A control method and device of an intelligent adaptive voltage protector

Abstract

The application provides a control method and device of an intelligent adaptive voltage protector, relates to the technical field of voltage protector control, collects input voltage data of a target voltage protector to obtain a voltage time-varying behavior set; constructs a voltage dynamic tolerance threshold domain according to the voltage time-varying behavior set of the target voltage protector and operation parameters of the target voltage protector, determines a voltage tolerance confidence interval of the target voltage protector through the voltage dynamic tolerance threshold domain; obtains an electrical quality deviation index of the target voltage protector according to the voltage tolerance confidence interval, performs risk prediction on the target voltage protector according to the electrical quality deviation index, obtains a voltage risk label, determines a regulation and control response strategy according to the voltage risk label and a preset risk response, and intelligently regulates and controls the target voltage protector through the regulation and control response strategy. The application can adaptively adjust the protection range according to the operation condition and the voltage dynamic characteristic, and effectively improves the accuracy and reliability of voltage protection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of voltage protector control, and more particularly to a control method and device of an intelligent adaptive voltage protector. BACKGROUND

[0002] The existing voltage protector generally collects input voltage data of the protected device, compares the input voltage data with preset overvoltage and undervoltage threshold values, and triggers protection actions such as power-off, voltage limiting or switching when the voltage exceeds the set range, so as to prevent abnormal voltage from damaging the device. Some devices also combine functions such as timing delay, automatic reset or manual reset to restore device operation after protection is executed, and cooperate with auxiliary detection means such as voltage monitoring and current detection to perform basic real-time monitoring on power supply quality.

[0003] The existing voltage protector generally adopts a protection mode with fixed threshold values, which is difficult to dynamically adjust the protection range according to the power grid operating state, load characteristics and environmental changes. In the scene where voltage fluctuation is frequent or load is sensitive to power quality, misoperation or missed operation may occur. At the same time, the voltage monitoring is mostly based on instantaneous value or simple average value, lacking comprehensive analysis of voltage change trend, amplitude and duration, and unable to realize early prediction and graded response. In addition, the traditional protection strategy is mostly in a single execution mode, lacking differentiated regulation and real-time optimization for different risk levels, resulting in difficulty in balancing the accuracy, timeliness and power supply continuity of protection. Therefore, how to adaptively adjust the protection range according to the operating condition and voltage dynamic characteristics to effectively improve the accuracy and reliability of voltage protection has become a difficult problem faced by the industry. SUMMARY

[0004] The present application provides a control method and device of an intelligent adaptive voltage protector, which can adaptively adjust the protection range according to the operating condition and voltage dynamic characteristics to effectively improve the accuracy and reliability of voltage protection.

[0005] In a first aspect, the present application provides a control method of an intelligent adaptive voltage protector, which includes the following steps:

[0006] Collecting input voltage data of a target voltage protector, extracting time-varying behavior of the input voltage data to obtain a voltage time-varying behavior set of the target voltage protector;

[0007] Obtaining operating parameters of the target voltage protector, and then constructing a voltage dynamic tolerance threshold domain according to the voltage time-varying behavior set of the target voltage protector and the operating parameters of the target voltage protector, and determining a voltage tolerance confidence interval of the target voltage protector through the voltage dynamic tolerance threshold domain;

[0008] The input voltage data of the target voltage protector is monitored according to the voltage tolerance confidence interval, the electrical quality shift index of the target voltage protector is obtained, the risk of the target voltage protector is predicted according to the electrical quality shift index, the voltage risk label of the target voltage protector is obtained, and the regulation and control response strategy of the target voltage protector is determined according to the voltage risk label and a preset risk response.

[0009] The target voltage protector is intelligently regulated and controlled through the regulation and control response strategy.

[0010] In the embodiment, the input voltage data of the target voltage protector is obtained by connecting the AC power input end connected to the target voltage protector to the voltage sampling circuit.

[0011] In the embodiment, the time-varying behavior extraction is performed on the input voltage data to obtain the voltage time-varying behavior set of the target voltage protector, which specifically includes:

[0012] The voltage level, the voltage variability, the voltage kurtosis and the voltage valley of the target voltage protector are determined within a preset time window through the input voltage data.

[0013] The voltage level, the voltage variability, the voltage kurtosis and the voltage valley of the target voltage protector are combined into the voltage time-varying behavior set of the target voltage protector.

[0014] In the embodiment, the voltage dynamic tolerance threshold domain is constructed according to the voltage time-varying behavior set of the target voltage protector and the operating parameters of the target voltage protector, which specifically includes:

[0015] The load sensitivity coefficient of the target voltage protector is determined through the operating parameters of the target voltage protector.

[0016] The upper limit of the voltage dynamic tolerance threshold domain and the lower limit of the voltage dynamic tolerance threshold domain are determined according to the voltage time-varying behavior set of the target voltage protector, the load sensitivity coefficient of the target voltage protector and a preset sensitivity coefficient, and the voltage dynamic tolerance threshold domain is constructed.

[0017] In the embodiment, the voltage tolerance confidence interval of the target voltage protector is determined through the voltage dynamic tolerance threshold domain, which specifically includes:

[0018] The historical data of the target voltage protector is obtained, and each voltage disturbance factor of the target voltage protector is determined through the historical data.

[0019] The confidence correction factor of the voltage dynamic tolerance threshold domain is determined according to each voltage disturbance factor of the target voltage protector and a preset disturbance weight.

[0020] The voltage dynamic tolerance threshold is confidence-corrected according to the confidence correction factor, to obtain a voltage tolerance confidence interval of the target voltage protector.

[0021] In the embodiment, the input voltage data of the target voltage protector is monitored according to the voltage tolerance confidence interval, to obtain the electrical quality shift index of the target voltage protector, which specifically includes:

[0022] The input voltage data of the target voltage protector is compared with the voltage tolerance confidence interval, to obtain each shift voltage data.

[0023] Each voltage shift distance is determined according to each shift voltage data and the voltage tolerance confidence interval.

[0024] The electrical quality shift index of the target voltage protector is determined by all the voltage shift distances and a preset reference voltage.

[0025] In the embodiment, the control response strategy of the target voltage protector is determined according to the voltage risk label and a preset risk response, which is filtering the preset risk response according to the voltage risk label, to obtain the control response strategy of the target voltage protector.

[0026] In a second aspect, the application provides a control device of an intelligent adaptive voltage protector for executing a control method of an intelligent adaptive voltage protector, which includes:

[0027] A data acquisition module acquires input voltage data of a target voltage protector, extracts time-varying behaviors of the input voltage data, and obtains a voltage time-varying behavior set of the target voltage protector.

[0028] A tolerance confidence module obtains operating parameters of the target voltage protector, and then constructs a voltage dynamic tolerance threshold according to the voltage time-varying behavior set of the target voltage protector and the operating parameters of the target voltage protector, and determines a voltage tolerance confidence interval of the target voltage protector through the voltage dynamic tolerance threshold.

[0029] A control strategy module monitors the input voltage data of the target voltage protector according to the voltage tolerance confidence interval, to obtain an electrical quality shift index of the target voltage protector, and then performs risk prediction on the target voltage protector according to the electrical quality shift index, to obtain a voltage risk label of the target voltage protector, and then determines a control response strategy of the target voltage protector according to the voltage risk label and a preset risk response.

[0030] A control execution module intelligently controls the target voltage protector through the control response strategy.

[0031] In a third aspect, the present application provides a computer device, comprising a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the control method of the intelligent adaptive voltage protector.

[0032] In a fourth aspect, the present application provides a computer readable storage medium, which stores instructions or codes, when the instructions or codes are run on a computer, the computer executes the control method of the intelligent adaptive voltage protector.

[0033] The technical scheme provided by the embodiments of the present application has the following beneficial effects:

[0034] The input voltage data of the target voltage protector is collected, time-varying behavior extraction is performed on the input voltage data, and a voltage time-varying behavior set of the target voltage protector is obtained; the operating parameters of the target voltage protector are obtained, and then a voltage dynamic tolerance threshold domain is constructed according to the voltage time-varying behavior set of the target voltage protector and the operating parameters of the target voltage protector, the voltage tolerance confidence interval of the target voltage protector is determined through the voltage dynamic tolerance threshold domain; the input voltage data of the target voltage protector is monitored according to the voltage tolerance confidence interval, the electrical quality deviation index of the target voltage protector is obtained, and then the risk of the target voltage protector is predicted according to the electrical quality deviation index, the voltage risk label of the target voltage protector is obtained, and then the regulation and control response strategy of the target voltage protector is determined according to the voltage risk label and the preset risk response; the target voltage protector is intelligently regulated and controlled through the regulation and control response strategy.

[0035] It can be seen that in the present application, first, by collecting the input voltage data of the target voltage protector and extracting the time-varying behavior, the dynamic characteristics such as the amplitude, frequency and trend of voltage change can be captured in the time dimension, forming a complete set of voltage time-varying behavior, providing a high-precision feature basis for subsequent dynamic tolerance threshold construction and risk prediction; second, by obtaining the operating parameters of the target voltage protector and constructing the voltage dynamic tolerance threshold in combination with the voltage time-varying behavior set, the voltage tolerance confidence interval can be adaptively determined according to different operating conditions, load sensitivity and historical disturbance characteristics, and the protection range can be dynamically corrected when the power grid conditions change or the load characteristics are adjusted, effectively avoiding misoperation or missed protection caused by improper threshold setting, thereby significantly improving the adaptability, protection accuracy and reliability of the voltage protector in a variable operating environment; then, by monitoring the input voltage data through the voltage tolerance confidence interval and calculating the voltage deviation index, the degree and trend of voltage deviation from the safe operating range can be quantified, and on this basis, risk prediction and voltage risk label generation are performed, and the matched regulation and control response strategy is selected in combination with the preset risk response library, which can not only realize early warning and graded response before the voltage abnormality develops to endanger the safety of equipment, but also can match the optimal protection measures according to different risk levels, thereby significantly improving the pertinence and timeliness of protection action; finally, the target voltage protector is intelligently regulated and controlled through the regulation and control response strategy, which can form a closed loop between risk assessment results and execution action, realize accurate triggering of various protection means, and automatically adjust the regulation and control program according to real-time operating conditions to ensure timely and effective protection action.

[0036] In summary, the technical solution adopted by the present application can adaptively adjust the protection range according to the operating conditions and voltage dynamic characteristics, effectively improving the accuracy and reliability of voltage protection. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only the embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0038] Figure 1 is an exemplary flowchart of the control method of the intelligent adaptive voltage protector provided by the present application;

[0039] Figure 2 is an exemplary flowchart of determining the voltage tolerance confidence interval of the target voltage protector according to the present application;

[0040] Figure 3 is an exemplary flowchart of obtaining the voltage deviation index of the target voltage protector according to the present application;

[0041] Figure 4 is a module structure diagram of a control device of an intelligent adaptive voltage protector provided according to the present application;

[0042] Figure 5 is a structural schematic diagram of a computer device for implementing a voltage protector control method according to the present application. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] The embodiments of the present application provide an intelligent adaptive voltage protector control method and device, the core of which is to collect input voltage data of a target voltage protector, extract time-varying behaviors of the input voltage data, obtain a voltage time-varying behavior set of the target voltage protector, obtain operating parameters of the target voltage protector, and then construct a voltage dynamic tolerance threshold domain according to the voltage time-varying behavior set of the target voltage protector and the operating parameters of the target voltage protector, determine a voltage tolerance confidence interval of the target voltage protector through the voltage dynamic tolerance threshold domain, monitor the input voltage data of the target voltage protector according to the voltage tolerance confidence interval, obtain a voltage deviation index of the target voltage protector, then perform risk prediction on the target voltage protector according to the voltage deviation index, obtain a voltage risk label of the target voltage protector, and then determine a regulation and control response strategy of the target voltage protector according to the voltage risk label and a preset risk response. The above scheme can adaptively adjust the protection range according to the operating condition and the voltage dynamic characteristics, and effectively improve the accuracy and reliability of voltage protection.

[0045] Embodiment one, in order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings in the specification and specific implementation manners, referring to Figure 1 The figure is an exemplary flowchart of an intelligent adaptive voltage protector control method according to the present application, the voltage protector control method including the following steps:

[0046] In step S1, input voltage data of a target voltage protector is collected, time-varying behaviors of the input voltage data are extracted, and a voltage time-varying behavior set of the target voltage protector is obtained.

[0047] In this embodiment, the input voltage data of the target voltage protector is acquired by connecting the AC power input terminal of the target voltage protector to a voltage sampling circuit to achieve real-time detection of the input voltage. The voltage sampling circuit can use a combination of resistor voltage division and isolation amplification to proportionally reduce the AC high voltage signal to a safe level range suitable for the analog-to-digital converter (ADC) input, and achieve electrical isolation between the signal and the control system through transformer isolation. The voltage signal after voltage reduction and isolation is input to a high-precision ADC for sampling, and the sampling frequency is set according to the monitoring accuracy requirements. After the acquired digital voltage data is filtered to remove high-frequency noise, the input voltage data of the target voltage protector is obtained.

[0048] In this embodiment, extracting the time-varying behavior of the input voltage data to obtain the voltage time-varying behavior set of the target voltage protector can be achieved through the following steps:

[0049] The voltage level, voltage variability, voltage kurtosis, and voltage valley of the target voltage protector are determined within a preset time window using the input voltage data.

[0050] The voltage level, voltage variability, voltage kurtosis, and voltage valley of the target voltage protector are combined into a set of time-varying voltage behaviors of the target voltage protector.

[0051] In specific implementation, the voltage level, voltage variability, voltage kurtosis, and voltage trough of the target voltage protector can be determined within a preset time window using the input voltage data. Specifically, the preset time window length can be N. The input voltage data within the time window are summed, and the sum is divided by N to obtain the voltage level of the target voltage protector. The voltage level is subtracted from each input voltage data within the time window, and the result is squared. The sum of these results is then divided by (N-1), and the square root of the result is taken as the voltage variability of the target voltage protector. Then, the target voltage is calculated. The voltage kurtosis and voltage valley of the protector are as follows: voltage level refers to the overall amplitude level of the input voltage monitored by the target voltage protector; voltage variability refers to the degree of fluctuation of the input voltage value collected by the target voltage protector relative to the voltage level of the window. Then, the voltage level, voltage variability, voltage kurtosis and voltage valley of the target voltage protector can be combined into a set of the voltage time-varying behavior of the target voltage protector. That is, the voltage level, voltage variability, voltage kurtosis and voltage valley of the target voltage protector can be used as set elements to merge into a set, and the resulting set is used as the set of the voltage time-varying behavior of the target voltage protector.

[0052] It should be noted that by collecting the input voltage data of the target voltage protector and performing time-varying behavior extraction, the dynamic characteristics such as the amplitude, frequency, trend, etc. of the voltage change can be captured in the time dimension, forming a complete set of voltage time-varying behaviors, and providing a high-precision feature basis for subsequent dynamic tolerance threshold construction and risk prediction.

[0053] In step S2, the operating parameters of the target voltage protector are acquired, and then a voltage dynamic tolerance threshold is constructed according to the set of voltage time-varying behaviors of the target voltage protector and the operating parameters of the target voltage protector, and the voltage tolerance confidence interval of the target voltage protector is determined through the voltage dynamic tolerance threshold.

[0054] In a specific implementation, the operating parameters of the target voltage protector can be determined by acquiring the factory set values of the target voltage protector.

[0055] In this embodiment, the voltage dynamic tolerance threshold can be constructed according to the set of voltage time-varying behaviors of the target voltage protector and the operating parameters of the target voltage protector by using the following steps:

[0056] The load sensitivity coefficient of the target voltage protector is determined through the operating parameters of the target voltage protector.

[0057] The upper limit of the voltage dynamic tolerance threshold and the lower limit of the voltage dynamic tolerance threshold are determined according to the set of voltage time-varying behaviors of the target voltage protector, the load sensitivity coefficient of the target voltage protector, and the preset sensitivity coefficient, and then the voltage dynamic tolerance threshold is constructed.

[0058] In a specific implementation, the load sensitivity coefficient of the target voltage protector can be determined through the operating parameters of the target voltage protector, that is, the allowable voltage deviation in the operating parameters of the voltage protector can be acquired, 0.15 is subtracted from the allowable voltage deviation, and the result is divided by 0.13, and the result is taken as the load sensitivity coefficient. It should be noted that the load sensitivity coefficient refers to a normalized parameter quantifying the response degree of the target load to voltage fluctuations, change rates, and power quality changes. Then, the upper limit of the voltage dynamic tolerance threshold and the lower limit of the voltage dynamic tolerance threshold can be determined according to the set of voltage time-varying behaviors of the target voltage protector, the load sensitivity coefficient of the target voltage protector, and the preset sensitivity coefficient, and then the voltage dynamic tolerance threshold is constructed, that is, the lower limit of the voltage dynamic tolerance threshold can be determined by the following formula:

[0059]

[0060] wherein, represents the lower limit of the voltage dynamic tolerance threshold; represents the voltage level in the current time window; a sensitivity coefficient representing a control fluctuation response; a voltage variability in a current time window; a load sensitivity coefficient; a sensitivity coefficient representing a rate of change response; a rate of change of voltage in a current time window, wherein it should be noted that the sensitivity coefficient is a proportional factor indicating the degree of influence on the adjustment range of the upper and lower limits of the threshold, which can be preset by the operating parameters of the voltage protector; the upper limit of the voltage dynamic tolerance threshold can be obtained by the following formula:

[0061]

[0062] wherein, a lower limit of the voltage dynamic tolerance threshold; a voltage level in a current time window; a sensitivity coefficient representing a control fluctuation response; a voltage variability in a current time window; a load sensitivity coefficient; a sensitivity coefficient representing a rate of change response; a rate of change of voltage in a current time window; then, the voltage dynamic tolerance threshold can be constructed according to the upper limit of the voltage dynamic tolerance threshold and the lower limit of the voltage dynamic tolerance threshold, that is, a voltage interval can be obtained according to the upper limit of the voltage dynamic tolerance threshold and the lower limit of the voltage dynamic tolerance threshold, and the voltage interval is taken as the voltage dynamic tolerance threshold of the target voltage protector, wherein it should be noted that the voltage dynamic tolerance threshold refers to a voltage interval in a safe operation range of input voltage.

[0063] Preferably, in the embodiment, reference is made to Figure 2 as shown in the figure, which is an exemplary flow chart for determining the voltage tolerance confidence interval of the target voltage protector in the embodiment, and the voltage tolerance confidence interval of the target voltage protector can be determined by the voltage dynamic tolerance threshold in the embodiment, which can be achieved by the following steps:

[0064] In step S21, historical data of the target voltage protector is obtained, and then each voltage disturbance factor of the target voltage protector is determined by the historical data;

[0065] In step S22, a confidence correction factor of the voltage dynamic tolerance threshold is determined according to each voltage disturbance factor of the target voltage protector and a preset disturbance weight;

[0066] In step S23, the voltage dynamic tolerance threshold is confidence corrected according to the confidence correction factor, and a voltage tolerance confidence interval of the target voltage protector is obtained.

[0067] In a specific implementation, first, the historical data of the target voltage protector can be acquired, and then each voltage disturbance factor of the target voltage protector can be determined based on the historical data, that is, the number of voltage out-of-range times can be extracted from the historical data of the target voltage protector, so as to obtain the number of voltage out-of-range times per unit time, and the number of voltage out-of-range times per unit time is taken as the out-of-range frequency factor, the amplitude of voltage out-of-range is extracted from the historical data of the target voltage protector, so as to obtain the average value of the amplitude of voltage out-of-range, and the average value of the amplitude of voltage out-of-range of the target voltage protector is taken as the out-of-range amplitude factor, the time of voltage out-of-range is extracted from the historical data of the target voltage protector, so as to obtain the average time of each voltage out-of-range, and the average time of each voltage out-of-range is taken as the duration factor, and then the out-of-range frequency factor, the out-of-range amplitude factor and the duration factor of the target voltage protector are standardized, and the result of the standardization is taken as each voltage disturbance factor of the target voltage protector; then, the confidence correction factor of the voltage dynamic tolerance threshold can be determined according to each voltage disturbance factor of the target voltage protector and a preset disturbance weight, that is, the weight of each voltage disturbance factor can be preset according to historical experience, each voltage disturbance factor is multiplied by the corresponding weight, the results of the multiplication are summed, and the obtained result is multiplied by a preset scaling coefficient, so that the obtained result is taken as the confidence correction factor of the voltage dynamic tolerance threshold, and it should be noted that the scaling coefficient refers to the mapping of the dimensionless calculation result to the correction amount with actual voltage units, which can be preset through historical experience; finally, the voltage tolerance confidence interval of the target voltage protector can be obtained by confidence correction of the voltage dynamic tolerance threshold based on the confidence correction factor, that is, the lower limit of the voltage dynamic tolerance threshold is subtracted by the confidence correction factor to obtain the lower limit of the voltage tolerance confidence interval, and the upper limit of the voltage dynamic tolerance threshold is added by the confidence correction factor to obtain the upper limit of the voltage tolerance confidence interval, so that the voltage tolerance confidence interval of the target voltage protector is obtained, and it should be noted that the voltage tolerance confidence interval refers to the input voltage variation interval allowed by the target voltage protector after adjustment by the confidence correction factor.

[0068] It should be noted that the voltage dynamic tolerance threshold can be constructed by acquiring the operating parameters of the target voltage protector and combining the voltage time-varying behavior set, and the voltage tolerance confidence interval can be adaptively determined according to different operating conditions, load sensitivity and historical disturbance characteristics, and the protection range can be dynamically corrected when the power grid condition changes or the load characteristics are adjusted, so that the misoperation or missed protection caused by improper threshold setting can be effectively avoided, and the adaptability, protection accuracy and reliability of the voltage protector in a variable operating environment can be significantly improved.

[0069] In step S3, the input voltage data of the target voltage protector is monitored according to the voltage tolerance confidence interval, the electrical quality shift index of the target voltage protector is obtained, the risk of the target voltage protector is predicted according to the electrical quality shift index, the voltage risk label of the target voltage protector is obtained, and the regulation and control response strategy of the target voltage protector is determined according to the voltage risk label and a preset risk response.

[0070] Preferably, in the embodiment, the reference Figure 3 As shown in the figure, the figure is an exemplary flow chart for obtaining the electrical quality shift index of the target voltage protector in the embodiment of the application. The input voltage data of the target voltage protector is monitored according to the voltage tolerance confidence interval in the embodiment, and the electrical quality shift index of the target voltage protector can be obtained by the following steps.

[0071] In step S31, the input voltage data of the target voltage protector is compared with the voltage tolerance confidence interval, and each offset voltage data is obtained.

[0072] In step S32, each voltage offset distance is determined according to each offset voltage data and the voltage tolerance confidence interval.

[0073] In step S33, the electrical quality shift index of the target voltage protector is determined by all the voltage offset distances and a preset reference voltage.

[0074] In specific implementation, first, the target voltage protector input voltage data can be compared with the voltage tolerance confidence interval to obtain each offset voltage data, that is, the target voltage protector input voltage data can be compared with the voltage tolerance confidence interval, the voltage data exceeding the upper limit of the voltage tolerance confidence interval can be subtracted by the upper limit of the voltage tolerance confidence interval, the absolute value of the voltage data exceeding the lower limit of the voltage tolerance confidence interval can be subtracted by the lower limit of the voltage tolerance confidence interval, and the obtained result is taken as the offset voltage data, and the input voltage data within the voltage tolerance confidence interval is set to 0, so as to obtain all the offset voltage data; then, each voltage offset distance can be determined according to each offset voltage data and the voltage tolerance confidence interval, that is, for each offset voltage data, the center value of the voltage tolerance confidence interval can be calculated, that is, the upper limit of the voltage tolerance confidence interval is added to the lower limit of the voltage tolerance confidence interval, the obtained result is divided by two to obtain the center value of the voltage tolerance confidence interval, the upper limit of the voltage tolerance confidence interval is subtracted by the lower limit of the voltage tolerance confidence interval, and the obtained result is divided by two to obtain the half width of the voltage tolerance confidence interval, so that the absolute value of the result of subtracting the center value of the voltage tolerance confidence interval from the offset voltage data is obtained, the obtained result is subtracted by the half width of the voltage tolerance confidence interval, and the obtained result is divided by the half width of the voltage tolerance confidence interval, so that the obtained result is taken as the voltage offset distance, so as to obtain all the voltage offset distances, wherein it should be noted that the voltage offset distance refers to a quantitative index of the normalized deviation degree of the current voltage relative to the confidence interval center; finally, the electrical quality offset index of the target voltage protector can be determined through all the voltage offset distances and the preset reference voltage, that is, the electrical quality offset index can be obtained by the following formula:

[0075]

[0076] wherein, represents the electrical quality offset index; represents the total number of voltage offset distances; represents the kth voltage offset distance: represents the half width of the voltage tolerance confidence interval; represents the rated voltage, wherein it should be noted that the electrical quality offset index refers to a comprehensive index for measuring the stability of the current power quality.

[0077] In the embodiment, the risk of the target voltage protector is predicted according to the electrical quality deviation index, and a voltage risk label of the target voltage protector is obtained. In specific implementation, the voltage risk interval can be preset according to historical experience, so as to compare the electrical quality deviation index with the voltage risk interval, and obtain the voltage risk label corresponding to the electrical quality deviation index, that is, the voltage risk label of the target voltage protector. For example, the voltage risk interval is: 0~0.03 is safe; 0.03~0.06 is warning; and 0.06~0.12 is high risk.

[0078] In the embodiment, the regulation response strategy of the target voltage protector is determined according to the voltage risk label and the preset risk response. Specifically, the regulation response strategy of the target voltage protector is obtained by screening the preset risk response according to the voltage risk label. In specific implementation, the voltage risk label of the target voltage protector is used as an index to screen the corresponding regulation response strategy. The regulation response strategy includes: safe, keep power supply; warning, pre-warning, short monitoring window, voltage limiting / compensation; and high risk, emergency disconnect, bypass switching, and warning prompt.

[0079] It should be noted that the input voltage data is monitored and the electrical quality deviation index is calculated by using the voltage tolerance confidence interval, so as to quantify the degree and trend of voltage deviation from the safe operation range. On this basis, the risk is predicted and the voltage risk label is generated, and then the matched regulation response strategy is screened by combining the preset risk response library. Not only can the early warning and grading response be realized before the voltage abnormality develops to endanger the safety of the equipment, but also the optimal protection measure can be matched according to different risk levels, so as to significantly improve the pertinence and timeliness of the protection action.

[0080] In step S4, the target voltage protector is intelligently regulated by using the regulation response strategy.

[0081] In specific implementation, the target voltage protector is intelligently regulated by using the regulation response strategy. Specifically, the corresponding execution channel can be selected according to the action in the regulation response strategy, such as: voltage limiting / compensation→active voltage regulation module; emergency disconnect→electromagnetic relay driving stage; bypass switching→SMOSFET stage; pre-warning / warning prompt→warning light flashing, so as to map the instruction parameters of the regulation response strategy to the driving signals of the execution channel, and complete the intelligent regulation of the target voltage protector.

[0082] It should be noted that the target voltage protector is intelligently regulated by using the regulation response strategy, so as to form a closed loop of risk assessment result and execution action, realize the precise triggering and parameterized control of various protection means such as voltage limiting, cutting, compensation, and bypass switching, automatically adjust the regulation strength and execution sequence according to real-time working conditions, and ensure that the protection action is timely and effective.

[0083] It can be seen that in the present application, first, by collecting the input voltage data of the target voltage protector and performing time-varying behavior extraction, the amplitude, frequency, trend and other dynamic characteristics of the voltage change can be captured in the time dimension, forming a complete set of voltage time-varying behaviors, providing a high-precision feature basis for subsequent dynamic tolerance threshold construction and risk prediction; second, by obtaining the operating parameters of the target voltage protector and combining the voltage time-varying behavior set to construct the voltage dynamic tolerance threshold, the voltage tolerance confidence interval can be adaptively determined according to different operating conditions, load sensitivity and historical disturbance characteristics, and the protection range can be dynamically corrected when the power grid conditions change or the load characteristics are adjusted, effectively avoiding misoperation or missed protection caused by improper threshold setting, thereby significantly improving the adaptability, protection accuracy and reliability of the voltage protector in a variable operating environment; then, by monitoring the input voltage data through the voltage tolerance confidence interval and calculating the voltage deviation index, the degree and trend of the voltage deviation from the safe operating range can be quantified, and on this basis, risk prediction and voltage risk label generation are performed, and the matched regulation and control response strategy is selected in combination with the preset risk response library, which can not only realize early warning and graded response before the voltage abnormality develops to endanger the safety of the equipment, but also can match the optimal protection measures according to different risk levels, thereby significantly improving the pertinence and timeliness of the protection action; finally, by intelligently regulating and controlling the target voltage protector through the regulation and control response strategy, the risk assessment result and the execution action can form a closed loop, realizing accurate triggering of various protection means, and automatically adjusting the regulation and control program according to the real-time operating conditions to ensure timely and effective protection action.

[0084] In summary, the technical solution adopted by the present application can adaptively adjust the protection range according to the operating conditions and voltage dynamic characteristics, effectively improving the accuracy and reliability of voltage protection.

[0085] In the second embodiment, the present application provides a control device for an intelligent adaptive voltage protector Figure 4 As shown in the figure, the figure is a module structure diagram of the voltage protector control method according to the embodiment of the present application, and the voltage protector control method comprises:

[0086] The data acquisition module acquires the input voltage data of the target voltage protector, performs time-varying behavior extraction on the input voltage data, and obtains a voltage time-varying behavior set of the target voltage protector;

[0087] The tolerance confidence module obtains the operating parameters of the target voltage protector, and then constructs a voltage dynamic tolerance threshold according to the voltage time-varying behavior set of the target voltage protector and the operating parameters of the target voltage protector, and determines the voltage tolerance confidence interval of the target voltage protector through the voltage dynamic tolerance threshold;

[0088] The control strategy module monitors input voltage data of the target voltage protector according to the voltage tolerance confidence interval, obtains an electrical quality deviation index of the target voltage protector, performs risk prediction on the target voltage protector according to the electrical quality deviation index, obtains a voltage risk label of the target voltage protector, and determines a control response strategy of the target voltage protector according to the voltage risk label and a preset risk response.

[0089] The control execution module performs intelligent control on the target voltage protector through the control response strategy.

[0090] The above describes an example of the control method and device of the intelligent adaptive voltage protector provided in the embodiments of the present application in detail. It can be understood that the corresponding device contains the hardware structure and / or software module corresponding to the execution of each function in order to realize the above functions. Those skilled in the art should easily realize that the units and algorithm steps of each example described in combination with the embodiments disclosed in the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is realized in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0091] In embodiment three, the present application further provides a computer device, which comprises a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the control method of the intelligent adaptive voltage protector described above.

[0092] In the present embodiment, with reference to Figure 5 The dashed line in the figure represents that the unit or the module is optional, and the figure is a structural schematic diagram of a computer device of the control device of the intelligent adaptive voltage protector according to the embodiments of the present application. The control method of the intelligent adaptive voltage protector described above in the above embodiments can be realized by the computer device shown in the figure, which comprises at least one processor 501, a memory 502 and at least one communication unit 505, and the computer device can be a terminal device or a server or a chip. Figure 5

[0093] ​The processor 501 can be a general purpose processor or a special purpose processor. For example, the processor 501 can be a central processing unit (CPU), which can be used to control the computer device, execute software programs, and process data of the software programs. The computer device can further include a communication unit 505, which can be used to realize input (reception) and output (transmission) of signals.

[0094] For example, the computer device can be a chip, and the communication unit 505 can be an input and / or output circuit of the chip, or the communication unit 505 can be a communication interface of the chip. The chip can be used as a component of a terminal device or a network device or other devices.

[0095] For another example, the computer device can be a terminal device or a server, and the communication unit 505 can be a transceiver of the terminal device or the server, or the communication unit 505 can be a transceiver circuit of the terminal device or the server.

[0096] The computer device can include one or more memories 502, which can store programs 504. The programs 504 can be run by the processor 501 to generate instructions 503, so that the processor 501 executes the method described in the above method embodiments according to the instructions 503. Optionally, the memory 502 can further store data (such as a target audit model). Optionally, the processor 501 can further read the data stored in the memory 502. The data can be stored in the same storage address as the programs 504, or the data can be stored in different storage addresses from the programs 504.

[0097] The processor 501 and the memory 502 can be separately arranged, or can be integrated together, for example, integrated on a system on chip (SOC) of the terminal device.

[0098] It should be understood that each step of the above method embodiments can be completed by a logic circuit in the form of hardware or an instruction in the form of software in the processor 501. The processor 501 can be a central processing unit, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, for example, discrete gates or transistor logic devices, or discrete hardware components.

[0099] Those skilled in the art will appreciate that embodiments of the present application can be readily used as a method, a system or a computer program product. Accordingly, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application can take the form of a computer program product on one or more computer readable storage media (including, but not limited to, disk memory, CD-ROMs, optical storage devices, etc.) embodying computer readable program code.

[0100] In an embodiment four, the present application also provides a computer readable storage medium, wherein the computer readable storage medium stores instructions or codes, and when the instructions or codes are executed on a computer, the computer performs the control method of the intelligent adaptive voltage protector.

[0101] Although preferred embodiments of the present application have been described, those skilled in the art will appreciate that other alterations and modifications to these embodiments can be made without departing from the spirit and scope of the application. Therefore, it is intended that the appended claims encompass all such alterations and modifications as fall within the scope of the present application. Accordingly, the application is not to be limited by the above description and examples, but is only limited by the scope of the claims.

[0102] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A control method for an intelligent adaptive voltage protector, characterized in that, The control method includes the following steps: The input voltage data of the target voltage protector is collected, and the time-varying behavior of the input voltage data is extracted to obtain the voltage time-varying behavior set of the target voltage protector; The operating parameters of the target voltage protector are obtained, and then a voltage dynamic tolerance threshold is constructed based on the voltage time-varying behavior set and the operating parameters of the target voltage protector. The voltage tolerance confidence interval of the target voltage protector is determined through the voltage dynamic tolerance threshold. The input voltage data of the target voltage protector is monitored based on the voltage tolerance confidence interval to obtain the electrical quality deviation index of the target voltage protector. Then, the risk of the target voltage protector is predicted based on the electrical quality deviation index to obtain the voltage risk label of the target voltage protector. Finally, the control response strategy of the target voltage protector is determined based on the voltage risk label and the preset risk response. The target voltage protector is intelligently controlled through the aforementioned control response strategy; Specifically, monitoring the input voltage data of the target voltage protector based on the voltage tolerance confidence interval to obtain the electrical quality deviation index of the target voltage protector includes: The input voltage data of the target voltage protector is compared with the voltage tolerance confidence interval to obtain the offset voltage data. The voltage offset distance is determined based on the various offset voltage data and the voltage tolerance confidence interval; The electrical offset index of the target voltage protector is determined by all voltage offset distances and a preset reference voltage.

2. The control method for an intelligent adaptive voltage protector as described in claim 1, characterized in that, The input voltage data of the target voltage protector is obtained by connecting the AC power input terminal of the target voltage protector to the voltage sampling circuit.

3. The control method for an intelligent adaptive voltage protector as described in claim 1, characterized in that, The time-varying behavior extraction of the input voltage data yields the voltage time-varying behavior set of the target voltage protector, specifically including: The voltage level, voltage variability, voltage kurtosis, and voltage valley of the target voltage protector are determined within a preset time window using the input voltage data. The voltage level, voltage variability, voltage kurtosis, and voltage valley of the target voltage protector are combined into a set of time-varying voltage behaviors of the target voltage protector.

4. The control method for an intelligent adaptive voltage protector as described in claim 1, characterized in that, The voltage dynamic tolerance threshold is constructed based on the voltage time-varying behavior set and the operating parameters of the target voltage protector, specifically including: The load sensitivity coefficient of the target voltage protector is determined by the operating parameters of the target voltage protector. The upper limit and lower limit of the voltage dynamic tolerance threshold are determined based on the voltage time-varying behavior set of the target voltage protector, the load sensitivity coefficient of the target voltage protector, and the preset sensitivity coefficient, thereby constructing the voltage dynamic tolerance threshold.

5. The control method for an intelligent adaptive voltage protector as described in claim 1, characterized in that, Determining the voltage tolerance confidence interval of the target voltage protector through the aforementioned voltage dynamic tolerance threshold specifically includes: Historical data of the target voltage protector is obtained, and then the various voltage disturbance factors of the target voltage protector are determined through the historical data. The confidence correction factor for the voltage dynamic tolerance threshold is determined based on the various voltage disturbance factors of the target voltage protector and the preset disturbance weights. The voltage dynamic tolerance threshold is corrected based on the confidence correction factor to obtain the voltage tolerance confidence interval of the target voltage protector.

6. The control method for an intelligent adaptive voltage protector as described in claim 1, characterized in that, The control response strategy of the target voltage protector is determined by screening the preset risk responses based on the voltage risk tags, thereby obtaining the control response strategy of the target voltage protector.

7. A control device for an intelligent adaptive voltage protector, used to execute the control method for an intelligent adaptive voltage protector as described in any one of claims 1 to 6, characterized in that, The control device for the intelligent adaptive voltage protector includes: The data acquisition module acquires the input voltage data of the target voltage protector, extracts the time-varying behavior of the input voltage data, and obtains the voltage time-varying behavior set of the target voltage protector. The tolerance confidence module obtains the operating parameters of the target voltage protector, and then constructs a voltage dynamic tolerance threshold based on the voltage time-varying behavior set and the operating parameters of the target voltage protector. The voltage tolerance confidence interval of the target voltage protector is determined through the voltage dynamic tolerance threshold. The control strategy module monitors the input voltage data of the target voltage protector based on the voltage tolerance confidence interval to obtain the electrical quality deviation index of the target voltage protector. Then, it performs risk prediction on the target voltage protector based on the electrical quality deviation index to obtain the voltage risk label of the target voltage protector. Finally, it determines the control response strategy of the target voltage protector based on the voltage risk label and the preset risk response. The control execution module intelligently controls the target voltage protector through the control response strategy.

8. A computer device, characterized in that, The computer device includes a memory and a processor. The memory stores a computer program, and the processor retrieves and runs the computer program from the memory, causing the computer device to execute a control method for an intelligent adaptive voltage protector according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions or code that, when executed on a computer, cause the computer to implement a control method for an intelligent adaptive voltage protector as described in any one of claims 1 to 6.

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