Acceleration test method, device and equipment after field transformation of power grid equipment and medium

Abstract

The embodiment of the invention discloses an acceleration test method for power grid equipment after on-site reconstruction, and the method comprises the steps: carrying out the in-situ dynamic test of the equipment through employing an acceleration sensor before and after carrying out the seismic mitigation and isolation measure installation of the equipment, monitoring the fundamental frequency change of the equipment, and carrying out the in-situ dynamic test of the equipment; the characteristics of the equipment are changed after the seismic mitigation and isolation measures are added; arranging an IBIS-FS system in the side direction of the equipment, and carrying out in-plane vibration measurement to obtain in-plane vibration measurement data; the IBIS-FS system is arranged in the transverse direction of the equipment, out-of-plane vibration measurement is carried out, out-of-plane vibration measurement data are obtained, comprehensive acceleration testing and displacement after transformation can be carried out on the transformation condition of seismic reinforcement of the electrical equipment more rapidly and accurately, and therefore feedback of the transformation effect can be obtained in real time, and the improvement effect of the electrical equipment is improved. Safety risks and extra cost possibly caused by equipment movement are avoided, and the test period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of acceleration testing, and in particular to an acceleration testing method for power grid equipment after on-site transformation. Background Art

[0002] In the field of seismic reinforcement of electrical equipment, traditional assessment methods face challenges in efficiency and real-time performance. With the increasing requirements for safety and stability of power facilities, seismic reinforcement and modification of electrical equipment has become a key measure to ensure its stable operation in natural disasters such as earthquakes.

[0003] However, traditional verification methods, such as building sophisticated physical models or conducting complex simulation tests, can provide a certain degree of accuracy, but the entire process is time-consuming and it is difficult to quickly feedback the actual reinforcement effects of different electrical equipment. This not only delays the optimization and iteration of reinforcement plans, but also limits the ability to respond quickly and adjust flexibly. Therefore, exploring more efficient and real-time evaluation methods has become an important issue to improve the efficiency and quality of seismic reinforcement of electrical equipment. Summary of the invention

[0004] The main purpose of the present invention is to provide an acceleration testing method for power grid equipment after on-site modification, which can quickly and accurately perform comprehensive acceleration testing and displacement testing after modification of seismic reinforcement of electrical equipment, and instantly obtain feedback on the modification effect.

[0005] To achieve the above object, the present application provides a method for testing acceleration of power grid equipment after on-site modification, the method comprising:

[0006] Before and after the seismic isolation measures are installed on the equipment, an acceleration sensor is used to perform in-situ dynamic testing on the equipment to monitor the fundamental frequency changes of the equipment and the changes in the characteristics of the equipment itself after the seismic isolation measures are installed;

[0007] Arrange the IBIS-FS system at the side of the device to perform in-plane vibration measurement and obtain in-plane vibration measurement data;

[0008] The IBIS-FS system is arranged in the lateral direction of the device to perform out-of-plane vibration measurement to obtain out-of-plane vibration measurement data.

[0009] Optionally, before and after the seismic isolation measures are installed on the equipment, an acceleration sensor is used to perform an in-situ dynamic test on the equipment, including:

[0010] Before and after the damper is installed on the electrical equipment, an acceleration sensor is used to perform an in-situ dynamic test on the electrical equipment;

[0011] Before and after the inertia container is installed on the circuit breaker device, an acceleration sensor is used to perform an in-situ dynamic test on the circuit breaker device.

[0012] Optionally, the device is a lightning arrester;

[0013] The acceleration sensor is arranged at the bottom flange of the arrester and the middle of the concrete column;

[0014] Before and after the seismic isolation measures are installed on the equipment, an acceleration sensor is used to perform an in-situ dynamic test on the equipment to monitor the fundamental frequency change of the equipment and the change of the characteristics of the equipment itself after the seismic isolation measures are installed, including:

[0015] Before and after the lightning arrester is installed with a seismic isolation support, an impact load is applied at different positions to measure the acceleration response time history curve of the overall structure after the impact load;

[0016] Performing Fourier transformation of the acceleration response time history curve to obtain the fundamental frequency change of the arrester before and after the isolation support is installed.

[0017] Optionally, the method further includes:

[0018] The fundamental frequency change of the equipment and the acceleration response time history curve are analyzed to generate a test result of the equipment reinforcement effect.

[0019] Optionally, the step of arranging the IBIS-FS system at the side of the device to perform in-plane vibration measurement and obtain in-plane vibration measurement data includes:

[0020] Arrange the IBIS-FS system on the side of the circuit breaker device;

[0021] The IBIS-FS system is used to perform measurements in the left and right directions based on the position of the knocking excitation, and the first number of measurements are performed in each direction. A single knock of the second number is performed for each measurement, and the time for each measurement is the first preset duration.

[0022] Optionally, the step of arranging the IBIS-FS system in a lateral direction of the device to perform out-of-plane vibration measurement and obtain out-of-plane vibration measurement data includes:

[0023] Arrange the IBIS-FS system in the transverse direction of the circuit breaker device;

[0024] The IBIS-FS system is used to perform measurements in the left and right directions based on the position of the knocking excitation, and the third number of measurements are performed in each direction. A fourth number of single knocks are performed for each measurement, and the duration of each measurement is the second preset time length.

[0025] Optionally, the method further includes:

[0026] When performing the in-plane vibration measurement and / or the out-of-plane vibration measurement, an accelerometer is used to calibrate and compensate for vibrations generated by passing vehicles.

[0027] On the other hand, the present application also provides an acceleration test device for power grid equipment after field modification, comprising:

[0028] The first test module is used to perform in-situ dynamic testing on the equipment using an acceleration sensor before and after the seismic isolation measures are installed, to monitor the fundamental frequency change of the equipment, and the change of the characteristics of the equipment itself after the seismic isolation measures are installed;

[0029] The second test module is used to arrange the IBIS-FS system to the side of the device to perform in-plane vibration measurement and obtain in-plane vibration measurement data;

[0030] The third test module is used to arrange the IBIS-FS system in the lateral direction of the device to perform out-of-plane vibration measurement and obtain out-of-plane vibration measurement data.

[0031] On the other hand, the present application provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the first aspect and any possible implementation method thereof.

[0032] On the other hand, the present application provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the processor executes each step of the method described in the first aspect.

[0033] The present application provides an acceleration test method for power grid equipment after on-site modification, by using an acceleration sensor to perform in-situ dynamic testing on the equipment before and after the installation of seismic isolation measures, monitoring the change in the fundamental frequency of the equipment and the change in the characteristics of the equipment after the installation of seismic isolation measures; arranging the IBIS-FS system to the lateral side of the equipment, performing in-plane vibration measurement, and obtaining in-plane vibration measurement data; arranging the IBIS-FS system to the lateral side of the equipment, performing out-of-plane vibration measurement, and obtaining out-of-plane vibration measurement data, which can more quickly and accurately perform comprehensive acceleration testing and displacement after modification of the equipment, thereby being able to obtain immediate feedback on the modification effect, avoiding safety risks and additional costs that may be caused by equipment movement, shortening the test cycle, thereby accelerating the optimization and adjustment process, and ensuring the quality and efficiency of electrical equipment modification work. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] in:

[0036] Figure 1 A schematic flow chart of an acceleration testing method for power grid equipment after field modification provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of an acceleration response time history curve of a seismic isolation front lightning arrester provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of an acceleration response time history curve of a post-isolation lightning arrester provided in an embodiment of the present application;

[0039] Figure 4 A schematic diagram of a spectral acceleration curve of a pre-isolation lightning arrester provided in an embodiment of the present application;

[0040] Figure 5 A schematic diagram of a spectral acceleration curve of a post-isolation lightning arrester provided in an embodiment of the present application;

[0041] Figure 6 A schematic diagram of geometric relationship of IBIS-FS system measurement provided in an embodiment of the present application;

[0042] Fig. 7A A schematic diagram of an IBIS-FS system in-plane vibration measurement arrangement provided in an embodiment of the present application;

[0043] Figure 7B A schematic diagram of the arrangement position of in-plane vibration measurement of an IBIS-FS system provided in an embodiment of the present application;

[0044] Figure 8 A schematic diagram of excitation positions for in-plane vibration measurement of an IBIS-FS system provided in an embodiment of the present application;

[0045] Fig. 9 A schematic diagram of an out-of-plane vibration measurement arrangement of an IBIS-FS system provided in an embodiment of the present application;

[0046] Fig.10 A schematic diagram of an out-of-plane vibration measurement excitation position of an IBIS-FS system provided in an embodiment of the present application;

[0047] Fig.11A schematic structural diagram of an acceleration testing device after on-site modification of power grid equipment provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0049] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0050] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0051] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0052] See also Figure 1 , is a flow chart of an acceleration test method after field modification of power grid equipment provided in an embodiment of the present application. Figure 1 As shown, the method includes:

[0053] 101. Before and after the installation of seismic isolation measures, use acceleration sensors to conduct in-situ dynamic tests on the above equipment to monitor the changes in the fundamental frequency of the above equipment and the changes in the characteristics of the above equipment after the installation of seismic isolation measures;

[0054] 102. Arrange the IBIS-FS system at the side of the above-mentioned equipment to perform in-plane vibration measurement and obtain in-plane vibration measurement data;

[0055] 103. Arrange the IBIS-FS system in the lateral direction of the device to perform out-of-plane vibration measurement to obtain out-of-plane vibration measurement data.

[0056] The device in the embodiment of the present application may be a power grid device, or an electrical device (electrical power device). The method steps in the embodiment of the present application mainly include two aspects: an acceleration sensor measurement scheme and a displacement test after transformation.

[0057] A variety of electrical equipment can be modified on site, such as installing seismic isolation measures on multiple porcelain column type equipment such as substation circuit breakers, current transformers, lightning arresters and capacitors. Then start the acceleration test and displacement test after the modification.

[0058] 1. Acceleration sensor measurement solution

[0059] For the above acceleration test, acceleration sensors can be used for measurement. Before and after the installation of seismic isolation measures, in-situ dynamic tests can be performed on the equipment to monitor changes in the overall fundamental frequency of the equipment, as well as changes in the equipment's own characteristics after the seismic isolation device is installed.

[0060] In an optional implementation, before and after the seismic isolation measures are installed on the equipment, an acceleration sensor is used to perform an in-situ dynamic test on the equipment, including:

[0061] Before and after the damper is installed on the electrical equipment, an acceleration sensor is used to perform in-situ dynamic testing on the electrical equipment;

[0062] Before and after the inertia container is installed on the circuit breaker equipment, an acceleration sensor is used to perform in-situ dynamic testing on the above circuit breaker equipment.

[0063] The acceleration sensor mentioned in the embodiments of the present application is a sensor that can sense acceleration and convert it into a usable output signal.

[0064] In-situ dynamic testing is a field testing method used in geotechnical engineering surveys, which can accurately test and evaluate the properties of soil without destroying the original structure of the soil. The in-situ dynamic testing mentioned in the embodiments of the present application can be used to evaluate the seismic performance of power equipment, and to test the stability and durability of power equipment by simulating vibrations under extreme conditions such as earthquakes.

[0065] For electrical equipment, in-situ dynamic characteristic tests can be carried out before and after the damper is installed. For circuit breaker equipment, in-situ dynamic characteristic tests can be carried out before and after the inertia container is installed.

[0066] In an optional embodiment, the above-mentioned device is a lightning arrester;

[0067] The acceleration sensor is arranged at the bottom flange of the arrester and the middle of the concrete column;

[0068] Before and after the seismic isolation measures are installed on the equipment, an acceleration sensor is used to perform in-situ dynamic testing on the equipment to monitor the fundamental frequency changes of the equipment and the changes in the characteristics of the equipment itself after the seismic isolation measures are installed, including:

[0069] Before and after the isolation support is installed on the above-mentioned arrester, the acceleration response time history curve of the overall structure after the impact load is measured by applying the impact load at different positions;

[0070] The acceleration response time history curve is subjected to Fourier transformation of acceleration to obtain the fundamental frequency change of the arrester before and after the isolation support is installed.

[0071] In an optional implementation, the above method further includes:

[0072] The fundamental frequency change of the above equipment and the acceleration response time history curve are analyzed to generate the test results of the reinforcement effect of the above equipment.

[0073] In the embodiment of the present application, the acceleration response time history curve of the overall structure after the impact load can be measured by the hammer method, and Fourier transform and other processing can be performed to obtain the fundamental frequency change of the equipment before and after the installation of seismic isolation measures. Furthermore, the obtained curves and data can be analyzed to obtain the test results of the equipment reinforcement effect and evaluate the seismic isolation effect. Among them, the data analysis method can be selected as needed, for example, preset rules or models can be used for analysis and processing, and the embodiment of the present application does not limit this.

[0074] Specifically, taking the in-situ dynamic test of the arrester as an example, the hammer method can be used to perform in-situ dynamic tests on the arrester before and after the installation of the wire rope isolation support. Before the test, acceleration sensors can be arranged at the bottom flange of the arrester and the middle of the concrete column. By applying impact loads at different positions, the free attenuation process of the overall structure after the impact load is measured, and the natural frequency is obtained by processing the natural vibration attenuation section.

[0075] Figure 2 This is a schematic diagram of the acceleration response time history curve of a pre-isolation lightning arrester provided in an embodiment of the present application. Figure 2 As shown in the figure, the free attenuation time history of the device within 5 seconds under a single impact load is shown. Figure 2 It can be seen that the equipment meets the law of free vibration during the attenuation process, and the acceleration value gradually decays to 0.01m / s 2 within the range of Figure 2The mid-terminal acceleration response has a small fluctuation due to the interference of the link, which will not affect the measurement accuracy and the fundamental frequency of the structure in the signal analysis.

[0076] Figure 3 This is a schematic diagram of the acceleration response time history curve of a post-isolation lightning arrester provided in an embodiment of the present application. Figure 3 As shown in the figure, it means that the peak acceleration of the structure after seismic isolation is quickly reduced to 0.01m / s under the action of a single impact load. 2 As shown below, the reduction in the acceleration response of the seismic isolation device to the impact load is obvious.

[0077] Furthermore, the acceleration response time history curve before and after the seismic isolation can be subjected to Fourier transformation of acceleration, and the change of the fundamental frequency of the arrester structure before and after the seismic isolation support is installed can be obtained.

[0078] Spectral acceleration curve is an important concept in earthquake engineering. It describes that under a given earthquake input, structures with different natural periods will have different vibration acceleration responses. The time history curves of these responses are vibration curves composed of multiple frequency components, which are called earthquake response spectra.

[0079] Figure 4 A schematic diagram of a spectral acceleration curve of a pre-isolation lightning arrester provided in an embodiment of the present application.

[0080] Figure 5 A schematic diagram of a spectral acceleration curve of a post-isolation lightning arrester provided in an embodiment of the present application.

[0081] like Figure 4 and Figure 5 As shown in the figure, the fundamental frequency of the structure before isolation is 6.83Hz, and the fundamental frequency of the structure is reduced to 3.91Hz after the isolator is installed. It can be seen that the isolation device reduces the natural fundamental frequency of the structure and reduces the stiffness of the isolation. From the acceleration response time history, the acceleration response of the structure under the impact load is significantly reduced.

[0082] In an optional implementation, based on the test data, the step of analyzing the seismic isolation effect of the seismic isolation device may include:

[0083] 1. Analyze the impact of seismic isolation devices:

[0084] For multi-particle isolation structures, the acceleration response spectrum curve established by the equivalent linearization method based on the design response spectrum of different specifications is basically consistent with the result obtained by the time history analysis method, and the displacement of the isolation layer is relatively close. This shows that the seismic isolation device can effectively reduce the response of the structure.

[0085] 2. Compare the spectrum curves with and without seismic isolation devices:

[0086] By comparing the acceleration response spectrum curves with and without the seismic isolation device, the effect of the seismic isolation device can be intuitively seen. For example, if the seismic isolation device reduces the peak acceleration of the structure, it means that the seismic isolation device has achieved the expected effect.

[0087] 3. Consider the influence of damping ratio:

[0088] The velocity spectrum curves with different damping ratios may have obvious intersections, and as the acceleration response spectrum increases with the overall period, the spectrum values ​​of some period points suddenly decrease, forming peaks and troughs of the spectrum curve. These phenomena need to be considered when analyzing the seismic isolation effect.

[0089] 4. Seismic response analysis of long-period seismic isolation structures:

[0090] For long-period isolation structures, a correction formula for the acceleration design response spectrum long-period attenuation curve without segmentation is proposed. The equivalent linearization and time-history calculation analysis of multi-particle isolation structures are compared according to the correction formula. The results show that the inter-layer shear coefficient and base displacement obtained by the correction long-period segment response spectrum calculation are consistent with the results of the time-history analysis.

[0091] 5. Using virtual ground acceleration excitation:

[0092] By constructing virtual ground acceleration excitation using known autospectra, the steady-state solution of structural displacement and absolute acceleration response can be obtained, and then the effect of seismic isolation device can be analyzed.

[0093] 6. Ratio of deformation energy consumed by structure and isolation layer:

[0094] By using the deformation energy ratio consumed by the structure and the isolation layer, the modal damping is obtained by weighted averaging the damping of each part, which can more accurately evaluate the seismic isolation effect of the seismic isolation device.

[0095] 2. Displacement test plan after transformation

[0096] The IBIS-FS displacement measurement solution is mainly adopted in the embodiments of the present application.

[0097] IBIS-FS is a non-contact measurement sensor that can realize remote displacement measurement and provides a method for measuring the displacement (radial displacement) along the radar line of sight of all range bins of the antenna beam illumination structure. In the embodiment of the present application, it is used for displacement testing after equipment modification, and is suitable for monitoring small displacement changes, and can provide continuous data collection under various environmental conditions without the need for mobile equipment.

[0098] The IBIS-FS must be arranged in the direction facing the structural excitation. If the actual displacement occurs in another direction, the detected displacement must be projected based on geometric considerations. The geometric relationship is as follows: Figure 6 shown.

[0099] The in-plane vibration measurement mentioned in the embodiments of the present application refers to measuring the vibration of an object in a certain plane (usually the plane where the surface of the object is located). This measurement usually focuses on the displacement change of the surface or structure of the object in the plane.

[0100] The out-of-plane vibration measurement mentioned in the embodiments of the present application refers to measuring the vibration of an object perpendicular to a plane (usually the plane where the surface of the object is located). This measurement focuses on the vertical displacement change of the surface of the object and is suitable for situations where the vibration of the object perpendicular to the surface needs to be measured.

[0101] (1) In-plane vibration measurement

[0102] In an optional implementation, the IBIS-FS system is arranged at the side of the device to perform in-plane vibration measurement to obtain in-plane vibration measurement data, including:

[0103] Arrange the above-mentioned IBIS-FS system on the side of the circuit breaker equipment;

[0104] The above-mentioned IBIS-FS system is used to perform measurements in the left and right directions based on the position of the knocking excitation, and the first number of measurements are performed in each direction. A single knock of the second number is performed for each measurement, and the time of each measurement is the first preset duration.

[0105] Fig. 7A A schematic diagram of an in-plane vibration measurement arrangement of an IBIS-FS system provided in an embodiment of the present application.

[0106] Figure 7B A schematic diagram of the in-plane vibration measurement arrangement of an IBIS-FS system provided in an embodiment of the present application.

[0107] Taking the circuit breaker as an example, the IBIS-FS system is arranged on the side of the circuit breaker, and its position and direction are shown in Figure 7. Its specific arrangement position and approximate selection point position are as follows Figure 8 As shown, it needs to be adjusted according to the on-site conditions.

[0108] Figure 8 A schematic diagram of the excitation positions for in-plane vibration measurement of an IBIS-FS system provided in an embodiment of the present application.

[0109] Among them, the first number, the second number and the first preset time length can be set as needed.

[0110] For example, based on the aforementioned circuit breaker equipment measurement settings, measurements can be performed in both left and right directions, five times in each direction, five single taps for each measurement, and 5 minutes for each measurement. Keep records when performing tapping excitation, and make sure that the circuit breaker can vibrate within a certain range when tapping.

[0111] (2) Out-of-plane vibration measurement

[0112] In an optional implementation, the IBIS-FS system is arranged in a lateral direction of the device to perform out-of-plane vibration measurement to obtain out-of-plane vibration measurement data, including:

[0113] Arrange the above IBIS-FS system in the horizontal direction of the circuit breaker equipment;

[0114] The above-mentioned IBIS-FS system is used to perform measurements in the left and right directions based on the position of the knocking excitation, and the third number of measurements are performed in each direction. A fourth number of single knocks are performed for each measurement, and the time for each measurement is the second preset time length.

[0115] Fig. 9 A schematic diagram of an out-of-plane vibration measurement arrangement of an IBIS-FS system provided in an embodiment of the present application.

[0116] Fig.10 A schematic diagram of the excitation position for out-of-plane vibration measurement of an IBIS-FS system provided in an embodiment of the present application.

[0117] Specifically, still taking the circuit breaker equipment as an example, the IBIS-FS system is arranged in the horizontal direction of the circuit breaker. Fig. 9 Its specific layout and approximate location are shown in Fig.10 As shown, it can be adjusted according to on-site conditions.

[0118] Among them, the third number, the fourth number and the second preset time length can be set as needed.

[0119] For example, measurements can be performed in both forward and reverse directions, five times in each direction, five single taps for each measurement, and each measurement lasts 5 minutes. Records should be kept during the tapping excitation to ensure that the circuit breaker can vibrate within a certain range during the tapping.

[0120] In an optional implementation, the above method further includes:

[0121] When performing the above-mentioned in-plane vibration measurement and / or the above-mentioned out-of-plane vibration measurement, an accelerometer is used to correct and compensate for the vibration generated by a passing vehicle.

[0122] Specifically, considering that power equipment may operate under various environmental conditions, the accuracy of the test can be improved by adding an environmental adaptability module. For example, an accelerometer can be used to correct and compensate for the vibration generated by passing vehicles to reduce the impact of the external environment on the test results.

[0123] Optionally, other sensor data, such as temperature, humidity, wind speed and other environmental parameters, can be combined to improve the accuracy of the test results using data fusion technology. By analyzing the impact of these parameters on the displacement of the power equipment, the actual displacement of the equipment can be more accurately assessed.

[0124] Optionally, multiple IBIS-FS systems can be deployed at different angles to achieve all-round monitoring of power equipment. This multi-angle monitoring can provide more comprehensive displacement data, which helps to analyze and verify displacement results from different perspectives.

[0125] Optionally, IBISData Viewer software can be used for real-time data processing and analysis, which can quickly identify and respond to displacement changes of power equipment. Through real-time monitoring and analysis, abnormal situations can be discovered in time and measures can be taken.

[0126] After the electrical equipment has been retrofitted for earthquake resistance, the traditional method is to determine the effect of the retrofit by building a corresponding physical model or performing simulation tests. However, this method is inefficient and cannot quickly obtain the actual reinforcement effects of different electrical equipment.

[0127] The method in the embodiment of the present application can quickly and accurately perform comprehensive on-site acceleration testing and displacement testing after modification while keeping the electrical equipment in place. This not only avoids the safety risks and additional costs that may be caused by equipment movement, but also greatly shortens the test cycle, allowing technicians to obtain instant feedback on the modification effect, thereby accelerating the optimization and adjustment process and ensuring the quality and efficiency of electrical equipment modification work.

[0128] Based on the description of the aforementioned method embodiment, the embodiment of the present application further discloses an acceleration testing device for power grid equipment after on-site modification.

[0129] Fig.11 A schematic diagram of the structure of an acceleration test device after field modification of a power grid device provided in an embodiment of the present application is shown in FIG. Fig.11 As shown, the acceleration testing device 1100 after field modification of the power grid equipment may include:

[0130] The first test module 1110 is used to perform in-situ dynamic testing on the equipment using an acceleration sensor before and after the equipment is subjected to seismic isolation measures, to monitor changes in the fundamental frequency of the equipment, and changes in the characteristics of the equipment itself after the seismic isolation measures are applied;

[0131] The second test module 1120 is used to arrange the IBIS-FS system to the side of the above-mentioned device to perform in-plane vibration measurement and obtain in-plane vibration measurement data;

[0132] The third test module 1130 is used to arrange the IBIS-FS system in the lateral direction of the device to perform out-of-plane vibration measurement and obtain out-of-plane vibration measurement data.

[0133] It can be understood that the relevant contents of each module in the above device have been described in detail in the aforementioned method embodiment, and the specific contents can be referred to the method embodiment; that is, the acceleration test device after field modification of power grid equipment provided in this application can be performed as follows Figure 1 Any steps in the illustrated embodiment will not be described in detail here.

[0134] In one embodiment of the present application, an electronic device is also provided. The electronic device may include a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the execution Figure 1 Any step in the method embodiment shown can execute the relevant construction of the model and can also execute the application calculation of the model. The electronic device can also include an input / output device, etc. In a specific implementation, the electronic device can be a server, a terminal device, etc.

[0135] In one embodiment, a computer-readable storage medium is further provided. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the processor executes any step in the above method embodiment.

[0136] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0137] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0138] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for testing the acceleration of power grid equipment after on-site transformation, characterized in that: The method comprises: Before and after the seismic isolation measures are installed on the equipment, an acceleration sensor is used to perform in-situ dynamic testing on the equipment to monitor the fundamental frequency changes of the equipment and the changes in the characteristics of the equipment itself after the seismic isolation measures are installed; Arrange the IBIS-FS system at the side of the device to perform in-plane vibration measurement and obtain in-plane vibration measurement data; The IBIS-FS system is arranged in the lateral direction of the device to perform out-of-plane vibration measurement to obtain out-of-plane vibration measurement data.

2. The acceleration test method after field transformation of power grid equipment according to claim 1 is characterized in that: Before and after the seismic isolation measures are installed on the equipment, an acceleration sensor is used to perform an in-situ dynamic test on the equipment, including: Before and after the damper is installed on the electrical equipment, an acceleration sensor is used to perform an in-situ dynamic test on the electrical equipment; Before and after the inertia container is installed on the circuit breaker device, an acceleration sensor is used to perform an in-situ dynamic test on the circuit breaker device.

3. The acceleration test method after field transformation of power grid equipment according to claim 1, characterized in that: The device is a lightning arrester; The acceleration sensor is arranged at the bottom flange of the arrester and the middle of the concrete column; Before and after the seismic isolation measures are installed on the equipment, an acceleration sensor is used to perform an in-situ dynamic test on the equipment to monitor the fundamental frequency change of the equipment and the change of the characteristics of the equipment itself after the seismic isolation measures are installed, including: Before and after the lightning arrester is installed with a seismic isolation support, an impact load is applied at different positions to measure the acceleration response time history curve of the overall structure after the impact load; Performing Fourier transformation of the acceleration response time history curve to obtain the fundamental frequency change of the arrester before and after the isolation support is installed.

4. The acceleration test method after field transformation of power grid equipment according to claim 3 is characterized in that: The method further comprises: The fundamental frequency change of the equipment and the acceleration response time history curve are analyzed to generate a test result of the equipment reinforcement effect.

5. The acceleration test method after field transformation of power grid equipment according to claim 2, characterized in that: The step of arranging the IBIS-FS system at the side of the device to perform in-plane vibration measurement and obtain in-plane vibration measurement data includes: Arrange the IBIS-FS system on the side of the circuit breaker device; The IBIS-FS system is used to perform measurements in the left and right directions based on the position of the knocking excitation, and the first number of measurements are performed in each direction. A single knock of the second number is performed for each measurement, and the time for each measurement is the first preset duration.

6. The acceleration test method for power grid equipment after on-site transformation according to claim 5 is characterized in that: The step of arranging the IBIS-FS system in a lateral direction of the device to perform out-of-plane vibration measurement and obtain out-of-plane vibration measurement data comprises: Arrange the IBIS-FS system in the transverse direction of the circuit breaker device; The IBIS-FS system is used to perform measurements in the left and right directions based on the position of the knocking excitation, and the third number of measurements are performed in each direction. A fourth number of single knocks are performed for each measurement, and the duration of each measurement is the second preset time length.

7. The acceleration test method after field transformation of power grid equipment according to claim 6, characterized in that: The method further comprises: When performing the in-plane vibration measurement and / or the out-of-plane vibration measurement, an accelerometer is used to calibrate and compensate for vibrations generated by passing vehicles.

8. An acceleration test device for power grid equipment after on-site transformation, characterized in that: include: The first test module is used to perform in-situ dynamic testing on the equipment using an acceleration sensor before and after the seismic isolation measures are installed, to monitor the fundamental frequency change of the equipment, and the change of the characteristics of the equipment itself after the seismic isolation measures are installed; The second test module is used to arrange the IBIS-FS system to the side of the device to perform in-plane vibration measurement and obtain in-plane vibration measurement data; The third test module is used to arrange the IBIS-FS system in the lateral direction of the device to perform out-of-plane vibration measurement and obtain out-of-plane vibration measurement data.

9. An electronic device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

Images