Adjustable transformer with on-load tap changer

Abstract

The utility model relates to a kind of adjustable transformers with on-load tap changer, the adjustable transformer has shell and active component arranged in the inside of the shell, the on-load tap changer has respectively for each phase: one selector substrate and one on-load switcher substrate, or one selector substrate, one preselector substrate and one on-load switcher substrate, wherein, selector is equipped on each selector substrate, preselector is equipped on each preselector substrate, and on-load switcher is equipped on each on-load switcher substrate;The on-load tap changer is arranged in the inside of the shell of the adjustable transformer side or above or below the active component. Thus, the on-load tap changer of the adjustable transformer can be installed in adjustable transformer in simple and space-saving manner.

Description

Technical Field

[0001] This utility model relates to an adjustable transformer, and more particularly to an adjustable transformer with an on-load tap changer, wherein the on-load tap changer is used to perform uninterrupted load switching between different windings of the adjustable transformer. Background Technology

[0002] In power transmission and distribution systems, adjustable transformers, as core power equipment, bear the crucial task of adjusting the output voltage in real time according to changes in grid load and voltage fluctuations. Their operational stability directly determines the quality and safety of the power grid. Adjustable transformers primarily achieve voltage regulation by changing the turns ratio of their windings, and in this process, on-load tap changers (OLTCs) play an indispensable role. OLTCs can switch between different winding taps of the adjustable transformer while it is operating under load, ensuring continuous and uninterrupted voltage regulation. This avoids the impact of power outages on industrial production and residential life, and they are widely used in transmission lines, substations, and large industrial enterprises.

[0003] On-load tap changers typically include a selector, an on-load switch, and an optional preselector. The selector is responsible for pre-selecting the target tap position, while the on-load switch is responsible for transferring current and switching taps under load.

[0004] With the development of adjustable transformers towards higher integration, how to achieve the installation of on-load tap changers within transformers in a simple and compact manner has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The objective of this invention is to provide an adjustable transformer with an on-load tap changer, wherein the on-load tap changer of the adjustable transformer can be installed in the adjustable transformer in a simple and space-saving manner.

[0006] This task is solved using an adjustable transformer with an on-load tap changer according to the present invention.

[0007] This application proposes an adjustable transformer with an on-load tap changer, wherein the adjustable transformer has a housing and an active component disposed inside the housing, and the on-load tap changer has, for each phase, a selector substrate and an on-load switch substrate, or a selector substrate, a preselector substrate and an on-load switch substrate, wherein each selector substrate has a selector, each preselector substrate has a preselector, and each on-load switch substrate has an on-load switch; the on-load tap changer is disposed inside the housing of the adjustable transformer next to, above or below the active component.

[0008] In some embodiments, the adjustable transformer is configured as a three-phase adjustable transformer, wherein the on-load tap changer has three selector substrates and three on-load switch substrates corresponding to the three phases, or three selector substrates, three preselector substrates, and three on-load switch substrates.

[0009] In some embodiments, all selector substrates and all on-load switch substrates and / or all preselector substrates of the on-load tap changer are mechanically interconnected via brackets, and the on-load tap changer is configured with a common drive shaft capable of driving all selectors and all on-load switches and / or all preselectors.

[0010] In some embodiments, all selector substrates and all on-load switch substrates and / or all preselector substrates of the on-load tap changer are arranged horizontally or vertically in different planes.

[0011] In some embodiments, all selector substrates and all on-load switch substrates and / or all preselector substrates of the on-load tap changer are arranged in a multi-planar arrangement extending along a first direction, and the corresponding main surfaces are oriented along the first direction.

[0012] In some embodiments, all selector substrates and all on-load switch substrates and / or all preselector substrates of the on-load tap changer are arranged horizontally or vertically in a common plane.

[0013] In some embodiments, all selector substrates and all on-load switch substrates and / or all preselector substrates of the on-load tap changer are arranged in a coplanar configuration extending along a first direction, and the corresponding main surfaces are oriented along a second direction orthogonal to the first direction.

[0014] In some embodiments, the first direction is a left-right direction, a up-down direction, or a front-back direction.

[0015] In some embodiments, the on-load tap changer is attached to the top, bottom, or side wall of the housing by means of a drive module and / or a bracket; and / or the on-load tap changer is attached to the top, bottom, or side of the active component by means of a drive module and / or a bracket.

[0016] In some embodiments, the drive module is at least partially disposed within or outside the housing of the adjustable transformer.

[0017] In some embodiments, a first selector arm, a second selector arm, and a selector fixing contact are mounted on the first main surface and the second main surface of each selector substrate.

[0018] In some embodiments, a vacuum switch tube, a current limiting element, and a bridge switch of the on-load switch are mounted on the first main surface and the second main surface of each on-load switch substrate.

[0019] In some embodiments, a first preselector arm, a second preselector, and a preselector fixing contact are mounted on a first main surface and a second main surface of each preselector substrate.

[0020] In some embodiments, a wall element is provided on the outer edge of each selector substrate, and a corresponding selector fixing contact is arranged on the wall element. Attached Figure Description

[0021] The present application will now be described in more detail with reference to the accompanying drawings and specific embodiments. The schematic drawings are briefly described below:

[0022] Figure 1 A schematic diagram of an on-load tap changer according to a preferred embodiment of this application is shown;

[0023] Figures 2 to 17 Schematic diagrams of different embodiments of an adjustable transformer with an on-load tap changer according to this application are shown. Detailed Implementation

[0024] The present application will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present application. However, it should be understood that the present application can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present application more complete and to fully illustrate the scope of protection of the present application to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0025] In the various embodiments described, the same reference numerals or element names are used for the same elements, and the disclosure contained throughout the specification can be applied semantically to elements with the same reference numerals or element names. Furthermore, in the various embodiments, the number, implementation, and / or arrangement of elements are not limited to the examples shown, but other numbers, implementations, and / or arrangements can be selected according to actual needs.

[0026] In this document, spatial relation terms such as "up," "down," "left," "right," "front," "back," "high," and "low" are used to describe the relationship between one feature and another in the accompanying drawings. It should be understood that spatial relation terms include not only the orientation shown in the drawings but also different orientations of the device during use or operation. For example, when the device in the drawings is inverted, a feature previously described as "below" other features can now be described as "above" other features. The device can also be oriented in other ways (rotated 90 degrees or in other orientations), in which case the relative spatial relationships will be interpreted accordingly.

[0027] In this document, the term “A or B” includes both “A and B” and “A or B”, rather than exclusively including only “A” or only “B”, unless otherwise specified.

[0028] In this document, the terms "illustrative" or "exemplary" mean "serving as an example, instance, or illustration." Any implementation described herein by example is not necessarily to be construed as preferred or advantageous over other implementations. Moreover, this application is not limited to any stated or implied theory given in the foregoing technical field, background art, utility model content, or specific embodiments.

[0029] In this document, the term “substantially” means any minor variation caused by defects in design or manufacturing, tolerances of devices or components, environmental influences and / or other factors.

[0030] Additionally, terms such as “first,” “second,” etc., may be used in this document for reference purposes only and are not intended to be limiting. For example, unless the context clearly indicates otherwise, the words “first,” “second,” and other such numerical terms relating to structures or elements do not imply order or sequence.

[0031] Some embodiments of this application will now be described in more detail with reference to the accompanying drawings.

[0032] Figure 1 A preferred embodiment of the on-load tap changer 10 is illustrated schematically. In this embodiment, the on-load tap changer 10 may include three selectors 20, three preselectors 40, and three on-load switching devices 60. Each selector 20, each preselector 40, and each on-load switching device 60 may be configured for a specific phase of the adjustable transformer 3010. In other words, the on-load tap changer 10 may include multiple phase assemblies, each phase assembly including only one selector 20, only one preselector 40, and only one on-load switching device 60. Therefore, a single-phase configuration of the on-load tap changer 10 (for a single-phase adjustable transformer 30) may include only one selector 20, one preselector 40, and one on-load switching device 60. It should be noted that the preselector 40 in the on-load tap changer 10 is optional.

[0033] like Figure 1 As shown, each selector 20 (more precisely, its functional component) can be mounted on a selector substrate 21, each preselector 40 (more precisely, its functional component) can be mounted on a preselector substrate 41, and each on-load tap changer 60 (more precisely, its functional component) can be mounted on an on-load tap changer substrate 61. In some embodiments, each selector 20 can be integrated with a preselector 40. In other words, each selector substrate 21 can include not only selectors 20 but also preselectors 40. It should be noted that, for the three-phase adjustable transformer 30, each phase can be allocated at least two substrates, namely one selector substrate 21 and one on-load tap changer substrate 61, that is, the on-load tap changer 10 can include at least six substrates. In the illustrated embodiment, each phase can be allocated three substrates, namely one selector substrate 21, one preselector 41, and one on-load tap changer substrate 61, that is, the on-load tap changer 10 can include a total of nine substrates. In some embodiments, the individual substrates 21, 41, 61 may be arranged horizontally or vertically in different planes. For example, six or nine substrates (more precisely, the main surfaces of the substrates on which corresponding components are mounted) may be arranged horizontally or vertically side by side in six or nine planes. In some embodiments, the individual substrates 21, 41, 61 may be arranged horizontally or vertically in a common plane. For example, six or nine substrates may be oriented horizontally or vertically and arranged side by side in a plane.

[0034] Each substrate 21, 41, 61 is preferably made of an insulating material, such as plastic or fiber-reinforced plastic (such as polyamide or a mixture of polyphthalamide and glass fiber). Each substrate 21, 41, 61 can be mounted onto and held together by the bracket 38. In some embodiments, each substrate 21, 41, 61 can be tightly connected to the strip structure of the bracket 38, for example, by means of threaded connection and / or snap-fit ​​fixing; alternatively, they can be first mounted individually onto auxiliary brackets 38 and then fixed to the common bracket 38 via auxiliary brackets 38; spacer support, injection-molded splicing, or other auxiliary plate splicing methods can also be used. It should be understood that the specific installation and fixing method between each substrate 21, 41, 61 and the bracket 38 can be flexibly selected according to the actual installation space and working conditions, and is not limited to the present exemplary description.

[0035] Advantageously, the on-load tap changer 10 can be configured with a common drive shaft 17 capable of driving all selectors 20, all preselectors 40, and all on-load switches 60. In this embodiment, the drive shaft 17 can, for example, extend through all selector substrates 21, all preselector substrates 41, and all on-load switch substrates 61. The drive shaft 17 can be driven directly or indirectly by a motor 19, for example via a transmission mechanism.

[0036] In some embodiments, the selector 20 may have a first selector arm (e.g., a first Maltese wheel), a second selector arm (e.g., a second Maltese wheel), and a selector fixed contact that can be electrically connected to the winding tap changer of the regulating winding. Each selector fixed contact may be arranged in a circular pattern and extend from a first main surface through the selector base plate 21 to a second main surface. The corresponding selector arm is rotatably supported on a support shaft and performs a rotational movement in which the corresponding selector fixed contact is contacted and activated by a movable contact on the selector arm. The first selector arm may, for example, be arranged on the first main surface of the selector base plate 21, and the second selector arm may be arranged on the opposite second main surface. The selector fixed contacts may also be arranged on both sides of the selector base plate 21. Advantageously, the selector base plate 21 may have wall elements on its outer edges. The tap changer 20 and, in particular, the selector fixed contacts are arranged in these wall elements. By arranging all the tap changers 10 of the selector 20 in the wall elements, the on-load tap changer 102 can be particularly optimized in orientation or placement in the direction of the regulating winding. The connection between the selector 20 and the regulating winding becomes particularly simple. Advantageously, the connectors 10 of each selector 20 are arranged on the same side or oriented in a common direction. It should be understood that the arrangement of the various components within the selector 20 can be varied and is not limited to the exemplary description above.

[0037] In some embodiments, the on-load switch 60 may include a vacuum switching transistor, a transition resistor, and a bridge switch. The various components of the on-load switch 60 may be arranged on a first main surface and a second main surface of the on-load switch substrate 61. The bridge switch may be mounted on the second main surface. The vacuum switching transistor and the transition resistor are mounted on the first main surface 61. However, it is possible that all components of the on-load switch 60 are mounted or arranged on either the first or second main surface of the on-load switch substrate 61. Alternatively, instead of the transition resistor, any current-limiting element, such as a reactance or rheostat, may be arranged or mounted on the on-load switch substrate 61. It should be understood that the arrangement of the various components within the on-load switch 60 can be varied and is not limited to the exemplary descriptions above.

[0038] In an optional embodiment, the preselector 40 may have a first preselector arm, a second preselector, and a preselector fixing contact. The corresponding arrangement of the preselector 40 can be implemented, for example, similar to that of the selector 20, such as being arranged on a first main surface and a second main surface of the preselector substrate 41, respectively. It should be understood that the arrangement of the various components within the preselector 40 can be diverse and is not limited to the exemplary descriptions above.

[0039] Figure 2 A schematic diagram of a first embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be disposed above the active component 31. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be arranged vertically side-by-side in different planes (nine planes in this case). That is, these substrates may be arranged in a multi-planar arrangement extending along a left-right direction H, and the main surface of each substrate may be oriented along the left-right direction H. In the illustrated embodiment, the on-load tap changer 10 may be attached or mounted on the top wall of the housing of the adjustable transformer 30 via a drive module 33 (e.g., including a motor and optional transmission mechanism and a housing surrounding these components) and / or a bracket 38, and a control device 39 may be disposed on other outer walls, such as side walls, of the housing 32 of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the on-load tap changer 10 may also be attached to or mounted on other outer walls of the housing 32 of the adjustable transformer 30 via the drive module 33 and / or the bracket 38. In other embodiments, the drive module 33 may also be at least partially arranged within the adjustable transformer 30, for example, on the bracket 38 of the on-load tap changer 10. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0040] Figure 3A schematic diagram of a second embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be arranged above the active component 31, such as the transformer core. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be arranged vertically side-by-side in different planes (nine planes in this case). That is, these substrates may be arranged in a multi-planar arrangement extending along a left-right direction H, and the main surface of each substrate may be oriented along the left-right direction H. In the illustrated embodiment, the on-load tap changer 10 may be attached to or mounted on top of the active component 31, such as the transformer core. The on-load tap changer 10 may be fastened to the top component or yoke of the active component 31, for example, via a bracket 38 and / or a drive module 33. Furthermore, the drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on the top wall of the housing of the adjustable transformer 30 or on other outer walls of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0041] Figure 4A schematic diagram of a third embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be disposed below the active component 31, such as the transformer core. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be arranged vertically side-by-side in different planes (nine planes in this case). That is, these substrates may be arranged in a multi-planar arrangement extending along a left-right direction H, and the main surface of each substrate may be oriented along the left-right direction H. In the illustrated embodiment, the on-load tap changer 10 may be attached to or mounted on the bottom of the active component 31, such as the transformer core. The on-load tap changer 10 may be fastened to the bottom component or yoke of the active component 31, for example, via a bracket 38 and / or a drive module 33. Furthermore, the drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on other outer walls of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0042] Figure 5A schematic diagram of a fourth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be arranged next to the active component 31, such as the transformer core. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be arranged vertically side-by-side in different planes (nine planes in this case). That is, these substrates may be arranged in a multi-planar arrangement extending along a left-right direction H, and the main surface of each substrate may be oriented along the left-right direction H. In the illustrated embodiment, the on-load tap changer 10 may be attached to or mounted, for example, via a bracket 38 and / or a drive module 33, on the top component or yoke of the active component 31, such as the transformer core. Furthermore, the drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on the top wall of the housing of the adjustable transformer 30 or on other outer walls of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0043] Figure 6A schematic diagram of a fifth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be disposed above the active component 31. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be horizontally oriented and arranged side-by-side in a plane. That is, these substrates may be arranged in a substantially coplanar configuration extending in a left-right direction H, and the main surface of each substrate may be oriented in a vertical direction V. In the illustrated embodiment, the on-load tap changer 10 may be attached to or mounted on the top wall of the housing of the adjustable transformer 30 via a drive module 33 (e.g., including a motor and optional transmission mechanism and a housing surrounding these components) and / or a bracket 38, and a control device 39 may be disposed on other outer walls of the housing of the adjustable transformer 30, such as side walls, and electrically connected to the drive module 33 via a cable. In other embodiments, the on-load tap changer 10 may also be attached to or mounted on other outer walls of the adjustable transformer 30 via the drive module 33 and / or the bracket 38. In other embodiments, the drive module 33 may also be at least partially arranged within the adjustable transformer 30, for example, on the bracket 38 of the on-load tap changer 10. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0044] Figure 7A schematic diagram of a sixth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be arranged above the active component 31, such as the transformer core. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be horizontally oriented and arranged side by side in a plane. That is, these substrates may be arranged in a substantially coplanar arrangement extending in the left-right direction H, and the main surface of each substrate may be oriented in the up-down direction V. In the illustrated embodiment, the on-load tap changer 10 may be attached to or mounted, for example, via a bracket 38 and / or a drive module 33, on the top component or yoke of the active component 31, such as the transformer core. Furthermore, the drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on the top wall of the housing of the adjustable transformer 30 or on other outer walls of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0045] Figure 8A schematic diagram of a seventh embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be disposed below the active component 31, such as the transformer core. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be horizontally oriented and arranged side by side in a plane. That is, these substrates may be arranged in a substantially coplanar arrangement extending in the left-right direction H, and the main surface of each substrate may be oriented in the up-down direction V. In the illustrated embodiment, the on-load tap changer 10 may be attached or mounted, for example, via a bracket 38 and / or a drive module 33, to or on the bottom component or yoke of the active component 31, such as the transformer core. Furthermore, the drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on the bottom wall of the adjustable transformer 30 or on other outer walls of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0046] Figure 9A schematic diagram of an eighth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be arranged adjacent to the active component 31, such as the transformer core. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be vertically oriented and arranged side-by-side in a plane. That is, these substrates may be arranged in a substantially coplanar configuration extending along a vertical direction V, and the main surface of each substrate may be oriented along a horizontal direction H. In the illustrated embodiment, the on-load tap changer 10 may be attached to or mounted, for example, via a bracket 38 and / or a drive module 33, to the top or bottom component or yoke of the active component 31. Furthermore, the drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on other outer walls of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0047] Figure 10 A schematic diagram of a ninth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be arranged adjacent to the active component 31, such as the transformer core. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be vertically oriented and arranged side-by-side in a plane. That is, these substrates may be arranged in a substantially coplanar configuration extending in the vertical direction V, and the main surface of each substrate may be oriented in the horizontal direction H. In the illustrated embodiment, the on-load tap changer 10 may be attached to or mounted, for example, via a bracket 38 and / or a drive module 33, on the top wall or other outer wall of the active component 31. Furthermore, the drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on other outer walls of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0048] Figure 11 A schematic diagram of a tenth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be disposed above the active component 31. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be vertically oriented and arranged side-by-side in a plane. That is, these substrates may be arranged in a substantially coplanar configuration extending in a left-right direction H, and the main surface of each substrate may be oriented in a front-back direction F. In the illustrated embodiment, the on-load tap changer 10 may be attached to the top wall of the housing of the adjustable transformer 30 via a drive module 33 (e.g., including a motor and optional transmission mechanism and a housing surrounding these components), and a control device 39 may be disposed on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the on-load tap changer 10 may also be attached to other outer walls of the adjustable transformer 30 via the drive module 33 and / or the bracket 38. In other embodiments, the drive module 33 may also be at least partially disposed within the adjustable transformer 30, for example, on the bracket 38 of the on-load tap changer 10. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0049] Figure 12 A schematic diagram of an eleventh embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be arranged above the active component 31. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be vertically oriented and arranged side-by-side in a plane. That is, these substrates may be arranged in a substantially coplanar configuration extending in the left-right direction H, and the main surface of each substrate may be oriented in the front-back direction F. In the illustrated embodiment, the on-load tap changer 10 may be attached to or mounted on the top component or yoke of the active component 31, such as the transformer core. The drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on the top wall of the housing of the adjustable transformer 30 or on another outer wall. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0050] Figure 13 A schematic diagram of a twelfth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be disposed below the active component 31. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be vertically oriented and arranged side-by-side in a plane. That is, these substrates may be arranged in a substantially coplanar configuration extending in the left-right direction H, and the main surface of each substrate may be oriented in the front-back direction F. In the illustrated embodiment, the on-load tap changer 10 may be attached to or mounted on the active component 31, such as the bottom component or yoke of the transformer core. The drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on the bottom wall or other outer wall of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0051] Figure 14 A schematic diagram of a thirteenth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be arranged adjacent to the active component 31. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be vertically oriented and arranged side-by-side in a plane. That is, these substrates may be arranged in a substantially coplanar configuration extending along a vertical direction V, and the main surface of each substrate may be oriented along a front-rear direction F. In the illustrated embodiment, the on-load tap changer 10 may be attached to the top wall of the housing of the adjustable transformer 30 via a drive module 33 (e.g., including a motor and optional transmission mechanism and a housing surrounding these components). Alternatively, the on-load tap changer 10 may be fastened to the top wall or other outer wall of the transformer via a bracket 38. The control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 can also be arranged at least partially within the adjustable transformer 30, for example on the bracket 38 of the on-load tap changer 10. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0052] Figure 15 A schematic diagram of a fourteenth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be arranged beside the active component 31. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be vertically oriented and arranged side-by-side in a plane. That is, these substrates may be arranged in a substantially coplanar configuration extending along the vertical direction V, and the main surface of each substrate may be oriented along the front-back direction F. In the illustrated embodiment, the on-load tap changer 10 may be fastened to the top component, bottom component, or yoke of the active component 31 via a bracket 38. The drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on a side wall or other outer wall of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0053] Figure 16A schematic diagram of a fifteenth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be arranged beside the active component 31, for example, on the front side or the rear side. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be vertically oriented and arranged side by side in a plane. That is, these substrates may be arranged in a substantially coplanar arrangement extending in the left-right direction H, and the main surface of each substrate may be oriented in the front-back direction F. In the illustrated embodiment, the on-load tap changer 10 may be fastened to the yoke of the active component 31 or to the outer wall of the adjustable transformer 30 via a bracket 38. The drive module 33 (e.g., including a motor and optional transmission mechanism, and a housing surrounding these components) can be attached to the bracket 38 of the on-load tap changer 10, and the control device 39 can be arranged on an outer wall, such as a side wall, of the adjustable transformer 30 and electrically connected to the drive module 33 via a cable. In other embodiments, the drive module 33 may also be arranged at least partially on a side wall or other outer wall of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0054] Figure 17A schematic diagram of a sixteenth embodiment of an adjustable transformer 30 having an on-load tap changer 10 is shown. The adjustable transformer 30 may have a housing 32 and an active component 31, such as a transformer core, disposed inside the housing 32. Within the adjustable transformer 30, the on-load tap changer 10 may be arranged next to, for example, in the upper region beside, the active component 31. The on-load tap changer 10 may have at least six substrates (nine substrates in this case), which may be vertically oriented and arranged side-by-side in different planes (nine planes in this case). That is, these substrates may be arranged in a multi-planar arrangement extending along a front-back direction F, and the main surface of each substrate may be oriented along the front-back direction F. In the illustrated embodiment, the on-load tap changer 10 may be fastened to the top component, or yoke, of the active component 31 via a bracket 38. A drive module 33 (e.g., including a motor and optional transmission mechanism and a housing surrounding these components) may be attached to the bracket 38 of the on-load tap changer 10. This arrangement is also particularly space-saving. The on-load tap changer 10 can be located very close to the active component 31. The housing 32 of the adjustable transformer 30 can be designed to save space, for example, eliminating the volume below the on-load tap changer 10. In other embodiments, the on-load tap changer 10 can be arranged in the lower region beside the active component 31, and the on-load tap changer 10 can be secured to the bottom component or yoke of the active component 31 via a bracket 38. In other embodiments, the drive module 33 of the on-load tap changer 10 can also be arranged on the outer wall of the adjustable transformer 30. Thus, the on-load tap changer 10 can be installed in the adjustable transformer 30 in a simple and space-saving manner.

[0055] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of this application. The various embodiments disclosed herein can be combined in any way without departing from the spirit and scope of this application. Those skilled in the art should also understand that various modifications can be made to the embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. An adjustable transformer with an on-load tap changer, wherein, The adjustable transformer (30) has a housing (32) and an active component (31) arranged inside the housing. Its features are, The on-load tap changer (10) has for each phase: a selector substrate (21) and an on-load switch substrate (61), or a selector substrate (21), a preselector substrate (41) and an on-load switch substrate (61), wherein a selector (20) is provided on each selector substrate (21), a preselector (40) is provided on each preselector substrate (41), and an on-load switch (60) is provided on each on-load switch substrate (61). The on-load tap changer (10) is arranged inside the housing (32) of the adjustable transformer (30) next to, above or below the active component (31).

2. The adjustable transformer with an on-load tap changer according to claim 1, characterized in that, The adjustable transformer is configured as a three-phase adjustable transformer, wherein the on-load tap changer has three selector substrates and three on-load switch substrates corresponding to the three phases, or three selector substrates, three preselector substrates, and three on-load switch substrates.

3. The adjustable transformer with an on-load tap changer according to claim 1 or 2, characterized in that, All selector boards and all on-load switch boards and / or all preselector boards of the on-load tap changer are mechanically interconnected via brackets, and the on-load tap changer is configured with a common drive shaft capable of driving all selectors and all on-load switches and / or all preselectors.

4. The adjustable transformer with an on-load tap changer according to claim 1 or 2, characterized in that, All selector boards, all on-load switch boards, and / or all preselector boards of the on-load tap changer are arranged horizontally or vertically in different planes.

5. The adjustable transformer with an on-load tap changer according to claim 4, characterized in that, All selector substrates and all on-load switch substrates and / or all preselector substrates of the on-load tap changer are arranged in a multi-planar arrangement structure extending along a first direction, and the corresponding main surfaces are oriented along the first direction.

6. The adjustable transformer with an on-load tap changer according to claim 1 or 2, characterized in that, All selector boards, all on-load switch boards, and / or all preselector boards of the on-load tap changer are arranged horizontally or vertically in a common plane.

7. The adjustable transformer with an on-load tap changer according to claim 6, characterized in that, All selector substrates and all on-load switch substrates and / or all preselector substrates of the on-load tap changer are arranged in a coplanar configuration extending along a first direction, and the corresponding main surfaces are oriented along a second direction orthogonal to the first direction.

8. The adjustable transformer with an on-load tap changer according to claim 5 or 7, characterized in that, The first direction is the left-right direction, the up-down direction, or the front-back direction.

9. The adjustable transformer with an on-load tap changer according to claim 1 or 2, characterized in that, The on-load tap changer (10) is attached to the top, bottom, or side wall of the housing (32) by means of a drive module (33) and / or a bracket (38); and / or The on-load tap changer (10) is attached to the top, bottom or side of the active component (31) by means of a drive module (33) and / or a bracket (38).

10. The adjustable transformer with an on-load tap changer according to claim 9, characterized in that, The drive module is arranged at least partially inside or outside the housing of the adjustable transformer.

11. The adjustable transformer with an on-load tap changer according to claim 1 or 2, characterized in that, A first selector arm, a second selector arm, and a selector fixing contact are mounted on the first and second main surfaces of each selector substrate; and Vacuum switching tubes, current limiting elements, and bridge switches of the on-load switch are mounted on the first and second main surfaces of each on-load switch substrate; and / or A first preselector arm, a second preselector, and a preselector fixing contact are mounted on the first and second main surfaces of each preselector substrate.

12. The adjustable transformer with an on-load tap changer according to claim 11, characterized in that, A wall element is provided on the outer edge of each selector substrate, and a corresponding selector fixing contact is arranged on the wall element.

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