Resonance elimination device anti-seismic test method and system and terminal equipment

Abstract

The invention relates to an anti-seismic test method and system for a resonance elimination device and terminal equipment. The method comprises the following steps: determining the natural vibration frequency of the resonance elimination device based on a logarithm scanning method; inputting a simulation fault signal to the resonance elimination device, and in the process of inputting the simulation fault signal, performing a simulation earthquake test on the resonance elimination device based on a single-axis sine wave beat wave test method; acquiring test vibration change data of the resonance elimination device in the process of performing the simulated earthquake test and a signal waveform output by the resonance elimination device; and evaluating the anti-seismic performance of the resonance elimination device according to the natural vibration frequency, the test vibration change data and the signal waveform. According to the invention, the anti-seismic performance of the resonance elimination device can be tested, so that the microcomputer resonance elimination device used in a factory site is ensured to meet the use requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plant equipment detection, and in particular to a method and system for seismic testing of a detuning device and terminal equipment. Background Art

[0002] In nuclear power plants, safety-grade medium-voltage switchboards must be able to maintain power supply to equipment under accident conditions. Safety-grade medium-voltage switchboards are equipped with electromagnetic voltage transformers. Since the capacitance of medium-voltage cables to the ground is very easy to match the electromagnetic voltage transformers in the safety-grade medium-voltage switchboards, ferromagnetic resonance is generated under excitations such as ground faults. Therefore, it is necessary to add a microcomputer detuning device to the safety-grade medium-voltage switchboard to improve the safety of the safety-grade medium-voltage switchboard. Therefore, the performance stability of the microcomputer detuning device is particularly important. At present, nuclear power plants lack a systematic test plan for the seismic performance of the microcomputer detuning device. If the seismic performance of the microcomputer detuning device is poor, there is a risk of failure during an earthquake accident, affecting the safety of the nuclear power plant. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a method and system for seismic testing of a detuning device and a terminal device.

[0004] The technical solution adopted by the present invention to solve the technical problem is: constructing a seismic test method for a harmonic elimination device, comprising:

[0005] Determine the natural frequency of the detuning device based on the logarithmic scanning method;

[0006] Inputting a simulated fault signal to the detuning device, and in the process of inputting the simulated fault signal, performing a simulated earthquake test on the detuning device based on a uniaxial sinusoidal wave beat wave test method;

[0007] Acquiring test vibration change data of the detuning device during the simulated earthquake test and its output signal waveform;

[0008] The anti-seismic performance of the detuning device is evaluated based on the natural frequency, the test vibration change data and the signal waveform.

[0009] Preferably, the step of determining the natural frequency of the detuning device based on the logarithmic scanning method comprises:

[0010] Inputting a test vibration signal into the detuning device so that the detuning device operates in a vibration environment; wherein the detuning device is arranged on a vibration table capable of generating the test vibration signal;

[0011] Acceleration change data of the detuning device in a vibration environment is collected, and the natural frequency of the detuning device is determined according to the acceleration change data.

[0012] Preferably, the test vibration signal is a sinusoidal vibration signal with a peak value within a set acceleration range and a frequency that cyclically changes within a set frequency range and does not exceed a set octave.

[0013] Preferably, the set acceleration range is 1 to 2 m / s 2 ; and / or

[0014] The set frequency range is 1 to 50 Hz; and / or

[0015] The set octave is 2 octave.

[0016] Preferably, the step of inputting a simulated fault signal to the detuning device and performing a simulated earthquake test on the detuning device based on a uniaxial sinusoidal wave beat wave test method during the input of the simulated fault signal comprises:

[0017] S201, determining the parameters of the simulated fault signal according to the parameter setting combination not tested in the preset test table; wherein the preset test table includes several parameter setting combinations, and the parameters of the simulated fault signal include frequency, voltage, current and duration;

[0018] S202, after determining the parameters of the simulated fault signal each time, inputting the simulated fault signal to the detuning device;

[0019] S203, in the process of inputting the simulated fault signal, performing a first set number of operating benchmark earthquake tests and a second set number of safe shutdown earthquake tests on the three axes OX, OY and OZ of the detuning device based on a single-axis sinusoidal wave beat wave test method;

[0020] S204. After each relevant earthquake test is completed, determine whether there is a parameter setting combination for an unfinished test in the preset test table, and if so, return to S201.

[0021] Preferably, in step S202, the number of sinusoidal beat waves of the operation benchmark seismic test and the safety shutdown seismic test is 5, the time interval between each sinusoidal beat wave is not less than 2 seconds, and each sinusoidal beat wave includes at least 5 sinusoidal waves.

[0022] Preferably, the step of evaluating the seismic performance of the detuning device according to the natural frequency, the test vibration change data and the signal waveform comprises:

[0023] determining, according to the test vibration change data, whether the detuning device operates at the natural frequency during the operation reference earthquake test or the safety shutdown earthquake test, and if the detuning device operates at the natural frequency during the operation reference earthquake test or the safety shutdown earthquake test, determining that the seismic performance of the detuning device is unqualified;

[0024] Determine whether the detuning device has at least one of malfunction, refusal to operate or detuning node jitter during the operation benchmark seismic test or the safety shutdown seismic test based on the signal waveform; when the detuning device has at least one of malfunction, refusal to operate or detuning node jitter during the operation benchmark seismic test or the safety shutdown seismic test, determine that the seismic resistance performance of the detuning device is unqualified.

[0025] Preferably, before performing the simulated earthquake test, the method further comprises:

[0026] Acquiring appearance image data of the detuning device;

[0027] It is determined whether the detuning device has defects according to the appearance image data. If the detuning device has defects, it is determined that the anti-seismic performance of the detuning device is unqualified.

[0028] The present invention also constructs a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the above-mentioned method for seismic testing of a detuning device are implemented.

[0029] The present invention also constructs a seismic test system for a harmonic elimination device, comprising:

[0030] The terminal equipment mentioned above;

[0031] A vibration table, used to provide vibration signals for testing the detuning device;

[0032] A vibration collection unit, provided on the detuning device, for collecting vibration signals during the test of the detuning device;

[0033] A signal generator, used for inputting a simulated fault signal for testing into the detuning device;

[0034] A wave recording unit, used for collecting the signal waveform output by the detuning device during the simulated earthquake test; and

[0035] An action prompt unit is used to output an action prompt signal when the detuning device is in action.

[0036] The implementation of the present invention has the following beneficial effects: providing a method for seismic testing of a detuning device, capable of testing the seismic performance of a symmetrical detuning device, so as to ensure that the microcomputer detuning device used on site in the factory meets the use requirements and improve the safety of the nuclear power plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0038] Figure 1 is a flowchart of a method for testing the seismic resistance of a harmonic elimination device in some embodiments of the present invention;

[0039] Figure 2 is a schematic diagram of a sine wave beat wave in some embodiments of the present invention;

[0040] Figure 3 is a circuit structure block diagram of a control terminal in some embodiments of the present invention;

[0041] Figure 4 It is a schematic diagram of the structure of the seismic test system of the detuning device in some embodiments of the present invention. DETAILED DESCRIPTION

[0042] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0043] It should be noted that the flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor do they have to be executed in the order described. For example, some operations / steps can be decomposed, while some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0044] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0045] Figure 1 The flowchart of the seismic test method of the harmonic elimination device in some embodiments of the present invention is used to test the seismic performance of the microcomputer harmonic elimination device (hereinafter referred to as the harmonic elimination device) in the nuclear power plant to ensure that the microcomputer harmonic elimination device used on site meets the use requirements and improves the safety of the nuclear power plant. Figure 1 The method includes step S10, step S20, step S30 and step S40.

[0046] Step S10 includes: determining the self-oscillation frequency of the detuning device based on a logarithmic scanning method. The self-oscillation frequency is an inherent property of each device or system. If the external environment inputs a vibration signal with the same frequency as the self-oscillation frequency to the device or system, it is easy to cause resonance in the device or system, thereby causing damage to the device or system. This step determines the self-oscillation frequency of the detuning device by a logarithmic scanning method, with the purpose of providing a basis for judging whether the detuning device is operating at the self-oscillation frequency in the subsequent test process.

[0047] In some embodiments, the natural frequency of the detuning device may be determined by executing step S101 and step S102.

[0048] Step S101 includes: inputting a test vibration signal to the detuning device so that the detuning device operates in a vibration environment; wherein the detuning device is arranged on a vibration table capable of generating the test vibration signal. In this step, the test vibration signal is input to the detuning device so as to simulate the operation of the detuning device under an earthquake accident. In addition, the vibration table is an existing device in a nuclear power plant, which can output a vibration signal simulating an earthquake, and is often used to perform simulated earthquake tests on nuclear power devices.

[0049] Furthermore, in some embodiments, the test vibration signal may be a sinusoidal vibration signal with a peak value within a set acceleration range and a frequency that cyclically changes within a set frequency range and does not exceed a set octave.

[0050] In order to make the test vibration signal closer to the vibration signal generated during an earthquake accident, in some embodiments, the acceleration range can be set to 1 to 2 m / s 2 , the frequency range can be set to 1 to 50 Hz, and the octave can be set to 2 octaves. In this embodiment, the acceleration of the test vibration signal will be limited to 1 to 2 m / s 2 The frequency of the test vibration signal will gradually increase from 1Hz to 50Hz in 2 octaves, then gradually decrease from 50Hz to 1Hz in 2 octaves, and then gradually increase from 1Hz to 50Hz in 2 octaves again, and repeat this cycle many times until the natural frequency of the detuning device is determined.

[0051] Step S102 includes: collecting acceleration change data of the detuning device in a vibration environment, and determining the natural frequency of the detuning device according to the acceleration change data. In this step, an acceleration sensor can be set in the detuning device to collect acceleration change data of the detuning device in a vibration environment, wherein the acceleration change data includes acceleration values ​​corresponding to multiple frequencies of the detuning device in the vibration environment; then, the acceleration change data is analyzed, and the frequency value corresponding to the moment when the acceleration value with the largest absolute value appears is determined as the natural frequency of the detuning device. It should be noted that, since the acceleration value changes continuously in the form of fluctuations during the vibration process, the frequency at the moment corresponding to the acceleration value can be calculated by the existing technology.

[0052] Step S20 includes: inputting a simulated fault signal to the detuning device, and in the process of inputting the simulated fault signal, performing a simulated earthquake test on the detuning device based on a single-axis sinusoidal wave beat wave test method. In this step, the simulated fault signal can be input to the detuning device through an existing signal generator (such as a relay protection tester).

[0053] In some embodiments, a simulated earthquake test may be implemented by executing step S201 , step S202 , step S203 , and step S204 .

[0054] Step S201 includes: determining the parameters of the simulated fault signal according to the parameter setting combination that has not been tested in the preset test table; wherein the preset test table includes several parameter setting combinations, and the parameters of the simulated fault signal include frequency, voltage, current and duration. In this step, the purpose of outputting the simulated fault signal of multiple parameters is to make the simulated fault signal of at least one parameter close to or even equal to the detuning node of the detuning device (i.e., the resonant frequency that can start the detuning device) to provide the detuning device with an action condition. Of course, if the anti-seismic performance is not good, the detuning device may malfunction, refuse to operate, and detuning node jitter.

[0055] In some embodiments, the preset test table can be specifically referred to Table 1:

[0056]

[0057] Of course, due to the different application environment factors of the medium-voltage distribution board, the ferromagnetic resonance frequency, voltage and current generated by its grounding fault are also different. Then the tester can customize the frequency, voltage, current and duration of the simulated fault signal according to the actual situation.

[0058] Step S202 includes: after each determination of the parameters of the simulated fault signal, inputting the simulated fault signal to the detuning device. In this step, information can be exchanged with the signal generator, and relevant setting instructions can be sent to the signal generator based on a preset test table to set the parameters of the simulated fault signal output by the signal generator to multiple parameters.

[0059] Step S203 includes: in the process of inputting the simulated fault signal, performing a first set number of operating benchmark earthquake tests and a second set number of safe shutdown earthquake tests on the three axes OX, OY and OZ of the detuning device based on the single-axis sinusoidal wave beat wave test method.

[0060] Taking the example of performing a running benchmark earthquake test on the 0X axis of the detuning device, the specific test process may include: by inputting relevant vibration control instructions to the vibration table, the vibration table generates a plurality of sine beat waves composed of a plurality of sine waves on the 0X axis of the detuning device, and the time interval between each sine beat wave meets the set requirements, so as to test whether the performance of the detuning device in the corresponding vibration environment meets the relevant requirements. It can be understood that the process of performing the running benchmark earthquake test on the OY axis and the OZ axis of the detuning device is similar to the process performed on the 0X axis, the difference being that the direction of the vibration signal generated by the vibration table is different, so the above test process can be referred to. As for the difference between the safe shutdown earthquake test and the running benchmark earthquake test, the energy of the vibration signal generated by the vibration table during the two tests is different, and the vibration signal energy required for the safe shutdown earthquake test is usually more than twice the vibration signal energy required for the running benchmark earthquake test. Specifically, the vibration setting instruction can be input to the vibration table to control the vibration table to generate vibration signals of different amplitudes or accelerations, so as to implement the safe shutdown earthquake test or the running benchmark earthquake test.

[0061] In some embodiments, see Figure 2 , the number of sinusoidal beat waves for the operating benchmark earthquake test and the safety shutdown earthquake test can be 5. The time interval between each sinusoidal beat wave can be no less than 2 seconds to avoid the overlap of the two preceding and following sinusoidal beat waves. Each sinusoidal beat wave can include at least 5 sinusoidal waves, wherein the amplitude of the at least 5 sinusoidal waves increases first and then decreases over time, so that each sinusoidal beat wave as a whole shows a trend of increasing first and then decreasing, which is closer to the real earthquake wave, thus helping to improve the credibility of the test.

[0062] Since the vibration energy of the operating benchmark seismic test is relatively low, the test behavior causes relatively low loss to the detuning device, and the credibility of the test is improved. The first set number of times should be an appropriate number (the number should not be too small, which will result in low credibility of the test, and too large a number will cause unnecessary loss to the detuning device). Therefore, the first set number of times should preferably be 5 times.

[0063] Since the vibration energy of the safety shutdown earthquake test is relatively high, it may cause permanent damage to the detuning device, so the value of the second set number of times should not be too large, and is preferably 1 time.

[0064] Step S204 includes: after each completion of the relevant seismic test (including the operating benchmark seismic test and the safe shutdown seismic test), determining whether there is a parameter setting combination for which the test has not been completed in the preset test table, and if so, returning to step S201. Since step S30 is actually executed synchronously with step S20, when there is no parameter setting combination for which the test has not been completed in the preset test table, it means that all types of combinations in the preset test table have been tested, and therefore step S40 can be executed.

[0065] Step S30 includes: obtaining the test vibration change data of the detuning device during the simulated earthquake test and the signal waveform output by the detuning device. In this step, the test vibration change data can be collected by a vibration collection unit arranged on the detuning device, and the signal waveform output by the detuning device can be connected to the detuning circuit of the detuning device through a wave recording unit, so as to collect the signal waveform output by the detuning circuit of the detuning device. Further, by communicating with the vibration collection unit and the wave recording unit, the test vibration change data and signal waveform can be obtained. Among them, the vibration collection unit can be an existing acceleration detection device or module, then the test vibration change data corresponds to the acceleration change data of the detuning device during the earthquake test, and of course the vibration collection unit can also be replaced by an existing displacement detection device or module, as long as the displacement is converted into acceleration. The wave recording unit can be an existing oscilloscope or wave recorder, as long as it can collect and record the signal waveform output by the detuning device.

[0066] Step S40 includes: evaluating the seismic performance of the detuning device according to the natural frequency, the test vibration change data and the signal waveform.

[0067] In some embodiments, whether the seismic performance of the detuning device is qualified can be evaluated by executing step S401, step S402 and step S403.

[0068] Step S401 includes: determining whether the detuning device operates at the natural frequency during the operation benchmark earthquake test or the safety shutdown earthquake test based on the test vibration change data; if the detuning device operates at the natural frequency during the operation benchmark earthquake test or the safety shutdown earthquake test, determining that the seismic performance of the detuning device is unqualified.

[0069] Specifically, the vibration frequency at each moment in the test vibration change data (such as the frequency corresponding to the acceleration value at each moment) is first determined. If there is an error between a certain vibration frequency and the natural frequency within a first set range (such as ±5%), then it can be determined that the detuning device is operating at the natural frequency at a certain moment, and there is a risk of resonance, so the seismic performance of the detuning device is determined to be unqualified. Further, when determining the vibration frequency at each moment in the test vibration change data, the moment when the vibration frequency needs to be calculated can be determined based on a certain calculation frequency (such as 10Hz, that is, the moment of calculating the frequency increases by 0.1s, and the vibration frequency is calculated once each time it increases). The larger the frequency, the higher the judgment accuracy of this step, but the greater the amount of calculation of the processor, so the calculation frequency can be set according to actual needs.

[0070] Step S402 includes: determining, based on the signal waveform, whether the detuning device has at least one of malfunction, refusal to operate, or detuning node jitter during the operation benchmark seismic test or the safety shutdown seismic test; when the detuning device has at least one of malfunction, refusal to operate, or detuning node jitter during the operation benchmark seismic test or the safety shutdown seismic test, determining that the seismic performance of the detuning device is unqualified.

[0071] Specifically, when the detuning device is not in operation, the detuning circuit of the detuning device is not conducting, that is, there is no signal waveform output or the output signal waveform is "straight line", so whether the detuning device has at least one of malfunction, refusal to operate or detuning node jitter during the operation benchmark earthquake test or the safety shutdown earthquake test can be determined in the following way: analyzing the change of the signal waveform, if there is an obvious jump in the signal waveform (such as a rising edge), it means that the detuning device has been operated, if the detuning device is in operation, it is determined whether the frequency of the harmonic signal (recorded as the input harmonic signal) output by the signal generator at the time when the detuning device is in operation and the error of the preset detuning node of the detuning device are within the second set range; If the error between the frequency of the input harmonic signal and the preset detuning node is within the second setting range (such as ±3%) when the detuning device is operated, it is determined that the detuning device has not malfunctioned, refused to operate, or detuning node jitter occurs; if the error between the frequency of the input harmonic signal and the preset detuning node is not within the second setting range and within the third setting range (such as ±8%) when the detuning device is operated, it is determined that detuning node jitter occurs in the detuning device; if the error between the frequency of the input harmonic signal and the preset detuning node is not within the third setting range when the detuning device is operated, it is determined that the detuning device has malfunctioned; if there is no obvious jump in the signal waveform, it means that the detuning device has not operated, and therefore it can be determined that the detuning device has refused to operate.

[0072] It should be noted that in this step, when the detuning device has at least one of malfunction, refusal to operate or detuning node jitter during the operating benchmark seismic test, the seismic performance of the detuning device will be judged as unqualified; when the detuning device has at least one of malfunction, refusal to operate or detuning node jitter during the safe shutdown seismic test, the seismic performance of the detuning device will also be judged as unqualified.

[0073] Step S402 includes: when the detuning device does not operate at the natural frequency during the operation benchmark seismic test or the safety shutdown seismic test, and the detuning device does not have at least one of malfunction, refusal to operate or detuning node jitter during the operation benchmark seismic test or the safety shutdown seismic test, it is determined that the seismic performance of the detuning device is qualified.

[0074] Since the number of times the operation benchmark earthquake test or the safety shutdown earthquake test is performed on each axis may be multiple times, in order to further improve the reliability of the test, in some embodiments, the following steps can also be performed to evaluate whether the seismic performance of the detuning device is qualified: determine whether the number of times the detuning device is actuated is less than 1 time in each operation benchmark earthquake test or safety shutdown earthquake test according to the test vibration change data and the signal waveform. If the number of times the detuning device is actuated is less than 1 time, the seismic performance of the detuning device is determined to be unqualified. In this embodiment, as long as the detuning device does not act in a certain operation benchmark earthquake test or safety shutdown earthquake test, the seismic performance of the detuning device will be determined to be unqualified.

[0075] In some embodiments, step S01 and step S02 may be further included before performing the seismic test.

[0076] Step S01 includes: acquiring appearance image data of the detuning device. Specifically, the appearance image data of the detuning device can be acquired by a camera.

[0077] Step S02 includes: determining whether the detuning device has defects according to the appearance image data, and if the detuning device has defects, determining that the anti-seismic performance of the detuning device is unqualified. In this embodiment, the appearance image data can be compared with the standard image data to confirm whether the appearance of the detuning device has defects. Further, the comparison of the appearance image data with the standard image data can be achieved by an existing AI module, a trained model (such as a neural network model) or by manual comparison.

[0078] Furthermore, the items for comparing the appearance image data with the standard image data may include at least one of the following:

[0079] (1) Check whether the housing of the detuning device is loose, damaged or deformed, and whether the wiring terminals are damaged or deformed. If the housing is loose, damaged or deformed, or the wiring terminals are damaged or deformed, it is determined that the detuning device is defective;

[0080] (2) Check whether the markings on the terminals, operating buttons and signal indicators of the detuning device are clear and correct. If the markings on the terminals, operating buttons or signal indicators are unclear or incorrect, it is determined that the detuning device is defective;

[0081] (3) Check whether the components of the detuning device are clean and free of foreign matter, and whether the relevant components (such as grounding terminals, metal housings, etc.) are firmly grounded. If the components are not clean or contain foreign matter, or the relevant components are not firmly grounded, it is determined that the detuning device has defects;

[0082] (4) After disassembling the shell of the detuning device, check whether the wiring and welding of each component inside the detuning device are normal. If the wiring or welding of the component is abnormal, it is determined that the detuning device has defects;

[0083] (5) Check whether the screen display information of the detuning device is normal after it is powered on, and whether there is a distorted screen or a black screen. If the screen display information is abnormal, there is a distorted screen or a black screen, it is determined that the detuning device is defective.

[0084] In this embodiment, when it is detected that the detuning device has defects, in order to improve the test efficiency, the test steps S10 to S40 on the detuning device may be stopped.

[0085] like Figure 3 As shown, the present invention also provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the anti-seismic test method for the detuning device provided in an embodiment of the present invention are implemented.

[0086] like Figure 4 As shown, the present invention also provides a detuning device seismic test system, including a vibration table 2, a vibration collection unit 3, a signal generator 4, a recording unit 5, an action prompt unit 6 and a terminal device 1 provided in an embodiment of the present invention.

[0087] The vibration table 2 is used to provide a vibration signal for testing to the detuning device 10. The vibration table can be an existing device that has been configured in a nuclear power plant and simulates earthquake testing, and will not be described in detail here.

[0088] The vibration collection unit 3 may be disposed on the detuning device 10 to vibrate along with the detuning device 10 during the test, thereby collecting vibration signals during the test of the detuning device 10. The vibration collection unit may be an existing acceleration detection device or module.

[0089] The signal generator 4 is used to input a simulated fault signal for testing to the detuning device 10. The signal generator 4 can be an existing relay protection tester that can input a simulated fault signal to the detuning device, and is not limited here.

[0090] The recording unit 5 is used to collect the signal waveform output by the detuning device 10 during the simulated earthquake test. The recording unit can be an existing oscilloscope or recorder, as long as it can collect and record the signal waveform output by the detuning device, and is not limited here.

[0091] The action prompt unit 6 is connected to the detuning circuit of the detuning device 10 to output an action prompt signal when the detuning device 10 is in operation. Specifically, the action prompt unit 6 may include a light bulb. When the detuning device 10 is in operation, the switching switch in the detuning device 10 is closed, the detuning circuit is turned on, and the action prompt unit 6 is lit. Therefore, the test personnel can observe whether the detuning device 10 is in operation by observing whether the action prompt unit 6 is lit. Of course, by observing the waveform display of the signal by the recording unit 5, it is also possible to analyze whether the detuning device 10 is in operation, but a series of analysis work is required, which is not convenient enough. By using the action prompt unit 6, not only can it be observed intuitively and conveniently whether the detuning device 10 is in operation, but also the contact of the switching switch can be observed by mistake due to vibration during the test. The action prompt unit 6 can improve the monitoring effect of whether the detuning device 10 is in operation.

[0092] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0093] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0094] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0095] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A method for seismic testing of a detuning device, characterized in that: include: Determine the natural frequency of the detuning device based on the logarithmic scanning method; Inputting a simulated fault signal to the detuning device, and in the process of inputting the simulated fault signal, performing a simulated earthquake test on the detuning device based on a uniaxial sinusoidal wave beat wave test method; Acquiring test vibration change data of the detuning device during the simulated earthquake test and its output signal waveform; The anti-seismic performance of the detuning device is evaluated based on the natural frequency, the test vibration change data and the signal waveform.

2. The method for seismic testing of a harmonic elimination device according to claim 1, characterized in that: The step of determining the natural frequency of the detuning device based on the logarithmic scanning method comprises: Inputting a test vibration signal into the detuning device so that the detuning device operates in a vibration environment; wherein the detuning device is arranged on a vibration table capable of generating the test vibration signal; Acceleration change data of the detuning device in a vibration environment is collected, and the natural frequency of the detuning device is determined according to the acceleration change data.

3. The method for seismic testing of a harmonic elimination device according to claim 2, characterized in that: The test vibration signal is a sinusoidal vibration signal with a peak value within a set acceleration range and a frequency that changes cyclically within a set frequency range and does not exceed a set octave.

4. The method for seismic testing of a harmonic elimination device according to claim 3, characterized in that: The set acceleration range is 1 to 2 m / s 2 ; and / or The set frequency range is 1 to 50 Hz; and / or The set octave is 2 octave.

5. The method for seismic testing of a harmonic elimination device according to claim 1, characterized in that: The step of inputting a simulated fault signal to the detuning device and performing a simulated earthquake test on the detuning device based on a uniaxial sinusoidal wave beat wave test method during the process of inputting the simulated fault signal comprises: S201, determining the parameters of the simulated fault signal according to the parameter setting combination not tested in the preset test table; wherein the preset test table includes several parameter setting combinations, and the parameters of the simulated fault signal include frequency, voltage, current and duration; S202, after determining the parameters of the simulated fault signal each time, inputting the simulated fault signal to the detuning device; S203, in the process of inputting the simulated fault signal, performing a first set number of operating benchmark earthquake tests and a second set number of safe shutdown earthquake tests on the three axes OX, OY and OZ of the detuning device based on a single-axis sinusoidal wave beat wave test method; S204. After each relevant earthquake test is completed, determine whether there is a parameter setting combination for an unfinished test in the preset test table, and if so, return to S201.

6. The method for seismic testing of a harmonic elimination device according to claim 5, characterized in that: In the step S202, the number of sinusoidal beat waves of the operation benchmark earthquake test and the safety shutdown earthquake test is 5, the time interval between each sinusoidal beat wave is not less than 2 seconds, and each sinusoidal beat wave includes at least 5 sinusoidal waves.

7. The method for seismic testing of a harmonic elimination device according to claim 5, characterized in that: The step of evaluating the seismic performance of the detuning device according to the natural frequency, the test vibration change data and the signal waveform comprises: determining, according to the test vibration change data, whether the detuning device operates at the natural frequency during the operation reference earthquake test or the safety shutdown earthquake test, and if the detuning device operates at the natural frequency during the operation reference earthquake test or the safety shutdown earthquake test, determining that the seismic performance of the detuning device is unqualified; Determine whether the detuning device has at least one of malfunction, refusal to operate or detuning node jitter during the operation benchmark seismic test or the safety shutdown seismic test based on the signal waveform; when the detuning device has at least one of malfunction, refusal to operate or detuning node jitter during the operation benchmark seismic test or the safety shutdown seismic test, determine that the seismic resistance performance of the detuning device is unqualified.

8. The method for seismic testing of a harmonic elimination device according to any one of claims 1 to 7, characterized in that: Before conducting the simulated earthquake test, the method further includes: Acquiring appearance image data of the detuning device; It is determined whether the detuning device has defects according to the appearance image data. If the detuning device has defects, it is determined that the anti-seismic performance of the detuning device is unqualified.

9. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the anti-seismic test method for the harmonic elimination device according to any one of claims 1 to 8 are implemented.

10. A seismic test system for a detuning device, characterized in that: include: The terminal device (1) as claimed in claim 9; A vibration table (2) for providing a vibration signal for testing to the detuning device (10); A vibration collection unit (3) is provided on the detuning device (10) and is used to collect vibration signals during a test of the detuning device (10); A signal generator (4) is used to input a simulated fault signal for testing into the detuning device (10); A wave recording unit (5) is used to collect the signal waveform output by the detuning device (10) during the simulated earthquake test; as well as An action prompt unit (6) is used to output an action prompt signal when the detuning device (10) is in action.

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