Electrical cabinet loading test system

Abstract

The utility model discloses an electrical cabinet loading test system. The electrical cabinet loading test system comprises a main power supply cabinet which is electrically connected with the input end of a to-be-tested electrical cabinet and is used for providing a loading working power supply for the to-be-tested electrical cabinet; the load equipment comprises a plurality of special load equipment cabinets, and each special load equipment cabinet is electrically connected with the output end of the to-be-tested electrical cabinet and is used for simulating the load loaded in the actual application environment of the to-be-tested electrical cabinet; the load conversion box and the load transfer box are arranged between the load special equipment cabinet and the to-be-tested electrical cabinet and are used for connecting lines between the load special equipment cabinet and the to-be-tested electrical cabinet; and the heating detection equipment is used for acquiring the temperature of a target electrical element of the to-be-detected electrical cabinet. The electrical cabinet loading test system provided by the utility model can be used for electrical cabinet loading test, and the quality control level of electrical cabinet products is improved.

Description

Technical Field

[0001] The present application relates to the technical field of test equipment, and particularly relates to an electrical cabinet loading test system. Background Art

[0002] Electrical cabinet design companies can complete product design, production and assembly according to the electrical cabinet design requirements of customers, and at the same time conduct routine electrical safety inspections and function tests. However, since the actual operating environment is not simulated for loading tests, it is still impossible to completely avoid overheating situations caused by the quality problems of electrical components themselves or unreliable connection points during the loading operation. Such overheating situations of electrical cabinets during operation may pose industrial-level safety risks and product damage risks.

[0003] Therefore, to avoid the above risks, there is an urgent need to provide an electrical cabinet loading test system. Summary of the Utility Model

[0004] The present application provides an electrical cabinet loading test system for solving the problem in the related art that there is no suitable loading test system for electrical cabinets, and overheating during operation causes industrial-level safety risks and product damage risks.

[0005] To achieve the above object, the present application is implemented through the following technical solutions:

[0006] The present application provides an electrical cabinet loading test system for the loading test of a to-be-tested electrical cabinet. The electrical cabinet loading test system includes:

[0007] A main power cabinet electrically connected to the input end of the to-be-tested electrical cabinet for providing the loading working power for the to-be-tested electrical cabinet;

[0008] A load device including a plurality of load dedicated equipment cabinets, each of the load dedicated equipment cabinets being electrically connected to the output end of the to-be-tested electrical cabinet for simulating the load during loading in the actual operating environment of the to-be-tested electrical cabinet;

[0009] A load conversion box disposed between the load dedicated equipment cabinet and the to-be-tested electrical cabinet for connecting the lines between the load dedicated equipment cabinet and the to-be-tested electrical cabinet;

[0010] A heat detection device for obtaining the temperature of the target electrical component of the to-be-tested electrical cabinet during the process of the to-be-tested electrical cabinet loading the load dedicated equipment cabinet.

[0011] In one embodiment, each of the load dedicated equipment cabinets includes multiple groups of loads and a circuit breaker corresponding to each group of loads. The circuit breaker is used to control the operation of its corresponding load so that the load dedicated equipment cabinet simulates the load loaded in the actual application environment of the electrical cabinet to be tested.

[0012] In one embodiment, the load equipment includes a first load dedicated equipment cabinet, a second load dedicated equipment cabinet, and a third load dedicated equipment cabinet;

[0013] The first load dedicated equipment cabinet includes three groups of loads and a circuit breaker corresponding to each group of loads. The second load dedicated equipment cabinet includes three groups of loads and a circuit breaker corresponding to each group of loads. The third load dedicated equipment cabinet includes four groups of loads and a circuit breaker corresponding to each group of loads.

[0014] In one embodiment, the resistance of each group of loads includes ceramic resistors and / or metal oxide film resistors.

[0015] In one embodiment, the main power supply cabinet includes a switch. The switch is used to connect the power supply to the main power supply cabinet, and the switch is an overload short-circuit protection switch.

[0016] In one embodiment, the input ends of the main power supply cabinet and the electrical cabinet to be tested are electrically connected through an aviation plug.

[0017] In one embodiment, one or more hanging device fixing devices are provided on at least one side of the main power supply cabinet. The hanging device fixing device is used for fixing the aviation plug.

[0018] In one embodiment, the heat detection device is a thermal imager.

[0019] In one embodiment, a temperature testing device is provided in the load conversion box for real-time monitoring of the temperature of the environment in the load conversion box.

[0020] In one embodiment, a cooling fan is provided in the load equipment. A load box cooling power line and a load box ground wire are provided between the main power supply cabinet and the load equipment. The load box cooling power line is used to supply power to the cooling fan, and the load box ground wire is used to connect the main power supply cabinet and the load equipment to the ground terminal.

[0021] Compared with the prior art, an electrical cabinet loading test system provided by the present application has the following technical advantages: It can conduct long-term loading tests on electrical cabinets under actual working conditions, effectively discover overheating problems caused by component quality or connection point issues, and ensure the reliability and safety of the electrical cabinets to be tested. The load device includes multiple load-specific equipment cabinets to combinatorially simulate current demands under different working conditions and adapt to the test requirements of different types of electrical cabinets to be tested. The heat detection device can achieve real-time monitoring of each heating element of the electrical cabinet to be tested, and is used to ensure the safety and efficiency of the electrical cabinet loading test. In summary, through the combination of the above structures, the electrical cabinet loading test system can effectively improve the quality control level of electrical cabinet products, reduce industrial safety risks, and ensure the stable operation of electrical cabinets in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The block diagrams of an electrical cabinet loading test system and an electrical cabinet to be tested provided by an embodiment of the present application are shown.

[0023] Figure 2 The front view of a main power cabinet provided by an embodiment of the present application is shown.

[0024] Figure 3 The front view of another main power cabinet provided by an embodiment of the present application is shown.

[0025] Figure 4 The side view of a load conversion box provided by an embodiment of the present application is shown.

[0026] Figure 5 The structural diagram of a heat detection device provided by an embodiment of the present application is shown.

[0027] Illustration: 10, main power cabinet; 20, load device; 30, load conversion box; 40, heat detection device; 50, electrical cabinet to be tested; 11, aviation plug; 12, hanger fixing device; 13, acrylic protective plate; 21, load-specific equipment cabinet; 23, load box heat dissipation power cord; 24, load box ground wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present application more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] See Figures 1 to 5 , this application provides an electrical cabinet loading test system, which is used for the loading test of the electrical cabinet 50 to be tested. The electrical cabinet loading test system includes:

[0031] The main power cabinet 10, which is electrically connected to the input end of the electrical cabinet 50 to be tested, is used to provide the loading working power supply for the electrical cabinet 50 to be tested;

[0032] The load device 20, which includes a plurality of load dedicated equipment cabinets 21, and each of the load dedicated equipment cabinets 21 is electrically connected to the output end of the electrical cabinet 50 to be tested, is used to simulate the load applied when the actual application environment of the electrical cabinet 50 to be tested;

[0033] The load conversion box 30, which is arranged between the load dedicated equipment cabinet 21 and the electrical cabinet 50 to be tested, is used for the connection of the line between the load dedicated equipment cabinet 21 and the electrical cabinet 50 to be tested;

[0034] The heat detection device 40, which is used to obtain the temperature of the target electrical component of the electrical cabinet 50 to be tested during the process of the electrical cabinet 50 to be tested loading the load dedicated equipment cabinet 21.

[0035] The electrical cabinet loading test system provided in this embodiment includes the main power cabinet 10, the load device 20, the load conversion box 30 and the heat detection device 40, and each part works together to perform the loading test of the electrical cabinet 50 to be tested.

[0036] Among them, the main power cabinet 10 is electrically connected to the input end of the electrical cabinet 50 to be tested to provide the working power supply. The main power cabinet 10 can meet the operation requirements of high-current equipment and ensure that the electrical cabinet obtains stable power support during the test.

[0037] The load device 20 includes a plurality of load dedicated equipment cabinets 21, which are electrically connected to the output end of the electrical cabinet 50 to be tested respectively by simulating the load in the actual use environment. In specific applications, a plurality of circuit breakers are arranged inside each load dedicated equipment cabinet 21, and different current loads can be combined to simulate the actual working conditions.

[0038] The load conversion box 30 is arranged between the load dedicated equipment cabinet 21 and the electrical cabinet 50 to be tested, and is used for connecting lines to ensure the smooth transmission of current.

[0039] The heat detection device 40 can monitor in real time the temperatures of each target electrical component in the electrical cabinet 50 to be tested during the process of loading the load provided by the load dedicated equipment cabinet 21. In specific applications, when the temperature exceeds the set threshold, an alarm can be issued to prompt the tester to handle it. The target electrical components can be circuit breakers, contactors, relays, transformers, cable joints, etc. The installation position of the heat detection device 40 is such that the detection visual field range of the heat detection device 40 overlaps with the position of the electrical cabinet 50 to be tested, so as to enable the heat detection device 40 to obtain the temperatures of the target components of the electrical cabinet 50 to be tested.

[0040] Thus, it is possible to conduct a long-term load test on the electrical cabinet under actual working conditions, effectively discover over-temperature problems caused by component quality or connection point problems, and ensure the reliability and safety of the electrical cabinet 50 to be tested. The load device 20 includes multiple load dedicated equipment cabinets 21 to combine and simulate the current demands under different working conditions and adapt to the test requirements of different types of electrical cabinets 50 to be tested. The heat detection device 40 can realize real-time monitoring of each heating element of the electrical cabinet 50 to be tested, and is used to ensure the safety and efficiency of the test during the electrical cabinet load test.

[0041] In summary, through the combination of the above structures, the electrical cabinet load test system can effectively improve the quality control level of electrical cabinet products, reduce industrial safety risks, and ensure the stable operation of electrical cabinets in actual use.

[0042] In one embodiment, for each of the load dedicated equipment cabinets 21, it respectively includes multiple groups of loads and the circuit breakers corresponding to each group of loads. The circuit breakers are used to control the operation of their corresponding loads, so that the load dedicated equipment cabinet 21 simulates the loads loaded when the actual operating environment of the electrical cabinet 50 to be tested.

[0043] For each load dedicated equipment cabinet 21, it includes multiple groups of loads and the circuit breakers corresponding to each group of loads. The circuit breakers are used to control the operation of their corresponding loads. It can be considered that multiple groups of loads are arranged in the load dedicated equipment cabinet 21, and each group of loads is composed of one or more electrical load components (such as resistors, inductors or capacitors). The load groups can simulate different types of load conditions to meet different test requirements. Each group of loads corresponds to a circuit breaker, and the circuit breaker is connected in the circuit of the load group to control the on-off of the current of this group of loads. When the circuit breaker is in the closed state, this group of loads is powered on and operates; when it is in the open state, this group of loads is powered off and stops operating. Through independent circuit breaker control, independent control and protection of each group of loads can be achieved.

[0044] Meanwhile, in addition to controlling the operation of the load, the circuit breaker also has protection functions such as overcurrent and short - circuit protection. When a certain group of loads fails, the circuit breaker will automatically disconnect the circuit to protect the safety of the entire system. According to the test requirements, the operating states of different groups of loads can be flexibly combined, and by adjusting the closing or opening of the circuit breaker, the simulation of different load conditions can be achieved.

[0045] Thus, the circuit breaker provides independent overcurrent and short - circuit protection functions for each group of loads. Once an abnormality occurs in a certain group of loads, the circuit breaker can quickly cut off the current, prevent the expansion of the fault, and ensure the safety of the system. The independent design of the load group and the circuit breaker enables the system to flexibly adjust the load combination to meet the test requirements of different types and specifications of electrical cabinets. The tester can start and stop different load groups according to needs to simulate various actual working conditions. The application of the circuit breaker makes the switching of load groups more convenient, simplifies the test operation, and improves the test efficiency. By quickly adjusting the state of the circuit breaker, the load conditions can be rapidly changed to conduct diverse tests.

[0046] The load device 20 is provided with an industrial socket for connecting the wires of the output end of the electrical cabinet 50 to be tested, and it can be a four - core 10 - square cable. Similarly, the load device 20 and the load box can also be connected by a four - core 10 - square cable.

[0047] In one of the embodiments, the load device 20 includes a first load - dedicated equipment cabinet 21, a second load - dedicated equipment cabinet 21, and a third load - dedicated equipment cabinet 21;

[0048] The first load - dedicated equipment cabinet 21 includes three groups of loads, the second load - dedicated equipment cabinet 21 includes three groups of loads, and the third load - dedicated equipment cabinet 21 includes four groups of loads.

[0049] As an example, taking the first load - dedicated equipment cabinet 21 as an example:

[0050] The outputs corresponding to the three groups of loads in the first load - dedicated equipment cabinet 21 are 30A, 30A, and 30A respectively. When one loop of the electrical cabinet to be tested requires an output of 30A, close the circuit breaker corresponding to one group of loads in the first load - dedicated equipment cabinet 21 to meet the set current requirement. When one loop of the electrical cabinet to be tested requires an output of 60A, only need to close the corresponding circuit breaker through the panel for combination. For example, close the corresponding circuit breaker to connect the phase wires and neutral wires of the first and second groups of loads in parallel (A to A, B to B, C to C, N to N) to meet the requirements of the electrical cabinet to be tested.

[0051] In one of the embodiments, the resistance of each group of loads includes ceramic resistors and / or metal oxide film resistors.

[0052] The ceramic resistor is made of a highly stable ceramic material, featuring high-temperature stability and good heat dissipation performance. It is suitable for load simulation in high-power and high-temperature environments. The metal oxide film resistor is made of metal oxide film material, with good stability, low noise, and high-temperature resistance, and is suitable for load simulation requiring high precision and high stability. Each group of loads can consist of one or more resistors to achieve different resistance values and power loads. Thus, it is possible to conduct long-term stable loading tests in high-temperature environments and is suitable for tests under high-load conditions.

[0053] In one of the embodiments, the main power cabinet 10 includes a switch, which is used to connect the power supply to the main power cabinet 10, and the switch is an overload short-circuit protection switch.

[0054] In one of the embodiments, the input ends of the main power cabinet 10 and the electrical cabinet to be tested 50 are electrically connected through an aviation plug 11. An industrial socket is provided on the main power cabinet 10. The lines between the electrical cabinet to be tested 50 and the main power cabinet 10 are, for example, two groups of 3*95 square three-core cable lines as three-phase lines, two groups of 2*50 square two-core cable lines as ground wires and neutral lines, two groups of 3*35 + 1*16 square cable lines as three-phase lines and ground wires, and two 1*16 square cable lines as neutral lines.

[0055] In this embodiment, the input ends of the main power cabinet 10 and the electrical cabinet to be tested 50 are electrically connected through the aviation plug 11. The main power cabinet 10 provides the working power supply, and the input end of the electrical cabinet to be tested 50 is connected to the main power cabinet 10 through the aviation plug 11. Among them, the aviation plug 11 is a connector designed for highly reliable electrical connections and usually has the functions of quick connection and disconnection. Through the aviation plug 11, the main power cabinet 10 transmits electric power to the electrical cabinet to be tested 50, ensuring a continuous and stable power supply during the test process. The design of the aviation plug 11 ensures the reliability and safety of the electrical connection, reducing the energy loss in power transmission.

[0056] Thus, due to the quick connection and disconnection characteristics of the aviation plug 11, the installation and disassembly efficiency of the test equipment can be significantly improved, and the equipment commissioning and replacement time can be reduced. The design of the aviation plug 11 complies with strict electrical and mechanical performance standards, can provide high reliability and safety, ensure stable electrical connection during the test process, and will not cause safety problems due to loosening or poor contact. The anti-misinsertion design of the aviation plug 11 can avoid circuit failures and safety hazards caused by misinserting the connector, improving the safety and reliability of the system. Since the connection of the aviation plug 11 is simple, system maintenance and replacement become more convenient. Once a problem occurs, the maintenance personnel can quickly disconnect and replace the connector, shortening the fault handling time and improving the equipment maintenance efficiency.

[0057] In one embodiment, one or more hanging fixture fixing devices 12 are provided on at least one side of the main power cabinet 10, and the hanging fixture fixing devices 12 are used for fixing the aviation plug 11.

[0058] Specifically, the hanging fixture fixing device 12 may fix the aviation plug 11 by means such as clamping, locking or other fixing methods. The aviation plug 11 is fixed on the main power cabinet 10 through the hanging fixture fixing device 12, avoiding the situation of the plug loosening or falling off when not in use. The hanging fixture fixing device 12 fixes the aviation plug 11 on the side of the main power cabinet 10, making the overall appearance simple and beautiful, and also facilitating the operation of the operator. Among them, an acrylic protection board 13 may be provided in the main power cabinet 10 for protecting the busbars in the electric cabinet.

[0059] In one embodiment, the heat detection device 40 is a thermal imager.

[0060] The thermal imager can obtain the surface temperature distribution of the object to be measured by detecting the infrared radiation emitted by the object. Specifically, the thermal imager converts the infrared radiation into a visible thermal image, showing the temperature distribution of the target electrical component. The thermal image can be observed and recorded in real time through the display screen of the thermal imager or the connected computer. The thermal imager can also be equipped with corresponding software, which can perform data processing and analysis on the obtained thermal image, such as measuring temperature values, region division, etc.

[0061] Thus, the thermal imager can monitor the temperature distribution of the target electrical component in real time, detect abnormal situations in time, and help prevent potential safety hazards. The detection process of the thermal imager is non-contact, without directly contacting the object to be measured, avoiding possible interference or damage caused by contact. The thermal imager can comprehensively detect the temperature distribution of the target electrical component, with a wide coverage range, and can find local abnormal situations of the target electrical component. The thermal imager can quickly obtain temperature data over a large range and analyze it through data processing software, improving the detection efficiency and accuracy.

[0062] In one embodiment, a temperature testing device is provided in the load conversion box for real-time monitoring of the temperature of the environment inside the load conversion box. The temperature testing device is, for example, an ambient temperature tester.

[0063] Specifically, a temperature testing device including a temperature sensor or a temperature probe can be set inside the load conversion box to collect temperature data.

[0064] Thus, it is possible to monitor the temperature change inside the load conversion box in real time, detect abnormal temperature conditions in a timely manner, prevent potential safety hazards, and avoid accidents such as fires or equipment damage. By monitoring the temperature change, testers can take timely measures to reduce the temperature, effectively protect the internal equipment of the load conversion box, and extend its service life.

[0065] In one embodiment, a cooling fan is provided inside the load device 20. A load box cooling power line 23 and a load box ground line 24 are provided between the main power cabinet 10 and the load device 20. The load box cooling power line 23 is used to supply power to the cooling fan, and the load box ground line 24 is used to connect the main power cabinet 10 and the load device 20 to the ground terminal.

[0066] The setting of the load box cooling power line 23 can effectively provide the power supply required by the cooling device, help the load device 20 dissipate heat in a timely manner, and protect the device from overheating damage. The setting of the load box ground line 24 can ensure good grounding of the load box and the equipment therein, reduce potential safety hazards caused by static electricity accumulation or lightning strikes, etc., and protect the safety of the equipment and operators.

[0067] In summary, the setting of the load box cooling power line 23 and the load box ground line 24 can improve the stability of the system and prevent safety hazards.

[0068] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0069] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electrical cabinet loading test system, characterized in that: The electrical cabinet loading test system is used for loading test of the electrical cabinet to be tested, and the electrical cabinet loading test system comprises: A main power supply cabinet, the main power supply cabinet is electrically connected to the input end of the electrical cabinet to be tested, and is used to provide a loading working power supply for the electrical cabinet to be tested; A load device, wherein the load device comprises a plurality of load-specific equipment cabinets, each of which is electrically connected to an output terminal of the electrical cabinet to be tested, and is used to simulate the load applied when the actual operating environment of the electrical cabinet to be tested is used; A load conversion box, which is arranged between the load-specific equipment cabinet and the electrical cabinet to be tested, and is used for connecting the lines between the load-specific equipment cabinet and the electrical cabinet to be tested; A fever detection device is used to obtain the temperature of a target electrical component of the electrical cabinet to be tested during the process of loading the load-specific equipment cabinet onto the electrical cabinet to be tested.

2. The electrical cabinet loading test system according to claim 1, characterized in that: Each of the load-specific equipment cabinets includes multiple groups of loads and circuit breakers corresponding to each group of loads. The circuit breakers are used to control the operation of the corresponding loads so that the load-specific equipment cabinet can simulate the load loaded in the actual operating environment of the electrical cabinet to be tested.

3. The electrical cabinet loading test system according to claim 2, characterized in that: The load equipment includes a first load-specific equipment cabinet, a second load-specific equipment cabinet, and a third load-specific equipment cabinet; The first load-specific equipment cabinet includes three groups of loads and circuit breakers corresponding to each group of loads, the second load-specific equipment cabinet includes three groups of loads and circuit breakers corresponding to each group of loads, and the third load-specific equipment cabinet includes four groups of loads and circuit breakers corresponding to each group of loads.

4. The electrical cabinet loading test system according to claim 3, characterized in that: The resistors of each load group include ceramic resistors and / or metal oxide film resistors.

5. The electrical cabinet loading test system according to claim 1, characterized in that: The main power cabinet comprises a switch, which is used to connect the power supply to the main power cabinet, and the switch is an overload short-circuit protection switch.

6. The electrical cabinet loading test system according to claim 5, characterized in that: The input terminals of the main power supply cabinet and the electrical cabinet to be tested are electrically connected via an aviation plug.

7. The electrical cabinet loading test system according to claim 6, characterized in that: At least one side of the main power cabinet is provided with one or more hanger fixing devices, and the hanger fixing devices are used to fix the aviation plug.

8. The electrical cabinet loading test system according to claim 1, characterized in that: The fever detection device is a thermal imager.

9. The electrical cabinet loading test system according to claim 1, characterized in that: The load conversion box is provided with a temperature testing device for real-time monitoring of the temperature of the environment in the load conversion box.

10. The electrical cabinet loading test system according to claim 1, characterized in that: A cooling fan is provided in the load device, and a load box cooling power line and a load box grounding line are provided between the main power cabinet and the load device. The load box cooling power line is used to provide power for the cooling fan, and the load box grounding line is used to connect the main power cabinet and the load device to the grounding terminal.

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