CN216351040U

CN216351040U - Transformer fault simulation device

Info

Publication number: CN216351040U
Application number: CN202122932943.6U
Authority: CN
Inventors: 陈雨欧; 梁新钰; 张方正
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-04-19
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a transformer fault simulation device which comprises an oil tank, an iron core, a low-voltage side winding, a shielding layer and a high-voltage side winding, wherein two U-shaped supports are arranged at the top end of the oil tank; according to the transformer fault simulation device, the generation, disappearance and aggravation efficiency of the winding deformation fault is ensured by facilitating the simulation of the transformer winding deformation fault, the trouble of replacing a fault model in the fault simulation process is avoided, the windings with different turns are convenient to replace, the practicability of the transformer fault simulation device is further improved, the U-shaped lifting plate can be manually lifted or electrically lifted according to the use requirements of simulation personnel, and the practicability of the transformer fault simulation device is improved.

Description

Transformer fault simulation device

Technical Field

The utility model relates to the related technical field of transformers, in particular to a transformer fault simulation device.

Background

The transformer is a device for changing an ac voltage by using the principle of electromagnetic induction, and its main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions of the transformer are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), and the like, and can be classified into: power transformers and special transformers.

A method for fault simulation of a power transformer is disclosed according to chinese patent application No. CN 201310594906.6. At present, a fault simulation method in a transformer generally adopts a returned transformer or directly carries out a fault simulation test in transformer oil, the workload is large, fault modules need to be frequently replaced, and the simulation effect is poor. The utility model is based on the structure of the power simulation transformer and the transformer fault model, directly controls the generation, disappearance and aggravation of the partial discharge fault and the winding deformation fault of the transformer outside the transformer body by an external regulation control method, and can safely regulate in the boosting process. However, the adjustment is inconvenient in the adjustment process, and the efficiency of generation, disappearance and aggravation of winding deformation faults is influenced, so that the transformer fault simulation device is provided by improving the efficiency.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a transformer fault simulation device.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model is realized by the following technical scheme: the utility model provides a transformer fault simulation device, includes oil tank, iron core, low pressure side winding, shielding layer and high pressure side winding, the top of oil tank is equipped with two U-shaped supports, two it is equipped with the pulling mechanism who is used for stimulateeing the iron core to slide on the U-shaped support, pulling mechanism is including sliding the U-shaped lifter plate of establishing on the U-shaped support, the back of the body end that carries on mutually of U-shaped lifter plate is equipped with the axis of rotation, be equipped with the rotor plate in the axis of rotation, the both ends tip of iron core is established respectively on the rotor plate.

As a preferred technical solution of the present invention, the iron core and the rotating plate are connected through a connecting member, the connecting member includes a mounting groove formed at an end of the iron core, a return spring is disposed inside the mounting groove, a connecting rod is disposed at an end of the mounting groove, and the rotating plate is provided with a connecting hole through which the connecting rod passes.

As a preferred technical scheme of the utility model, the inner wall of the U-shaped bracket is provided with a dovetail groove, and the U-shaped lifting plate is provided with a dovetail block which is matched with the dovetail groove to slide.

As a preferable technical scheme of the utility model, a handle for lifting the U-shaped lifting plate is arranged in the middle of the top end of the U-shaped lifting plate.

As a preferable technical scheme of the utility model, an installation plate is arranged between the two U-shaped supports, a rope winding wheel is arranged at the top end of the installation plate through an installation seat, a driving motor used for driving the rope winding wheel to rotate is installed on the installation seat, and a lifting rope connected with a handle is wound on the rope winding wheel.

As a preferable technical scheme of the utility model, the mounting plate is provided with a rope threading hole for the hanging rope to pass through.

The utility model has the beneficial effects that:

1. the transformer fault simulation device is characterized in that a pulling mechanism for pulling an iron core is arranged on two U-shaped supports in a sliding mode, wherein the pulling mechanism comprises a U-shaped lifting plate arranged on the U-shaped supports in a sliding mode, when a transformer winding deformation fault needs to be generated, the U-shaped lifting plate is manually lifted upwards, the U-shaped lifting plate drives a rotating shaft to move upwards, the rotating shaft drives a rotating plate to move upwards, the rotating plate drives the iron core to move upwards and close to a low-voltage side winding, the distance between the iron core and the winding is changed, characteristics such as capacitance and impedance of a transformer winding are changed accordingly, and simulation of the generation of the transformer winding deformation fault is achieved; when the deformation fault degree of the winding needs to be increased, the U-shaped lifting plate can be continuously lifted upwards to realize the simulation of the deformation and the increase of the transformer winding; when the transformer winding deformation fault needs to be eliminated, the U-shaped lifting plate only needs to be loosened, the U-shaped lifting plate moves downwards under the action of the self gravity of the U-shaped lifting plate, and the iron core is just positioned in the middle of the low-voltage side winding after the bottommost end of the U-shaped lifting plate is contacted with the oil tank, so that the transformer winding deformation fault can be conveniently simulated, the generation, disappearance and aggravation efficiency of the winding deformation fault is ensured, and the trouble of replacing a fault model in the fault simulation process is avoided.

2. This kind of transformer fault analogue means, be connected through the connecting piece between through iron core and the rotor plate, wherein, the connecting piece is including seting up the mounting groove at the iron core tip, when simulating transformer fault, can change the winding of different turns, when changing the winding of different turns, promote the connecting rod, the connecting rod is to the mounting groove internal motion of iron core tip and compress reset spring, take off the rotor plate from the connecting rod, revolute the axis of rotation half a turn with the rotor plate, take off the winding of renewal with the original winding outside the iron core, rotate the rotor plate back original position and make the connecting rod pass in the connecting hole on the rotor plate under reset spring elastic potential energy's effect again, be convenient for change the winding of different turns, this transformer fault analogue means's practicality has further been improved.

3. This kind of transformer fault analogue means, be equipped with the mounting panel through between two U-shaped supports, the top of mounting panel is equipped with the rope winding wheel through the mount pad, when needs produce transformer winding deformation trouble, also can drive the rope winding wheel through driving motor's output and rotate, the rope winding wheel rotates and tightens up the lifting rope, make lifting rope pulling U-shaped lifter plate upward movement, can select manual promotion U-shaped lifter plate or select electronic promotion U-shaped lifter plate according to simulation personnel's user demand, this transformer fault analogue means's practicality has further been improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural diagram of a transformer fault simulation apparatus according to the present invention;

FIG. 2 is a schematic view of a connection structure of a U-shaped lifting plate and a rotating plate of the transformer fault simulation device according to the present invention;

fig. 3 is a sectional view of a core structure of the fault simulation apparatus for a transformer according to the present invention;

fig. 4 is a schematic structural diagram of a U-shaped bracket of the transformer fault simulation device of the utility model.

In the figure: 1. an oil tank; 2. an iron core; 3. a low-voltage side winding; 4. a shielding layer; 5. a high-voltage side winding; 6. a rotating plate; 7. a U-shaped lifter plate; 8. a U-shaped bracket; 9. a dovetail groove; 10. a dovetail block; 11. a handle; 12. a lifting rope; 13. a mounting seat; 14. a drive motor; 15. a rope winding wheel; 16. a rotating shaft; 17. mounting grooves; 18. a return spring; 19. a connecting rod; 20. a stringing hole; 21. and (7) mounting the plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in fig. 1-4, the transformer fault simulation device of the present invention includes an oil tank 1, an iron core 2, a low-voltage side winding 3, a shielding layer 4, and a high-voltage side winding 5, wherein two U-shaped brackets 8 are disposed on a top end of the oil tank 1, a pulling mechanism for pulling the iron core 2 is slidably disposed on the two U-shaped brackets 8, the pulling mechanism includes a U-shaped lifting plate 7 slidably disposed on the U-shaped brackets 8, a rotating shaft 16 is disposed at an opposite end of the U-shaped lifting plate 7, a rotating plate 6 is disposed on the rotating shaft 16, and end portions of two ends of the iron core 2 are respectively disposed on the rotating plate 6.

Wherein, the iron core 2 is connected with the rotating plate 6 by a connecting piece, the connecting piece comprises a mounting groove 17 arranged at the end part of the iron core 2, a reset spring 18 is arranged inside the mounting groove 17, a connecting rod 19 is arranged at the end part of the mounting groove 17, a connecting hole for the connecting rod 19 to pass through is arranged on the rotating plate 6, when the transformer fault is simulated, windings with different turns can be replaced, when the windings with different turns are replaced, the connecting rod 19 is pushed, the connecting rod 19 moves towards the mounting groove 17 at the end part of the iron core 2 and compresses the reset spring 18, the rotating plate 6 is taken down from the connecting rod 19, the rotating plate 6 rotates half a turn around the rotating shaft 16, the original winding outside the iron core 2 is taken down to be replaced by a new winding, then the rotating plate 6 is rotated to the original position and the connecting rod 19 passes through the connecting hole on the rotating plate 6 under the action of the elastic potential energy of the reset spring 18, the winding with different turns is convenient to replace, and the practicability of the transformer fault simulation device is further improved.

The dovetail groove 9 is formed in the inner wall of the U-shaped support 8, the dovetail block 10 which slides in match with the dovetail groove 9 is arranged on the U-shaped lifting plate 7, and when the U-shaped lifting plate 7 is lifted, the dovetail block 10 on the U-shaped lifting plate 7 moves inside the dovetail groove 9, so that the stability of the vertical movement of the U-shaped lifting plate 7 is improved.

The middle of the top end of the U-shaped lifting plate 7 is provided with a handle 11 used for lifting the U-shaped lifting plate 7, and the U-shaped lifting plate 7 is convenient to lift by the handle 11 to move the iron core 2.

Wherein, be equipped with mounting panel 21 between two U-shaped supports 8, the top of mounting panel 21 is equipped with around rope wheel 15 through mount pad 13, install on the mount pad 13 and be used for driving around rope wheel 15 pivoted driving motor 14, it has lifting rope 12 that is connected with handle 11 to wind on the rope wheel 15, set up the wire rope handling hole 20 that supplies lifting rope 12 to pass on the mounting panel 21, when needs produce transformer winding deformation trouble, also can drive around rope wheel 15 through driving motor 14's output and rotate, it tightens up lifting rope 12 to rotate around rope wheel 15, make lifting rope 12 pulling U-shaped lifter plate 7 upward movement, can select manual promotion U-shaped lifter plate 7 or select electronic promotion U-shaped lifter plate 7 according to simulation personnel's user demand, the practicality of this transformer fault simulation device has further been improved.

The working principle is as follows: according to the transformer fault simulation device, a pulling mechanism for pulling an iron core 2 is arranged on two U-shaped supports 8 in a sliding mode, wherein the pulling mechanism comprises a U-shaped lifting plate 7 arranged on the U-shaped supports 8 in a sliding mode, when a transformer winding deformation fault needs to be generated, the U-shaped lifting plate 7 is lifted upwards manually, the U-shaped lifting plate 7 drives a rotating shaft 16 to move upwards, the rotating shaft 16 drives a rotating plate 6 to move upwards, the rotating plate 6 drives the iron core 2 to move upwards and is close to a low-voltage side winding 3, the distance between the iron core 2 and the winding can be changed, characteristics such as capacitance and impedance of a transformer winding are changed accordingly, and simulation of the transformer winding deformation fault is achieved; when the deformation fault degree of the transformer winding needs to be increased, the U-shaped lifting plate 7 can be continuously lifted upwards to realize the simulation of the deformation and the increase of the transformer winding; when transformer winding warp the trouble as needs elimination, only need loosen U-shaped lifter plate 7, downstream under the effect of U-shaped lifter plate 7 self gravity, bottommost and oil tank on U-shaped lifter plate 7: after the phase 1 contacts with the iron core 2, the iron core is just in the middle of the low-voltage side winding 3, so that the deformation fault of the transformer winding can be conveniently simulated, the generation, disappearance and aggravation efficiency of the deformation fault of the winding can be ensured, and the trouble of replacing a fault model in the fault simulation process can be avoided.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a transformer fault simulation device, includes oil tank (1), iron core (2), low pressure side winding (3), shielding layer (4) and high pressure side winding (5), its characterized in that, the top of oil tank (1) is equipped with two U-shaped supports (8), two sliding on U-shaped support (8) is equipped with the pulling mechanism who is used for pulling iron core (2), pulling mechanism is including sliding U-shaped lifter plate (7) of establishing on U-shaped support (8), the end of carrying on the back of the body of U-shaped lifter plate (7) is equipped with axis of rotation (16), be equipped with rotor plate (6) on axis of rotation (16), the both ends tip of iron core (2) is established respectively on rotor plate (6).

2. The transformer fault simulation device according to claim 1, wherein the iron core (2) is connected with the rotating plate (6) through a connecting member, the connecting member comprises a mounting groove (17) formed at an end of the iron core (2), a return spring (18) is arranged inside the mounting groove (17), a connecting rod (19) is arranged at an end of the mounting groove (17), and a connecting hole for the connecting rod (19) to pass through is formed in the rotating plate (6).

3. The transformer fault simulation device according to claim 1, wherein a dovetail groove (9) is formed in the inner wall of the U-shaped support (8), and a dovetail block (10) which is matched with the dovetail groove (9) and slides is arranged on the U-shaped lifting plate (7).

4. The transformer fault simulator according to claim 1, characterized in that the middle of the top end of the U-shaped lifter plate (7) is provided with a handle (11) for lifting the U-shaped lifter plate (7).

5. The transformer fault simulation device according to claim 4, characterized in that a mounting plate (21) is arranged between the two U-shaped brackets (8), a rope winding wheel (15) is arranged at the top end of the mounting plate (21) through a mounting seat (13), a driving motor (14) for driving the rope winding wheel (15) to rotate is mounted on the mounting seat (13), and a lifting rope (12) connected with a handle (11) is wound on the rope winding wheel (15).

6. The transformer fault simulator according to claim 5, wherein the mounting plate (21) is provided with a rope threading hole (20) for a lifting rope (12) to pass through.