Circuit breaker action sound analysis method and device, storage medium and processor

Abstract

The embodiment of the invention provides a three-phase circuit breaker action sound analysis method and device, a storage medium and a processor, and belongs to the technical field of electrics. The analysis method for the action sound of the three-phase circuit breaker comprises the following steps: receiving an action sound signal in a closing process and / or a breaking process of the three-phase circuit breaker acquired by audio receiving equipment; extracting starting time of an action time sequence and sound characteristics and duration time in the action time sequence from the action sound signal, wherein the sound characteristics comprise center frequency and volume; and based on the extracted sound features, the starting time and the duration time, determining action features of corresponding components, and further judging faults of components such as an energy storage motor, an energy storage spring, moving and static contacts and the like of the three-phase circuit breaker.

Description

Technical Field

[0001] The present invention relates to the field of electrical technology, and in particular to a method, device, storage medium and processor for analyzing the operating sound of a three-phase circuit breaker. Background Art

[0002] During the operation of high-voltage equipment, various sounds are generated, such as air discharge, high-frequency electromagnetic vibration, and component operation sounds. It is necessary to distinguish the sounds of different components as much as possible, determine whether the sounds are abnormal, and determine the maintenance plan. This requires accurate judgment of the sound characteristics during the operation of high-voltage equipment, and based on the sound characteristics, determine whether the internal components have changed, providing basic parameters for technical comparison for predictive maintenance. However, in the prior art, there is a lack of analysis methods for the operation sounds of three-phase circuit breakers. Summary of the invention

[0003] The purpose of the embodiment of the present invention is to provide a method, by which the operating sound of a circuit breaker can be analyzed and based on which it can be inferred whether the internal components of the three-phase circuit breaker are abnormal.

[0004] In order to achieve the above object, an embodiment of the present invention provides a method for analyzing the operating sound of a three-phase circuit breaker, comprising:

[0005] receiving an action sound signal during a closing process and / or a disconnecting process of a three-phase circuit breaker obtained through an audio receiving device;

[0006] Extracting the start time of the action sequence and the sound features and duration in the action sequence from the action sound signal, wherein the sound features include the center frequency and volume; and

[0007] Based on the extracted sound features, start time and duration, the action characteristics of the corresponding components are determined.

[0008] Specifically, extracting the start time of the action sequence and the sound features and duration of the action sequence from the action sound signal includes:

[0009] For the closing process of the three-phase circuit breaker, the intermediate relay closing sound signal is extracted from the action sound signal, and the start time of the intermediate relay closing sound signal is used as the start time of the action sequence;

[0010] For the disconnection process of the three-phase circuit breaker, the intermediate relay disconnection sound signal is extracted from the action sound signal, and the start time of the intermediate relay disconnection sound signal is used as the start time of the action sequence;

[0011] The action sound of the contact, the energy storage motor and / or the energy storage spring is extracted from the action sound signal, and the center frequency, volume and duration of the extracted action sound are obtained.

[0012] Preferably, typical noises during the closing process and / or the breaking process of the three-phase circuit breaker are recorded in advance, and the sound characteristics of the typical noises are used to identify the action timing node at any time point or time period in the action sound signal.

[0013] Specifically, typical noises include one or more of the following: the sound of the energy storage motor rotating, the sound of the energy storage motor pulling the energy storage spring, the sound of the moving contact approaching or moving away from the static contact, and the discharge sound caused by the contact jumping.

[0014] Further, based on the extracted sound features, start time and duration, the action features of the corresponding components are determined, including one or more of the following:

[0015] For a closing process and / or breaking process of a three-phase circuit breaker, if the action sound and duration of the three-phase contacts are extracted respectively, it is determined that the three-phase contacts are closed at different times;

[0016] If the discharge sound is extracted, or the high-frequency part is advanced compared to the typical noise sound characteristics, it is determined that contact bounce has occurred;

[0017] If the extracted sound of the energy storage motor rotating has a larger central frequency than the typical noise, it is determined that the torque of the energy storage spring is reduced; if the extracted sound of the energy storage motor rotating has a longer duration, it is determined that the energy storage motor is slipping; and / or

[0018] For the disconnecting process of a three-phase circuit breaker, if the discharge sound generated by the moving contact moving away from the static contact is extracted, it is determined that an arc occurs between the contacts, and the number of times an arc occurs between the contacts is determined based on the center frequency, volume and duration of the discharge sound.

[0019] Optionally, a noise localization method is used to determine whether the current source of the action sound signal is at the location of the three-phase circuit breaker to filter background noise.

[0020] On the other hand, the present application also provides a three-phase circuit breaker fault analysis method, comprising:

[0021] Determine the action characteristics of the three-phase circuit breaker during the closing process and / or the breaking process according to the three-phase circuit breaker action sound analysis method of the present application;

[0022] Determine the faults in the components of the three-phase circuit breaker based on the action characteristics.

[0023] Preferably, the fault analysis method for the three-phase circuit breaker further comprises: accumulating the number of times arcs occur at the contacts of the three-phase circuit breaker, and determining the life of the contacts of the three-phase circuit breaker based on the accumulated number of times.

[0024] On the other hand, the present application also provides an analysis device for the action sound of a three-phase circuit breaker, comprising an audio receiving device and a sound analysis module, wherein the sound analysis module is configured to: execute the analysis method for the action sound of a three-phase circuit breaker of the present application.

[0025] On the other hand, the present application also provides a three-phase circuit breaker fault analysis device, including an audio receiving device and a fault analysis module, wherein the fault analysis module is configured to: execute the three-phase circuit breaker fault analysis method of the present application.

[0026] On the other hand, the present invention provides a machine-readable storage medium having instructions stored thereon, the instructions being used to enable a machine to execute: the method for analyzing the operating sound of a three-phase circuit breaker of the present application, or the method for analyzing the fault of a three-phase circuit breaker.

[0027] On the other hand, the present application also provides a processor for running a program, wherein the program, when being run, is used to execute: the method for analyzing the operating sound of a three-phase circuit breaker of the present application, or the method for analyzing the fault of a three-phase circuit breaker.

[0028] On the other hand, the present invention provides a computer program product, including a computer program, which, when executed by a processor, implements: the method for analyzing the operating sound of a three-phase circuit breaker of the present application, or the method for analyzing the fault of a three-phase circuit breaker.

[0029] Through the above technical scheme, the action sound signal of the closing process and / or breaking process of the three-phase circuit breaker is first obtained by the audio receiving device, and then the start time of the action sequence and the sound characteristics and duration in the action sequence are extracted from the action sound signal, wherein the sound characteristics include the center frequency and volume. Finally, based on the extracted sound characteristics, start time and duration, the action characteristics of the corresponding components are determined, such as the sound of the energy storage motor rotating, the sound of the energy storage motor pulling the energy storage spring, the sound of the moving contact approaching or moving away from the static contact, the discharge sound generated by the contact jumping, etc., whether the energy storage motor, the energy storage spring, the moving and static contacts have abnormal actions in the sound, and then it can be judged whether there is a fault in the components of the three-phase circuit breaker.

[0030] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0032] Figure 1 It is a flow chart of an embodiment of a method for analyzing the operating sound of a three-phase circuit breaker according to the present invention. DETAILED DESCRIPTION

[0033] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0034] The embodiment of the present invention provides a method for analyzing the operating sound of a three-phase circuit breaker, which is used to identify the operating characteristics of corresponding components during the closing process and / or the breaking process of the three-phase circuit breaker. The implementation process is as follows: Figure 1 As shown, including:

[0035] Step 1: receiving an action sound signal of a three-phase circuit breaker during a closing process and / or a disconnecting process obtained through an audio receiving device;

[0036] Step 2: extracting the start time of the action sequence and the sound features and duration of the action sequence from the action sound signal, wherein the sound features include the center frequency and volume; and

[0037] Step 3: Based on the extracted sound features, start time and duration, determine the action characteristics of the corresponding components.

[0038] Specifically, the action sound signal during the closing process of the three-phase circuit breaker obtained in step 1 can be regarded as a sound combination of multiple action sequences. This sound combination may include:

[0039] When the three-phase circuit breaker is initially closed, the intermediate relay coil is closed and energized first, and its normally open contact is closed and the normally closed contact is opened, producing a typical "intermediate relay closing sound", which is a crisp "click" sound. In this embodiment, the center frequency and volume of the action sequence sound are extracted, the duration of the sound is recorded, and the start time of the sound is used as the start time of the three-phase circuit breaker closing action sequence;

[0040] Then, the energy storage switch releases the spring, driving the moving contact of the three-phase circuit breaker to move toward the static contact, and the strongest sound during the action is a "clang" sound. In this embodiment, since there are more or less differences in the action time of the three-phase contacts, the action timing sound is recorded by an audio receiving device, and the center frequency, volume and duration of the sound are analyzed to distinguish the three typical action time points of the three-phase contacts. At the same time, the circuit breaker contact jump will produce a discharge sound. If the high-frequency part of the action timing sound recorded by the audio receiving device is advanced, it can be determined that the contact jump has occurred;

[0041] Then, the electric energy storage motor starts to rotate, making a periodic "click-click" sound. This sound is the sound of the motor rotating one circle, and after the energy storage spring is pulled up, the clamp catches the spring action. In this embodiment, the center frequency and volume of the action timing sound are extracted to analyze whether the torque of the motor pulling the spring is normal. If the center frequency is too high, the spring is aged and the spring torque is reduced. At the same time, the duration of the timing sound and the number of times the highest tone occurs are also analyzed. If the duration becomes longer, it means that the motor is slipping and the motor output shaft needs to be checked.

[0042] In some embodiments, typical noises during the closing and / or breaking process of the three-phase circuit breaker are recorded in advance, and the sound characteristics of the typical noises are used to identify the action timing node at any time point or time period in the action sound signal. Specifically, the typical noises include one or more of the following: the sound of the energy storage motor rotating, the sound of the energy storage motor pulling the energy storage spring, the sound of the moving contact approaching or moving away from the static contact, and the discharge sound caused by the contact jumping.

[0043] The action sound signal during the disconnection process of the three-phase circuit breaker can also be regarded as a combination of multiple action sequence sounds, and the action sequence and noise characteristics are similar to those when the three-phase circuit breaker is closed. The difference is that during the disconnection process of the three-phase circuit breaker, a strong noise will be emitted when the moving contact moves away from the static contact, and an arc will appear between the three pairs of moving and static contacts. Therefore, the action sound signal during the disconnection process also includes the action sequence sound of the moving contact moving away from the static contact. By extracting the center frequency, volume and duration from the action sequence sound, it is possible to determine the number of arcing times of the contact, which determines the contact life of the circuit breaker.

[0044] Furthermore, step 2 can be further divided into the following steps:

[0045] Step 201: for the closing process of the three-phase circuit breaker, extract the intermediate relay closing sound signal from the action sound signal, and use the start time of the intermediate relay closing sound signal as the start time of the action sequence;

[0046] Step 202: for the disconnection process of the three-phase circuit breaker, extract the intermediate relay disconnection sound signal from the action sound signal, and use the start time of the intermediate relay disconnection sound signal as the start time of the action sequence;

[0047] Step 203: extracting the action sound of the contact, the energy storage motor and / or the energy storage spring from the action sound signal, and obtaining the center frequency, volume and duration of the extracted action sound.

[0048] Furthermore, in step 3, based on the extracted sound features, start time and duration, the action features of the corresponding components are determined, including one or more of the following:

[0049] For a closing process and / or breaking process of a three-phase circuit breaker, if the action sound and duration of the three-phase contacts are extracted respectively, it is determined that the three-phase contacts are closed at different times;

[0050] If the discharge sound is extracted, or the high-frequency part is advanced compared to the typical noise sound characteristics, it is determined that contact bounce has occurred;

[0051] If the extracted sound of the energy storage motor rotating has a larger central frequency than the typical noise, it is determined that the torque of the energy storage spring is reduced; if the extracted sound of the energy storage motor rotating has a longer duration, it is determined that the energy storage motor is slipping; and / or

[0052] For the disconnecting process of a three-phase circuit breaker, if the discharge sound generated by the moving contact moving away from the static contact is extracted, it is determined that an arc occurs between the contacts, and the number of times an arc occurs between the contacts is determined based on the center frequency, volume and duration of the discharge sound.

[0053] In some implementations, a noise localization method is first used to determine whether the current source of the action sound signal is at the three-phase circuit breaker position to filter background noise.

[0054] Among them, the noise positioning method can be: first, according to the different attenuation of the noise signals synchronously received by the three audio receiving devices in the audio receiving device array, determine the relative distances between the noise source and the three audio receiving devices respectively, and then, according to the maximum distance of sound transmission in the space where the high-voltage equipment is located, convert the three relative distances obtained into absolute distances, and finally determine the coordinates of the noise source by combining the known coordinates of the three audio receiving devices and the distances between the noise source and the three audio receiving devices, so as to accurately calculate the position of the noise source without the need for personnel to get close to observe.

[0055] The noise positioning method can also be: first receive the noise signal in the space where the high-voltage equipment is located by three audio receiving devices A1, A2, and A3 arranged in a triangle, and synchronously receive the noise signal, and determine the correction coefficient of the noise signal amplitude and the sound transmission distance in the space where the high-voltage equipment is located through a correction algorithm, and then combine the correction coefficient and the three received noise signal amplitudes to determine the distance between the noise source and A1, A2, and A3 respectively, and then determine the coordinates of the noise source in the three-dimensional coordinate system based on the obtained distance, so that the position of the noise source can be accurately calculated without the need for personnel to get close to observe.

[0056] Compared with the prior art, the technical advantages of the method for analyzing the operating sound of a three-phase circuit breaker of the present invention are:

[0057] 1. For a closing process and / or breaking process of a three-phase circuit breaker, obtain the sounds of different action sequences, and identify the action characteristics of the components corresponding to the action sequence according to the frequency distribution, volume, start time and duration of the sounds, and then judge the possible faults of the corresponding components based on the action characteristics;

[0058] 2. Continuously record each identification result to obtain the quality and parameter characteristics of this type of three-phase circuit breaker and form a predictive maintenance plan based on it;

[0059] 3. By recording the typical noise in the closing process and / or breaking process of the three-phase circuit breaker in advance and using the sound characteristics of the typical noise to identify the action timing sound in the action sound signal, the accuracy of the recognition result can be improved;

[0060] 4. By determining whether the current source of the action sound signal is at the location of the three-phase circuit breaker according to the noise localization method, background noise can be filtered to further improve the accuracy of the recognition result.

[0061] 5. Without stopping the work, the possible faults of the three-phase circuit breaker can be predicted according to the analysis method of this application, and a power outage maintenance plan for high-voltage equipment can be formulated in advance, which can save power outage maintenance time.

[0062] An embodiment of the present invention provides a fault analysis method for a three-phase circuit breaker, comprising:

[0063] Determine the action characteristics of the three-phase circuit breaker during the closing process and / or the breaking process according to the three-phase circuit breaker action sound analysis method of the present application;

[0064] Determine the faults in the components of the three-phase circuit breaker based on the action characteristics.

[0065] In some embodiments, the maintenance method of high-voltage equipment further includes: accumulating the number of times arcs occur at contacts of the three-phase circuit breaker, and determining the contact life of the three-phase circuit breaker based on the accumulated number of times.

[0066] An embodiment of the present invention provides an analysis device for the action sound of a three-phase circuit breaker, comprising an audio receiving device and a sound analysis module, wherein the sound analysis module is configured to: execute the analysis method for the action sound of a three-phase circuit breaker of the present application.

[0067] An embodiment of the present invention provides a device for analyzing the operating sound of a three-phase circuit breaker. The device includes a processor and a memory. A sound analysis module is stored in the memory as a program unit. The processor executes the program unit stored in the memory to implement corresponding functions.

[0068] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the action characteristics of the components in the three-phase circuit breaker during the closing process and / or the breaking process can be identified by adjusting the kernel parameters.

[0069] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0070] An embodiment of the present invention provides a fault analysis device for a three-phase circuit breaker, comprising an audio receiving device and a fault analysis module, wherein the fault analysis module is configured to: execute the fault analysis method for a three-phase circuit breaker of the present application.

[0071] An embodiment of the present invention provides a fault analysis device for a three-phase circuit breaker, the device comprising a processor and a memory, a fault analysis module is stored in the memory as a program unit, and the processor executes the program unit stored in the memory to implement corresponding functions.

[0072] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the action characteristics of the components in the three-phase circuit breaker during the closing process and / or the breaking process can be identified by adjusting the kernel parameters, so as to determine the possible faults of the components.

[0073] An embodiment of the present invention provides a storage medium on which a program is stored. When the program is executed by a processor, the method for analyzing the operating sound of a three-phase circuit breaker or the method for analyzing the fault of a three-phase circuit breaker of the present application is implemented.

[0074] An embodiment of the present invention provides a processor, which is used to run a program, wherein when the program is run, the method for analyzing the action sound of a three-phase circuit breaker or the method for analyzing the fault of a three-phase circuit breaker of the present application is executed.

[0075] The embodiment of the present invention provides a device, the device includes a processor, a memory, and a program stored in the memory and executable on the processor, and when the processor executes the program, the method for analyzing the action sound of a three-phase circuit breaker of the present application or the steps of the method for analyzing the fault of a three-phase circuit breaker is implemented. The device in this article can be a server, a PC, a PAD, a mobile phone, etc.

[0076] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program that initializes the steps of the three-phase circuit breaker operation sound analysis method or the three-phase circuit breaker fault analysis method of the present application.

[0077] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0078] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0079] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0080] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0081] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0082] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0083] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0084] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0085] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A method for analyzing the operating sound of a three-phase circuit breaker, comprising: Receiving an action sound signal during a closing process and / or a breaking process of the three-phase circuit breaker obtained through an audio receiving device; Extracting the start time of the action sequence and the sound features and duration in the action sequence from the action sound signal, wherein the sound features include center frequency and volume; and Based on the extracted sound features, the start time and the duration, action features of corresponding components are determined.

2. The method for analyzing the operating sound of a three-phase circuit breaker according to claim 1, characterized in that: The step of extracting the start time of the action sequence and the sound features and duration of the action sequence from the action sound signal comprises: For the closing process of the three-phase circuit breaker, extracting the intermediate relay closing sound signal from the action sound signal, and taking the start time of the intermediate relay closing sound signal as the start time of the action sequence; For the disconnection process of the three-phase circuit breaker, extracting the intermediate relay disconnection sound signal from the action sound signal, and taking the start time of the intermediate relay disconnection sound signal as the start time of the action sequence; The action sound of the contact, the energy storage motor and / or the energy storage spring is extracted from the action sound signal, and the center frequency, volume and duration of the extracted action sound are obtained.

3. The method for analyzing the operating sound of a three-phase circuit breaker according to claim 2, characterized in that: Typical noises during the closing process and / or the breaking process of the three-phase circuit breaker are recorded in advance, and the sound characteristics of the typical noises are used to identify the action timing node at any time point or time period in the action sound signal.

4. The method for analyzing the operating sound of a three-phase circuit breaker according to claim 3, characterized in that: The typical noises include one or more of the following: the sound of the energy storage motor rotating, the sound of the energy storage motor pulling the energy storage spring, the sound of the moving contact approaching or moving away from the static contact, and the discharge sound caused by the contact jumping.

5. The method for analyzing the operating sound of a three-phase circuit breaker according to claim 3, characterized in that: The step of determining the action feature of the corresponding component based on the extracted sound feature, the start time and the duration includes one or more of the following: For a closing process and / or a breaking process of the three-phase circuit breaker, if the action sounds and durations of the three-phase contacts are respectively extracted, it is determined that the three-phase contacts are closed at different times; If a discharge sound is extracted, or the sound feature has a high-frequency portion ahead of the typical noise, it is determined that contact bounce has occurred; If the extracted sound of the energy storage motor rotating has a larger central frequency than the typical noise, it is determined that the torque of the energy storage spring is reduced; if the extracted sound of the energy storage motor rotating has a longer duration, it is determined that the energy storage motor is slipping; and / or For the disconnecting process of the three-phase circuit breaker, if the discharge sound generated by the moving contact moving away from the static contact is extracted, it is determined that an arc occurs between the contacts, and the number of times an arc occurs between the contacts is determined based on the center frequency, volume and duration of the discharge sound.

6. The method for analyzing the operating sound of a three-phase circuit breaker according to claim 3, characterized in that: It is determined whether the current source of the action sound signal is at the position of the three-phase circuit breaker according to the sound positioning method to filter the background noise.

7. A fault analysis method for a three-phase circuit breaker, comprising: Determine the action characteristics of the three-phase circuit breaker during the closing process and / or the breaking process according to the method for analyzing the action sound of the three-phase circuit breaker according to any one of claims 1 to 6; The faults existing in the components of the three-phase circuit breaker are determined according to the action characteristics.

8. The fault analysis method for a three-phase circuit breaker according to claim 7, characterized in that: Also includes: The number of times arcs occur at contacts of a three-phase circuit breaker is accumulated, and the life of the contacts of the three-phase circuit breaker is determined based on the accumulated number of times.

9. A device for analyzing the operating sound of a three-phase circuit breaker, characterized in that: The invention comprises an audio receiving device and a sound analysis module, wherein the sound analysis module is configured to execute the analysis method of the operating sound of a three-phase circuit breaker according to any one of claims 1 to 6.

10. A fault analysis device for a three-phase circuit breaker, characterized in that: It comprises an audio receiving device and a fault analysis module, wherein the fault analysis module is configured to: execute the fault analysis method of the three-phase circuit breaker according to claim 7 or 8.

11. A machine-readable storage medium having instructions stored thereon, the instructions being used to cause a machine to execute: the method for analyzing the operating sound of a three-phase circuit breaker according to any one of claims 1 to 6, or the method for analyzing the fault of a three-phase circuit breaker according to claim 7 or 8.

12. A processor, characterized in that: Used to run a program, wherein the program, when run, is used to execute: the method for analyzing the operating sound of a three-phase circuit breaker according to any one of claims 1 to 6, or the method for analyzing the fault of a three-phase circuit breaker according to claim 7 or 8.

13. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the computer program realizes: the method for analyzing the operating sound of a three-phase circuit breaker according to any one of claims 1 to 6, or the method for analyzing the failure of a three-phase circuit breaker according to claim 7 or 8.

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