Capacitive load experiment system of wide-range current output intelligent matching load

Abstract

The invention discloses a wide-range current output intelligent load matching capacitive load experiment system, which comprises a three-phase current monitoring module, a multi-stage capacitor load module, a parameter input module and a calculation control module, and is characterized in that the three-phase current monitoring module, the multi-stage capacitor load module and the parameter input module are electrically connected with the calculation control module; the three-phase current monitoring module comprises an A-phase current display unit, a B-phase current display unit and a C-phase current display unit and is used for collecting and displaying real-time current of corresponding phase lines of a three-phase experimental product in real time, and the problems that an existing capacitive load experimental system is narrow in current output range, poor in adaptability, low in intelligent degree, insufficient in long-period operation stability and the like are solved. Current can be accurately output in a wide range, loads are intelligently matched, multiphase products are compatible, experiment safety and stability can be guaranteed, and efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of electrical testing equipment technology, and in particular to a capacitive load testing system with wide-range current output and intelligent load matching. Background Technology

[0002] In the field of electrical equipment research and development, production and testing, the performance tests of electrical products such as control and protection switches, such as temperature rise and lifespan, rely on a stable capacitive load environment. The capacitive load test system is the core equipment to ensure the smooth conduct of such tests. Current capacitive load testing systems on the market generally suffer from several problems. Firstly, their current output range is narrow, with most systems unable to cover a wide range of testing needs, from below 1A to above 300A. This results in low coverage of testing products with different specifications and performance requirements, necessitating the use of multiple testing devices of varying sizes, significantly increasing laboratory procurement costs and space requirements. Secondly, the level of intelligent load matching is low, often requiring manual selection of load combinations based on experience. This is not only cumbersome and time-consuming but also prone to human error leading to insufficient load matching accuracy, affecting the accuracy of experimental data and increasing the professional skills required of testing personnel. Thirdly, compatibility is poor, with most systems only compatible with three-phase testing products, failing to meet the testing needs of single-phase and two-phase products, thus limiting applicable scenarios. Fourthly, monitoring and safety assurance during the testing process are insufficient. Some systems lack real-time and accurate monitoring of three-phase current, failing to provide timely warnings when current imbalances or exceed safety limits, potentially leading to experimental interruptions, equipment damage, or even safety accidents. Finally, experimental data recording relies on manual methods, failing to automatically and completely store key data such as voltage, current, and experimental duration, hindering data traceability, analysis, and result verification.

[0003] To address the shortcomings of the existing technologies, a capacitive load experimental system with wide-range current output and intelligent load matching is proposed. This system aims to solve the problems existing in current experimental equipment, improve experimental efficiency, accuracy and safety, and reduce experimental costs and labor intensity. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned technical problems and provide a capacitive load experimental system with wide-range current output and intelligent load matching. This invention solves the problems of narrow current output range, poor adaptability, low level of intelligence, and insufficient stability in long-cycle operation of existing capacitive load experimental systems. It can output current accurately over a wide range, intelligently match loads, and is compatible with multi-phase products, ensuring experimental safety and stability while improving efficiency.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a capacitive load experimental system with wide-range current output intelligent matching load, including a three-phase current monitoring module, a multi-stage capacitor load module, a parameter input module and a calculation and control module, wherein the three-phase current detection module, the multi-stage capacitor load module and the parameter input module are all electrically connected to the calculation and control module;

[0006] The three-phase current monitoring module includes an A-phase current display unit, a B-phase current display unit, and a C-phase current display unit, which are used to collect and display the real-time current of the corresponding phase line of the three-phase experimental product in real time.

[0007] The multi-level capacitor load module includes 16 independently controlled capacitor groups HK1, HK2, HK3, HK4, HK5, HK6, HK7, HK8, HK9, HK10, HK11, HK12, HK13, HK14, HK15 and HK16. Each capacitor group has an independent capacitor group expected current display unit to display the expected experimental current value of the Meizu capacitor group.

[0008] The parameter input module includes a voltage input unit, a voltage confirmation unit, and a load current expectation display unit. The voltage input unit is used to input the voltage parameters required for the experiment, the voltage confirmation unit is used to confirm the input experimental voltage parameters, and the load current expectation display unit is used to display the expected value of the load current.

[0009] The calculation and control module includes a load current expected value calculation unit and a capacitor bank selection unit. The capacitor bank selection unit has 16 selection buttons corresponding to capacitor banks HK1~HK16, which are used to select the capacitor banks to participate in the experiment. The load current expected value calculation unit is used to generate the load current expected value based on the input parameters and feed it back to the load current expected value display unit for display.

[0010] An experimental method for a capacitive load experimental system based on the wide-range current output intelligent matching load of claim 1, characterized by comprising the following steps:

[0011] S1: Input the voltage parameters corresponding to the experimental product through the voltage input unit;

[0012] S2: Confirm the input voltage parameters through the voltage confirmation unit;

[0013] S3: The load current expected value is generated by the load current expected value calculation unit in combination with the current requirements of the experimental product and displayed in the load current expected value display unit;

[0014] S4: Based on the optimal load matching of the calculation control module, select the corresponding capacitor bank from HK1 to HK16 through the capacitor bank selection unit.

[0015] S5: Start the experiment and observe the A / B / C phase current in real time through the three-phase current monitoring module. Monitor the operating status of each capacitor bank through the A-phase current display unit, B-phase current display unit and C-phase current display unit, and maintain the long-term stability of the experimental current.

[0016] Preferably, the calculation control module also includes an experimental data recording unit for automatically storing voltage, current, and experimental duration data during the experiment.

[0017] Preferably, in step S4, the optimal load matching includes at least one combination of capacitor banks HK1 to HK16.

[0018] Preferably, in step S5, when the current collected by the three-phase current monitoring module is unbalanced or exceeds the safe range, a warning signal is triggered by the calculation control module.

[0019] The beneficial effects of this invention are:

[0020] 1. This invention, through a 16-group independently controlled capacitor bank architecture, can achieve any experimental current output within the range of 358A to 1.3A, while being compatible with single-phase 0.75A-207A, two-phase and three-phase experimental products. It achieves 100% coverage of various types of experimental products, effectively solving the problems of narrow current output range and poor product compatibility of existing equipment. It eliminates the need to equip multiple devices of different specifications, significantly reducing laboratory purchase costs and space occupation.

[0021] 2. This invention automatically receives experimental parameters through a calculation and control module, accurately calculates the expected value of the load current, and generates the optimal load matching scheme. Experimenters only need to simply enter the parameters and confirm to complete the load configuration. There is no need to rely on experience to manually select the load combination, which not only greatly shortens the experimental preparation time and improves the experimental efficiency, but also reduces human operation error.

[0022] 3. It has the ability to maintain an ultra-long experimental current, and can operate stably for a long time without interruption at a maximum experimental current of 358A. It is also equipped with a three-phase current real-time monitoring and abnormal early warning mechanism, which can promptly detect problems such as current imbalance or exceeding the safe range and trigger an early warning. With the automatic power-off protection function, it can effectively avoid equipment damage, experimental interruption and safety accidents. In addition, the automatic experimental data storage function ensures the complete traceability of key data such as voltage, current and duration. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the module structure of the present invention;

[0024] Figure 2 This is the electrical control schematic diagram of the present invention;

[0025] Figure 3 This is a schematic diagram of the main interface of the present invention;

[0026] Figure 4 This is a schematic diagram of the experimental interface of the present invention.

[0027] In the diagram: 1. Three-phase current monitoring module; 11. Phase A current display unit; 12. Phase B current display unit; 13. Phase C current display unit; 2. Multi-stage capacitor load module; 21. Capacitor bank; 22. Capacitor bank expected current display unit; 3. Parameter input module; 31. Voltage input unit; 32. Voltage confirmation unit; 33. Load current expected display unit; 4. Calculation and control module; 41. Load current expected value calculation unit; 42. Capacitor bank selection unit; 43. Experimental data recording unit. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1-4 As shown, the present invention provides a capacitive load experimental system with wide-range current output intelligent matching load, comprising a three-phase current monitoring module 1, a multi-stage capacitor load module 2, a parameter input module 3, and a calculation and control module 4, characterized in that: the three-phase current detection module 1, the multi-stage capacitor load module 2, and the parameter input module 3 are all electrically connected to the calculation and control module 4;

[0030] The three-phase current monitoring module 1 includes an A-phase current display unit 11, a B-phase current display unit 12 and a C-phase current display unit 13, which are used to collect and display the real-time current of the corresponding phase line of the three-phase experimental product in real time.

[0031] The multi-level capacitor load module 2 includes 16 independently controlled capacitor banks 21HK1, HK2, HK3, HK4, HK5, HK6, HK7, HK8, HK9, HK10, HK11, HK12, HK13, HK14, HK15 and HK16. Each capacitor bank has an independent capacitor bank expected current display unit 22 to display the expected experimental current value of the Meizu capacitor bank.

[0032] The parameter input module 3 includes a voltage input unit 31, a voltage confirmation unit 32, and a load current expectation display unit 33. The voltage input unit 31 is used to input the voltage parameters required for the experiment, the voltage confirmation unit 31 is used to confirm the input experimental voltage parameters, and the load current expectation display unit 33 is used to display the expected value of the load current.

[0033] The calculation and control module 4 includes a load current expected value calculation unit 41 and a capacitor bank selection unit 42. The capacitor bank selection unit 42 has 16 selection buttons corresponding to capacitor banks HK1~HK16, which are used to select the capacitor banks to participate in the experiment. The load current expected value calculation unit 41 is used to generate the load current expected value based on the input parameters and feed it back to the load current expected value display unit 33 for display.

[0034] The three-phase current monitoring module 1 is equipped with independent A, B, and C phase current display units to realize real-time acquisition and visualization of the current of each phase line during the experiment, so that the experimenters can intuitively grasp the operating status of the experimental product and detect current abnormalities in a timely manner.

[0035] The multi-level capacitor load module 2 is equipped with 16 independently controlled capacitor banks 21 and corresponding expected current display units 22, providing a hardware foundation for wide-range current output. By combining multiple capacitor banks, the load current can be flexibly adjusted to meet the current requirements of different experimental products. At the same time, the independent expected current display can help experimental personnel predict the load matching effect in advance and improve the matching accuracy.

[0036] The parameter input module 3 clarifies the functional division of voltage input, confirmation, and load current expectation display, simplifies the experimental parameter setting process, avoids parameter input errors, and ensures the accuracy of experimental parameters.

[0037] The load current expected value calculation unit 41 of the calculation control module 4 works in conjunction with the capacitor bank selection unit 42 to realize semi-automation of load matching, reduce manual intervention, and reduce the difficulty of operation for experimenters. At the same time, 16 independent selection buttons can precisely control the capacitor bank 21 participating in the experiment, further improving the flexibility and accuracy of load matching.

[0038] An experimental method for a capacitive load experimental system based on a wide-range current output intelligent matching load as described in claim 1, characterized by comprising the following steps:

[0039] S1: Check the connection status of the three-phase current monitoring module 1, multi-stage capacitor load module 2, parameter input module 3 and calculation control module 4 to ensure that the circuit connection of each module is normal; at the same time, check the normal status of the 16 capacitor banks 21HK1~HK16, and check that the display units and buttons are functioning normally.

[0040] S2: The rated voltage parameters corresponding to the experimental product are entered through the voltage input unit 31 of the parameter input module 3, the touch screen, the button input panel, etc. After the input is completed, the voltage input unit 31 automatically displays the entered voltage value, and the experimental personnel check the consistency between the entered parameters and the requirements of the experimental product.

[0041] S3: After verifying that the parameters are correct, press the confirmation button on the voltage confirmation unit 32. The system will automatically lock the entered voltage parameters, and at the same time, the parameter input module 3 will send a prompt signal indicating that the parameters have been successfully confirmed.

[0042] S4: The load current expected value calculation unit 41 of the calculation control module 4 automatically calculates the required load current expected value based on the locked voltage parameters, combined with the rated current requirements of the experimental product and the capacitive load characteristic formula, and feeds the expected value back to the load current expected value display unit 33 for visualization; the experimenter can check the consistency between the expected value and the experimental plan requirements. If there is a deviation, the experimenter can return to S2 to adjust the voltage parameters or correct the current requirement parameters of the experimental product.

[0043] S5: Optimal load matching and capacitor bank selection. The capacitor bank selection unit 42 of the calculation control module 4 automatically analyzes and generates at least one optimal load matching scheme based on the expected load current value and the individual capacitance value and rated current parameters of the 16 capacitor banks 21. This optimal scheme is the capacitor bank combination that meets the expected current value, minimizes error, and has the lowest energy consumption. The recommended capacitor banks are displayed via indicator lights or a screen. The experimenter selects the recommended scheme according to the experimental requirements or manually selects the required capacitor bank 21 from HK1 to HK16 using the 16 corresponding buttons on the capacitor bank selection unit 42. After selection, the system automatically displays the combination information of the selected capacitor bank and the corresponding expected current value.

[0044] S6: After verifying that the selected capacitor bank and expected parameters are correct, press the system start button to officially start the experiment; the system automatically connects the circuit of the selected capacitor bank and the experimental product, and the three-phase current monitoring module 1 starts working immediately.

[0045] S7: The experimenter observes the actual current value of each phase line in real time through the A-phase current display unit 11, B-phase current display unit 12, and C-phase current display unit 13 of the three-phase current monitoring module 1. At the same time, the experimenter compares the deviation between the actual current and the expected current through the expected current display unit 22 corresponding to each capacitor bank, and monitors the operating status of each capacitor bank 21. The experimental data recording unit 43 of the calculation control module 4 synchronously and automatically stores the real-time voltage and current data and experimental duration during the experiment.

[0046] S8: If the current collected by the three-phase current monitoring module 1 is unbalanced or exceeds the safe range, the calculation and control module 4 will immediately trigger an early warning signal and automatically cut off the experimental circuit or suspend the experiment; the experimenters will investigate the cause of the abnormality and restart the experiment according to steps S2~S7 after troubleshooting.

[0047] S9: After the experiment is completed, the experimental data recording unit 43 completes the storage of the final experimental data and generates an experimental data report.

[0048] The calculation and control module 4 also includes an experimental data recording unit 43, which is used to automatically store voltage, current and experimental duration data during the experiment.

[0049] It enables the automatic storage of key data such as voltage, current, and experimental duration during the experiment, replacing the traditional manual recording method, reducing the labor intensity of experimenters, avoiding omissions and errors that may occur during manual recording, and ensuring the integrity and accuracy of experimental data.

[0050] Automatically stored experimental data facilitates the traceability, analysis, and verification of subsequent experimental results, providing comprehensive and reliable data support for the performance evaluation of experimental products. This helps to shorten the preparation time for subsequent experiments and improve experimental efficiency.

[0051] In step S4, the optimal load matching includes at least one combination of capacitor banks 21HK1~HK16.

[0052] To enhance the flexibility and applicability of load matching, experimenters can choose the optimal solution from a variety of combinations based on the experimental field, experimental accuracy requirements, equipment energy consumption control, experimental duration, etc. The multiple combinations provide experimenters with more experimental options and break through the limitations of a single load combination.

[0053] When some capacitor banks fail or require maintenance, the same load current requirement can be achieved through other combinations, ensuring the continuity of the experiment and reducing the impact of equipment failure on the experimental progress.

[0054] In step S5, when the current collected by the three-phase current monitoring module 1 is unbalanced or exceeds the safe range, the calculation control module 4 triggers an early warning signal.

[0055] To achieve proactive safety protection during the experiment, when the three-phase current is unbalanced or exceeds the safe range, the calculation and control module will promptly trigger an early warning signal to remind the experimenters to take timely intervention measures, thereby avoiding damage to experimental equipment, scrapping of experimental products, or even safety accidents caused by abnormal current, and ensuring the safety of personnel and equipment.

[0056] The existence of the early warning mechanism reduces the monitoring pressure on experimenters, eliminating the need for constant high-level focus on current data observation, thus improving the comfort and safety of the experimental process. At the same time, it can reduce the experimental interruption time caused by abnormal current, making it easier to quickly troubleshoot problems and resume the experiment, and ensuring the progress of the experiment.

[0057] The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A capacitive load experimental system with wide-range current output intelligent matching load, comprising a three-phase current monitoring module (1), a multi-stage capacitor load module (2), a parameter input module (3), and a calculation and control module (4), characterized in that: The three-phase current detection module (1), the multi-stage capacitor load module (2), and the parameter input module (3) are all electrically connected to the calculation and control module (4); The three-phase current monitoring module (1) includes an A-phase current display unit (11), a B-phase current display unit (12), and a C-phase current display unit (13), which are used to collect and display the real-time current of the corresponding phase line of the three-phase experimental product in real time. The multi-level capacitor load module (2) includes 16 independently controlled capacitor banks (21) HK1, HK2, HK3, HK4, HK5, HK6, HK7, HK8, HK9, HK10, HK11, HK12, HK13, HK14, HK15 and HK16, each capacitor bank has an independent capacitor bank expected current display unit (22) to display the expected experimental current value of the Meizu capacitor bank; The parameter input module (3) includes a voltage input unit (31), a voltage confirmation unit (32), and a load current expected display unit (33). The voltage input unit (31) is used to input the voltage parameters required for the experiment, the voltage confirmation unit (31) is used to confirm the input experimental voltage parameters, and the load current expected display unit (33) is used to display the expected value of the load current. The calculation control module (4) includes a load current expected value calculation unit (41) and a capacitor group selection unit (42). The capacitor group selection unit (42) has 16 selection buttons corresponding to capacitor groups HK1~HK16, which are used to select the capacitor groups participating in the experiment. The load current expected value calculation unit (41) is used to generate the load current expected value based on the input parameters and feed it back to the load current expected value display unit (33) for display.

2. An experimental method for a capacitive load experimental system based on the wide-range current output intelligent matching load as described in claim 1, characterized in that, Specifically, the following steps are included: S1: Input the voltage parameters corresponding to the experimental product through the voltage input unit (31); S2: Confirm the input voltage parameters through the voltage confirmation unit (32); S3: The load current expected value is generated by the load current expected value calculation unit (41) in combination with the current requirements of the experimental product and displayed in the load current expected value display unit (33); S4: Based on the optimal load matching of the calculation control module (4), select the capacitor group selection unit (42) through the capacitor group (21) and select the corresponding capacitor group (21) from HK1 to HK16. S5: Start the experiment and observe the A / B / C phase current in real time through the three-phase current monitoring module (1). Monitor the operating status of each capacitor bank (21) through the A phase current display unit (11), B phase current display unit (12) and C phase current display unit (13) to maintain the long-term stability of the experimental current.

3. The capacitive load experimental system for wide-range current output intelligent matching load according to claim 1, characterized in that: The calculation control module (4) also includes an experimental data recording unit (43) for automatically storing voltage, current and experimental duration data during the experiment.

4. The capacitive load experimental system for wide-range current output intelligent matching load according to claim 2, characterized in that: In step S4, the optimal load matching includes at least one combination of capacitor banks (21) HK1~HK16.

5. The capacitive load experimental system for wide-range current output intelligent matching load according to claim 2, characterized in that: In step S5, when the current collected by the three-phase current monitoring module (1) is unbalanced or exceeds the safe range, the warning signal is triggered by the calculation control module (4).

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