CN218159957U

CN218159957U - Intelligent transformer structure

Info

Publication number: CN218159957U
Application number: CN202221686102.XU
Authority: CN
Inventors: 唐雪松; 吴有银
Original assignee: Chongqing Nari Borui Transformer Co ltd
Current assignee: Chongqing Nari Borui Transformer Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-12-27
Anticipated expiration: 2032-07-01

Abstract

The utility model provides an intelligent transformer structure relates to intelligent transformer technical field, which comprises an oil tank, be provided with iron core and winding in the oil tank, the inside damping subassembly that is used for playing the cushioning effect to the iron core that is provided with of oil tank wall, be provided with three acceleration sensor on the oil tank wall, be provided with optical fiber sensor on the winding, the oil tank inner wall is provided with temperature and humidity sensor, gathers vibration signal through three acceleration sensor, can monitor the oil temperature through temperature and humidity sensor to can monitor the running state of transformer, paste optical fiber sensor on different windings, monitor the unusual deformation that the trouble arouses minutely, adopt the self-adaptation fuzzy controller that has the time delay compensation to carry out transformer damping control to the MRE shock absorber, can not only solve trouble hidden danger problem and the noise pollution that transformer vibration arouses, can also improve the life of transformer, and can reduce noise pollution.

Description

Intelligent transformer structure

Technical Field

The utility model relates to an intelligent transformer technical field particularly, relates to an intelligent transformer structure.

Background

Along with the development of modern industry, the acceleration of urbanization process, power load is constantly rising, newly-built or extension's transformer substation quantity is constantly increasing, the transformer produces great vibration and noise at the during operation, inevitably produced adverse effect to resident's living environment and quality of life in the building, arouse the human discomfort even, the vibration noise that the transformer produced in the during operation in addition can seriously disturb the normal work of transformer and the use of relevant sensor, the violent vibration of transformer can arouse the accelerated ageing of structure, influence the life of transformer, the structural damage that arouses because of the vibration simultaneously can arouse that transformer internals appears becoming flexible, can make the transformer produce the trouble even when serious.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an intelligent transformer structure, which can effectively solve the problems of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an intelligent transformer structure, includes the oil tank, oil tank fixed mounting is on the base, oil tank internally mounted has the iron core, the iron core outside is provided with the winding, the inside damping subassembly that is used for playing the cushioning effect to the iron core that is provided with of oil tank, be provided with the corresponding acceleration sensor of three and winding low-well position on the oil tank wall respectively, be provided with optical fiber sensor on the winding, the oil tank inner wall is provided with temperature and humidity sensor.

Preferably, radiators are arranged on two sides of the oil tank, and the oil tank is connected with a low-voltage sleeve and a high-voltage sleeve through a low-voltage lead and a high-voltage lead respectively.

Preferably, the upper end of the oil tank is fixedly connected with a lifting seat and an oil conservator, one end of the oil conservator is provided with an oil level indicator, and a gas relay is arranged above the oil tank.

Preferably, the damping assembly comprises a mounting plate fixedly mounted at the bottom end of the inner wall of the oil tank, three limiting grooves are formed in the mounting plate, the limiting grooves are connected with a bidirectional screw rod in a rotating mode, and two sides of the limiting grooves are fixedly mounted with sliding rods.

Preferably, two symmetrical movable blocks are movably sleeved outside the bidirectional screw rod and the rod body of the sliding rod respectively, and an L-shaped fixed plate is fixedly mounted on the upper surface of each movable block.

Preferably, MRE dampers are fixedly mounted on inner sides of the two L-shaped fixing plates, respectively, and the iron core is fixedly mounted on upper surfaces of the two MRE dampers.

Preferably, a movable groove is formed in the middle of one side of the mounting plate, and a connecting shaft fixedly connected with one end of the bidirectional screw rod is movably arranged in the movable groove.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) The vibration signals are acquired by the three acceleration sensors, the states of a transformer winding and an iron core are analyzed by the vibration signals on the surface of the box body, the acquired vibration signals are weak and contain environmental noise, so that a signal conditioner is required to amplify and reduce noise of the signals, after the processing is completed, the acquired signals are analog signals, and a lower computer cannot directly process the analog signals, so that the analog signals are required to be converted into digital signals which can be processed by the lower computer through a data acquisition card, the data are packed and sent to an upper computer for real-time display and fault analysis after the data are obtained by the lower computer, the method for monitoring the transformer on line by adopting the vibration analysis method has the greatest advantages that the acceleration sensors are not electrically connected with the whole power system, the normal operation of the whole power system is not affected, meanwhile, early potential faults of the winding can be identified, the oil temperature can be monitored through a temperature and humidity sensor, the operation state of the transformer can be monitored, the vibration of the transformer mainly comes from the winding, the internal strong magnetic field environment puts a higher requirement on the anti-interference performance of the sensor, and abnormal deformation caused by attaching the optical fiber sensor to different faults can be monitored accurately.

(2) The self-adaptive fuzzy controller with time delay compensation is adopted to carry out transformer vibration reduction control on the MRE vibration absorber, the transformer fault vibration attenuation of 10dB is taken as a control target, the intelligent vibration reduction application purpose of the transformer is achieved, the vibration characteristic of the transformer is utilized to carry out real-time monitoring on the working health condition of the transformer, and meanwhile, the advanced intelligent vibration reduction technology is combined in the manufacturing process of the transformer, so that the problems of hidden trouble and noise pollution caused by the vibration of the transformer can be solved, the safety life of the transformer can be prolonged, and the noise pollution can be reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of an intelligent transformer structure of the present invention;

fig. 2 is a schematic structural view of a vibration damping assembly in an intelligent transformer structure of the present invention;

fig. 3 is a schematic view of a top view structure of a vibration damping assembly in an intelligent transformer structure according to the present invention;

fig. 4 isbase:Sub>A schematic view ofbase:Sub>A cross-sectionbase:Sub>A-base:Sub>A in fig. 3 of an intelligent transformer structure according to the present invention;

fig. 5 is the structure enlarger of B department in fig. 4 of the structure of the intelligent transformer of the utility model.

In the figure: 1. an oil tank; 2. a vibration reduction assembly; 201. mounting a plate; 202. a limiting groove; 203. a movable groove; 204. an L-shaped fixing plate; 205. an MRE shock absorber; 206. a bidirectional screw rod; 207. a slide bar; 208. a movable block; 209. a connecting shaft; 3. an iron core; 4. a base; 5. a winding; 6. a high voltage lead; 7. a lifting seat; 8. a high voltage bushing; 9. a low voltage lead; 10. a low-pressure bushing; 11. a gas relay; 12. an oil conservator; 13. an oil level gauge; 14. a heat sink; 15. an acceleration sensor; 16. an optical fiber sensor; 17. and a temperature and humidity sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

With specific reference to fig. 1, an intelligent transformer structure comprises an oil tank 1, wherein the oil tank 1 is fixedly mounted on a base 4, an iron core 3 is mounted inside the oil tank 1, a winding 5 is arranged outside the iron core 3, a vibration damping component 2 for damping the iron core 3 is arranged inside the oil tank 1, three acceleration sensors 15 corresponding to the low position and the high position of the winding 5 are respectively arranged on the tank wall of the oil tank 1, an optical fiber sensor 16 is arranged on the winding 5, and a temperature and humidity sensor 17 is arranged on the inner wall of the oil tank 1.

Referring to fig. 1 specifically, radiators 14 are arranged on both sides of an oil tank 1, the oil tank 1 is connected with a low-voltage bushing 10 and a high-voltage bushing 8 through a low-voltage lead 9 and a high-voltage lead 6 respectively, a lifting seat 7 and an oil conservator 12 are fixedly connected to the upper end of the oil tank 1, an oil level indicator 13 is arranged at one end of the oil conservator 12, and a gas relay 11 is arranged above the oil tank 1.

It can be understood that, in the present application, the three acceleration sensors 15 are respectively installed on the box walls corresponding to the low, medium and high positions of the three-phase winding, vibration signals are collected by the three acceleration sensors 15, the states of the transformer winding 5 and the iron core 3 are analyzed by the vibration signals on the surface of the box body, the collected vibration signals are weak, and meanwhile, the signals contain environmental noise, so that a signal conditioner is needed to amplify and reduce noise of the signals, after the processing is completed, the collected signals are analog signals, and the analog signals cannot be directly processed by a lower computer, so that the analog signals need to be converted into digital signals which can be processed by the lower computer through a data acquisition card, the lower computer can package and send the data to an upper computer for real-time display and fault analysis after obtaining the data, the method for online monitoring the transformer by adopting a vibration analysis method has the greatest advantage that the acceleration sensors 15 are not electrically connected with the whole power system, has no influence on the normal operation of the whole power system, and can identify potential faults of the winding 5 at the same time, thereby realizing huge economic benefit for online monitoring, and developing social benefits for the early diagnosis of the transformer operation condition and the maintenance.

It should be noted that the temperature and humidity sensor 17 can monitor the oil temperature, so as to monitor the operation state of the transformer, the vibration of the transformer mainly comes from the winding 5, and the strong magnetic field environment inside provides a high requirement for the anti-interference performance of the sensor, so that the optical fiber sensor 16 is selectively attached to different windings 5, and the abnormal deformation caused by the fault is precisely monitored.

Referring to fig. 1, 2 and 3 specifically, the damping assembly 2 includes a mounting plate 201 fixedly mounted at the bottom end of the inner wall of the oil tank 1, three limiting grooves 202 are formed in the mounting plate 201, a bidirectional screw rod 206 is rotatably connected to the inside of the middle limiting groove 202, and a sliding rod 207 is fixedly mounted inside the limiting grooves 202 on the two sides.

Referring to fig. 2 and 4 in particular, two symmetrical movable blocks 208 are movably sleeved outside the two-way screw rod 206 and the sliding rod 207 respectively, and an L-shaped fixing plate 204 is fixedly mounted on the upper surface of each movable block 208.

In this embodiment, the two movable blocks 208 in the middle are in threaded fit with the bidirectional screw rod 206, the movable blocks 208 on both sides are slidably connected with the sliding rod 207, before the iron core 3 is installed in the oil tank 1, the output shaft of the motor is fixedly connected with the connecting shaft 209 through the coupler, the bidirectional screw rod 206 is driven to rotate through the motor, so that the movable blocks 208 on both sides simultaneously drive the L-shaped fixed plate 204 and the MRE damper 205 to simultaneously move toward the direction close to the iron core 3 until the two MRE dampers 205 move to both ends of the bottom of the iron core 3, the positions of the MRE dampers 205 can be adjusted according to the iron cores 3 of different specifications through the arrangement, and the stability and the applicability are improved.

Specifically referring to fig. 1, 2, 4 and 5, MRE dampers 205 are fixedly mounted on inner sides of two L-shaped fixing plates 204, respectively, the iron core 3 is fixedly mounted on upper surfaces of the two MRE dampers 205, a movable groove 203 is formed in the middle of one side of the mounting plate 201, and a connecting shaft 209 fixedly connected with one end of a bidirectional screw 206 is movably arranged in the movable groove 203.

It should be noted that, in this project, the adaptive fuzzy controller with the time delay compensation is adopted to perform the transformer damping control on the MRE damper 205, the transformer fault vibration attenuation of 10dB is taken as the control target, so as to achieve the purpose of the intelligent transformer damping application, and the vibration characteristics of the transformer are utilized to monitor the working health condition of the transformer in real time, and simultaneously, the advanced intelligent damping technology is combined in the manufacturing process of the transformer, so that not only can the problem of fault hidden trouble and noise pollution caused by the transformer vibration be solved, but also the safety life of the transformer can be prolonged, and the noise pollution can be reduced.

The working principle of the intelligent transformer structure is as follows:

when the method is used, the three acceleration sensors 15 are used for collecting vibration signals, the vibration signals on the surface of the box body are used for analyzing the states of the transformer winding 5 and the iron core 3, because the collected vibration signals are weak and contain environmental noise, a signal conditioner is needed to amplify and reduce noise of the signals, after the processing is finished, because the collected signals are analog signals and a lower computer cannot directly process the analog signals, the analog signals need to be converted into digital signals which can be processed by the lower computer through a data acquisition card, the data can be packed and sent to the upper computer for real-time display and fault analysis after the lower computer obtains the data, and the method for monitoring the transformer on line by adopting the vibration analysis method has the greatest advantage that the acceleration sensors 15 are not electrically connected with the whole power system, the normal operation of the whole power system is not influenced, the early potential fault of the winding 5 can be identified, the temperature of oil can be monitored through the temperature and humidity sensor 17, the operation state of the transformer can be monitored, the vibration of the transformer mainly comes from the winding 5, the internal strong magnetic field environment puts a high requirement on the anti-interference performance of the sensor, therefore, the optical fiber sensor 16 is attached to different windings 5 to precisely monitor the abnormal deformation caused by the fault, the working health condition of the transformer is monitored in real time by using the vibration characteristic of the transformer, and an advanced intelligent vibration reduction technology is combined in the manufacturing process of the transformer, so that the problems of potential fault hazards and noise pollution caused by the vibration of the transformer can be solved, the safety life of the transformer can be prolonged, and the noise pollution can be reduced.

Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all embodiments cannot be exhausted here, and all obvious variations or changes introduced by the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. The utility model provides an intelligent transformer structure, includes oil tank (1), its characterized in that: oil tank (1) fixed mounting is on base (4), oil tank (1) internally mounted has iron core (3), iron core (3) outside is provided with winding (5), oil tank (1) inside is provided with and is used for damping effect's damping component (2) to iron core (3), be provided with three acceleration sensor (15) corresponding with winding (5) low and well high position on oil tank (1) tank wall respectively, be provided with optical fiber sensor (16) on winding (5), oil tank (1) inner wall is provided with temperature and humidity sensor (17).

2. A smart transformer arrangement according to claim 1, characterised in that: radiator (14) all are provided with to oil tank (1) both sides, be connected with low-voltage bushing (10) and high-voltage bushing (8) through low pressure lead (9) and high-voltage lead (6) respectively on oil tank (1).

3. A smart transformer arrangement according to claim 2, characterised in that: the oil tank is characterized in that the upper end of the oil tank (1) is fixedly connected with a lifting seat (7) and an oil conservator (12), one end of the oil conservator (12) is provided with an oil level indicator (13), and a gas relay (11) is arranged above the oil tank (1).

4. A smart transformer arrangement according to claim 3, characterised in that: damping subassembly (2) including mounting panel (201) of fixed mounting in oil tank (1) inner wall bottom, three spacing groove (202) have been seted up on mounting panel (201), middle spacing groove (202) inside is rotated and is connected with two-way lead screw (206), both sides spacing groove (202) inside fixed mounting has slide bar (207).

5. A smart transformer architecture as claimed in claim 4, characterized in that: the bidirectional screw rod (206) and the sliding rod (207) are respectively movably sleeved with two symmetrical movable blocks (208), and an L-shaped fixing plate (204) is fixedly mounted on the upper surface of each movable block (208).

6. A smart transformer arrangement according to claim 5, characterised in that: MRE vibration dampers (205) are fixedly mounted on the inner sides of the two L-shaped fixing plates (204) respectively, and the iron core (3) is fixedly mounted on the upper surfaces of the two MRE vibration dampers (205).

7. A smart transformer arrangement according to claim 6, characterised in that: the middle part of one side of the mounting plate (201) is provided with a movable groove (203), and a connecting shaft (209) fixedly connected with one end of a bidirectional screw rod (206) is movably arranged in the movable groove (203).