Converter transformer loss measuring device and method thereof

Abstract

The invention belongs to the technical field of electrical performance testing devices, and particularly relates to a converter transformer loss measuring device and method. A converter transformer loss measuring device provided by the present invention comprises a measuring platform, the upper end of the measuring platform is fixedly connected with a measuring device body, the upper end of the measuring platform is provided with a converter transformer body, and an electrical terminal of the converter transformer body is connected with the measuring device body; and the anti-interference assembly is used for preventing dust from entering a measurement position while reducing external electromagnetic interference. By arranging the anti-interference assembly, during measurement, the multiple blocking copper rods are driven to rotate, due to the low magnetic conductivity of the blocking copper rods, the blocking copper rods can effectively isolate an external magnetic field, the influence of external electromagnetic interference on a measurement result is reduced, the rotating blocking copper rods form a relatively closed measurement environment, dust is prevented from entering a measurement position, and the measurement accuracy is improved. Poor electrical contact or short circuit of equipment is prevented, and the measurement precision is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical performance testing devices, and in particular relates to a converter transformer loss measurement device and a method thereof. Background Art

[0002] A converter transformer is a special transformer used in high-voltage direct current (HVDC) transmission systems. Its main function is to convert alternating current (AC) into a voltage level suitable for HVDC transmission. It is usually used in converter stations of HVDC transmission systems, where AC is converted into DC, or DC is converted back into AC.

[0003] Before using the converter transformer, it is necessary to measure its loss to evaluate and ensure whether the converter transformer is efficient, stable and safe during operation. The common methods of existing loss measurement include no-load loss test, load loss test, thermal stability test and frequency response test. Among them, the no-load loss test is to evaluate the iron loss by measuring the input power of the transformer without load, such as the high-frequency transformer loss measurement system and method disclosed in China Publication No. CN112578187A.

[0004] However, the existing loss measurement device still has the following technical problems when measuring the converter transformer: During the measurement process, it is impossible to shield external electromagnetic interference, which causes external electromagnetic interference to affect loss measuring instruments (such as power analyzers, current and voltage measuring instruments, etc.) through radiation or coupling, resulting in reduced measurement accuracy or even errors. At the same time, dust in the outside air can easily cause poor electrical contact or short circuit of the equipment when entering the measurement position, affecting the measurement accuracy. Summary of the invention

[0005] The purpose of the present invention is to address the problems raised in the above background technology and provide a converter transformer loss measurement device and method that can effectively isolate the external magnetic field, reduce the impact of external electromagnetic interference on the measurement results, and at the same time form a relatively closed measurement environment to prevent dust from entering the measurement position.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A converter transformer loss measuring device, comprising: A measuring platform, the upper end of which is fixedly connected to a measuring device body, a converter transformer body is placed on the upper end of the measuring platform, and an electrical terminal of the converter transformer body is connected to an electrical body of the measuring device; An anti-interference component is used to reduce external electromagnetic interference while preventing dust from entering the measurement position. The anti-interference component includes a rotating ring rotatably connected to the upper end of the measurement platform, a gear ring is fixedly connected to the rotating ring, a plurality of blocking copper rods distributed in a circular array are fixedly connected to the upper end of the rotating ring, a rotating rod is rotatably connected to the upper end of the measurement platform, a gear meshing with the gear ring is fixedly connected to the rotating rod, and a motor for driving the rotating rod is fixedly connected to the lower end of the measurement platform; Heat sink components are used to accelerate air flow during measurement to avoid errors in loss measurement due to excessive temperature.

[0007] Preferably, the heat dissipation assembly includes two support plates fixedly connected to the upper end of the measuring platform, a support rod is rotatably connected between the two support plates, a connecting plate is fixedly connected to the support rod, a wind plate is fixedly connected to the upper end of the connecting plate, a transmission component is provided between the support rod and the rotating rod, which is used to drive the heat dissipation assembly to operate synchronously while the anti-interference component is working, and a static electricity removal component is provided in the connecting plate, which is used to reduce static electricity accumulation while dissipating heat to ensure the stability of the measurement environment.

[0008] Preferably, the transmission component includes a side plate fixedly connected to the upper end of the measuring platform, one end of the support rod extends outside the support plate and is fixedly connected to a semicircular tooth plate, a U-shaped guide rail is fixedly connected to the side wall of the side plate, a first rack is slidably connected in the U-shaped guide rail, a first spring is provided between the first rack and the inner wall of the U-shaped guide rail, an incomplete gear meshing with the first rack is fixedly connected to the top of the rotating rod, an extension rod is fixedly connected to the first rack, and the end of the extension rod away from the first rack is fixedly connected to a second rack meshing with the semicircular tooth plate.

[0009] Preferably, the static electricity removal component includes a cavity opened inside the connecting plate, a counterweight block is sealed and slidably connected in the cavity, a plurality of second springs distributed in a linear array are arranged between the counterweight block and the inner wall of the cavity, a storage box is fixedly connected to the outer wall of the connecting plate, static electricity eliminating spray is stored in the storage box, a liquid inlet channel is connected between the storage box and the space above the counterweight block in the cavity, a liquid discharge channel is connected between the space above the counterweight block in the cavity and the outside world, and a first one-way valve is provided in both the liquid inlet channel and the liquid discharge channel.

[0010] Preferably, the upper end of the measuring platform is also provided with a dust reduction component controlled by a transmission component, which is used for performing dust reduction treatment on the air around the measuring position to improve the dust removal effect. The dust reduction component includes an annular guide box fixedly connected to the upper end of the measuring platform, a liquid storage tank is fixedly connected to the side wall of the side plate, a liquid pumping cavity is opened inside the first rack, a piston block is sealingly and slidably connected inside the liquid pumping cavity, a connecting rod is fixedly connected between the piston block and the inner wall of the U-shaped guide rail, a liquid pumping hose is connected between the space on the side of the liquid pumping cavity away from the connecting rod and the liquid storage tank, a liquid discharge hose is connected between the space on the side of the liquid pumping cavity away from the connecting rod and the annular guide box, and a second one-way valve is provided in both the liquid pumping hose and the liquid discharge hose.

[0011] Preferably, the upper end of the measuring platform is also provided with a circular motion component controlled by a rotating rod, which is used for comprehensively and evenly spraying the dust suppression liquid in the annular guide box to the surrounding side of the measuring position, the circular motion component includes a reciprocating threaded section arranged on the rotating rod body, and the reciprocating threaded section is sleeved with a lifting plate driven reciprocatingly, the upper end of the measuring platform is fixedly connected with a U-shaped limit plate, the lifting plate is slidably connected to the inner wall of the U-shaped limit plate along the vertical direction, the lifting plate is rotatably connected with a guide wheel through an L-shaped rod, the bottom wall of the annular guide box is sealingly and rotatably connected with a guide ring, a torsion spring is provided between the guide ring and the inner wall of the annular guide box, a plurality of drainage ports are fixedly connected to the guide ring, each of the drainage ports is connected to the inside of the annular guide box and the outside, a spiral guide rail is fixedly connected to the outer wall of the guide ring, and the guide wheel rolls in contact with the bottom end of the spiral guide rail.

[0012] Preferably, each of the liquid discharge ports and the discharge port of the liquid discharge channel is provided with an atomizing nozzle.

[0013] A measurement method applied to the converter transformer loss measurement device comprises: S1. Loss measurement: Place the converter transformer body inside the rotating ring, connect the measuring device body to the input and output ends of the converter transformer body, and apply a specific voltage to measure the core loss; S2. Anti-interference processing: Turn on the motor to drive the rotating rod to rotate, and then drive the rotating ring to rotate through the gears and gear rings, so that the multiple blocking copper rods on the rotating ring rotate. The low magnetic permeability of the blocking copper rods enables them to effectively isolate the external magnetic field, and the rotating blocking copper rods can form a relatively closed measurement environment, so that dust and other impurities are blocked outside the measurement position by the rotating blocking copper rods; S3, heat dissipation treatment: When the rotating rod rotates, it will drive the incomplete gear on its upper end to rotate, so that the first rack can perform reciprocating horizontal displacement, and under the action of the second rack and the semicircular tooth plate, the wind plate can reciprocate and swing just above the measuring position, thereby accelerating the air flow speed just above the measuring position; S4. Anti-static treatment: During the reciprocating swing of the connecting plate, the angle between the counterweight block and the cavity is constantly changing, so that the counterweight block slides back and forth relative to the cavity, thereby continuously pumping the anti-static spray in the storage box to the measuring position, reducing the accumulation of static electricity at the measuring position; S5, dust reduction treatment: during the reciprocating horizontal displacement of the first rack, the piston block is able to reciprocate horizontally in the pumping chamber, thereby continuously pumping the dust reduction liquid in the liquid storage tank into the annular guide box, and the dust reduction liquid is discharged through the annular guide box to settle the dust in the air around the measuring position; S6. Uniform liquid discharge process: During the rotation of the rotating rod, the lifting plate will perform reciprocating vertical displacement along the reciprocating thread segment, so that different positions of the spiral guide rail will collide with the guide wheel, allowing multiple liquid discharge ports to rotate during the process of discharging the dust suppression liquid, and the dust suppression liquid will be evenly sprayed to the surrounding side of the measuring position.

[0014] Compared with the existing technology, the advantages of the converter transformer loss measurement device and method are: 1. The present invention sets an anti-interference component. When measuring, the motor is turned on to drive the rotating rod to rotate, and then the multiple blocking copper rods on the rotating ring are driven to rotate through the gears and the gear ring. The low magnetic permeability of the blocking copper rods enables them to effectively isolate the external magnetic field and reduce the influence of external electromagnetic interference on the measurement results. The rotating blocking copper rods can form a relatively closed measurement environment to prevent dust from entering the measurement position, prevent poor electrical contact or short circuit of the equipment, and further improve the measurement accuracy.

[0015] 2. The present invention sets a heat dissipation component. When the rotating rod rotates, the incomplete gear on its upper end will be driven to rotate, thereby driving the first rack to perform reciprocating horizontal displacement in the U-shaped guide rail, and further driving the wind plate to perform reciprocating swing just above the measuring position through the second rack and the semicircular tooth plate, thereby accelerating the air flow speed just above the measuring position, improving the heat dissipation effect, and avoiding errors in loss measurement caused by excessive temperature.

[0016] 3. The present invention provides a static-eliminating component. During the reciprocating swinging of the connecting plate, the angle between the counterweight and the cavity changes continuously, resulting in a continuous change in the force direction between the counterweight's own gravity and the elastic force of the second spring. This enables the counterweight to slide back and forth relative to the cavity during the swinging of the connecting plate, thereby continuously pumping the static-eliminating spray to the measuring position, thereby reducing the static electricity accumulation at the measuring position and ensuring the stability of the test environment.

[0017] 4. The present invention sets a dust reduction component, so that during the reciprocating horizontal displacement of the first rack, the piston block can reciprocate horizontally in the liquid pumping chamber, thereby continuously pumping the dust reduction liquid into the annular guide box, and the dust reduction liquid is discharged through the annular guide box, and the dust in the air around the measuring position is settled, thereby improving the dust removal effect.

[0018] 5. The present invention sets a circular motion component. During the rotation of the rotating rod, the lifting plate will reciprocate vertically along the reciprocating thread segment, so that different positions of the spiral guide rail will interfere with the guide wheel, driving multiple discharge ports to rotate in the process of discharging dust reduction liquid, and evenly spraying the dust reduction liquid to the surrounding side of the measuring position, thereby performing comprehensive dust reduction treatment on the dust in the air around the measuring position.

[0019] 6. In the process of the present invention driving the rotating rod to rotate by the motor, the anti-interference component can be driven to start working through the gear and the gear ring, and the heat dissipation component can be driven to start working through the incomplete gear and the first rack. The movement of the first rack and the connecting plate in the heat dissipation component respectively drives the dust reduction component and the static electricity removal component to work. Therefore, only one driving source needs to be set to simultaneously complete electromagnetic shielding, dust prevention, heat dissipation, static electricity removal and dust reduction during the loss measurement. The overall linkage of the device is strong, and the loss measurement result of the converter transformer is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a partial structural schematic diagram of the anti-interference component in the present invention; Figure 3 It is a partial structural schematic diagram of the heat dissipation component in the present invention; Figure 4 is a cross-sectional view of the connecting plate in the present invention; Figure 5 It is a partial structural schematic diagram of the dust reduction component in the present invention; Figure 6 yes Figure 5 The enlarged view of point A in the middle; Figure 7 It is a partial structural schematic diagram of the circular motion component in the present invention; Figure 8 It is a work flow chart of the present invention.

[0021] In the figure: 1. measuring platform; 11. measuring device body; 12. converter transformer body; 2. anti-interference component; 21. rotating ring; 22. gear ring; 23. blocking copper rod; 24. rotating rod; 25. gear; 26. motor; 3. heat dissipation component; 31. support plate; 32. support rod; 33. connecting plate; 34. wind plate; 35. transmission component; 351. side plate; 352. semicircular gear plate; 353. U-shaped guide rail; 354. first rack; 355. first spring; 356. incomplete gear; 357. extension rod; 358. second rack; 36. Anti-static component; 361. Cavity; 362. Counterweight; 363. Second spring; 364. Storage box; 365. Liquid inlet channel; 366. Liquid discharge channel; 4. Dust reduction component; 41. Annular guide box; 42. Liquid storage box; 43. Liquid extraction chamber; 44. Piston block; 45. Connecting rod; 46. Liquid extraction hose; 47. Liquid discharge hose; 5. Circular motion component; 51. Reciprocating threaded section; 52. Lifting plate; 53. U-shaped limit plate; 54. Guide wheel; 55. Guide ring; 56. Torsion spring; 57. Liquid discharge port; 58. Spiral guide rail. DETAILED DESCRIPTION

[0022] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0023] Example: Refer to Figures 1 to 8 , a converter transformer loss measurement device, comprising: A measuring platform 1, a measuring device body 11 is fixedly connected to the upper end of the measuring platform 1, a converter transformer body 12 is placed on the upper end of the measuring platform 1, and an electrical terminal of the converter transformer body 12 is connected to the measuring device body 11; The anti-interference component 2 is used to reduce external electromagnetic interference while preventing dust from entering the measuring position. The anti-interference component 2 includes a rotating ring 21 rotatably connected to the upper end of the measuring platform 1, a gear ring 22 is fixedly connected to the rotating ring 21, and a plurality of blocking copper rods 23 distributed in a circumferential array are fixedly connected to the upper end of the rotating ring 21. A rotating rod 24 is rotatably connected to the upper end of the measuring platform 1, and a gear 25 meshing with the gear ring 22 is fixedly connected to the rotating rod 24. A motor 26 for driving the rotating rod 24 is fixedly connected to the lower end of the measuring platform 1; In view of the problem that the prior art cannot shield external electromagnetic interference, resulting in external electromagnetic interference affecting the loss measuring instrument through radiation or coupling, and at the same time, dust in the external air easily causes poor electrical contact or short circuit of the equipment when entering the measuring position, the present invention sets an anti-interference component 2. During measurement, the motor 26 is turned on to drive the rotating rod 24 to rotate, and then the rotating ring 21 is driven to rotate through the gear 25 and the gear ring 22, so that the multiple blocking copper rods 23 on the rotating ring 21 rotate. The low magnetic permeability of the blocking copper rods 23 enables them to effectively isolate the external magnetic field and reduce the influence of external electromagnetic interference on the measurement results. The rotating blocking copper rods 23 can form a relatively closed measurement environment, so that when the surrounding air enters the measurement position, impurities such as dust in the air are blocked outside the measurement position by the rotating blocking copper rods 23, so as to prevent dust from entering the measurement position, prevent poor electrical contact or short circuit of the equipment, and further improve the measurement accuracy.

[0024] The heat dissipation component 3 is used to accelerate the air flow during measurement to avoid errors in loss measurement due to excessive temperature.

[0025] The heat dissipation assembly 3 includes two support plates 31 fixedly connected to the upper end of the measuring platform 1, a support rod 32 is rotatably connected between the two support plates 31, a connecting plate 33 is fixedly connected to the support rod 32, and a wind plate 34 is fixedly connected to the upper end of the connecting plate 33. A transmission component 35 is provided between the support rod 32 and the rotating rod 24, which is used to drive the heat dissipation assembly 3 to operate synchronously while the anti-interference assembly 2 is working, saving the driving source to reduce the measurement energy consumption, and a static electricity removal component 36 is provided in the connecting plate 33, which is used to reduce static electricity accumulation while dissipating heat to ensure the stability of the measurement environment.

[0026] The transmission component 35 includes a side plate 351 fixedly connected to the upper end of the measuring platform 1, one end of the support rod 32 extends to the outside of the support plate 31 and is fixedly connected to a semicircular tooth plate 352, a U-shaped guide rail 353 is fixedly connected to the side wall of the side plate 351, a first rack 354 is slidably connected in the U-shaped guide rail 353, a first spring 355 is provided between the first rack 354 and the inner wall of the U-shaped guide rail 353, an incomplete gear 356 meshing with the first rack 354 is fixedly connected to the top of the rotating rod 24, an extension rod 357 is fixedly connected to the first rack 354, and an end of the extension rod 357 away from the first rack 354 is fixedly connected to a second rack 358 meshing with the semicircular tooth plate 352.

[0027] In order to avoid errors in the measurement results due to excessively high temperature during the measurement process, the present invention sets a heat dissipation component 3. When the rotating rod 24 rotates, the incomplete gear 356 at its upper end will be driven to rotate, thereby intermittently driving the first rack 354 to move in the U-shaped guide rail 353, and under the elastic force of the first spring 355, the first rack 354 is able to perform reciprocating horizontal displacement, and further drives the second rack 358 to perform reciprocating horizontal displacement. Under the action of the semicircular tooth plate 352, the support rod 32 is able to drive the connecting plate 33 and the wind plate 34 to swing back and forth directly above the measuring position, thereby accelerating the air flow speed directly above the measuring position, improving the heat dissipation effect, and avoiding errors in loss measurement caused by excessively high temperature.

[0028] The static electricity removal component 36 includes a cavity 361 opened inside the connecting plate 33, a counterweight block 362 is sealed and slidably connected in the cavity 361, a plurality of second springs 363 distributed in a linear array are arranged between the counterweight block 362 and the inner wall of the cavity 361, a storage box 364 is fixedly connected to the outer wall of the connecting plate 33, and a static electricity eliminating spray is stored in the storage box 364, an inlet channel 365 is connected between the storage box 364 and the space above the counterweight block 362 in the cavity 361, a discharge channel 366 is connected between the space above the counterweight block 362 in the cavity 361 and the outside world, and a first one-way valve is provided in both the inlet channel 365 and the discharge channel 366.

[0029] Specifically, the setting of the first one-way valve ensures that when the counterweight 362 moves back and forth in the cavity 361, the static electricity eliminating spray in the storage box 364 can only be pumped into the space above the counterweight 362 in the cavity 361 through the liquid inlet channel 365, and the static electricity eliminating spray in the space above the counterweight 362 in the cavity 361 can only be pumped out to the measuring position through the liquid discharge channel 366. Since the connecting plate 33 swings back and forth, the static electricity eliminating spray is discharged and dispersed more evenly at the measuring position.

[0030] In order to reduce the static electricity accumulation at the measuring position, the present invention sets a static electricity removal component 36. During the reciprocating swinging of the connecting plate 33, the angle between the counterweight 362 and the cavity 361 is constantly changing, resulting in the force direction between the gravity of the counterweight 362 and the elastic force of the second spring 363 being constantly changing, so that the counterweight 362 can slide back and forth relative to the cavity 361 during the swinging of the connecting plate 33, and then the static electricity eliminating spray in the storage box 364 is continuously pumped into the space above the counterweight 362 in the cavity 361 through the liquid inlet channel 365, and the static electricity eliminating spray in the space above the counterweight 362 in the cavity 361 is continuously pumped out to the measuring position, thereby reducing the static electricity accumulation at the measuring position and ensuring the stability of the test environment.

[0031] A dust reduction component 4 controlled by a transmission component 35 is also provided at the upper end of the measuring platform 1, which is used for performing dust reduction treatment on the air around the measuring position to improve the dust removal effect. The dust reduction component 4 includes an annular guide box 41 fixedly connected to the upper end of the measuring platform 1, a liquid storage tank 42 is fixedly connected to the side wall of the side plate 351, a liquid pumping chamber 43 is opened inside the first rack 354, a piston block 44 is sealingly and slidably connected inside the liquid pumping chamber 43, a connecting rod 45 is fixedly connected between the piston block 44 and the inner wall of the U-shaped guide rail 353, a liquid pumping hose 46 is connected to the liquid storage tank 42 on one side of the space in the liquid pumping chamber 43 away from the connecting rod 45, a liquid discharge hose 47 is connected to the annular guide box 41 on one side of the space in the liquid pumping chamber 43 away from the connecting rod 45, and a second one-way valve is provided in both the liquid pumping hose 46 and the liquid discharge hose 47.

[0032] Specifically, the second one-way valve is arranged so that when the piston block 44 moves back and forth in the pumping chamber 43, the dust suppressing liquid in the liquid storage tank 42 can only be pumped into the space on the side of the pumping chamber 43 away from the connecting rod 45 through the pumping hose 46, and the dust suppressing liquid in the space on the side of the pumping chamber 43 away from the connecting rod 45 can only be pumped out into the annular guide box 41 through the discharge hose 47, so as to avoid the backflow of the dust suppressing liquid and ensure the sedimentation effect of the dust in the air around the measuring position.

[0033] Specifically, the dust suppression liquid in the liquid storage tank 42 can be common water, which reduces costs.

[0034] In order to further prevent poor electrical contact and short circuit of the equipment due to dust, the present invention sets a dust reduction component 4. During the reciprocating horizontal displacement of the first rack 354, the position of the piston block 44 is fixed, and the position of the pumping chamber 43 changes with the first rack 354. Therefore, the piston block 44 can perform reciprocating horizontal displacement in the pumping chamber 43, thereby continuously pumping the dust reduction liquid in the liquid storage tank 42 into the pumping chamber 43 through the pumping hose 46, and continuously pumping the dust reduction liquid in the pumping chamber 43 into the annular guide box 41 through the discharge hose 47. The dust reduction liquid is discharged through the annular guide box 41, and the dust in the air around the measuring position is settled, thereby improving the dust removal effect.

[0035] A circular motion component 5 controlled by a rotating rod 24 is also provided at the upper end of the measuring platform 1, which is used to spray the dust suppression liquid in the annular guide box 41 uniformly to the surrounding side of the measuring position. The circular motion component 5 includes a reciprocating threaded section 51 arranged on the rod body of the rotating rod 24, and a lifting plate 52 is threadedly connected to the reciprocating threaded section 51. A U-shaped limit plate 53 is fixedly connected to the upper end of the measuring platform 1, and the lifting plate 52 is slidably connected to the inner wall of the U-shaped limit plate 53 along the vertical direction. A guide wheel 54 is rotatably connected to the lifting plate 52 through an L-shaped rod. A guide ring 55 is sealingly rotatably connected to the bottom wall of the annular guide box 41. A torsion spring 56 is provided between the guide ring 55 and the inner wall of the annular guide box 41. A plurality of drainage ports 57 are fixedly connected to the guide ring 55, and each drainage port 57 connects the inside of the annular guide box 41 with the outside. A spiral guide rail 58 is fixedly connected to the outer wall of the guide ring 55, and the guide wheel 54 rolls in contact with the bottom end of the spiral guide rail 58.

[0036] In order to further improve the effect of dust reduction treatment, the present invention sets a circular motion component 5. During the rotation of the rotating rod 24, the lifting plate 52 will reciprocate vertically along the reciprocating thread segment 51, so that the guide wheel 54 can reciprocate vertically. The guide wheel 54 with a constantly changing height will make different positions of the spiral guide rail 58 collide with the guide wheel 54, so that the spiral guide rail 58 can drive the guide ring 55 to rotate back and forth, so that the multiple discharge ports 57 can rotate in the process of discharging dust reduction liquid, and the dust reduction liquid is evenly sprayed to the surrounding side of the measuring position, so as to perform comprehensive dust reduction treatment on the dust in the air around the measuring position.

[0037] Specifically, each discharge port 57 and the discharge port of the discharge channel 366 are provided with an atomizing nozzle, through which the static eliminating spray and the dust reducing liquid can be atomized when discharged, avoiding water accumulation on the measuring platform 1 and affecting the measurement results.

[0038] In addition, in the process of the present invention driving the rotating rod 24 to rotate by the motor 26, the anti-interference component 2 can be driven to start working through the gear 25 and the gear ring 22, and the heat dissipation component 3 can be driven to start working through the incomplete gear 356 and the first rack 354. The movement of the first rack 354 and the connecting plate 33 in the heat dissipation component 3 respectively drives the dust reduction component 4 and the static electricity removal component 36 to work. Therefore, only one driving source needs to be set to simultaneously complete electromagnetic shielding, dust prevention, heat dissipation, static electricity removal and dust reduction during the loss measurement process. The overall linkage of the device is strong, and the loss measurement result of the converter transformer is more accurate.

[0039] A measurement method applied to a converter transformer loss measurement device, comprising: S1. Loss measurement: Place the converter transformer body 12 inside the rotating ring 21, connect the measuring device body 11 to the input end (high voltage side) and output end (low voltage side) of the converter transformer body 12, and apply a specific voltage to measure the core loss (also called no-load loss); S2, anti-interference processing: turn on the motor 26, drive the rotating rod 24 to rotate, and then drive the rotating ring 21 to rotate through the gear 25 and the gear ring 22, so that the multiple blocking copper rods 23 on the rotating ring 21 rotate, and the low magnetic permeability of the blocking copper rods 23 enables them to effectively isolate the external magnetic field, and the rotating blocking copper rods 23 can form a relatively closed measurement environment, so that impurities such as dust are blocked outside the measurement position by the rotating blocking copper rods 23; S3, heat dissipation treatment: When the rotating rod 24 rotates, the incomplete gear 356 at its upper end will be driven to rotate, so that the first rack 354 can be reciprocated horizontally, and under the action of the second rack 358 and the semicircular tooth plate 352, the wind plate 34 can reciprocate above the measuring position to accelerate the air flow speed above the measuring position; S4, anti-static treatment: During the reciprocating swing of the connecting plate 33, the angle between the counterweight block 362 and the cavity 361 is constantly changing, so that the counterweight block 362 slides back and forth relative to the cavity 361, thereby continuously pumping the anti-static spray in the storage box 364 to the measuring position, thereby reducing the accumulation of static electricity at the measuring position; S5, dust reduction treatment: during the reciprocating horizontal displacement of the first rack 354, the piston block 44 is able to reciprocate horizontally in the pumping chamber 43, thereby continuously pumping the dust reduction liquid in the liquid storage tank 42 into the annular guide box 41, and the dust reduction liquid is discharged through the annular guide box 41, so as to perform sedimentation treatment on the dust in the air around the measuring position; S6. Uniform liquid discharge processing: During the rotation of the rotating rod 24, the lifting plate 52 will perform reciprocating vertical displacement along the reciprocating thread segment 51, so that different positions of the spiral guide rail 58 will collide with the guide wheel 54, so that the multiple liquid discharge ports 57 can rotate during the process of discharging the dust suppression liquid, and the dust suppression liquid will be evenly sprayed to the surrounding side of the measuring position.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A converter transformer loss measurement device, characterized in that: include: A measuring platform (1), wherein a measuring device body (11) is fixedly connected to the upper end of the measuring platform (1), a converter transformer body (12) is placed on the upper end of the measuring platform (1), and an electrical terminal of the converter transformer body (12) is electrically connected to the measuring device body (11); An anti-interference component (2) is used to reduce external electromagnetic interference while preventing dust from entering the measurement position, the anti-interference component (2) comprising a rotating ring (21) rotatably connected to the upper end of the measurement platform (1), a toothed ring (22) fixedly connected to the rotating ring (21), a plurality of blocking copper rods (23) distributed in a circular array fixedly connected to the upper end of the rotating ring (21), a rotating rod (24) rotatably connected to the upper end of the measurement platform (1), a gear (25) meshing with the toothed ring (22) fixedly connected to the rotating rod (24), and a motor (26) for driving the rotating rod (24) fixedly connected to the lower end of the measurement platform (1); The heat dissipation component (3) is used to accelerate air flow during measurement to avoid errors in loss measurement caused by excessive temperature.

2. The converter transformer loss measuring device according to claim 1, characterized in that: The heat dissipation component (3) comprises two support plates (31) fixedly connected to the upper end of the measuring platform (1); a support rod (32) is rotatably connected between the two support plates (31); a connecting plate (33) is fixedly connected to the support rod (32); a wind plate (34) is fixedly connected to the upper end of the connecting plate (33); a transmission component (35) is provided between the support rod (32) and the rotating rod (24) for driving the heat dissipation component (3) to operate synchronously while the anti-interference component (2) is working; and a static electricity removal component (36) is provided in the connecting plate (33) for reducing static electricity accumulation while dissipating heat to ensure the stability of the measuring environment.

3. The converter transformer loss measuring device according to claim 2, characterized in that: The transmission component (35) comprises a side plate (351) fixedly connected to the upper end of the measuring platform (1); one end of the support rod (32) extends outside the support plate (31) and is fixedly connected to a semicircular toothed plate (352); a U-shaped guide rail (353) is fixedly connected to the side wall of the side plate (351); a first rack (354) is slidably connected inside the U-shaped guide rail (353); a first spring (355) is provided between the first rack (354) and the inner wall of the U-shaped guide rail (353); an incomplete gear (356) meshing with the first rack (354) is fixedly connected to the top end of the rotating rod (24); an extension rod (357) is fixedly connected to the first rack (354); and an end of the extension rod (357) away from the first rack (354) is fixedly connected to a second rack (358) meshing with the semicircular toothed plate (352).

4. The converter transformer loss measuring device according to claim 3, characterized in that: The static electricity removal component (36) comprises a cavity (361) opened inside the connecting plate (33), a counterweight block (362) is sealed and slidably connected inside the cavity (361), a plurality of second springs (363) distributed in a linear array are arranged between the counterweight block (362) and the inner wall of the cavity (361), a storage box (364) is fixedly connected to the outer wall of the connecting plate (33), a static electricity elimination spray is stored in the storage box (364), a liquid inlet channel (365) is connected between the storage box (364) and the space above the counterweight block (362) in the cavity (361), a liquid discharge channel (366) is connected between the space above the counterweight block (362) in the cavity (361) and the outside, and a first one-way valve is arranged in both the liquid inlet channel (365) and the liquid discharge channel (366).

5. The converter transformer loss measuring device according to claim 4, characterized in that: The upper end of the measuring platform (1) is also provided with a dust removal component (4) controlled by a transmission component (35) for performing dust removal treatment on the air around the measuring position to improve the dust removal effect. The dust removal component (4) comprises an annular guide box (41) fixedly connected to the upper end of the measuring platform (1), a liquid storage box (42) fixedly connected to the side wall of the side plate (351), a liquid extraction chamber (43) is provided inside the first rack (354), and the liquid extraction chamber (43) is sealed and slidably connected inside. A piston block (44) is fixedly connected between the piston block (44) and the inner wall of the U-shaped guide rail (353) with a connecting rod (45); a liquid extraction hose (46) is connected between a space on one side of the liquid extraction chamber (43) away from the connecting rod (45) and the liquid storage box (42); a liquid discharge hose (47) is connected between a space on one side of the liquid extraction chamber (43) away from the connecting rod (45) and the annular guide box (41); and a second one-way valve is provided in each of the liquid extraction hose (46) and the liquid discharge hose (47).

6. The converter transformer loss measuring device according to claim 5, characterized in that: The upper end of the measuring platform (1) is also provided with a circular motion component (5) controlled by a rotating rod (24) for spraying dust suppression liquid in the annular guide box (41) uniformly and comprehensively to the periphery of the measuring position. The circular motion component (5) comprises a reciprocating threaded section (51) arranged on the shaft of the rotating rod (24). A reciprocatingly driven lifting plate (52) is sleeved on the reciprocating threaded section (51). A U-shaped limiting plate (53) is fixedly connected to the upper end of the measuring platform (1). The lifting plate (52) is slidably connected to the inner wall of the U-shaped limiting plate (53) in a vertical direction. A guide wheel (54) is rotatably connected to the annular guide box (41) via an L-shaped rod. A guide ring (55) is sealingly rotatably connected to the bottom wall of the annular guide box (41). A torsion spring (56) is provided between the guide ring (55) and the inner wall of the annular guide box (41). A plurality of drainage ports (57) are fixedly connected to the guide ring (55). Each drainage port (57) is connected to the inside of the annular guide box (41) and the outside. A spiral guide rail (58) is fixedly connected to the outer wall of the guide ring (55). The guide wheel (54) rolls in contact with the bottom end of the spiral guide rail (58).

7. The converter transformer loss measuring device according to claim 6, characterized in that: Each of the liquid discharge ports (57) and the liquid discharge channel (366) is provided with an atomizing nozzle at its discharge port.

8. A measurement method applied to the converter transformer loss measurement device according to claim 7, characterized in that: include: S1. Loss measurement: placing the converter transformer body (12) inside the rotating ring (21), connecting the measuring device body (11) to the input and output ends of the converter transformer body (12), and applying a specific voltage to measure the core loss; S2, anti-interference processing: start the motor (26), drive the rotating rod (24) to rotate, and then drive the rotating ring (21) to rotate through the gear (25) and the gear ring (22), so that the multiple blocking copper rods (23) on the rotating ring (21) rotate, and the low magnetic permeability of the blocking copper rods (23) enables them to effectively isolate the external magnetic field, and the rotating blocking copper rods (23) can form a relatively closed measurement environment, so that dust and other impurities are blocked outside the measurement position by the rotating blocking copper rods (23); S3, heat dissipation treatment: When the rotating rod (24) rotates, the incomplete gear (356) at its upper end is driven to rotate, so that the first rack (354) can be reciprocated horizontally, and under the action of the second rack (358) and the semicircular tooth plate (352), the air plate (34) can reciprocate above the measuring position, thereby accelerating the air flow speed at the position above the measuring position; S4, anti-static treatment: during the reciprocating swing of the connecting plate (33), the angle between the counterweight (362) and the cavity (361) is constantly changing, so that the counterweight (362) slides reciprocatingly relative to the cavity (361), thereby continuously pumping the anti-static spray in the storage box (364) to the measuring position, thereby reducing the accumulation of static electricity at the measuring position; S5, dust reduction treatment: during the reciprocating horizontal displacement of the first rack (354), the piston block (44) is able to reciprocate horizontally in the liquid pumping chamber (43), thereby continuously pumping the dust reduction liquid in the liquid storage tank (42) into the annular guide box (41), and the dust reduction liquid is discharged through the annular guide box (41), thereby performing a sedimentation treatment on the dust in the air around the measuring position; S6. Uniform liquid discharge processing: During the rotation of the rotating rod (24), the lifting plate (52) will reciprocate vertically along the reciprocating thread section (51), so that different positions of the spiral guide rail (58) will collide with the guide wheel (54), so that the multiple liquid discharge ports (57) can rotate during the process of discharging the dust suppression liquid, and the dust suppression liquid is evenly sprayed to the surrounding side of the measurement position.

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