Cable aging evaluation system and method based on environment and operation parameters

Abstract

The embodiment of the invention discloses a cable aging assessment system and method based on environment and operation parameters, and the method comprises the steps: obtaining the current laying time and service life of a to-be-assessed cable, and determining a first aging parameter assessment value of the to-be-assessed cable according to the laying time and service life, acquiring operation parameter data and layout environment parameter data of the to-be-evaluated cable in the layout duration, determining a first aging parameter adjustment value of the first aging parameter evaluation value according to the operation parameter data, and determining a second aging parameter adjustment value of the first aging parameter evaluation value according to the layout environment parameter data and the layout duration, and adjusting the first aging parameter evaluation value based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the to-be-evaluated cable. According to the scheme, aging evaluation is carried out through the environment and operation parameters of the cable, and cable aging evaluation data can be obtained more accurately and reasonably for subsequent maintenance processing.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of cable aging assessment, and more particularly to a cable aging assessment system and method based on environment and operating parameters. Background Art

[0002] As the main carrier of power transmission, the quality of cables is directly related to the reliability of power supply. During the use of cables, due to the simultaneous effects of high field strength and thermal cycles, the insulation gradually ages, resulting in reduced mechanical properties, physical properties and breakdown field strength, thereby reducing the service life of the cables. Cable aging not only affects the normal operation of the power system, but may also pose a threat to the safety of life and property of personnel. Therefore, regular aging detection of power supply cables and timely detection and handling of potential problems are of great significance to ensure the safe and stable operation of the power system, reduce economic losses, and maintain social stability.

[0003] Among the existing cable aging assessment methods, most provide assessment information on the degree of aging based on the cable's installation years. The reference factors of this cable aging assessment method are too single, and no reasonable consideration is given to the different actual usage conditions of the cable, resulting in low accuracy of the cable aging assessment information. Summary of the invention

[0004] The embodiments of the present invention provide a cable aging assessment system and method based on environmental and operating parameters, which solves the problem that the reference factors in the existing cable aging assessment technology are too single and the different actual usage conditions of the cables are not reasonably considered, resulting in low accuracy of the cable aging assessment information. The cable aging assessment data can be obtained more accurately and reasonably for subsequent maintenance processing.

[0005] In a first aspect, an embodiment of the present invention provides a cable aging assessment method based on environment and operating parameters, comprising:

[0006] Obtaining the current installation time and service life of the cable to be evaluated, and determining a first aging parameter evaluation value of the cable to be evaluated according to the installation time and service life;

[0007] Acquire operation parameter data and installation environment parameter data of the cable to be evaluated during the installation duration, determine a first aging parameter adjustment value of the first aging parameter evaluation value according to the operation parameter data, and determine a second aging parameter adjustment value of the first aging parameter evaluation value according to the installation environment parameter data and the installation duration;

[0008] The first aging parameter evaluation value is adjusted based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated.

[0009] Optionally, determining the first aging parameter evaluation value of the cable to be evaluated according to the installation time and the service life includes:

[0010] The installation time is divided by the service life to obtain the aging parameter evaluation value to be adjusted, and the first aging parameter evaluation value of the cable to be evaluated is determined based on the preset aging increase value corresponding to the unit installation time and the aging parameter evaluation value to be adjusted.

[0011] Optionally, the determining the first aging parameter evaluation value of the cable to be evaluated based on the preset aging increase value corresponding to the unit laying time and the aging parameter evaluation value to be adjusted includes:

[0012] The total aging increase value is obtained by dividing the laying time by the unit laying time and multiplying the result by the preset aging increase value, and the aging parameter evaluation value to be adjusted and the total aging increase value are superimposed to obtain the first aging parameter evaluation value of the cable to be evaluated.

[0013] Optionally, the operating parameter data includes a plurality of voltage parameter values ​​and a plurality of current parameter values, and the determining the first aging parameter adjustment value of the first aging parameter evaluation value according to the operating parameter data includes:

[0014] Determine the voltage fluctuation amplitude of the cable to be evaluated according to the multiple voltage parameter values ​​within the installation time, and calculate the current average value of the multiple current parameter values ​​within the installation time;

[0015] A first aging parameter adjustment value of the first aging parameter evaluation value is determined based on the voltage fluctuation amplitude and the current average value.

[0016] Optionally, the determining the first aging parameter adjustment value of the first aging parameter evaluation value based on the voltage fluctuation amplitude and the current average value includes:

[0017] When the voltage fluctuation amplitude is greater than the preset fluctuation amplitude, the voltage influence adjustment value is determined according to the difference between the voltage fluctuation amplitude and the preset fluctuation amplitude; when the current average value is greater than the preset current value, the current influence adjustment value is determined according to the difference between the current average value and the preset current value;

[0018] A sum of the voltage impact adjustment value and the current impact adjustment value is determined as a first aging parameter adjustment value of the first aging parameter evaluation value.

[0019] Optionally, the determining the second aging parameter adjustment value of the first aging parameter evaluation value according to the deployment environment parameter data and the deployment duration includes:

[0020] Determine the environmental aging impact level of the cable to be evaluated according to the installation environment parameter data, determine a preset adjustment value mapping table corresponding to the environmental aging impact level, and query the preset adjustment value mapping table according to the installation duration to obtain a second aging parameter adjustment value of the first aging parameter evaluation value.

[0021] Optionally, the installation environment parameter data includes a plurality of installation environment factors and corresponding installation environment factor values, and determining the environmental aging impact level of the cable to be evaluated according to the installation environment parameter data includes:

[0022] Determine respectively the preset numerical value intervals of the corresponding deployment environment factors into which the values ​​of the deployment environment factors fall, and form the preset numerical value intervals of the corresponding deployment environment factors into interval combinations;

[0023] The environmental aging impact level of the cable to be evaluated is obtained by searching a comparison table of different preset interval combinations and corresponding environmental aging impact levels according to the interval combination.

[0024] In a second aspect, an embodiment of the present invention further provides a cable aging assessment system based on environment and operating parameters, including:

[0025] An acquisition module is used to obtain the current laying time and service life of the cable to be evaluated;

[0026] An evaluation value determination module, used to determine a first aging parameter evaluation value of the cable to be evaluated according to the installation time and the service life;

[0027] The acquisition module is further used to acquire the operating parameter data and the laying environment parameter data of the cable to be evaluated during the laying time;

[0028] an adjustment value determination module, configured to determine a first aging parameter adjustment value of the first aging parameter evaluation value according to the operation parameter data, and to determine a second aging parameter adjustment value of the first aging parameter evaluation value according to the deployment environment parameter data and the deployment duration;

[0029] An evaluation value adjustment module is used to adjust the first aging parameter evaluation value based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated.

[0030] In a third aspect, an embodiment of the present invention further provides a cable aging assessment device based on environment and operating parameters, the device comprising:

[0031] one or more processors;

[0032] a storage device for storing one or more programs,

[0033] When the one or more programs are executed by the one or more processors, the one or more processors implement the cable aging assessment method based on environment and operating parameters described in the embodiment of the present invention.

[0034] In a fourth aspect, an embodiment of the present invention further provides a storage medium storing computer executable instructions, which, when executed by a computer processor, are used to execute the cable aging assessment method based on environmental and operating parameters described in an embodiment of the present invention.

[0035] In an embodiment of the present invention, the current installation time and service life of the cable to be evaluated are obtained, and a first aging parameter evaluation value of the cable to be evaluated is determined based on the current installation time and service life of the cable to be evaluated, and the operating parameter data and installation environment parameter data of the cable to be evaluated during the installation time are obtained, and a first aging parameter adjustment value of the first aging parameter evaluation value is determined based on the operating parameter data, and a second aging parameter adjustment value of the first aging parameter evaluation value is determined based on the installation environment parameter data and the installation time, and the first aging parameter evaluation value is adjusted based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated. This solution performs aging evaluation through the environment and operating parameters of the cable, solves the problem that the reference factors in the existing cable aging evaluation technology are too single, and the different actual usage conditions of the cable are not reasonably considered, resulting in low accuracy of the cable aging evaluation information, and can more accurately and reasonably obtain cable aging evaluation data for subsequent maintenance processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A flow chart of a cable aging assessment method based on environment and operating parameters provided by an embodiment of the present invention;

[0037] Figure 2 A flowchart of another cable aging assessment method based on environment and operating parameters provided by an embodiment of the present invention;

[0038] Figure 3 A flowchart of another cable aging assessment method based on environment and operating parameters provided by an embodiment of the present invention;

[0039] Figure 4 A flowchart of another cable aging assessment method based on environment and operating parameters provided by an embodiment of the present invention;

[0040] Figure 5 A module structure block diagram of a cable aging assessment system based on environment and operating parameters provided by an embodiment of the present invention;

[0041] Figure 6A schematic structural diagram of a cable aging assessment device based on environment and operating parameters provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the embodiments of the present invention, rather than to limit the embodiments of the present invention. It is also necessary to explain that, for ease of description, only parts related to the embodiments of the present invention are shown in the accompanying drawings, rather than all structures.

[0043] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and or or" in the specification and claims represents at least one of the connected objects, and the character "or" generally indicates that the objects associated before and after are in an "or" relationship.

[0044] The cable aging assessment method based on environment and operating parameters provided in the embodiment of the present application can be applied to the scene of detecting cable aging. The cable aging assessment method based on environment and operating parameters provided in the embodiment of the present application, the execution subject of each step can be a computer device, which refers to any electronic device with data calculation, processing and storage capabilities, such as mobile phones, PCs (Personal Computers), tablet computers and other terminal devices, and can also be servers and other devices, which are not limited in the embodiment of the present application.

[0045] Figure 1 A flow chart of a cable aging assessment method based on environment and operating parameters provided by an embodiment of the present invention, such as Figure 1 As shown, specifically including:

[0046] Step S101: obtaining the current installation time and service life of the cable to be evaluated, and determining a first aging parameter evaluation value of the cable to be evaluated according to the installation time and service life.

[0047] The cable to be evaluated is used to characterize the cable line waiting for cable aging evaluation. The laying time can be the length of time from the laying of the cable to be evaluated to the laying area to the current time. The service life is used to characterize the longest time that the cable to be evaluated has been put into use. The first aging parameter evaluation value is used to characterize the evaluation value of the aging degree of the cable to be evaluated obtained by the laying time and the service life. In one embodiment, the current laying time and service life of the cable to be evaluated are obtained, and the preset aging parameter evaluation value mapping table associated with the service life is determined. The first aging parameter evaluation value of the cable to be evaluated is obtained by querying the preset aging parameter evaluation value mapping table according to the laying time. Optionally, a method for determining the first aging parameter evaluation value can be to divide the current laying time of the cable to be evaluated by the service life to obtain the aging parameter evaluation value to be adjusted, and determine the first aging parameter evaluation value of the cable to be evaluated based on the preset aging increase value corresponding to the unit laying time and the aging parameter evaluation value to be adjusted. The cable will not only age with the use time, but also have corresponding aging during operation. The first aging parameter evaluation value is determined by the cable laying time and the additional aging value of the laying time, so that the first aging parameter evaluation value obtained can be more reasonable and accurate.

[0048] Step S102: acquiring operating parameter data and installation environment parameter data of the cable to be evaluated during the installation time, and determining a first aging parameter adjustment value of the first aging parameter evaluation value according to the operating parameter data.

[0049] Among them, the operating parameter data can be data of relevant parameters when the cable to be evaluated is in operation, such as operating parameter data such as voltage data and current data. The laying environment parameter data can be various environmental parameter data around the cable to be evaluated when laying, such as temperature data, humidity data and other environmental parameter data. The first aging parameter adjustment value is used to characterize the value used to adjust the first aging parameter evaluation value. After determining the first aging parameter evaluation value of the cable to be evaluated, the recorded operating parameter data and laying environment parameter data of the cable to be evaluated during the laying time are obtained, and the first aging parameter adjustment value used to adjust the first aging parameter evaluation value is determined by the operating parameter data of the cable to be evaluated during the laying time. In one embodiment, the voltage average value and current average value of the cable to be evaluated during the laying time are calculated according to multiple voltage values ​​and multiple current values ​​in the operating parameter data, and the voltage average value and current average value are substituted into the preset adjustment value calculation formula to obtain the first aging parameter adjustment value. Optionally, the operating parameter data includes multiple voltage parameter values ​​and multiple current parameter values. A method for determining the first aging parameter adjustment value may be to determine the voltage fluctuation amplitude of the cable to be evaluated based on multiple voltage parameter values ​​within the laying time of the cable to be evaluated, and calculate the current average value of multiple current parameter values ​​within the laying time of the cable to be evaluated, and determine the first aging parameter adjustment value of the first aging parameter evaluation value based on the voltage fluctuation amplitude and current average value of the cable to be evaluated. Excessive voltage fluctuation amplitude and current overload will cause cable aging. Determining the adjustment value of the first aging parameter evaluation value by the voltage fluctuation amplitude and current value of the cable within the laying time can make the final cable aging evaluation value more accurate and reasonable.

[0050] Step S103: determining a second aging parameter adjustment value of the first aging parameter evaluation value according to the installation environment parameter data and the installation duration, and adjusting the first aging parameter evaluation value based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated.

[0051] Among them, the first aging parameter adjustment value is used to characterize another value used to adjust the first aging parameter evaluation value. The final aging parameter evaluation value is used to characterize the evaluation value of the aging degree of the cable to be evaluated that is finally determined. Another second aging parameter adjustment value for adjusting the first aging parameter evaluation value is determined by the laying environment parameter data of the cable to be evaluated, and the first aging parameter adjustment value and the second aging parameter adjustment value are superimposed with the first aging parameter evaluation value to obtain the final aging parameter evaluation value of the cable to be evaluated. An exemplary example may be that it is determined that the first aging parameter evaluation value of the cable to be evaluated is 40%, the first aging parameter adjustment value is 5%, and the second aging parameter adjustment value is 10%, then the first aging parameter adjustment value and the second aging parameter adjustment value are superimposed with the first aging parameter evaluation value to obtain a final aging parameter evaluation value of the cable to be evaluated of 55%.

[0052] In one embodiment, a method for determining a second aging parameter adjustment value may be to input various types of environmental parameter values ​​and laying duration in the laying environment parameter data into a second preset adjustment value calculation formula to obtain a second aging parameter adjustment value of the first aging parameter evaluation value. Optionally, the environmental aging impact level of the cable to be evaluated is determined based on the laying environment parameter data of the cable to be evaluated, a preset adjustment value mapping table corresponding to the environmental aging impact level is determined, and the preset adjustment value mapping table is queried based on the laying duration of the cable to be evaluated to obtain the second aging parameter adjustment value of the first aging parameter evaluation value. The environment surrounding the cable will also have an impact on the aging of the cable. By determining another adjustment value of the first aging parameter evaluation value through the environmental data of the cable laying location, the reference dimension of the cable aging evaluation is increased, and the accuracy and rationality of the cable aging evaluation are improved.

[0053] From the above, it can be known that the current laying time and service life of the cable to be evaluated are obtained, and the first aging parameter evaluation value of the cable to be evaluated is determined according to the current laying time and service life of the cable to be evaluated, and the operating parameter data and laying environment parameter data of the cable to be evaluated during the laying time are obtained, and the first aging parameter adjustment value of the first aging parameter evaluation value is determined according to the operating parameter data, and the second aging parameter adjustment value of the first aging parameter evaluation value is determined according to the laying environment parameter data and the laying time, and the first aging parameter evaluation value is adjusted based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain the final aging parameter evaluation value of the cable to be evaluated. This solution performs aging evaluation through the environment and operating parameters of the cable, which solves the problem that the reference factors in the existing cable aging evaluation technology are too single, and the different actual usage conditions of the cable are not reasonably considered, resulting in low accuracy of the cable aging evaluation information, and can more accurately and reasonably obtain cable aging evaluation data for subsequent maintenance processing.

[0054] Figure 2A flowchart of another cable aging evaluation method based on environment and operating parameters provided by an embodiment of the present invention provides an optional specific method for determining a first aging parameter evaluation value, such as Figure 2 As shown, specifically including:

[0055] Step S201, obtaining the current laying time and service life of the cable to be evaluated, dividing the laying time by the service life to obtain the aging parameter evaluation value to be adjusted, and determining the first aging parameter evaluation value of the cable to be evaluated based on the preset aging increase value corresponding to the unit laying time and the aging parameter evaluation value to be adjusted.

[0056] Among them, the unit laying time can be a laying time length set for reference, which is used to measure the laying time of the cable, and can be a time length of 1 minute, 10 minutes, 1 hour, etc. The preset aging increase value is used to characterize the increased cable aging value under the preset unit laying time, and can be reasonably set according to the specifications of the cable. Optionally, a method for determining the first aging parameter evaluation value can be: divide the laying time of the cable to be evaluated by the unit laying time and multiply it by the preset aging increase value to obtain the total aging increase value, and superimpose the aging parameter evaluation value to be adjusted with the total aging increase value to obtain the first aging parameter evaluation value of the cable to be evaluated. An exemplary example may be that the laying time of the cable a to be evaluated is 2 years, the service life is 20 years, the unit laying time is half a year, and the corresponding preset aging increase value is 1%. The laying time of the cable a to be evaluated is divided by the service life to obtain the aging parameter evaluation value to be adjusted of 10%. The laying time of the cable a to be evaluated is divided by the unit laying time and multiplied by the preset aging increase value to obtain a total aging increase value of 4%. The aging parameter evaluation value to be adjusted is superimposed with the total aging increase value to obtain a first aging parameter evaluation value of the cable a to be evaluated of 14%. In another embodiment, the laying time of the cable to be evaluated, the unit laying time, the preset aging increase value and the aging parameter evaluation value to be adjusted are substituted into the preset calculation formula to obtain the first aging parameter evaluation value of the cable to be evaluated.

[0057] Step S202: acquiring operating parameter data and installation environment parameter data of the cable to be evaluated during the installation time, and determining a first aging parameter adjustment value of the first aging parameter evaluation value according to the operating parameter data.

[0058] Step S203: determining a second aging parameter adjustment value of the first aging parameter evaluation value according to the installation environment parameter data and the installation duration, and adjusting the first aging parameter evaluation value based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated.

[0059] From the above, it can be seen that the current laying time and service life of the cable to be evaluated are obtained, and the current laying time of the cable to be evaluated is divided by the service life to obtain the aging parameter evaluation value to be adjusted, and the first aging parameter evaluation value of the cable to be evaluated is determined based on the preset aging increase value corresponding to the unit laying time and the aging parameter evaluation value to be adjusted. This solution determines the first aging parameter evaluation value by the laying time of the cable and the additional aging value of the laying time, which can make the obtained first aging parameter evaluation value more reasonable and accurate.

[0060] Figure 3 A flowchart of another cable aging assessment method based on environment and operating parameters provided by an embodiment of the present invention provides an optional specific method for determining the first aging parameter adjustment value, such as Figure 3 As shown, specifically including:

[0061] Step S301: obtaining the current installation time and service life of the cable to be evaluated, and determining a first aging parameter evaluation value of the cable to be evaluated according to the installation time and service life.

[0062] Step S302, obtaining the operating parameter data and the installation environment parameter data of the cable to be evaluated during the installation time, determining the voltage fluctuation amplitude of the cable to be evaluated according to multiple voltage parameter values ​​during the installation time, and calculating the current average value of multiple current parameter values ​​during the installation time.

[0063] The operating parameter data includes multiple voltage parameter values ​​and multiple current parameter values, and the voltage fluctuation amplitude refers to the size of the actual voltage offset value. Exemplarily, a processing method of the operating parameter data may be to determine the voltage fluctuation amplitude of the cable to be evaluated based on multiple voltage parameter values ​​within the laying time of the cable to be evaluated, and calculate the current average value of multiple current parameter values ​​within the laying time of the cable to be evaluated. An exemplary example may be that the laying time of the cable a to be evaluated is 2 years, and the voltage parameter values ​​of the cable a to be evaluated within 2 years are 220V, 230V, 260V, 200V, 240V, 320V, 220V, 220V, 260V, 240V, 320V, 260V, and the current parameter values ​​are 30A, 20A, 25A, 15A, 18A, 35A, 28A, 25A, 20A, 25A, 15A, 20A. Substituting each voltage parameter value into the voltage fluctuation amplitude calculation formula, the voltage fluctuation amplitude of the cable a to be evaluated is 54%, and the current average value of multiple current parameter values ​​is calculated to be 23A.

[0064] Step S303: determining a first aging parameter adjustment value of the first aging parameter evaluation value based on the voltage fluctuation amplitude and the current average value.

[0065] Among them, after calculating the voltage fluctuation amplitude and the current average value of the cable to be evaluated, the first aging parameter adjustment value of the first aging parameter evaluation value is determined based on the voltage fluctuation amplitude and the current average value of the cable to be evaluated. Optionally, a method for determining the first aging parameter adjustment value may be that when the voltage fluctuation amplitude is greater than the preset fluctuation amplitude, the voltage influence adjustment value is determined according to the difference between the voltage fluctuation amplitude and the preset fluctuation amplitude, and when the current average value is greater than the preset current value, the current influence adjustment value is determined according to the difference between the current average value and the preset current value, and the sum of the voltage influence adjustment value and the current influence adjustment value is determined as the first aging parameter adjustment value of the first aging parameter evaluation value. An exemplary example may be that the preset fluctuation amplitude is 30%, the preset current value is 20A, the voltage fluctuation amplitude of the cable a to be evaluated is 54%, the current average value is 23%, the voltage fluctuation amplitude of the cable a to be evaluated is greater than the preset fluctuation amplitude and the current average value is greater than the preset current value, the difference between the voltage fluctuation amplitude and the preset fluctuation amplitude is 24%, the difference between the current average value and the preset current value is 3A, the preset voltage difference intervals are voltage difference interval 1 (0, 10%], voltage difference interval 2 (10, 20%], voltage difference interval 3 (20, 30%], voltage difference interval 4 (30, 40%], and the corresponding preset voltage impact adjustment values ​​are 5%, 10%, 15%, and 20% respectively, and the preset current difference intervals are current difference interval 1 (0, 5A], current difference interval 2 (5A, 10A], current difference interval 3 (20, 30%], and voltage difference interval 4 (30, 40%]). The value interval 3 (10A, 15A], the current difference interval 4 (15A, 20A], the corresponding preset current influence adjustment values ​​are 3%, 6%, 9%, and 12% respectively, the interval in which the difference between the voltage fluctuation amplitude of the cable a to be evaluated and the preset fluctuation amplitude falls is the voltage difference interval 3, and the interval in which the difference between the current average value and the preset current value falls is the current difference interval 1, then the voltage influence adjustment value is 15%, the current influence adjustment value is 3%, and the first aging parameter adjustment value is 18%. In another embodiment, the corresponding preset voltage influence adjustment value mapping table and the preset current influence adjustment value mapping table are queried according to the voltage fluctuation amplitude and the current average value to obtain the voltage influence adjustment value and the current influence adjustment value, and the sum of the voltage influence adjustment value and the current influence adjustment value is determined as the first aging parameter adjustment value of the first aging parameter evaluation value.

[0066] Step S304: determine a second aging parameter adjustment value of the first aging parameter evaluation value according to the installation environment parameter data and the installation duration, and adjust the first aging parameter evaluation value based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated.

[0067] As can be seen from the above, after obtaining the operating parameter data and the laying environment parameter data of the cable to be evaluated during the laying time, the voltage fluctuation amplitude of the cable to be evaluated is determined according to the multiple voltage parameter values ​​during the laying time of the cable to be evaluated, and the current average value of the multiple current parameter values ​​during the laying time of the cable to be evaluated is calculated, and the first aging parameter adjustment value of the first aging parameter evaluation value is determined based on the voltage fluctuation amplitude and the current average value of the cable to be evaluated. This solution determines the adjustment value of the first aging parameter evaluation value by the voltage fluctuation amplitude and the current value of the cable during the laying time, which can make the final cable aging evaluation value more accurate and reasonable.

[0068] Figure 4 A flowchart of another cable aging assessment method based on environment and operating parameters provided by an embodiment of the present invention provides an optional specific method for determining the second aging parameter adjustment value, such as Figure 4 As shown, specifically including:

[0069] Step S401: obtaining the current installation time and service life of the cable to be evaluated, and determining a first aging parameter evaluation value of the cable to be evaluated according to the installation time and service life.

[0070] Step S402: acquiring operating parameter data and installation environment parameter data of the cable to be evaluated during the installation time, and determining a first aging parameter adjustment value of the first aging parameter evaluation value according to the operating parameter data.

[0071] Step S403: determine the environmental aging impact level of the cable to be evaluated according to the installation environment parameter data, determine a preset adjustment value mapping table corresponding to the environmental aging impact level, and query the preset adjustment value mapping table according to the installation duration to obtain a second aging parameter adjustment value of the first aging parameter evaluation value.

[0072] Among them, the environmental aging impact level can be the level of impact of the laying environment parameter data of the cable to be evaluated on the cable aging. The preset adjustment value mapping table is used to characterize the mapping relationship between different environmental aging impact levels and different second aging parameter adjustment values. The environmental aging impact level of the cable to be evaluated is determined according to the laying environment parameter data, and the preset adjustment value mapping table corresponding to the environmental aging impact level is determined. The preset adjustment value mapping table is queried according to the laying time of the cable to be evaluated to obtain the second aging parameter adjustment value of the first aging parameter evaluation value. An exemplary example may be that the environmental aging impact level of the cable a to be evaluated is determined to be level two, and the preset adjustment value mapping table corresponding to level two is shown in the following table:

[0073] Installation time Second aging parameter adjustment value 1 year 2％ 2 years 4％ 3 years 6％ 4 years 8％

[0074] The above-mentioned preset adjustment value mapping table describes the mapping relationship between different installation time and the second aging parameter adjustment value when the environmental aging level is level 2. The specific description is as follows: when the installation time is 1 year, the corresponding second aging parameter adjustment value is 2%; when the installation time is 2 years, the corresponding second aging parameter adjustment value is 4%; when the installation time is 3 years, the corresponding second aging parameter adjustment value is 6%; when the installation time is 4 years, the corresponding second aging parameter adjustment value is 8%.

[0075] The installation time of the cable a to be evaluated is 2 years. The preset adjustment value mapping table is queried to obtain a second aging parameter adjustment value of 4% for the first aging parameter evaluation value of the cable a to be evaluated.

[0076] Optionally, the installation environment parameter data includes multiple installation environment factors and corresponding installation environment factor values. One method for determining the environmental aging impact level may be to separately determine the preset numerical intervals of the corresponding installation environment factors into which each installation environment factor value falls, and combine the preset numerical intervals of the corresponding installation environment factors into interval combinations, and query the comparison table of different preset interval combinations and corresponding environmental aging impact levels according to the interval combination to obtain the environmental aging impact level of the cable to be evaluated. An exemplary example may be that the temperature value of the layout area of ​​the cable a to be evaluated is 28°C, the humidity is 40%, the preset temperature value interval is temperature value interval 1 (0°C, 20°C], temperature value interval 2 (20°C, 40°C], temperature value interval 3 (40°C, 60°C], the preset humidity value interval is humidity value interval 1 (0, 30%], humidity value interval 2 (30%, 60%], humidity value interval 3 (60%, 100%], the interval in which the temperature value falls is temperature value interval 2 (20°C, 40°C], the interval in which the humidity value falls is humidity value interval 2 (30%, 60%], the interval combination is (20°C, 40°C], (30%, 60%], and the comparison table of different preset interval combinations and corresponding environmental aging impact levels is shown in the following table:

[0077] Interval combination Environmental aging impact level (0℃，20℃]、(0，30％] Level 1 (0℃，20℃]、(30％，60％] Level 2 (0℃，20℃]、(60％，100％] Level 3 (20℃，40℃]、(0，30％] Level 2 (20℃，40℃]、(30％，60％] Level 3 (20℃，40℃]、(60％，100％] Level 4 (40℃，60℃]、(0，30％] Level 3 (40℃，60℃]、(30％，60％] Level 4 (40℃，60℃]、(60％，100％] Level 5

[0078] According to the current interval combination of (20°C, 40°C], (30%, 60%], the above reference table is queried to obtain the environmental aging impact level of the cable to be evaluated as level three. In another embodiment, the installation environment factor values ​​corresponding to multiple installation environment factors of the cable to be evaluated are input into the trained environmental aging impact level output model, and the second aging parameter adjustment value of the first aging parameter evaluation value of the cable to be evaluated is output.

[0079] Step S404: adjusting the first aging parameter evaluation value based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated.

[0080] As can be seen from the above, the environmental aging impact level of the cable to be evaluated is determined according to the laying environment parameter data of the cable to be evaluated, the preset adjustment value mapping table corresponding to the environmental aging impact level is determined, and the preset adjustment value mapping table is queried according to the laying time of the cable to be evaluated to obtain the second aging parameter adjustment value of the first aging parameter evaluation value. This solution determines another adjustment value of the first aging parameter evaluation value through the environmental data of the cable laying location, increases the reference dimension of the cable aging evaluation, and improves the accuracy and rationality of the cable aging evaluation.

[0081] Figure 5 The module structure block diagram of a cable aging assessment system based on environment and operating parameters provided by an embodiment of the present invention is used to execute the cable aging assessment method based on environment and operating parameters provided by the above embodiment, and has the corresponding functional modules and beneficial effects of the execution method. Figure 5 As shown, the system specifically includes:

[0082] An acquisition module 101 is used to acquire the current laying time and service life of the cable to be evaluated;

[0083] An evaluation value determination module 102, configured to determine a first aging parameter evaluation value of the cable to be evaluated according to the installation time and the service life;

[0084] The acquisition module 101 is further used to acquire the operation parameter data and the installation environment parameter data of the cable to be evaluated during the installation time;

[0085] An adjustment value determination module 103 is used to determine a first aging parameter adjustment value of the first aging parameter evaluation value according to the operation parameter data, and to determine a second aging parameter adjustment value of the first aging parameter evaluation value according to the deployment environment parameter data and the deployment duration;

[0086] The evaluation value adjustment module 104 is configured to adjust the first aging parameter evaluation value based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated.

[0087] It can be seen from the above scheme that the current laying time and service life of the cable to be evaluated are obtained, and the first aging parameter evaluation value of the cable to be evaluated is determined according to the current laying time and service life of the cable to be evaluated, and the operating parameter data and laying environment parameter data of the cable to be evaluated during the laying time are obtained, and the first aging parameter adjustment value of the first aging parameter evaluation value is determined according to the operating parameter data, and the second aging parameter adjustment value of the first aging parameter evaluation value is determined according to the laying environment parameter data and the laying time, and the first aging parameter evaluation value is adjusted based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain the final aging parameter evaluation value of the cable to be evaluated. This scheme performs aging evaluation through the environment and operating parameters of the cable, which solves the problem that the reference factors in the existing cable aging evaluation technology are too single, and the different actual usage conditions of the cable are not reasonably considered, resulting in low accuracy of the cable aging evaluation information, and can more accurately and reasonably obtain cable aging evaluation data for subsequent maintenance processing.

[0088] In a possible embodiment, the evaluation value determination module 102 is specifically configured to:

[0089] The installation time is divided by the service life to obtain the aging parameter evaluation value to be adjusted, and the first aging parameter evaluation value of the cable to be evaluated is determined based on the preset aging increase value corresponding to the unit installation time and the aging parameter evaluation value to be adjusted.

[0090] In a possible embodiment, the evaluation value determination module 102 is further configured to:

[0091] The total aging increase value is obtained by dividing the laying time by the unit laying time and multiplying the result by the preset aging increase value, and the aging parameter evaluation value to be adjusted and the total aging increase value are superimposed to obtain the first aging parameter evaluation value of the cable to be evaluated.

[0092] In a possible embodiment, the adjustment value determination module 103 is specifically configured to:

[0093] Determine the voltage fluctuation amplitude of the cable to be evaluated according to the multiple voltage parameter values ​​within the installation time, and calculate the current average value of the multiple current parameter values ​​within the installation time;

[0094] A first aging parameter adjustment value of the first aging parameter evaluation value is determined based on the voltage fluctuation amplitude and the current average value.

[0095] In a possible embodiment, the adjustment value determination module 103 is further configured to:

[0096] When the voltage fluctuation amplitude is greater than the preset fluctuation amplitude, the voltage influence adjustment value is determined according to the difference between the voltage fluctuation amplitude and the preset fluctuation amplitude; when the current average value is greater than the preset current value, the current influence adjustment value is determined according to the difference between the current average value and the preset current value;

[0097] A sum of the voltage impact adjustment value and the current impact adjustment value is determined as a first aging parameter adjustment value of the first aging parameter evaluation value.

[0098] In a possible embodiment, the adjustment value determination module 103 is further configured to:

[0099] Determine the environmental aging impact level of the cable to be evaluated according to the installation environment parameter data, determine a preset adjustment value mapping table corresponding to the environmental aging impact level, and query the preset adjustment value mapping table according to the installation duration to obtain a second aging parameter adjustment value of the first aging parameter evaluation value.

[0100] In a possible embodiment, the adjustment value determination module 103 is further configured to:

[0101] Determine respectively the preset numerical value intervals of the corresponding deployment environment factors into which the values ​​of the deployment environment factors fall, and form the preset numerical value intervals of the corresponding deployment environment factors into interval combinations;

[0102] The environmental aging impact level of the cable to be evaluated is obtained by searching a comparison table of different preset interval combinations and corresponding environmental aging impact levels according to the interval combination.

[0103] Figure 6 A schematic diagram of the structure of a cable aging assessment device based on environment and operating parameters provided by an embodiment of the present invention, such as Figure 6 As shown, the device includes a processor 201, a memory 202, an input device 203 and an output device 204; the number of processors 201 in the device can be one or more. Figure 6 A processor 201 is taken as an example; the processor 201, memory 202, input device 203 and output device 204 in the device can be connected by a bus or other means. Figure 6In the example, the connection through the bus is taken. The memory 202, as a computer-readable storage medium, can be used to store software programs, computer executable programs and modules, such as program instructions or modules corresponding to the cable aging assessment method based on environment and operating parameters in the embodiment of the present invention. The processor 201 executes various functional applications and data processing of the device by running the software programs, instructions and modules stored in the memory 202, that is, realizes the above-mentioned cable aging assessment method based on environment and operating parameters. The input device 203 can be used to receive input digital or character information, and generate key signal input related to user settings and function control of the device. The output device 204 may include a display device such as a display screen.

[0104] An embodiment of the present invention further provides a storage medium containing computer executable instructions, wherein the computer executable instructions are used to execute a cable aging assessment method based on environment and operating parameters when executed by a computer processor, the method comprising:

[0105] Obtaining the current installation time and service life of the cable to be evaluated, and determining a first aging parameter evaluation value of the cable to be evaluated according to the installation time and service life;

[0106] Acquire operation parameter data and installation environment parameter data of the cable to be evaluated during the installation duration, determine a first aging parameter adjustment value of the first aging parameter evaluation value according to the operation parameter data, and determine a second aging parameter adjustment value of the first aging parameter evaluation value according to the installation environment parameter data and the installation duration;

[0107] The first aging parameter evaluation value is adjusted based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated.

[0108] It is worth noting that in the embodiment of the cable aging assessment method system based on environment and operating parameters, the various units and modules included are only divided according to functional logic, but are not limited to the above 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 protection scope of the embodiments of the present invention.

[0109] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the embodiments of the present invention are 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 protection scope of the embodiments of the present invention. Therefore, although the embodiments of the present invention are described in more detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the embodiments of the present invention, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.

Claims

1. A cable aging assessment method based on environmental and operating parameters, characterized in that: include: Obtaining the current installation time and service life of the cable to be evaluated, and determining a first aging parameter evaluation value of the cable to be evaluated according to the installation time and service life; Acquire operation parameter data and installation environment parameter data of the cable to be evaluated during the installation duration, determine a first aging parameter adjustment value of the first aging parameter evaluation value according to the operation parameter data, and determine a second aging parameter adjustment value of the first aging parameter evaluation value according to the installation environment parameter data and the installation duration; The first aging parameter evaluation value is adjusted based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated.

2. The cable aging assessment method based on environment and operating parameters according to claim 1 is characterized in that: The determining the first aging parameter evaluation value of the cable to be evaluated according to the installation time and the service life includes: The installation time is divided by the service life to obtain the aging parameter evaluation value to be adjusted, and the first aging parameter evaluation value of the cable to be evaluated is determined based on the preset aging increase value corresponding to the unit installation time and the aging parameter evaluation value to be adjusted.

3. The cable aging assessment method based on environment and operating parameters according to claim 2 is characterized in that: The determining the first aging parameter evaluation value of the cable to be evaluated based on the preset aging increase value corresponding to the unit laying time and the aging parameter evaluation value to be adjusted includes: The total aging increase value is obtained by dividing the laying time by the unit laying time and multiplying the result by the preset aging increase value, and the aging parameter evaluation value to be adjusted and the total aging increase value are superimposed to obtain the first aging parameter evaluation value of the cable to be evaluated.

4. The cable aging assessment method based on environment and operating parameters according to any one of claims 1 to 3, characterized in that: The operating parameter data includes a plurality of voltage parameter values ​​and a plurality of current parameter values, and the first aging parameter adjustment value of the first aging parameter evaluation value determined according to the operating parameter data includes: Determine the voltage fluctuation amplitude of the cable to be evaluated according to the multiple voltage parameter values ​​within the installation time, and calculate the current average value of the multiple current parameter values ​​within the installation time; A first aging parameter adjustment value of the first aging parameter evaluation value is determined based on the voltage fluctuation amplitude and the current average value.

5. The cable aging assessment method based on environment and operating parameters according to claim 4 is characterized in that: The determining the first aging parameter adjustment value of the first aging parameter evaluation value based on the voltage fluctuation amplitude and the current average value includes: When the voltage fluctuation amplitude is greater than the preset fluctuation amplitude, the voltage influence adjustment value is determined according to the difference between the voltage fluctuation amplitude and the preset fluctuation amplitude; when the current average value is greater than the preset current value, the current influence adjustment value is determined according to the difference between the current average value and the preset current value; A sum of the voltage impact adjustment value and the current impact adjustment value is determined as a first aging parameter adjustment value of the first aging parameter evaluation value.

6. The cable aging assessment method based on environment and operation parameters according to any one of claims 1 to 3, characterized in that: The determining the second aging parameter adjustment value of the first aging parameter evaluation value according to the deployment environment parameter data and the deployment duration includes: Determine the environmental aging impact level of the cable to be evaluated according to the installation environment parameter data, determine a preset adjustment value mapping table corresponding to the environmental aging impact level, and query the preset adjustment value mapping table according to the installation duration to obtain a second aging parameter adjustment value of the first aging parameter evaluation value.

7. The cable aging assessment method based on environment and operating parameters according to claim 6, characterized in that: The installation environment parameter data includes a plurality of installation environment factors and corresponding installation environment factor values. The step of determining the environmental aging impact level of the cable to be evaluated according to the installation environment parameter data includes: Determine respectively the preset numerical value intervals of the corresponding deployment environment factors into which the values ​​of the deployment environment factors fall, and form the preset numerical value intervals of the corresponding deployment environment factors into interval combinations; The environmental aging impact level of the cable to be evaluated is obtained by searching a comparison table of different preset interval combinations and corresponding environmental aging impact levels according to the interval combination.

8. Cable aging assessment system based on environmental and operating parameters, characterized in that: include: An acquisition module is used to obtain the current laying time and service life of the cable to be evaluated; An evaluation value determination module, used to determine a first aging parameter evaluation value of the cable to be evaluated according to the installation time and the service life; The acquisition module is further used to acquire the operating parameter data and the laying environment parameter data of the cable to be evaluated during the laying time; an adjustment value determination module, configured to determine a first aging parameter adjustment value of the first aging parameter evaluation value according to the operation parameter data, and to determine a second aging parameter adjustment value of the first aging parameter evaluation value according to the deployment environment parameter data and the deployment duration; An evaluation value adjustment module is used to adjust the first aging parameter evaluation value based on the first aging parameter adjustment value and the second aging parameter adjustment value to obtain a final aging parameter evaluation value of the cable to be evaluated.

9. A cable aging assessment device based on environmental and operating parameters, the device comprising: 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 cable aging assessment method based on environmental and operating parameters as described in any one of claims 1-7.

10. A storage medium storing computer executable instructions, wherein the computer executable instructions are used to execute the cable aging assessment method based on environment and operation parameters as described in any one of claims 1 to 7 when executed by a computer processor.

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