Switchgear with partial discharge detection

Abstract

The utility model relates to the technical field of switch cabinet, and disclose a switch cabinet with partial discharge detection, including the cabinet, the side of cabinet is provided with a plurality of ultrasonic sensors, the position of ultrasonic sensor on cabinet is installed with mounting mechanism, the side of cabinet is provided with signal processing mechanism and display screen, between ultrasonic sensor and signal processing mechanism be connected with first cable, between signal processing mechanism and display screen be connected with second cable, first cable and second cable all adopt shielded wire, this switch cabinet with partial discharge detection is set up through a plurality of ultrasonic sensors corresponding cabinet key parts, need not to carry detection equipment extra, can capture partial discharge signal in real time, and display screen shows data directly, solve the prior art detection operation cumbersome, cannot real -time monitoring's problem, improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, specifically to a switchgear with partial discharge detection. Background Technology

[0002] As the core equipment for power distribution, control, and protection in power systems, the internal insulation performance of switchgear directly affects the stable operation of the power system. Partial discharge is an early sign of insulation aging and damage in switchgear. If it is not detected in time, it will continue to corrode the insulating components, eventually leading to short circuits, equipment burnout, or even large-scale power outages.

[0003] Current technologies for partial discharge detection in switchgear require personnel to bring equipment to the site and inspect each switchgear unit individually, which cannot achieve real-time monitoring, has low detection efficiency, and is difficult to adapt to the batch maintenance needs of multiple switchgear units. Utility Model Content

[0004] This invention provides a switch cabinet with partial discharge detection, which has the advantage of convenient detection and solves the problem of inconvenient detection mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a switch cabinet with partial discharge detection, comprising a cabinet body, a plurality of ultrasonic sensors being arranged on the side of the cabinet body, an installation mechanism being installed on the cabinet body relative to the position of the ultrasonic sensors, a signal processing mechanism and a display screen being arranged on the side of the cabinet body, a first cable connecting the ultrasonic sensors and the signal processing mechanism, and a second cable connecting the signal processing mechanism and the display screen, wherein both the first cable and the second cable are shielded cables.

[0006] As an optional solution of this utility model, the installation mechanism includes a mounting base fixedly installed on the side of the cabinet, and a fixing base used in conjunction with the mounting base. The ultrasonic sensor is installed on the inner side of the mounting base and the fixing base, and the mounting base and the fixing base are detachably connected by bolts.

[0007] As an optional solution of this utility model, a guide block is fixedly installed at the bottom of the fixed base, and a guide groove is provided on the mounting base relative to the position of the guide block.

[0008] As an optional solution of this utility model, the inner walls of both the mounting base and the fixing base are bonded with protective pads, which are rubber pads.

[0009] As an optional solution of this utility model, a limiting plate is fixedly installed on the side of the mounting base, and a wire-passing groove adapted to the first cable is opened on the side of the limiting plate.

[0010] As an optional solution of this utility model, the signal processing mechanism includes a data box fixedly installed on the side of the cabinet, a lithium battery and a signal processing board are installed inside the data box, and a switch is installed on the side of the data box.

[0011] As an optional solution of this utility model, a charging slot is provided on the surface of the data box, and a status indicator light is provided on the data box.

[0012] As an optional solution of this utility model, a wiring board is fixedly installed on the surface of the cabinet relative to the position of the first cable, and a wiring groove is opened on the surface of the wiring board, and the first cable is bonded to the inside of the wiring groove.

[0013] This utility model has the following beneficial effects: 1. This switch cabinet with partial discharge detection uses multiple ultrasonic sensors installed at key parts of the cabinet, eliminating the need for additional detection equipment. It can capture partial discharge signals in real time, and the display screen shows the data intuitively. This solves the problems of cumbersome detection operations and inability to monitor in real time in existing technologies, thus improving detection efficiency.

[0014] 2. The switch cabinet with partial discharge detection uses shielded wires for both the first and second cables, and is neatly arranged through cable trays and wiring channels, which effectively resists electromagnetic interference, avoids cable damage or loosening of interfaces, solves the problem of signal transmission being easily interfered with in existing technologies, and improves detection accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is an exploded view of the installation mechanism of this utility model.

[0017] Figure 3 This is an exploded view of the signal processing mechanism of this utility model.

[0018] Figure 4 This is a schematic diagram of the wiring board structure of this utility model.

[0019] In the diagram: 1. Cabinet; 2. Ultrasonic sensor; 3. Mounting mechanism; 4. Signal processing mechanism; 5. Display screen; 6. First cable; 7. Second cable; 8. Wiring board; 9. Cable tray; 32. Mounting base; 33. Fixing base; 34. Bolt; 35. Guide block; 36. Guide groove; 37. Protective pad; 38. Limiting plate; 39. Cable tray; 41. Data box; 42. Lithium battery; 43. Signal processing board; 44. Switch; 45. Charging slot. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] Please see Figure 1-4 A switch cabinet with partial discharge detection includes a cabinet body 1, multiple ultrasonic sensors 2 are arranged on the side of the cabinet body 1, an installation mechanism 3 is installed on the cabinet body 1 relative to the ultrasonic sensors 2, a signal processing mechanism 4 and a display screen 5 are arranged on the side of the cabinet body 1, a first cable 6 is connected between the ultrasonic sensors 2 and the signal processing mechanism 4, and a second cable 7 is connected between the signal processing mechanism 4 and the display screen 5. Both the first cable 6 and the second cable 7 are shielded cables. It should also be noted that multiple ultrasonic sensors 2 are installed at critical insulation points of the busbars or circuit breakers inside cabinet 1.

[0023] Specifically, cabinet 1 provides the installation base for the detection components. Multiple ultrasonic sensors 2 are installed corresponding to key insulated parts such as busbars and circuit breakers inside the cabinet, which can comprehensively capture ultrasonic signals generated by partial discharge. The first cable 6 transmits the electrical signals collected by the sensors to the signal processing mechanism 4, and the second cable 7 transmits the processed signals to the display screen 5 for staff to view. The use of shielded cables can effectively resist electromagnetic interference generated by the operation of the switch cabinet, ensure stable signal transmission, and avoid data distortion.

[0024] Preferably, the mounting mechanism 3 includes a mounting base 31 fixedly mounted on the side of the cabinet 1, and a fixing base 32 used in conjunction with the mounting base 31. The ultrasonic sensor 2 is mounted on the inner side of the mounting base 31 and the fixing base 32. The mounting base 31 and the fixing base 32 are detachably connected by bolts 33. The mounting base 31 is fixed to the side of the cabinet 1 to provide an installation reference for the ultrasonic sensor 2. The fixing base 32 cooperates with the mounting base 31 to form a clamping space, fixing the ultrasonic sensor 2 in a preset position and ensuring that the sensor detection end is tightly attached to the outer wall of the cabinet 1. The bolts 33 enable the detachable connection between the mounting base 31 and the fixing base 32. When the sensor is maintained or replaced in the future, only the bolts need to be removed to take out the sensor, without disassembling or modifying the cabinet structure, making the operation convenient.

[0025] Furthermore, a guide block 34 is fixedly installed at the bottom of the fixed base 32, and a guide groove 35 is provided on the mounting base 31 at a position relative to the guide block 34. When installing the fixed base 32, the guide block 34 is embedded in the guide groove 35, which plays a positioning and guiding role, ensuring that the fixed base 32 and the mounting base 31 are accurately connected, avoiding the ultrasonic sensor 2 from not fitting tightly due to installation deviation, which would affect the signal capture effect, and at the same time improving the installation efficiency.

[0026] The inner walls of the mounting base 31 and the fixing base 32 are both bonded with protective pads 36, which are rubber pads. The rubber protective pads 36 are attached to the side walls of the ultrasonic sensor 2. On the one hand, they can fill the gap between the sensor and the mounting base 31 and the fixing base 32, enhance the fit between the sensor and the cabinet 1, and improve the ultrasonic signal transmission efficiency. On the other hand, they can buffer the vibration generated during transportation or operation of the switch cabinet, prevent the sensor from being damaged by collision, and extend its service life.

[0027] It should also be noted that a limiting plate 37 is fixedly installed on the side of the mounting base 31. The limiting plate 37 has a wire groove 38 that is compatible with the first cable 6 on its side. The wire groove 38 on the limiting plate 37 provides a limiting channel for the first cable 6, which can prevent the interface of the first cable 6 from becoming loose or the cable from being damaged due to pulling or bending. At the same time, it can straighten the cable route and provide convenience for subsequent cable maintenance.

[0028] Preferably, the signal processing mechanism 4 includes a data box 41 fixedly installed on the side of the cabinet 1. The data box 41 contains a lithium battery 42 and a signal processing board 43. A switch 44 is installed on the side of the data box 41. The data box 41 provides a protective shell for the internal components. The lithium battery 42 provides independent power to the ultrasonic sensor 2 and the signal processing board 43, eliminating the need for an external power supply and improving the flexibility of on-site deployment. The signal processing board 43 amplifies, filters, and performs analog-to-digital conversion on the raw electrical signals transmitted by the sensor, converting them into recognizable digital signals. The switch 44 is used to control the start and stop of the detection system, allowing staff to turn the detection function on or off as needed.

[0029] Furthermore, a charging slot 45 is provided on the surface of the data box 41, and a status indicator light is provided on the data box 41; the charging slot 45 is used to connect to the charging equipment to replenish the lithium battery 42 and ensure that the detection system works continuously and stably; the status indicator light provides feedback on the operating status of the detection system through different colors or flashing frequencies, such as power on, normal signal transmission, sensor failure, etc., so that the staff can quickly judge whether the system is normal and deal with abnormal situations in a timely manner.

[0030] Preferably, a wiring board 8 is fixedly installed on the surface of the cabinet 1 relative to the position of the first cable 6. The surface of the wiring board 8 has a cable routing groove 9, and the first cable 6 is bonded to the inside of the cable routing groove 9. The cable routing groove 9 on the wiring board 8 provides a neat installation space for the first cable 6. Bonding and fixing the first cable 6 in the cable routing groove 9 can avoid the cable from being messy and tangled, and prevent the cable from being damaged by external force. At the same time, it makes the cable layout neat, facilitates the staff to check cable faults, and improves the operation and maintenance efficiency.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A switch cabinet with partial discharge detection, comprising a cabinet body (1), characterized in that: Multiple ultrasonic sensors (2) are provided on the side of the cabinet (1). An installation mechanism (3) is installed on the cabinet (1) at a position relative to the ultrasonic sensors (2). A signal processing mechanism (4) and a display screen (5) are provided on the side of the cabinet (1). A first cable (6) is connected between the ultrasonic sensors (2) and the signal processing mechanism (4). A second cable (7) is connected between the signal processing mechanism (4) and the display screen (5). Both the first cable (6) and the second cable (7) are shielded cables.

2. The switchgear with partial discharge detection according to claim 1, characterized in that: The installation mechanism (3) includes a mounting base (31) fixedly installed on the side of the cabinet (1) and a fixing base (32) used in conjunction with the mounting base (31). The ultrasonic sensor (2) is installed on the inner side of the mounting base (31) and the fixing base (32). The mounting base (31) and the fixing base (32) are detachably connected by bolts (33).

3. The switchgear with partial discharge detection according to claim 2, characterized in that: A guide block (34) is fixedly installed at the bottom of the fixed base (32), and a guide groove (35) is provided on the mounting base (31) at a position relative to the guide block (34).

4. The switchgear with partial discharge detection according to claim 2, characterized in that: The inner walls of both the mounting base (31) and the fixing base (32) are bonded with protective pads (36), which are rubber pads.

5. The switchgear with partial discharge detection according to claim 2, characterized in that: A limiting plate (37) is fixedly installed on the side of the mounting base (31), and a wire groove (38) adapted to the first cable (6) is provided on the side of the limiting plate (37).

6. The switchgear with partial discharge detection according to claim 1, characterized in that: The signal processing mechanism (4) includes a data box (41) fixedly installed on the side of the cabinet (1). The data box (41) contains a lithium battery (42) and a signal processing board (43). A switch (44) is installed on the side of the data box (41).

7. The switchgear with partial discharge detection according to claim 6, characterized in that: The data box (41) has a charging slot (45) on its surface and a status indicator light on its surface.

8. The switchgear with partial discharge detection according to claim 1, characterized in that: A wiring board (8) is fixedly installed on the surface of the cabinet (1) relative to the position of the first cable (6). A wiring groove (9) is opened on the surface of the wiring board (8), and the first cable (6) is bonded to the inside of the wiring groove (9).

Images