Detection method and system of line protection switch and storage medium

Abstract

The invention relates to the technical field of protection switch detection, and discloses a line protection switch detection method and system and a storage medium, and the method comprises the steps: obtaining a device number of a to-be-detected device, and obtaining a corresponding detection data packet through matching; the detection type and action data in the detection data packet are analyzed, the detection type is thermal protection detection or electromagnetic protection detection, and the action data are action steps for detecting the end of the coil; if the detection type is a thermal protection detection type, the end part of the detection coil is moved to one side of a protection action part or arranged in a surrounding manner, and is heated until a circuit breaking action is generated; if the temperature of the protection action part is detected to be within the temperature range and the circuit break action is performed, the operation is normal; otherwise, abnormity; if electromagnetic protection detection is carried out, moving the end part of a detection coil to one side of a protection action part, applying a simulated magnetic field, recording a trigger time value of the protection action part in the magnetic field, and if the trigger time value is less than a reference time value, determining that the protection action part is normal; otherwise, abnormity is realized. According to the invention, the protection switch can be conveniently inspected or checked.

Description

Technical Field

[0001] The present application relates to the technical field of protection switch detection, and in particular to a detection method, system and storage medium for a line protection switch. Background Art

[0002] Line protection switchgear refers to a type of electrical equipment installed in the line, mainly used to control and protect the line network. Line protection switchgear can automatically disconnect the circuit when a fault occurs. Line protection switchgear has thermal protection mechanism and electromagnetic protection mechanism.

[0003] The thermal protection mechanism achieves tripping by monitoring the temperature changes of electrical components. When an overload or short circuit occurs in the circuit, the current will increase, causing the electrical components to generate a lot of heat. If this heat cannot be dissipated in time, the temperature of the component will rise. When the temperature exceeds the maximum allowable temperature, the thermal relay will automatically trip and cut off the power supply, thereby protecting the circuit and equipment from damage. The electromagnetic protection mechanism achieves tripping by monitoring the change of current. In some devices, such as coil relays, AC contactors, etc., when the current in the circuit is too large, the electromagnet will generate a strong magnetic field, causing the iron sheet on the core to displace, thereby triggering the tripping action. This mechanism is usually used in situations where a quick response is required, and it can quickly cut off the power supply when the current is abnormal.

[0004] Although the line protection switch device has a protective function, the protection action components need to be inspected before leaving the factory, or the protection action components need to be checked after long-term use. If the inspection or check fails, the line protection switch device cannot be used normally. The existing inspection or check method is to connect the line protection switch device to the detection circuit separately for inspection. Each inspection requires a large number of wires to be plugged in, which is cumbersome, time-consuming and labor-intensive. Summary of the invention

[0005] In order to be able to test or inspect a line protection switch device without having to separately connect it to a detection circuit, the present application provides a detection method, system and storage medium for a line protection switch.

[0006] In a first aspect, the present application provides a detection method for a line protection switch, which adopts the following technical solution:

[0007] A detection method for a line protection switch comprises the following steps:

[0008] Get the device number of the device to be detected;

[0009] Matching a detection data packet corresponding to the device to be detected from a preset database according to the device number;

[0010] Parsing the detection data packet, wherein the data contained in the detection data packet includes a detection type and action data, wherein the detection type includes thermal protection detection or electromagnetic protection detection, and the action data includes an action step for detecting the coil end;

[0011] If the detection type is a thermal protection detection type, a thermal detection signal is issued; if the detection type is an electromagnetic protection detection, an electromagnetic detection signal is issued;

[0012] Based on the heat detection signal, the end of the detection coil is moved to one side of the protection action component of the device to be detected or surrounds the protection action component of the device to be detected, and the protection action component is heated by the detection coil until the protection action component generates a circuit-breaking action; the temperature of the protection action component is detected as the component temperature, and if the component temperature is within a preset temperature range and the protection action component generates a circuit-breaking action, a prompt is issued that the device to be detected is normal; otherwise, a prompt is issued that the device to be detected is abnormal;

[0013] Based on the electromagnetic detection signal, the end of the detection coil is moved to one side of the protection action component of the device to be detected, and a simulated magnetic field is applied to the protection action component through the detection coil. The duration during which the protection action component does not perform a protection action in the simulated magnetic field is recorded as the trigger time value. If the trigger time value is less than the preset reference time value, a prompt is issued that the device to be detected is normal; otherwise, a prompt is issued that the device to be detected is abnormal.

[0014] By adopting the above technical solution, the detection data packet is matched according to the device number to ensure that the detection process is fully matched with the device to be detected. Through the automated and standardized detection process, manual wiring and tedious operations are reduced. The status of the device to be detected can be quickly and accurately determined, improving the detection efficiency. Combining databases and automated detection methods, intelligent and automated detection is achieved.

[0015] Optionally, based on the heat detection signal, the end of the detection coil is moved to a side of a protection action component of the device to be detected:

[0016] The end of the detection coil is a self-heating coil, and the self-heating coil heats the protective action component of the device to be detected through heat conduction;

[0017] According to the rated power of the protection action component of the device to be detected, the output power of the self-heating coil is adjusted in a positive correlation; the greater the rated power, the greater the output power; the smaller the rated power, the smaller the output power.

[0018] By adopting the above technical solution, the self-heating coil and adjustable heating speed make the heating process faster and more accurate, thereby shortening the detection time. By accurately controlling the heating speed and temperature, the actual fault situation can be simulated more accurately, so as to more accurately judge the status of the device to be detected. By adjusting the heating current, energy consumption can be reduced while ensuring the detection effect, thus achieving green detection.

[0019] Optionally, based on the heat detection signal, the end of the detection coil is moved to a side of a protection action component of the device to be detected:

[0020] The end of the detection coil is an induction cooker coil, and the induction cooker coil heats the protective action component of the device to be detected by induction heating;

[0021] According to the rated power of the protection action component of the device to be detected, the output power of the induction cooker coil is adjusted in a positive correlation; the greater the rated power, the greater the output power; the smaller the rated power, the smaller the output power.

[0022] By adopting the above technical solution, since the induction cooker coil works by induction heating, it does not require additional fuel or medium to generate heat, thereby reducing energy consumption and emissions during the test. At the same time, since the output power of the induction cooker coil can be accurately adjusted, it can be flexibly adjusted according to different test requirements, thereby improving the efficiency and accuracy of the test.

[0023] Optionally, based on the heat detection signal, the end of the detection coil is moved to a protective action component surrounding the device to be detected:

[0024] The end of the detection coil is an intermediate frequency coil, and the intermediate frequency coil surrounds the protection action component;

[0025] According to the rated power of the protection action component of the equipment to be detected, the heating power of the intermediate frequency coil is adjusted in a positive correlation; the greater the rated power, the greater the heating power; the smaller the rated power, the smaller the heating power.

[0026] By adopting the above technical solution, the accuracy and reliability of the test can be improved because the medium frequency coil can evenly transfer heat to the component to be tested. Secondly, by adjusting the heating power and heating speed, the test process can be precisely controlled to meet different test requirements. Finally, this method also has the advantages of high efficiency and environmental protection, because medium frequency induction heating does not require additional fuel or medium to generate heat, reducing energy consumption and emissions.

[0027] Optionally, based on the electromagnetic detection signal, the end of the detection coil is moved to a side of a protective action component of the device to be detected:

[0028] The end of the detection coil is a coil for generating a directional magnetic field, and the generated directional magnetic field causes the protective action component to be activated.

[0029] By adopting the above technical solution, the end of the detection coil is moved to the side of the protective action component of the device to be tested, and the magnetic field generated by it is used to trigger or detect the action of the protective action component. The risks and inconveniences that may be caused by direct operation of the protective action component are avoided; the test task can be completed quickly and accurately, and the test efficiency is improved; no damage or injury is caused to the equipment and personnel during the test process; and the test requirements of protective action components of different models and specifications can also be met.

[0030] Optionally, based on the electromagnetic detection signal, the end of the detection coil is moved to a protective action component surrounding the device to be detected:

[0031] The end of the detection coil is a coil for generating a directional magnetic field, and the generated directional magnetic field causes the protective action component to be activated.

[0032] By adopting the above technical solution, the end of the detection coil should be designed to be a shape that can completely or partially surround the protection action component to ensure that the electromagnetic field can act evenly on the entire component. When the end of the detection coil is energized, it will generate a strong electromagnetic field. The intensity and frequency of this electromagnetic field can be adjusted as needed to meet the testing requirements of different protection action components. Under the action of the electromagnetic field, the protection action component will be affected by magnetic force or electromagnetic induction, resulting in action. These actions may include attraction, release, jump, etc., depending on the type and purpose of the protection action component. By observing and analyzing these actions, performance indicators such as the response speed, stability and reliability of the protection action component can be evaluated.

[0033] Optionally, the step of detecting the temperature of the protection action component as a component temperature includes:

[0034] Obtaining the temperature of the component by means of an infrared sensor disposed at the protection action component;

[0035] Alternatively, the temperature of the component is obtained by a temperature sensor disposed at the protection action component;

[0036] Alternatively, the first temperature is obtained by an infrared sensor disposed at the protection action component, the second temperature is obtained by a temperature sensor disposed at the protection action component, and the component temperature is calculated by weighted averaging the first temperature and the second temperature.

[0037] By adopting the above technical solution, infrared sensors can be selected for scenarios that require rapid temperature measurement and do not require high accuracy; temperature sensors can be selected for scenarios that require high-precision temperature measurement and can contact the object to be measured; and for scenarios that need to comprehensively consider multiple factors, the weighted method of infrared temperature measurement and temperature sensors can be selected.

[0038] Optionally, the step of determining whether the protection action component generates a circuit-breaking action includes:

[0039] Collecting sound wave data at the protection action component;

[0040] Matching the collected sound wave data with a preset sound wave database, and if a specific sound wave feature is matched from the sound wave database, it is determined that the protection action component generates a circuit breaker action;

[0041] Alternatively, collecting an infrared image or a normal image of the protection action component;

[0042] Analyze the action area of ​​the infrared image or the ordinary image, match the collected action area of ​​the infrared image or the ordinary image with a preset image library, and if a specific image feature is matched from the image library, determine that the protection action component generates a circuit breaker action;

[0043] Alternatively, collecting sound wave data and image data at the protection action component;

[0044] Matching the collected sound wave data with a preset sound wave database, if a specific sound wave feature is matched from the sound wave database, it is recorded as a first result;

[0045] Analyze the motion area of ​​the infrared image or the ordinary image, match the motion area of ​​the collected image data with a preset image library, and if a specific image feature is matched from the image library, record it as a second result;

[0046] A weighted result is obtained by weighted averaging the first result and the second result. If the weighted result is within a preset range, it is determined that the protection action component generates a circuit breaker action.

[0047] By adopting the above technical solution, by acquiring the sound wave data and / or image data at the protection action component, and performing matching, analysis and weighted processing, it is possible to accurately determine whether it has generated a circuit breaker action. The third method combines the information of both sound waves and images to improve the accuracy and reliability of the judgment.

[0048] In a second aspect, the present application provides a detection system for a line protection switch, which adopts the following technical solution:

[0049] A detection system for a line protection switch comprises a processor, wherein the processor executes the steps of any one of the above-mentioned detection methods for a line protection switch.

[0050] In a third aspect, the present application provides a storage medium, which adopts the following technical solution:

[0051] A storage medium stores a program, wherein the program, when executed by a processor, implements the steps of any one of the above-mentioned line protection switch detection methods.

[0052] In summary, the present application includes at least one of the following beneficial technical effects:

[0053] Through the preset database and automated detection process, the complexity and error rate of manual operation are reduced, and the efficiency and accuracy of detection are improved. It can send corresponding detection signals according to different detection types (thermal protection detection or electromagnetic protection detection) to adapt to different types of protection switch detection needs. By accurately controlling the heating of the protection action parts by the detection coil or applying a simulated magnetic field, the real working conditions can be simulated to more accurately evaluate the performance of the protection switch. During the detection process, it can ensure that the detection personnel do not directly contact high-voltage or dangerous parts, which improves the safety of the detection process.

[0054] By comparing the component temperature and trigger time values ​​with the preset reference values, it is possible to determine whether the protection switch is working properly, detect potential faults in time, and reduce the risk of accidents. The detection process can quickly give the test results, whether normal or abnormal, and can give immediate feedback, so that appropriate measures can be taken in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 The present invention is a step diagram of a detection method of a line protection switch.

[0056] Figure 2 This is a diagram of a detection device using a self-heating coil.

[0057] Figure 3 This is a diagram of a detection device using an induction cooker coil.

[0058] Figure 4 This is a diagram of a detection device using a medium frequency coil.

[0059] Figure 5 is a diagram of a detection device using a first coil.

[0060] Figure 6 FIG. 4 is a diagram of a detection device using a second coil.

[0061] Figure numerals: 1, telescopic rod; 2, insulating sleeve; 3, test power supply; 4, self-heating coil; 5, induction cooker coil; 6, medium frequency coil; 7, first coil; 8, second coil. DETAILED DESCRIPTION

[0062] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings.

[0063] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0064] The present application embodiment discloses a detection method for a line protection switch, referring to Figure 1 , including the following steps:

[0065] Obtain the device number of the device to be detected; the acquisition method can be achieved by manual input, so as to obtain the device number of the detection device in this detection method.

[0066] According to the device number, the preset database is searched for a data packet that matches the device number to be detected; the database should contain detection data packets of various devices, each of which is associated with a specific device number. After a successful match, the detection data packet corresponding to the device to be detected will be obtained.

[0067] Parse the test data packet, which contains the test type and action data. Indicate the test type of the device to be tested, such as thermal protection test or electromagnetic protection test. Describe the action steps of the detection coil end in detail to provide guidance for subsequent test operations.

[0068] If the detection type is a thermal protection detection type, a thermal detection signal is issued; this signal will trigger a corresponding thermal protection detection mechanism to detect the thermal protection performance of the device.

[0069] Based on the heat detection signal, the end of the detection coil is moved to the side of the protection action component of the device to be detected or directly surrounds the protection action component of the device to be detected. The protection action component is heated by the detection coil to simulate abnormal conditions such as overload or short circuit that may cause temperature rise until the protection action component generates a circuit-breaking action. The temperature of the protection action component is detected as the component temperature. If the component temperature is within the preset temperature range and the protection action component generates a circuit-breaking action, a prompt is issued that the device to be detected is normal; otherwise, a prompt is issued that the device to be detected is abnormal.

[0070] If the detection type is electromagnetic protection detection, an electromagnetic detection signal will be issued; this signal will activate the electromagnetic protection detection process to verify the electromagnetic protection performance of the equipment.

[0071] Based on the electromagnetic detection signal, the end of the detection coil is moved to the side of the protection action component of the device to be detected, and a simulated magnetic field is applied to the protection action component through the detection coil to simulate abnormal conditions that may trigger electromagnetic protection action, such as current overload, short circuit, etc.; the duration of the protection action component not performing a protection action in the simulated magnetic field is recorded as the trigger time value, that is, the period from the start of the detection to the time before the protection action component is activated is the trigger time value. If the trigger time value is less than the preset reference time value, it means that the protection action component can respond quickly after receiving the abnormal signal, and a prompt is issued that the device to be detected is normal; if the trigger time value is greater than or equal to the preset reference time value, it means that the protection action component responds slowly or does not respond, and a prompt is issued that the device to be detected is abnormal.

[0072] Detailed detection process designs were conducted for thermal protection and electromagnetic protection respectively. The normality of the equipment was judged by simulating abnormal conditions and observing the response of the protection action components. This method can effectively detect potential problems of line protection switches and ensure the safety and reliability of the equipment. The detection data package is matched according to the equipment number to ensure that the detection process is fully matched with the equipment to be detected. Through the automated and standardized detection process, manual wiring and tedious operations are reduced. The status of the equipment to be detected can be judged quickly and accurately, improving the detection efficiency. The combination of database and automated detection means realizes the intelligent and automated detection.

[0073] Based on the thermal detection signal, move the end of the detection coil to the side of the protective action component of the device to be detected:

[0074] Reference Figure 2, the end of the detection coil is a self-heating coil 4, and the self-heating coil 4 is moved to the side of the protection action component of the device to be detected. Ensure that there is good heat conduction contact between the self-heating coil 4 and the protection action component. The self-heating coil 4 heats the protection action component of the device to be detected by heat conduction. The self-heating coil 4 generates heat through current and transfers the heat to the protection action component of the device to be detected by heat conduction. This process simulates abnormal conditions such as overload or short circuit that the device may encounter in actual use, resulting in temperature rise.

[0075] In practical applications, the detection device can be provided through a telescopic rod 1, one end of which is provided with an insulating sleeve 2, and is held by a worker wearing protective equipment. A test device is installed at the other end, and the test device includes a test power supply 3 and a corresponding coil. Figure 2 The self-heating coil 4 is in the middle. In other detection processes, when the unused monitoring coil is needed, the coil can be replaced with the corresponding detection coil, and then the detection is carried out close to the protection action component of the device to be detected.

[0076] According to the rated power of the protection action component of the device to be tested, the output power of the self-heating coil 4 is adjusted in a positive correlation; the larger the rated power, the greater the output power; the smaller the rated power, the smaller the output power. The rated power is the maximum power that the device can withstand during normal operation, which reflects the device's tolerance to heat. If the rated power of the protection action component is large, it means that it can withstand higher temperatures without failure, so the output power of the self-heating coil 4 can be increased accordingly to more fully simulate the high temperature environment. Conversely, if the rated power is small, the output power should be reduced to avoid damage to the device due to overheating.

[0077] During the heating process, the temperature changes of the protection action components and whether a circuit breaker action occurs are continuously monitored.

[0078] If the component temperature is within the preset safety range, which is usually determined based on the equipment's design specifications and safety standards, and the protection action component can promptly trip after reaching the set temperature, it means that the thermal protection function of the equipment is normal.

[0079] If the component temperature exceeds the preset range, or the protection action component fails to produce a circuit breaker action in time, it indicates that the thermal protection function of the equipment may be abnormal and requires further inspection or repair.

[0080] The self-heating coil 4 and the adjustable heating speed make the heating process faster and more accurate, thereby shortening the detection time. By accurately controlling the heating speed and temperature, the actual fault situation can be simulated more accurately, thereby more accurately judging the status of the device to be detected. By adjusting the heating current, energy consumption can be reduced while ensuring the detection effect, thereby achieving green detection.

[0081] Based on the thermal detection signal, move the end of the detection coil to the side of the protective action component of the device to be detected:

[0082] Reference Figure 3 The end of the detection coil is an induction cooker coil 5, which heats the protective action component of the device to be detected by induction heating. Move the induction cooker coil 5 to the side of the protective action component of the device to be detected, and ensure that there is a certain gap between the induction cooker coil 5 and the protective action component so that heating can be performed using the principle of induction heating. The induction cooker coil 5 generates a changing magnetic field through an alternating current. This magnetic field will induce eddy currents in the protective action component (usually a metal component). When the eddy currents flow inside the metal component, heat will be generated, thereby achieving induction heating.

[0083] According to the rated power of the protection action component of the device to be tested, the output power of the induction cooker coil 5 is adjusted in a positive correlation; the greater the rated power, the greater the output power; the smaller the rated power, the smaller the output power. The rated power is the maximum power that the device can withstand during normal operation, reflecting the device's tolerance to heat. If the rated power of the protection action component is large, it means that it can withstand higher temperatures without failure, so the output power of the induction cooker coil 5 can be increased accordingly to more fully simulate the high temperature environment. Conversely, if the rated power is small, the output power should be reduced to avoid damage to the device due to overheating.

[0084] During the heating process, a temperature sensor is used to continuously monitor the temperature changes of the protective action parts and record the data.

[0085] At the same time, observe whether the protection action component produces a circuit-breaking action within the specified time, that is, disconnects the circuit to prevent further damage.

[0086] Based on the monitoring results and preset judgment criteria (such as temperature threshold and action time), determine whether the thermal protection function of the equipment is normal.

[0087] Since the induction cooker coil 5 works by induction heating, it does not require additional fuel or medium to generate heat, thereby reducing energy consumption and emissions during the test. At the same time, since the output power of the induction cooker coil 5 can be precisely adjusted, it can be flexibly adjusted according to different test requirements, thereby improving the efficiency and accuracy of the test.

[0088] Based on the thermal detection signal, the end of the detection coil is moved to the protective action component surrounding the device to be detected:

[0089] Reference Figure 4, the end of the detection coil is an intermediate frequency coil 6, and the intermediate frequency coil 6 surrounds the protective action component; the intermediate frequency coil 6 is arranged into a shape that surrounds the protective action component of the device to be detected, ensuring that there is an appropriate gap between the intermediate frequency coil 6 and the protective action component, so that heating can be performed using the principle of induction heating while ensuring a safe distance. The intermediate frequency coil 6 generates a changing magnetic field through an intermediate frequency current, and this magnetic field induces eddy currents in the protective action component (usually a metal component). When the eddy currents flow inside the metal component, heat is generated, thereby realizing surrounding induction heating. Among them, the middle part of the coil is a disconnectable and connectable point, which is convenient for the detection process, first disconnecting, then surrounding the protective action component, and then connecting, so as to realize the action of surrounding the protective action component of the device to be detected.

[0090] According to the rated power of the protection action component of the equipment to be tested, the heating power of the intermediate frequency coil 6 is adjusted in a positive correlation; the larger the rated power, the greater the heating power; the smaller the rated power, the smaller the heating power. The rated power is the maximum power that the equipment can withstand during normal operation, which reflects the equipment's tolerance to heat. If the rated power of the protection action component is large, it means that it can withstand higher temperatures without failure, so the heating power of the intermediate frequency coil 6 can be increased accordingly to more fully simulate the high temperature environment and test the thermal protection performance of the equipment. Conversely, if the rated power is small, the heating power should be reduced to avoid damage to the equipment due to overheating.

[0091] During the heating process, the temperature sensor is used to continuously monitor the temperature changes of the protection action parts and record the data. At the same time, it is observed whether the protection action parts produce a circuit-breaking action within the specified time, that is, disconnect the circuit to prevent further damage.

[0092] Based on the monitoring results and the preset judgment criteria (such as temperature threshold and action time), determine whether the thermal protection function of the device is normal. If the device can generate a circuit breaker action in time after reaching the preset temperature, it means that the thermal protection function is normal; if it fails to act in time or the temperature exceeds the safe range, it indicates that the thermal protection function may be abnormal.

[0093] Since the intermediate frequency coil 6 can evenly transfer heat to the component to be tested, the accuracy and reliability of the test can be improved. Secondly, by adjusting the heating power and heating speed, the test process can be precisely controlled to meet different test requirements. Finally, this method also has the advantages of high efficiency and environmental protection, because intermediate frequency induction heating does not require additional fuel or medium to generate heat, reducing energy consumption and emissions.

[0094] Based on the electromagnetic detection signal, move the end of the detection coil to the side of the protective action component of the device to be detected:

[0095] Reference Figure 5After receiving the electromagnetic detection signal, the end of the detection coil is moved to the side of the protection action component of the device to be detected. Here, the end of the detection coil is a coil that generates a directional magnetic field, which is the first coil 7. The first coil 7 activates the protection action component through the generated directional magnetic field. Ensure that the relative position and direction between the coil and the protection action component are correct so that the generated directional magnetic field can effectively act on the protection action component.

[0096] By passing DC or AC current into the coil, a directional magnetic field with a specific direction and strength is generated. This magnetic field should be sufficient to trigger the electromagnetic response of the protection action component, such as the closing or opening of the relay contact, the release of the electromagnetic lock, etc.

[0097] Under the action of the magnetic field, observe whether the protection action component produces an action as expected. This may include the closing and opening of contacts, the attraction and release of electromagnets, etc. Use sensors or monitoring equipment to record key parameters such as the action time and action strength of the protection action component. These parameters help to evaluate the response speed and reliability of the protection action component. According to the monitoring results and the preset judgment criteria, judge whether the action of the protection action component is normal. If the parameters such as action time and action strength meet the specified requirements and the action is stable and reliable, it indicates that the electromagnetic performance of the protection action component is good. If the action is abnormal, such as delayed action time, insufficient or unstable action strength, etc., it may indicate that the protection action component is faulty or has degraded performance, and further inspection and repair are required.

[0098] Move the end of the detection coil to the side of the protective action component of the device to be tested, and use the magnetic field it generates to trigger or detect the action of the protective action component. This avoids the risks and inconveniences that may be caused by direct operation of the protective action component; it can quickly and accurately complete the test task and improve the test efficiency; it will not cause damage or harm to the equipment and personnel during the test; and it can also adapt to the test needs of protective action components of different models and specifications.

[0099] Based on the electromagnetic detection signal, move the end of the detection coil to the protective action component surrounding the device to be detected:

[0100] Reference Figure 6, after receiving the electromagnetic detection signal, move the end of the detection coil to the protective action component surrounding the device to be detected to ensure that the magnetic field can fully cover and act on the protective action component. At the second place, the end of the detection coil is a coil that generates a directional magnetic field, which is the second coil 8; when the second coil 8 is energized, a magnetic field with a specific direction and intensity will be generated; the protective action component is activated by the generated directional magnetic field. The intensity and direction of the magnetic field are controlled by adjusting the current size and direction in the coil. When the magnetic field reaches a certain threshold, it will trigger the electromagnetic response of the protective action component, such as the closing or disconnection of the relay contacts, the release of the electromagnetic lock, etc. Among them, the middle part of the second coil 8 is a disconnectable connection point, which is convenient for the detection process, first disconnect, then surround the protective action component, and then connect, so as to realize the action of the protective action component surrounding the device to be detected.

[0101] The end of the detection coil should be designed to be able to completely or partially surround the protection action component to ensure that the electromagnetic field can act evenly on the entire component. When the end of the detection coil is energized, it will generate a strong electromagnetic field. The intensity and frequency of this electromagnetic field can be adjusted as needed to meet the testing requirements of different protection action components. Under the action of the electromagnetic field, the protection action component will be affected by magnetic force or electromagnetic induction, resulting in action. These actions may include attraction, release, jump, etc., depending on the type and purpose of the protection action component. By observing and analyzing these actions, performance indicators such as response speed, stability and reliability of the protection action component can be evaluated.

[0102] Among them, the coil for long-term magnetic field detection can also add a circle of insulation layer outside the wire.

[0103] There are three ways to detect the temperature of the protection action component as the component temperature:

[0104] The first method is to obtain the component temperature through an infrared sensor installed at the protective action component; the infrared sensor is installed at the appropriate position of the protective action component. The infrared sensor can measure the surface temperature of the component in a non-contact manner. There is no need to directly contact the component, which reduces the impact of the sensor installation on the operation of the component.

[0105] The second method is to obtain the component temperature through a temperature sensor installed at the protective action component; directly install a temperature sensor inside or on the surface of the protective action component, such as a thermocouple, thermistor or digital temperature sensor. It can directly measure the temperature inside the component and provide more accurate temperature information.

[0106] The third method: the first temperature is obtained by an infrared sensor installed at the protection action component, and the second temperature is obtained by a temperature sensor installed at the protection action component; the component temperature is calculated by weighted average of the first temperature and the second temperature. Combining the advantages of infrared sensors and temperature sensors, it can provide more comprehensive and accurate temperature information.

[0107] For scenarios that require rapid temperature measurement and do not require high accuracy, you can choose an infrared sensor; for scenarios that require high-precision temperature measurement and can contact the object being measured, you can choose a temperature sensor; and for scenarios that need to comprehensively consider multiple factors, you can choose the weighted method of infrared temperature measurement and temperature sensor.

[0108] The judgment method of whether the protection action component generates a circuit breaker action also includes the following three methods:

[0109] The first one is judging by sound:

[0110] Use microphones and other devices to collect sound wave data at the protection action parts;

[0111] The collected acoustic wave data is matched with a preset acoustic wave database, which should contain acoustic wave characteristics of the protection action component in different states (including circuit breaker action). If a specific acoustic wave characteristic is matched from the acoustic wave database, it is determined that the protection action component has generated a circuit breaker action.

[0112] The second method is to judge by image:

[0113] Use an infrared camera or a normal camera to collect infrared images or normal images of the protected action parts; analyze the collected images, especially focusing on the action areas.

[0114] Analyze the action area of ​​the infrared image or ordinary image, and match the action area of ​​the collected infrared image or ordinary image with the preset image library. The image library should contain the image features of the protection action component in different states. If a specific image feature is matched from the image library, it is determined that the protection action component has generated a circuit breaker action.

[0115] The third method is to make a comprehensive judgment based on sound and image:

[0116] Collect sound wave data and image data at the protection action parts.

[0117] The collected sound wave data is matched with the preset sound wave database. If a specific sound wave feature is matched from the sound wave database, it is recorded as the first result. The first result is presented in the form of a score, specifically the matching degree of the sound wave.

[0118] Analyze the action area of ​​the infrared image or ordinary image, match the action area of ​​the collected image data with the preset image library, and if a specific image feature is matched from the image library, it is recorded as the second result. The second result is also presented in the form of a score, specifically the degree of image matching.

[0119] A weighted result is obtained by weighted averaging the first result and the second result. If the weighted result is within a preset range, it is determined that the protection action component generates a circuit breaker action.

[0120] For example, the first result is assigned a score, such as 80 points, assuming that a higher score indicates a higher degree of match. The second result is assigned a score, such as 70 points, assuming that a higher score indicates a higher degree of match. Weighted average result = (80 × 0.5) + (70 × 0.5) = 75 points. If the set threshold is 74 points, then since 75 points is greater than 74 points, it can be determined that the protection action component has generated a circuit breaker action.

[0121] By acquiring the acoustic wave data and / or image data at the protection action component, and performing matching, analysis and weighting processing, it is possible to accurately determine whether it has generated a circuit breaker action. The third method combines the information of both acoustic waves and images to improve the accuracy and reliability of the judgment.

[0122] An embodiment of the present application further discloses a detection system for a line protection switch, including a processor, wherein the processor executes the steps of any one of the above-mentioned detection methods for a line protection switch.

[0123] An embodiment of the present application further discloses a storage medium, in which a program is stored. When the program is executed by a processor, the steps of the detection method of the line protection switch described in any one of the above are implemented.

[0124] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A detection method for a line protection switch, characterized in that: The steps include: Get the device number of the device to be detected; Matching a detection data packet corresponding to the device to be detected from a preset database according to the device number; Parsing a detection data packet, wherein the data contained in the detection data packet includes a detection type and action data, wherein the detection type includes thermal protection detection or electromagnetic protection detection, and the action data includes an action step for detecting the coil end; If the detection type is a thermal protection detection type, a thermal detection signal is issued; if the detection type is an electromagnetic protection detection, an electromagnetic detection signal is issued; Based on the heat detection signal, the end of the detection coil is moved to one side of the protection action component of the device to be detected or surrounds the protection action component of the device to be detected, and the protection action component is heated by the detection coil until the protection action component generates a circuit-breaking action; the temperature of the protection action component is detected as the component temperature, and if the component temperature is within a preset temperature range and the protection action component generates a circuit-breaking action, a prompt is issued that the device to be detected is normal; otherwise, a prompt is issued that the device to be detected is abnormal; Based on the electromagnetic detection signal, the end of the detection coil is moved to one side of the protection action component of the device to be detected, and a simulated magnetic field is applied to the protection action component through the detection coil. The duration during which the protection action component does not perform a protection action in the simulated magnetic field is recorded as the trigger time value. If the trigger time value is less than the preset reference time value, a prompt is issued that the device to be detected is normal; otherwise, a prompt is issued that the device to be detected is abnormal.

2. The detection method of the line protection switch according to claim 1, characterized in that: Based on the heat detection signal, the end of the detection coil is moved to the side of the protection action component of the device to be detected: The end of the detection coil is a self-heating coil (4), and the self-heating coil (4) heats the protective action component of the device to be detected through heat conduction; According to the rated power of the protection action component of the device to be detected, the output power of the self-heating coil (4) is positively correlated; the greater the rated power, the greater the output power; The smaller the rated power is, the smaller the output power is.

3. The detection method of the line protection switch according to claim 1, characterized in that: Based on the heat detection signal, the end of the detection coil is moved to the side of the protection action component of the device to be detected: The end of the detection coil is an electromagnetic cooker coil (5), and the electromagnetic cooker coil (5) heats the protective action component of the detection equipment by induction heating; According to the rated power of the protection action component of the device to be detected, the output power of the induction cooker coil (5) is positively correlated; the greater the rated power, the greater the output power; The smaller the rated power is, the smaller the output power is.

4. The detection method of the line protection switch according to claim 1, characterized in that: Based on the heat detection signal, the end of the detection coil is moved to a protective action component surrounding the device to be detected: The end of the detection coil is an intermediate frequency coil (6), and the intermediate frequency coil (6) surrounds the protection action component; The heating power of the intermediate frequency coil (6) is adjusted in a positive correlation according to the rated power of the protection action component of the device to be detected; the greater the rated power, the greater the heating power; the smaller the rated power, the smaller the heating power.

5. The detection method of the line protection switch according to any one of claims 2 to 4, characterized in that: Based on the electromagnetic detection signal, the end of the detection coil is moved to the side of the protective action component of the device to be detected: The end of the detection coil is a coil for generating a directional magnetic field, and the generated directional magnetic field causes the protective action component to be activated.

6. The detection method of a line protection switch according to any one of claims 2 to 4, characterized in that: Based on the electromagnetic detection signal, the end of the detection coil is moved to a protective action component surrounding the device to be detected: The end of the detection coil is a coil for generating a directional magnetic field, and the generated directional magnetic field causes the protective action component to be activated.

7. The detection method of the line protection switch according to claim 1, characterized in that: The step of detecting the temperature of the protection action component as the component temperature comprises: Obtaining the temperature of the component by means of an infrared sensor disposed at the protection action component; Alternatively, the temperature of the component is obtained by a temperature sensor disposed at the protection action component; Alternatively, the first temperature is obtained by an infrared sensor disposed at the protection action component, the second temperature is obtained by a temperature sensor disposed at the protection action component, and the component temperature is calculated by weighted averaging the first temperature and the second temperature.

8. The detection method of the line protection switch according to claim 7, characterized in that: The step of determining whether the protection action component generates a circuit-breaking action comprises: Collecting sound wave data at the protection action component; Matching the collected sound wave data with a preset sound wave database, and if a specific sound wave feature is matched from the sound wave database, it is determined that the protection action component generates a circuit breaker action; Alternatively, collecting an infrared image or a normal image of the protection action component; Analyze the action area of ​​the infrared image or the ordinary image, match the collected action area of ​​the infrared image or the ordinary image with a preset image library, and if a specific image feature is matched from the image library, determine that the protection action component generates a circuit breaker action; Alternatively, collecting sound wave data and image data at the protection action component; Matching the collected sound wave data with a preset sound wave database, if a specific sound wave feature is matched from the sound wave database, it is recorded as a first result; Analyze the motion area of ​​the infrared image or the ordinary image, match the motion area of ​​the collected image data with a preset image library, and if a specific image feature is matched from the image library, record it as a second result; A weighted result is obtained by weighted averaging the first result and the second result. If the weighted result is within a preset range, it is determined that the protection action component generates a circuit breaker action.

9. A detection system for a line protection switch, characterized in that: The method comprises a processor, wherein the processor executes the steps of the detection method of the line protection switch according to any one of claims 1 to 8.

10. A storage medium, characterized in that: The medium stores a program, and when the program is executed by a processor, the steps of the line protection switch detection method according to any one of claims 1 to 8 are implemented.

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