Switch cabinet testing device

Abstract

The utility model belongs to the technical field of switch cabinet testing, and discloses a switch cabinet testing device. The switch cabinet testing device comprises a box body, and a power supply module, a three-station controller and a circuit breaker controller which are arranged in the box body. Wherein the power supply module is provided with a first power transmission terminal, a second power transmission terminal, a third power transmission terminal and a fourth power transmission terminal, the third power transmission terminal is used for being electrically connected with a to-be-tested three-station mechanism, and the fourth power transmission terminal is used for being electrically connected with a to-be-tested circuit breaker. The three-station controller is provided with a first power connection terminal and a first control terminal, the first power connection terminal is connected with the first power transmission terminal, and the first control terminal is used for being in communication connection with a to-be-tested three-station mechanism. The circuit breaker controller is provided with a second power connection terminal and a second control terminal, the second power connection terminal is connected with the second power transmission terminal, and the second control terminal is used for being in communication connection with the circuit breaker to be tested. The switch cabinet testing device independently realizes power supply and testing of the vacuum circuit breaker and the three-station mechanism, and interference to a master control room is avoided.

Description

Technical Field

[0001] This utility model relates to the field of switchgear testing technology, and in particular to a switchgear testing device. Background Technology

[0002] High-voltage switchgear plays an important role in power systems, including control, protection, and monitoring.

[0003] The high-voltage switchgear contains a control module, a vacuum circuit breaker, and a three-position mechanism. Both the vacuum circuit breaker and the three-position mechanism are connected to the control module, which in turn is remotely connected to the central control console. During production operation, the central control console controls and monitors the status of the vacuum circuit breaker and the three-position mechanism through the control module.

[0004] During on-site installation and maintenance, it is necessary to test parameters such as opening and closing time, synchronicity, and speed of vacuum circuit breakers and three-position mechanisms in high-voltage switchgear. Repeated tests of vacuum circuit breakers and three-position mechanisms are performed through the control module. This testing process is transmitted to the central control room through the control module, causing the central control room to repeatedly prompt and alarm, thus interfering with the central control room's monitoring. Utility Model Content

[0005] The purpose of this invention is to provide a switchgear testing device that independently enables the power supply and testing of vacuum circuit breakers and three-position mechanisms, avoiding interference with the central control room.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The switchgear testing device includes a housing and a power module, a three-position controller, and a circuit breaker controller housed within the housing.

[0008] The power module is provided with a first power transmission terminal, a second power transmission terminal, a third power transmission terminal and a fourth power transmission terminal. The third power transmission terminal is used to electrically connect to the three-station mechanism under test, and the fourth power transmission terminal is used to electrically connect to the circuit breaker under test.

[0009] The three-station controller is provided with a first power terminal and a first control terminal. The first power terminal is connected to the first power transmission terminal, and the first control terminal is used for communication connection to the three-station mechanism under test.

[0010] The circuit breaker controller is provided with a second power connection terminal and a second control terminal. The second power connection terminal is connected to the second power transmission terminal, and the second control terminal is used for communication connection to the circuit breaker under test.

[0011] Optionally, the power supply module includes an alternating current output module and a rectifying and transforming module. The alternating current output module is electrically connected to the rectifying and transforming module. The first power transmission terminal and the second power transmission terminal are provided on the rectifying and transforming module.

[0012] Optionally, the power supply module further includes a backup battery. The output terminal of the backup battery is electrically connected to the input terminal of the rectifying and transforming module.

[0013] Optionally, the switch cabinet testing device further includes a circuit protection component. The alternating current output module and / or the backup battery are connected to the input terminal of the circuit protection component. The output terminal of the circuit protection component is connected to the rectifying and transforming module.

[0014] Optionally, the circuit protection component includes an air switch.

[0015] Optionally, the third power transmission terminal and the fourth power transmission terminal are provided on the alternating current output module.

[0016] Optionally, an isolating control switch and a grounding control switch are provided on the box wall of the box body. Both the isolating control switch and the grounding control switch are connected to the three-position controller. A circuit breaker control switch is provided on the box wall of the box body. The circuit breaker controller is connected to the circuit breaker control switch.

[0017] Optionally, a status indicator light is provided on the box wall of the box body. The circuit breaker controller is connected to the status indicator light.

[0018] Optionally, a status observation hole is provided on the box wall of the box body. An openable and closable closing plate is provided at the status observation hole. The status observation hole is directly opposite to the three-position controller.

[0019] Optionally, an installation rail is provided on the inner side wall of the box body. The cross-section of the installation rail is in a "U" shape. A through T-shaped groove is provided on the three-position controller. The T-shaped groove is inserted into the installation rail along the length direction of the installation rail.

[0020] Beneficial effects:

[0021] The switchgear testing device provided in this embodiment has a three-position controller and a circuit breaker controller that obtain power from the first and second power transmission terminals on the power module through their respective power connection terminals. The three-position controller and the circuit breaker controller are communicatively connected to the three-position mechanism and the circuit breaker under test (DUT) through control terminals to implement precise control of the DUT and the DUT, and can also collect test data. The third and fourth power transmission terminals on the power module ensure that the testing device can provide stable power to the DUT and the DUT, enabling them to perform actions under control commands. Therefore, during on-site installation and maintenance, the connection between the high-voltage switchgear control module and the vacuum circuit breaker and three-position mechanism can be completely disconnected, allowing this testing device to perform independent power supply and control testing, avoiding interference with the central control room. Attached Figure Description

[0022] Figure 1 This is a front view of the switchgear testing device provided in this embodiment of the utility model;

[0023] Figure 2 This is a diagram showing the internal component layout of the switchgear testing device provided in this embodiment of the utility model;

[0024] Figure 3 This is a side view of the three-station controller and mounting rail provided in this embodiment of the utility model.

[0025] In the picture:

[0026] 11. Enclosure; 12. Carrying handle; 13. Enclosure panel; 14. Isolation control switch; 15. Grounding control switch; 16. Circuit breaker control switch; 17. Status indicator light; 18. Mounting rail;

[0027] 21. AC output module; 22. Rectifier transformer module; 23. Backup battery; 241. First power transmission terminal; 242. Second power transmission terminal;

[0028] 3. Three-position controller; 31. First power terminal; 32. T-slot;

[0029] 4. Circuit breaker controller; 41. Second power connection terminal;

[0030] 5. Air switch. Detailed Implementation

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] like Figure 1-2 As shown, this embodiment provides a switchgear testing device. The switchgear testing device includes a housing 11 and a power module, a three-position controller 3, and a circuit breaker controller 4 disposed within the housing 11.

[0041] The power supply module is equipped with a first power transmission terminal 241, a second power transmission terminal 242, a third power transmission terminal, and a fourth power transmission terminal. The third power transmission terminal is used for electrical connection to the three-station mechanism under test, and the fourth power transmission terminal is used for electrical connection to the circuit breaker under test. The three-station controller 3 is equipped with a first power connection terminal 31 and a first control terminal. The first power connection terminal 31 is connected to the first power transmission terminal 241, and the first control terminal is used for communication connection to the three-station mechanism under test. The circuit breaker controller 4 is equipped with a second power connection terminal 41 and a second control terminal. The second power connection terminal 41 is connected to the second power transmission terminal 242, and the second control terminal is used for communication connection to the circuit breaker under test.

[0042] The three-position controller 3 and the circuit breaker controller 4 obtain power from the first and second power transmission terminals 241 and 242 on the power supply module through their respective power connection terminals. The three-position controller 3 and the circuit breaker controller 4 communicate with the three-position mechanism under test and the circuit breaker under test through their respective control terminals to implement precise control of the three-position mechanism under test and the circuit breaker under test, and can also collect test data. The third and fourth power transmission terminals on the power supply module ensure that this testing device can provide stable power to the three-position mechanism under test and the circuit breaker under test, enabling them to perform actions under control commands. Therefore, in the case of on-site installation and maintenance, the connection between the control module of the high-voltage switchgear and the circuit breaker under test and the three-position mechanism under test can be completely disconnected, allowing this testing device to independently power and control the test, avoiding interference with the central control room.

[0043] The switchgear testing device integrates the power module, three-position controller 3 and circuit breaker controller 4 into the enclosure 11, achieving integration and facilitating independent testing of the vacuum circuit breaker and three-position mechanism of the switchgear, avoiding interference from the switchgear's own controller in the main control room; moreover, its integration into the enclosure 11 makes it easy to carry.

[0044] In this embodiment, the box 11 includes a main body and a lid, with the lid covering the opening of the main body to achieve closure. The lid and the main body are pressed together by a sealing ring to ensure that the box 11 is sealed and waterproof.

[0045] To further facilitate carrying, a carrying handle 12 may be optionally provided on the outer side of the switch cabinet testing device enclosure. Specifically, carrying handles 12 are provided on both the left and right sides of the enclosure.

[0046] like Figure 2 As shown, optionally, the power supply module includes an AC output module 21 and a rectifier-transformer module 22. The AC output module 21 is electrically connected to the rectifier-transformer module 22, and the rectifier-transformer module 22 is provided with a first transmission terminal 241 and a second transmission terminal 242. The AC output module 21 provides raw AC power, and the rectifier-transformer module 22 converts the AC power into DC voltage suitable for the three-position controller 3 and the circuit breaker controller 4. The input port of the AC output module 21 can be connected to an external power source, such as a 220V or 380V AC power source. Specifically, the input port of the AC output module 21 is exposed outside the enclosure wall of the housing 11. The rectifier-transformer module 22 is provided with a rectifier bridge and a transformer, which are existing technologies and will not be described in detail here.

[0047] like Figure 2As shown, optionally, the power module also includes a backup battery 23, the output terminals of which are electrically connected to the input terminals of the rectifier transformer module 22. In the event of an AC power failure or a lack of power distribution due to a newly installed system, the backup battery 23 can promptly supply power to the test device to test the three-station mechanism and the circuit breaker under test. This improves the convenience of the test, ensures that the test process will not be interrupted due to power problems, guarantees the continuity of the test work, avoids data loss or inaccurate test results due to power outages, and helps ensure the integrity of the test.

[0048] Specifically, the backup battery 23 is a lithium secondary battery, which is installed and fixed on the bottom plate of the enclosure 11. The charging port of the backup battery 23 is located on the wall of the enclosure 11.

[0049] Optionally, the switchgear testing device also includes a circuit protection component. The AC output module 21 and / or the backup battery 23 are connected to the input terminals of the circuit protection component, and the output terminals of the circuit protection component are connected to the rectifier transformer module 22. The circuit protection component can effectively prevent damage to the internal circuit of the testing device caused by circuit overload, short circuit and other faults, ensure the electrical safety of the testing device, extend the service life of the equipment, and also protect the personal safety of the operators.

[0050] like Figure 2 As shown, optionally, the circuit protection component includes an air switch 5. Air switch 5, as a common circuit protection component, is characterized by its intuitive operation and rapid response. When a circuit abnormality occurs, air switch 5 can quickly and automatically disconnect the circuit, preventing the fault from escalating. Moreover, after the fault is cleared, the circuit can be restored through a simple closing operation, which is convenient and quick, reducing maintenance costs and time.

[0051] Specifically, there are two air switches 5, one of which is connected between the backup battery 23 and the rectifier transformer module 22, and the other air switch 5 is connected between the AC output module 21 and the rectifier transformer module 22.

[0052] Optionally, the AC output module 21 is provided with a third power supply terminal and a fourth power supply terminal. That is, the third and fourth power supply terminals of the power supply module are integrated on the AC output module 21. The AC output module 21 directly provides AC power to the three-position mechanism under test and the circuit breaker under test, thus isolating the three-position mechanism under test and the circuit breaker under test on the switch cabinet from the switch cabinet, eliminating the need to use the switch cabinet power supply, and avoiding interference with the central control room.

[0053] Furthermore, the switchgear testing device also includes a third power supply line and a fourth power supply line. The third and fourth power supply terminals are exposed outside the enclosure wall of the housing 11. One end of the third power supply line is connected to the third power supply terminal via a quick-connect connector, and one end of the fourth power supply line is connected to the fourth power supply terminal via a quick-connect connector. The other end of the third power supply line is also equipped with a quick-connect connector for easy connection to the three-station mechanism under test. The other end of the fourth power supply line is also equipped with a quick-connect connector for easy connection to the circuit breaker under test.

[0054] like Figure 1 As shown, optionally, the enclosure 11 is equipped with an isolation control switch 14 and a grounding control switch 15 on its walls. Both the isolation control switch 14 and the grounding control switch 15 are connected to the three-position controller 3. The enclosure 11 is also equipped with a circuit breaker control switch 16 on its walls, and the circuit breaker controller 4 is connected to the circuit breaker control switch 16. Operators can directly control the three-position controller 3 and the circuit breaker controller 4 by issuing different execution commands through the control switches on the enclosure walls, thereby enabling the three-position mechanism under test and the circuit breaker under test to perform corresponding actions. This is convenient and quick, improving the operability and efficiency of on-site testing.

[0055] Specifically, the isolating control switch 14 can control the opening or closing of the isolating switch in the three-position mechanism via the three-position controller 3. The grounding control switch 15 can control the opening or closing of the grounding switch in the three-position mechanism via the three-position controller 3. The circuit breaker control switch 16 can control the closing, opening, and energy storage of the circuit breaker via the circuit breaker controller 4. The isolating control switch 14, the grounding control switch 15, and the circuit breaker control switch 16 can all be knobs.

[0056] like Figure 1 As shown, optionally, a status indicator light 17 is provided on the wall of the enclosure 11, and the circuit breaker controller 4 is connected to the status indicator light 17. The status indicator light 17 displays the operating status of the circuit breaker under test in real time and intuitively. During the test, the operator can quickly understand whether the circuit breaker under test is in the closed, open, or energy storage state by observing the status indicator light 17, promptly identify problems and take corresponding measures, and improve the efficiency and accuracy of the test. Specifically, there are three status indicator lights 17, each with a different color, indicating the closed, open, and energy storage states respectively.

[0057] like Figure 1As shown, optionally, a status observation hole is provided on the wall of the housing 11, and an openable and closable sealing plate 13 is provided at the status observation hole, which is directly opposite the three-station controller 3. During normal testing, the sealing plate 13 is closed to protect the three-station controller 3 from external environmental influences, such as dust or moisture. When it is necessary to observe the status of the three-station controller 3, the sealing plate 13 can be opened for observation, which allows the operator to keep track of the working status of the three-station controller 3 at any time, while ensuring the protective performance of the equipment. Specifically, the status observation hole is rectangular, and the upper end of the sealing plate 13 is hinged to the upper edge of the status observation hole.

[0058] like Figure 2 and Figure 3 As shown, optionally, a mounting rail 18 is provided on the inner side wall of the housing 11. The cross-section of the mounting rail 18 is U-shaped, and the three-station controller 3 is provided with a through T-slot 32. The T-slot 32 is inserted into the mounting rail 18 along its length. This design makes it easy and convenient to install and remove the three-station controller 3 from the housing 11. When maintaining, upgrading, or replacing parts of the testing device, the three-station controller 3 can be quickly removed from or reinstalled on the housing 11. Moreover, through the cooperation of the T-slot 32 and the mounting rail 18, the position of the three-station controller 3 within the housing 11 along the length of the mounting rail 18 can be adjusted according to actual needs, improving the flexibility of the layout. Specifically, the mounting rail 18 is bolted to the rear side wall of the housing 11 and extends along... Figure 2 The left and right extension shown facilitates adjustment of the position of the three-station controller 3.

[0059] In this embodiment, the enclosure 11 is generally rectangular. The status observation hole, status indicator light 17, isolation control switch 14, grounding control switch 15, and circuit breaker control switch 16 are all located on the front wall of the enclosure 11. The circuit breaker controller 4, rectifier transformer module 22, and mounting rail 18 are all fixed to the rear inner wall of the enclosure 11 with screws. Two air switches 5 are slidably mounted on the mounting rail 18 via T-slots.

[0060] The working process of the switchgear testing device provided in this embodiment is as follows: The third power transmission terminal is connected to the power interface of the three-station mechanism under test via the third power transmission line, and the fourth power transmission terminal is connected to the power interface of the circuit breaker under test via the fourth power transmission line. The circuit breaker controller 4 is operated by the circuit breaker control switch 16 on the box wall to perform opening and closing tests on the circuit breaker under test. During the test, the display of the status indicator light 17 is observed to understand the working status of the circuit breaker under test in real time. If the status indicator light 17 shows an abnormality, the test is stopped immediately, and the circuit breaker and related connection lines are checked. The three-station controller 3 is operated by the isolation control switch 14 and the grounding control switch 15 on the box wall to perform corresponding tests on the three-station mechanism under test. During the test, the operating status of the three-station controller 3 can be observed through the status observation hole to ensure that the test is carried out normally. Throughout the test, the power module continuously and stably supplies power to this testing device and each device under test. If the mains power fails, the backup battery 23 automatically starts to ensure uninterrupted testing. At the same time, in the event of overload, short circuit or other faults, the air switch 5 quickly cuts off the circuit to protect the safety of the testing device. After completing all test items, first stop the control operation of the three-position mechanism and circuit breaker using the control switch. Disconnect the third and fourth power transmission lines from the three-position mechanism and circuit breaker under test.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Switchgear testing device, characterized in that The switch cabinet testing device comprises a box body (11) and a power module, a three-position controller (3) and a circuit breaker controller (4) arranged in the box body (11), wherein, The power module is provided with a first power terminal (241), a second power terminal (242), a third power terminal and a fourth power terminal, the third power terminal is used for electrically connecting a three-position mechanism to be tested, and the fourth power terminal is used for electrically connecting a circuit breaker to be tested. The three-position controller (3) is provided with a first power connection terminal (31) and a first control terminal, the first power connection terminal (31) is connected with the first power terminal (241), and the first control terminal is used for communication connection of the three-position mechanism to be tested. The circuit breaker controller (4) is provided with a second power connection terminal (41) and a second control terminal, the second power connection terminal (41) is connected with the second power terminal (242), and the second control terminal is used for communication connection of the circuit breaker to be tested.

2. Switchgear test device according to claim 1, characterized in that The power module comprises an alternating current output module (21) and a rectifier and transformer module (22), the alternating current output module (21) is electrically connected with the rectifier and transformer module (22), and the rectifier and transformer module (22) is provided with the first power terminal (241) and the second power terminal (242).

3. Switchgear test device according to claim 2, characterized in that The power module further comprises a backup battery (23), and an output terminal of the backup battery (23) is electrically connected with an input terminal of the rectifier and transformer module (22).

4. Switchgear test device according to claim 3, characterized in that The switch cabinet testing device further comprises a circuit protection assembly, the alternating current output module (21) and / or the backup battery (23) is connected with an input terminal of the circuit protection assembly, and an output terminal of the circuit protection assembly is connected with the rectifier and transformer module (22).

5. Switchgear test device according to claim 4, characterized in that The circuit protection assembly comprises an air switch (5).

6. The switchgear test device of claim 2, wherein, The alternating current output module (21) is provided with the third power terminal and the fourth power terminal.

7. Switchgear test device according to any of claims 1-6, characterized in that, The box wall of the box body (11) is provided with an isolation control switch (14) and a grounding control switch (15), the isolation control switch (14) and the grounding control switch (15) are connected with the three-position controller (3), the box wall of the box body (11) is provided with a circuit breaker control switch (16), and the circuit breaker controller (4) is connected with the circuit breaker control switch (16).

8. Switchgear testing device according to any of claims 1-6, characterized in that, The box wall of the box body (11) is provided with a state indicating lamp (17), and the circuit breaker controller (4) is connected with the state indicating lamp (17).

9. Switchgear testing device according to any of claims 1-6, characterized in that, The box wall of the box body (11) is provided with a state observation hole, the state observation hole is provided with an openable and closable closure plate (13), and the state observation hole is directly opposite to the three-position controller (3).

10. Switchgear testing device according to any of claims 1-6, characterized in that, The inner side wall of the box body (11) is provided with a mounting guide rail (18), the mounting guide rail (18) has a cross section in the shape of Chinese character "j", the three-position controller (3) is provided with a through T-shaped groove (32), and the T-shaped groove (32) is inserted with the mounting guide rail (18) along the length direction of the mounting guide rail (18).

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