A mutual inductor detection device resonance positioning method and system

Abstract

The application provides a mutual inductor detection device resonance positioning method and system, the method comprises: obtaining the spatial position parameters of a plurality of resonance response sensors arranged on the mutual inductor detection device; when a large current flows through the primary loop of the mutual inductor detection device, obtaining the sound intensity response signals collected by the plurality of resonance response sensors to generate multi-point sound intensity data; determining whether the preset resonance threshold is exceeded based on the multi-point sound intensity data, and outputting a resonance warning information when the preset resonance threshold is exceeded; calculating the relative distance between each resonance response sensor and the resonance point based on the multi-point sound intensity data and the spatial position parameters, and determining the estimated position of the resonance point based on the relative distance and the spatial position parameters. The technical scheme of the application realizes online identification of the electromagnetic-mechanical resonance risk of the mutual inductor detection device, improves the resonance point positioning efficiency and fault troubleshooting accuracy.

Description

Technical Field

[0001] This invention belongs to the field of electrical energy metering and testing technology, specifically relating to a resonance positioning method and system for a current transformer testing device. Background Technology

[0002] In low-voltage AC distribution networks, direct measurement of large currents is difficult. Therefore, low-voltage current transformers are used to expand the metering capacity of energy meters. To ensure measurement accuracy, the transformers need to be tested before use. In the field of power metering and equipment verification, transformer testing devices typically perform performance testing on the transformer under test under conditions of high current applied to the primary circuit. During this process, the conductors and structural components inside the device are prone to generating electromagnetic forces under the action of an alternating magnetic field, which can lead to mechanical vibration and local resonance. With the increasing structural complexity and functional modules of transformer testing devices, differences in internal metal connectors, support structures, and installation methods can further alter the distribution of electromagnetic forces and the natural frequency of the structure, making resonance problems more likely to occur during operation.

[0003] In existing technologies, resonance problems in current transformer detection devices are often prevented by avoiding the inherent frequency range during the design phase, structural reinforcement, or empirical adjustments. Alternatively, abnormal vibrations or noises can be identified during operation through methods such as manual listening and routine inspections. In some scenarios, single-point sensors can also be used to monitor vibrations or noise to assist in identifying abnormal conditions.

[0004] However, the above-mentioned technical solutions still have shortcomings: on the one hand, the avoidance methods based on the design stage are difficult to adapt to the changes in resonance characteristics caused by the adjustment of the device structure or changes in operating conditions, and lack the ability to dynamically perceive the operation process; on the other hand, the methods based on manual experience or single-point monitoring are difficult to accurately determine the resonance phenomenon, and are difficult to reflect the differences in the spatial distribution of resonance, making it difficult to quickly determine the resonance location; in addition, under the conditions of sporadic vibration and complex structure, the existing methods lack effective means to characterize the degree of resonance and its changing trend, which affects the efficiency of subsequent fault diagnosis.

[0005] Therefore, there is an urgent need for a resonance location method for current transformer detection devices to improve the ability to identify resonance risks during the operation of current transformer detection devices and to improve the efficiency of determining resonance locations. Summary of the Invention

[0006] This invention provides a resonance positioning method for a current transformer detection device. The method constructs a resonance positioning processing mechanism based on multi-point resonance response data and spatial position parameters. During the flow of a large current in the primary circuit of the current transformer detection device, resonance response signals are acquired and multi-point sound intensity data is generated. Based on the multi-point sound intensity data, a threshold is determined, and a resonance alarm is triggered when the threshold is exceeded. The estimated location of the resonance point is determined based on the multi-point sound intensity data and the spatial position parameters. This method addresses the technical problems of resonance risk identification and resonance point positioning during the operation of the current transformer detection device.

[0007] A first aspect of the present invention provides a resonance positioning method for a current transformer detection device, the method comprising: Acquire the spatial position parameters of multiple resonance response sensors installed on the current transformer detection device; When a large current flows through the primary circuit of the current transformer detection device, the sound intensity response signals collected by the multiple resonance response sensors are acquired to generate multi-point sound intensity data; based on the multi-point sound intensity data, it is determined whether the preset resonance threshold is exceeded. In response to the multi-point sound intensity data exceeding the preset resonance threshold, a resonance alarm message is output. Based on the multi-point sound intensity data and the spatial position parameters, the relative distance between each resonance response sensor and the resonance point is calculated. The estimated location of the resonance point is determined based on the relative distance and the spatial location parameters.

[0008] By adopting the above scheme, the resonance positioning method of the current transformer detection device of the present invention acquires the spatial position parameters of multiple resonance response sensors installed on the current transformer detection device and acquires multi-point sound intensity data during the flow of a large current in the primary circuit, thereby realizing the collection of resonance response information during the operation of the device; by performing threshold determination based on the multi-point sound intensity data, the trigger identification of resonance risk is realized; furthermore, by determining the estimated position of the resonance point based on the multi-point sound intensity data and the spatial position parameters, the location of the resonance occurrence is realized, significantly improving the resonance risk identification capability and resonance point positioning accuracy of the current transformer detection device.

[0009] In some embodiments of the present invention, the plurality of resonance response sensors include five high-sensitivity sound level meters; the five high-sensitivity sound level meters are fixedly disposed at a designated position of the current transformer detection device; the spatial position parameters include the three-dimensional coordinate parameters of each high-sensitivity sound level meter relative to a preset origin.

[0010] In some embodiments of the present invention, the spatial arrangement of the five high-sensitivity sound level meters satisfies the condition that any four of the high-sensitivity sound level meters are not coplanar.

[0011] In some embodiments of the present invention, determining whether a preset resonance threshold is exceeded based on the multi-point sound intensity data includes: determining the sound intensity value corresponding to each resonance response sensor; obtaining the maximum value among the sound intensity values; and determining whether the maximum value is greater than the preset resonance threshold.

[0012] In some embodiments of the present invention, after the multi-point sound intensity data exceeds the preset resonance threshold, determining the estimated location of the resonance point includes: calculating the relative distance between each resonance response sensor and the resonance point based on the multi-point sound intensity data and the spatial location parameters; wherein the calculation of the relative distance uses one of the resonance response sensors as the reference sensor.

[0013] In some embodiments of the present invention, determining the estimated location of the resonance point based on the relative distance and the spatial position parameters includes: dividing the plurality of resonance response sensors into a first sensor group and a second sensor group; calculating the distance between the resonance point and the sound level meter 1 based on the relative distance corresponding to the first sensor group and the spatial position parameters, and using it as a reference distance; and calculating the estimated coordinates of the first resonance point based on the reference distance.

[0014] In some embodiments of the present invention, determining the estimated location of the resonance point based on the relative distance and the spatial position parameters further includes: calculating the estimated coordinates of the second resonance point based on the relative distance and spatial position parameters corresponding to the second sensor group; and calculating the estimated acoustic power of the resonance point based on the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point.

[0015] In some embodiments of the present invention, determining the estimated location of the resonance point includes: Determine whether the reference distance exceeds the preset distance range; In response to the reference distance being within a preset distance range, a resonance state determination is performed based on the estimated sound power. When the preset resonance condition is met, the reference distance and the number of positioning rounds are updated, and the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point are recalculated based on the updated reference distance and the number of positioning rounds. In response to the reference distance exceeding the preset distance range, the iteration is terminated and the coordinates corresponding to the minimum distance between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point are taken as the estimated position of the resonance point.

[0016] In some embodiments of the present invention, taking the coordinates corresponding to the minimum point of the distance between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point as the estimated position of the resonance point includes: calculating the distance between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point in each positioning round, comparing each distance, and determining the target positioning round corresponding to the minimum distance; taking the coordinates corresponding to the minimum point of the target positioning round as the estimated position of the resonance point.

[0017] Compared with existing technologies, the advantages of this invention are as follows: By constructing a processing flow consisting of multi-point sound intensity data acquisition, threshold determination, and resonance point localization, this invention achieves continuous acquisition of resonance response information of the current transformer detection device during high-current operation; by determining the maximum value of multi-point sound intensity data, it achieves effective identification of resonance triggering state; furthermore, by using a multi-sensor collaborative calculation mechanism based on relative distance, it spatially characterizes the resonance response and determines the estimated location of the resonance point; by jointly processing the calculation results of different sensor groups and introducing an estimated sound power determination and localization cycle update mechanism, it achieves gradual correction of the resonance point estimation results, significantly improving the stability and accuracy of resonance point localization.

[0018] A second aspect of the present invention provides a resonance positioning system for a current transformer detection device, the system comprising a current transformer detection device, a plurality of resonance response sensors and a resonance diagnostic module; The plurality of resonance response sensors are mounted on the mutual inductor detection device; The resonance diagnostic module includes: A position parameter acquisition unit is used to acquire the spatial position parameters of the plurality of resonance response sensors; The data acquisition unit is used to acquire the sound intensity response signals collected by the multiple resonance response sensors during the process of a large current flowing through the primary circuit of the current transformer detection device, and generate multi-point sound intensity data. A threshold determination unit is used to determine whether the preset resonance threshold is exceeded based on the multi-point sound intensity data. An alarm unit is used to output resonance alarm information in response to the multi-point sound intensity data exceeding the preset resonance threshold. The distance calculation unit is used to calculate the relative distance between each resonance response sensor and the resonance point based on the multi-point sound intensity data and the spatial position parameters. The positioning unit is used to determine the estimated location of the resonance point based on the relative distance and the position parameters.

[0019] Additional advantages, objects, and features of the invention will be set forth in part in the description which follows, and will also become apparent in part to those skilled in the art upon studying the text, or may be learned by practice of the invention. The objects and other advantages of the invention will become apparent from the description and the accompanying drawings.

[0020] Those skilled in the art will understand that the objectives and advantages achievable with the present invention are not limited to those specifically described above, and that the above and other objectives achievable with the present invention will become clearer from the following detailed description. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] In the attached diagram: Figure 1 This is a flowchart illustrating a resonance positioning method for a current transformer detection device provided in an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of a resonance positioning system for a mutual inductor detection device provided in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0026] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0027] This invention addresses the magnetic-mechanical resonance risk present in existing low-voltage transformer testing devices by providing a method for locating resonance during transformer testing. Before or during transformer calibration, the method monitors the risk of magnetic-mechanical resonance caused by the alternating magnetic field excited by the test current. If the resonance amplitude exceeds a threshold, an alarm is immediately triggered, and the approximate range of the strongest resonance point is automatically located. This facilitates subsequent maintenance measures, thereby improving the safety and reliability of the low-voltage transformer testing device.

[0028] Figure 1This is a schematic flowchart of a resonance positioning method for a mutual inductor detection device according to an embodiment of the present invention.

[0029] Example 1, as Figure 1 As shown, the present invention provides a resonance positioning method for a current transformer detection device, the method comprising the following steps: Acquire the spatial position parameters of multiple resonance response sensors installed on the current transformer detection device; When a large current flows through the primary circuit of the current transformer detection device, the sound intensity response signals collected by the multiple resonance response sensors are acquired to generate multi-point sound intensity data; based on the multi-point sound intensity data, it is determined whether the preset resonance threshold is exceeded. In response to the multi-point sound intensity data exceeding the preset resonance threshold, a resonance alarm message is output. Based on the multi-point sound intensity data and the spatial position parameters, the relative distance between each resonance response sensor and the resonance point is calculated. The estimated location of the resonance point is determined based on the relative distance and the spatial location parameters.

[0030] The resonance positioning method of the current transformer detection device in this embodiment is applied to the operation of the current transformer detection device under the condition of applying a large current in the primary circuit.

[0031] Specifically, multiple resonance response sensors are pre-installed on the current transformer detection device, and the spatial position parameters of each resonance response sensor relative to the preset origin are obtained.

[0032] During the process of a large current flowing through the primary circuit of the current transformer detection device, the conductor generates electromagnetic force under the action of an alternating magnetic field, which excites the device structure to vibrate and resonate. Multiple resonance response sensors collect the sound intensity response signals at different locations of the device and generate corresponding multi-point sound intensity data.

[0033] Based on the multi-point sound intensity data, a threshold is determined. When the sound intensity value of the largest sound intensity data exceeds the preset resonance threshold, it is determined that the current device has a resonance risk and a resonance alarm message is output.

[0034] After triggering the resonance alarm, the relative distance between each resonance response sensor and the resonance point is calculated based on the multi-point sound intensity data and the spatial position parameters, and the estimated position of the resonance point is further determined based on the relative distance and the spatial position parameters.

[0035] By adopting the above scheme, the resonance positioning method of the current transformer detection device of the present invention acquires the spatial position parameters of multiple resonance response sensors installed on the current transformer detection device and acquires multi-point sound intensity data during the flow of a large current in the primary circuit, thereby realizing the collection of resonance response information during the operation of the device; by performing threshold determination based on the multi-point sound intensity data, the trigger identification of resonance risk is realized; furthermore, by determining the estimated position of the resonance point based on the multi-point sound intensity data and the spatial position parameters, the location of the resonance occurrence is realized, significantly improving the resonance risk identification capability and resonance point positioning accuracy of the current transformer detection device.

[0036] In some embodiments of the present invention, the plurality of resonance response sensors include n (n is an integer) high-sensitivity sound level meters; the n high-sensitivity sound level meters are fixedly disposed at a designated position of the current transformer detection device; the spatial position parameters include the three-dimensional coordinate parameters of each high-sensitivity sound level meter relative to a preset origin.

[0037] In some embodiments of the present invention, the spatial arrangement of the n high-sensitivity sound level meters satisfies the condition that any n-1 high-sensitivity sound level meters are not coplanar.

[0038] In this embodiment, the plurality of resonance response sensors specifically include five high-sensitivity sound level meters. Before the current transformer detection device starts working, the five high-sensitivity sound level meters are numbered and fixed at designated positions on the current transformer detection device.

[0039] Each sound level meter is used to collect the decibel value at the corresponding location as a source of sound intensity response data.

[0040] The spatial position parameters are the three-dimensional coordinate parameters of each sound level meter relative to a preset origin.

[0041] Furthermore, the spatial arrangement of the five high-sensitivity sound level meters satisfies the condition that any four sound level meters are not coplanar, thereby ensuring the ability to locate resonance points in three-dimensional space.

[0042] Specifically, measure the three-dimensional coordinates of each sound level meter relative to the origin (the coordinate axes can be selected as a Cartesian coordinate system, and the origin can be chosen arbitrarily, but generally a point that is easy to measure, such as the midpoint of the reference plane, is chosen), and record the... i The coordinates of each sound level meter are [ x i y i z i ] T Ensure that no four of the sound level meters are coplanar (as shown in the following formula);

[0043] Next, the current transformer is connected in series with the primary conductor to complete the primary circuit contact crimping, and the secondary circuit is then connected. With a large current flowing through the primary circuit, the sound level meter begins to continuously monitor the device noise.

[0044] In some embodiments of the present invention, determining whether a preset resonance threshold is exceeded based on the multi-point sound intensity data includes: determining the sound intensity value corresponding to each resonance response sensor; obtaining the maximum value among the sound intensity values; and determining whether the maximum value is greater than the preset resonance threshold.

[0045] In this embodiment, the threshold determination specifically includes: Obtain the acoustic intensity value Si corresponding to each resonance response sensor; Calculate the maximum value max(Si) among all sound intensity values; Determine whether max(Si) is greater than the preset resonance threshold Sth.

[0046] When max(Si) > Sth, the device is determined to have a resonance risk and proceeds to the subsequent resonance point location process.

[0047] Specifically, determine whether max(Si)>Sth holds true, where Si is the decibel level recorded by the i-th sound level meter; Sth is the noise threshold, which is provided by the manufacturer or obtained by averaging multiple tests under the premise of ensuring no resonance.

[0048] If max(Si)>Sth is satisfied, an alarm signal is issued (as a preferred technical solution, the corresponding number of light flashing or buzzer alarm can be used), and resonance point positioning begins; In some embodiments of the present invention, after the multi-point sound intensity data exceeds the preset resonance threshold, determining the estimated location of the resonance point includes: calculating the relative distance between each resonance response sensor and the resonance point based on the multi-point sound intensity data and the spatial location parameters; wherein the calculation of the relative distance uses one of the resonance response sensors as the reference sensor.

[0049] In this embodiment, after the resonance alarm is triggered, the relative distance between each resonance response sensor and the resonance point is calculated based on multi-point sound intensity data and spatial position parameters.

[0050] Specifically, using one of the sound level meters as a reference sensor, a correspondence between sound intensity and distance is established based on the sound intensity differences between the various sound level meters, thereby determining the relative distance of each sensor to the resonance point.

[0051] Calculate the relative distance between each sound level meter and the resonance point using the following formula (as a preferred technical solution, for example, the following formula uses sound level meter No. 1 as the reference).

[0052]

[0053] In some embodiments of the present invention, determining the estimated location of the resonance point based on the relative distance and the spatial position parameters includes: dividing the plurality of resonance response sensors into a first sensor group and a second sensor group; calculating the distance between the resonance point and the sound level meter 1 based on the relative distance corresponding to the first sensor group and the spatial position parameters, and using it as a reference distance; and calculating the estimated coordinates of the first resonance point based on the reference distance.

[0054] Furthermore, in this embodiment, the plurality of resonant response sensors are divided into a first sensor group and a second sensor group.

[0055] 1) Record n ←0, let the coordinates of the resonance point be (x r0 , y r0 , z r0 The initial value of the distance between the resonance point and sound level meter 1 (as the reference distance) is... p 10 Solve using the following matrix operations: ; 2) For example, select high-sensitivity sound level meters 1, 2, 3, and 4 to form group I, and let the coordinates of the resonance point be ( x rIn , y rIn , z rIn The solution is obtained through the following matrix operations:

[0056] 3) For example, select high-sensitivity sound level meters 1, 2, 3, and 5 to form group II, and set the coordinates of the resonance point as ( x rIIn , y rIIn , z rIIn The solution is obtained through the following matrix operations:

[0057] 4) Let n←n+1, ρ1n←(-1)nΔρ1(n)+ρ10, and determine whether the following conditions hold true: ρ1n<ρ1max and ρ1n>ρ1min. If yes, proceed to the next step; otherwise, return to step 2). Δρ1(n) is a monotonically non-increasing function of the variable n. The limit values ​​ρ1max and ρ1min are the farthest and closest distances, respectively, between the metal parts of the calibration device and the No. 1 high-sensitivity sound level meter group. These distances can be obtained through on-site measurement. 5) Take p 2 I-IIn=( x rIIn - x rIn ) 2 + ( y rIIn - y rIn ) 2 + ( z rIIn - z rIn ) 2 minimum point n min The resonance point should be located at: ; 6) After obtaining the estimated coordinates of the first resonance point and the second resonance point, calculate the estimated acoustic power of the resonance point based on the two sets of estimated coordinates to reflect the current resonance intensity.

[0058] The formula for estimating the acoustic power at the resonance point is:

[0059] In some embodiments of the present invention, determining the estimated location of the resonance point includes: Determine whether the reference distance exceeds the preset distance range; In response to the reference distance being within a preset distance range, a resonance state determination is performed based on the estimated sound power. When the preset resonance condition is met, the reference distance and the number of positioning rounds are updated, and the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point are recalculated based on the updated reference distance and the number of positioning rounds. In response to the reference distance exceeding the preset distance range, the iteration is terminated and the coordinates corresponding to the minimum distance difference between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point are taken as the estimated position of the resonance point.

[0060] In this embodiment, the positioning result is corrected based on the reference distance. When the reference distance is within a preset distance range, the distance difference between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point is calculated, and the coordinates corresponding to the point with the minimum distance are taken as the estimated position of the resonance point.

[0061] In some embodiments of the present invention, taking the coordinates corresponding to the minimum point of the distance between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point as the estimated position of the resonance point includes: calculating the distance between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point in each positioning round; comparing each distance difference to determine the target positioning round corresponding to the minimum distance; and taking the coordinates corresponding to the minimum point of the target positioning round as the estimated position of the resonance point.

[0062] In this embodiment, the process of determining the minimum point specifically includes: Calculate the distance difference between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point under different positioning rounds; Compare the distance differences corresponding to each round to determine the target positioning round corresponding to the minimum distance difference; The coordinates corresponding to the minimum point of the target positioning cycle are used as the final estimated position of the resonance point.

[0063] Furthermore, to judge P r > P th If true, update the reference distance assignment for the resonance point. p refn ← p ref0n-1 +Δ p ref0 and update the round. n ← n +1, repeat steps 1)-6), otherwise proceed to the next step; Pick p I-IIn minimum point n min The resonance point should be located at:

[0064] Otherwise, remain silent until the current transformer calibration / test is completed.

[0065] Compared with the prior art, the beneficial effects of the present invention are as follows: During the current transformer calibration process, this solution utilizes multiple resonance response sensors to monitor the sound intensity of the device in real time and determines whether resonance has occurred based on the sound intensity characteristics. When the resonance level exceeds the threshold, an alarm can be issued immediately and a response can be triggered. This allows for timely prevention of resonance from developing further and causing sudden equipment failures without affecting the original current transformer calibration efficiency or requiring repeated personnel trips to the site. Furthermore, it can effectively mitigate resonance risks even after the calibration conditions change.

[0066] This solution uses multiple sensors to collect and interactively verify the resonance response, which can effectively avoid the problem of measurement results failure due to the damage of individual sound level meters, improve the reliability of resonance state determination results, and reduce the risk of overall equipment damage or even personal injury due to inaccurate equipment status assessment or untimely power outage.

[0067] After detecting resonance risk, this solution further utilizes the sound intensity recorded by the sound level meter group and a distance-based multi-point positioning algorithm to estimate the location of the resonance point without prior knowledge of the vibration intensity. This avoids the problem of fruitless manual maintenance or long hours of waiting due to the intermittent nature of resonance, reduces equipment maintenance time and labor costs, reduces the necessity of comprehensive troubleshooting, and facilitates maintenance personnel to carry out subsequent maintenance work in a planned manner.

[0068] Figure 2 This is a schematic flowchart of a resonant positioning system for a mutual inductor detection device according to an embodiment of the present invention.

[0069] Example 2, as Figure 2 As shown, the present invention also provides a resonance positioning system for a current transformer detection device, including a current transformer detection device S11, a plurality of resonance response sensors S12 and a resonance diagnostic module S13; the plurality of resonance response sensors S12 are disposed on the current transformer detection device S11. The resonance diagnostic module S13 includes: The position parameter acquisition unit S131 is used to acquire the spatial position parameters of the plurality of resonance response sensors; The data acquisition unit S132 is used to acquire the sound intensity response signals collected by the multiple resonance response sensors during the process of a large current flowing through the primary circuit of the current transformer detection device, and generate multi-point sound intensity data. The threshold determination unit S133 is used to determine whether the preset resonance threshold is exceeded based on the multi-point sound intensity data. Alarm unit S134 is used to output resonance alarm information in response to the multi-point sound intensity data exceeding the preset resonance threshold; The distance calculation unit S135 is used to calculate the relative distance between each resonance response sensor and the resonance point based on the multi-point sound intensity data and the spatial position parameters. The positioning unit S136 is used to determine the estimated position of the resonance point based on the relative distance and the position parameters.

[0070] Example 3, as Figure 3 As shown, the present invention also provides an electronic device 100 for implementing the resonance positioning method of a mutual inductor detection device.

[0071] The electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on at least one processor 102, and at least one communication bus 104.

[0072] The memory 101 can be used to store the computer program 103. The processor 102 implements the steps of the resonant positioning method of the mutual inductor detection device described in the first aspect of the present invention by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101.

[0073] The memory 101 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created based on the use of the electronic device 100 (such as audio data), etc. In addition, the memory 101 may include non-volatile memory, such as hard disk, RAM, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0074] At least one processor 102 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 102 may be a microprocessor or any conventional processor. Processor 102 is the control center of electronic device 100, connecting various parts of electronic device 100 via various interfaces and lines.

[0075] The memory 101 in the electronic device 100 stores multiple instructions to implement a resonance positioning method for a mutual inductor detection device, and the processor 102 can execute multiple instructions to achieve the following: Acquire the spatial position parameters of multiple resonance response sensors installed on the current transformer detection device; When a large current flows through the primary circuit of the current transformer detection device, the sound intensity response signals collected by the multiple resonance response sensors are acquired to generate multi-point sound intensity data; based on the multi-point sound intensity data, it is determined whether the preset resonance threshold is exceeded. In response to the multi-point sound intensity data exceeding the preset resonance threshold, a resonance alarm message is output. Based on the multi-point sound intensity data and the spatial position parameters, the relative distance between each resonance response sensor and the resonance point is calculated. The estimated location of the resonance point is determined based on the relative distance and the spatial location parameters.

[0076] Example 5: If the modules / units integrated in the electronic device 100 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, and read-only memory (ROM).

[0077] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0078] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0079] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0080] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0081] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A resonance positioning method for a current transformer detection device, characterized in that, The method includes the following steps: Acquire the spatial position parameters of multiple resonance response sensors installed on the current transformer detection device; When a large current flows through the primary circuit of the current transformer detection device, the sound intensity response signals collected by the multiple resonance response sensors are acquired to generate multi-point sound intensity data; based on the multi-point sound intensity data, it is determined whether the preset resonance threshold is exceeded. In response to the multi-point sound intensity data exceeding the preset resonance threshold, a resonance alarm message is output. Based on the multi-point sound intensity data and the spatial position parameters, the relative distance between each resonance response sensor and the resonance point is calculated. The estimated location of the resonance point is determined based on the relative distance and the spatial location parameters.

2. The resonance positioning method of the transformer detection device according to claim 1, characterized in that, The plurality of resonance response sensors includes n high-sensitivity sound level meters; The n high-sensitivity sound level meters are fixedly installed at designated positions on the current transformer detection device; The spatial position parameters include the three-dimensional coordinate parameters of each high-sensitivity sound level meter relative to a preset origin.

3. The resonance positioning method of the transformer detection device according to claim 2, characterized in that, The spatial arrangement of the n high-sensitivity sound level meters satisfies the condition that any n-1 high-sensitivity sound level meters are not coplanar.

4. The resonance positioning method of the transformer detection device according to claim 1, characterized in that, The step of determining whether the preset resonance threshold is exceeded based on the multi-point sound intensity data includes: Determine the acoustic intensity value corresponding to each resonance response sensor; Obtain the maximum value among the sound intensity values; Determine whether the maximum value is greater than a preset resonance threshold.

5. The resonance positioning method of the current transformer detection device according to claim 4, characterized in that, After the multi-point sound intensity data exceeds the preset resonance threshold, determining the estimated location of the resonance point includes: Based on the multi-point sound intensity data and the spatial position parameters, the relative distance between each resonance response sensor and the resonance point is calculated; wherein, the calculation of the relative distance uses one of the resonance response sensors as the reference sensor.

6. The resonance positioning method of the current transformer detection device according to claim 5, characterized in that, Determining the estimated location of the resonance point based on the relative distance and the spatial location parameters includes: The plurality of resonant response sensors are divided into a first sensor group and a second sensor group; Based on the relative distances corresponding to the first sensor group and the spatial position parameters, the distance between the resonance point and the sound level meter 1 is calculated and used as a reference distance. The estimated coordinates of the first resonance point are calculated based on the reference distance.

7. The resonance positioning method of the current transformer detection device according to claim 6, characterized in that, The step of determining the estimated location of the resonance point based on the relative distance and the spatial location parameters further includes: Based on the relative distance to the second sensor group and the spatial position parameters, the estimated coordinates of the second resonance point are calculated. Based on the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point, the estimated acoustic power of the resonance point is calculated.

8. The resonance positioning method of the current transformer detection device according to claim 7, characterized in that, Determining the estimated location of the resonance point includes: Determine whether the reference distance exceeds the preset distance range; In response to the reference distance being within a preset distance range, a resonance state determination is performed based on the estimated sound power. When the preset resonance condition is met, the reference distance and the number of positioning rounds are updated, and the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point are recalculated based on the updated reference distance and the number of positioning rounds. In response to the reference distance exceeding the preset distance range, the iteration is terminated and the coordinates corresponding to the minimum distance between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point are taken as the estimated position of the resonance point.

9. The resonance positioning method of the current transformer detection device according to claim 8, characterized in that, Taking the coordinates corresponding to the minimum point of the distance between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point as the estimated position of the resonance point includes: Calculate the distance between the estimated coordinates of the first resonance point and the estimated coordinates of the second resonance point in each positioning cycle; Compare the distances described above to determine the target positioning round corresponding to the minimum distance; The coordinates corresponding to the minimum point of the target positioning cycle are used as the estimated position of the resonance point.

10. A resonant positioning system for a current transformer detection device, characterized in that, The system includes a current transformer detection device, multiple resonance response sensors, and a resonance diagnostic module. The plurality of resonance response sensors are mounted on the mutual inductor detection device; The resonance diagnostic module includes: A position parameter acquisition unit is used to acquire the spatial position parameters of the plurality of resonance response sensors; The data acquisition unit is used to acquire the sound intensity response signals collected by the multiple resonance response sensors during the process of a large current flowing through the primary circuit of the current transformer detection device, and generate multi-point sound intensity data. A threshold determination unit is used to determine whether the preset resonance threshold is exceeded based on the multi-point sound intensity data. An alarm unit is used to output resonance alarm information in response to the multi-point sound intensity data exceeding the preset resonance threshold. The distance calculation unit is used to calculate the relative distance between each resonance response sensor and the resonance point based on the multi-point sound intensity data and the spatial position parameters. The positioning unit is used to determine the estimated location of the resonance point based on the relative distance and the position parameters.

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