An intelligent testing system for electrical distribution products

Abstract

The present invention relates to the field of electronic technology, and in particular to an intelligent testing system for a distribution device product, comprising an electrical performance testing module, an insulation performance testing module, an overload protection testing module, a temperature performance testing module, an electromagnetic compatibility testing module, an electric energy distribution analysis module, a comprehensive performance analysis module, and a management database. The system detects actual distribution data of electric energy of the distribution device and compares it with stored electric energy distribution rules to obtain an electric energy distribution accuracy evaluation coefficient of the distribution device, and combines the electric energy system stability, insulation performance evaluation coefficient, overload protection reliability, thermal stability evaluation coefficient, and electromagnetic anti-interference capability evaluation coefficient of the distribution device to obtain a comprehensive performance evaluation index of the distribution device, thereby ensuring that the distribution device can operate stably under various working conditions, providing continuous and reliable power supply for connected equipment, and avoiding equipment damage or work interruption due to instability.

Description

Technical Field

[0001] The invention relates to the field of electronic technology, and in particular to an intelligent testing system for a distribution device product. Background Art

[0002] With the continuous development of modern industry and technology, distributors play a vital role in power distribution and control in various fields. In complex electrical systems, distributors need to ensure the reliable distribution of electric energy, protect circuit safety, and meet the power needs of different equipment. Traditional distributors are gradually unable to adapt to increasingly diversified and intelligent application scenarios in terms of function and performance.

[0003] In order to improve the performance and reliability of distributors, various advanced technologies are constantly being introduced, such as intelligent control, precise monitoring, efficient conversion, etc. At the same time, the requirements for miniaturization, integration and intelligence of distributors are becoming increasingly higher to adapt to compact installation space and convenient operation requirements.

[0004] The patent name is a technical solution published in a Chinese patent application entitled "A distribution device testing method" (application number CN202110698350.X). The solution includes automatic testing and manual testing. The automatic test can automatically perform short-circuit point testing, resistance testing and relay testing in the distribution device function test, and automatically interpret the data without manual intervention throughout the process. The manual test can select one of the short-circuit point test, resistance test and relay test for overall or single-point testing. Manual testing is conducive to fault reproduction and positioning, and can help technicians to more accurately discover and solve problems, thereby improving the pertinence and operability of the test. However, there are still some shortcomings, which are specifically manifested in the following aspects: 1. The solution does not involve the detection and analysis of the distribution device's anti-electromagnetic interference indicator. The distribution device may not be able to work stably in an external electromagnetic interference environment, resulting in malfunction, performance degradation or even failure, which will affect its normal function and reduce the reliability and stability of the system.

[0005] Second, this solution does not involve analysis of the actual distribution data of the power distribution device, and may not be able to promptly detect deviations between the actual power distribution and the set rules, resulting in insufficient or excessive power supply in some parts. Unreasonable power distribution may affect the normal operation of connected equipment and increase system instability. Summary of the invention

[0006] In order to overcome the shortcomings of the background technology, an embodiment of the present invention provides an intelligent testing system for a power distribution product, which can effectively solve the problems involved in the above-mentioned background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions: The present invention provides an intelligent testing system for a power distribution device, including: an electrical performance testing module for analyzing the electrical parameters of the power distribution device at each time point to obtain the stability of the power distribution device's electrical energy system; , electrical parameters include voltage, current, and power factor.

[0008] The insulation performance test module is used to obtain the insulation performance evaluation coefficient of the distributor based on the insulation resistance analysis between the inlet and outlet terminals of each phase line of the distributor. .

[0009] The overload protection test module is used to analyze the reliability of the distributor overload protection by applying various overload currents to the distributor and recording the response time of each overload current of the distributor. .

[0010] The temperature performance test module is used to analyze the thermal stability evaluation coefficient of the distributor according to the heating rate, maximum temperature and temperature fluctuation degree of each load condition of the distributor. .

[0011] The electromagnetic compatibility test module is used to obtain the voltage and current of the distributor at each test time point under each frequency corresponding to the electromagnetic interference source of each strength, screen the voltage and current of the distributor at each abnormal time point under each frequency corresponding to the electromagnetic interference source of each strength, and then analyze and obtain the electromagnetic interference resistance evaluation coefficient of the distributor. .

[0012] The power distribution analysis module is used to detect the actual distribution data of the power distribution device and compare it with the stored power distribution rules to obtain the power distribution accuracy evaluation coefficient of the power distribution device. ,The actual distribution data includes the average voltage and average current of each ,measurement point under the set load.

[0013] Comprehensive performance analysis module, used to obtain the comprehensive performance evaluation index of the distributor through comprehensive analysis and provide feedback;

[0014] The management database is used to store the set duration of each overload current response of the distributor, the standard power data specified at each measurement point in the power distribution rules, and the voltage and current range for normal operation of the distributor.

[0015] Preferably, the specific analysis method of the electrical parameters of the distributor at each time point is: select a number of time points with equal time intervals according to the set time interval, record them as each time point, and detect the voltage and current of the distributor at each time point through a sensor, record them as , Indicates The number of the time point, , the voltage and current of the distributor at each time point are compared with the preset normal working voltage and current range of the distributor, and the voltage and current that are greater than the maximum value corresponding to the preset normal working voltage and current range of the distributor are screened out, and the corresponding time points are recorded as the top time points of the distributor, and the voltage and current at the top time points of the distributor are recorded as , Indicates The number of the tip time point, and At the same time, the power factor of the distributor at each time point is obtained by connecting the power factor measuring instrument to the distributor line, which is recorded as .

[0016] Preferably, the specific analysis method of the electrical performance test module is: reading the voltage, current, and power factor of the distributor at each time point and taking the average values ​​thereof to obtain the average voltage, current, and power factor of the distributor, recorded as , substituting it into the formula Get the voltage stability of the distributor , They represent the set voltage stability and voltage difference weight factors respectively. Indicates the maximum voltage value corresponding to the normal working voltage range of the set distributor. represents the number of time points, Represents the number of tip time points. According to the method of analyzing the voltage stability of the distributor, the current stability and power factor stability of the distributor are obtained, which are recorded as , substituting it into the formula Get the stability of the power system of the distributor , They represent the weighting factors of voltage stability, current stability, and power factor stability respectively.

[0017] Preferably, the specific analysis method of the insulation performance test module is: sequentially numbering each phase line of the distributor according to a preset order, and recording the number of each phase line in sequence as After ensuring that the distributor is completely disconnected from the power supply, the insulation resistance between the inlet and outlet terminals of each phase line of the distributor is tested multiple times using a tester, and the insulation resistance between each phase line is recorded as , Indicates The number of the test, , substituting it into the formula Get the insulation performance evaluation coefficient of the distributor , Indicates the set insulation resistance standard value between phase lines. Indicates the number of phase lines, Indicates the number of detections.

[0018] Preferably, the specific analysis method of the overload protection test module is as follows: the specific analysis method of the overload protection test module is as follows: the distributor is connected to the test circuit, and a current source device is used to gradually increase the output current to a set current overload value, to confirm whether the circuit is cut off when the distributor current is overloaded, and the time taken by the distributor from starting to increase the current to cutting off the circuit is recorded, which is recorded as the response time of the distributor, and each current overload value is set in sequence according to the set current interval, which is recorded as each overload current of the distributor, and the overload current of the distributor is adjusted according to the value of each overload current of the distributor, and the response time of the distributor under each overload current is obtained according to the method of analyzing the response time of the distributor, which is recorded as the response time of each overload current of the distributor. , Indicates The number of overload currents, , read the set duration of each overload current response of the distributor from the management database, recorded as , substituting it into the formula Get the reliability of the distributor overload protection , Indicates the set amount of overload current.

[0019] Preferably, the specific analysis method of the temperature performance test module is: select a number of time points with equal time intervals from the working time of the distributor according to the set time, record them as temperature time points, and apply different set loads to the distributor respectively, record them as load conditions, and monitor the temperature of each temperature time point of each load condition of the distributor through a temperature sensor, record them as ,in Indicates The number of load conditions, , Indicates The number of each temperature time point, , and the duration of the time interval is recorded as , and substitute into the formula Get the heating rate of the distributor under various load conditions , Indicates the distributor Load condition The temperature at a temperature time point, Indicates the number of temperature time points. The maximum value is selected from the temperature of each temperature time point under each load condition of the distributor and recorded as the maximum temperature of each load condition of the distributor. At the same time, the average temperature of each load condition of the distributor is obtained by taking the average temperature of each temperature time point under each load condition of the distributor, which is recorded as , substituting it into the formula Get the temperature fluctuation degree of each load condition of the distributor .

[0020] Preferably, the specific analysis method of the thermal stability evaluation coefficient of the distributor is: respectively reading the heating rate of each load condition of the distributor , Maximum temperature , Temperature fluctuation , substituting it into the formula Get the thermal stability evaluation coefficient of the distributor , They represent the reference heating speed and high temperature threshold of the distributor under normal working conditions. They represent the weight factors of the set heating rate, maximum temperature, and temperature fluctuation degree, respectively. Indicates the load condition number.

[0021] Preferably, the specific analysis method of the electromagnetic compatibility test module is: select a number of test time points at random according to the set duration, set a specific initial frequency and initial intensity for the electromagnetic wave generator, and place it in the electromagnetic test area, gradually increase the intensity and frequency of the electromagnetic interference source according to the set frequency difference and intensity difference, detect the voltage and current of the distributor at each test time point under the electromagnetic interference source of each intensity corresponding to each frequency, and at the same time read the voltage and current range of normal operation of the distributor from the management database, compare the voltage and current of the distributor at each test time point under the electromagnetic interference source of each intensity corresponding to each frequency with the voltage and current range of normal operation of the distributor, screen out the test time points where the voltage and current are not within the voltage and current range of normal operation of the distributor under the electromagnetic interference source of each intensity corresponding to each frequency, record them as abnormal time points, and record the voltage and current of the distributor at each abnormal time point under the electromagnetic interference source of each intensity corresponding to each frequency as , Indicates The number of the frequency, , Indicates The number of the intensity, , Indicates The number of the abnormal time point, , substituting it into the formula , Obtain the voltage anomaly degree of the distributor at each abnormal time point under each frequency corresponding to each intensity electromagnetic interference source , Abnormal degree of current , They respectively represent the maximum voltage and minimum voltage corresponding to the voltage range of the normal operation of the set distributor. They represent the maximum current and minimum current corresponding to the current range of the normal operation of the set distributor. Get the electromagnetic interference immunity evaluation coefficient of the distributor , Indicates the number of abnormal time points, Indicates the intensity setting number of the electromagnetic interference source, Indicates the frequency setting number of the electromagnetic interference source.

[0022] Preferably, the specific analysis method of the power distribution analysis module is: number each branch of the inlet and outlet of the distributor in a set order, record them as measurement points, connect the test equipment to each measurement point of the distributor in sequence, and randomly select a number of time points with equal time intervals from the working time of the distributor, record them as measurement time points, detect the voltage and current of each measurement point at each measurement time point under the set load, and obtain the average voltage and average current of each measurement point under the set load by taking the average value, which are recorded as , Indicates The number of the measuring point, , read the standard electric energy data specified at each measuring point in the preset electric energy distribution rules from the management database, and record the voltage and current specified at each measuring point as , through the formula , Get the voltage accuracy of the distributor , Current accuracy , substituting it into the formula Get the power distribution accuracy evaluation coefficient of the distributor , Indicates the weight factor of the set voltage accuracy and current accuracy.

[0023] Preferably, the specific analysis method of the comprehensive performance analysis module is: respectively reading the stability of the power system of the distributor , Insulation performance evaluation coefficient , Reliability of overload protection , Thermal stability evaluation coefficient , Electromagnetic interference immunity evaluation coefficient , Electric energy distribution accuracy assessment coefficient , substituting it into the formula Get the comprehensive performance evaluation index of the distributor ,in They represent the weight factors of the set power system stability, insulation performance evaluation coefficient, overload protection reliability, thermal stability evaluation coefficient, electromagnetic interference immunity evaluation coefficient, and power distribution accuracy evaluation coefficient. The comprehensive performance evaluation index of the distributor is compared with the preset qualified value of the comprehensive performance evaluation index. If the comprehensive performance evaluation index of the distributor is greater than or equal to the preset qualified value of the comprehensive performance evaluation index, it means that the comprehensive performance evaluation index of the distributor is qualified. Otherwise, it is unqualified and feedback is given to the system.

[0024] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention detects the actual distribution data of the electric energy of the distributor and compares it with the preset electric energy distribution rules to obtain the electric energy distribution accuracy evaluation coefficient of the distributor. It can timely discover the difference between the actual distribution and the preset rules, ensure that the electric energy is reasonably distributed as expected, and reduce failures and fluctuations caused by unreasonable distribution.

[0025] 2. The present invention obtains the electromagnetic anti-interference ability evaluation coefficient of the distributor by screening and analyzing the voltage and current of the distributor at each abnormal time point under each frequency corresponding to the electromagnetic interference source of each intensity, which helps to timely discover possible faults or vulnerabilities of the distributor, ensure that the distributor can work stably in a complex electromagnetic environment, and thus ensure the normal operation of the entire system.

[0026] 3. The present invention obtains the comprehensive performance evaluation index of the distributor through the stability of the distributor's power system, insulation performance evaluation coefficient, reliability of overload protection, thermal stability evaluation coefficient, electromagnetic anti-interference capability evaluation coefficient, and power distribution accuracy evaluation coefficient. This can ensure that the distributor can operate stably under various working conditions, provide continuous and reliable power supply for the connected equipment, and avoid equipment damage or work interruption due to instability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0028] Figure 1 This is a system module connection diagram of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1As shown, an intelligent testing system for distribution equipment products includes an electrical performance testing module, an insulation performance testing module, an overload protection testing module, a temperature performance testing module, an electromagnetic compatibility testing module, an electric energy distribution analysis module, a comprehensive performance analysis module, and a management database.

[0031] The management database is connected to the electrical performance test module, the insulation performance test module, the overload protection test module, the temperature performance test module, the electromagnetic compatibility test module, the electric energy distribution analysis module, and the comprehensive performance analysis module; the comprehensive performance analysis module is connected to the electrical performance test module, the insulation performance test module, the overload protection test module, the temperature performance test module, the electromagnetic compatibility test module, and the electric energy distribution analysis module.

[0032] The electrical performance test module is used to analyze the electrical parameters of the distributor at each time point to obtain the stability of the power system of the distributor. , electrical parameters include voltage, current, and power factor.

[0033] The specific analysis method of the electrical parameters of the distributor at each time point is: select a number of time points with equal time intervals according to the set time interval, record them as each time point, and detect the voltage and current of the distributor at each time point through the sensor, record them as , Indicates The number of the time point, , the voltage and current of the distributor at each time point are compared with the preset normal working voltage and current range of the distributor, and the voltage and current that are greater than the maximum value corresponding to the preset normal working voltage and current range of the distributor are screened out, and the corresponding time points are recorded as the top time points of the distributor, and the voltage and current at the top time points of the distributor are recorded as , Indicates The number of the tip time point, and At the same time, the power factor of the distributor at each time point is obtained by connecting the power factor measuring instrument to the distributor line, which is recorded as It can realize regular monitoring and comprehensive understanding of the electrical parameters of the distributor, which helps to detect abnormal situations in time, such as fluctuations in voltage or current.

[0034] The specific analysis method of the electrical performance test module is: read the voltage, current, and power factor of the distributor at each time point and calculate the average value of them to obtain the average voltage, current, and power factor of the distributor, which are recorded as , substituting it into the formula Get the voltage stability of the distributor , They represent the set voltage stability and voltage difference weight factors respectively. Indicates the maximum voltage value corresponding to the normal working voltage range of the set distributor. represents the number of time points, Represents the number of tip time points. According to the method of analyzing the voltage stability of the distributor, the current stability and power factor stability of the distributor are obtained, which are recorded as , substituting it into the formula Get the stability of the power system of the distributor , The weighting factors represent the voltage stability, current stability and power factor stability respectively; they can help to timely discover potential unstable factors so as to take targeted measures to adjust and optimize them and ensure the quality and reliability of power supply.

[0035] It should be noted that, in a specific embodiment, It can be set to 0.5. It can be set to 0.5. Voltage stability is crucial to the normal operation of many electrical equipment, because excessive or insufficient voltage fluctuations may damage the equipment or cause its performance to deteriorate, and current abnormalities may affect power distribution, line load, etc., and affect the reliability of the entire distribution system. Therefore, the weights of voltage and current are equal.

[0036] It should be noted that, in a specific embodiment, It can be set to 0.5. It can be set to 0.3. It can be set to 0.2. Voltage fluctuations have a significant impact on the normal operation of various types of electrical equipment. Many electronic equipment, precision instruments, etc. are very sensitive to voltage changes. Inappropriate voltage fluctuations may cause equipment failure, performance degradation, shortened service life, or even direct damage. Moreover, the stability of voltage is directly related to the reliability and safety of the entire power supply network. The stability of current is also very important. Current fluctuations may affect the heating of the line, the power output of the equipment, etc., but generally speaking, the adaptability of current is relatively strong within a certain range, and it is not as strict as voltage. At the same time, current will be affected by factors such as voltage and load to a certain extent. Although the stability of power factor will also affect the power quality and system efficiency, it is more related to reactive power. The immediate impact on direct electrical equipment is relatively less direct and critical than voltage and current. It is more considered from the aspects of energy utilization efficiency and the economy of power grid operation. Therefore, the weight corresponding to voltage stability is the highest, followed by current stability, and the weight corresponding to power factor stability is lower.

[0037] The insulation performance test module is used to obtain the insulation performance evaluation coefficient of the distributor based on the insulation resistance analysis between the inlet and outlet terminals of each phase line of the distributor. .

[0038] The specific analysis method of the insulation performance test module is: number the phase lines of the distributor in sequence according to the preset sequence, and record the numbers of the phase lines in sequence as After ensuring that the distributor is completely disconnected from the power supply, the insulation resistance between the inlet and outlet terminals of each phase line of the distributor is tested multiple times using a tester, and the insulation resistance between each phase line is recorded as , Indicates The number of the test, , substituting it into the formula Get the insulation performance evaluation coefficient of the distributor , Indicates the set insulation resistance standard value between phase lines. Indicates the number of phase lines, Indicates the number of tests; it can intuitively understand whether the insulation performance of the distributor is good, and promptly discover problems such as insulation performance degradation so that corresponding maintenance or replacement measures can be taken, thereby effectively preventing electrical failures and safety hazards caused by insulation problems and ensuring the stable and reliable operation of the entire power system.

[0039] The overload protection test module is used to analyze the reliability of the distributor overload protection by applying various overload currents to the distributor and recording the response time of each overload current of the distributor. .

[0040] The specific analysis method of the overload protection test module is: connect the distributor to the test circuit, and use the current source device to gradually increase the output current to the set current overload value, confirm whether the circuit is cut off when the distributor current is overloaded, and record the time taken by the distributor from starting to increase the current to cutting off the circuit, recorded as the distributor response time, set each current overload value in turn according to the set current range, recorded as each overload current of the distributor, adjust the overload current of the distributor according to the value of each overload current of the distributor, and obtain the response time of the distributor under each overload current according to the method of analyzing the distributor response time, recorded as each overload current response time of the distributor , Indicates The number of overload currents, , read the set duration of each overload current response of the distributor from the management database, recorded as , substituting it into the formula Get the reliability of the distributor overload protection , Indicates the set number of overload current; confirms whether the distributor can cut off the circuit in time when the current is overloaded, ensuring the safety of electricity use and preventing equipment damage or safety accidents caused by current overload.

[0041] The temperature performance test module is used to analyze the thermal stability evaluation coefficient of the distributor according to the heating rate, maximum temperature and temperature fluctuation degree of each load condition of the distributor. .

[0042] The specific analysis method of the temperature performance test module is: according to the set duration, a number of time points with equal time intervals are randomly selected from the working time of the distributor, which are recorded as each temperature time point, and different set loads are applied to the distributor respectively, which are recorded as each load condition, and the temperature of each temperature time point of each load condition of the distributor is monitored by a temperature sensor, which is recorded as ,in Indicates The number of load conditions, , Indicates The number of each temperature time point, , and the duration of the time interval is recorded as , and substitute into the formula Get the heating rate of the distributor under various load conditions , Indicates the distributor Load condition The temperature at a temperature time point, Indicates the number of temperature time points. The maximum value is selected from the temperature of each temperature time point under each load condition of the distributor and recorded as the maximum temperature of each load condition of the distributor. At the same time, the average temperature of each load condition of the distributor is obtained by taking the average temperature of each temperature time point under each load condition of the distributor, which is recorded as , substituting it into the formula Get the temperature fluctuation degree of each load condition of the distributor The degree of temperature fluctuation reflects the severity of the temperature change of the distributor. Smaller temperature fluctuations mean that the distributor operates more stably and the cooling system can effectively cope with load changes. Larger temperature fluctuations may indicate unstable cooling or other potential problems, which require in-depth analysis and resolution to improve the reliability and stability of the distributor.

[0043] The specific analysis method of the thermal stability evaluation coefficient of the distributor is: read the heating rate of each load condition of the distributor respectively , Maximum temperature , Temperature fluctuation , substituting it into the formula Get the thermal stability evaluation coefficient of the distributor , They represent the reference heating speed and high temperature threshold of the distributor under normal working conditions. They represent the weight factors of the set heating rate, maximum temperature, and temperature fluctuation degree, respectively. Represents the load condition number; it can help better understand the thermal characteristics of the power distributor so as to make more reasonable decisions during the design, improvement or use process, such as optimizing the heat dissipation structure, adjusting the workload, formulating maintenance plans, etc., thereby further improving the reliability, safety and performance of the power distributor.

[0044] It should be noted that, in a specific embodiment, It can be set to 0.2. It can be set to 0.4. It can be set to 0.4. The maximum temperature that the distributor can withstand is a key limit indicator. If this temperature is exceeded, the insulation performance of the equipment may decline, the aging of the material may be accelerated, and even failure or damage may occur, which has a direct and critical impact on the safety and reliability of the distributor. The degree of temperature fluctuation is also relatively important, because frequent and large temperature fluctuations will cause the material to repeatedly experience thermal expansion and contraction, which is prone to fatigue damage, and will reduce the service life of the distributor in the long run. At the same time, temperature fluctuations may also have an adverse effect on the performance of some precision components or electronic components, and a faster heating rate may mean that there are certain problems with heat dissipation, or in some cases it may bring certain thermal shocks. However, compared with the maximum temperature and the degree of temperature fluctuation, its immediate impact on the overall thermal stability of the distributor is relatively less prominent. Therefore, the weight corresponding to the heating rate is lower, and the weight corresponding to the maximum temperature and the degree of temperature fluctuation is higher.

[0045] The electromagnetic compatibility test module is used to obtain the voltage and current of the distributor at each test time point under each frequency corresponding to the electromagnetic interference source of each strength, screen the voltage and current of the distributor at each abnormal time point under each frequency corresponding to the electromagnetic interference source of each strength, and then analyze and obtain the electromagnetic interference resistance evaluation coefficient of the distributor. .

[0046] The specific analysis method of the electromagnetic compatibility test module is as follows: select a number of test time points at random according to the set duration, set a specific initial frequency and initial intensity for the electromagnetic wave generator, and place it in the electromagnetic test area, gradually increase the intensity and frequency of the electromagnetic interference source according to the set frequency difference and intensity difference, detect the voltage and current of the distributor at each test time point under the electromagnetic interference source of each intensity corresponding to each frequency, and at the same time read the voltage and current range of normal operation of the distributor from the management database, compare the voltage and current of the distributor at each test time point under the electromagnetic interference source of each intensity corresponding to each frequency with the voltage and current range of normal operation of the distributor, screen out the test time points where the voltage and current are not within the voltage and current range of normal operation of the distributor under the electromagnetic interference source of each intensity corresponding to each frequency, record them as abnormal time points, and record the voltage and current of the distributor at each abnormal time point under the electromagnetic interference source of each intensity corresponding to each frequency as , Indicates The number of the frequency, , Indicates The number of the intensity, , Indicates The number of the abnormal time point, , substituting it into the formula , Obtain the voltage anomaly degree of the distributor at each abnormal time point under each frequency corresponding to each intensity electromagnetic interference source , Abnormal degree of current , They respectively represent the maximum voltage and minimum voltage corresponding to the voltage range of the normal operation of the set distributor. They represent the maximum current and minimum current corresponding to the current range of the normal operation of the set distributor. Get the electromagnetic interference immunity evaluation coefficient of the distributor , Indicates the number of abnormal time points, Indicates the intensity setting number of the electromagnetic interference source, Indicates the frequency setting number of the electromagnetic interference source; comprehensively reflects the overall anti-interference ability of the distributor in the electromagnetic interference environment, provides an important basis for the electromagnetic compatibility design, improvement and performance evaluation of the distributor, and is conducive to improving the reliability and stability of the distributor working in a complex electromagnetic environment.

[0047] It should be noted that the initial frequency can select a representative starting point based on the common electromagnetic frequency range that the distributor may be affected by. The initial intensity should take into account the normal working environment of the distributor and the expected degree of possible interference. A relatively low intensity value that can effectively detect the impact is selected as the starting value. In a specific embodiment, the initial frequency of the electromagnetic wave generator can be set to , It is the industrial frequency, that is, the frequency of the alternating current we use in daily life. Power lines, etc. will generate electromagnetic interference of this frequency. It is representative and can better simulate the electromagnetic interference that may be encountered in the actual environment. The initial intensity can be set to This intensity can not only have a significant impact on the distributor for observation and analysis, but will not cause rapid damage to the distributor due to excessive intensity at the beginning, and its performance changes can be studied step by step.

[0048] The power distribution analysis module is used to detect the actual distribution data of the power distribution device and compare it with the stored power distribution rules to obtain the power distribution accuracy evaluation coefficient of the power distribution device. ,The actual distribution data includes the average voltage and average current of each ,measurement point under the set load.

[0049] The specific analysis method of the power distribution analysis module is as follows: number each branch of the inlet and outlet of the distributor in a set order, record them as measurement points, connect the test equipment to each measurement point of the distributor in turn, and select a number of time points with equal time intervals from the working time of the distributor at random, record them as measurement time points, detect the voltage and current of each measurement point at each measurement time point under the set load, and obtain the average voltage and average current of each measurement point under the set load by taking the average value, which is recorded as , Indicates The number of the measuring point, , read the standard electric energy data specified at each measuring point in the preset electric energy distribution rules from the management database, and record the voltage and current specified at each measuring point as , through the formula , Get the voltage accuracy of the distributor , Current accuracy , substituting it into the formula Get the power distribution accuracy evaluation coefficient of the distributor , The weighting factors that represent the accuracy of the set voltage and current. They fully reflect the accuracy of the power distribution of the distributor, and provide an important basis for evaluating the performance of the distributor, discovering possible problems, and making optimization improvements. They help ensure that the distributor distributes power accurately as expected, improve its working stability and reliability, and ensure the normal operation of related systems or equipment.

[0050] It should be noted that, in a specific embodiment, It can be set to 0.7. It can be set to 0.3. Many electrical equipment have very strict requirements on voltage. A slight deviation in voltage may cause abnormal operation of the equipment, performance degradation or even damage. Secondly, voltage directly affects the transmission quality and efficiency of electric energy, and plays a key role in the stability and reliability of the entire power system. Furthermore, in some occasions with extremely high requirements on power quality, such as precision instruments and equipment, electronic manufacturing and other fields, precise control of voltage is crucial. The current will be affected by voltage and load to a certain extent, and its accuracy is not as important as voltage. In most cases, as long as the voltage can be kept accurate, the current will also be relatively stable and accurate. Therefore, the weight corresponding to the voltage accuracy is higher.

[0051] The comprehensive performance analysis module is used to obtain the comprehensive performance evaluation index of the distributor through comprehensive analysis and provide feedback thereto.

[0052] The specific analysis method of the comprehensive performance analysis module is:

[0053] Read the stability of the power system of the distributor separately , Insulation performance evaluation coefficient , Reliability of overload protection , Thermal stability evaluation coefficient , Electromagnetic interference immunity evaluation coefficient , Electricity distribution accuracy assessment coefficient , substituting it into the formula Get the comprehensive performance evaluation index of the distributor ,in They represent the weight factors of the set power system stability, insulation performance evaluation coefficient, overload protection reliability, thermal stability evaluation coefficient, electromagnetic interference immunity evaluation coefficient, and power distribution accuracy evaluation coefficient. is a natural constant, and the comprehensive performance evaluation index of the distribution device is compared with the preset qualified value of the comprehensive performance evaluation index. If the comprehensive performance evaluation index of the distribution device is greater than or equal to the preset qualified value of the comprehensive performance evaluation index, it means that the comprehensive performance evaluation index of the distribution device is qualified, otherwise it means that it is unqualified, and feedback is given to the system; the quantitative evaluation of the comprehensive performance of the distribution device is realized, which makes the judgment of its performance more scientific and objective, and is conducive to improving the overall quality and performance of the distribution device, ensuring that it can meet the requirements of various working scenarios.

[0054] It should be noted that, in a specific embodiment, It can be set to 0.2. It can be set to 0.2. It can be set to 0.2. Can be set to 0.1, Can be set to 0.1, It can be set to 0.2. The stability of the power system is directly related to the continuity and reliability of the entire power supply. An unstable power system will lead to serious problems such as equipment failure and production interruption. It is the basis and key to the performance of the distributor. Good insulation performance is an important factor to ensure safety. It avoids dangerous situations such as leakage and short circuit, which is of great significance to personal safety and normal operation of equipment. Reliable overload protection can prevent the distributor from being damaged due to overload, protect the safety of equipment and system, and reduce the risk of failure. Although thermal stability is very important, its impact may not be as direct and urgent as the previous factors. Electromagnetic anti-interference ability mainly affects the normal operation of the distributor in the electromagnetic environment, but it is generally not the most core determining factor. The accuracy of power distribution directly affects the normal operation and working effect of the connected equipment. If the distribution is not accurate, it may lead to unstable performance, reduced efficiency or even damage to the equipment. Therefore, the weights corresponding to the stability of the power system, the insulation performance evaluation coefficient, the reliability of overload protection, and the power distribution accuracy evaluation coefficient are relatively high.

[0055] The management database is used to store the set duration of each overload current response of the distributor, the standard power data specified at each measurement point in the power distribution rules, and the voltage and current range for normal operation of the distributor.

[0056] The present invention detects the actual distribution data of the electric energy of the distributor and compares it with the stored electric energy distribution rules to obtain the electric energy distribution accuracy evaluation coefficient of the distributor. The comprehensive performance evaluation index of the distributor is obtained by comprehensively analyzing the stability of the electric energy system, the insulation performance evaluation coefficient, the reliability of overload protection, the thermal stability evaluation coefficient, the electromagnetic anti-interference capability evaluation coefficient and the electric energy distribution accuracy evaluation coefficient of the distributor. This ensures that the distributor can operate stably under various working conditions, provides continuous and reliable power supply for the connected equipment, and avoids equipment damage or work interruption due to instability.

[0057] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. An intelligent testing system for electrical distribution products. It is characterized in that The system specifically includes the following modules: The electrical performance test module is used to analyze the electrical parameters of the distributor at each time point to obtain the stability of the power system of the distributor. , electrical parameters include voltage, current, and power factor; The insulation performance test module is used to obtain the insulation performance evaluation coefficient of the distributor based on the insulation resistance analysis between the inlet and outlet terminals of each phase line of the distributor. ; The overload protection test module is used to analyze the reliability of the distributor overload protection by applying various overload currents to the distributor and recording the response time of each overload current of the distributor. ; The temperature performance test module is used to analyze the thermal stability evaluation coefficient of the distributor according to the heating rate, maximum temperature and temperature fluctuation degree of each load condition of the distributor. ; The electromagnetic compatibility test module is used to obtain the voltage and current of the distributor at each test time point under each frequency corresponding to the electromagnetic interference source of each strength, screen the voltage and current of the distributor at each abnormal time point under each frequency corresponding to the electromagnetic interference source of each strength, and then analyze and obtain the electromagnetic interference resistance evaluation coefficient of the distributor. ; The power distribution analysis module is used to detect the actual distribution data of the power distribution device and compare it with the stored power distribution rules to obtain the power distribution accuracy evaluation coefficient of the power distribution device. ,The actual distribution data includes the average voltage and average current of each measurement point under the set load; Comprehensive performance analysis module, used to obtain the comprehensive performance evaluation index of the distributor through comprehensive analysis and provide feedback; Management database, used to store the set duration of each overload current response of the distributor, the standard power data specified at each measurement point in the power distribution rules, and the voltage and current range of the normal operation of the distributor; The specific analysis method of the comprehensive performance analysis module is: Read the stability of the power system of the distributor separately , Insulation performance evaluation coefficient , Reliability of overload protection , Thermal stability evaluation coefficient , Electromagnetic interference immunity evaluation coefficient , Electricity distribution accuracy assessment coefficient , substituting it into the formula Get the comprehensive performance evaluation index of the distributor ,in They represent the weight factors of the set power system stability, insulation performance evaluation coefficient, overload protection reliability, thermal stability evaluation coefficient, electromagnetic interference immunity evaluation coefficient, and power distribution accuracy evaluation coefficient. The comprehensive performance evaluation index of the distributor is compared with the preset qualified value of the comprehensive performance evaluation index. If the comprehensive performance evaluation index of the distributor is greater than or equal to the preset qualified value of the comprehensive performance evaluation index, it means that the comprehensive performance evaluation index of the distributor is qualified. Otherwise, it is unqualified and feedback is given to the system.

2. According to claim 1, an intelligent testing system for electrical distribution products, It is characterized in that The specific analysis method of the electrical parameters of the distributor at each time point is: According to the set time interval, several time points with equal time intervals are selected and recorded as each time point. The voltage and current of the distributor at each time point are detected by the sensor and recorded as , Indicates The number of the time point, , the voltage and current of the distributor at each time point are compared with the preset normal working voltage and current range of the distributor, and the voltage and current that are greater than the maximum value corresponding to the preset normal working voltage and current range of the distributor are screened out, and the corresponding time points are recorded as the top time points of the distributor, and the voltage and current at the top time points of the distributor are recorded as , Indicates The number of the tip time point, and At the same time, the power factor of the distributor at each time point is obtained by connecting the power factor measuring instrument to the distributor line, which is recorded as .

3. According to claim 2, an intelligent testing system for electrical distribution products, It is characterized in that The specific analysis method of the electrical performance test module is: Read the voltage, current, and power factor of the distributor at each time point and calculate the average value of each value to obtain the average voltage, current, and power factor of the distributor, which are recorded as , substituting it into the formula Get the voltage stability of the distributor , They represent the set voltage stability and voltage difference weight factors respectively. Indicates the maximum voltage value corresponding to the normal working voltage range of the set distributor. represents the number of time points, Represents the number of tip time points. According to the method of analyzing the voltage stability of the distributor, the current stability and power factor stability of the distributor are obtained, which are recorded as , substituting it into the formula Get the stability of the power system of the distributor , They represent the weighting factors of voltage stability, current stability, and power factor stability respectively.

4. According to claim 1, an intelligent testing system for electrical distribution products, It is characterized in that The specific analysis method of the insulation performance test module is: The phase lines of the distributor are numbered in sequence according to the preset order, and the numbers of the phase lines are recorded in sequence as After ensuring that the distributor is completely disconnected from the power supply, the insulation resistance between the inlet and outlet terminals of each phase line of the distributor is tested multiple times using a tester, and the insulation resistance between each phase line is recorded as , Indicates The number of the test, , substituting it into the formula Get the insulation performance evaluation coefficient of the distributor , Indicates the set insulation resistance standard value between phase lines. Indicates the number of phase lines, Indicates the number of detections.

5. According to claim 1, an intelligent testing system for electrical distribution products, It is characterized in that The specific analysis method of the overload protection test module is: Connect the distributor to the test circuit, and use the current source device to gradually increase the output current to the set current overload value, confirm whether the circuit is cut off when the distributor current is overloaded, and record the time taken by the distributor from the beginning of increasing the current to cutting off the circuit, which is recorded as the distributor response time. Set each current overload value in sequence according to the set current range, which is recorded as each overload current of the distributor. Adjust the overload current of the distributor according to the value of each overload current of the distributor, and obtain the response time of the distributor under each overload current according to the method of analyzing the response time of the distributor, which is recorded as each overload current response time of the distributor. , Indicates The number of overload currents, , read the set duration of each overload current response of the distributor from the management database, recorded as , substituting it into the formula Get the reliability of the distributor overload protection , Indicates the set amount of overload current.

6. According to claim 1, an intelligent testing system for electrical distribution products, It is characterized in that The specific analysis method of the temperature performance test module is: According to the set duration, several time points with equal time intervals are randomly selected from the working time of the distributor, which are recorded as temperature time points. At the same time, different set loads are applied to the distributor respectively, which are recorded as load conditions. The temperature of each temperature time point of each load condition of the distributor is monitored by the temperature sensor, which is recorded as ,in Indicates The number of load conditions, , Indicates The number of each temperature time point, , and the duration of the time interval is recorded as , and substitute into the formula Get the heating rate of the distributor under various load conditions , Indicates the distributor Load condition The temperature at a temperature time point, Indicates the number of temperature time points. The maximum value is selected from the temperature of each temperature time point under each load condition of the distributor and recorded as the maximum temperature of each load condition of the distributor. At the same time, the average temperature of each load condition of the distributor is obtained by taking the average temperature of each temperature time point under each load condition of the distributor, which is recorded as , substituting it into the formula Get the temperature fluctuation degree of each load condition of the distributor .

7. An intelligent testing system for electrical distribution products according to claim 6, It is characterized in that The specific analysis method of the thermal stability evaluation coefficient of the distributor is: Read the heating rate of each load condition of the distributor separately , Maximum temperature , Temperature fluctuation , substituting it into the formula Get the thermal stability evaluation coefficient of the distributor , They represent the reference heating speed and high temperature threshold of the distributor under normal working conditions. They represent the weight factors of the set heating rate, maximum temperature, and temperature fluctuation degree, respectively. Indicates the load condition number.

8. The intelligent testing system for power distribution products according to claim 1, It is characterized in that The specific analysis method of the electromagnetic compatibility test module is: Select a number of test time points at random according to the set duration, set a specific initial frequency and initial intensity for the electromagnetic wave generator, and place it in the electromagnetic test area, gradually increase the intensity and frequency of the electromagnetic interference source according to the set frequency difference and intensity difference, detect the voltage and current of the distributor at each test time point under the electromagnetic interference source of each intensity at each frequency, and read the voltage and current range of normal operation of the distributor from the management database at the same time, compare the voltage and current of the distributor at each test time point under the electromagnetic interference source of each intensity at each frequency with the voltage and current range of normal operation of the distributor, screen out the test time points where the voltage and current are not within the voltage and current range of normal operation of the distributor under the electromagnetic interference source of each intensity at each frequency, and record them as abnormal time points, and record the voltage and current of the distributor at each abnormal time point under the electromagnetic interference source of each intensity at each frequency as , Indicates The number of the frequency, , Indicates The number of the intensity, , Indicates The number of the abnormal time point, , substituting it into the formula , Obtain the voltage anomaly degree of the distributor at each abnormal time point under each frequency corresponding to each intensity electromagnetic interference source 、Current abnormality , They respectively represent the maximum voltage and minimum voltage corresponding to the voltage range of the normal operation of the set distributor. They represent the maximum current and minimum current corresponding to the current range of the normal working state of the set distributor. Get the electromagnetic interference immunity evaluation coefficient of the distributor , Indicates the number of abnormal time points, Indicates the intensity setting number of the electromagnetic interference source, Indicates the frequency setting number of the electromagnetic interference source.

9. The intelligent testing system for power distribution products according to claim 1, It is characterized in that The specific analysis method of the electric energy distribution analysis module is: Number each branch at the inlet and outlet of the distributor in the set order and record them as measurement points. Connect the test equipment to the measurement points of the distributor in sequence, and select a number of time points with equal time intervals from the working time of the distributor as measurement time points. Detect the voltage and current of each measurement point at each measurement time point under the set load, and obtain the average voltage and average current of each measurement point under the set load by taking the average value, which is recorded as , Indicates The number of the measuring point, , read the standard electric energy data specified at each measuring point in the preset electric energy distribution rules from the management database, and record the voltage and current specified at each measuring point as , through the formula , Get the voltage accuracy of the distributor , Current accuracy , substituting it into the formula Get the power distribution accuracy evaluation coefficient of the distributor , Indicates the weight factor of the set voltage accuracy and current accuracy.

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