Cable fault reason determination system and method based on parameter sequential relationship

Abstract

The embodiment of the invention discloses a cable fault reason determination system and method based on a parameter time sequence relation, and the method comprises the steps: obtaining a plurality of fault parameter values of a preset time length before a fault when the occurrence of the cable fault is monitored, determining a plurality of abnormal parameter values and non-abnormal parameter values in the fault parameter values according to a preset abnormal condition, combining the abnormal parameter values according to a time sequence relationship to obtain first time sequence evaluation information, and combining the non-abnormal parameter values according to the time sequence relationship to obtain second time sequence evaluation information, and carrying out matching processing on the basis of the first time sequence evaluation information and the second time sequence evaluation information and pre-stored historical fault parameter value combinations, and determining a historical fault reason correspondingly associated with the successfully matched pre-stored historical fault value combinations as the fault reason of the cable. According to the scheme, the fault reason can be determined through the parameter time sequence combination before the cable fault occurs, so that the cable fault identification accuracy is higher, and more accurate reference data is provided for subsequent maintenance work.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of cable technology, and in particular to a system and method for determining the cause of a cable fault based on a parameter timing relationship. Background Art

[0002] In modern society, power supply is vital to the normal operation of various industries and life. As an important part of power transmission, cables may cause power outages, equipment damage and even catastrophic consequences once they fail, directly affecting the continuity and stability of power supply, and then affecting the normal production of various industries and people's lives. Cable failures not only affect the operation of the power system, but may also threaten human life. By determining the cause of the cable failure, effective measures can be taken to repair and prevent it, avoid the expansion of cable failures, thereby reducing the cost of replacement or overhaul and improving the reliability of the power system. For example, if the cable failure is caused by improper design or installation, similar problems can be avoided from happening again by analyzing the cause of the failure and taking corresponding improvement measures.

[0003] With the popularization of intelligent cables, various cable parameters can be monitored and displayed through the cable monitoring platform. Most cable faults are determined by detecting the values ​​of various parameters. However, the accuracy of this method of determining the cause of the fault is low, and the cause of the cable failure cannot be accurately determined, resulting in low subsequent maintenance efficiency. Summary of the invention

[0004] The embodiments of the present invention provide a system and method for determining the cause of a cable fault based on a parameter timing relationship, which solves the problem that the fault cause determination method in the existing cable monitoring platform has low accuracy, cannot accurately determine the cause of the cable fault, and leads to low subsequent maintenance efficiency. The fault cause can be determined by the parameter timing combination before the cable fault occurs, so that the cable fault identification accuracy is higher, and more accurate reference data is provided for subsequent maintenance work.

[0005] In a first aspect, an embodiment of the present invention provides a method for determining a cable fault cause based on a parameter time sequence relationship, comprising:

[0006] When a cable fault is detected, a plurality of fault parameter values ​​of a preset time before the cable fault are obtained, and a plurality of abnormal parameter values ​​and a non-abnormal parameter value among the fault parameter values ​​are determined according to preset abnormal conditions;

[0007] Combining the abnormal parameter values ​​according to a timing relationship to obtain first timing evaluation information, combining the non-abnormal parameter values ​​according to a timing relationship to obtain second timing evaluation information, and performing matching processing based on the first timing evaluation information and the second timing evaluation information and a plurality of pre-stored historical fault parameter value combinations;

[0008] The historical fault cause associated with the successfully matched pre-stored historical fault value combination is determined as the fault cause of the cable.

[0009] Optionally, the determining, according to a preset abnormal condition, a plurality of abnormal parameter values ​​and a non-abnormal parameter value in the fault parameter value includes:

[0010] Each fault parameter value is compared with the corresponding preset comparison value, and the fault parameter value greater than the preset comparison value is determined as the first abnormal parameter value, and the abnormal parameter value and the non-abnormal parameter value are determined based on the first abnormal parameter value.

[0011] Optionally, determining an abnormal parameter value and a non-abnormal parameter value based on the first abnormal parameter value includes:

[0012] Calculating the difference between adjacent fault parameter values ​​other than the first abnormal parameter value in the fault parameter values, and when the difference is greater than a preset difference, determining the fault parameter value arranged later in the time sequence relationship as the second abnormal parameter value;

[0013] The first abnormal parameter value and the second abnormal parameter value are combined into an abnormal parameter value, and the remaining fault parameter values ​​are determined as non-abnormal parameter values.

[0014] Optionally, the pre-stored historical fault parameter value combination includes each historical fault parameter value within the preset time length, and the matching processing based on the first timing evaluation information and the second timing evaluation information and multiple pre-stored historical fault parameter value combinations includes:

[0015] According to the timing relationship of the first timing evaluation information, a plurality of corresponding historical fault parameter values ​​are determined in the pre-stored historical fault parameter value combination and determined as first matching information; according to the timing relationship of the second timing evaluation information, a plurality of corresponding historical fault parameter values ​​are determined in the pre-stored historical fault parameter value combination and determined as second matching information;

[0016] Matching processing is performed on the first timing evaluation information and the second timing evaluation information based on the first matching information and the second matching information respectively.

[0017] Optionally, the performing matching processing on the first timing evaluation information and the second timing evaluation information respectively based on the first matching information and the second matching information includes:

[0018] A first similarity between the first timing evaluation information and the first matching information and a second similarity between the second timing evaluation information and the second matching information are calculated, and a matching processing result is determined according to the first similarity and the second similarity.

[0019] Optionally, determining a matching result according to the first similarity and the second similarity includes:

[0020] When the first similarity is greater than a first preset similarity and the second similarity is greater than a second preset similarity, it is determined that the corresponding pre-stored historical fault value combination successfully matches the first timing evaluation information and the second timing evaluation information.

[0021] Optionally, determining a matching result according to the first similarity and the second similarity includes:

[0022] The first similarity and the second similarity are respectively multiplied with the corresponding first preset weight and second preset weight and superimposed to obtain a comprehensive similarity. When the comprehensive similarity is greater than the preset similarity, it is determined that the corresponding pre-stored historical fault value combination successfully matches the first timing evaluation information and the second timing evaluation information.

[0023] In a second aspect, an embodiment of the present invention further provides a cable fault cause determination system based on parameter time sequence relationship, comprising:

[0024] An acquisition module, used for acquiring multiple fault parameter values ​​of a preset time before the cable fault when a cable fault is detected;

[0025] A numerical abnormality classification module, used for determining a plurality of abnormal parameter values ​​and a non-abnormal parameter value in the fault parameter value according to a preset abnormal condition;

[0026] An evaluation information combination module, used to combine the abnormal parameter values ​​according to a time series relationship to obtain first time series evaluation information, and to combine the non-abnormal parameter values ​​according to a time series relationship to obtain second time series evaluation information;

[0027] A matching processing module, configured to perform matching processing based on the first timing evaluation information and the second timing evaluation information and a plurality of pre-stored historical fault parameter value combinations;

[0028] The fault cause determination module is used to determine the historical fault cause associated with the successfully matched pre-stored historical fault value combination as the fault cause of the cable.

[0029] In a third aspect, an embodiment of the present invention further provides a device for determining a cable fault cause based on a parameter time sequence relationship, the device comprising:

[0030] one or more processors;

[0031] a storage device for storing one or more programs,

[0032] When the one or more programs are executed by the one or more processors, the one or more processors implement the method for determining the cause of a cable fault based on a parameter timing relationship described in an embodiment of the present invention.

[0033] 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 method for determining the cause of a cable fault based on a parameter timing relationship described in an embodiment of the present invention.

[0034] In an embodiment of the present invention, when a cable fault is detected, multiple fault parameter values ​​of a preset time before the cable fault are obtained, multiple abnormal parameter values ​​and non-abnormal parameter values ​​among the multiple fault parameter values ​​are determined according to preset abnormal conditions, the abnormal parameter values ​​are combined according to a time series relationship to obtain a first time series evaluation information, the non-abnormal parameter values ​​are combined according to a time series relationship to obtain a second time series evaluation information, and matching processing is performed based on the first time series evaluation information and the second time series evaluation information with a pre-stored historical fault parameter value combination, and the historical fault cause corresponding to the successfully matched pre-stored historical fault value combination is determined as the cable fault cause. This solution determines the fault cause through a parameter time series combination before the cable fault occurs, which solves the problem that the fault cause determination method in the existing cable monitoring platform is of low accuracy, and the fault cause of the cable cannot be accurately determined, resulting in low subsequent maintenance efficiency. It can make the cable fault identification more accurate and provide more accurate reference data for subsequent maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A flowchart of a method for determining the cause of a cable fault based on a parameter timing relationship provided by an embodiment of the present invention;

[0036] Figure 2 A flowchart of another method for determining the cause of a cable fault based on a parameter timing relationship provided by an embodiment of the present invention;

[0037] Figure 3A flowchart of another method for determining the cause of a cable fault based on a parameter timing relationship provided by an embodiment of the present invention;

[0038] Figure 4 A flowchart of another method for determining the cause of a cable fault based on a parameter timing relationship provided by an embodiment of the present invention;

[0039] Figure 5 A module structure block diagram of a cable fault cause determination system based on parameter timing relationship provided by an embodiment of the present invention;

[0040] Figure 6 A schematic diagram of the structure of a device for determining the cause of a cable fault based on a parameter timing relationship provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] The cable fault cause determination method based on parameter timing relationship provided in the embodiment of the present application can be applied to the cable fault cause determination scenario. The cable fault cause determination method based on parameter timing relationship 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.

[0044] Figure 1 A flowchart of a method for determining a cable fault cause based on a parameter timing relationship provided by an embodiment of the present invention, such as Figure 1 As shown, specifically including:

[0045] Step S101: when a cable fault is detected, a plurality of fault parameter values ​​of a preset time before the cable fault are obtained, and a plurality of abnormal parameter values ​​and a non-abnormal parameter value among the fault parameter values ​​are determined according to preset abnormal conditions.

[0046] Among them, the preset duration can be the length of time pre-set by relevant personnel according to actual conditions, without fixed restrictions. The fault parameter value is used to characterize the value of the parameter of the cable fault collected. The abnormal parameter value is used to characterize the abnormal value in the fault parameter value within the preset time before the cable fault, and the non-abnormal parameter value is used to characterize the value that does not appear abnormal in the fault parameter value within the preset time before the cable fault. In one embodiment, when a cable fault is detected, multiple fault parameter values ​​of the preset time before the cable fault are obtained, and the fault parameter values ​​that meet the preset abnormal conditions are determined as abnormal parameter values, and the fault parameter values ​​that do not meet the preset abnormal conditions are determined as non-abnormal parameter values. Optionally, each fault parameter value is compared with the corresponding preset comparison value, and the fault parameter value greater than the preset comparison value is determined as the first abnormal parameter value, and the abnormal parameter value and the non-abnormal parameter value are determined based on the first abnormal parameter value. Distinguishing the fault parameter values ​​within a period of time before the cable fault can provide more reference factors for the subsequent determination of the cause of the fault, and ensure the accuracy and rationality of the cause of the fault.

[0047] Step S102: Combining the abnormal parameter values ​​according to a time series relationship to obtain first time series evaluation information, and combining the non-abnormal parameter values ​​according to a time series relationship to obtain second time series evaluation information.

[0048] The timing relationship may be a time-series arrangement relationship between data or events, and the first timing evaluation information and the second timing evaluation information are used to characterize information used to determine the cause of the cable fault. In one embodiment, each abnormal parameter value is arranged from front to back according to the corresponding acquisition time and combined into the first timing evaluation information, and each non-abnormal parameter value is arranged from front to back according to the corresponding acquisition time and combined into the second timing evaluation information. An exemplary example may be that the preset time length is 1 hour, the fault parameter is a temperature parameter, and the temperature parameter values ​​of the cable within 1 hour before the fault occur are arranged in the order of 40°C, 60°C, 65°C, 75°C, 85°C, and 95°C from front to back in time, wherein the abnormal parameter values ​​are 95°C, 85°C, 75°C, and 60°C, and the non-abnormal parameter values ​​are 65°C and 40°C, and the abnormal parameter values ​​are combined into 60°C, 75°C, 85°C, and 95°C in the order of arrangement from front to back in time, and the non-abnormal parameter values ​​are combined into 40°C and 65°C in the order of arrangement from front to back in time, that is, the first time series evaluation information is 60°C, 75°C, 85°C, and 95°C, and the second evaluation information is 40°C and 65°C. In another embodiment, the values ​​of each abnormal parameter are arranged from back to front according to the corresponding acquisition time and combined into the first time series evaluation information, and the values ​​of each non-abnormal parameter are arranged from back to front according to the corresponding acquisition time and combined into the second time series evaluation information.

[0049] Step S103: performing matching processing with a plurality of pre-stored historical fault parameter value combinations based on the first timing evaluation information and the second timing evaluation information, and determining the historical fault cause associated with the successfully matched pre-stored historical fault value combination as the fault cause of the cable.

[0050] Among them, the pre-stored historical fault parameter value combination is used to characterize the value combination of the pre-stored fault parameters when the fault occurred in the past, and the historical fault cause is used to characterize the cable fault cause determined correspondingly when the pre-stored historical fault value combination is historically monitored. In one embodiment, the first timing evaluation information and the second timing evaluation information are matched with a plurality of pre-stored historical fault parameter value combinations according to the acquisition time, and the historical fault cause corresponding to the successfully matched pre-stored historical fault value combination is determined as the fault cause of the cable. An illustrative example may be that the first timing evaluation information and the second timing evaluation information are matched with a plurality of pre-stored historical fault parameter value combinations according to the acquisition time, and the successfully matched pre-stored historical fault value combination is a historical fault value combination a, and the historical fault cause corresponding to the historical fault value combination a is a cable short circuit, and the cable short circuit is determined as the fault cause of the current cable. Optionally, the pre-stored historical fault parameter value combination includes each historical fault parameter value within a preset time length, and a matching processing method may be: according to the timing relationship of the first timing evaluation information, the corresponding multiple historical fault parameter values ​​are determined in the pre-stored historical fault parameter value combination and determined as the first matching information, according to the timing relationship of the second timing evaluation information, the corresponding multiple historical fault parameter values ​​are determined in the pre-stored historical fault parameter value combination and determined as the second matching information, and the first timing evaluation information and the second timing evaluation information are matched based on the first matching information and the second matching information. By matching the first timing evaluation information and the second timing evaluation information with each historical fault parameter value within the preset time length according to the timing relationship, the accuracy and rationality of the matching result can be improved.

[0051] As can be seen from the above, when a cable fault is detected, multiple fault parameter values ​​of a preset time before the cable fault are obtained, multiple abnormal parameter values ​​and non-abnormal parameter values ​​among the multiple fault parameter values ​​are determined according to preset abnormal conditions, the abnormal parameter values ​​are combined according to the timing relationship to obtain the first timing evaluation information, and the non-abnormal parameter values ​​are combined according to the timing relationship to obtain the second timing evaluation information, and matching processing is performed based on the first timing evaluation information and the second timing evaluation information with the pre-stored historical fault parameter value combination, and the historical fault cause corresponding to the successfully matched pre-stored historical fault value combination is determined as the cable fault cause. This solution determines the cause of the fault through the parameter timing combination before the cable fault occurs, which solves the problem that the accuracy of the fault cause determination method in the existing cable monitoring platform is low, and the cause of the cable fault cannot be accurately determined, resulting in low subsequent maintenance efficiency. It can make the cable fault identification more accurate and provide more accurate reference data for subsequent maintenance work.

[0052] Figure 2A flowchart of another method for determining the cause of a cable fault based on a parameter time series relationship provided by an embodiment of the present invention, wherein a specific process of an optional method for classifying abnormal fault parameter values ​​is given, such as Figure 2 As shown, specifically including:

[0053] Step S201: When a cable fault is detected, multiple fault parameter values ​​of a preset time before the cable fault are obtained, each fault parameter value is compared with a corresponding preset comparison value, and a fault parameter value greater than the preset comparison value is determined as a first abnormal parameter value, and an abnormal parameter value and a non-abnormal parameter value are determined based on the first abnormal parameter value.

[0054] Among them, the preset comparison value is used to characterize the preset value for comparison with the fault parameter value, and one fault parameter corresponds to one preset comparison value. When a cable fault is detected, multiple fault parameter values ​​of a preset time before the cable fault are obtained, and each fault parameter value is compared with the corresponding preset comparison value, and the fault parameter value greater than the preset comparison value is determined as the first abnormal parameter value, and the abnormal parameter value and the non-abnormal parameter value are determined based on the first abnormal parameter value. Optionally, the difference between the adjacent fault parameter values ​​other than the first abnormal parameter value in the fault parameter value is calculated. When the difference is greater than the preset difference, the fault parameter value arranged in the latter time sequence relationship is determined as the second abnormal parameter value, the first abnormal parameter value and the second abnormal parameter value are combined into an abnormal parameter value, and the remaining fault parameter values ​​are determined as non-abnormal parameter values. An exemplary example may be that the preset duration is 1 hour, the fault parameter is a temperature parameter, and the temperature parameter values ​​of the cable within 1 hour before the fault are arranged in the order of 40°C, 60°C, 65°C, 75°C, 85°C, and 95°C from front to back in time. The preset comparison value corresponding to the temperature parameter is 70°C, and the fault parameter value greater than the preset comparison value, that is, the first abnormal parameter value, is 75°C, 85°C, and 95°C. The fault parameter values ​​other than the first abnormal parameter value are 40°C, 60°C, and 65°C, wherein the difference between 40°C and 60°C is 20, the difference between 60°C and 65°C is 5, the preset difference is 10, the difference between 40°C and 60°C is greater than the preset difference, and 60°C is arranged at the end, then 60°C is determined as the second abnormal parameter value, that is, the abnormal parameter values ​​are 60°C, 75°C, 85°C, and 95°C, and the non-abnormal parameter values ​​are 40°C and 65°C. In another embodiment, the first abnormal parameter value is determined as the abnormal parameter value, and the fault parameter values ​​other than the first abnormal parameter value among the fault parameter values ​​are determined as non-abnormal parameter values.

[0055] Step S202: Combining the abnormal parameter values ​​according to a time series relationship to obtain first time series evaluation information, and combining the non-abnormal parameter values ​​according to a time series relationship to obtain second time series evaluation information.

[0056] Step S203: performing matching processing with a plurality of pre-stored historical fault parameter value combinations based on the first timing evaluation information and the second timing evaluation information, and determining the historical fault cause associated with the successfully matched pre-stored historical fault value combination as the fault cause of the cable.

[0057] As can be seen from the above, when a cable fault is detected, multiple fault parameter values ​​of a preset time before the cable fault are obtained, each fault parameter value is compared with the corresponding preset comparison value, and the fault parameter value greater than the preset comparison value is determined as the first abnormal parameter value, and the abnormal parameter value and the non-abnormal parameter value are determined based on the first abnormal parameter value. This solution distinguishes the fault parameter values ​​within a period of time before the cable fault as abnormal, which can provide more reference factors for the subsequent determination of the cause of the fault, and ensure the accuracy and rationality of the cause of the fault.

[0058] Figure 3 A flowchart of another method for determining the cause of a cable fault based on a parameter timing relationship provided by an embodiment of the present invention, wherein a specific process of an optional matching processing method is given, such as Figure 3 As shown, specifically including:

[0059] Step S301: when a cable fault is detected, a plurality of fault parameter values ​​of a preset time before the cable fault are obtained, and a plurality of abnormal parameter values ​​and a non-abnormal parameter value among the fault parameter values ​​are determined according to preset abnormal conditions.

[0060] Step S302: Combining the abnormal parameter values ​​according to a time series relationship to obtain first time series evaluation information, and combining the non-abnormal parameter values ​​according to a time series relationship to obtain second time series evaluation information.

[0061] Step S303: determine the corresponding multiple historical fault parameter values ​​in the pre-stored historical fault parameter value combination according to the timing relationship of the first timing evaluation information and determine them as the first matching information; determine the corresponding multiple historical fault parameter values ​​in the pre-stored historical fault parameter value combination according to the timing relationship of the second timing evaluation information and determine them as the second matching information.

[0062] Among them, in one embodiment, the historical fault parameter values ​​of each time point corresponding to the first timing evaluation information are determined in the pre-stored historical fault parameter value combination and are sorted in chronological order and combined into the first matching information, and the historical fault parameter values ​​of each time point corresponding to the second timing evaluation information are determined in the pre-stored historical fault parameter value combination and are sorted in chronological order and combined into the second matching information. An exemplary example may be that the fault parameter is a temperature parameter, the preset duration is 1 hour, the historical temperature parameter values ​​in the pre-stored historical temperature parameter value combination a are arranged in the order of 42°C, 60°C, 68°C, 76°C, 85°C, and 95°C from front to back in time, the first timing evaluation information includes the temperature parameter values ​​of the 20th minute, the 40th minute, the 50th minute, and the 60th minute, and the second timing evaluation information includes the temperature parameter values ​​of the 10th minute and the 30th minute. Then the first matching information is the historical temperature parameter values ​​of the 20th minute, the 40th minute, the 50th minute, and the 60th minute in the pre-stored historical temperature parameter value combination a, which are arranged in chronological order as 60°C, 76°C, 85°C, and 95°C. The second matching information is the historical temperature parameter values ​​of the 10th minute and the 30th minute in the pre-stored historical temperature parameter value combination a, which are arranged in chronological order as 42°C and 68°C.

[0063] Step S304: matching the first timing evaluation information and the second timing evaluation information respectively based on the first matching information and the second matching information, and determining the historical fault cause associated with the successfully matched pre-stored historical fault value combination as the fault cause of the cable.

[0064] Wherein, after determining the first matching information and the second matching information, the first timing evaluation information and the second timing evaluation information are matched based on the first matching information and the second matching information. Optionally, a first similarity between the first timing evaluation information and the first matching information and a second similarity between the second timing evaluation information and the second matching information are calculated, and the matching processing result is determined according to the first similarity and the second similarity. In another embodiment, a first match is performed on the historical fault parameter values ​​in the first matching information and the abnormal parameter values ​​in the first timing evaluation information, and a second match is performed on the historical fault parameter values ​​in the second matching information and the non-abnormal parameter values ​​in the second timing evaluation information, and a pre-stored historical fault parameter value combination for which the first matching result is a complete match and the second matching result has the highest degree of match is determined as a pre-stored historical fault parameter value combination for which the match is successful.

[0065] As can be seen from the above, according to the timing relationship of the first timing evaluation information, the corresponding multiple historical fault parameter values ​​are determined in the pre-stored historical fault parameter value combination and determined as the first matching information, according to the timing relationship of the second timing evaluation information, the corresponding multiple historical fault parameter values ​​are determined in the pre-stored historical fault parameter value combination and determined as the second matching information, and the first timing evaluation information and the second timing evaluation information are matched based on the first matching information and the second matching information. This solution can improve the accuracy and rationality of the matching result by matching the first timing evaluation information and the second timing evaluation information with each historical fault parameter value within a preset time length according to the timing relationship.

[0066] Figure 4 A flowchart of another method for determining the cause of a cable fault based on a parameter timing relationship provided by an embodiment of the present invention, wherein a specific process of an optional matching processing method is given, such as Figure 4 As shown, specifically including:

[0067] Step S401: when a cable fault is detected, a plurality of fault parameter values ​​of a preset time before the cable fault are obtained, and a plurality of abnormal parameter values ​​and a non-abnormal parameter value among the fault parameter values ​​are determined according to preset abnormal conditions.

[0068] Step S402: Combining the abnormal parameter values ​​according to a time series relationship to obtain first time series evaluation information, and combining the non-abnormal parameter values ​​according to a time series relationship to obtain second time series evaluation information.

[0069] Step S403: determine the corresponding multiple historical fault parameter values ​​in the pre-stored historical fault parameter value combination according to the timing relationship of the first timing evaluation information and determine them as the first matching information; determine the corresponding multiple historical fault parameter values ​​in the pre-stored historical fault parameter value combination according to the timing relationship of the second timing evaluation information and determine them as the second matching information.

[0070] Step S404, calculate the first similarity between the first timing evaluation information and the first matching information, and the second similarity between the second timing evaluation information and the second matching information, determine the matching processing result according to the first similarity and the second similarity, and determine the historical fault cause corresponding to the successfully matched pre-stored historical fault value combination as the fault cause of the cable.

[0071] After determining the first matching information and the second matching information, the first similarity between the first timing evaluation information and the first matching information and the second similarity between the second timing evaluation information and the second matching information are calculated, and the matching processing result is determined according to the first similarity and the second similarity. Optionally, when the first similarity is greater than the first preset similarity and the second similarity is greater than the second preset similarity, it is determined that the corresponding pre-stored historical fault value combination matches the first timing evaluation information and the second timing evaluation information successfully. An exemplary example may be that the pre-stored historical fault value combination corresponding to the first matching information and the second matching information is the pre-stored historical fault value combination a, the first similarity between the first timing evaluation information and the first matching information is calculated to be 99%, the second similarity between the second timing evaluation information and the second matching information is 95%, the first preset similarity is 95%, the second preset similarity is 90%, the first similarity is greater than the first preset similarity and the second similarity is greater than the second preset similarity, then it is determined that the pre-stored historical fault value combination a matches the first timing evaluation information and the second timing evaluation information successfully.

[0072] In another embodiment, the first similarity and the second similarity are respectively multiplied by the corresponding first preset weight and the second preset weight and superimposed to obtain a comprehensive similarity. When the comprehensive similarity is greater than the preset similarity, it is determined that the corresponding pre-stored historical fault value combination matches the first timing evaluation information and the second timing evaluation information successfully. An exemplary example may be that the pre-stored historical fault value combination corresponding to the first matching information and the second matching information is the pre-stored historical fault value combination a, the first similarity between the first timing evaluation information and the first matching information is calculated to be 99%, the second similarity between the second timing evaluation information and the second matching information is 95%, the first preset weight is 0.8, the second preset similarity is 0.2, the comprehensive similarity is calculated to be 98.2% (99%*0.8+95%*0.2), the preset similarity is 96%, the comprehensive similarity is greater than the preset similarity, and it is determined that the pre-stored historical fault value combination a matches the first timing evaluation information and the second timing evaluation information successfully.

[0073] As can be seen from the above, the first similarity between the first timing evaluation information and the first matching information and the second similarity between the second timing evaluation information and the second matching information are calculated, and the matching processing result is determined according to the first similarity and the second similarity. This solution performs matching processing by the similarity between the timing evaluation information and the corresponding historical fault parameter value, which can improve the accuracy and rationality of the matching result.

[0074] Figure 5The module structure block diagram of a cable fault cause determination system based on parameter timing relationship provided by an embodiment of the present invention is used to execute the cable fault cause determination method based on parameter timing relationship 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:

[0075] An acquisition module 101 is used to acquire multiple fault parameter values ​​of a preset time before the cable fault when a cable fault is detected;

[0076] A numerical abnormality classification module 102 is used to determine a plurality of abnormal parameter values ​​and a non-abnormal parameter value in the fault parameter value according to a preset abnormal condition;

[0077] An evaluation information combination module 103, configured to combine the abnormal parameter values ​​according to a time series relationship to obtain first time series evaluation information, and to combine the non-abnormal parameter values ​​according to a time series relationship to obtain second time series evaluation information;

[0078] A matching processing module 104, configured to perform matching processing based on the first timing evaluation information and the second timing evaluation information and a plurality of pre-stored historical fault parameter value combinations;

[0079] The fault cause determination module 105 is used to determine the historical fault cause associated with the successfully matched pre-stored historical fault value combination as the fault cause of the cable.

[0080] It can be seen from the above scheme that when a cable fault is detected, multiple fault parameter values ​​of a preset time before the cable fault are obtained, multiple abnormal parameter values ​​and non-abnormal parameter values ​​among the multiple fault parameter values ​​are determined according to preset abnormal conditions, the abnormal parameter values ​​are combined according to the timing relationship to obtain the first timing evaluation information, and the non-abnormal parameter values ​​are combined according to the timing relationship to obtain the second timing evaluation information, and matching processing is performed based on the first timing evaluation information and the second timing evaluation information with the pre-stored historical fault parameter value combination, and the historical fault cause corresponding to the successfully matched pre-stored historical fault value combination is determined as the cable fault cause. This scheme determines the fault cause through the parameter timing combination before the cable fault occurs, which solves the problem that the fault cause determination method in the existing cable monitoring platform is of low accuracy, and the fault cause of the cable cannot be accurately determined, resulting in low subsequent maintenance efficiency. It can make the cable fault identification more accurate and provide more accurate reference data for subsequent maintenance work.

[0081] In a possible embodiment, the numerical anomaly classification module 102 is specifically used to:

[0082] Each fault parameter value is compared with the corresponding preset comparison value, and the fault parameter value greater than the preset comparison value is determined as the first abnormal parameter value, and the abnormal parameter value and the non-abnormal parameter value are determined based on the first abnormal parameter value.

[0083] In a possible embodiment, the numerical anomaly classification module 102 is further configured to:

[0084] Calculating the difference between adjacent fault parameter values ​​other than the first abnormal parameter value in the fault parameter values, and when the difference is greater than a preset difference, determining the fault parameter value arranged later in the time sequence relationship as the second abnormal parameter value;

[0085] The first abnormal parameter value and the second abnormal parameter value are combined into an abnormal parameter value, and the remaining fault parameter values ​​are determined as non-abnormal parameter values.

[0086] In a possible embodiment, the matching processing module 104 is specifically configured to:

[0087] According to the timing relationship of the first timing evaluation information, a plurality of corresponding historical fault parameter values ​​are determined in the pre-stored historical fault parameter value combination and determined as first matching information; according to the timing relationship of the second timing evaluation information, a plurality of corresponding historical fault parameter values ​​are determined in the pre-stored historical fault parameter value combination and determined as second matching information;

[0088] Matching processing is performed on the first timing evaluation information and the second timing evaluation information based on the first matching information and the second matching information respectively.

[0089] In a possible embodiment, the matching processing module 104 is further configured to:

[0090] A first similarity between the first timing evaluation information and the first matching information and a second similarity between the second timing evaluation information and the second matching information are calculated, and a matching processing result is determined according to the first similarity and the second similarity.

[0091] In a possible embodiment, the matching processing module 104 is further configured to:

[0092] When the first similarity is greater than a first preset similarity and the second similarity is greater than a second preset similarity, it is determined that the corresponding pre-stored historical fault value combination successfully matches the first timing evaluation information and the second timing evaluation information.

[0093] In a possible embodiment, the matching processing module 104 is further configured to:

[0094] The first similarity and the second similarity are respectively multiplied with the corresponding first preset weight and second preset weight and superimposed to obtain a comprehensive similarity. When the comprehensive similarity is greater than the preset similarity, it is determined that the corresponding pre-stored historical fault value combination successfully matches the first timing evaluation information and the second timing evaluation information.

[0095] Figure 6 A schematic diagram of a cable fault cause determination device based on parameter timing relationship 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 6 In 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 method for determining the cause of a cable fault based on a parameter timing relationship in an 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, the method for determining the cause of a cable fault based on a parameter timing relationship is realized. 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.

[0096] The embodiment of the present invention further provides a storage medium containing computer executable instructions, wherein the computer executable instructions are used to execute a method for determining a cable fault cause based on a parameter timing relationship when executed by a computer processor, the method comprising:

[0097] When a cable fault is detected, a plurality of fault parameter values ​​of a preset time before the cable fault are obtained, and a plurality of abnormal parameter values ​​and a non-abnormal parameter value among the fault parameter values ​​are determined according to preset abnormal conditions;

[0098] Combining the abnormal parameter values ​​according to a timing relationship to obtain first timing evaluation information, combining the non-abnormal parameter values ​​according to a timing relationship to obtain second timing evaluation information, and performing matching processing based on the first timing evaluation information and the second timing evaluation information and a plurality of pre-stored historical fault parameter value combinations;

[0099] The historical fault cause associated with the successfully matched pre-stored historical fault value combination is determined as the fault cause of the cable.

[0100] It is worth noting that in the above-mentioned embodiment of the cable fault cause determination method system based on parameter timing relationship, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the embodiments of the present invention.

[0101] 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 method for determining the cause of a cable fault based on a parameter time sequence relationship, characterized in that: include: When a cable fault is detected, a plurality of fault parameter values ​​of a preset time before the cable fault are obtained, and a plurality of abnormal parameter values ​​and a non-abnormal parameter value among the fault parameter values ​​are determined according to preset abnormal conditions; Combining the abnormal parameter values ​​according to a timing relationship to obtain first timing evaluation information, combining the non-abnormal parameter values ​​according to a timing relationship to obtain second timing evaluation information, and performing matching processing based on the first timing evaluation information and the second timing evaluation information and a plurality of pre-stored historical fault parameter value combinations; The historical fault cause associated with the successfully matched pre-stored historical fault value combination is determined as the fault cause of the cable.

2. The method for determining the cause of a cable fault based on a parameter time series relationship according to claim 1, characterized in that: The determining of a plurality of abnormal parameter values ​​and a non-abnormal parameter value among the fault parameter values ​​according to the preset abnormal condition comprises: Each fault parameter value is compared with the corresponding preset comparison value, and the fault parameter value greater than the preset comparison value is determined as the first abnormal parameter value, and the abnormal parameter value and the non-abnormal parameter value are determined based on the first abnormal parameter value.

3. The method for determining the cause of a cable fault based on a parameter time series relationship according to claim 2, characterized in that: The determining of an abnormal parameter value and a non-abnormal parameter value based on the first abnormal parameter value includes: Calculating the difference between adjacent fault parameter values ​​other than the first abnormal parameter value in the fault parameter values, and when the difference is greater than a preset difference, determining the fault parameter value arranged later in the time sequence relationship as the second abnormal parameter value; The first abnormal parameter value and the second abnormal parameter value are combined into an abnormal parameter value, and the remaining fault parameter values ​​are determined as non-abnormal parameter values.

4. The method for determining the cause of a cable fault based on a parameter time series relationship according to any one of claims 1 to 3, characterized in that: The pre-stored historical fault parameter value combination includes each historical fault parameter value within the preset time length, and the matching processing based on the first timing evaluation information and the second timing evaluation information and multiple pre-stored historical fault parameter value combinations includes: According to the timing relationship of the first timing evaluation information, a plurality of corresponding historical fault parameter values ​​are determined in the pre-stored historical fault parameter value combination and determined as first matching information; according to the timing relationship of the second timing evaluation information, a plurality of corresponding historical fault parameter values ​​are determined in the pre-stored historical fault parameter value combination and determined as second matching information; Matching processing is performed on the first timing evaluation information and the second timing evaluation information based on the first matching information and the second matching information respectively.

5. The method for determining the cause of a cable fault based on a parameter time series relationship according to claim 4, characterized in that: The matching processing of the first timing evaluation information and the second timing evaluation information based on the first matching information and the second matching information respectively includes: A first similarity between the first timing evaluation information and the first matching information and a second similarity between the second timing evaluation information and the second matching information are calculated, and a matching processing result is determined according to the first similarity and the second similarity.

6. The method for determining the cause of a cable fault based on a parameter time series relationship according to claim 5, characterized in that: The determining a matching result according to the first similarity and the second similarity includes: When the first similarity is greater than a first preset similarity and the second similarity is greater than a second preset similarity, it is determined that the corresponding pre-stored historical fault value combination successfully matches the first timing evaluation information and the second timing evaluation information.

7. The method for determining the cause of a cable fault based on a parameter time series relationship according to claim 5, characterized in that: The determining a matching result according to the first similarity and the second similarity includes: The first similarity and the second similarity are respectively multiplied with the corresponding first preset weight and second preset weight and superimposed to obtain a comprehensive similarity. When the comprehensive similarity is greater than the preset similarity, it is determined that the corresponding pre-stored historical fault value combination successfully matches the first timing evaluation information and the second timing evaluation information.

8. A cable fault cause determination system based on parameter timing relationship, characterized in that: include: An acquisition module, used for acquiring multiple fault parameter values ​​of a preset time before the cable fault when a cable fault is detected; A numerical abnormality classification module, used for determining a plurality of abnormal parameter values ​​and a non-abnormal parameter value in the fault parameter value according to a preset abnormal condition; An evaluation information combination module, used to combine the abnormal parameter values ​​according to a time series relationship to obtain first time series evaluation information, and to combine the non-abnormal parameter values ​​according to a time series relationship to obtain second time series evaluation information; A matching processing module, configured to perform matching processing based on the first timing evaluation information and the second timing evaluation information and a plurality of pre-stored historical fault parameter value combinations; The fault cause determination module is used to determine the historical fault cause associated with the successfully matched pre-stored historical fault value combination as the fault cause of the cable.

9. A device for determining the cause of a cable fault based on a parameter time sequence relationship, 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 method for determining the cause of a cable fault based on a parameter timing relationship 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 method for determining the cause of a cable fault based on a parameter timing relationship as described in any one of claims 1 to 7 when executed by a computer processor.

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