System and method for analyzing current-carrying capacity of copper-aluminum transition temporary drainage wire clamp

Abstract

The invention discloses a current-carrying capacity analysis system and method for a copper-aluminum transition temporary drainage wire clamp, and relates to the technical field of wire clamp current-carrying capacity analysis, and the system comprises a wire clamp fastening force analysis module which is used for obtaining historical fastening force data, monitoring the relation between the current fastening force and contact resistance in real time, constructing a temperature change model, and analyzing the temperature change model; the optimal fastening force is determined based on an optimization model of the fastening force and the temperature, and the system comprises a first parameter acquisition unit, a wire clamp performance analysis unit and a fastening force control unit; the current-carrying capacity influence analysis module is used for determining the maximum current-carrying capacity of the wire clamp under the optimal condition by analyzing the influence of the fastening force and the temperature on the current-carrying capacity of the wire clamp, and comprises a second parameter acquisition module and a current-carrying capacity analysis unit; the wire clamp abnormity warning module is used for setting three-level warning and comprises a first-level abnormity warning module, a second-level abnormity warning module and a third-level abnormity warning module. According to the invention, the service life of the equipment is obviously prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of current-carrying capacity analysis of wire clamps, and specifically to a system and method for analyzing the current-carrying capacity of a copper-aluminum transition temporary drainage wire clamp. Background Technique

[0002] In the connection between overhead transmission lines and electrical equipment, the copper-aluminum transition temporary drainage wire clamp, as an important connection component, is used to achieve the transition connection of conductors made of different materials. When installing the copper-aluminum transition temporary drainage wire clamp, there are often problems with insufficient installation quality of the wire clamp, including inappropriate tightening force, resulting in abnormal contact resistance, and then generating heat. In severe cases, it will affect the current-carrying capacity of the wire clamp, leading to a decrease in the reliability of the entire transmission line. In the existing published literature, the literature (Wang Yiqing. Causes and Simulation Analysis of Overheating of Strain Clamps on Overhead Lines [D]. South China University of Technology, 2019. DOI: 10.27151 / d.cnki.ghnlu.2019.003477.) analyzed the main factors causing wire clamp overheating by conducting temperature rise tests on strain clamps under multiple variables, determined the mechanism of wire clamp overheating, and based on the analysis results, proposed corresponding measures to prevent wire clamp overheating and methods to solve wire clamp overheating. Then, using a three-dimensional finite element simulation model of the strain clamp based on electromagnetic-thermal coupling, the temperature field of the strain clamp in different states was simulated and calculated. Finally, using the electro-thermal analogy principle, a calculation model for the maximum temperature of the strain clamp under heavy load was constructed, and the model parameters were corrected through experimental and simulation results, and finally a set of software for calculating the maximum temperature of the strain clamp was formed.

[0003] The above literature ignores that during the installation process of the wire clamp, an overly tight connection will cause microscopic deformation of copper or aluminum materials, affecting the actual contact area and conduction path of the contact surface, thereby increasing the contact resistance and causing local heating. On the contrary, if the installation is too loose, the contact surface cannot fit fully, and the current transmission path is blocked, which will also form a high-resistance area and cause heating. Due to the different thermal expansion coefficients of copper and aluminum, the contact resistance will further increase with temperature changes during operation, causing the temperature of the wire clamp to continue to rise, resulting in intensified thermal cycling. Excessive temperature will cause the load-bearing capacity of the wire clamp to decline, and long-term overheating may lead to material degradation and even cause the line to trip. Summary of the Invention

[0004] In view of the above existing problems, the present invention is proposed.

[0005] In a first aspect, as a preferred solution of the system for analyzing the current-carrying capacity of the copper-aluminum transition temporary drainage wire clamp according to the present invention, there are: a wire clamp tightening force analysis module, a current-carrying capacity influence analysis module, and a wire clamp abnormality warning module;

[0006] The clamp fastening force analysis module is used to construct a temperature change model by obtaining historical fastening force data and monitoring the relationship between the current fastening force and contact resistance in real time, and determine the optimal fastening force based on the optimization model of fastening force and temperature, including a first parameter acquisition unit, a clamp performance analysis unit, and a fastening force control unit;

[0007] The current-carrying capacity influence analysis module is used to determine the maximum current-carrying capacity of the clamp under the best conditions by analyzing the influence of the fastening force and temperature on the current-carrying capacity of the clamp, including a second parameter acquisition module and a current-carrying capacity analysis unit;

[0008] The clamp abnormality warning module is used to set three-level alarms, including a first-level abnormality warning module, a second-level abnormality warning module, and a third-level abnormality warning module.

[0009] As a preferred solution of the current-carrying capacity analysis system of the copper-aluminum transition temporary drainage clamp described in the present invention, wherein: the clamp performance analysis unit is used to obtain the fastening force and contact resistance when the clamp is installed, the applied initial fastening force is F0, and the initial contact resistance is R c (F0), and construct a clamp temperature change analysis model based on the fastening force and contact resistance;

[0010] The fastening force control unit is used to obtain the clamp temperature T c (F) when the fastening force is F, and based on T c (F) formulate a fastening force optimization model to find the optimal fastening force F that minimizes the clamp temperature opt , and select the initial fastening force F0;

[0011] And calculate the temperature T c (F0) under the initial fastening force F0, and adjust through the fastening force optimization model so that the clamp temperature T c (F) is minimized to obtain the optimal fastening force F opt , and the formula of the fastening force optimization model is as follows:

[0012]

[0013] F min ≤F≤F max ;

[0014] F min ≤F opt ≤F max ;

[0015] Wherein, T am is the ambient temperature, A(F) is the contact area when the fastening force is F, T min (F opt ) is the optimal fastening force of F optThe minimum clamp temperature value at time MinmizeT c (F) is the minimum clamp temperature when the tightening force is F, F min is the minimum value among the values in the second tightening force range, F max is the maximum value among the values in the second tightening force range.

[0016] As a preferred solution of the current-carrying capacity analysis system for the copper-aluminum transition temporary drainage clamp described in the present invention, wherein: the second parameter acquisition module is connected to the current-carrying capacity analysis unit;

[0017] The second parameter acquisition module is used to obtain the minimum clamp temperature value when the optimal tightening force is F opt and the optimal tightening force F that minimizes the clamp temperature opt ;

[0018] Obtain the first real-time temperature and the first tightening force during the installation of the clamp, and based on the minimum clamp temperature value when the optimal tightening force is F opt construct a first influence index calculation model and obtain the first influence index;

[0019] Based on the optimal tightening force F that minimizes the clamp temperature opt and the first tightening force, construct a second influence index calculation model and obtain the second influence index.

[0020] As a preferred solution of the current-carrying capacity analysis system for the copper-aluminum transition temporary drainage clamp described in the present invention, wherein: the calculation model formula of the first influence index is as follows:

[0021]

[0022] where μ T is the first influence index, n is the number of first real-time temperature acquisitions during the installation process, T i is the i-th first real-time temperature, T c (F) is the clamp temperature when the tightening force is F, T max is the maximum value of the first real-time temperature during the installation process, T min is the minimum value of the first real-time temperature during the installation process, and ε is an adjustment coefficient to prevent the denominator from being zero.

[0023] As a preferred solution of the current-carrying capacity analysis system for the copper-aluminum transition temporary drainage clamp described in the present invention, wherein: the calculation model formula of the second influence index is as follows:

[0024]

[0025] where μ F is the second influence index, n is the number of first tightening force acquisitions during the installation process, Fi is the first tightening force for the i-th, F opt is the optimal tightening force, F min is the minimum value among the numerical values of the second tightening force range, F max is the maximum value among the numerical values of the second tightening force range, and ε is an adjustment coefficient to prevent the denominator from being zero.

[0026] As a preferred solution of the current-carrying capacity analysis system for the copper-aluminum transition temporary current-carrying wire clamp described in the present invention, wherein: the current-carrying capacity analysis unit is used to calculate the minimum wire clamp temperature value when the optimal tightening force is F opt and the optimal tightening force F that minimizes the wire clamp temperature opt to construct a wire clamp current-carrying capacity analysis model and analyze the maximum current-carrying capacity value that the wire clamp can withstand. The formula of the wire clamp current-carrying capacity analysis model is as follows:

[0027]

[0028] wherein, I max is the maximum current-carrying capacity value that the wire clamp can withstand, μ T is the first influence index, μ F is the second influence index, T max is the preset wire clamp temperature threshold, T min (F opt ) is the minimum wire clamp temperature value when the optimal tightening force is F opt , k1 is the wire clamp material constant, F opt is the optimal tightening force, A heat is the effective heat dissipation area of the wire clamp, k is the thermal conductivity of the wire clamp material, and ρ is the resistivity of the wire clamp material.

[0029] As a preferred solution of the current-carrying capacity analysis system for the copper-aluminum transition temporary current-carrying wire clamp described in the present invention, wherein: the first-level abnormal warning module is used for the tightening force during the installation of the copper-aluminum transition temporary current-carrying wire clamp. If the tightening force value is within the standard wire clamp tightening force range, the first-level alarm is not triggered; otherwise, the first-level alarm is triggered;

[0030] The second-level abnormal warning module is used to obtain the wire clamp temperature when the tightening force is F, and compare the wire clamp temperature when the tightening force is F with the preset wire clamp temperature threshold. If the wire clamp temperature when the tightening force is F is greater than or equal to the preset wire clamp temperature threshold, the second-level alarm will be triggered; if the wire clamp temperature when the tightening force is F is less than the preset wire clamp temperature threshold, the second-level alarm is not triggered;

[0031] The three - level abnormal warning module is used to obtain the maximum current - carrying capacity tolerance value of the clamp, compare the maximum current - carrying capacity tolerance value of the clamp with a preset maximum current - carrying capacity tolerance threshold. If the maximum current - carrying capacity tolerance value of the clamp is greater than or equal to the preset maximum current - carrying capacity tolerance threshold, a three - level alarm will be triggered; if the maximum current - carrying capacity tolerance value of the clamp is less than the preset maximum current - carrying capacity tolerance threshold, the three - level alarm will not be triggered.

[0032] In a second aspect, the present invention provides a method for analyzing the current - carrying capacity of a copper - aluminum transition temporary drainage clamp, which includes: collecting historical tightening force data and contact resistance data when the clamp is installed, and real - time monitoring the tightening force and contact resistance of the current clamp;

[0033] Based on the tightening force and contact resistance data, construct a temperature change model of the clamp to optimize the tightening force;

[0034] Using the temperature change model and the optimization model, combined with the physical parameters of the clamp, calculate the maximum current - carrying capacity of the clamp under the condition of the optimal tightening force;

[0035] Set up a three - level alarm mechanism, including a first - level alarm for monitoring the tightening force range, a second - level alarm for checking the temperature threshold, and a third - level alarm for warning that the current - carrying capacity exceeds the maximum bearing value; and adjust the system working state through a feedback mechanism to optimize the usage environment of the clamp.

[0036] In a third aspect, a computer device includes a memory and a processor. The memory stores a computer program, and is characterized in that when the processor executes the computer program, the steps of the above - mentioned copper - aluminum transition temporary drainage clamp current - carrying capacity analysis system are implemented.

[0037] In a fourth aspect, a computer - readable storage medium stores a computer program, and is characterized in that when the computer program is executed by a processor, the steps of the above - mentioned copper - aluminum transition temporary drainage clamp current - carrying capacity analysis system are implemented.

[0038] The beneficial effects of the present invention: By obtaining historical tightening force data, real - time monitoring the relationship between the current tightening force and contact resistance, constructing a temperature change model, and determining the optimal tightening force based on the optimization model of tightening force and temperature, and then based on analyzing the influence of tightening force and temperature on the current - carrying capacity of the clamp, determining the maximum current - carrying capacity of the clamp under the best conditions, it realizes an all - round improvement from installation quality control, temperature optimization to maximum current - carrying capacity analysis, ensures the efficient and safe operation of the clamp, sets up a three - level alarm for warning, further enhances the security of the system, significantly extends the service life of the equipment, and helps to reduce the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other accompanying drawings can also be obtained based on these drawings.

[0040] Figure 1 It is a schematic structural diagram of a terminal in the first embodiment of the present invention;

[0041] Figure 2 It is a schematic structural diagram in the first embodiment of the present invention;

[0042] Figure 3 It is a schematic structural diagram of a computer device in the third embodiment of the present invention. Detailed implementation manners

[0043] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will provide a detailed description of the specific implementation manners of the present invention with reference to the accompanying drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0044] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from the described ones. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0045] Embodiment 1

[0046] Refer to Figures 1 - 3 , which is an embodiment of the present invention, providing a current-carrying capacity analysis system for a copper-aluminum transition temporary drainage wire clamp.

[0047] First of all, the current-carrying capacity analysis system for the copper-aluminum transition temporary drainage wire clamp provided in this application can be applied to a terminal as shown in Figure 1 . As shown in Figure 1 , the terminal may include one or two (only one is shown in Figure 1 ) processors and a memory for storing data. Among them, the processor may include, but is not limited to, a processing system such as a microprocessor MCU or a programmable logic device FPGA. The above terminal may also include a transmission device for communication functions and input / output devices. Those of ordinary skill in the art can understand that the structure shown in Figure 1 is only schematic and does not limit the structure of the above terminal. For example, the terminal may also include more than Figure 1more or fewer components shown, or having a different configuration from that shown in Figure 1 shown.

[0048] The memory can be used to store computer programs, such as the computer program corresponding to the current-carrying capacity analysis system of the copper-aluminum transition temporary current-carrying clamp in this embodiment. The processor executes various functional applications and data processing by running the computer program stored in the memory, that is, the above method is implemented. The memory can include high-speed random access memory, and can also include non-volatile memory, such as one or more magnetic storage systems, flash memory, or other non-volatile solid-state memories. In some instances, the memory can further include a memory remotely set relative to the processor, and these remote memories can be connected to the terminal through a network. Examples of the above network include but are not limited to the Internet, intranet, local area network, mobile communication network, and their combinations.

[0049] The transmission device is used to receive or send data via a network. The above network includes the wireless network provided by the communication provider of the terminal. In one instance, the transmission device includes a network adapter (abbreviated as NIC), which can be connected to other network devices through a base station and thus can communicate with the Internet. In one instance, the transmission device can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0050] As Figure 2 shown, an embodiment of the present invention provides a current-carrying capacity analysis system for a copper-aluminum transition temporary current-carrying clamp. Taking the method applied to the Figure 1 terminal in as an example, the following steps are included:

[0051] S1: a clamp tightening force analysis module, a current-carrying capacity influence analysis module, and a clamp abnormality warning module;

[0052] The clamp tightening force analysis module is used to construct a temperature change model by obtaining historical tightening force data and real-time monitoring the relationship between the current tightening force and the contact resistance, and determine the optimal tightening force based on the optimization model of the tightening force and temperature, including a first parameter acquisition unit, a clamp performance analysis unit, and a tightening force control unit;

[0053] Further, the first parameter acquisition unit is used to obtain the first tightening force range value when the copper-aluminum transition temporary current-carrying clamp is installed historically, screen out the maximum value and the minimum value based on the first tightening force range value, obtain the second tightening force range value after deleting the maximum value and the minimum value, and determine the standard clamp tightening force range based on the maximum value and the minimum value in the second tightening force range;

[0054] The clamp performance analysis unit is used to obtain the tightening force and contact resistance when the clamp is installed. Among them, the applied initial tightening force is F0, and the initial contact resistance is R c (F0). Based on the tightening force and contact resistance, a clamp temperature change analysis model is constructed. The formula of the clamp temperature change analysis model is:

[0055]

[0056] Among them, is the gradient operator, k is the thermal conductivity of the clamp material, T c (F) is the clamp temperature when the tightening force is F, I is the current of the clamp, R c (F) is the contact resistance when the tightening force is F, is the heat conduction term, indicating the heat diffusion caused by the temperature difference of the clamp. I 2 ·R c (F) is the Joule heat generated when the current passes through the contact resistance R c (F), T am is the ambient temperature, and A(F) is the contact area when the tightening force is F.

[0057] Furthermore, the clamp performance analysis unit is used to obtain the tightening force and contact resistance when the clamp is installed. The applied initial tightening force is F0, and the initial contact resistance is R c (F0). Based on the tightening force and contact resistance, a clamp temperature change analysis model is constructed;

[0058] Furthermore, the tightening force control unit is used to obtain the clamp temperature T c (F) when the tightening force is F, and based on T c (F), a tightening force optimization model is formulated to find the optimal tightening force F that minimizes the clamp temperature opt , and the initial tightening force F0 is selected;

[0059] And the temperature T c (F0) under the initial tightening force F0 is calculated. Through the tightening force optimization model, the clamp temperature T c (F) when the tightening force is F is adjusted to be minimized to obtain the optimal tightening force F opt . The formula of the tightening force optimization model is as follows:

[0060]

[0061] F min ≤F≤F max ;

[0062] F min ≤F opt ≤F max ;

[0063] Among them, T am is the ambient temperature, A(F) is the contact area when the tightening force is F, T min (F opt ) is the minimum clamp temperature value when the optimal tightening force is F opt , MinmizeT c (F) is the minimum clamp temperature when the tightening force is F, F min is the minimum value in the second tightening force range value, F max is the maximum value in the second tightening force range value.

[0064] Through the first parameter acquisition unit, automatically collect and analyze historical installation tightening force data, screen out the standard tightening force range [F min , F max , provide reference for newly installed clamps, determine the tightening force range in a data-driven manner, reduce errors caused by manual judgment, ensure that the tightening force remains within the optimal range during installation, thereby improving the installation quality; the clamp performance analysis unit constructs a temperature change analysis model based on real-time tightening force and contact resistance, can predict the temperature change of the clamp in real time, and understand the temperature change in time by calculating the Joule heat generated by the current passing through the contact resistance and the influence of heat conduction, avoiding equipment failures or safety hazards caused by too high temperature; the tightening force control unit finds the optimal tightening force that can minimize the temperature by obtaining the real-time temperature and establishing a tightening force optimization model. The optimal tightening force can effectively reduce the contact resistance and reduce the generation of Joule heat, thereby reducing power loss and improving the overall operation efficiency of the clamp; by ensuring that the tightening force operates within the best range and under the condition of minimum temperature, the stress and fatigue damage caused by over-tight or over-loose installation are reduced, effectively reducing the mechanical fatigue and heat loss of the clamp, extending the service life of the equipment, and improving the long-term operation stability; by optimizing the tightening force and reducing the temperature rise, this module helps to reduce the safety risks caused by poor contact or abnormal temperature, can optimize the tightening force in time, ensure that the equipment operates within the safe temperature range, and reduce the failure risks caused by overheating or poor contact.

[0065] S2: The ampacity impact analysis module is used to determine the maximum ampacity of the clamp under the best conditions by analyzing the influence of the tightening force and temperature on the ampacity of the clamp, including a second parameter acquisition module and an ampacity analysis unit;

[0066] Furthermore, the second parameter acquisition module is connected to the ampacity analysis unit;

[0067] The second parameter acquisition module is used to obtain the minimum clamp temperature value when the optimal tightening force is F opt and the optimal tightening force F opt that minimizes the clamp temperature;

[0068] Obtain the first real-time temperature and the first tightening force during the installation of the wire clamp, and construct a first influence index calculation model based on the minimum wire clamp temperature value and the first real-time temperature when the optimal tightening force is F opt to obtain the first influence index;

[0069] Based on the optimal tightening force F that minimizes the wire clamp temperature opt and the first tightening force, construct a second influence index calculation model to obtain the second influence index.

[0070] Furthermore, the calculation model formula of the first influence index is as follows:

[0071]

[0072] where μ T is the first influence index, n is the number of acquisitions of the first real-time temperature during the installation process, T i is the i-th first real-time temperature, T c (F) is the wire clamp temperature when the tightening force is F, T max is the maximum value of the first real-time temperature during the installation process, T min is the minimum value of the first real-time temperature during the installation process, and ε is an adjustment coefficient to prevent the denominator from being zero.

[0073] The calculation model formula of the second influence index is as follows:

[0074]

[0075] where μ F is the second influence index, n is the number of acquisitions of the first tightening force during the installation process, F i is the i-th first tightening force, F opt is the optimal tightening force, F min is the minimum value in the second tightening force range value, F max is the maximum value in the second tightening force range value, and ε is an adjustment coefficient to prevent the denominator from being zero.

[0076] Furthermore, the current-carrying capacity analysis unit is used to construct a wire clamp current-carrying capacity analysis model based on the minimum wire clamp temperature value when the optimal tightening force is F opt and the optimal tightening force F that minimizes the wire clamp temperature opt to analyze the maximum current-carrying capacity tolerance value of the wire clamp. The formula of the wire clamp current-carrying capacity analysis model is as follows:

[0077]

[0078] where I max is the maximum current-carrying capacity tolerance value of the wire clamp, μ T is the first influence index, μF is the second influencing index, T max is the preset temperature threshold of the clamp, T min (F opt ) is the optimal tightening force of F opt When it is the minimum clamp temperature value, k1 is the clamp material constant, F opt is the optimal tightening force, A heat is the effective heat dissipation area of the clamp, k is the thermal conductivity of the clamp material, and ρ is the resistivity of the clamp material.

[0079] The second parameter acquisition module obtains temperature and tightening force data in real time during the installation process, evaluates the fluctuation degree of temperature and tightening force by calculating the first and second influencing indexes. Based on real-time data analysis, it can accurately judge the actual operating state of the clamp and provide more reliable ampacity analysis results; the second parameter acquisition module automatically optimizes key parameters through the optimal values of temperature and tightening force and the minimum temperature, enabling the clamp to operate in the best state. By automatically acquiring and calculating the optimal parameters, it reduces the errors caused by manual intervention, ensures the optimal installation and operation parameters, and thus improves the safety of the clamp; the first influencing index and the second influencing index quantify the temperature and tightening force fluctuations during the installation process, which helps to identify potential abnormal situations. By analyzing the temperature and tightening force fluctuations, abnormal situations can be detected in advance and warnings can be issued to prevent failures caused by excessive temperature or abnormal tightening force; the ampacity analysis unit calculates the maximum ampacity bearing value of the clamp based on the optimal tightening force and temperature, ensuring that the clamp reaches the maximum current transmission capacity without exceeding the safety threshold. By optimizing the ampacity, the module enables the clamp to efficiently transmit electricity, reduces power loss, and improves the transmission efficiency; through optimal tightening force control and temperature fluctuation monitoring, it reduces the stress, heat loss, and fatigue caused by over-tightening or over-loosening installation. The stable operating state reduces the fatigue and damage rate of the equipment, thus extending the service life of the clamp and reducing the cost of daily maintenance and replacement.

[0080] S3: The clamp abnormal warning module is used to set three-level alarms, including the first-level abnormal warning module, the second-level abnormal warning module, and the third-level abnormal warning module.

[0081] The first-level abnormal warning module is used for the tightening force during the installation of the copper-aluminum transition temporary drainage line clamp. If the tightening force value is within the standard clamp tightening force range, the first-level alarm is not triggered; otherwise, the first-level alarm is triggered;

[0082] The second-level abnormal warning module is used to obtain the clamp temperature when the tightening force is F, and compare the clamp temperature when the tightening force is F with the preset clamp temperature threshold. If the clamp temperature when the tightening force is F is greater than or equal to the preset clamp temperature threshold, the second-level alarm will be triggered; if the clamp temperature when the tightening force is F is less than the preset clamp temperature threshold, the second-level alarm is not triggered;

[0083] The third-level abnormal warning module is used to obtain the maximum current-carrying capacity tolerance value of the clamp, compare the maximum current-carrying capacity tolerance value of the clamp with a preset maximum current-carrying capacity tolerance threshold. If the maximum current-carrying capacity tolerance value of the clamp is greater than or equal to the preset maximum current-carrying capacity tolerance threshold, a third-level alarm will be triggered; if the maximum current-carrying capacity tolerance value of the clamp is less than the preset maximum current-carrying capacity tolerance threshold, the third-level alarm will not be triggered.

[0084] The first-level abnormal warning module monitors the tightening force of the clamp in real time during the installation stage, judges whether it is within the standard tightening force range. If the tightening force value deviates from the range, an alarm will be triggered immediately to remind whether the installation tightening force is too tight or too loose in time, ensure that the installation meets the standards, avoid unstable equipment operation caused by installation errors, and guarantee the installation quality; the second-level abnormal warning module monitors whether the temperature of the clamp exceeds the safety threshold during the operation stage. If the temperature exceeds the preset temperature threshold, an alarm will be triggered to remind to check and take cooling measures, monitor the temperature over-limit situation in time, prevent equipment damage, power transmission efficiency decline, and even potential fire risks caused by overheating, thereby improving the safety of equipment operation; the third-level abnormal warning module monitors the maximum current-carrying capacity tolerance value of the clamp, judges whether it exceeds the preset current-carrying capacity tolerance threshold. Once the current-carrying capacity reaches or exceeds the set threshold, the system will trigger a third-level alarm. By monitoring the maximum current-carrying capacity, avoid the equipment running for a long time under overloaded conditions, prevent equipment overheating, damage or failure caused by overload, and ensure the stability of the power system.

[0085] Embodiment 2

[0086] This is an embodiment of the present invention, which provides a method for analyzing the current-carrying capacity of a copper-aluminum transition temporary drainage clamp, including: collecting historical tightening force data and contact resistance data when the clamp is installed, and real-time monitoring the tightening force and contact resistance of the current clamp;

[0087] Based on the tightening force and contact resistance data, construct a clamp temperature change model to optimize the tightening force;

[0088] Using the temperature change model and the optimization model, combined with the physical parameters of the clamp, calculate the maximum current-carrying capacity of the clamp under the condition of the best tightening force;

[0089] Set a three-level alarm mechanism, including the first-level alarm to monitor the tightening force range, the second-level alarm to check the temperature threshold, and the third-level alarm to warn that the current-carrying capacity exceeds the maximum bearing value; and adjust the system working state through a feedback mechanism to optimize the use environment of the clamp

[0090] For the specific limitations of the current-carrying capacity analysis system of the copper-aluminum transition temporary current lead clamp, reference can be made to the limitations of the copper-aluminum transition temporary current lead clamp current-carrying capacity analysis system in the above text, which will not be elaborated here. Each module in the above copper-aluminum transition temporary current lead clamp current-carrying capacity analysis system can be implemented in whole or in part by software, hardware, and their combinations. The above-mentioned modules can be embedded in the processor of the computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to each of the above modules.

[0091] Embodiment 3

[0092] Refer to Figure 3 , which is the third embodiment of the present invention. On the basis of the first two embodiments, the embodiment of the present invention provides a computer device, which can be a server, and its internal structure diagram can be as Figure 3 shown. The computer device includes a processor, a memory, and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium.

[0093] The database of the computer device is used to store motion detection data. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, it realizes the steps in any one of the above-mentioned sparse tensor operation acceleration method embodiments.

[0094] Those skilled in the art can understand that Figure 3 the structure shown in

[0095] is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have a different component layout.

[0096] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memories. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0097] Embodiment 4

[0098] An embodiment of the present invention provides a system for analyzing the current-carrying capacity of a copper-aluminum transition temporary current-carrying wire clamp. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0099] In this embodiment, the method for analyzing the current-carrying capacity of the copper-aluminum transition temporary current-carrying wire clamp is used for the experiment to verify the effectiveness and innovation of the present invention. In the experiment, a typical copper-aluminum transition temporary current-carrying wire clamp is adopted. This wire clamp is used to connect copper wires and aluminum wires in the power system, carry current, and conduct heat. The main objective of the experiment is to analyze the current-carrying capacity of the wire clamp through the system of the present invention and ensure its performance under the optimal tightening force condition.

[0100] In the experiment, first, samples of different types of copper-aluminum transition temporary current-carrying wire clamps are prepared, including standard wire clamps and wire clamps adopting the optimization scheme of the present invention. Then, these wire clamps are installed on an experimental platform to simulate different working environments, including different temperature and tightening force conditions. Three tightening force conditions are set in the experiment: initial tightening force, optimized tightening force, and overload tightening force. At the same time, the working states of the wire clamps at different temperatures are monitored and recorded.

[0101] During the whole experiment process, a variety of sensors are used to collect parameters such as tightening force, contact resistance, temperature, and current-carrying capacity in real time. The data acquisition system includes:

[0102] Used to collect the initial tightening force and contact resistance data during installation.

[0103] Analyze the maximum current-carrying capacity of the wire clamp according to the changes in temperature and tightening force.

[0104] Monitor whether the wire clamp exceeds the preset temperature and current-carrying capacity thresholds under different working conditions and issue an alarm.

[0105] Evaluate the advantages of the present invention in improving the working efficiency, extending the service life and reducing failures of the wire clamp by analyzing the experimental data under different conditions.

[0106] Table 1 Experimental data table

[0107]

[0108]

[0109] Based on the data in the table, the following analysis was carried out:

[0110] Under different tightening forces, the optimized wire clamp shows a smaller resistance value in terms of contact resistance. In particular, the contact resistance of the optimized wire clamps (Model 1 and Model 2) is lower than that of the standard wire clamp, indicating that by optimizing the tightening force, the contact resistance can be reduced, thereby reducing heat accumulation and improving the conduction efficiency.

[0111] Through the tightening force optimization model, the working temperature of the wire clamp has been effectively reduced under different optimization schemes. In particular, under the overload condition of the standard wire clamp, the temperature is 55°C, which is close to the working limit of the material, while the temperature of the optimized wire clamp remains at about 50°C, which significantly reduces the safety risk brought by the temperature rise.

[0112] The maximum current-carrying capacity of the optimized wire clamp under different working conditions is significantly higher than that of the standard wire clamp. For example, in the optimized wire clamp (Model 2), the maximum current-carrying capacity is increased from 150 A of the standard wire clamp to 200 A, an increase of about 33%. This shows that by optimizing the tightening force and contact resistance, the current-carrying capacity of the wire clamp can be significantly improved, thereby enhancing the stability of the power system.

[0113] By comparing the experimental data under different working conditions, it can be seen that the optimized wire clamp can effectively trigger the abnormal alarm system under overload or high-temperature conditions. When the standard wire clamp is in the overload condition, the temperature has exceeded the preset threshold and triggers a first-level alarm. While the optimized wire clamp can maintain a lower temperature, avoid failures caused by overload, and even does not trigger an alarm under higher load conditions. Especially under the optimized wire clamp (Model 2), even under overload or high-temperature conditions, the temperature and current-carrying capacity can be kept within a safe range.

[0114] Through the experimental data, it can be seen that the current-carrying capacity analysis system of the copper-aluminum transition temporary current-carrying wire clamp has significant innovation and advantages compared with the existing technology. First of all, by optimizing the tightening force and contact resistance, the optimized wire clamp can work at a lower temperature, thus reducing the problems of heat loss and heat accumulation, and improving work efficiency. Secondly, through accurate current-carrying capacity analysis, the optimized wire clamp can withstand a greater current load, thus enhancing the stability and safety of the system. Finally, the three-level alarm system of the wire clamp abnormal warning module can provide instant feedback under different load and temperature conditions to ensure the safe operation of the wire clamp.

[0115] In the present invention, the application of the optimization model effectively improves the bearing capacity of the wire clamp and reduces the failure risk caused by overload or overheating, with obvious technological innovation. In addition, the optimized analysis of the wire clamp temperature and current-carrying capacity ensures the reliability and stability of the power system with copper-aluminum transition connection during long-term operation.

[0116] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A copper-aluminum transition temporary drainage clamp current carrying capacity analysis system, characterized in that: include: Wire clamp fastening force analysis module, current carrying capacity impact analysis module and wire clamp abnormality warning module; The wire clamp fastening force analysis module is used to acquire historical fastening force data, monitor the relationship between the current fastening force and the contact resistance in real time, build a temperature change model, and determine the optimal fastening force based on the optimization model of the fastening force and temperature, and includes a first parameter acquisition unit, a wire clamp performance analysis unit, and a fastening force control unit; The current carrying capacity impact analysis module is used to determine the maximum current carrying capacity of the wire clamp under optimal conditions by analyzing the influence of the fastening force and temperature on the current carrying capacity of the wire clamp, and includes a second parameter acquisition module and a current carrying capacity analysis unit; The wire clamp abnormality warning module is used to set a three-level alarm, including a first-level abnormality warning module, a second-level abnormality warning module and a third-level abnormality warning module.

2. The copper-aluminum transition temporary drainage clamp current carrying capacity analysis system according to claim 1, characterized in that: The wire clamp performance analysis unit is used to obtain the fastening force and contact resistance when the wire clamp is installed. The initial fastening force applied is F0, and the initial contact resistance is R c (F0), construct a clamp temperature change analysis model based on the clamping force and contact resistance; The tightening force control unit is used to obtain the clamp temperature T when the tightening force is F. c (F), and based on T c (F) Develop a tightening force optimization model to find the optimal tightening force F that minimizes the clamp temperature opt , select the initial tightening force F0; And calculate the temperature T under the initial tightening force F0 c (F0), the clamp temperature T when the tightening force is F is adjusted by the tightening force optimization model c (F) is minimized to obtain the optimal tightening force F opt , the tightening force optimization model formula is as follows: F min ≤F≤F max ; F min ≤F opt ≤F max ; Among them, T am is the ambient temperature, A(F) is the contact area when the tightening force is F, T min (F opt ) is the optimal tightening force F opt The minimum clamp temperature value when c (F) is the minimum clamp temperature when the clamping force is F, F min is the minimum value in the second tightening force range, F max It is the maximum value in the second tightening force range.

3. The copper-aluminum transition temporary drainage clamp current carrying capacity analysis system according to claim 2, characterized in that: The second parameter acquisition module is connected to the current carrying capacity analysis unit; The second parameter acquisition module is used to obtain the optimal tightening force F opt The minimum clamp temperature value when the clamp temperature is minimized and the optimal tightening force F opt ; Obtain the first real-time temperature and the first tightening force during the installation of the wire clamp, and based on the optimal tightening force F opt The minimum clamp temperature value at the time and the first real-time temperature are used to construct a first influencing index calculation model to obtain the first influencing index; Optimal clamping force F based on minimizing clamp temperature opt A second influencing index calculation model is constructed with the first tightening force to obtain the second influencing index.

4. The copper-aluminum transition temporary drainage clamp current carrying capacity analysis system according to claim 3, characterized in that: The calculation model formula of the first impact indicator is as follows: Among them, μ T is the first influencing indicator, n is the number of first real-time temperature acquisitions during the installation process, T i is the first real-time temperature of the ith c (F) is the clamp temperature when the clamping force is F, T max The maximum value of the first real-time temperature during the installation process, T min is the minimum value of the first real-time temperature during the installation process, and ε is the adjustment coefficient to prevent the denominator from being zero.

5. The copper-aluminum transition temporary drainage clamp current carrying capacity analysis system according to claim 4, characterized in that: The calculation model formula of the second impact index is as follows: Among them, μ F is the second influencing index, n is the number of first tightening forces obtained during installation, and F i is the i-th first tightening force, F opt is the optimal tightening force, F min is the minimum value in the second tightening force range, F max is the maximum value in the second tightening force range, and ε is the adjustment coefficient to prevent the denominator from being zero.

6. The copper-aluminum transition temporary drainage clamp current carrying capacity analysis system according to claim 5, characterized in that: The current carrying capacity analysis unit is used to calculate the optimal fastening force based on F opt The minimum clamp temperature value when the clamp temperature is minimized and the optimal tightening force F opt Construct a current carrying capacity analysis model for the wire clamp to analyze the maximum current carrying capacity of the wire clamp. The formula for the current carrying capacity analysis model for the wire clamp is as follows: Among them, I max is the maximum current carrying capacity of the wire clamp, μ T is the first influencing indicator, μ F is the second influencing indicator, T max is the preset clamp temperature threshold, T min (F opt ) is the optimal tightening force F opt The minimum clamp temperature value when k1 is the clamp material constant, F opt is the optimal tightening force, A heat is the effective heat dissipation area of ​​the wire clamp, k is the thermal conductivity of the wire clamp material, and ρ is the resistivity of the wire clamp material.

7. The copper-aluminum transition temporary drainage clamp current carrying capacity analysis system according to claim 6, characterized in that: The first-level abnormal warning module is used for the tightening force of the copper-aluminum transition temporary drainage wire clamp during installation. If the tightening force value is within the standard wire clamp tightening force range, the first-level alarm will not be triggered; otherwise, the first-level alarm will be triggered; The secondary abnormal warning module is used to obtain the wire clamp temperature when the tightening force is F, and compare the wire clamp temperature when the tightening force is F with the preset wire clamp temperature threshold. If the wire clamp temperature when the tightening force is F is greater than or equal to the preset wire clamp temperature threshold, a secondary alarm will be triggered; if the wire clamp temperature when the tightening force is F is less than the preset wire clamp temperature threshold, the secondary alarm will not be triggered; The third-level abnormal warning module is used to obtain the maximum current-carrying capacity of the wire clamp, and compare the maximum current-carrying capacity of the wire clamp with the preset maximum current-carrying capacity threshold. If the maximum current-carrying capacity of the wire clamp is greater than or equal to the preset maximum current-carrying capacity threshold, a third-level alarm will be triggered; if the maximum current-carrying capacity of the wire clamp is less than the preset maximum current-carrying capacity threshold, the third-level alarm will not be triggered.

8. A method for analyzing the current carrying capacity of a temporary drain wire clamp for copper-aluminum transition, based on the current carrying capacity analysis system for a temporary drain wire clamp for copper-aluminum transition according to any one of claims 1 to 7, characterized in that: include, Collect historical clamp force data and contact resistance data during installation, and monitor the clamp force and contact resistance of the current clamp in real time; Based on the clamping force and contact resistance data, a clamp temperature change model is constructed to optimize the clamping force. The maximum current carrying capacity of the wire clamp under the optimal tightening force condition is calculated by using the temperature change model and the optimization model combined with the physical parameters of the wire clamp; A three-level alarm mechanism is set up, including a first-level alarm to monitor the tightening force range, a second-level alarm to check the temperature threshold, and a third-level alarm to warn that the current carrying capacity exceeds the maximum load value; And through the feedback mechanism, the system working status is adjusted to optimize the use environment of the wire clamp.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the copper-aluminum transition temporary drainage clamp current carrying capacity analysis system described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the current carrying capacity analysis system of the copper-aluminum transition temporary drainage clamp described in any one of claims 1 to 7 are implemented.

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