High-voltage circuit breaker closing speed estimation method and device based on sound signal characteristics

Abstract

The present disclosure discloses a method and device for estimating the closing speed of a high-voltage circuit breaker based on sound signal characteristics, and relates to the technical field of high-voltage circuit breakers, and in particular to the field of circuit breaker closing speed. The specific implementation scheme is: obtaining a sound signal of the closing of a high-voltage circuit breaker; calculating the buffer collision sound energy according to the sound signal; and calculating the closing speed according to the buffer collision sound energy. The embodiment of the present disclosure can calculate the closing speed of the circuit breaker by obtaining the buffer collision sound signal energy. The embodiment of the present disclosure can estimate the closing speed without contacting the circuit breaker body and the calculation is convenient, which can reduce the use and maintenance costs and is of great help for the fault diagnosis of the circuit breaker.

Description

Technical Field

[0001] The present disclosure relates to the technical field of high-voltage circuit breakers, and in particular to a method, device, equipment and storage medium for estimating a closing speed of a high-voltage circuit breaker based on sound signal characteristics. Background Art

[0002] The closing speed of a high-voltage circuit breaker is an important indicator of the circuit breaker status and one of the criteria for judging whether the performance of the circuit breaker operating mechanism and energy storage components is normal.

[0003] At present, the circuit breaker travel signal is measured by adding a travel sensor to the circuit breaker, and the signal is input into the switch mechanical characteristic tester or other equipment with signal acquisition and analysis functions to calculate the closing speed of the circuit breaker. This method is an invasive measurement, which is not only difficult to perform frequently, but also has a high maintenance cost and is not suitable for high-voltage circuit breakers when they are running on load. Summary of the invention

[0004] The present disclosure provides a method, an apparatus, a device and a storage medium for estimating the closing speed of a high-voltage circuit breaker based on sound signal characteristics.

[0005] According to a first aspect of the present disclosure, a method for estimating a closing speed of a high-voltage circuit breaker based on sound signal characteristics is provided, comprising:

[0006] Obtain the sound signal of high-voltage circuit breaker closing;

[0007] Calculating the buffer collision sound energy according to the sound signal;

[0008] The closing speed is calculated according to the buffer collision sound energy.

[0009] Optionally, obtaining a sound signal of a high-voltage circuit breaker closing includes:

[0010] Install a sound sensor outside the high-voltage circuit breaker, with the sensor facing the closing spring;

[0011] A sound signal of a collision of a circuit breaker component is acquired according to the sound sensor.

[0012] Optionally, calculating the buffer collision sound energy according to the sound signal includes:

[0013] The square value of the amplitude of the sound signal collected by the sound sensor is defined as the sound signal energy;

[0014] Draw an energy accumulation curve of the sound signal energy;

[0015] Obtaining the accumulated energy at the turning point of the energy accumulation curve;

[0016] Obtaining the accumulated energy at the end point of the energy accumulation curve;

[0017] The difference between the accumulated energy at the end point of the energy accumulation curve and the accumulated energy at the turning point is calculated, and the difference is the buffer collision sound energy.

[0018] Optionally, the calculating the closing speed according to the buffer collision sound energy includes:

[0019] The closing speed is calculated according to the closing constant of the high-voltage circuit breaker and the accumulated energy difference, and the calculation formula of the closing speed is: Among them, v c is the circuit breaker closing speed, E 2 is the buffer collision sound energy, and K is the closing constant of the high-voltage circuit breaker.

[0020] According to a second aspect of the present disclosure, a high-voltage circuit breaker closing speed estimation device based on sound signal characteristics is provided, comprising:

[0021] A signal acquisition module, used to obtain the sound signal of the high-voltage circuit breaker closing;

[0022] an energy calculation module, used to calculate the buffer collision sound energy according to the sound signal;

[0023] The speed calculation module is used to calculate the closing speed according to the energy of the buffer collision sound.

[0024] Optionally, the signal acquisition module further includes:

[0025] A sensor submodule, which consists of a sound sensor installed outside the high-voltage circuit breaker;

[0026] The signal acquisition submodule is used to obtain the sound signal of the collision of the circuit breaker components according to the sound sensor.

[0027] Optionally, the energy calculation module further includes:

[0028] A definition module, used for defining the square value of the amplitude of the sound signal collected by the sound sensor as the sound signal energy;

[0029] A curve acquisition module, used for drawing an energy accumulation curve of the sound signal energy;

[0030] A first energy acquisition submodule, used to acquire the accumulated energy at the turning point of the energy accumulation curve;

[0031] A second energy acquisition submodule is used to acquire the accumulated energy at the end point of the energy accumulation curve;

[0032] The calculation submodule is used to calculate the difference between the accumulated energy at the end point of the energy accumulation curve and the accumulated energy at the turning point.

[0033] Optionally, the speed calculation module further includes:

[0034] The speed calculation submodule is used to calculate the closing speed according to the closing constant of the high-voltage circuit breaker and the accumulated energy difference, and the calculation formula of the closing speed is: Among them, v c is the circuit breaker closing speed, E 2 is the buffer collision sound energy, and K is the closing constant of the high-voltage circuit breaker.

[0035] According to a third aspect of the present disclosure, there is provided an electronic device, including:

[0036] at least one processor;

[0037] and a memory communicatively coupled to the at least one processor;

[0038] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method as described in any one of the first aspects above.

[0039] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to enable the computer to execute the method as described in any one of the above-mentioned first aspects.

[0040] According to a fifth aspect of the present disclosure, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the method as described in any one of the above-mentioned first aspects.

[0041] The technical solution provided by the embodiments of the present disclosure brings at least the following beneficial effects:

[0042] The closing speed of the high-voltage circuit breaker is calculated by the sound signal received by the sound sensor, which avoids direct contact with the circuit breaker body. The closing speed can be estimated without contacting the circuit breaker body and the calculation is convenient, which can reduce the cost of use and maintenance and is of great help for circuit breaker fault diagnosis.

[0043] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0045] Figure 1 It is a flow chart of a method for estimating closing speed of a high-voltage circuit breaker based on sound signal characteristics according to an embodiment of the present disclosure;

[0046] Figure 2 It is a flow chart of a method for estimating closing speed of a high-voltage circuit breaker based on sound signal characteristics according to an embodiment of the present disclosure;

[0047] Figure 3 It is a flow chart of a method for estimating closing speed of a high-voltage circuit breaker based on sound signal characteristics according to an embodiment of the present disclosure;

[0048] Figure 4 It is a flow chart of a method for estimating closing speed of a high-voltage circuit breaker based on sound signal characteristics according to an embodiment of the present disclosure;

[0049] Figure 5 It is a block diagram of a high-voltage circuit breaker closing speed estimation device based on sound signal characteristics according to an embodiment of the present disclosure.

[0050] Figure 6 It is a block diagram of a high-voltage circuit breaker closing speed estimation device based on sound signal characteristics according to an embodiment of the present disclosure.

[0051] Figure 7 It is a block diagram of a high-voltage circuit breaker closing speed estimation device based on sound signal characteristics according to an embodiment of the present disclosure.

[0052] Figure 8 It is a block diagram of a high-voltage circuit breaker closing speed estimation device based on sound signal characteristics according to an embodiment of the present disclosure.

[0053] Fig. 9 It is a block diagram of a device provided according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0054] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0055] The closing speed of a high-voltage circuit breaker is an important indicator of the circuit breaker status and one of the criteria for judging whether the performance of the circuit breaker operating mechanism and energy storage components is normal. At present, it is necessary to measure the circuit breaker travel signal by adding a travel sensor to the circuit breaker, input the switch mechanical characteristics tester or other equipment with signal acquisition and analysis and calculation functions, and then calculate the closing speed of the circuit breaker. This method is an invasive measurement, which is not only difficult to perform frequently, but also has a high maintenance cost, and is not suitable for use when the high-voltage circuit breaker is running under load.

[0056] The sound sensor collects the sound signal when the circuit breaker is in operation without direct contact with the circuit breaker body. It is a non-invasive measurement method. If the closing speed of the circuit breaker can be obtained through analysis and calculation of the sound signal, it will be of great help in the fault diagnosis of the circuit breaker.

[0057] The present disclosure proposes a method for estimating closing speed of a high-voltage circuit breaker based on sound signal characteristics to solve at least one of the above problems.

[0058] Figure 1 is a flow chart of a high-voltage circuit breaker closing speed estimation method based on sound signal characteristics according to an embodiment of the present disclosure, such as Figure 1 As shown, the following steps are included:

[0059] Step 101, obtaining a sound signal of a high-voltage circuit breaker closing.

[0060] In this embodiment, the sound signal of the high-voltage circuit breaker closing is derived from the mechanical collision and vibration during the circuit breaker operation, which can logically reflect the mechanical state of the circuit breaker. The sound signal of the circuit breaker closing is obtained by a sound sensor installed next to the circuit breaker, especially the amplitude change of the sound signal during the circuit breaker operation.

[0061] Step 102: Calculate the buffer collision sound energy according to the sound signal.

[0062] In this embodiment, during the closing process of the circuit breaker, the kinetic energy of the moving contact of the circuit breaker will eventually be converted into mechanical vibration, sound and heat energy. The sound energy is positively correlated with the kinetic energy of the moving contact, and the kinetic energy of the moving contact is proportional to the square of the closing speed. Therefore, the sound energy is proportional to the square of the closing speed.

[0063] In this embodiment, the square value of the amplitude of the sound signal acquired by the sensor when the high-voltage circuit breaker is closed is defined as the circuit breaker collision sound energy.

[0064] Optionally, we obtain the cumulative curve of the circuit breaker closing sound signal energy by obtaining the sound signal amplitude value. When obtaining the sound signal amplitude value, the whole process is divided into two stages: the collision of the electromagnet core and the collision of the buffer after the moving contact is inserted into place. According to the cumulative curve of the circuit breaker closing sound signal energy, the difference between the cumulative energy at the end point of the energy cumulative curve and the cumulative energy at the turning point is calculated, and the difference is the buffer collision sound energy.

[0065] Step 103, calculating the closing speed according to the buffer collision sound energy.

[0066] In this embodiment, the closing speed is calculated according to the closing constant of the high-voltage circuit breaker and the accumulated energy difference, and the calculation formula of the closing speed is: Among them, v c is the circuit breaker closing speed, E 2 is the energy of the buffer collision sound, and K is the closing constant of the high-voltage circuit breaker. Among them, for the same model of circuit breaker, it is only necessary to install a travel sensor and a sound sensor at the factory to measure and calculate the K value. Later, the closing speed of the circuit breaker can be calculated by measuring the soundprint signal and then using the above formula, that is, the closing constant K is only related to the model of the circuit breaker.

[0067] The embodiment of the present application obtains the sound signal of the closing of the high-voltage circuit breaker and obtains the collision energy of the closing buffer according to the sound signal, thereby realizing the calculation of the closing speed, avoiding direct contact with the circuit breaker body when calculating the closing speed of the circuit breaker, significantly improving the convenience while reducing the maintenance cost, and being of great help for the fault diagnosis of the circuit breaker.

[0068] Figure 2 is a flow chart of a high-voltage circuit breaker closing speed estimation method based on sound signal characteristics according to an embodiment of the present disclosure, such as Figure 2 As shown, step 101 includes the following steps:

[0069] Step 201, installing a sound sensor outside the high-voltage circuit breaker, wherein the sensor is facing the closing spring.

[0070] In this embodiment, a sound sensor needs to be installed outside the closing spring of the high-voltage circuit breaker to receive the sound signal during the collision. When placed, the sound sensor is facing the closing spring, and some soft objects can be selected to protect the sensor, such as wrapping it with a sponge pad, so as to avoid bumps or reduce other interference. When selecting the placement of the sound sensor, factors such as wiring interference should be considered to find the final placement position that best receives the sound signal.

[0071] In this embodiment, the sound sensor may be of type 378B02.

[0072] Step 202: Acquire a sound signal of a circuit breaker component collision according to the sound sensor.

[0073] In this embodiment, the sound signal of the collision process of the circuit breaker components is received according to the installed sound sensor, and the waveform of the circuit breaker closing sound signal can be drawn, and the amplitude value of the sound signal is observed during the collision process.

[0074] The embodiment of the present application obtains the sound signal of the high-voltage circuit breaker by installing a sound sensor next to the high-voltage circuit breaker, and collects the sound signal without contacting the circuit breaker body, thereby avoiding direct contact with the circuit breaker body when calculating the closing speed of the circuit breaker, thereby significantly improving convenience and reducing maintenance costs.

[0075] Figure 3 is a flow chart of a high-voltage circuit breaker closing speed estimation method based on sound signal characteristics according to an embodiment of the present disclosure, such as Figure 3 As shown, step 102 includes the following steps:

[0076] Step 301: define the square value of the amplitude of the sound signal collected by the sound sensor as the sound signal energy.

[0077] In this embodiment, the square value of the sound signal amplitude collected by the sound sensor is defined as the sound signal energy, and the sound signal energy is expressed by a numerical value.

[0078] Step 302: draw an energy accumulation curve of the sound signal energy.

[0079] In this embodiment, an energy accumulation curve of the sound signal energy is drawn to represent the total energy of the sound signal up to a certain moment.

[0080] Step 303, obtaining the accumulated energy at the turning point of the energy accumulation curve.

[0081] In this embodiment, the energy accumulation curve of the sound signal energy is observed to obtain the accumulated energy at the turning point of the curve.

[0082] Step 304, obtaining the accumulated energy at the end point of the energy accumulation curve.

[0083] In this embodiment, the energy accumulation curve of the sound signal energy is observed to obtain the accumulated energy at the end point of the curve.

[0084] Step 305, calculating the difference between the accumulated energy at the end point of the energy accumulation curve and the accumulated energy at the turning point, wherein the difference is the buffer collision sound energy.

[0085] In this embodiment, the buffer collision sound energy is obtained by obtaining the difference between the accumulated energy at the turning point of the energy accumulation curve and the accumulated energy at the end point of the energy accumulation curve.

[0086] The embodiment of the present application defines the square of the sound signal amplitude value as the sound signal energy, thereby realizing the quantification of the sound signal energy. Subsequently, the buffer collision sound energy is obtained by plotting the cumulative energy of the sound signal and obtaining the cumulative energy at the turning point and the end point.

[0087] Figure 4 is a flow chart of a high-voltage circuit breaker closing speed estimation method based on sound signal characteristics according to an embodiment of the present disclosure, such as Figure 4 As shown, step 103 includes the following steps:

[0088] Step 401, obtaining the closing constant of the high-voltage circuit breaker.

[0089] In this embodiment, the closing constant of the high-voltage circuit breaker depends only on the model of the high-voltage circuit breaker. The closing constant can be measured by installing a travel sensor and a sound sensor at the factory. The calculation formula of the closing constant is K=E 2 / v c 2 , where v c is the circuit breaker closing speed, E 2 is the buffer collision sound energy, and K is the closing constant of the high-voltage circuit breaker.

[0090] Step 402, calculating the closing speed according to the closing constant of the high-voltage circuit breaker and the accumulated energy difference, the calculation formula of the closing speed is: Among them, v c is the circuit breaker closing speed, E 2 is the buffer collision sound energy, and K is the closing constant of the high-voltage circuit breaker.

[0091] In this embodiment, according to the obtained closing constant K and buffer collision energy E 2 , bring into the closing speed calculation formula: The closing speed v can be obtained c .

[0092] The embodiment of the present application realizes the calculation of the closing speed through the closing constant of the high-voltage circuit breaker and the collision energy of the buffer, which significantly improves the convenience and can reduce the use and maintenance costs.

[0093] Figure 5 is a block diagram of a high-voltage circuit breaker closing speed estimation device 500 based on sound signal characteristics according to an embodiment of the present disclosure. Figure 5The device includes a signal acquisition module 510, an energy calculation module 520 and a speed calculation module 530.

[0094] A signal acquisition module 510 is used to obtain a sound signal of a high-voltage circuit breaker closing;

[0095] An energy calculation module 520, for calculating the buffer collision sound energy according to the sound signal;

[0096] The speed calculation module 530 is used to calculate the closing speed according to the buffer collision sound energy.

[0097] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0098] like Figure 6 As shown, in the embodiment of the present disclosure, the signal acquisition module 510 includes a sensor submodule 511 and a signal acquisition submodule 512 .

[0099] The sensor submodule 511 is composed of a sound sensor installed at the high-voltage circuit breaker;

[0100] The signal acquisition submodule 512 is used to obtain the sound signal of the collision of the circuit breaker components according to the sound sensor.

[0101] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0102] like Figure 7 As shown, in the embodiment of the present disclosure, the energy calculation module 520 includes a definition module 521, a curve acquisition module 522, a first energy acquisition submodule 523, a second energy acquisition submodule 524 and a calculation submodule 525.

[0103] A definition module 521, used to define the square value of the amplitude of the sound signal collected by the sound sensor as the sound signal energy;

[0104] A curve acquisition module 522, used for drawing an energy accumulation curve of the sound signal energy;

[0105] A first energy acquisition submodule 523 is used to acquire the accumulated energy at the turning point of the energy accumulation curve;

[0106] A second energy acquisition submodule 524 is used to acquire the accumulated energy at the end point of the energy accumulation curve;

[0107] The calculation submodule 525 is used to calculate the difference between the accumulated energy at the end point of the energy accumulation curve and the accumulated energy at the turning point.

[0108] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0109] like Figure 8 As shown, in the embodiment of the present disclosure, the speed calculation module 530 includes a constant acquisition module 531 and a speed calculation submodule 532 .

[0110] A constant acquisition module 531, used to acquire a closing constant of the high voltage circuit breaker;

[0111] The speed calculation submodule 532 is used to calculate the closing speed according to the closing constant of the high-voltage circuit breaker and the accumulated energy difference. The calculation formula of the closing speed is: Among them, v c is the circuit breaker closing speed, E 2 is the buffer collision sound energy, and K is the closing constant of the high-voltage circuit breaker.

[0112] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0113] Fig. 9 A schematic block diagram of an example electronic device 900 that can be used to implement an embodiment of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or required herein.

[0114] like Fig. 9 As shown, the device 900 includes a computing unit 901, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 902 or a computer program loaded from a storage unit 908 into a random access memory (RAM) 903. In the RAM 903, various programs and data required for the operation of the device 900 can also be stored. The computing unit 901, the ROM 902, and the RAM 903 are connected to each other via a bus 904. An input / output (I / O) interface 905 is also connected to the bus 904.

[0115] A number of components in the device 900 are connected to the I / O interface 905, including: an input unit 906, such as a keyboard, a mouse, etc.; an output unit 907, such as various types of displays, speakers, etc.; a storage unit 908, such as a disk, an optical disk, etc.; and a communication unit 909, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 909 allows the device 900 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0116] The computing unit 901 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 901 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc.

[0117] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0118] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0119] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0120] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0121] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), the Internet, and a blockchain network.

[0122] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship between the client and the server is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services ("Virtual Private Server", or "VPS" for short). The server may also be a server of a distributed system, or a server combined with a blockchain.

[0123] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0124] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for estimating closing speed of a high-voltage circuit breaker based on sound signal characteristics, characterized in that: include: Obtain the sound signal of high-voltage circuit breaker closing; Calculating the buffer collision sound energy based on the sound signal; Calculate the closing speed based on the sound energy of the buffer collision; The step of calculating the buffer collision sound energy according to the sound signal comprises: The square value of the amplitude of the sound signal collected by the sound sensor is defined as the sound signal energy; Draw an energy accumulation curve of the sound signal energy; Obtaining the accumulated energy at the turning point of the energy accumulation curve; Obtaining the accumulated energy at the end point of the energy accumulation curve; Calculating the difference between the accumulated energy at the end point of the energy accumulation curve and the accumulated energy at the turning point, wherein the difference is the buffer collision sound energy; The calculating the closing speed according to the buffer collision sound energy comprises: Obtaining a closing constant of the high-voltage circuit breaker; The closing speed is calculated according to the closing constant and the accumulated energy difference of the high-voltage circuit breaker, and the calculation formula of the closing speed is: Among them, v c is the closing speed of the circuit breaker, E2 is the energy of the buffer collision sound, and K is the closing constant of the high-voltage circuit breaker.

2. The method according to claim 1, characterized in that The step of obtaining a sound signal of a high-voltage circuit breaker closing includes: Install a sound sensor outside the high-voltage circuit breaker, with the sensor facing the closing spring; The sound sensor is used to obtain a sound signal of a circuit breaker component collision.

3. A high-voltage circuit breaker closing speed estimation device based on sound signal characteristics, comprising: A signal acquisition module, used to obtain the sound signal of the high-voltage circuit breaker closing; an energy calculation module, used to calculate the buffer collision sound energy according to the sound signal; A speed calculation module, used for calculating the closing speed according to the energy of the buffer collision sound; The energy calculation module comprises: A definition module, used for defining the square value of the amplitude of the sound signal collected by the sound sensor as the sound signal energy; A curve acquisition module, used for drawing an energy accumulation curve of the sound signal energy; A first energy acquisition submodule, used to acquire the accumulated energy at the turning point of the energy accumulation curve; A second energy acquisition submodule is used to acquire the accumulated energy at the end point of the energy accumulation curve; A calculation submodule, used for calculating the difference between the accumulated energy at the end point of the energy accumulation curve and the accumulated energy at the turning point; The speed calculation module further includes: A constant acquisition module, used to obtain a closing constant of the high-voltage circuit breaker; The speed calculation submodule is used to calculate the closing speed according to the closing constant and the accumulated energy difference of the high-voltage circuit breaker, and the calculation formula of the closing speed is: Among them, v c is the closing speed of the circuit breaker, E2 is the energy of the buffer collision sound, and K is the closing constant of the high-voltage circuit breaker.

4. The device according to claim 3, characterized in that The signal acquisition module comprises: A sensor submodule, which consists of a sound sensor installed outside the high-voltage circuit breaker; The signal acquisition submodule is used to obtain the sound signal of the collision of the circuit breaker components according to the sound sensor.

5. An electronic device comprising: at least one processor; and a memory communicatively coupled to the at least one processor; The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method according to any one of claims 1 to 2.

6. A non-transitory computer-readable storage medium storing computer instructions, wherein: The computer instructions are used to cause the computer to execute the method according to any one of claims 1-2.

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