A method, device, equipment and storage medium for selecting electric composite grease

Abstract

The present invention discloses a method, device, equipment and storage medium for selecting an electric composite grease. The method includes obtaining a mass variation coefficient of a candidate electric composite grease in a thermal oxidative aging test, judging whether the mass variation coefficient is less than or equal to a preset coefficient, and determining the candidate electric composite grease with a mass variation coefficient less than or equal to the preset coefficient as a first electric composite grease. Obtaining a temperature variation parameter of a copper busbar connection position in a current temperature rise test, judging whether the temperature variation parameter is less than or equal to a preset temperature parameter, and determining the first electric composite grease coated at the connection position when the temperature variation parameter is less than or equal to the preset temperature parameter as the required electric composite grease. In this way, when selecting the electric composite grease, the environmental impact factors of thermal oxidative aging and the operating conditions under high current are comprehensively considered, so that the final required electric composite grease meets the requirements for on-site use, thereby ensuring the safety and economy of on-site use.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of power composite grease, and in particular to a method, device, equipment and storage medium for selecting power composite grease. Background Art

[0002] Electrical composite grease, also known as conductive paste, is a conductive paste that is mixed and evenly dispersed with base oil, thickener, conductive filler and other substances. It is mainly used in the connection parts of electrical equipment to reduce contact resistance.

[0003] A wide variety of power compound greases are available on the market. The current selection method for power grids relies on meeting the requirements of the power industry standard DL / T 373-2019, "Technical Requirements for Power Compound Greases." This single-minded approach fails to consider the impact of environmental factors and operating conditions on the performance of the compound grease. Consequently, the selected compound greases fail to meet field requirements, leading to accelerated aging, shortened lifespans, and decreased performance. These factors can cause abnormal heating in equipment, impacting the safety and economic operation of the power grid. Summary of the Invention

[0004] The present invention provides a method, device, equipment and storage medium for selecting an electric composite grease. When selecting the electric composite grease, environmental factors affecting thermal oxidation aging and operating conditions under high current are comprehensively considered, so that the final confirmed electric composite grease meets the requirements for on-site use, thereby ensuring the safety and economy of on-site use.

[0005] In a first aspect, an embodiment of the present invention provides a method for selecting an electric composite grease, the method comprising:

[0006] Obtain the quality variation coefficient of the selected power compound grease in the thermal oxygen aging test;

[0007] Determining whether the mass variation coefficient is less than or equal to a preset coefficient, and determining the candidate power composite resin having the mass variation coefficient less than or equal to the preset coefficient as the first power composite resin;

[0008] Obtaining a temperature variation parameter of a connection position of the copper busbar during a current temperature rise test, wherein the connection position is coated with the first power composite grease;

[0009] It is determined whether the temperature change parameter is less than or equal to a preset temperature parameter, and when the temperature change parameter is less than or equal to the preset temperature parameter, the first power composite grease coated at the connection position is determined as the required power composite grease.

[0010] The method of obtaining the mass variation coefficient of the selected electric composite grease in the thermal oxidation aging test includes:

[0011] Obtaining a first quality parameter of the selected power composite grease before a thermal oxidation aging test;

[0012] Obtaining a second quality parameter of the selected power composite grease after a thermal oxidation aging test;

[0013] The quality variation coefficient is determined according to the first quality parameter, the second quality parameter and the first calculation formula, wherein the thermal oxidation aging test includes testing the selected power composite grease at a preset temperature for a first preset time.

[0014] Optionally, the first calculation formula includes:

[0015] K1=(G1-G2) / G1

[0016] Wherein, G1 is the first quality parameter, G2 is the second quality parameter, and K1 is the quality variation coefficient.

[0017] Optionally, obtaining the temperature change parameter of the connection position in the current temperature rise test includes:

[0018] Obtaining a first temperature parameter of the connection position before a current temperature rise test;

[0019] Obtaining a second temperature parameter of the connection position after the current temperature rise test;

[0020] The temperature change parameter is determined according to the first temperature parameter, the second temperature parameter and a second calculation formula, wherein the current temperature rise test includes testing the copper busbar being energized at a preset current for a second preset time.

[0021] Optionally, the second calculation formula includes:

[0022] K2=T2-T1

[0023] Wherein, T1 is the first temperature parameter, T2 is the second temperature parameter, and K2 is the temperature change parameter.

[0024] Optionally, before obtaining the mass variation coefficient of the selected power composite grease in the thermal oxidative aging test, the method further includes:

[0025] It is determined whether all parameters of the electric composite grease meet standard parameters, and the electric composite grease whose parameters meet the standard parameters is determined as the to-be-selected electric composite grease.

[0026] Optionally, the preset coefficient includes 1.5%, and the preset temperature parameter includes 50K.

[0027] In a second aspect, an embodiment of the present invention further provides a device for selecting electric composite grease, the device comprising:

[0028] The first acquisition module is used to obtain the mass variation coefficient of the selected power composite grease in the thermal oxygen aging test;

[0029] A first judgment module is configured to judge whether the mass variation coefficient is less than or equal to a preset coefficient, and determine the candidate power composite resin having the mass variation coefficient less than or equal to the preset coefficient as the first power composite resin;

[0030] a second acquisition module, configured to acquire a temperature variation parameter of a connection position of the copper busbar during a current temperature rise test, wherein the connection position is coated with the first power composite grease;

[0031] The second judgment module is used to judge whether the temperature change parameter is less than or equal to a preset temperature parameter, and when the temperature change parameter is less than or equal to the preset temperature parameter, determine the first power composite grease coated on the connection position as the required power composite grease.

[0032] In a third aspect, an embodiment of the present invention further provides a device for selecting an electric composite resin, the device comprising: one or more processors; a storage device for storing one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors implement the selection method described in any embodiment of the present invention.

[0033] In a fourth aspect, an embodiment of the present invention further provides a storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the selection method as described in any one of the embodiments of the present invention.

[0034] This embodiment of the present invention obtains the mass variation coefficient of a candidate electrical composite grease during a thermal-oxidative aging test, determines whether the mass variation coefficient is less than or equal to a preset coefficient, and identifies the candidate electrical composite grease with a mass variation coefficient less than or equal to the preset coefficient as the first electrical composite grease. It also obtains the temperature variation parameter of the copper busbar's connection location during a current-temperature-rise test, determines whether the temperature variation parameter is less than or equal to a preset temperature parameter, and identifies the first electrical composite grease applied at the connection location when the temperature variation parameter is less than or equal to the preset temperature parameter as the required electrical composite grease. Thus, when selecting the electrical composite grease, the environmental impact of thermal-oxidative aging and operating conditions under high current are comprehensively considered, ensuring that the final required electrical composite grease meets on-site requirements. This avoids problems such as accelerated aging, shortened lifespan, performance degradation, and abnormal heating of the equipment during use, thereby ensuring safety and cost-effectiveness in on-site use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1This is a flow chart of a method for selecting an electric composite grease provided by an embodiment of the present invention;

[0036] Figure 2 This is a flow chart of another method for selecting electric composite grease provided by an embodiment of the present invention;

[0037] Figure 3 This is a schematic structural diagram of a device for selecting electric composite grease provided by an embodiment of the present invention;

[0038] Figure 4 It is a structural schematic diagram of an electric composite grease selection device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] Example 1

[0042] Figure 1 This is a flow chart of a method for selecting a power composite grease provided by an embodiment of the present invention. This embodiment is applicable to selecting a power composite grease. The method can be executed by a selection device provided by an embodiment of the present invention, which can be implemented using software and / or hardware. The device can be configured in the selection equipment provided by an embodiment of the present invention. The selection method includes:

[0043] S110. Obtain a mass variation coefficient of the selected electrical composite grease in a thermal oxygen aging test.

[0044] The selected electric composite grease is one that meets the "Technical Requirements for Electric Composite Greases," meaning that the performance, technical requirements, test methods, inspection rules, marking, packaging, storage, and transportation of the selected electric composite grease all meet the requirements. The thermal oxidative aging test is a test that detects the degree to which environmental factors affect the selected electric composite grease. For example, by performing a thermal oxidative aging test on the selected electric composite grease, the degree to which the selected electric composite grease is affected by the thermal oxidative aging environmental factors can be determined by measuring the change in mass of the selected electric composite grease before and after the thermal oxidative aging test. The mass variation coefficient can be understood as the degree of change in mass of the selected electric composite grease before and after the thermal oxidative aging test.

[0045] S120: Determine whether the mass variation coefficient is less than or equal to a preset coefficient, and determine the candidate power composite resin whose mass variation coefficient is less than or equal to the preset coefficient as the first power composite resin.

[0046] Specifically, the mass change coefficient can reflect the degree of mass change of the candidate electric composite grease before and after the thermal oxygen aging test. If the degree of mass change of the candidate electric composite grease before and after the thermal oxygen aging test is large, it indicates that the candidate electric composite grease is greatly affected by the environmental factors of thermal oxygen aging, that is, the electric composite grease ages faster and has a shorter service life. Therefore, the candidate electric composite grease with a large degree of mass change before and after the thermal oxygen aging test is not selected; if the degree of mass change of the candidate electric composite grease before and after the thermal oxygen aging test is small, it indicates that the candidate electric composite grease is less affected by the environmental factors of thermal oxygen aging, that is, the electric composite grease ages slower and has a longer service life. Therefore, the candidate electric composite grease with a smaller degree of mass change before and after the thermal oxygen aging test is selected, and the candidate electric composite grease with a smaller degree of mass change before and after the thermal oxygen aging test is recorded as the first electric composite grease.

[0047] Exemplarily, it is determined whether the mass change coefficient of the selected electric composite grease is less than or equal to the preset coefficient. If the mass change coefficient is less than or equal to the preset coefficient, it indicates that the mass change degree of the selected electric composite grease before and after the thermal oxygen aging test is small, and then the selected electric composite grease with a mass change coefficient less than or equal to the preset coefficient is determined as the first electric composite grease. If the mass change coefficient is greater than the preset coefficient, it indicates that the mass change degree of the selected electric composite grease before and after the thermal oxygen aging test is large, and then the selected electric composite grease with a mass change coefficient greater than the preset coefficient is determined as an unqualified selected electric composite grease.

[0048] S130. Obtain temperature variation parameters of the connection position of the copper busbar during the current temperature rise test.

[0049] Specifically, after selecting the first power composite resin from the candidate power composite resins, the first power composite resin needs to be subjected to a current temperature rise test. This current temperature rise test is a test to detect the degree to which the operating conditions affect the first power composite resin. For example, before the test, the first power composite resin needs to be applied to the copper busbar connection location. The temperature change at the connection location before and after the current temperature rise test is used to determine the degree to which the first power composite resin is affected by the high current operating conditions. The temperature change parameter can be understood as the degree of temperature change at the connection location before and after the current temperature rise test.

[0050] S140: Determine whether the temperature change parameter is less than or equal to the preset temperature parameter, and when the temperature change parameter is less than or equal to the preset temperature parameter, determine the first power composite grease coated at the connection position as the required power composite grease.

[0051] Specifically, the temperature change parameter can reflect the degree of temperature change at the connection location before and after the current temperature rise test. If the temperature change at the connection location before and after the current temperature rise test is large, it indicates that the first electrical composite grease is significantly affected by high-current operating conditions. That is, after operating at high current for a long time, the temperature of the connection location coated with the first electrical composite grease rises too quickly, causing abnormal heating of the equipment and affecting its safe use. Therefore, the first electrical composite grease applied when the temperature change at the connection location before and after the current temperature rise test is large is not selected. If the temperature change at the connection location before and after the current temperature rise test is small, it indicates that the first electrical composite grease is less affected by high-current operating conditions. That is, after operating at high current for a long time, the temperature of the connection location coated with the first electrical composite grease rises slowly, ensuring the normal operation of the copper busbar. Therefore, the first electrical composite grease applied when the temperature change at the connection location before and after the current temperature rise test is small is selected, and the first electrical composite grease applied when the temperature change at the connection location before and after the current temperature rise test is small is recorded as the required electrical composite grease. The required electrical composite grease is the electrical composite grease ultimately selected.

[0052] For example, after applying a first electrical composite grease to the copper busbar connection location, a determination is made as to whether a temperature variation parameter at the copper busbar connection location is less than or equal to a preset temperature parameter. If so, this indicates that the first electrical composite grease is less affected by high-current operating conditions, and the first electrical composite grease applied when the temperature variation parameter is less than or equal to the preset temperature parameter is determined as the required electrical composite grease. If the temperature variation parameter is greater than the preset temperature parameter, this indicates that the first electrical composite grease is less affected by high-current operating conditions, and the first electrical composite grease applied when the temperature variation parameter is greater than the preset temperature parameter is determined as an unqualified first electrical composite grease. Thus, when selecting electrical composite grease, environmental factors affecting thermal oxidative aging, as well as operating conditions under high current, are comprehensively considered to ensure that the final determined required electrical composite grease meets on-site requirements, avoiding issues such as accelerated aging, shortened lifespan, performance degradation, and abnormal heating of the equipment during use, thereby ensuring safety and cost-effectiveness in on-site use.

[0053] In summary, the embodiment of the present invention obtains the mass variation coefficient of a candidate electrical composite grease during a thermal-oxidative aging test, determines whether the mass variation coefficient is less than or equal to a preset coefficient, and determines the candidate electrical composite grease with a mass variation coefficient less than or equal to the preset coefficient as the first electrical composite grease. The temperature variation parameter of the copper busbar's connection location during a current-temperature-rise test is obtained, determines whether the temperature variation parameter is less than or equal to a preset temperature parameter, and determines the first electrical composite grease applied at the connection location when the temperature variation parameter is less than or equal to the preset temperature parameter as the required electrical composite grease. In this way, when selecting the electrical composite grease, the environmental impact factors of thermal-oxidative aging and the operating conditions under high current are comprehensively considered, so that the final required electrical composite grease meets the requirements for on-site use, thereby avoiding problems such as accelerated aging, shortened lifespan, performance degradation, and abnormal heating of the equipment during use of the electrical composite grease, thereby ensuring the safety and cost-effectiveness of on-site use.

[0054] Example 2

[0055] Figure 2 This is a flow chart of another method for selecting electric composite grease provided by an embodiment of the present invention, such as Figure 2 As shown, the selection method includes:

[0056] S210: Determine whether all parameters of the electric composite grease meet standard parameters, and determine the electric composite grease that meets the standard parameters as the electric composite grease to be selected.

[0057] Specifically, it is first necessary to determine whether the electric composite grease meets the "Technical Requirements for Electric Composite Greases." The parameters of the electric composite grease include its performance, technical requirements, test methods, inspection rules, labeling, packaging, storage, and transportation. For example, the performance or technical requirements for the electric composite grease include parameters such as its shrinkage resistance, membrane resistance, contact resistance stability factor, cold contact resistance, cone penetration, and evaporation rate. Each parameter has a corresponding standard parameter. The electric composite grease is then compared with its corresponding standard parameter, and the electric composite grease that meets all the standard parameters is identified as a candidate.

[0058] S220, obtaining a first quality parameter of the selected power composite grease before the thermal oxygen aging test, obtaining a second quality parameter of the selected power composite grease after the thermal oxygen aging test, and determining a quality variation coefficient based on the first quality parameter, the second quality parameter, and the first calculation formula.

[0059] Specifically, the thermal oxidative aging test is to place the selected power composite grease at a preset temperature and perform a test for a first preset time. Exemplarily, the selected power composite grease is placed at 150°C and tested for 600 hours. The first quality parameter of the selected power composite grease before the thermal oxidative aging test is obtained, and the second quality parameter of the selected power composite grease after the thermal oxidative aging test is obtained. The first quality parameter and the second quality parameter are substituted into the first calculation formula to determine the quality variation coefficient. The first calculation formula includes:

[0060] K1=(G1-G2) / G1

[0061] Where G1 is the first quality parameter, G2 is the second quality parameter, and K1 is the quality variation coefficient. This is calculated by calculating the ratio of the mass change of the candidate electrical composite grease before and after the thermal oxidative aging test to the first quality parameter of the candidate electrical composite grease before the thermal oxidative aging test to obtain the quality variation coefficient. The quality variation coefficient reflects the degree of quality change of the candidate electrical composite grease before and after the thermal oxidative aging test.

[0062] S230: Determine whether the mass variation coefficient is less than or equal to a preset coefficient, and determine the candidate power composite resin whose mass variation coefficient is less than or equal to the preset coefficient as the first power composite resin.

[0063] Specifically, the preset coefficient can be 1.5%, that is, when the mass change coefficient is less than or equal to 1.5%, it indicates that the mass change of the candidate electric composite grease before and after the thermal oxygen aging test is small, and the candidate electric composite grease with a mass change coefficient less than or equal to 1.5% is determined as the first electric composite grease. If the mass change coefficient is greater than 1.5%, it indicates that the mass change of the candidate electric composite grease before and after the thermal oxygen aging test is large, and the candidate electric composite grease with a mass change coefficient greater than 1.5% is determined as an unqualified candidate electric composite grease.

[0064] S240, obtaining a first temperature parameter of the connection position before the current temperature rise test, obtaining a second temperature parameter of the connection position after the current temperature rise test, and determining a temperature change parameter according to the first temperature parameter, the second temperature parameter, and a second calculation formula.

[0065] Specifically, the first electrical composite grease is coated on the connection position of adjacent copper busbars as required, wherein the copper busbar can be a single-layer 120mm×10mm copper busbar, and the studs at the connection position of the copper busbar are tightened according to the standard torque. The first electrical composite grease is subjected to a current temperature rise test, and the current temperature rise test is a test after applying a preset current to the copper busbar and energizing it for a second preset time. Exemplarily, an 1800A current is applied to the copper busbar coated with the first electrical composite grease, and a test is performed after energizing it for 5 hours. Before the current temperature rise test, the first electrical composite grease is coated on the connection position of the copper busbar, and the first temperature parameter of the connection position is obtained. After the current temperature rise test is performed, the second temperature parameter of the connection position is obtained, and the first temperature parameter and the second temperature parameter are substituted into the second calculation formula to determine the mass variation coefficient. The second calculation formula includes:

[0066] K2=T2-T1

[0067] Where T1 is the first temperature parameter, T2 is the second temperature parameter, and K2 is the temperature change parameter. This parameter is calculated by calculating the temperature change at the connection location coated with the first electrical composite grease before and after the current temperature rise test. The temperature change parameter reflects the degree of temperature change at the connection location before and after the current temperature rise test.

[0068] S250: Determine whether the temperature change parameter is less than or equal to the preset temperature parameter, and when the temperature change parameter is less than or equal to the preset temperature parameter, determine the first power composite grease coated at the connection position as the required power composite grease.

[0069] Specifically, according to the "Common Technical Requirements for High-Voltage Switchgear and Control Equipment Standards," the temperature rise of the copper busbar should not exceed 50K, so the preset temperature parameter can be 50K. K is the unit of Kelvin temperature, which can represent temperatures under extreme conditions such as low temperature, ultra-low temperature, and high temperature.

[0070] After the first power composite grease is coated on the connection position of the copper busbar, it is determined whether the temperature change parameter of the connection position of the copper busbar is less than or equal to 50K. If the temperature change parameter is less than or equal to 50K, it indicates that the first power composite grease is less affected by the high current operating condition, and the first power composite grease coated when the temperature change parameter is less than or equal to 50K is determined as the required power composite grease. If the temperature change parameter is greater than 50K, it indicates that the first power composite grease is less affected by the high current operating condition, and the first power composite grease coated when the temperature change parameter is greater than 50K is determined as the unqualified first power composite grease.

[0071] In summary, the embodiment of the present invention obtains the first quality parameter of the selected power composite grease before the thermal oxygen aging test, obtains the second quality parameter of the selected power composite grease after the thermal oxygen aging test, determines the quality variation coefficient according to the first quality parameter, the second quality parameter and the first calculation formula, and obtains the first temperature parameter of the connection position before the current temperature rise test, obtains the second temperature parameter of the connection position after the current temperature rise test, and determines the temperature variation parameter according to the first temperature parameter, the second temperature parameter and the second calculation formula. In this way, the quality variation coefficient and the temperature variation parameter are respectively obtained through the calculation formula, and the acquisition method is simple and convenient, which facilitates the subsequent comprehensive consideration of the environmental influencing factors of thermal oxygen aging and the operating conditions under large current to select the power composite grease.

[0072] Example 3

[0073] Figure 3 This is a schematic diagram of the structure of a device for selecting electric composite grease provided by an embodiment of the present invention. The embodiment of the present invention is applicable to the selection of electric composite grease. The specific structure of the device is as follows:

[0074] The first acquisition module 10 is used to obtain the quality variation coefficient of the selected power composite grease in the thermal oxidation aging test.

[0075] The first judgment module 20 is used to judge whether the mass variation coefficient is less than or equal to a preset coefficient, and determine the candidate power composite resin with a mass variation coefficient less than or equal to the preset coefficient as the first power composite resin.

[0076] The second acquisition module 30 is used to acquire temperature variation parameters of the connection position of the copper busbar during the current temperature rise test, wherein the connection position is coated with a first power composite grease.

[0077] The second judgment module 40 is used to judge whether the temperature change parameter is less than or equal to the preset temperature parameter, and determine the first power composite grease coated at the connection position as the required power composite grease when the temperature change parameter is less than or equal to the preset temperature parameter.

[0078] The selection device includes a third judgment module, which is used to judge whether various parameters of the electric composite grease meet standard parameters, and determine the electric composite grease whose various parameters meet the standard parameters as the electric composite grease to be selected.

[0079] The first acquisition module 10 is specifically used to obtain a first quality parameter of the selected power composite grease before the thermal oxidative aging test, obtain a second quality parameter of the selected power composite grease after the thermal oxidative aging test, and determine a quality variation coefficient based on the first quality parameter, the second quality parameter, and a first calculation formula, wherein the thermal oxidative aging test includes testing the selected power composite grease at a preset temperature for a first preset time. The first calculation formula includes:

[0080] K1=(G1-G2) / G1

[0081] Among them, G1 is the first quality parameter, G2 is the second quality parameter, and K1 is the quality variation coefficient.

[0082] The second acquisition module 30 is specifically configured to acquire a first temperature parameter of the connection location before the current temperature rise test, acquire a second temperature parameter of the connection location after the current temperature rise test, and determine a temperature change parameter based on the first temperature parameter, the second temperature parameter, and a second calculation formula. The current temperature rise test includes testing the copper busbar under a preset current for a second preset time. The second calculation formula includes:

[0083] K2=T2-T1

[0084] Wherein, T1 is a first temperature parameter, T2 is a second temperature parameter, and K2 is a temperature change parameter. In addition, the preset coefficient includes 1.5%, and the preset temperature parameter includes 50K.

[0085] In summary, the embodiment of the present invention uses a first acquisition module to obtain the mass variation coefficient of the candidate power composite grease in the thermal oxidative aging test. The first judgment module determines whether the mass variation coefficient is less than or equal to the preset coefficient, and determines the candidate power composite grease with a mass variation coefficient less than or equal to the preset coefficient as the first power composite grease. The second acquisition module obtains the temperature variation parameter of the copper busbar's connection position in the current temperature rise test. The second judgment module 40 determines whether the temperature variation parameter is less than or equal to the preset temperature parameter, and determines the first power composite grease coated at the connection position as the required power composite grease when the temperature variation parameter is less than or equal to the preset temperature parameter. In this way, when selecting the power composite grease, the environmental impact factors of thermal oxidative aging and the operating conditions under high current are comprehensively considered, so that the final required power composite grease meets the requirements for on-site use, thereby avoiding problems such as accelerated aging, shortened life, performance degradation, and abnormal heating of the equipment during use of the power composite grease, thereby ensuring the safety and economy of on-site use.

[0086] Example 4

[0087] Figure 4 1 is a schematic diagram of the structure of a selection device for an electric composite resin provided in an embodiment of the present invention. The selection device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The selection device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0088] like Figure 4 As shown, the selection device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 and a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores a computer program executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the read-only memory (ROM) 12 or loaded from the storage unit 18 into the random access memory (RAM) 13. RAM 13 can also store various programs and data required for the operation of the selection device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0089] Various components in the selection device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard and mouse; an output unit 17, such as various types of displays and speakers; a storage unit 18, such as a magnetic disk and optical disk; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the selection device 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0090] The processor 11 may be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above.

[0091] In some embodiments, the selection method can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on selection device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the control method described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the control method in any other suitable manner (e.g., via firmware).

[0092] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0093] Example 5

[0094] The fifth embodiment of the present invention further provides a storage medium containing computer-executable instructions. When the computer-executable instructions are executed by a computer processor, the computer-executable instructions are used to perform a method for selecting an electric composite grease. The method includes:

[0095] Obtain the quality variation coefficient of the selected power compound grease in the thermal oxygen aging test;

[0096] Determine whether the mass variation coefficient is less than or equal to a preset coefficient, and determine the candidate power composite grease having a mass variation coefficient less than or equal to the preset coefficient as the first power composite grease;

[0097] Obtaining temperature variation parameters of a connection position of the copper busbar during a current temperature rise test, wherein the connection position is coated with a first electrical composite grease;

[0098] It is determined whether the temperature change parameter is less than or equal to the preset temperature parameter, and when the temperature change parameter is less than or equal to the preset temperature parameter, the first power composite grease coated at the connection position is determined as the required power composite grease.

[0099] Of course, the computer executable instructions of the storage medium provided by the embodiment of the present invention are not limited to the operations of the method described above, but can also execute related operations in the selection method provided by any embodiment of the present invention.

[0100] Through the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented with the help of software and necessary general-purpose hardware, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0101] It is worth noting that in the embodiment of the above-mentioned search device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0102] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for selecting electric composite grease, characterized in that: The selection method includes: Obtain the quality variation coefficient of the selected power compound grease in the thermal oxygen aging test; Determining whether the mass variation coefficient is less than or equal to a preset coefficient, and determining the selected power composite resin having the mass variation coefficient less than or equal to the preset coefficient as the first power composite resin; Obtaining a temperature variation parameter of a connection position of the copper busbar during a current temperature rise test, wherein the connection position is coated with the first power composite grease; determining whether the temperature change parameter is less than or equal to a preset temperature parameter, and determining the first power composite grease coated at the connection position as the required power composite grease when the temperature change parameter is less than or equal to the preset temperature parameter; The method of obtaining the mass variation coefficient of the selected electric composite grease in the thermal oxidation aging test includes: Obtaining a first quality parameter of the selected power composite grease before a thermal oxidation aging test; Obtaining a second quality parameter of the selected power composite grease after a thermal oxidation aging test; Determining a quality variation coefficient based on the first quality parameter, the second quality parameter, and a first calculation formula, wherein the thermal oxidation aging test includes testing the selected power composite grease at a preset temperature for a first preset time; The first calculation formula includes: K1=(G1-G2) / G1 Wherein, G1 is the first quality parameter, G2 is the second quality parameter, and K1 is the quality variation coefficient; The obtaining of the temperature change parameter of the connection position during the current temperature rise test includes: Obtaining a first temperature parameter of the connection position before a current temperature rise test; Obtaining a second temperature parameter of the connection position after the current temperature rise test; Determining the temperature change parameter according to the first temperature parameter, the second temperature parameter, and a second calculation formula, wherein the current temperature rise test includes testing the copper busbar under a preset current and energizing it for a second preset time; The second calculation formula includes: K2=T2-T1 Wherein, T1 is the first temperature parameter, T2 is the second temperature parameter, and K2 is the temperature change parameter.

2. The selection method according to claim 1, characterized in that: Before obtaining the quality change coefficient of the candidate power compound grease in the thermal oxidative aging test, it also includes: It is determined whether all parameters of the electric composite grease meet standard parameters, and the electric composite grease whose parameters meet the standard parameters is determined as the to-be-selected electric composite grease.

3. The selection method according to claim 1, characterized in that: The preset coefficient includes 1.5%, and the preset temperature parameter includes 50K.

4. A device for selecting electric composite grease, characterized in that: include: The first acquisition module is used to obtain the mass variation coefficient of the selected power composite grease in the thermal oxygen aging test; A first judgment module is configured to judge whether the mass variation coefficient is less than or equal to a preset coefficient, and determine the candidate power composite resin having the mass variation coefficient less than or equal to the preset coefficient as the first power composite resin; a second acquisition module, configured to acquire a temperature variation parameter of a connection position of the copper busbar during a current temperature rise test, wherein the connection position is coated with the first power composite grease; a second judgment module, configured to judge whether the temperature change parameter is less than or equal to a preset temperature parameter, and determine the first power composite grease coated at the connection position as the required power composite grease when the temperature change parameter is less than or equal to the preset temperature parameter; The first acquisition module is specifically used to obtain a first quality parameter of the selected power composite grease before the thermal oxygen aging test, obtain a second quality parameter of the selected power composite grease after the thermal oxygen aging test, and determine a quality variation coefficient based on the first quality parameter, the second quality parameter, and a first calculation formula, wherein the thermal oxygen aging test includes testing the selected power composite grease at a preset temperature for a first preset time; The first calculation formula includes: K1=(G1-G2) / G1 Wherein, G1 is the first quality parameter, G2 is the second quality parameter, and K1 is the quality variation coefficient; The second acquisition module is specifically configured to acquire a first temperature parameter of the connection position before a current temperature rise test, acquire a second temperature parameter of the connection position after the current temperature rise test, and determine a temperature change parameter based on the first temperature parameter, the second temperature parameter, and a second calculation formula, wherein the current temperature rise test includes testing the copper busbar under a preset current for a second preset time; The second calculation formula includes: K2=T2-T1 Wherein, T1 is the first temperature parameter, T2 is the second temperature parameter, and K2 is the temperature change parameter.

5. A selection device for electric composite grease, characterized in that: The selected equipment includes: one or more processors; a storage device for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the selection method according to any one of claims 1 to 3.

6. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the selection method according to any one of claims 1 to 3 is implemented.

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