Transformer partial discharge detection device

Abstract

The invention discloses a transformer partial discharge detection device, and aims to solve the problems that the monitoring data is not comprehensive and the generation of the transformer partial discharge cannot be found in time due to few modes for monitoring the transformer partial discharge at present. According to the transformer partial discharge detection device, a non-contact detection assembly is arranged on one side of a detector body, a contact detection assembly and a communication assembly are arranged on the upper surface of the detector body, and two electric field sensors are connected with a controller through connecting wires. A supporting rod in the contact detection assembly is vertically fixed to the top of the detector body, a hinge seat is installed on the top of the supporting rod, a drawing rod is arranged in a drawing ring in a sleeved mode, a current conducting rod is arranged at one end of the drawing rod, and a current sensor is arranged on the current conducting rod. Through the non-contact detection assembly and the contact detection assembly, two different transformer partial discharge detection modes are realized, and the accuracy of monitoring data can be improved.

Description

Technical Field

[0001] The invention belongs to the field of transformer discharge detection, and in particular relates to a transformer partial discharge detection device. Background Art

[0002] Power transformers are key equipment in power systems. The reliability of their operation is directly related to the safety and stability of the power system. Insulation failure is the main reason affecting the normal operation of transformers, and partial discharge is an important cause of insulation failure.

[0003] After searching, in the prior art, the Chinese patent with patent announcement number CN208607312U discloses "a transformer partial discharge detection device". This invention proposes a transformer partial discharge detection device, which is connected to the transformer through the metal probe connection end at the upper end of the detector, and can detect whether partial discharge occurs. The signal generator transmits the change signal 1 to the partial discharge detector connected thereto for signal detection. If partial discharge occurs, the signal 3 after the partial discharge detector comes out can be analyzed after being displayed on the image display. The acoustic wave sensor converts the acoustic wave signal into an electrical signal and transmits it to the image display after filtering and other processing. The specific location of the partial discharge can be detected and analyzed based on the image, thereby determining the specific partial discharge situation of the transformer. However, the following defects still exist:

[0004] (1) There are few ways to monitor partial discharge of transformers in actual use, resulting in incomplete monitoring data and failure to timely detect the occurrence of partial discharge of transformers, which poses certain safety hazards;

[0005] (2) When partial discharge of the transformer occurs during actual use, the partial discharge information of the transformer cannot be transmitted to the monitoring center or the operator's terminal in time, resulting in the inability to repair the partial discharge fault of the transformer in time. Summary of the invention

[0006] The present invention aims to provide a transformer partial discharge detection device in view of the fact that there are few existing methods for monitoring transformer partial discharge, resulting in incomplete monitoring data, failure to timely discover the occurrence of transformer partial discharge, and certain safety hazards. When transformer partial discharge occurs, the transformer partial discharge information cannot be transmitted to the monitoring center or the operator's terminal in time, resulting in the transformer partial discharge fault cannot be repaired in time.

[0007] The transformer partial discharge detection device of the present invention comprises a detector body, a non-contact detection component, a contact detection component and a communication component, wherein the non-contact detection component is arranged on one side of the detector body, and the contact detection component and the communication component are arranged on the upper surface of the detector body;

[0008] The non-contact detection component includes a display, a controller, a connecting line and an electric field sensor. The display and the controller are arranged on one side of the detector body, and the two electric field sensors are connected to the controller through connecting lines respectively.

[0009] The contact detection assembly includes a support rod, an articulated seat, a sphere, a pull-out ring, a pull-out rod, a conductive rod and a current sensor. The support rod is vertically fixed on the top of the detector body, the articulated seat is installed on the top of the support rod, the sphere is rotatably connected to the inside of the articulated seat, the pull-out ring is arranged on the sphere, the pull-out rod is sleeved inside the pull-out ring, the conductive rod is arranged at one end of the pull-out rod, and the current sensor is arranged on the conductive rod;

[0010] The partial discharge signals detected by the non-contact detection component and the contact detection component are transmitted through the communication component.

[0011] The transformer partial discharge detection device of the present invention has the following beneficial effects:

[0012] 1. By setting up non-contact detection components and contact detection components, two different transformer partial discharge detection methods are realized, which can improve the accuracy of monitoring data and timely detect the occurrence of transformer partial discharge. This solves the problem that there are few methods for transformer partial discharge monitoring in the existing technology, resulting in incomplete monitoring data, failure to timely detect the occurrence of transformer partial discharge, and certain safety hazards.

[0013] 2. Through the communication components set up, the information on the abnormal status of partial discharge of the transformer is transmitted to the monitoring center or the operator's terminal in time, which solves the problem in the prior art that when partial discharge of the transformer occurs, the partial discharge information of the transformer cannot be transmitted to the monitoring center or the operator's terminal in time, resulting in the inability to repair the partial discharge fault of the transformer in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a transformer partial discharge detection device of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure of the non-contact detection component of the transformer partial discharge detection device of the present invention;

[0016] Figure 3 It is a schematic diagram of the structure of the visual alarm of the transformer partial discharge detection device of the present invention;

[0017] Figure 4 It is a schematic diagram of the structure of the contact detection component of the transformer partial discharge detection device of the present invention;

[0018] Figure 5It is a schematic diagram of the structure of the height adjustment component of the transformer partial discharge detection device of the present invention;

[0019] Figure 6 It is a schematic diagram of the use process of the transformer partial discharge detection device of the present invention;

[0020] Indicated in the figure:

[0021] 1—detector body; 2—non-contact detection component; 3—contact detection component; 4—communication component; 5—height adjustment component; 201—display; 202—controller; 203—connecting line; 204—electric field sensor; 205—data collector; 301—support rod; 302—hinge seat; 303—sphere; 304—pull ring; 305—pull rod; 306—conductive rod; 307—current sensor; 401—signal transmitter; 402—signal enhancement antenna; 501—adjustment tube; 502—adjustment nut; 503—support leg; 6—filter; 7—flashing warning light; 8—extension block; 9—visual alarm; 10—sound alarm. DETAILED DESCRIPTION

[0022] Specific implementation method 1: The transformer partial discharge detection device of this implementation method includes a detector body 1, a non-contact detection component 2, a contact detection component 3 and a communication component 4. The non-contact detection component 2 is arranged on one side of the detector body 1, and the contact detection component 3 and the communication component 4 are arranged on the upper surface of the detector body 1;

[0023] The non-contact detection component 2 includes a display 201, a controller 202, a connecting line 203 and an electric field sensor 204. The display 201 and the controller 202 are arranged on one side of the detector body 1. The two electric field sensors 204 are connected to the controller 202 through the connecting lines 203 respectively.

[0024] The contact detection assembly 3 includes a support rod 301, an articulated seat 302, a sphere 303, a pull ring 304, a pull rod 305, a conductive rod 306 and a current sensor 307. The support rod 301 is vertically fixed to the top of the detector body 1, the articulated seat 302 is installed on the top of the support rod 301, the sphere 303 is rotatably connected to the inside of the articulated seat 302, the pull ring 304 is arranged on the sphere 303, the pull rod 305 is sleeved inside the pull ring 304, the conductive rod 306 is arranged at one end of the pull rod 305, and the current sensor 307 is arranged on the conductive rod 306;

[0025] The partial discharge signals detected by the non-contact detection component 2 and the contact detection component 3 are transmitted through the communication component 4 .

[0026] Specific implementation method 2: The difference between this implementation method and specific implementation method 1 is that two electric field sensors 204 are located on the left and right sides of the detector body 1 .

[0027] Specific implementation method three: This implementation method is different from specific implementation methods one or two in that a flashing warning light 7 is provided on the current sensor 307 .

[0028] In this embodiment, the flashing warning light 7 is used in conjunction with the conductive rod 306 , and the flashing warning light 7 can flash when the conductive rod 306 is conducting electricity to alert the staff.

[0029] Specific embodiment 4: This embodiment is different from specific embodiments 1 to 3 in that an extension block 8 is further provided on one side of the detector body 1 , and a visual alarm 9 and an audible alarm 10 are installed on the extension block 8 .

[0030] In this embodiment, the visual alarm 9 and the sound alarm 10 can sound an alarm when the detector body 1 detects partial discharge of the transformer to alert the staff.

[0031] Specific embodiment 5: This embodiment is different from specific embodiments 1 to 4 in that a height adjustment component 5 is provided at the bottom of the detector body 1 .

[0032] Specific embodiment six: The difference between this embodiment and specific embodiment five is that the height adjustment assembly 5 includes an adjustment cylinder 501, an adjustment nut 502 and a support leg 503, and multiple adjustment cylinders 501 are fixedly connected to the bottom of the detector body 1, and the support leg 503 is sleeved in the adjustment cylinder 501, and the adjustment nut 502 is threadedly connected to the support leg 503.

[0033] Embodiment: The transformer partial discharge detection device of this embodiment includes a detector body 1, a non-contact detection component 2, a contact detection component 3 and a communication component 4. The non-contact detection component 2 is arranged on one side of the detector body 1, and the contact detection component 3 and the communication component 4 are arranged on the upper surface of the detector body 1. An extension block 8 is also arranged on one side of the detector body 1, and a visual alarm 9 and an audio alarm 10 are installed on the extension block 8. A filter 6 for preventing signal interference is arranged on the top of the detector body 1;

[0034] The non-contact detection component 2 includes a display 201, a controller 202, a connecting line 203, an electric field sensor 204 and a data collector 205. The display 201 and the controller 202 are arranged on one side of the detector body 1. The two electric field sensors 204 are connected to the controller 202 through the connecting line 203 respectively; the data collector 205 is arranged on the top of the detector body 1 and is used in conjunction with the electric field sensor 204 and the detector body 1;

[0035] The contact detection assembly 3 includes a support rod 301, an articulated seat 302, a sphere 303, a pull ring 304, a pull rod 305, a conductive rod 306 and a current sensor 307. The support rod 301 is vertically fixed on the top of the detector body 1, the articulated seat 302 is installed on the top of the support rod 301, the sphere 303 is rotatably connected to the inside of the articulated seat 302, the pull ring 304 is arranged on the sphere 303, the pull rod 305 is sleeved inside the pull ring 304, the conductive rod 306 is arranged at one end of the pull rod 305, the current sensor 307 is arranged on the conductive rod 306, and a flashing warning light 7 is arranged on the current sensor 307;

[0036] The partial discharge signals detected by the non-contact detection component 2 and the contact detection component 3 are transmitted through the communication component 4 .

[0037] The communication component 4 of this embodiment includes a signal transmitter 401 and a signal enhancement antenna 402 . The signal transmitter 401 is arranged on the top of the detector body 1 , and the signal enhancement antenna 402 is arranged on one side of the signal transmitter 401 and used in conjunction with the signal transmitter 401 .

[0038] When the transformer partial discharge detection device of this embodiment is used: the electric field sensor 204 is placed at a position where partial discharge is likely to occur in the transformer to detect the change in the electric field strength inside the transformer, and then the pull rod 305 is pulled to control the conductive rod 306 to contact the transformer itself, and the conductive property of the conductive rod 306 is used to enable the current sensor 307 to monitor the current of the transformer locally. The data detected by the current sensor 307 and the electric field sensor 204 will be collected by the data collector 205 and transmitted to the detector body 1 for data analysis, and then the specific situation of the transformer partial discharge will be displayed through the display 201 When the detector body 1 detects partial discharge of the transformer, the signal transmitter 401 will transmit the monitored data to the monitoring center or the operator's terminal through the Internet of Things to achieve remote monitoring and remote diagnosis. Turning the adjusting nut 502 can drive the supporting leg 503 to slide and rise inside the adjusting cylinder 501, thereby adjusting the height of the detector body 1 for easy use. The flashing warning light 7 can flash when the conductive rod 306 is conducting, reminding the staff to stay away. The visual alarm 9 and the sound alarm 10 can sound an alarm when the detector body 1 detects partial discharge of the transformer to warn the staff.

Claims

1. A transformer partial discharge detection device, characterized in that The transformer partial discharge detection device comprises a detector body (1), a non-contact detection component (2), a contact detection component (3) and a communication component (4); the non-contact detection component (2) is arranged on one side of the detector body (1), and the contact detection component (3) and the communication component (4) are arranged on the upper surface of the detector body (1); The non-contact detection component (2) comprises a display (201), a controller (202), a connecting line (203), an electric field sensor (204) and a data collector (205); the display (201) and the controller (202) are arranged on one side of the detector body (1); and the two electric field sensors (204) are connected to the controller (202) via the connecting lines (203) respectively; The contact detection component (3) comprises a support rod (301), an articulated seat (302), a sphere (303), a pull-out ring (304), a pull-out rod (305), a conductive rod (306) and a current sensor (307), wherein the support rod (301) is vertically fixed on the top of the detector body (1), the articulated seat (302) is installed on the top of the support rod (301), the sphere (303) is rotatably connected to the inside of the articulated seat (302), the pull-out ring (304) is arranged on the sphere (303), the pull-out rod (305) is sleeved inside the pull-out ring (304), the conductive rod (306) is arranged at one end of the pull-out rod (305), and the current sensor (307) is arranged on the conductive rod (306); The local discharge signals detected by the non-contact detection component (2) and the contact detection component (3) are transmitted via the communication component (4).

2. The transformer partial discharge detection device according to claim 1 is characterized in that The two electric field sensors (204) are located on the left and right sides of the detector body (1).

3. The transformer partial discharge detection device according to claim 1 is characterized in that A flashing warning light (7) is provided on the current sensor (307).

4. The transformer partial discharge detection device according to claim 1, characterized in that An extension block (8) is also provided on one side of the detector body (1), and a visual alarm (9) and an audible alarm (10) are mounted on the extension block (8).

5. The transformer partial discharge detection device according to claim 1, characterized in that A height adjustment component (5) is arranged at the bottom of the detector body (1).

6. The transformer partial discharge detection device according to claim 5, characterized in that The height adjustment assembly 5 comprises an adjustment cylinder (501), an adjustment nut (502) and a support leg (503); a plurality of the adjustment cylinders (501) are fixedly connected to the bottom of the detector body (1); the support leg (503) is sleeved in the adjustment cylinder (501); and the adjustment nut (502) is threadedly connected to the support leg (503).

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