Method and device for detecting power composite fat, electronic equipment and storage medium

Abstract

This invention discloses a method, apparatus, electronic device, and storage medium for testing electrical composite grease. The method includes: acquiring initial values ​​of performance parameters of the electrical composite grease to be tested; performing a breakdown discharge test on the electrical composite grease to be tested, and detecting real-time acquired values ​​of the performance parameters of the electrical composite grease to be tested during the breakdown discharge process, as the discharge values ​​of the performance parameters; stopping the breakdown discharge test when the change in the discharge values ​​of the performance parameters is less than or equal to a preset threshold for the change in discharge values, and detecting real-time acquired values ​​of the performance parameters of the electrical composite grease to be tested during the recovery process and the corresponding recovery time, as the recovery values ​​of the performance parameters and the corresponding recovery time; and determining the self-healing performance test result of the electrical composite grease to be tested based on the initial values ​​of the performance parameters, the discharge values, the recovery values, and the corresponding recovery time. The technical solution of this invention improves the comprehensiveness of electrical composite grease testing.

Description

Technical Field

[0001] This invention relates to the field of power distribution network technology, and in particular to a method, apparatus, electronic device, and storage medium for detecting electrical compound grease. Background Technology

[0002] Overheating at primary equipment joints is one of the main defects in electrical equipment. The cause of this overheating is an abnormally increased contact resistance. Common solutions include grinding the joint surface after a power outage, applying electrical grease, and tightening the joint screws. Electrical grease is the most widely used solution. Aging and failure of the electrical grease lead to increased contact resistance, resulting in frequent equipment maintenance. Therefore, the testing of electrical grease is particularly important.

[0003] Currently, the main testing methods for electrical composite greases include: cone penetration test, dropping point test, pH value determination, paste corrosion test, evaporation test, contact resistance stability coefficient test, salt spray test, chemical corrosion resistance test, low temperature test, and temperature rise test.

[0004] However, the detection of electrical composite grease using the above-mentioned testing methods is not comprehensive. Summary of the Invention

[0005] This invention provides a method, apparatus, electronic device, and storage medium for detecting electrical composite grease, thereby improving the comprehensiveness of electrical composite grease detection.

[0006] According to one aspect of the present invention, a method for detecting electrical compound grease is provided, comprising:

[0007] Initial values ​​of the performance parameters of the electrical composite grease to be tested are obtained; wherein, the performance parameters include at least one of surface parameters, conductivity parameters, crosslinking degree parameters, and mechanical parameters;

[0008] The electrical composite grease to be tested is subjected to a breakdown discharge test, and the real-time acquired values ​​of the performance parameters of the electrical composite grease to be tested during the breakdown discharge process are detected as the discharge values ​​of the performance parameters.

[0009] When the change in the discharge value of the performance parameter is less than or equal to the preset discharge value change threshold, the breakdown discharge test is stopped, and the real-time acquisition value of the performance parameter and the corresponding recovery time of the test power composite grease during the recovery process are detected as the recovery value and the corresponding recovery time of the performance parameter.

[0010] The self-healing performance test result of the electrical composite grease to be tested is determined based on the initial value of the performance parameter, the discharge value, the recovery value, and the corresponding recovery time.

[0011] According to another aspect of the present invention, an electrical compound grease detection device is provided, comprising:

[0012] An initial performance parameter module is used to obtain initial values ​​of the performance parameters of the electrical composite grease to be tested; wherein, the performance parameters include at least one of surface parameters, conductivity parameters, crosslinking degree parameters, and mechanical parameters;

[0013] The discharge performance parameter detection module is used to perform a breakdown discharge test on the electrical composite grease to be tested, and to detect the real-time acquisition value of the performance parameters of the electrical composite grease to be tested during the breakdown discharge process, which is used as the discharge value of the performance parameters.

[0014] The recovery performance parameter detection module is used to stop the breakdown discharge test when the change in the discharge value of the performance parameter is less than or equal to a preset discharge value change threshold, and to detect the real-time acquisition value of the performance parameter and the corresponding recovery time of the test power composite grease during the recovery process, as the recovery value and the corresponding recovery time of the performance parameter.

[0015] The self-healing performance test result determination module is used to determine the self-healing performance test result of the electrical composite grease to be tested based on the initial value of the performance parameter, the discharge value, the recovery value and the corresponding recovery time.

[0016] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0017] At least one processor; and

[0018] A memory communicatively connected to the at least one processor; wherein,

[0019] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the electrical compound grease detection method according to any embodiment of the present invention.

[0020] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the electrical compound grease detection method according to any embodiment of the present invention.

[0021] The technical solution of this invention obtains the initial values ​​of the performance parameters of the electrical composite grease to be tested, performs a breakdown discharge test on the electrical composite grease, and detects the real-time acquired values ​​of the performance parameters of the electrical composite grease during the breakdown discharge process as the discharge values ​​of the performance parameters. When the change in the discharge values ​​of the performance parameters is less than or equal to a preset threshold for the change in discharge values, the breakdown discharge test is stopped. The real-time acquired values ​​of the performance parameters of the electrical composite grease to be tested and the corresponding recovery time are detected during the recovery process and are used as the recovery values ​​of the performance parameters and the corresponding recovery time. Based on the initial values ​​of the performance parameters, the discharge values, the recovery values, and the corresponding recovery times, the self-healing performance test result of the electrical composite grease to be tested is determined. This solves the problem that the existing detection methods for electrical composite grease are not comprehensive, and improves the comprehensiveness of electrical composite grease detection.

[0022] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a flowchart of a method for detecting electrical composite grease according to Embodiment 1 of the present invention;

[0025] Figure 2 This is a flowchart of a method for detecting electrical composite grease according to Embodiment 2 of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of an electrical compound grease detection device according to Embodiment 3 of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of an electronic device that implements the electrical compound grease detection method of this invention. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Example 1

[0031] Figure 1 This is a flowchart illustrating a method for detecting electrical composite grease according to Embodiment 1 of the present invention. This embodiment of the invention is applicable to situations involving the detection of electrical composite grease. The method can be executed by an electrical composite grease detection device, which can be implemented in hardware and / or software and can be configured in an electronic device that performs electrical composite grease detection functions.

[0032] See Figure 1 The method for detecting electrical compound grease shown includes:

[0033] S110. Obtain initial values ​​of the performance parameters of the electrical composite grease to be tested; wherein, the performance parameters include at least one of surface parameters, conductivity parameters, crosslinking degree parameters, and mechanical parameters.

[0034] Abnormal overheating of primary equipment joints is one of the main defects in electrical equipment. This overheating is particularly frequent in summer. The cause is an abnormally increased contact resistance. Common solutions include grinding the joint surface after a power outage, applying electrical grease, and tightening the joint screws. Applying electrical grease is the most widely used method. Electrical grease, also known as conductive paste, is a neutral conductive coating with good electrical contact properties. It can be used at the contact surfaces of high and low voltage electrical busbars and various electrical joints, significantly reducing contact resistance and thus saving energy. Electrical grease must meet the following requirements: high temperature resistance, moisture resistance, oxidation resistance, mildew resistance, chemical corrosion resistance, non-flowing at high temperatures, non-cracking at low temperatures, stable physical and chemical properties, and long service life. However, under certain temperature, moisture, oxygen, and ultraviolet light conditions, electrical grease is prone to aging and hardening, eventually peeling off and losing its sealing and thermal conductivity. Simultaneously, the aging and failure of electrical grease also increases contact resistance, leading to frequent equipment maintenance. Therefore, the testing of electrical grease is particularly important. Currently, the main testing methods for electrical composite greases include cone penetration testing, dropping point testing, pH value determination, paste corrosion testing, evaporation rate testing, contact resistance stability coefficient testing, salt spray testing, chemical corrosion resistance testing, low temperature testing, and temperature rise testing, but none of these methods can characterize the self-healing properties of electrical composite greases.

[0035] The components of the electro-hydraulic grease to be tested may include additives containing reactive functional groups. During operation, the electro-hydraulic grease undergoes certain chemical reactions due to the influence of electric fields, thermal fields, and oxidative environments, giving it self-healing properties. For example, the chemical reactions of the electro-hydraulic grease mainly include: ① Cross-linking reaction: When the additives in the electro-hydraulic grease are silanols and acrylic acids, cross-linking polymerization can occur on the surface of the grease. The resulting macromolecular network structure can seal cracks, repairing minor defects (e.g., microcracks) formed on the grease by the electric field. Simultaneously, the additives themselves also possess certain electrical properties, allowing them to continue functioning as a dielectric. ② Chain growth reaction similar to free radical polymerization: The electric field causes free radicals to be generated in the electro-hydraulic grease. These free radicals undergo addition reactions with molecular chains, causing the chain segments to grow continuously, generating high-molecular-weight cross-linked products to repair damage to the electro-hydraulic grease. ③ Bond exchange reaction due to localized high temperature: When the electro-hydraulic grease experiences localized discharge, high temperatures are generated, causing dynamic bond exchange in the molecular chains. This process facilitates chain segment rearrangement to achieve a more stable state and can also repair small cracks caused by thermal damage to some extent. ④ Macromolecular products generated by oxidation: During use, the electrical composite grease inevitably encounters oxygen. The macromolecular products generated by oxidation, existing in a cross-linked form, can also fill micro-cracks and continue to exert certain electrical properties. Based on the principles of the above chemical reactions, suitable additives can be selected to promote a continuous self-healing reaction during use, replenishing the various micro-damage generated during operation, thereby greatly improving the product's service life and stability. Optionally, the electrical composite grease to be tested may include electrical composite grease that has been manufactured and is ready for shipment or electrical composite grease currently in use in the field environment.

[0036] Performance parameters can be used to characterize the performance of the electro-hydraulic composite grease. Optionally, performance parameters may include at least one of surface parameters, conductivity parameters, crosslinking degree parameters, and mechanical parameters. Surface parameters can be used to characterize the surface condition of the electro-hydraulic composite grease under test. For example, surface parameters may include surface defects and surface color. Surface defects may include cracks and voids on the surface, cross-section, or fracture surface. Conductivity parameters can be used to characterize the conductivity of the electro-hydraulic composite grease under test. For example, conductivity parameters may include volume resistivity and volume conductivity. Crosslinking degree parameters can be used to characterize the degree of crosslinking of the electro-hydraulic composite grease under test. For example, crosslinking degree parameters may include Joule heat value. Mechanical parameters can be used to characterize the mechanical properties of the electro-hydraulic composite grease under test. For example, mechanical parameters may include hardness and tensile strength. The initial values ​​of the performance parameters may be values ​​collected before the self-healing performance test of the electro-hydraulic composite grease under test. The initial values ​​of the performance parameters can serve as reference values ​​for the test of the electro-hydraulic composite grease under test.

[0037] Specifically, a testing device can be used to test the electrical composite grease to obtain the initial values ​​of its performance parameters.

[0038] S120. Perform a breakdown discharge test on the electrical composite grease to be tested, and collect the real-time values ​​of the performance parameters of the electrical composite grease to be tested during the breakdown discharge process, which are used as the discharge values ​​of the performance parameters.

[0039] The discharge values ​​of the performance parameters can be the real-time acquired values ​​of the performance parameters of the electrical composite grease under test during the breakdown discharge test. The discharge values ​​of the performance parameters can be used to characterize the performance of the electrical composite grease under test during the breakdown discharge process.

[0040] Specifically, a high-voltage power supply can be used to continuously energize the electrical composite grease under test, thereby achieving a breakdown discharge test. A detection device can be used to collect the performance parameters of the electrical composite grease under test in real time during the breakdown discharge test, obtaining the real-time collected values ​​of the performance parameters of the electrical composite grease under test during the breakdown discharge process, which are used as the discharge values ​​of the performance parameters.

[0041] S130. When the change in the discharge value of the performance parameter is less than or equal to the preset discharge value change threshold, stop the breakdown discharge test, and detect the real-time acquisition value of the performance parameter and the corresponding recovery time of the test power compound grease during the recovery process, as the recovery value and corresponding recovery time of the performance parameter.

[0042] The preset discharge value change can be the maximum value of the discharge value change of the performance parameter of the electrical composite grease under test during the breakdown discharge process. The preset discharge value change can be set and adjusted by technicians based on experience. The change in the discharge value of the performance parameter can be used to characterize the change in the performance parameter of the electrical composite grease under test during the breakdown discharge process. If the change in the discharge value of the performance parameter is less than or equal to the preset discharge value change threshold, it can be understood that the change in the discharge value of the performance parameter tends to be stable. The performance parameter recovery value can be the real-time acquired value of the performance parameter of the electrical composite grease under test during the recovery process. The discharge value of the performance parameter can be used to characterize the performance of the electrical composite grease under test during the recovery process. The recovery time can be used to characterize the recovery speed of the electrical composite grease under test.

[0043] Specifically, the difference between the discharge value of the performance parameter collected at the current moment and the discharge value of the performance parameter collected at the previous moment can be calculated to obtain the change in the discharge value of the performance parameter at each moment. The change in the discharge value of the performance parameter can be compared with a preset threshold for the change in the discharge value. The breakdown discharge test is stopped when the change in the discharge value of the performance parameter is less than or equal to the preset threshold. A detection device can be used to collect the performance parameters of the electrical composite grease under test in real time during the recovery process, obtaining the real-time collected values ​​of the performance parameters and the corresponding recovery time, which are used as the discharge value and corresponding recovery time of the performance parameter. Optionally, different performance parameters may have different preset thresholds for the change in the discharge value.

[0044] S140. Based on the initial value, discharge value, recovery value and corresponding recovery time of the performance parameters, determine the self-healing performance test results of the electrical composite grease to be tested.

[0045] The self-healing performance test results can be either pass or fail. These results can be used to characterize whether the self-healing performance of the tested electrical composite grease meets the usage requirements.

[0046] Specifically, the initial values ​​and discharge values ​​of the performance parameters can be compared to obtain the test result of the degree of performance change of the electrical composite grease under test. The test result of the degree of performance recovery of the electrical composite grease under test can be determined based on the initial values, recovery values, and corresponding recovery times of the performance parameters. Optionally, if the test result of the degree of performance recovery of the electrical composite grease under test is passed, then the test result of the self-healing performance of the electrical composite grease under test is passed. Optionally, if both the test results of the degree of performance recovery and the test results of the degree of performance change of the electrical composite grease under test are passed, then the test result of the self-healing performance of the electrical composite grease under test is passed.

[0047] The technical solution of this invention obtains the initial values ​​of the performance parameters of the electrical composite grease to be tested, performs a breakdown discharge test on the electrical composite grease, and detects the real-time acquired values ​​of the performance parameters of the electrical composite grease during the breakdown discharge process as the discharge values ​​of the performance parameters. When the change in the discharge values ​​of the performance parameters is less than or equal to a preset threshold for the change in discharge values, the breakdown discharge test is stopped. The real-time acquired values ​​of the performance parameters and the corresponding recovery time of the electrical composite grease during the recovery process are then detected as the recovery values ​​of the performance parameters and the corresponding recovery time. Based on the initial values ​​of the performance parameters, the discharge values, the recovery values, and the corresponding recovery times, the self-healing performance test results of the electrical composite grease to be tested are determined. This supplements the detection of the self-healing performance of electrical composite greases, solves the problem that existing detection methods are not comprehensive in detecting electrical composite greases, and improves the comprehensiveness of electrical composite grease detection.

[0048] In an optional embodiment of the present invention, performing a breakdown discharge test on the electrical composite grease to be tested includes: acquiring a first voltage value; applying a voltage to the electrical composite grease to be tested based on the first voltage value; the first voltage value being a gradually increasing high voltage value; detecting the corresponding first voltage value when the electrical composite grease to be tested is detected to be broken down, and calculating a second voltage value; the second voltage value being less than the first voltage value; the second voltage value being a constant value; and applying a voltage to the electrical composite grease to be tested based on the second voltage value.

[0049] The first voltage value can be the initial voltage value for performing a breakdown discharge test on the electrical composite grease under test. Optionally, the first voltage value can be set and adjusted by a technician based on experience. The first voltage value is a high-voltage value. The first voltage value gradually increases over time. For example, the first voltage value can be gradually increased according to a preset step size until the electrical composite grease under test is broken down by the high voltage. The second voltage value is less than the first voltage value. For example, the second voltage value can be 80% of the first voltage value. The second voltage value is a constant value.

[0050] This solution replicates the extreme operating conditions of electrical composite grease in the field by performing breakdown discharge tests. By detecting the breakdown state of the electrical composite grease and adjusting the voltage applied to it, the extreme operating conditions are reproduced, further improving the accuracy of the self-healing performance test of the electrical composite grease.

[0051] In an optional embodiment of the present invention, after determining the self-healing performance test result of the electrical composite grease to be tested, the method further includes: if the self-healing performance test result is unsuccessful, replacing the electrical composite grease in the field environment corresponding to the electrical composite grease to be tested.

[0052] The electrical grease to be tested can be the electrical grease currently in use in the field environment. For example, the electrical grease to be tested may include the electrical grease at the primary equipment joint or the electrical grease at the contact surface of the high and low voltage electrical busbar lap joint, etc.

[0053] Optionally, if the self-healing performance test result of the electrical composite grease to be tested fails, the location of the corresponding field environment of the electrical composite grease to be tested is determined. If the electrical composite grease to be tested is the electrical composite grease at the primary equipment joint, then the electrical composite grease at the primary equipment joint corresponding to the electrical composite grease to be tested is replaced; if the electrical composite grease to be tested is the electrical composite grease at the contact surface of the high- and low-voltage electrical busbar overlap, then the electrical composite grease at the contact surface of the high- and low-voltage electrical busbar overlap corresponding to the electrical composite grease to be tested is replaced. In this way, the self-healing performance of the electrical composite grease currently in use in the field environment is ensured, thereby guaranteeing the conductivity, thermal conductivity, and sealing performance of the electrical composite grease in the field environment.

[0054] In an optional embodiment of the present invention, the surface parameters include surface defects; the electrical conductivity parameters include volume resistivity; the crosslinking degree parameters include Joule heating value; and the mechanical parameters include at least one of hardness and tensile strength.

[0055] Surface parameters may include surface defects. Surface defects may include surface cracks or cavities. Optionally, the changes in cracks or cavities in the electrical composite grease under test can be detected before and after the breakdown discharge test. For electrical composite greases with good self-healing properties, surface defects generated during the breakdown discharge test will be significantly reduced or repaired within a certain period of time during the recovery process.

[0056] For example, the evaluation criteria for surface defects in the electrical composite grease to be tested are as follows: after being subjected to an electric field of a certain intensity, the change in the discharge value of surface defects such as cracks and voids appearing on the surface and cross-section of the electrical composite grease to be tested is within the range of 20%-50%. After the electric field is removed, the recovery value of the surface defects is greater than or equal to 80%, and the corresponding recovery time is within 24 hours.

[0057] Specifically, the testing process for surface defects in the electrical composite grease to be tested is as follows:

[0058] (1) Scanning electron microscopy can be used to examine the surface and cross-section images of the electrical composite grease to be tested before the breakdown discharge test, and the initial value x0 of the surface defects can be used as a reference. Wherein, the initial value of the surface defects is the initial value of the number of surface defects.

[0059] (2) Perform a breakdown discharge test on the electrical composite grease to be tested. Connect a high voltage power supply, apply a certain electric field strength, and continue for 1-2 hours. During this period, measure the discharge value x1 of the surface defect every 10-15 minutes until the discharge value x1 of the surface defect tends to stabilize. Stop the power supply and check whether the change in the surface defect is between 20% and 50%.

[0060] (3) After power is turned off, images of the surface and cross-section of the electrical composite grease to be tested are repeatedly acquired within 2 hours and 8-12 hours. The recovery value of the surface defect is x2, and the recovery degree R of the surface defect is calculated. x = (x2-x1 / x1-x0)×100%, and determine whether it is the degree of surface defect recovery R. x ≥80%.

[0061] (4) Record the recovery time t corresponding to the degree of recovery of surface defects. x The detection function checks whether the recovery time for a surface defect recovery rate of over 80% is within 24 hours.

[0062] Conductivity parameters may include volume resistivity. Optionally, the electrical composite grease to be tested can be made into a standard shape, and the initial value of the volume resistivity can be measured. Then, a certain electric field strength is applied to the electrical composite grease to be tested through continuous discharge, at which point the volume resistivity decreases. After the breakdown discharge test is stopped, the recovery of volume resistivity over time is measured. A higher degree of recovery and a shorter recovery time indicate that the product has good self-healing properties.

[0063] For example, the evaluation criterion for the volume resistivity of the electrical composite grease to be tested is: after being subjected to an electric field of a certain intensity, the decrease in volume resistivity is controlled between 20% and 50%. After the electric field is stopped, the volume resistivity recovers to more than 80% of the initial value, with the corresponding recovery time being within 24 hours.

[0064] Specifically, the testing process for the resistivity of the electrical composite grease to be tested is as follows:

[0065] (1) Prepare electrical composite grease of uniform shape and size to be tested and record the corresponding size parameters.

[0066] (2) Place the electrical composite grease to be tested between the two electrodes. The initial value of the resistivity of the body can be detected by using an LCR (Liquid Conductivity Ratio) meter.

[0067] (3) Perform a breakdown discharge test on the electrical composite grease to be tested. Connect a high-voltage power supply, apply a certain electric field strength, and continue for 1-2 hours. During this period, measure the discharge value ρ1 of the volume resistivity every 10-15 minutes until the discharge value ρ1 of the volume resistivity tends to stabilize. Stop the power supply and check whether the change in volume resistivity is within 20-50%.

[0068] (4) After the power is turned off, measure the recovery value ρ2 of the volume resistivity every 2 hours and calculate the degree of recovery R of the volume resistivity. ρ = (ρ2 / ρ0)×100%, and determine whether the degree of recovery of volume resistivity R is the same. ρ ≥80%.

[0069] (5) Record the recovery time t corresponding to the degree of recovery of volume resistivity. ρ The recovery time t corresponds to a volume resistivity recovery rate of over 80%. ρ Is it within 24 hours?

[0070] Crosslinking degree parameters may include Joule heating value. Optionally, the Joule heating value of the tested electrical composite grease before and after the breakdown discharge test can be measured using infrared spectroscopy or solvent extraction. Due to the crosslinking reaction, the Joule heating value of the tested electrical composite grease will gradually increase over time and tend to stabilize after a certain period. The change in the Joule heating value of the tested electrical composite grease can indirectly reflect its self-healing performance.

[0071] For example, the evaluation criteria for the Joule heat value of the electrical composite grease to be tested are: the change in Joule heat value during discharge does not exceed ±20%. After the discharge stops, the recovery rate of Joule heat value is greater than or equal to 90%, and the corresponding recovery time is within 24 hours.

[0072] Specifically, the testing process for the Joule calorific value of the electrical composite grease to be tested is as follows:

[0073] (1) Prepare samples with uniform shape and size, and measure the initial value of the Joule calorific value as Q0.

[0074] (2) Perform a breakdown discharge test on the electrical composite grease to be tested. Connect a high voltage power supply, apply a certain electric field strength, and continue for 1-2 hours. During this period, measure the discharge value Q1 of the Joule heat value every 10-15 minutes until the discharge value Q1 of the Joule heat value tends to stabilize. Stop the power supply, measure the discharge value Q1 of the Joule heat value, and check whether the change in the Joule heat value is ≤±20%.

[0075] (3) Stop the power supply for 2-24 hours, measure the recovery value Q2 of the Joule heat value, and calculate the degree of recovery R of the Joule heat value. Q = (Q2-Q1) / (Q0-Q1)×100%, and check whether the degree of recovery of the Joule heat value R is positive. Q ≥90%.

[0076] (4) Record recovery time t c The detection method checks whether the recovery time corresponding to a Joule heat value recovery of over 90% is within 24 hours.

[0077] Mechanical parameters may include hardness and / or tensile strength. Optionally, mechanical parameters such as hardness and / or tensile strength of the electrical composite grease under test can be measured before and after the breakdown discharge test. The mechanical properties of the electrical composite grease under test decrease due to the heat generated during the breakdown discharge test.

[0078] For example, the evaluation criteria for the hardness and / or tensile strength of the electrical composite grease to be tested are: the change in hardness before and after discharge does not exceed 30%, and the change in tensile strength does not exceed 40%. After the discharge is stopped, the hardness and tensile strength recover to more than 80% of the initial value, and the corresponding recovery time is within 24 hours.

[0079] Specifically, the testing procedure for the hardness and / or tensile strength of the electrical composite grease to be tested is as follows:

[0080] (1) Prepare samples with uniform shape and size, and measure the initial value of hardness H0 and / or the initial value of tensile strength R0.

[0081] (2) Perform a breakdown discharge test on the electrical composite grease to be tested. Connect a high-voltage power supply and apply a certain electric field strength for 1-2 hours. During this period, measure the discharge value H1 of hardness and / or the discharge value R1 of tensile strength every 10-15 minutes until the discharge value H1 of hardness and / or the discharge value R1 of tensile strength tend to stabilize. Stop the power supply and check whether the change in hardness is ≤30% and the change in tensile strength is ≤40%.

[0082] (3) After 24 hours of power outage, measure the hardness recovery value H2 and / or the tensile strength recovery value R2, and calculate the degree of hardness recovery R. H = (H2-H1) / (H0-H1)×100% and / or the degree of recovery of tensile strength R R = (R2-R1) / (R0-R1)×100%, and check whether the degree of hardness recovery and / or tensile strength recovery is ≥80%.

[0083] (4) Record the recovery time t corresponding to the degree of hardness recovery. H and / or the recovery time t corresponding to the degree of recovery of tensile strength. R The recovery time t corresponds to a hardness recovery rate of over 80%. H Whether the recovery of tensile strength is above 80% within 24 hours, and / or the corresponding recovery time t R Is it within 24 hours?

[0084] Optionally, a lifespan test can also be performed on the electrical composite grease under test. For example, accelerated aging testing methods (e.g., high-temperature discharge testing) can be used. The time the electrical composite grease under test can operate under a specific electric field and temperature is determined. Electrical composite greases with self-healing properties have a longer lifespan because they can continuously repair damage incurred during operation.

[0085] For example, the evaluation criteria for the life test of the electrical composite grease to be tested are: the working time of the electrical composite grease to be tested is greater than or equal to 500 hours under a preset test voltage and a preset test temperature. And within 500 hours, the change in volume resistivity is ≤50%, the change in hardness is ≤50%, and the change in tensile strength is ≤50%.

[0086] This scheme specifies surface parameters as surface defects, electrical conductivity parameters as volume resistivity, crosslinking degree parameters as Joule heating value, and mechanical parameters as at least one of hardness and tensile strength. It provides a preferred embodiment for testing the self-healing performance of electrical composite grease, further improving the testing efficiency of electrical composite grease.

[0087] Example 2

[0088] Figure 2 This is a flowchart of a method for testing electrical composite grease according to Embodiment 2 of the present invention. Based on the above embodiments, this embodiment of the present invention specifies the step of "determining the self-healing performance test result of the electrical composite grease to be tested based on the initial value, discharge value, recovery value, and corresponding recovery time of the performance parameters" as follows: "Compare the initial value and discharge value of the performance parameters to obtain the test result of the degree of performance change of the electrical composite grease to be tested; test the test result of the degree of performance recovery of the electrical composite grease to be tested based on the initial value, recovery value, and corresponding recovery time of the performance parameters; when both the test result of the degree of performance change and the test result of the degree of performance recovery are passed, the self-healing performance test result of the electrical composite grease to be tested is determined to be passed." This method takes into account both the change and recovery of the electrical composite grease to be tested, thereby further improving the accuracy of the self-healing performance test result of the electrical composite grease to be tested. It should be noted that parts not described in detail in this embodiment of the present invention can be referred to in the descriptions of other embodiments.

[0089] See Figure 2 The method for detecting electrical compound grease shown includes:

[0090] S210. Obtain initial values ​​of the performance parameters of the electrical composite grease to be tested; wherein, the performance parameters include at least one of surface parameters, conductivity parameters, crosslinking degree parameters, and mechanical parameters.

[0091] S220. Perform a breakdown discharge test on the electrical composite grease to be tested, and collect the real-time values ​​of the performance parameters of the electrical composite grease to be tested during the breakdown discharge process, which are used as the discharge values ​​of the performance parameters.

[0092] S230. When the change in the discharge value of the performance parameter is less than or equal to the preset discharge value change threshold, stop the breakdown discharge test, and detect the real-time acquisition value of the performance parameter and the corresponding recovery time of the test power compound grease during the recovery process, as the recovery value and corresponding recovery time of the performance parameter.

[0093] S240. The initial values ​​of the performance parameters and the discharge values ​​are compared to obtain the test results of the degree of performance change of the electrical composite grease to be tested.

[0094] The test results of the degree of performance change of the tested electrical composite grease can be used to characterize the stability of its performance. The smaller the degree of performance change of the tested electrical composite grease, the higher its performance stability, and the less affected it is by electric field, thermal field, and oxidation reaction.

[0095] Specifically, the discharge values ​​of the performance parameters collected in real time can be compared with their initial values ​​to determine the difference between each discharge value and the initial value. The ratio of the maximum difference between the discharge value and the initial value to the initial value is determined as the degree of change of the performance parameter of the electrical composite grease under test. The degree of change of the performance parameter of the electrical composite grease under test can be compared with a preset performance change range. If the degree of change of the performance parameter is within the preset performance change range, the test result of the degree of change of the performance composite grease under test is passed; if the degree of change of the performance parameter is outside the preset performance change range, the test result of the degree of change of the performance composite grease under test is failed.

[0096] S250. Based on the initial value, recovery value, and corresponding recovery time of the performance parameters, the test results are used to determine the degree of performance recovery of the electrical composite grease to be tested.

[0097] Specifically, the recovered values ​​of the performance parameters collected in real time can be compared with their initial values ​​to determine the difference between each recovered value and the initial value. The ratio of the maximum difference between the recovered value and the initial value to the initial value is determined as the degree of recovery of the performance parameters of the electrical composite grease under test. The degree of recovery of the performance parameters of the electrical composite grease under test can be compared with a preset performance recovery range. If the degree of recovery of the performance parameters is not within the preset performance recovery range, the test result for the performance recovery degree of the electrical composite grease under test is considered a failure. If the degree of recovery of the performance parameters is within the preset performance recovery range, the corresponding recovery time is checked to see if it is within the preset recovery time range. If it is, the test result for the performance recovery degree of the electrical composite grease under test is considered a pass; otherwise, the test result for the performance recovery degree of the electrical composite grease under test is considered a failure.

[0098] S260. When both the test results for the degree of performance change and the test results for the degree of performance recovery are passed, the self-healing performance test result of the electrical composite grease to be tested is determined to be passed.

[0099] Specifically, if both the test results for the degree of performance change and the test results for the degree of performance recovery are passed, the self-healing performance test result of the electrical composite grease to be tested is determined to be passed; if either the test result for the degree of performance change or the test result for the degree of performance recovery is failed, the self-healing performance test result of the electrical composite grease to be tested is determined to be failed.

[0100] The technical solution of this invention compares the initial values ​​and discharge values ​​of the performance parameters to obtain the detection result of the performance change of the electrical composite grease to be tested. Based on the initial values, recovery values, and corresponding recovery times of the performance parameters, the detection result of the performance recovery of the electrical composite grease to be tested is detected. When both the detection result of the performance change and the detection result of the performance recovery are passed, the self-healing performance test result of the electrical composite grease to be tested is determined to be passed. By detecting both the performance change and the performance recovery of the performance parameters, the changes and recovery of the electrical composite grease to be tested are taken into account, thereby further improving the accuracy of the self-healing performance test result of the electrical composite grease to be tested.

[0101] In an optional embodiment of the present invention, the detection result of the performance recovery degree of the electrical composite grease to be tested is determined based on the initial value of the performance parameter, the recovery value, and the corresponding recovery time. This includes: comparing the initial value and the recovery value of the performance parameter to determine the performance recovery degree of the electrical composite grease to be tested; when the performance recovery degree is greater than or equal to a preset performance recovery degree threshold, comparing the recovery time with a preset recovery time; and when the recovery time is less than or equal to a preset recovery time threshold, determining that the detection result of the performance recovery degree of the electrical composite grease to be tested is passed.

[0102] Performance recovery degree can be used to characterize the degree of recovery of the electrical composite grease under test during the recovery process. Optionally, the performance recovery degree can be the ratio between the maximum difference between the recovered value and the initial value of the performance parameter and the initial value. The preset performance recovery degree threshold can be a pre-set minimum value for the performance recovery degree. Recovery time can also be used to characterize the recovery speed of the electrical composite grease under test during the recovery process. The preset recovery time threshold can be a pre-set maximum value for the recovery time. The preset recovery time threshold can be used to characterize the range of recovery times that pass the test. The preset performance recovery degree and preset recovery time threshold can be set and adjusted by technicians based on experience.

[0103] Specifically, the recovered values ​​of performance parameters can be compared with their initial values ​​to obtain the differences between each recovered value and the initial value. The ratio of the largest difference to the initial value is determined as the performance recovery degree of the electrical composite grease to be tested. The performance recovery degree of the electrical composite grease to be tested can be compared with a preset performance recovery degree threshold. If the performance recovery degree is greater than or equal to the preset performance recovery degree threshold, the corresponding recovery time is compared with a preset recovery time threshold. If the corresponding recovery time is less than or equal to the preset recovery time threshold, the test result for the performance recovery degree of the electrical composite grease to be tested is passed; otherwise, the test result for the self-healing performance of the electrical composite grease to be tested is failed.

[0104] This solution, by detecting the degree of performance recovery and the corresponding recovery time of the electrical composite grease under test, takes into account both the degree and speed of performance parameter recovery of the electrical composite grease under test, and further improves the efficiency and accuracy of determining the test results of the performance recovery degree of electrical composite grease.

[0105] In an optional embodiment of the present invention, comparing the initial value of the performance parameter and the discharge value to obtain the detection result of the performance change degree of the power compound grease to be tested includes: comparing the initial value of the performance parameter and the discharge value to obtain the performance change degree of the power compound grease to be tested; when the performance change degree is less than or equal to a preset performance change degree threshold, determining that the detection result of the performance change degree of the power compound grease to be tested is passed.

[0106] The preset performance variation threshold can be the maximum value of the pre-defined performance variation range. This threshold can be set and adjusted based on the experience of technical personnel. The preset performance variation rate threshold can be used to characterize the range of performance parameter variations. The degree of performance variation can be used to characterize the stability of the performance parameters of the electrical composite grease under test. The smaller the degree of performance variation, the higher the stability of the electrical composite grease under test, and the less affected it is by electric fields, thermal fields, and oxidation reactions.

[0107] Specifically, the discharge values ​​of the performance parameters can be compared with their initial values ​​to obtain the differences between each discharge value and the initial value. The ratio of the maximum difference to the initial value is determined as the degree of performance change of the electrical composite grease to be tested. The degree of performance change of the electrical composite grease to be tested can be compared with a preset performance change threshold. If the degree of performance change is less than or equal to the preset performance change threshold, the test result for the degree of performance change of the electrical composite grease to be tested is considered passed; if the degree of performance change is greater than the preset performance change threshold, the test result for the degree of performance change of the electrical composite grease to be tested is considered failed.

[0108] This solution further improves the efficiency and accuracy of determining the degree of performance change in electrical composite grease.

[0109] Example 3

[0110] Figure 3 This is a schematic diagram of a power compound grease detection device provided in Embodiment 3 of the present invention. This embodiment of the invention is applicable to the detection of power compound greases. The device can execute a power compound grease detection method and can be implemented in hardware and / or software. The device can be configured in an electronic device that performs power compound grease detection functions.

[0111] See Figure 3The electrical composite grease testing device shown includes: an initial performance parameter module 310, a discharge performance parameter detection module 320, a recovery performance parameter detection module 330, and a self-healing performance test result determination module 340. The initial performance parameter module 310 is used to acquire initial values ​​of the performance parameters of the electrical composite grease to be tested; wherein the performance parameters include at least one of surface parameters, conductivity parameters, crosslinking degree parameters, and mechanical parameters. The discharge performance parameter detection module 320 is used to perform a breakdown discharge test on the electrical composite grease to be tested and detect the real-time acquired values ​​of the performance parameters of the electrical composite grease to be tested during the breakdown discharge process, as the discharge values ​​of the performance parameters. The recovery performance parameter detection module 330 is used to stop the breakdown discharge test when the change in the discharge value of the performance parameter is less than or equal to a preset discharge value change threshold, and detect the real-time acquired values ​​of the performance parameters of the electrical composite grease to be tested and the corresponding recovery time during the recovery process, as the recovery values ​​of the performance parameters and the corresponding recovery time. The self-healing performance test result determination module 340 is used to determine the self-healing performance test result of the electrical composite grease to be tested based on the initial values ​​of the performance parameters, the discharge value, the recovery value, and the corresponding recovery time.

[0112] The technical solution of this invention obtains the initial values ​​of the performance parameters of the electrical composite grease to be tested, performs a breakdown discharge test on the electrical composite grease, and detects the real-time acquired values ​​of the performance parameters of the electrical composite grease during the breakdown discharge process as the discharge values ​​of the performance parameters. When the change in the discharge values ​​of the performance parameters is less than or equal to a preset threshold for the change in discharge values, the breakdown discharge test is stopped. The real-time acquired values ​​of the performance parameters and the corresponding recovery time of the electrical composite grease during the recovery process are then detected as the recovery values ​​of the performance parameters and the corresponding recovery time. Based on the initial values ​​of the performance parameters, the discharge values, the recovery values, and the corresponding recovery times, the self-healing performance test results of the electrical composite grease to be tested are determined. This supplements the detection of the self-healing performance of electrical composite greases, solves the problem that existing detection methods are not comprehensive in detecting electrical composite greases, and improves the comprehensiveness of electrical composite grease detection.

[0113] In an optional embodiment of the present invention, the self-healing performance test result determination module 340 includes: a change degree test result determination unit, used to compare the initial value of the performance parameter and the discharge value to obtain the test result of the performance change degree of the electrical composite grease to be tested; a recovery degree test result determination unit, used to detect the test result of the performance recovery degree of the electrical composite grease to be tested based on the initial value of the performance parameter, the recovery value and the corresponding recovery time; and a self-healing performance test result determination unit, used to determine that the self-healing performance test result of the electrical composite grease to be tested is passed when both the test result of the performance change degree and the test result of the performance recovery degree are passed.

[0114] In an optional embodiment of the present invention, the recovery degree detection result determination unit includes: a recovery degree determination subunit, used to compare the initial value and the recovery value of the performance parameter to determine the performance recovery degree of the electrical composite grease to be tested; a recovery time detection subunit, used to compare the recovery time and a preset recovery time when the performance recovery degree is less than or equal to a preset performance recovery degree threshold; and a recovery degree detection result determination subunit, used to determine that the detection result of the performance recovery degree of the electrical composite grease to be tested is passed when the recovery time is less than or equal to a preset recovery time threshold.

[0115] In an optional embodiment of the present invention, the change degree detection result determination unit includes: a change degree determination subunit, used to compare the initial value of the performance parameter and the discharge value to obtain the performance change degree of the power compound grease to be tested; and a change degree detection result determination subunit, used to determine that the detection result of the performance change degree of the power compound grease to be tested is passed when the performance change degree is less than or equal to a preset performance change degree threshold.

[0116] In an optional embodiment of the present invention, the discharge performance parameter detection module 320 includes: a first voltage value acquisition unit for acquiring a first voltage value; a first voltage application unit for applying a voltage to the electrical composite grease to be tested based on the first voltage value; the first voltage value being a gradually increasing high voltage value; a second voltage value calculation unit for detecting the corresponding first voltage value and calculating a second voltage value when the electrical composite grease to be tested is detected to be broken down; the second voltage value being less than the first voltage value; the second voltage value being a constant value; and a second voltage application unit for applying a voltage to the electrical composite grease to be tested based on the second voltage value.

[0117] In an optional embodiment of the present invention, after the self-healing performance test result determination module 340 determines the self-healing performance test result of the electrical composite grease to be tested, the device further includes: an electrical composite grease replacement module, used to replace the electrical composite grease in the field environment corresponding to the electrical composite grease to be tested when the self-healing performance test result is unsuccessful.

[0118] In an optional embodiment of the present invention, the surface parameters include surface defects; the electrical conductivity parameters include volume resistivity; the crosslinking degree parameters include Joule heating value; and the mechanical parameters include at least one of hardness and tensile strength.

[0119] The electrical compound grease detection device provided in this embodiment of the invention can execute the electrical compound grease detection method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0120] In the technical solutions of this invention, the acquisition of the initial values ​​of the performance parameters of the electrical composite grease to be tested, the real-time acquisition values ​​of the performance parameters of the electrical composite grease to be tested during the breakdown discharge process, the real-time acquisition values ​​of the performance parameters of the electrical composite grease to be tested during the recovery process, the corresponding recovery time, and the storage and application of the first voltage value all comply with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0121] Example 4

[0122] Figure 4 A schematic diagram of an electronic device 400 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0123] like Figure 4 As shown, the electronic device 400 includes at least one processor 401 and a memory, such as a read-only memory (ROM) 402 and a random access memory (RAM) 403, communicatively connected to the at least one processor 401. The memory stores computer programs executable by the at least one processor. The processor 401 can perform various appropriate actions and processes based on the computer program stored in the ROM 402 or loaded into the RAM 403 from storage unit 408. The RAM 403 may also store various programs and data required for the operation of the electronic device 400. The processor 401, ROM 402, and RAM 403 are interconnected via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0124] Multiple components in electronic device 400 are connected to I / O interface 405, including: input unit 406, such as keyboard, mouse, etc.; output unit 407, such as various types of displays, speakers, etc.; storage unit 408, such as disk, optical disk, etc.; and communication unit 409, such as network card, modem, wireless transceiver, etc. Communication unit 409 allows electronic device 400 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0125] Processor 401 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 401 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 401 performs the various methods and processes described above, such as the electrical compound grease detection method.

[0126] In some embodiments, the electrical grease detection method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 408. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 400 via ROM 402 and / or communication unit 409. When the computer program is loaded into RAM 403 and executed by processor 401, one or more steps of the electrical grease detection method described above may be performed. Alternatively, in other embodiments, processor 401 may be configured to perform the electrical grease detection method by any other suitable means (e.g., by means of firmware).

[0127] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0128] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0129] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0130] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0131] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0132] A computing system can include clients and servers. Clients and servers are generally geographically separated and typically interact via communication networks. The client-server relationship is established by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system. It addresses the shortcomings of traditional physical hosts and VPS (Virtual Private Server) services, such as high management difficulty and weak business scalability.

[0133] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0134] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for detecting electrical power composite grease, characterized by, include: Initial values ​​of the performance parameters of the electrical composite grease to be tested are obtained; wherein, the performance parameters include at least one of surface parameters, conductivity parameters, crosslinking degree parameters, and mechanical parameters; The electrical composite grease to be tested is subjected to a breakdown discharge test, and the real-time acquired values ​​of the performance parameters of the electrical composite grease to be tested during the breakdown discharge process are detected as the discharge values ​​of the performance parameters. When the change in the discharge value of the performance parameter is less than or equal to the preset discharge value change threshold, the breakdown discharge test is stopped, and the real-time acquisition value of the performance parameter and the corresponding recovery time of the test power composite grease during the recovery process are detected as the recovery value and the corresponding recovery time of the performance parameter. The self-healing performance test result of the electrical composite grease to be tested is determined based on the initial value of the performance parameter, the discharge value, the recovery value and the corresponding recovery time. The step of determining the self-healing performance test result of the electrical composite grease under test based on the initial value of the performance parameter, the discharge value, the recovery value, and the corresponding recovery time includes: The initial values ​​of the performance parameters and the discharge values ​​are compared to obtain the detection results of the degree of performance change of the electrical composite grease to be tested; The test results of the performance recovery degree of the electrical composite grease under test are determined based on the initial value of the performance parameter, the recovery value, and the corresponding recovery time. When both the test results for the degree of performance change and the test results for the degree of performance recovery are passed, the self-healing performance test result of the electrical composite grease to be tested is determined to be passed.

2. The method of claim 1, wherein, The detection result of detecting the performance recovery degree of the electrical composite grease under test based on the initial value of the performance parameter, the recovery value, and the corresponding recovery time includes: The initial value and the recovered value of the performance parameter are compared to determine the degree of performance recovery of the electrical composite grease to be tested. When the performance recovery level is greater than or equal to a preset performance recovery level threshold, the recovery time is compared with a preset recovery time; When the recovery time is less than or equal to a preset recovery time threshold, the test result of the performance recovery degree of the electrical composite grease to be tested is determined to be passed.

3. The method of claim 1, wherein, The comparison of the initial value of the performance parameter and the discharge value to obtain the detection result of the degree of performance change of the electrical composite grease to be tested includes: The initial values ​​of the performance parameters and the discharge values ​​are compared to obtain the degree of performance change of the electrical composite grease to be tested; When the degree of performance change is less than or equal to a preset performance change threshold, the detection result of the performance change degree of the electrical composite grease to be tested is determined to be passed.

4. The method according to claim 1, characterized in that, The breakdown discharge test on the electrical composite grease to be tested includes: Obtain the first voltage value; A voltage is applied to the electrical composite grease to be tested based on the first voltage value; the first voltage value is a gradually increasing high voltage value. When the electrical composite grease to be tested is detected to be broken down, the corresponding first voltage value is detected and a second voltage value is calculated; the second voltage value is less than the first voltage value; the second voltage value is a constant value. A voltage is applied to the electrical composite grease to be tested based on the second voltage value.

5. The method according to claim 1, characterized in that, After determining the self-healing performance test results of the electrical composite grease to be tested, the method further includes: If the self-healing performance test result is unsuccessful, replace the electrical composite grease in the field environment corresponding to the electrical composite grease to be tested.

6. The method according to claim 1, characterized in that, The surface parameters include surface defects; the electrical conductivity parameters include volume resistivity; the crosslinking degree parameters include Joule heating value; and the mechanical parameters include at least one of hardness and tensile strength.

7. A device for detecting electrical compound grease, controlled by the electrical compound grease detection method as described in any one of claims 1-6, characterized in that, include: An initial performance parameter module is used to obtain initial values ​​of the performance parameters of the electrical composite grease to be tested; wherein, the performance parameters include at least one of surface parameters, conductivity parameters, crosslinking degree parameters, and mechanical parameters; The discharge performance parameter detection module is used to perform a breakdown discharge test on the electrical composite grease to be tested, and to detect the real-time acquisition value of the performance parameters of the electrical composite grease to be tested during the breakdown discharge process, which is used as the discharge value of the performance parameters. The recovery performance parameter detection module is used to stop the breakdown discharge test when the change in the discharge value of the performance parameter is less than or equal to a preset discharge value change threshold, and to detect the real-time acquisition value of the performance parameter and the corresponding recovery time of the test power composite grease during the recovery process, as the recovery value and the corresponding recovery time of the performance parameter. The self-healing performance test result determination module is used to determine the self-healing performance test result of the electrical composite grease to be tested based on the initial value of the performance parameter, the discharge value, the recovery value and the corresponding recovery time.

8. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the electrical compound grease detection method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the electrical composite grease detection method according to any one of claims 1-6.

Images