Method for evaluating sound and vibration transmission loss performance of transformer vibration reduction rubber mat

Abstract

The invention discloses a method, a system, equipment, a medium and a program for evaluating the sound and vibration transmission loss performance of a transformer vibration reduction rubber mat, and belongs to the technical field of power equipment. The method comprises the steps that a vibration measurement sensor is arranged on the surface of a transformer oil tank without a vibration reduction rubber mat, and the vibration speed and sound power are obtained when the vibration reduction rubber mat is not installed; a vibration measurement sensor is arranged on the surface of the transformer oil tank provided with the vibration reduction rubber mat, and the vibration speed and the sound power are obtained when the vibration reduction rubber mat is installed; according to the vibration speed and the sound power when the vibration reduction rubber mat is not installed and the vibration speed and the sound power when the vibration reduction rubber mat is installed, the vibration reduction transmission loss rate is calculated; and drawing a VATLR relation curve according to the vibration reduction transmission loss rate, and evaluating the current sound state of the vibration reduction rubber mat of the transformer. According to the method, the relationship between the vibration reduction rubber mat and the acoustic vibration loss rate is obtained, quantitative evaluation of the loss effect of the vibration reduction rubber mat on acoustic vibration transmission is completed, and the mechanical performance and the laying position of the vibration reduction rubber mat are determined to effectively suppress the vibration noise of power equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to a method, system, device, medium and program for evaluating the sound and vibration transmission loss performance of a transformer damping rubber pad. BACKGROUND

[0002] In the stable operation of the power system, power equipment plays a crucial role, like the "heart" and "nerves" of the huge power grid, continuously delivering the required electric energy to various fields. Among them, the transformer, as an indispensable key equipment in the power system, is mainly used to compensate for the capacitive charging power of the line, limit the rise of power frequency voltage and operating overvoltage, thereby effectively improving the stability and power transmission capacity of the power system, and ensuring the safe and reliable operation of the power grid. However, during the operation of the transformer, due to the strong magnetic field generated by the current passing through the winding, under the interaction of electromagnetic force, vibrations inevitably occur in each component inside the equipment. This vibration not only causes structural fatigue of the equipment itself, shortening its service life, but also produces annoying noise, causing serious impact on the surrounding environment and people's life.

[0003] The noise generated by the operation of power equipment is essentially the sound wave formed by the vibration of surrounding air particles caused by the vibration of the object. The noise generated by the transformer has a complex frequency spectrum, covering multiple frequency bands such as low frequency, medium frequency and high frequency. Low-frequency noise has strong penetrating power and long propagation distance, and can easily penetrate through building walls to interfere with indoor environments; while medium and high frequency noise is more likely to cause auditory discomfort to people, and long-term exposure to such noise environment can lead to a series of health problems such as hearing loss, nervous system disorders, cardiovascular diseases, etc. In addition, with the continuous improvement of social requirements for environmental protection and the quality of life of residents, the noise problem of power equipment operation has attracted increasing attention and has become one of the key factors restricting the sustainable development of the power industry.

[0004] In order to effectively suppress the vibration and noise transmission generated by the operation of power equipment, especially transformers, and reduce the noise level of equipment operation, the industry widely adopts the method of setting damping rubber pads between the equipment and the foundation. As a kind of elastic vibration isolation material, the working principle of damping rubber pad is based on the elastic damping characteristic. When the vibration energy generated by the equipment is transmitted to the damping rubber pad, the rubber pad will deform elastically, converting part of the vibration energy into its own elastic potential energy and gradually consuming it through internal damping, thereby reducing the vibration energy transmitted to the foundation and achieving the purpose of reducing vibration and noise.

[0005] However, in practical applications, the vibration and noise reduction effect of the damping rubber pad is influenced by various factors, among which the mechanical properties and the laying position are the two most critical factors. The mechanical properties of the damping rubber pad include hardness, elastic modulus, damping coefficient, etc., which directly determine the response characteristics of the rubber pad to vibrations of different frequencies and amplitudes. Different types and specifications of power equipment have different vibration frequencies and amplitudes, so it is necessary to select a damping rubber pad with appropriate mechanical properties to achieve the best damping effect. However, due to the complexity and diversity of the vibration characteristics of power equipment and the nonlinear characteristics of the damping rubber pad material itself, it is difficult to determine the mechanical property parameters of the damping rubber pad that are most suitable for a specific device through precise theoretical calculations.

[0006] At the same time, the laying position of the damping rubber pad also has a significant impact on the vibration and noise reduction effect. Unreasonable laying position may result in ineffective transmission of device vibration energy to the rubber pad, or the rubber pad cannot fully exert its elastic damping effect, thereby reducing the damping effect. For example, if the rubber pad is not laid flat, it will cause uneven stress on the device, resulting in local stress concentration and further causing new vibration and noise problems; if the connection between the rubber pad and the device or foundation is not firm, it may loosen during device operation, which will also seriously affect the damping effect. However, in actual engineering, due to the complexity of the structure of power equipment and the limitation of installation space, it is difficult to accurately determine the optimal laying position of the damping rubber pad through calculation.

[0007] In summary, although setting up a damping rubber pad is a common method to suppress the transmission of vibration and noise of power equipment, the mechanical properties, laying position, etc. of the damping rubber pad have a significant impact on the damping effect of the device noise and vibration, which is difficult to obtain through calculation, which brings great challenges to the damping and noise reduction work of power equipment. SUMMARY

[0008] In view of the problem in the prior art that the mechanical properties, laying position, etc. of the damping rubber pad have a significant impact on the damping effect of the device noise and vibration, which is difficult to obtain through calculation, and the loss effect of the damping rubber pad on the transmission of sound and vibration cannot be quantitatively evaluated, the present application provides an evaluation method for the sound and vibration transmission loss performance of a transformer damping rubber pad, which obtains the relationship between the rubber pad with different mechanical properties and the sound and vibration loss rate under different compression amounts, quantitatively evaluates the loss effect of the damping rubber pad on the transmission of sound and vibration, and determines the mechanical properties and laying position of the damping rubber pad to effectively suppress the vibration and noise of power equipment.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0010] In a first aspect, the present application provides an evaluation method for the sound and vibration transmission loss performance of a transformer damping rubber pad, comprising: The vibration measuring sensor is arranged on the surface of the transformer oil tank without the damping rubber pad, and the vibration speed and the sound power when the damping rubber pad is not installed are obtained; The vibration measuring sensor is arranged on the surface of the transformer oil tank with the damping rubber pad, and the vibration speed and the sound power when the damping rubber pad is installed are obtained; The damping transmission loss rate is calculated according to the vibration speed and the sound power when the damping rubber pad is not installed and the vibration speed and the sound power when the damping rubber pad is installed; The VATLR relationship curve is drawn according to the damping transmission loss rate, and the state of the current transformer damping rubber pad is evaluated.

[0011] As a further improvement of the application, the vibration measuring sensor is arranged on the surface of the transformer oil tank without the damping rubber pad, and the vibration speed and the sound power when the damping rubber pad is not installed are obtained, including: A plurality of noise measuring sensors are arranged around the transformer oil tank without the damping rubber pad, and a plurality of vibration measuring sensors are uniformly arranged on the surface of the transformer oil tank, and the white noise excitation is applied to the transformer oil tank by the exciter; The vibration speed on the surface of the transformer oil tank and the sound power of the transformer radiation noise when the damping rubber pad is not installed are collected by the noise measuring sensor and the vibration measuring sensor.

[0012] As a further improvement of the application, the vibration measuring sensor is arranged on the surface of the transformer oil tank with the damping rubber pad, and the vibration speed and the sound power when the damping rubber pad is installed are obtained, including: A plurality of noise measuring sensors are arranged around the transformer oil tank with the damping rubber pad, and a plurality of vibration measuring sensors are uniformly arranged on the surface of the transformer oil tank, and the damping rubber pad is compressed to the preset value by the hydraulic servo system to apply pressure to the transformer oil tank; The white noise excitation is applied to the transformer oil tank by the exciter; The vibration speed on the surface of the transformer oil tank and the sound power of the transformer radiation noise when the damping rubber pad is installed are collected by the noise measuring sensor and the vibration measuring sensor.

[0013] As a further improvement of the application, the damping transmission loss rate is calculated according to the vibration speed and the sound power when the damping rubber pad is not installed and the vibration speed and the sound power when the damping rubber pad is installed, ; In the formula, The sound damping transmission loss rate is dB; The effective value of the vibration speed on the surface of the transformer oil tank when the damping rubber pad is not installed; The effective value of the vibration speed on the surface of the transformer oil tank under the same excitation after the damping rubber pad is installed; The sound power of the transformer radiation noise when the damping rubber pad is not installed; For installing the damping rubber pad, the sound power of the radiation noise of the transformer.

[0014] As a further improvement of the present application, when the damping transmission loss rate is negative, the damping rubber pad is reinstalled and the damping transmission loss rate is calculated.

[0015] As a further improvement of the present application, the VATLR relationship curve is drawn according to the damping transmission loss rate, and the current state of the damping rubber pad of the transformer is evaluated, including: The compression amount of the damping rubber pad is changed to obtain the damping transmission loss rate of the damping rubber pad with different elastic modulus, and the VATLR curve is drawn; If the curve peak value of the VATLR curve is within the set range, the performance of the damping rubber pad is good; If the curve peak value of the VATLR curve is not within the set range, the damping rubber pad needs to be replaced.

[0016] In a second aspect, the present application provides a system for evaluating the performance of the sound and vibration transmission loss of the damping rubber pad of the transformer, including: The installation calculation module is used for setting the vibration measuring sensor on the surface of the transformer tank with the installed damping rubber pad to obtain the vibration velocity and the sound power when the damping rubber pad is installed; The installation calculation module is used for setting the vibration measuring sensor on the surface of the transformer tank with the installed damping rubber pad to obtain the vibration velocity and the sound power when the damping rubber pad is installed; The damping transmission loss rate module is used for calculating the damping transmission loss rate according to the vibration velocity and the sound power when the damping rubber pad is not installed, and the vibration velocity and the sound power when the damping rubber pad is installed; The evaluation module is used for drawing the VATLR relationship curve according to the damping transmission loss rate, and evaluating the state of the current damping rubber pad of the transformer.

[0017] In a third aspect, the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to realize the steps of the method for evaluating the performance of the sound and vibration transmission loss of the damping rubber pad of the transformer.

[0018] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program, wherein the computer program is executed by a processor to realize the steps of the method for evaluating the performance of the sound and vibration transmission loss of the damping rubber pad of the transformer.

[0019] In a fifth aspect, the present application provides a computer program product, including computer instructions, wherein the computer instructions are executed by a processor to realize the steps of the method for evaluating the performance of the sound and vibration transmission loss of the damping rubber pad of the transformer.

[0020] Compared with the prior art, the present application has the following beneficial effects: The present application can accurately obtain the vibration speed and sound power data in different states by arranging vibration measuring sensors on the surface of the transformer oil tank without and with the installation of the damping rubber pad. This data acquisition method based on actual measurement breaks away from the limitations of traditional theoretical calculation and provides a solid and reliable data foundation for subsequent accurate calculation of damping transmission loss rate. By comparing the data before and after installation, the loss effect of the damping rubber pad on sound and vibration transmission can be intuitively and accurately quantified, so that the evaluation of the performance of the damping rubber pad moves from fuzzy experience judgment to precise scientific quantification. Moreover, the present application obtains the relationship between the sound and vibration loss rate and the rubber pad with different mechanical properties and different compression amounts, so that various types of damping rubber pads can be comprehensively and systematically tested and evaluated, and a detailed performance database is established. When selecting a type, an engineer only needs to find a suitable damping rubber pad from the database according to the specific requirements of the equipment, which greatly improves the accuracy and efficiency of selection and avoids problems such as poor damping effect and resource waste caused by improper selection. On the other hand, this method helps to determine the optimal laying position of the damping rubber pad. Different laying positions have significant differences in the influence on sound and vibration transmission. By installing the damping rubber pad at different positions and testing and evaluating, the laying scheme that can most effectively suppress the vibration and noise of the power equipment can be found. This not only improves the damping and noise reduction effect of the equipment, but also prolongs the service life of the equipment and reduces the maintenance cost, thereby providing a strong guarantee for the stable operation of the power equipment. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. In the drawings: Figure 1 A flowchart of the method for evaluating the sound and vibration transmission loss performance of a transformer damping rubber pad according to the present application; Figure 2 A schematic diagram of the installation position of the damping rubber pad to be tested in the present application; Figure 3 A structural schematic diagram of the system for evaluating the sound and vibration transmission loss performance of a transformer damping rubber pad according to the present application; Figure 4 A schematic diagram of an electronic device in an embodiment of the present application.

[0022] In the drawings, 1 is a transformer oil tank; 2 is a damping rubber pad to be tested; 3 is a foundation; and 4 is a hydraulic servo system. DETAILED DESCRIPTION

[0023] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the present application will be clearly and completely described below in combination with the drawings in the present application, and the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0025] In view of the fact that the mechanical performance and laying position of the damping rubber pad in the prior art are difficult to calculate the weakening effect on the noise and vibration of the equipment, and the loss effect of the sound and vibration transmission of the damping rubber pad cannot be quantitatively evaluated, the present application provides an evaluation method for the sound and vibration transmission loss performance of a transformer damping rubber pad, as shown in the figure, which comprises: S100: setting a vibration measuring sensor on the surface of the transformer oil tank without installing the damping rubber pad, and obtaining the vibration velocity and sound power when the damping rubber pad is not installed; S200: setting a vibration measuring sensor on the surface of the transformer oil tank with the damping rubber pad installed, and obtaining the vibration velocity and sound power when the damping rubber pad is installed; S300: calculating the damping transmission loss rate according to the vibration velocity and sound power when the damping rubber pad is not installed, and the vibration velocity and sound power when the damping rubber pad is installed; S400: drawing a VATLR relationship curve according to the damping transmission loss rate, and evaluating the current sound state of the transformer damping rubber pad.

[0026] The method obtains the relationship between the sound and vibration loss rate of the rubber pad with different mechanical properties and the rubber pad with different compression amounts, quantitatively evaluates the loss effect of the sound and vibration transmission of the damping rubber pad, and determines the mechanical performance and laying position of the damping rubber pad to effectively suppress the vibration noise of the power equipment.

[0027] The present application will be further explained and described below.

[0028] An evaluation method for the sound and vibration transmission loss performance of a transformer damping rubber pad, and the specific steps comprise: S1: setting a vibration measuring sensor on the surface of the transformer oil tank without installing the damping rubber pad, setting a noise measuring sensor on the periphery of the oil tank, applying a 20-1000Hz white noise excitation to the transformer oil tank, and measuring the vibration velocity effective value when the damping rubber pad is not installed and sound power .

[0029] Specifically, a plurality of noise measurement sensors are uniformly arranged at a distance of 1 m from the transformer without installing the damping rubber pad, and a plurality of vibration measurement sensors are uniformly arranged on the surface of the transformer oil tank to ensure covering the key points of each vibration mode of the surface of the transformer oil tank. The transformer oil tank is excited by the exciter with a white noise excitation with a bandwidth of 20-1000 Hz, and the average value of the effective value of the vibration velocity of each measuring point (unit: m / s) and the sound power level (unit: W) are synchronously collected when the damping rubber pad is not installed.

[0030] S2: The damping rubber pad is installed between the transformer oil tank and the foundation, the hydraulic servo system is used to apply pressure to the transformer oil tank to control the compression amount of the damping rubber pad, and the same excitation is applied to the transformer oil tank. The effective value of the velocity and the vibration velocity sound power .

[0031] Specifically, as shown in Figure 2 , the damping rubber pad 2 to be tested is installed between the transformer oil tank 1 and the foundation 3, and the hydraulic servo system 4 is used to apply a normal force to the transformer oil tank 1 to make the compression amount of the damping rubber pad 2 reach a preset value. A plurality of noise measurement sensors are uniformly arranged at a distance of 1 m from the transformer, and a plurality of vibration measurement sensors are uniformly arranged on the surface of the transformer oil tank. After the pressure is stable, the same white noise excitation as S1 is applied, and the average value of the effective value of the vibration velocity and the vibration velocity sound power .

[0032] S3: Calculation of sound damping transmission loss rate The sound damping transmission loss rate is calculated based on the following formula

[0033] In the formula, is the sound damping transmission loss rate, and the unit is dB (decibel); is the effective value of the vibration velocity on the surface of the transformer oil tank when the damping rubber pad is not installed; is the effective value of the vibration velocity on the surface of the transformer oil tank after the damping rubber pad is installed under the same excitation; is the sound power of the transformer radiation noise when the damping rubber pad is not installed; is the sound power of the transformer radiation noise after the damping rubber pad is installed.

[0034] According to the sound damping transmission loss rate , the vibration energy transmission law is obtained.

[0035] If the sound vibration transmission loss rate VATLR calculation result is negative, it indicates that the rubber pad amplifies the vibration or noise, and the rubber pad selection or installation needs to be checked.

[0036] S4: change the compression amount of the damping rubber pad, use damping rubber pads with different elastic moduli, repeat S2 and S3, and draw a compression amount-VATLR relationship curve, and each elastic modulus damping rubber pad can obtain a relationship curve.

[0037] Specifically, the elastic modulus of the rubber pad is kept unchanged, the compression amount is adjusted according to the preset value, S2-S3 is repeated, and a preset value-VATLR relationship curve is drawn. Replace the damping rubber pad with different elastic moduli, adjust the compression amount according to the preset value, and obtain n preset value-VATLR curves. The compression amount corresponding to the peak value of each curve is the optimal compression amount of the modulus rubber pad, and the peak value of the curve is the optimal vibration isolation performance.

[0038] According to the compression amount, the current transformer damping rubber pad sound state is obtained. If the curve peak value is within the set range, the damping rubber pad has good performance. If the curve peak value is not within the set range, the damping rubber pad needs to be replaced.

[0039] The second object of the present application is to provide a transformer damping rubber pad sound vibration transmission loss performance evaluation system, as shown in Figure 3 It comprises: The installation calculation module 100 is used for setting a vibration measuring sensor on the surface of the transformer oil tank without installing the damping rubber pad, and obtaining the vibration speed and sound power when the damping rubber pad is not installed. The installation calculation module 200 is used for setting a vibration measuring sensor on the surface of the transformer oil tank with the damping rubber pad installed, and obtaining the vibration speed and sound power when the damping rubber pad is installed. The damping transmission loss rate module 300 is used for calculating the damping transmission loss rate according to the vibration speed and sound power when the damping rubber pad is not installed, and the vibration speed and sound power when the damping rubber pad is installed. The evaluation module 400 is used for drawing a VATLR relationship curve according to the damping transmission loss rate, and evaluating the current transformer damping rubber pad sound state.

[0040] As shown in Figure 4As shown, a third objective of this invention is to provide an electronic device comprising a processor 501, a memory 502, and a display screen 503. The memory 502 and the display screen 503 are both connected to the processor 501, such as via a bus 504. Optionally, the electronic device may further include a transceiver 505. It should be noted that in practical applications, the transceiver 505 is not limited to one type, and the structure of this electronic device does not constitute a limitation on the embodiments of this application.

[0041] Processor 501 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 501 may also be a combination that implements computational functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0042] Bus 504 may include a pathway for transmitting information between the aforementioned components. Bus 504 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 504 can be divided into address bus, data bus, control bus, etc.

[0043] The memory 502 may be a ROM (Read Only Memory) or other type of static storage device capable of storing static information and instructions, RAM (Random Access Memory) or other type of dynamic storage device capable of storing information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto.

[0044] The memory 502 is used to store application code that executes the solution of this application, and its execution is controlled by the processor 501. The processor 501 is used to execute the application code stored in the memory 502 to implement the content shown in the foregoing method embodiments.

[0045] Figure 4 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0046] A fourth objective of this invention is to provide a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, performs the aforementioned functions. Figure 1 The illustrated method embodiments include various processes. For example, a memory may include instructions that can be executed by a processor of an electronic device to perform the described method.

[0047] A computer-readable storage medium can be a tangible device that holds and stores instructions used by an instruction execution device. A computer-readable storage medium can be, but is not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any combination thereof. Specifically, a computer-readable storage medium can be a portable computer disk, a hard disk, a USB flash drive, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), staging random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory stick, floppy disk, optical disk, magnetic disk, mechanical encoding device, or any combination thereof.

[0048] A fifth objective of this invention is to provide a computer program product comprising computer instructions that, when executed by a processor, implement the above-described... Figure 1 The various processes of the method embodiments shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0049] Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the foregoing description. Therefore, the scope of this teaching should not be determined by reference to the foregoing description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed inventive subject matter.

[0050] The above content provides a further detailed description of the present invention. It should not be construed that the specific embodiments of the present invention are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection of the present invention as defined by the submitted claims.

Claims

1. A method of evaluating the performance of a vibration damping rubber mat for a transformer in terms of sound vibration transmission loss, characterized by, The application relates to a method for evaluating the state of a damping rubber pad of a transformer. The method comprises the following steps: a vibration measuring sensor is arranged on the surface of a transformer oil tank without a damping rubber pad, and vibration speed and sound power when the damping rubber pad is not installed are obtained; a vibration measuring sensor is arranged on the surface of a transformer oil tank with a damping rubber pad, and vibration speed and sound power when the damping rubber pad is installed are obtained; damping transmission loss rate is calculated according to the vibration speed and sound power when the damping rubber pad is not installed and the vibration speed and sound power when the damping rubber pad is installed; 2. The method of claim 1, wherein the method is a method of evaluating the performance of a vibration damping rubber pad for a transformer, characterized by, a VATLR relationship curve is drawn according to the damping transmission loss rate, and the state of the damping rubber pad of the current transformer is evaluated. The method comprises the following steps: a plurality of noise measuring sensors are arranged around the transformer oil tank without the damping rubber pad, vibration measuring sensors are uniformly arranged on the surface of the transformer oil tank, and a white noise excitation is applied to the transformer oil tank by a vibration exciter; 3. The method of claim 1, wherein the method is a method of evaluating the performance of a vibration damping rubber pad for a transformer, characterized by, vibration speed on the surface of the transformer oil tank and sound power of the transformer radiation noise when the damping rubber pad is not installed are collected by the noise measuring sensors and the vibration measuring sensors. The method comprises the following steps: a plurality of noise measuring sensors are arranged around the transformer oil tank with the damping rubber pad, vibration measuring sensors are uniformly arranged on the surface of the transformer oil tank, and a white noise excitation is applied to the transformer oil tank by a hydraulic servo system; vibration speed on the surface of the transformer oil tank and sound power of the transformer radiation noise when the damping rubber pad is installed are collected by the noise measuring sensors and the vibration measuring sensors.

4. The method of claim 1, wherein the method is a method of evaluating the performance of a vibration damping rubber pad for a transformer, characterized by, The damping transmission loss rate is calculated according to the vibration speed and sound power when the damping rubber pad is not installed and the vibration speed and sound power when the damping rubber pad is installed, ; In the formula, is the sound damping transmission loss rate, unit: dB; is the effective value of the surface vibration speed of the transformer oil tank when the damping rubber pad is not installed; is the effective value of the surface vibration speed of the transformer oil tank under the same excitation after the damping rubber pad is installed; is the sound power of the transformer radiation noise when the damping rubber pad is not installed; is the sound power of the transformer radiation noise after the damping rubber pad is installed.

5. The method of claim 4, wherein the method is a method of evaluating the performance of a vibration damping rubber pad for a transformer, characterized by, When the damping transmission loss rate is negative, the damping rubber pad is reinstalled, and the damping transmission loss rate is calculated.

6. The method of claim 1, wherein the method is a method of evaluating the performance of a vibration damping rubber pad for a transformer, characterized by, The method comprises the following steps: the compression amount of the damping rubber pad is changed, the damping transmission loss rate of the damping rubber pad with different elastic modulus is obtained, and a VATLR curve is drawn; if the curve peak value of the VATLR curve is within the set range, the performance of the damping rubber pad is good; if the curve peak value of the VATLR curve is not within the set range, the damping rubber pad needs to be replaced.

7. A system for evaluating the performance of a vibration damping rubber mat for a transformer in terms of sound vibration transmission loss, characterized by The application relates to a method for evaluating the state of a damping rubber pad of a transformer. The method comprises the following steps: a vibration measuring sensor is arranged on the surface of a transformer oil tank without a damping rubber pad, and vibration speed and sound power when the damping rubber pad is not installed are obtained; a vibration measuring sensor is arranged on the surface of a transformer oil tank with a damping rubber pad, and vibration speed and sound power when the damping rubber pad is installed are obtained; damping transmission loss rate is calculated according to the vibration speed and sound power when the damping rubber pad is not installed and the vibration speed and sound power when the damping rubber pad is installed; a VATLR relationship curve is drawn according to the damping transmission loss rate, and the state of the damping rubber pad of the current transformer is evaluated.

8. An electronic device, comprising: The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the method for evaluating the sound vibration transmission loss performance of the vibration damping rubber pad of the transformer according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the method for evaluating the sound vibration transmission loss performance of the vibration damping rubber pad of the transformer according to any one of claims 1-6.

10. A computer program product, characterised in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the method for evaluating the sound vibration transmission loss performance of the vibration damping rubber pad of the transformer according to any one of claims 1-6.

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