation switch (220) is connected with the first sub-winding (2001).
10. The transformer (1) according to claim 9, wherein one end of the first sub-winding (2001) is connected to a circuit of a power grid through a bushing, the other end is connected to the movable contact (2004), one end of the second sub-winding (2002) is connected to the first fixed contact (2005), the other end of the second sub-winding (2002) is connected to one end of the third sub-winding (2003), the second fixed contact (2006) is connected between the other end of the second sub-winding (2002) and one end of the third sub-winding (2003), and the other end of the third sub-winding (2003) is connected to the third fixed contact (2007).
11. The transformer (1) of claim 10, wherein the regulating winding (210) has 19 taps.
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| CN202222446672.8U CN218123165U (en) | 2022-09-15 | 2022-09-15 | Voltage regulating transformer winding system and transformer |
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| CN202222446672.8U CN218123165U (en) | 2022-09-15 | 2022-09-15 | Voltage regulating transformer winding system and transformer |
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2022
- 2022-09-15 CN CN202222446672.8U patent/CN218123165U/en active Active
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Address after: 510000 No. 26, Jungong Road, East District, Guangzhou Economic and Technological Development Zone, Guangdong Province Patentee after: Guangzhou Siemens Energy Transformer Co.,Ltd. Address before: 510000 No. 26, Jungong Road, East District, Guangzhou Economic and Technological Development Zone, Guangdong Province Patentee before: SIEMENS TRANSFORMER (GUANGZHOU) Co.,Ltd. |