A device for simulating and measuring electric sloshing waveforms with sequential output

Abstract

A device for simulating and measuring electric shaking waveforms with timing output, characterized in that it includes a cabinet, an operating table, a main voltage output unit, and a PLC control unit. The cabinet is divided into two parts, the upper half of the cabinet is provided with an operating table, and the lower half of the cabinet is hollow. The main voltage output unit is provided inside the lower half of the cabinet, and the PLC control unit is provided inside the lower half of the cabinet; a reasonably designed electrical control system: three groups of isolation transformers and voltage-regulating transformers are connected in series to form a voltage output circuit, and PLC is used to realize electrical logic control, so as to achieve voltage conversion without breakpoints, ensuring that the detector can accurately simulate electric shaking phenomena and detect the anti-electrical shaking function of low-voltage electrical appliances; electrical control intelligence: intelligent voltage timing control is designed based on PLC, and human-computer interaction is realized by touch screen. A combination of multiple low-voltage components ensures reliable operation without electromagnetic interference.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliance detection, and in particular to a device for simulating and measuring a power shaking waveform with a sequential output. Background Art

[0002] As power systems continue to expand and become more complex, the grid is increasingly subject to a variety of interference factors. For example, short circuits in the grid, the startup and shutdown of large equipment, and lightning strikes can all trigger power surges. With the increasing automation in industrial production, a large number of sophisticated electronic equipment and automated production lines are widely used. These equipment and production lines require extremely stable and continuous power supply. Even brief power surges can cause serious consequences such as production interruptions, reduced product quality, and even equipment damage. Many critical electrical devices, such as contactors and motor protectors, must continue to function properly during power surges to ensure the continuity and safety of the production process. Therefore, these devices are often designed with certain power surge protection features.

[0003] In order to ensure that the anti-electrical shaking function of electrical equipment is reliable and effective, a scientific and accurate method is needed to verify and test it to ensure that it can cope with electric shaking events in actual operation.

[0004] Traditional methods for testing the anti-sway functionality of electrical equipment often suffer from low efficiency, poor accuracy, and complex operations. For example, some testing methods require manual circuit construction to simulate power sway, making it difficult to precisely control the parameters of the sway, resulting in unreliable test results. Traditional testing methods may fail to comprehensively and systematically evaluate the anti-sway functionality of electrical equipment, making it difficult to meet the high reliability requirements of modern power systems and industrial production. Therefore, a new automated anti-sway functionality testing system is needed to address these issues.

[0005] Furthermore, with the increasing degree of industrial automation, the testing requirements for various electrical equipment and systems are becoming increasingly complex. In the field of low-voltage electrical testing, traditional manual operation and simple timers used for connection and disconnection tests no longer meet the requirements for efficient and accurate testing. The industry demands equipment that can achieve automated control and higher precision.

[0006] Precise time control is crucial in some low-voltage electrical equipment connection and disconnection tests. For example, some electrical equipment requires multiple connections and disconnections within specific time intervals. Using a PLC timer controller to achieve sequential output allows precise setting of connection and disconnection times with millisecond or even microsecond accuracy. This is significantly more accurate than manual operation or conventional timers.

[0007] Suppose that to test the switching performance of a relay, 100 switching operations must be performed within 10ms intervals. Using a PLC's sequential output, a program can easily implement this precise timing sequence. However, manual operation is difficult to achieve this accuracy requirement. To address this issue, a device for simulating and measuring current fluctuation waveforms with sequential output is proposed. Summary of the Invention

[0008] In response to the above technical problems, the present invention provides a device for simulating and measuring electric sloshing waveforms with sequential output, which comprises a cabinet, an operating console, a main voltage output unit, and a PLC control unit. The cabinet is divided into two parts, the upper half of which is provided with an operating console, and the lower half of which is hollow. The main voltage output unit and the PLC control unit are both provided inside the cabinet.

[0009] Furthermore, the cabinet has movable wheels at the bottom, front and rear doors with output interface openings, and a mounting bracket inside the lower half of the cabinet. Three 25kg voltage-regulating transformers and three 30kg isolation transformers are mounted on the mounting bracket. The mounting bracket is made of three-bent steel and a right-angle bracket with a φ10mm opening in combination with an aluminum alloy mounting rail, and is fixed to the bottom of the cabinet with φ8mm screws. The back of the cabinet is provided with an output voltage port with a φ10mm opening, arranged in two rows, upper and lower, for a total of 8 groups.

[0010] Furthermore, the main voltage output unit is used to build a voltage output control circuit, including three TEDGC2-5kVA voltage regulating transformers and three BK-5kVA isolation transformers. Each voltage regulating transformer and each isolation transformer constitute a voltage output, a total of three groups, denoted as U1-U3, and are connected in series. The final output is a total voltage denoted as U. The electrical appliance under test is connected to the port of U. Each group of voltage is equipped with a motor adjustment. The three groups of overall input and output ends are electrically connected to the PLC control unit. Each group of voltage is equipped with a motor adjustment, the input end is connected to a contactor for main circuit disconnection, and the output end is connected to a voltmeter to read the voltage value.

[0011] Furthermore, the operating console is provided with a touch screen, a boost button, a buck button, an oscilloscope, an installation panel, a control button, a selection switch, a green indicator light, and a terminal block. A boost button, a buck button, a green indicator light, and a selection switch constitute a voltage regulating group, with a total of three groups, which are electrically connected to three voltage regulating transformers respectively. The touch screen is electrically connected to the PLC control unit. The touch screen is a SIMATIC HMI Smart 700 IE V4, and the oscilloscope uses UPO1204X.

[0012] Furthermore, the PLC control unit includes SIMATIC S7-200SMART, CPUSR30 PLC controller, MEANWELLED R-120-2424V power supply, iC65NC6A2P miniature circuit breaker, LC1D1212A AC contactor, RT28-32 fuse, RXM2LB2BD relay, and is electrically connected through wires.

[0013] Beneficial effects of the present invention:

[0014] 1) A rationally designed electrical control system: A voltage output circuit is formed using three sets of isolation transformers and a voltage-regulating transformer connected in series. PLC is used to implement electrical logic control, ensuring seamless voltage conversion. This ensures the detector can accurately simulate power sway and test the anti-power sway capabilities of low-voltage electrical equipment. Intelligent electrical control: PLC-based intelligent voltage timing control is used, a touch screen enables human-computer interaction, and a combination of multiple low-voltage components ensures reliable operation without electromagnetic interference.

[0015] 2) Develop a user-friendly human-computer interaction interface: Implement user-friendly human-computer interaction on the touch screen, design parameter setting diagrams to facilitate user operation and monitoring, design intelligent voltage timing control based on PLC, implement human-computer interaction on the touch screen, ensure continuous voltage output without breakpoints, and intuitively display the test process. Design and layout of transformer voltage regulators, control components, etc. to ensure the electromagnetic compatibility of the instrument, and adopt a mobile architecture with a versatile interface to adapt to various products and working environments;

[0016] 3) Flexible mechanical design: Universal matching connectors and a human-machine friendly operating platform are used to meet the testing requirements of various low-voltage electrical appliances for anti-sway functions and timing control, ensuring reliable service life: the test function can operate reliably for a long time, and the protection circuit design prevents over-action;

[0017] 4) Structural design optimization: adopt reasonable dynamic line design and mobile thinking to solve the problems of multi-adaptability and aesthetics;

[0018] 5) Design cost control: Comprehensively consider the cost and performance of each part to facilitate mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a device for simulating and measuring electric sloshing waveforms with sequential output according to the present invention;

[0020] Figure 2 This is the main circuit diagram of the anti-electrical shaking function part of the electric shaking waveform simulation and measurement device with timing output of the present invention;

[0021] Figure 3 This is a control circuit diagram of the anti-electrical shaking function part of an electric shaking waveform simulation and measurement device with timing output of the present invention;

[0022] Figure 4 This is a control circuit diagram of the timing output portion of a device for simulating and measuring electric sloshing waveforms with timing output according to the present invention;

[0023] Figure 5 This is a flowchart of the overall operation of a device for simulating and measuring electric sloshing waveforms with sequential output according to the present invention;

[0024] As shown in the figure: 1-cabinet, 2-operating console, 3-main voltage output unit, 4-PLC control unit. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] Example 1

[0029] The present invention provides a device for simulating and measuring electric sloshing waveforms with sequential output, characterized by comprising a cabinet, an operating console, a main voltage output unit, and a PLC control unit. The cabinet is divided into two parts, the upper half of which is provided with an operating console, and the lower half of which is hollow. The main voltage output unit and the PLC control unit are both provided inside the cabinet.

[0030] Furthermore, the cabinet has movable wheels at the bottom, front and rear doors with output interface openings, and a mounting bracket inside the lower half of the cabinet. Three 25kg voltage-regulating transformers and three 30kg isolation transformers are mounted on the mounting bracket. The mounting bracket is made of three-bent steel and a right-angle bracket with a φ10mm opening in combination with an aluminum alloy mounting rail, and is fixed to the bottom of the cabinet with φ8mm screws. The back of the cabinet is provided with an output voltage port with a φ10mm opening, arranged in two rows, upper and lower, for a total of 8 groups.

[0031] Furthermore, the main voltage output unit is used to build a voltage output control circuit, including three TEDGC2-5kVA voltage regulating transformers and three BK-5kVA isolation transformers. Each voltage regulating transformer and each isolation transformer constitute a voltage output, a total of three groups, denoted as U1-U3, and are connected in series. The final output is a total voltage denoted as U. The electrical appliance under test is connected to the port of U. Each group of voltage is equipped with a motor adjustment. The three groups of overall input and output ends are electrically connected to the PLC control unit. Each group of voltage is equipped with a motor adjustment, the input end is connected to a contactor for main circuit disconnection, and the output end is connected to a voltmeter to read the voltage value.

[0032] Furthermore, the operating console is provided with a touch screen, a boost button, a buck button, an oscilloscope, an installation panel, a control button, a selection switch, a green indicator light, and a terminal block. A boost button, a buck button, a green indicator light, and a selection switch constitute a voltage regulating group, with a total of three groups, which are electrically connected to three voltage regulating transformers respectively. The touch screen is electrically connected to the PLC control unit. The touch screen is a SIMATIC HMI Smart 700 IE V4, and the oscilloscope uses UPO1204X.

[0033] Furthermore, the PLC control unit includes SIMATIC S7-200SMART, CPUSR30 PLC controller, MEANWELLED R-120-2424V power supply, iC65NC6A2P miniature circuit breaker, LC1D1212A AC contactor, RT28-32 fuse, RXM2LB2BD relay, and is electrically connected through wires.

[0034] Example 2

[0035] The operating console uses electrical control to complete the forward and reverse rotation control of the manual voltage regulator's motor, and the touch screen can flexibly set the holding time and drop time to achieve voltage output, realizing automatic control. The timing control function is connected to the 8-channel output port to meet the needs of various control circuits.

[0036] The touch screen is a SIMATIC HMI Smart 700 IE V4, with clear image display and a large window for easy observation and operation. It is connected to the PLC to set adjustment boxes such as the hold time and drop time, and displays time dynamic functions, unit information, and dynamic clock. The oscilloscope is a UPO1204X, which is used to measure the disconnection status of the tested electrical equipment and determine the recovery time.

[0037] The PLC control unit is connected to the touch screen on the operating table for control. Programming settings include hold time, drop time, etc. The contactor is connected to the transformer under the cabinet to select the voltage segment and determine the output value. The PLC is designed for time control in the order of ms and 10ms for the timing control function. It is connected to the 8-channel output port and can be easily operated according to the timing control diagram.

[0038] Power shake function control part:

[0039] 1. Voltage meter display area: Equipped with 4 VT1-VT3, VT voltmeters, which can directly display the voltage value after being connected. VT1 is used to display U1 in the timing control, VT2 is used to display U2 in the timing control, VT3 is used to display U3 in the timing control, and VT is used to display the final output voltage U in the timing control. U1 is the drop voltage, U1+U2 is the initial voltage, and U1+U3 is the recovery voltage;

[0040] 2. Oscilloscope: A measuring oscilloscope is installed to accurately record the action time of the tested electrical appliance. During operation, the ground terminal and the measuring terminal of the main measurement channel are connected to the input and output terminals of the tested electrical appliance respectively. Adjust the measurement parameters on the oscilloscope panel and click to start the electrical signal acquisition.

[0041] 3.PLC operation area: "Page 1" and "Page 2" touch pages can be used to set the initial time and drop time, directly touch the screen to input the time value, and touch to start the control line to run and stop;

[0042] 4. Instructions for the selection switches on the operating console: "Allow" selection switch on the left cabinet: State 0 is used to turn off PLC panel debugging, and state 1 is used to start PLC panel debugging; "Test circuit, debug circuit" selection switch: Start the debug circuit and prepare to start debugging the initial voltage, drop voltage, and recovery voltage in the early stage of the power swing test; Start the test circuit to start the power swing test. At this time, the debug circuit is closed and the voltage values ​​are fixed and cannot be changed; prepare to start the PLC time setting and open the voltage output path;

[0043] 5. U1-U3 three groups of voltage adjustment parts: respectively equipped with green signal indicator lights T1-3, used to indicate the connection of the three voltage regulators; "allow" selection switch, used to connect the three voltage regulator voltage regulating motors; green "boost" button switch, red "down" button switch; used to adjust the output voltage of the three voltage regulators;

[0044] Take U1 as an example: voltage debugging "allow" selection switch, state 0 is used to turn off U1 adjustment, state 1 is used to turn on U1 adjustment, after turning on, the green signal indicator light is on, and the "boost" and "down" buttons can adjust the value of U1 as needed;

[0045] 6. Output interface: There is a 1-way test interface on the lower right side of the cabinet; it has two red and black binding posts;

[0046] Timing function control part:

[0047] 1.PLC function: "Page 3" touch page, used for single timing control of relays in the circuit. The named channels are DQa.4, DQa.5, DQa.6, DQa.7, DQb.0, and DQb.1, a total of 6 channels. Among them, DQa.4, DQa.5, DQa.6, and DQa.7 set the connection time unit to ms, and DQb.0 and DQb.1 set the connection time unit to 10ms. Each channel can be selected by pressing the channel enable. After pressing, the connection indicator light will light up. Each channel can set a connection time according to the diagram;

[0048] The "Page 4" touch screen page is used for continuous timing control of relays in the circuit. It is named DQb.2 and DQb.3. Both channels can be set to 4 sections of on-time according to actual needs according to the diagram. The on-time unit of DQb.2 is ms, and the on-time unit of DQb.3 is 10ms. After pressing the cycle permission program, the total number of cycles can be set, and the number of cycle runs can be displayed in real time. The cycle period can also be set, and the cycle running time can be displayed in real time. The green signal light is always on to indicate the running process;

[0049] 2. Output interface: 8 groups of output ports, all of which are red and black binding posts, numbered DQa.4, DQa.5, DQa.6, DQa.7, DQb.0, DQb.1, DQb.2, DQb.3, corresponding to the channel names on pages 3 and 4;

[0050] Power shake function control operation:

[0051] 1. Test bench setting:

[0052] Select an appropriate test environment, fix the mobile hub, plug the left side of the electrical anti-sway function test system cabinet into the three-hole socket to power on, and close the main circuit breaker in the cabinet;

[0053] 2. Debug connection:

[0054] "Allow" selection switch on the left side of the console: connected to state 0;

[0055] Select the switch in the middle of the operating console to connect the "debugging part" circuit and prepare to debug the initial voltage, drop voltage, and recovery voltage;

[0056] In the voltage adjustment section of the console:

[0057] Adjust the drop voltage of U1, turn the selector switch of T1 to "1" to connect the U1 adjustment circuit, the T1 indicator light is on, intermittently press the boost button, then observe the voltmeter VT1 display of the U1 part, and slowly adjust the voltage to the target value. If the adjustment is higher than the target value, intermittently press the buck button for fine-tuning until it is adjusted to the target value and stabilizes;

[0058] Adjust the initial voltage of U1+U2, turn the selector switch under T2 to "1" to connect the U2 adjustment circuit, the T2 indicator light is on, intermittently press the boost button, then observe the voltage meter VT2 display of the U2 part, and slowly adjust the voltage to the target value. If the adjustment is higher than the target value, intermittently press the voltage drop button for fine-tuning until it is adjusted to the target value and stabilizes. At this time, the VT meter displays U1+U2, which is the initial voltage value;

[0059] Adjust U1+U3 to restore the voltage. Turn the selector switch under T3 to "1" to connect the U3 adjustment circuit. The T3 indicator light is on. Press the boost button intermittently. At this time, observe the voltmeter VT3 display on the U3 part and slowly adjust the voltage to the target value. If the adjustment is higher than the target value, press the depressurization button intermittently for fine-tuning until it is adjusted to the target value and stabilizes. At this time, the VT meter displays U1+U3, which is the restored voltage value.

[0060] 3. Test connection:

[0061] Turn on the middle selector switch on the operating console to connect the "test part" circuit, and turn all three selector switches under T1-3 to "0";

[0062] 4. Install the test sample:

[0063] Connect the voltage input terminal of the test sample to the 1-way test interface on the lower right side of the cabinet, connect the red terminal to the incoming line and the black terminal to the outgoing line;

[0064] 5. Connect to the oscilloscope:

[0065] Connect the ground terminal and measuring terminal of the main measuring channel of the oscilloscope to the incoming and outgoing terminals of the operating pole of the tested electrical appliance respectively;

[0066] 6. Set the time:

[0067] "Allow" selection switch on the left side of the console: connected to state 1;

[0068] Click the touch screen to enter the PLC debugging panel;

[0069] To set the initial time, directly touch the screen to input the time value;

[0070] To set the drop time, directly enter the time value on the touch screen;

[0071] 7. Start operation:

[0072] Oscilloscope acquisition: Adjust the measurement parameters on the oscilloscope panel, turn on the signal capture mode, and click Run Single Acquisition to start electrical signal acquisition;

[0073] Then press the start button on the touch screen to start the control circuit operation;

[0074] 8. Stop the test and read the results:

[0075] During the test, record the operating status of the tested product: flashing, restored to normal, disconnected and not restored, etc.

[0076] After the power shake fault recovery time runs for a period of time, press the stop button on the touch screen to stop the control line operation;

[0077] At this point, the oscilloscope's display screen records the test product's electrical signals. By turning the knob, moving the cursor, etc., you can measure the time it takes for the test product to resume operation after a power outage following a power shake.

[0078] 9. Shutdown and tidy up:

[0079] "Allow" selection switch on the left side of the console: connected to state 0;

[0080] Open the main circuit breaker in the cabinet and unplug the power to cut off the power;

[0081] Remove the oscilloscope measurement cables and dismantle the sample;

[0082] Timing function control operation:

[0083] 1. Test bench setting:

[0084] Select an appropriate test environment, fix the mobile hub, plug the left side of the electrical anti-sway function test system cabinet into the three-hole socket to power on, and close the main circuit breaker in the cabinet;

[0085] 2. Control line access:

[0086] Connect the control line port to the red and black terminal blocks at the rear of the cabinet as needed;

[0087] 3. Touch screen settings:

[0088] On page 3, DQa.4, DQa.5, DQa.6, DQa.7, DQb.0, and DQb.1 control six channels. These six channels can be used individually to control the on / off of a circuit, or they can be used together to control the on / off of multiple circuits according to a set timing.

[0089] For single-channel use, take channel DQa.4 as an example. Set the time when the circuit is connected through the touch screen connection setting, set the length of the connection time through the touch screen connection setting, select DQa.4 channel as allowed through the channel enable button, and then start control by pressing the start button on the touch screen.

[0090] For multi-channel coordination, take channels DQa.4 and DQa.5 as an example. Enter 100ms for the DQa.4 connection setting and 50ms for the connection time setting. Enter 200ms for the DQa.5 connection setting and 50ms for the connection time setting to control the on-off time of the two circuits. DQa.4 controls one circuit to be connected at 100-150ms, and DQa.5 controls the other circuit to be connected at 200-250ms.

[0091] In page 4, DQb.2 and DQb.3 control two channels;

[0092] In single operation, take DQb.2 channel control as an example. On the touch screen, directly input 100ms in the input box below "Connect 1", 50ms in the input box below "Connect 1 Time", 100ms in the input box below "Connect 2", and 50ms in the input box below "Connect 2 Time".

[0093] Indicates that timing starts from the start of PLC, 0-100ms, DQb.2 channel is not connected, 100ms-150ms, DQb.2 channel is connected, 150-250ms, DQb.2 channel is not connected, 250ms-300ms, DQb.2 channel is connected, DQb.2, DQb.3 can enter 4 connection times;

[0094] During cyclic operation, directly input the values ​​of "Cycle Period" and "Total Number of Cycles" into the input boxes on the touch screen. For example, if you input "Cycle Period" as 5s and "Total Number of Cycles" as 2, it means that the time will be controlled according to the DQb.2 channel, and the system will cycle once every 5s and stop output after 2 cycles.

[0095] 4. Start operation:

[0096] Press the start button on the touch screen to start the control circuit operation;

[0097] 5. Stop the test:

[0098] Press the stop button on the touch screen to stop the control line operation;

[0099] 6. Shutdown and tidy up:

[0100] "Allow" selection switch on the left side of the console: connected to state 0;

[0101] Open the main circuit breaker in the cabinet and unplug the power to cut off the power;

[0102] Remove the sample.

[0103] The above shows and describes the basic principles, main features, and advantages of the present invention. The various components mentioned in the present invention are conventional technologies in the prior art. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for simulating and measuring electric sloshing waveforms with sequential output, characterized in that: It includes a cabinet, an operating table, a main voltage output unit, and a PLC control unit. The cabinet is divided into two parts, the upper half of the cabinet is provided with an operating table, and the lower half of the cabinet is hollow. The main voltage output unit is provided inside the cabinet, and the PLC control unit is provided inside the cabinet. The main voltage output unit is used to build a voltage output control circuit, including three voltage-regulating transformers and three isolation transformers. Each voltage-regulating transformer and each isolation transformer form a voltage output, a total of three groups, and are connected in series. There is a voltmeter in each group for displaying voltage values, namely VT1, VT2, and VT3, and the displayed voltage values ​​are U1, U2, and U3, respectively, where U1 is used to indicate the drop voltage in timing control, U1 plus U2 is used to indicate the initial voltage in timing control, and U1 plus U3 is used to indicate the recovery voltage in timing control. Each group of voltage is equipped with motor adjustment, and the input and output ends of the three groups are electrically connected to the PLC control unit.

2. The device for simulating and measuring electric sloshing waveforms with sequential output according to claim 1, characterized in that: The bottom of the cabinet is provided with a movable hub, and the cabinet is provided with front and rear cabinet doors with output interface openings. The lower half of the cabinet is provided with a mounting bracket inside, and the mounting bracket is provided with a main voltage output unit.

3. The device for simulating and measuring electric sloshing waveforms with sequential output according to claim 2, characterized in that: The operating table is equipped with a touch screen, a boost button, a buck button, an oscilloscope, an installation panel, a control button, a selection switch, a green indicator light, and a connection terminal. A boost button, a buck button, a green indicator light, and a selection switch constitute a voltage regulation group, with a total of three groups, which are electrically connected to three voltage regulating transformers respectively. The touch screen is electrically connected to the PLC control unit.

4. The device for simulating and measuring electric sloshing waveforms with sequential output according to claim 3, characterized in that: The PLC control unit includes SIMATIC S7-200SMART, CPUSR30 PLC controller, MEANWELLED R-120-2424V power supply, iC65NC6A2P miniature circuit breaker, LC1D1212A AC contactor, RT28-32 fuse, RXM2LB2BD relay, and is electrically connected through wires.

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