A test equipment automatic regulation method, system, device and medium

Abstract

The application provides a test equipment automatic regulation method, system, device and medium, and belongs to the technical field of equipment regulation. Step S1: an output current value of a voltage regulator is collected, and a current change slope of the output current is calculated based on the output current value of the voltage regulator; step S2: the current change slope is taken as a criterion, a direct current motor is driven to continuously adjust a core gap of a compensation reactor, so that the current change slope tends to zero, and reactive power compensation control is realized; step S3: a high-voltage voltage at a high-voltage side of a test transformer is collected, and a high-voltage voltage change is calculated based on the high-voltage voltage at the high-voltage side of the test transformer; step S4: a loop after the reactive power compensation control is used to predict a high-voltage voltage increment of a next voltage boosting stage based on the high-voltage voltage change, and the motor speed and the motor action time of the voltage regulator are controlled in sections, so that the high-voltage voltage is stabilized to a target value. The high-voltage voltage is quickly and stably stabilized to the target value.

Description

Technical Field

[0001] This invention belongs to the field of equipment control technology, and in particular relates to an automatic control method, system, equipment and medium for experimental equipment. Background Technology

[0002] With the increasing demand for testing high-voltage electrical equipment, voltage transformers, GIS circuit breakers, capacitors, and other tested items need to undergo power frequency withstand voltage tests within the range of 0–1500 kV. To improve testing efficiency and safety, the industry generally requires testing equipment to have automatic voltage boosting and reactive power compensation functions, and to maintain minimum current, accurate voltage, and no overshoot throughout the entire process.

[0003] Existing technologies typically employ multi-tap compensation reactors in conjunction with traditional PID control or BP neural network PID control optimized by a swarm spider algorithm to control the voltage regulator motor. At the start of the test, the reactor is switched on and off at fixed taps. Then, the voltage regulator output is adjusted based on the deviation between the real-time voltage on the high-voltage side and the target value, gradually increasing the voltage to the set value and maintaining it within the allowable error band. For reactive power compensation, existing solutions approximate the capacitive load by switching different taps, while using the voltage regulator output current amplitude as the criterion for determining whether compensation is complete. When the current drops to an empirical threshold, compensation is considered complete, and the system then enters a pure voltage boost phase.

[0004] However, the above method can only achieve limited discrete level adjustment in the reactive power compensation stage, and cannot continuously change the inductance, which makes it difficult for the slope of the voltage regulator output current change to converge to zero, thus limiting the compensation accuracy. At the same time, in the boost stage, feedback control is only based on the current voltage deviation, lacking a means to predict the high voltage increment in the next boost stage, and the speed and action time of the voltage regulator motor are not set in segments, which can easily lead to high voltage overshoot or excessively long time to reach the target value. Summary of the Invention The present invention provides an automatic control method, system, device and medium for experimental equipment, so as to at least solve the above-mentioned problems.

[0005] In a first aspect, embodiments of this application provide an automatic control method for experimental equipment, the method comprising: Step S1: Collect the output current value of the voltage regulator, and calculate the current change slope of the output current based on the output current value of the voltage regulator; Step S2: Using the slope of the current change as a criterion, drive the DC motor to continuously adjust the core gap of the compensation reactor so that the slope of the current change approaches zero, thereby achieving reactive power compensation control. Step S3: Collect the high voltage on the high voltage side of the test transformer, and calculate the change in high voltage on the high voltage side of the test transformer; Step S4: Using the circuit after reactive power compensation control, predict the high voltage increment of the next voltage boosting stage based on the high voltage change, and control the motor speed and motor action time of the voltage regulator in segments to stabilize the high voltage to the target value.

[0006] Further, in step S1, the output current value of the voltage regulator is acquired, and the slope of the current change of the output current is calculated based on the output current value of the voltage regulator, specifically including: Step S1-1: Acquire the output current value of the voltage regulator from the previous current sampling cycle. ; Step S1-2: Acquire the output current value of the voltage regulator during the current current sampling period. ; Step S1-3: Output current value of the voltage regulator based on the previous current sampling cycle. and the output current value of the voltage regulator during the current sampling period. Calculate the slope of the output current change. Its expression is:

[0007] In the formula, The slope of the output current change. This is the output current value of the voltage regulator during the current sampling period. This is the output current value of the voltage regulator in the previous current sampling cycle.

[0008] Further, in step S2, the slope of the current change is used as a criterion to drive the DC motor to continuously adjust the core gap of the compensating reactor, so that the slope of the current change tends to zero, thereby achieving reactive power compensation control. Specifically, this includes: Step S2-1: Set the current change slope threshold ; Step S2-2: Calculate the slope of the current change. Compared with the set current change slope threshold When comparing, At that time, the DC motor is driven at the first speed to increase the core gap of the compensating reactor. At that time, the DC motor is driven at a second speed to increase the core gap of the compensating reactor; Step S2-3: During the core gap adjustment process of the compensating reactor, continuously update the slope of the calculated current change. until the slope of the current change If the value approaches zero, then the reactive power compensation is considered complete.

[0009] Furthermore, the first speed is The second speed is , .

[0010] Further, in step S3, the high-voltage voltage on the high-voltage side of the test transformer is collected, and the change in high-voltage voltage on the high-voltage side of the test transformer is calculated, specifically including: Step S3-1: Set the motor operating time ; Step S3-2: Based on the motor's operating time The high voltage sampling period is used to collect the high voltage on the high voltage side of the test transformer. Step S3-3: Record the high voltage on the high voltage side of the test transformer from the previous high voltage sampling period as... ; Step S3-4: Record the high voltage on the high voltage side of the test transformer during the current high voltage sampling period as follows: ; Step S3-5: High voltage on the high voltage side of the test transformer based on the previous high voltage sampling cycle. The high voltage on the high voltage side of the test transformer during the current high voltage sampling period. Calculate the motor's operating time High voltage change on the high voltage side of the internal test transformer Its expression is:

[0011] in, Indicates the motor's operating time The change in high-voltage voltage on the high-voltage side of the internal test transformer. This represents the high-voltage voltage on the high-voltage side of the test transformer during the previous high-voltage voltage sampling period. This indicates the high voltage on the high voltage side of the test transformer during the current high voltage sampling period.

[0012] Further, in step S4, using the circuit after reactive power compensation control, the high voltage increment of the next boost stage is predicted based on the high voltage change, and the motor speed and motor action time of the voltage regulator are controlled in segments to stabilize the high voltage to the target high voltage value. Specifically, this includes: Step S4-1: Divide the boost process into the first boost stage. Second boost stage First boost stage Second boost stage Each stage is divided into several boost sub-stages; Step S4-2: Set the target high voltage value for the boost process, including the first boost stage. The first target high voltage value, the second boost stage The second target high voltage value; Step S4-3: First boost stage Boost to the first target high voltage value Second boost stage Boost to the second target high voltage value ; Step S4-4: First boost stage In the middle, the speed of the voltage regulator motor adopts the first speed. After each boost stage, the motor operating time for the next boost stage is adjusted by calculating the correction time. This allows the high voltage to reach the first target high voltage value within several boost stages. Its expression is:

[0013] in, Indicates the correction time. Indicates the motor's operating time. This indicates the first target high voltage value. This indicates the current high voltage value. This represents the change in high-voltage voltage during the first boost stage. This indicates the number of boost sub-stages, i.e., the first boost stage. The number of times the pressure is increased; Step S4-5: The high voltage reaches the first target high voltage value. Then, it enters the second pressurization stage. Second boost stage In the middle, the voltage regulator motor speed adopts the second speed. The fuzzy incremental PID algorithm is used to calculate the motor action time. To ensure the second boost stage Boost to the second target high voltage value .

[0014] Furthermore, the expression for the fuzzy incremental PID algorithm is:

[0015]

[0016] in, For the first The output after the second sampling This is the proportionality coefficient. The integral coefficient is... The differential coefficients are... for Timing deviation, for Timing deviation, for Timing deviation, for The increment of the controlled parameter at any given time.

[0017] Secondly, embodiments of this application also provide a system applied to the automatic control method for experimental equipment as described in the above aspects, the system comprising: The current acquisition module acquires the output current value of the voltage regulator and calculates the slope of the current change based on the output current value of the voltage regulator. The reactive power compensation module uses the slope of current change as a criterion to drive the DC motor to continuously adjust the core gap of the compensation reactor, so that the slope of current change tends to zero, thereby achieving reactive power compensation control. The voltage acquisition module acquires the high voltage on the high voltage side of the test transformer and calculates the change in high voltage. The voltage regulation module uses the circuit after reactive power compensation control to predict the voltage increment of the next voltage boost stage based on the voltage change. It then controls the motor speed and motor action time of the voltage regulator in segments to stabilize the high voltage to the target value.

[0018] Thirdly, an electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the steps of the automatic control method for the test equipment as described in the preceding aspects.

[0019] Fourthly, a storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the automatic control method for the experimental equipment as described in the preceding aspects.

[0020] As can be seen from the above technical solutions, the present invention has the following advantages: The automatic control method for test equipment provided in this application collects the output current value of the voltage regulator in real time and calculates the slope of the current change. Using this slope as a criterion, the DC motor is driven to continuously adjust the core gap of the compensation reactor, so that the slope of the current change tends to zero. This solves the problem of insufficient compensation accuracy of multi-stage reactors and realizes high-precision reactive power compensation control.

[0021] This application solves the overshoot problem caused by the failure to predict voltage changes in real time during the voltage boosting process by collecting the voltage on the high-voltage side of the test transformer and calculating the voltage change, thereby predicting the voltage increment in the next stage. It also controls the speed and action time of the voltage regulator motor in stages, thus achieving a rapid and stable attainment of the target voltage.

[0022] This application solves the problem of balancing response speed and stability during compensation adjustment by comparing the slope of current change with a set threshold and driving a DC motor at different speeds to adjust the core gap based on the comparison result. This achieves efficient control with rapid adjustment in the early stage of compensation and fine adjustment in the later stage.

[0023] This application utilizes the circuit after reactive power compensation control to collect and predict high voltage changes, overcoming the limitations of traditional methods that do not combine the state of the compensated circuit for boost control. This achieves boost process regulation that is more in line with actual working conditions, further improving the reliability of the automatic control of the entire test equipment. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a flowchart of the automatic control method for the test equipment of the present invention.

[0026] Figure 2 This is the wiring diagram of the main circuit of the test equipment of the present invention.

[0027] Figure 3 This is a graph showing the trend of the output current of the voltage regulator of the present invention changing from uncompensated to appropriately compensated.

[0028] Figure 4 This is a schematic diagram of the control principle of the fuzzy incremental PID algorithm of the present invention.

[0029] Attached reference numerals: 1-Voltage regulator, 2-Compensating reactor, 3-Test transformer, 4-Test sample, 5-Equipment grounding. Detailed Implementation

[0030] To make the purpose, features, and advantages of this application more apparent and understandable, specific embodiments and accompanying drawings will be used to clearly and completely describe the technical solution protected by this application. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this patent.

[0031] This application provides an automatic control method, system, device, and medium for experimental equipment, addressing the urgent technical problem of achieving rapid and stable attainment of target values ​​for high voltage.

[0032] The technical solutions proposed in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0033] Figure 1 A flowchart illustrating an automatic control method for experimental equipment provided in this application embodiment. Figure 1 As shown in the figure, an automatic control method for experimental equipment provided in this application embodiment specifically includes the following steps: Step S1: Collect the output current value of voltage regulator 1, and calculate the current change slope of the output current based on the output current value of voltage regulator 1; In step S1, the output current value of voltage regulator 1 is collected, and the slope of the current change of the output current is calculated based on the output current value of voltage regulator 1. Specifically, this includes: Step S1-1: Acquire the output current value of voltage regulator 1 in the previous current sampling cycle. ; Step S1-2: Acquire the output current value of voltage regulator 1 during the current current sampling period. ; Step S1-3: Output current value based on the voltage regulator 1 output in the previous current sampling cycle. and the output current value of voltage regulator 1 during the current sampling period Calculate the slope of the output current change. Its expression is:

[0034] In the formula, The slope of the output current change. This is the output current value of the voltage regulator during the current sampling period. This is the output current value of the voltage regulator in the previous current sampling cycle.

[0035] The instantaneous value of the output current of voltage regulator 1 is obtained with a fixed current sampling period, and the current difference between adjacent periods is calculated based on the output current value. The current difference between adjacent periods is used as the slope of the output current change. .

[0036] Step S2: Using the slope of the current change as a criterion, drive the DC motor to continuously adjust the core gap of the compensation reactor 2 so that the slope of the current change approaches zero, thereby achieving reactive power compensation control. In step S2, using the slope of the current change as a criterion, the DC motor is driven to continuously adjust the core gap of the compensating reactor 2, so that the slope of the current change approaches zero, thereby achieving reactive power compensation control. Specifically, this includes: Step S2-1: Set the current change slope threshold ; Step S2-2: Calculate the slope of the current change. Compared with the set current change slope threshold When comparing, At that time, the DC motor is driven at the first speed to increase the core gap of the compensating reactor 2. At that time, the DC motor is driven at the second speed to increase the core gap of the compensating reactor 2; Step S2-3: During the core gap adjustment process of the compensating reactor 2, continuously update the slope of the calculated current change. until the slope of the current change If the value approaches zero, then the reactive power compensation is considered complete.

[0037] Based on the above method, this application can automatically adjust the inductance value of the compensation reactor 2; and take into account the influence of the inductance value of the compensation reactor 2 on the voltage boosting speed, thereby controlling the voltage regulator 1 to achieve automatic voltage boosting.

[0038] This application adjusts the inductance value of the compensating reactor 2 by changing the size of the core gap. Specifically, the core gap is adjusted using a DC motor-controlled internal mechanical structure. This application enables continuous adjustment of the core gap of the compensating reactor 2, thereby continuously adjusting its inductance value and precisely adjusting it to the appropriate inductance value required for reactive power compensation.

[0039] It should be noted that the compensation principle of compensating reactor 2 is parallel resonance. Figure 2 This is the wiring diagram of the main circuit of the test equipment in this application, combined with... Figure 2 Compensating reactor 2 is located on the low-voltage input side of test transformer 3. In this circuit, 1 is the voltage regulator, 2 is the compensating reactor, 3 is the test transformer, 4 is the test object, and 5 is the equipment grounding. Compensating reactor 2 is on the low-voltage side, and the test object 4 is on the high-voltage side, achieving "equivalent parallel connection" through the electromagnetic coupling of test transformer 3. The small inductance on the low-voltage side, through the transformer's step-up effect, is equivalent to a large inductance on the high-voltage side. The inductive and capacitive reactive power on the high-voltage side cancel each other out, requiring only a small amount of active current to be drawn from the low-voltage power supply, which is the output current of voltage regulator 1. Therefore, when compensating reactor 2 and the test object 4 are approximately completely canceled out, the output current of voltage regulator 1 is minimized. Based on this logic, the inductance value of compensating reactor 2 can be flexibly adjusted for test objects 4 with different capacitance values.

[0040] Combination Figure 3 The output current of voltage regulator 1 changes from uncompensated to appropriately compensated in a non-linear curve, as shown in the following trend: Figure 3 The trend of the descending curve in the upper half of the hyperbola indicates that the output current of voltage regulator 1 changes from a rapid decrease to a slow decrease.

[0041] To address the characteristic of the output current of the voltage regulator changing from uncompensated to appropriately compensated, an automatic adjustment compensation control method is proposed to quickly and accurately adjust the inductance value of the compensation reactor 2. This automatic control method consists of three stages: Step 1: Automatically boost the voltage of regulator 1 to 100kV; Step 2: Increase the core gap of the compensating reactor 2 to drive the motor to rotate; record the output current value of the voltage regulator 1 in real time. Step 3: Record the output current value of regulator 1 from the previous current sampling cycle as... And record the output current of voltage regulator 1 in the current current sampling period as The output current value of regulator 1 based on the previous current sampling cycle. and the output current value of voltage regulator 1 during the current sampling period Calculate the slope of the output current change. Its expression is:

[0042] In the formula, The slope of the output current change. This is the output current value of the voltage regulator during the current sampling period. This is the output current value of the voltage regulator in the previous current sampling cycle.

[0043] in accordance with Figure 3 The hyperbolic trend shows that when the compensation reactor 2 was adjusted in the early stage, the slope of the output current change was... The slope of the output current change is relatively large when the compensation reactor 2 is adjusted later. It gets smaller and smaller until the slope of the output current change is smaller. Approaching 0; based on this characteristic, a threshold value for the slope of the current change is set. Used to distinguish the adjustment speed of compensation reactor 2, when At that time, the DC motor is driven at the first speed to increase the core gap of the compensating reactor 2; when At that time, the DC motor is driven at the second speed to increase the core gap of the compensating reactor 2 until the slope of the output current change is increased. When the value approaches 0, the automatic compensation adjustment ends.

[0044] Regarding the values ​​of the first and second speeds, it should be noted that the speed is adjusted according to the DC motor's power supply voltage. Here, the speed is set to two levels: the first speed is faster and is used to supply 120V DC power to the DC motor; the second speed is slower and is used to supply 40V DC power to the DC motor.

[0045] Taking the entire stroke of the compensating reactor 2 as 100%, the first speed is 1.5% per second, and the second speed is 0.8% per second.

[0046] The first speed is The second speed is , Among them, the first speed With the second speed The switching is achieved by a sudden change in the PWM duty cycle, with the change in duty cycle amplitude being greater than 30%.

[0047] Step S3: Collect the high voltage on the high voltage side of test transformer 3, and calculate the change in high voltage on the high voltage side of test transformer 3; In step S3, the high-voltage voltage on the high-voltage side of test transformer 3 is collected, and the change in high-voltage voltage on the high-voltage side of test transformer 3 is calculated, specifically including: Step S3-1: Set the motor operating time ; Step S3-2: Based on the motor's operating time The high voltage sampling period is used to collect the high voltage on the high voltage side of test transformer 3; Step S3-3: Record the high voltage on the high voltage side of the test transformer 3 from the previous high voltage sampling cycle as follows: ; Step S3-4: Record the high voltage on the high voltage side of test transformer 3 during the current high voltage sampling period as follows: ; Step S3-5: High voltage on the high voltage side of test transformer 3 based on the previous high voltage sampling cycle. The high voltage on the high voltage side of test transformer 3 during the current high voltage sampling period. Calculate the motor's operating time High voltage variation on the high voltage side of internal test transformer 3 Its expression is:

[0048] in, Indicates the motor's operating time The change in high-voltage voltage on the high-voltage side of the internal test transformer 3. This indicates the high voltage on the high voltage side of test transformer 3 during the previous high voltage sampling period. This indicates the high voltage on the high voltage side of test transformer 3 during the current high voltage sampling period.

[0049] Step S4: Using the circuit after reactive power compensation control, predict the high voltage increment of the next boost stage based on the high voltage change, and control the motor speed and motor action time of voltage regulator 1 in segments to stabilize the high voltage to the target value.

[0050] In step S4, the circuit after reactive power compensation control is used to predict the high voltage increment in the next boost stage based on the high voltage change. The motor speed and motor action time of voltage regulator 1 are controlled in segments to stabilize the high voltage to the target high voltage value. Specifically, this includes: Step S4-1: Divide the boost process into the first boost stage. Second boost stage First boost stage Second boost stage Each stage is divided into several boost sub-stages; Step S4-2: Set the target high voltage value for the boost process, including the first boost stage. The first target high voltage value, the second boost stage The second target high voltage value; It should be noted that the target high-voltage value varies depending on actual needs, and is assumed to be 500kV, 800kV, or 1000kV. When the system steps up the voltage of a 500kV voltage transformer, it needs to be stepped up to 740kV. When the system steps up the voltage of an 800kV voltage transformer, it needs to be stepped up to 820kV to protect the entire system.

[0051] Step S4-3: First boost stage Boost to the first target high voltage value Second boost stage Boost to the second target high voltage value ; Step S4-4: First boost stage In the middle, the motor speed of voltage regulator 1 adopts the first speed. After each boost stage, the motor operating time for the next boost stage is adjusted by calculating the correction time. This allows the high voltage to reach the first target high voltage value within several boost stages. Its expression is:

[0052] in, Indicates the correction time. Indicates the motor's operating time. This indicates the first target high voltage value. This indicates the current high voltage value. This represents the change in high-voltage voltage during the first boost stage. This indicates the number of boost sub-stages, i.e., the first boost stage. The number of times the pressure is increased; Step S4-5: The high voltage reaches the first target high voltage value. Then, it enters the second pressurization stage. Second boost stage In the middle, the motor speed of voltage regulator 1 adopts the second speed. The fuzzy incremental PID algorithm is used to calculate the motor action time. To ensure the second boost stage Boost to the second target high voltage value .

[0053] The expression for the fuzzy incremental PID algorithm is:

[0054]

[0055] in, For the first The output after the second sampling This is the proportionality coefficient. The integral coefficient is... The differential coefficients are... for Timing deviation, for Timing deviation, for Timing deviation, for The increment of the controlled parameter at any given time.

[0056] The voltage regulator 1 in the test equipment has the following characteristics: a) When the test equipment is not compensated, the voltage regulator 1 adjusts the high voltage of the test transformer 3 rapidly. When under load and the compensation reactor 2 has inductance, the voltage regulation speed becomes slower. The voltage regulation speed is different for different test objects 4 and compensation conditions.

[0057] b) The test voltage of the test sample 4 is not allowed to have overshoot, that is, the automatic voltage boost must not exceed the target voltage.

[0058] c) From the time the voltage regulator 1 actually issues the action to the time the peak voltage meter displays the high voltage value, the process cannot achieve very fast real-time performance and there is a certain delay in the actual process.

[0059] To address the aforementioned characteristics and ensure a safe, rapid, and accurate boosting process, this invention combines a trend-based dynamic adjustment method with a fuzzy PID algorithm. The method incorporates the following definitions: a) Automatic voltage boosting control uses motor action time To avoid overshoot during the voltage boosting phase, the motor's operating time will be calculated. The change in high voltage within the internal high voltage range Motor operating time during the first boost phase The change in high voltage within the internal high voltage range The motor operating time during the first boost stage The change in high voltage within the internal high voltage range Set as motor action time The predicted increase in pressure during the next boost phase, and the predicted increase in pressure during the nth boost phase. .

[0060] b) In order to accurately adjust the value of the high voltage, the motor speed of voltage regulator 1 is divided into a first speed. Second speed Two gears.

[0061] c) To flexibly adjust the motor's operating time The boost phase is divided into two stages, the first boost phase. Second boost stage .

[0062] The method of the present invention will incorporate the motor action time. First speed Second speed First boost stage Second boost stage An automatic boost control method is proposed, which controls the motor speed and action time based on the boost trend.

[0063] a) First boost stage: During the first boost stage, the motor defaults to the first speed. After automatic boosting begins, the motor will be controlled according to the motor's action time. Motor stop time After the first voltage boost is completed, the change in high voltage during the first voltage boost phase is calculated. The calculation determines how many voltage boosts are needed to reach the target voltage of the first boost stage; to improve the boost speed, the number of boosts is specified and set as follows. That is to The voltage will be boosted to the first target high voltage value within one cycle. .

[0064] current After several attempts, the voltage is less than the first target high-voltage value. This means adjusting the motor's operating time. Extend the time. The calculation will be based on the following formula:

[0065] in, For this high voltage value, we obtain Then, during the next pressurization, the time will be... Increase , For the number of pressurization cycles, Motor operating time The predicted boost pressure within the range, The target voltage.

[0066] As currently After several attempts, the voltage exceeded the first target high-voltage value. That is, before boosting the voltage to the final value, calculate the current voltage value and... The sum of the values ​​and the first target high voltage value The gap Is it less than This ensures that the rapid voltage increase during the first boost stage does not exceed the target voltage value.

[0067] b) Second boost stage: After the first boost stage where the voltage is increased to a high level at the first speed, the second boost stage requires precise and stable voltage increase to the target voltage value. Therefore, the motor speed is adjusted to the second speed, and the remaining voltage value is controlled by a fuzzy incremental PID algorithm to control the motor's action time. accomplish.

[0068] The fuzzy incremental PID algorithm adds fuzzy control to the incremental PID calculation method. The formula for the incremental PID algorithm is as follows:

[0069]

[0070] in, For the first The output after the second sampling This is the proportionality coefficient. The integral coefficient is... The differential coefficients are... for Timing deviation, for Timing deviation, for Timing deviation, for The increment of the controlled parameter at any given time.

[0071] Incremental calculations do not require accumulating all deviations; they only need to calculate the deviations of the three most recent deviations. This method has advantages such as low computational load, low controller load, and high calculation accuracy. However, there is a possibility of overshoot. To avoid overshoot, the formula above... This is the proportionality coefficient. The integral coefficient is... To combine differential coefficients with fuzzy control, the following is introduced: , , , respectively corresponding , , The change value.

[0072] In the above formula, the output is the motor's operating time. To avoid overshoot, a limit is added after the fuzzy incremental PID output time, which follows the same trend as the first boost stage calculation. The motor's operating time for the next boost is calculated each time the motor stops. The predicted boost pressure value is within the range; if the predicted boost pressure value exceeds... Then, according to the formula:

[0073] In the style Set to 1 to calculate the extension time. This value is set to be obtained by fuzzy incremental PID calculation. The upper limit of the value ensures that there is no overshoot.

[0074] The voltage value is stabilized at [ using the above method] , Within the range.

[0075] In practice, 1) Prepare the experimental equipment for the experiment; 2) Set the target voltage value to 1000kV and set the motor operating time. The motor stop time is 10 seconds. For 3 seconds, the first target high voltage value It is 800kV; 3) Start the automatic testing process; 4) The system uses an automatic voltage regulation control method to boost the voltage to 100kV; 5) Automatic compensation is performed. When the slope of the output current of voltage regulator 1 approaches 0, the compensation adjustment ends. 6) Continue to increase the voltage according to the automatic voltage regulation control method until the first target high voltage value is reached. The voltage was then increased to 1000kV. 7) The tester selects a pressure resistance time of 1 minute; 8) After the withstand voltage test is completed, the automatic voltage adjustment ends, and the system automatically reduces the voltage to 0. 9) After the value drops to 0, the system trips, and the test ends.

[0076] This invention also provides an automatic control system for experimental equipment, the system comprising: The current acquisition module acquires the output current value of voltage regulator 1 and calculates the current change slope of the output current based on the output current value of voltage regulator 1. The reactive power compensation module uses the slope of current change as a criterion to drive the DC motor to continuously adjust the core gap of the compensation reactor 2, so that the slope of current change tends to zero, thereby achieving reactive power compensation control. The voltage acquisition module acquires the high voltage on the high voltage side of test transformer 3 and calculates the change in high voltage on the high voltage side of test transformer 3. The voltage regulation module uses the circuit after reactive power compensation control to predict the voltage increment of the next voltage boosting stage based on the voltage change. It then controls the motor speed and motor action time of the voltage regulator 1 in segments to stabilize the high voltage to the target value.

[0077] The automatic control method for experimental equipment provided in this application can be applied to electronic devices. Those skilled in the art will understand that the electronic device structure involved in the embodiments of this invention does not constitute a limitation on the electronic device. An electronic device may include more or fewer components than illustrated, or combine certain components, or have different component arrangements. In the embodiments of this invention, the electronic device includes, but is not limited to, laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the embodiments of this application described and / or claimed herein.

[0078] Electronic devices may include processors, external memory interfaces, internal memory, universal serial bus (USB) interfaces, charging management modules, power management modules, batteries, wireless communication modules, audio modules, speakers, microphones, sensor modules, buttons, cameras, displays, and SIM card interfaces, etc.

[0079] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the electronic device. In other embodiments of this application, the electronic device may include more or fewer components than illustrated, or combine some components, or split some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0080] A processor may include one or more processing units, such as: a central processing unit (CPU), an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processing unit (NPU). Different processing units may be independent devices or integrated into one or more processors.

[0081] The processor can serve as the nerve center and command center of an electronic device. The controller can generate operation control signals based on the instruction opcode and timing signals to control the fetching and execution of instructions.

[0082] The processor may also include memory for storing instructions and data. In some embodiments, the memory in the processor is a cache memory. This memory can store instructions or data that the processor has just used or that are used repeatedly. If the processor needs to use the instruction or data again, it can retrieve it directly from this memory. This avoids repeated accesses, reduces processor latency, and thus improves system efficiency.

[0083] An external storage interface (ESI) can be used to connect external memory cards, such as microSD cards, to expand the storage capacity of electronic devices. The external memory card communicates with the processor through the ESI to perform data storage functions, such as saving music and video files on the external memory card.

[0084] Internal memory can be used to store computer executable program code, which includes instructions. The processor executes various functional applications and data processing of electronic devices by running the instructions stored in internal memory. Internal memory can include a program storage area and a data storage area. Internal memory can include high-speed random access memory, and can also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc.

[0085] Wireless communication functionality in electronic devices can be achieved through antennas, wireless communication modules, modem processors, and baseband processors.

[0086] Wireless communication modules can provide solutions for wireless communication applications in electronic devices, including wireless local area networks (WLANs) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), and infrared (IR) technologies.

[0087] Electronic devices can implement audio functions through audio modules, speakers, receivers, microphones, headphone jacks, and application processors.

[0088] Electronic devices can achieve shooting functions through ISPs, cameras, video codecs, GPUs, displays, and application processors.

[0089] Electronic devices can achieve display functions through GPUs, displays, and application processors.

[0090] A GPU is a microprocessor for image processing, connected to the display screen and application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering. A processor may include one or more GPUs, which execute program instructions to generate or modify display information.

[0091] A display screen is used to display images, videos, etc. A display screen includes a display panel.

[0092] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0093] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of devices, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0094] In the embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through some interfaces, apparatuses, or units, or they may be electrical, mechanical, or other forms of connection.

[0095] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the invention. However, those skilled in the art will recognize that the technical solutions of the invention can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of the invention.

[0096] The aforementioned electronic equipment realizes the automatic control method of the test equipment in this application, which collects the output current value of the voltage regulator, calculates the current change slope of the output current based on the output current value of the voltage regulator, drives the DC motor to continuously adjust the core gap of the compensation reactor based on the current change slope, so that the current change slope tends to zero, thereby realizing reactive power compensation control; collects the high voltage of the high voltage side of the test transformer, calculates the high voltage change of the high voltage side of the test transformer; and uses the loop after reactive power compensation control to predict the high voltage increment of the next voltage boosting stage based on the high voltage change, controls the motor speed and motor action time of the voltage regulator in segments, stabilizes the high voltage to the target value, and realizes that the high voltage reaches the target value quickly and stably.

[0097] The storage medium provided in this application stores a program product capable of implementing an automatic control method for experimental equipment.

[0098] The automatic control method for the test equipment includes: acquiring the output current value of the voltage regulator, calculating the current change slope of the output current based on the output current value of the voltage regulator; using the current change slope as a criterion, driving the DC motor to continuously adjust the core gap of the compensation reactor so that the current change slope tends to zero, thereby achieving reactive power compensation control; acquiring the high voltage of the high voltage side of the test transformer, calculating the high voltage change amount; using the circuit after reactive power compensation control, predicting the high voltage increment of the next voltage boosting stage based on the high voltage change amount, and controlling the motor speed and motor action time of the voltage regulator in segments to stabilize the high voltage to the target value.

[0099] The automatic control method for test equipment provided in this application collects the output current value of the voltage regulator in real time and calculates the slope of the current change. Using this slope as a criterion, the DC motor is driven to continuously adjust the core gap of the compensation reactor, so that the slope of the current change tends to zero. This solves the problem of insufficient compensation accuracy of multi-stage reactors and realizes high-precision reactive power compensation control.

[0100] This application solves the overshoot problem caused by the failure to predict voltage changes in real time during the voltage boosting process by collecting the voltage on the high-voltage side of the test transformer and calculating the voltage change, thereby predicting the voltage increment in the next stage. It also controls the speed and action time of the voltage regulator motor in stages, thus achieving a rapid and stable attainment of the target voltage.

[0101] This application solves the problem of balancing response speed and stability during compensation adjustment by comparing the slope of current change with a set threshold and driving a DC motor at different speeds to adjust the core gap based on the comparison result. This achieves efficient control with rapid adjustment in the early stage of compensation and fine adjustment in the later stage.

[0102] This application utilizes the circuit after reactive power compensation control to collect and predict high voltage changes, overcoming the limitations of traditional methods that do not combine the state of the compensated circuit for boost control. This achieves boost process regulation that is more in line with actual working conditions, further improving the reliability of the automatic control of the entire test equipment.

[0103] In some possible implementations, the automatic control method for experimental equipment disclosed herein can be implemented as a program product comprising program code that, when the program product is run on a terminal device, causes the terminal device to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this disclosure.

[0104] The storage medium disclosed herein may be any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof.

[0105] 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.

[0106] Any changes, modifications, substitutions, and variations made to the embodiments without departing from the principles and spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. An automatic control method for experimental equipment, characterized in that, The method includes: Step S1: Collect the output current value of the voltage regulator (1), and calculate the current change slope of the output current based on the output current value of the voltage regulator (1); Step S2: Using the slope of the current change as a criterion, drive the DC motor to continuously adjust the core gap of the compensation reactor (2) so that the slope of the current change tends to zero, thereby achieving reactive power compensation control; Step S3: Collect the high voltage on the high voltage side of the test transformer (3), and calculate the change in high voltage on the high voltage side of the test transformer (3); Step S4: Using the circuit after reactive power compensation control, predict the high voltage increment of the next boost stage based on the high voltage change, and control the motor speed and motor action time of the voltage regulator (1) in segments to stabilize the high voltage to the target value.

2. The automatic control method for experimental equipment as described in claim 1, characterized in that, In step S1, the output current value of the voltage regulator (1) is collected, and the slope of the current change of the output current is calculated based on the output current value of the voltage regulator (1), specifically including: Step S1-1: Acquire the output current value of the voltage regulator (1) from the previous current sampling cycle. ; Step S1-2: Acquire the output current value of the voltage regulator (1) during the current current sampling period. ; Step S1-3: Output current value of the voltage regulator (1) based on the previous current sampling cycle and the output current value of the voltage regulator (1) during the current sampling period. Calculate the slope of the output current change. Its expression is: In the formula, The slope of the output current change. This is the output current value of the voltage regulator during the current sampling period. This is the output current value of the voltage regulator in the previous current sampling cycle.

3. The automatic control method for experimental equipment as described in claim 2, characterized in that, In step S2, the slope of the current change is used as a criterion to drive the DC motor to continuously adjust the core gap of the compensation reactor (2) so that the slope of the current change tends to zero, thereby realizing reactive power compensation control. Specifically, this includes: Step S2-1: Set the current change slope threshold ; Step S2-2: Calculate the slope of the current change. Compared with the set current change slope threshold When comparing, At that time, the DC motor is driven at the first speed to increase the core gap of the compensating reactor (2). At that time, the DC motor is driven at the second speed to increase the core gap of the compensating reactor (2); Step S2-3: During the core gap adjustment process of the compensating reactor (2), continuously update the slope of the calculated current change. until the slope of the current change If the value approaches zero, then the reactive power compensation is considered complete.

4. The automatic control method for experimental equipment as described in claim 3, characterized in that, The first speed is The second speed is , .

5. The automatic control method for experimental equipment as described in claim 4, characterized in that, In step S3, the high voltage of the high voltage side of the test transformer (3) is collected, and the change in high voltage is calculated, specifically including: Step S3-1: Set the motor operating time ; Step S3-2: Based on the motor's operating time The high voltage sampling period is used to collect the high voltage on the high voltage side of the test transformer (3); Step S3-3: Record the high voltage on the high voltage side of the test transformer (3) from the previous high voltage sampling cycle as ; Step S3-4: Record the high voltage on the high voltage side of the test transformer (3) during the current high voltage sampling period as ; Step S3-5: High voltage on the high voltage side of the test transformer (3) based on the previous high voltage sampling cycle. The high voltage on the high voltage side of the test transformer (3) during the current high voltage sampling period. Calculate the motor's operating time The change in high voltage on the high voltage side of the internal test transformer (3) Its expression is: in, Indicates the motor's operating time The change in high voltage on the high voltage side of the internal test transformer (3) This indicates the high voltage on the high voltage side of the test transformer (3) in the previous high voltage sampling period. The high voltage on the high voltage side of the test transformer (3) represents the current high voltage sampling period.

6. The automatic control method for experimental equipment as described in claim 5, characterized in that, In step S4, the high voltage increment of the next boost stage is predicted by the high voltage change using the circuit after reactive power compensation control. The motor speed and motor action time of the voltage regulator (1) are controlled in segments to stabilize the high voltage to the target high voltage value. Specifically, this includes: Step S4-1: Divide the boost process into the first boost stage. Second boost stage First boost stage Second boost stage Each stage is divided into several boost sub-stages; Step S4-2: Set the target high voltage value for the boost process, including the first boost stage. The first target high voltage value, the second boost stage The second target high voltage value; Step S4-3: First boost stage Boost to the first target high voltage value Second boost stage Boost to the second target high voltage value ; Step S4-4: First boost stage In the middle, the motor speed of the voltage regulator (1) adopts the first speed. After each boost stage, the motor operating time for the next boost stage is adjusted by calculating the correction time. This allows the high voltage to reach the first target high voltage value within several boost stages. Its expression is: in, Indicates the correction time. Indicates the motor's operating time. This indicates the first target high voltage value. This indicates the current high voltage value. This represents the change in high-voltage voltage during the first boost stage. This indicates the number of boost sub-stages, i.e., the first boost stage. The number of times the pressure is increased; Step S4-5: The high voltage reaches the first target high voltage value. Then, it enters the second pressurization stage. Second boost stage In the middle, the motor speed of the voltage regulator (1) adopts the second speed. The fuzzy incremental PID algorithm is used to calculate the motor action time. To ensure the second boost stage Boost to the second target high voltage value .

7. The automatic control method for experimental equipment as described in claim 6, characterized in that, The expression for the fuzzy incremental PID algorithm is: in, For the first The output after the second sampling This is the proportionality coefficient. The integral coefficient is... The differential coefficients are... for Timing deviation, for Timing deviation, for Timing deviation, for The increment of the controlled parameter at any given time.

8. A system applied to the automatic control method for experimental equipment as described in any one of claims 1-7, characterized in that, The system includes: The current acquisition module acquires the output current value of the voltage regulator (1) and calculates the current change slope of the output current based on the output current value of the voltage regulator (1). The reactive power compensation module uses the slope of the current change as a criterion to drive the DC motor to continuously adjust the core gap of the compensation reactor (2) so that the slope of the current change tends to zero, thereby realizing reactive power compensation control. The voltage acquisition module acquires the high voltage of the high voltage side of the test transformer (3) and calculates the change in high voltage. The voltage regulation module uses the circuit after reactive power compensation control to predict the voltage increment of the next voltage boosting stage based on the voltage change, and controls the motor speed and motor action time of the voltage regulator (1) in segments to stabilize the voltage to the target value.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the automatic control method for the test equipment as described in any one of claims 1-7.

10. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the automatic control method for the test equipment as described in any one of claims 1-7.

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