Auxiliary detection system and method for grounding operation state of cable line

Abstract

The invention discloses an auxiliary detection system and method for the grounding operation state of a cable line, and relates to the technical field of cable detection. Cable arrangement areas are divided, and cable abnormity testing is carried out based on the soil environment of each area; further analyzing the relation between the cable abnormal state and the soil abnormal information and the gas abnormal information in each soil environment to obtain a cable abnormal operation-abnormal information association table, and monitoring the soil abnormal information and the gas abnormal information of each area based on a satellite monitoring system and a distributed gas sensor after the cable is laid; the monitoring cost is reduced, the abnormity of soil and gas can be found in time, and the cable abnormal operation-abnormal information association table is inquired based on the soil abnormal information and the gas abnormal information of each region, so that the abnormal state of the cable in each region is detected and maintained based on the inquiry result. And manpower and resource waste caused by manual detection is avoided.

Description

Technical Field

[0001] This application relates to the technical field of cable detection, and particularly to an auxiliary detection system and method for the grounding operation state of a cable line. Background Art

[0002] Due to long-term operation, underground cables may malfunction due to reasons such as insulation aging and external force damage. Existing detection methods for underground cables cannot detect abnormal cable operations in a timely manner. Conducting auxiliary detection on underground cables can detect cable abnormalities in advance, and then conduct targeted detection on the cables in a timely manner. Therefore, this application proposes an auxiliary detection system and method for the grounding operation state of a cable line.

[0003] The prior art, such as a cable maintenance auxiliary test platform disclosed in the invention patent application with the publication number CN111476380A, includes a cable test and detection unit, a multi-source status detection data analysis unit, a multi-dimensional warning threshold optimization and warning technology unit, a cable operation status evaluation method formation unit, a cable intelligent diagnosis model generation unit, a cable status maintenance auxiliary decision support system platform establishment unit, and a cable status detection auxiliary decision support system formation unit. This cable maintenance auxiliary test platform proposes a multi-source status monitoring data analysis model based on information drive to achieve the fusion, analysis, and intelligent processing of various cable data. By fusing multi-source cable data, applying modern management concepts and management technologies, and continuously updating and correcting weights in combination with the actual operation of the local power grid.

[0004] Regarding the above solution, there are the following technical problems: 1. The current technology mainly realizes the fusion, analysis, and intelligent processing of various cable data through a multi-source status monitoring data analysis model. The current technology cannot achieve real-time monitoring of the cable status, and thus cannot detect abnormal cable operations in a timely manner. Moreover, the acquisition process of each operation data of the cable in the current technology is relatively complex, and the detection cost is relatively high.

[0005] 2. The current technology's monitoring of the cable operation status is still based on the collection and processing of a large amount of data, and does not consider monitoring the abnormal phenomena caused by cable abnormalities. When a cable is abnormal, it will cause phenomena such as depression, uplift, or cracking of the surface soil. Monitoring this phenomenon can effectively detect cable operation abnormalities in a timely manner and greatly reduce the monitoring cost and difficulty. Summary of the Invention

[0006] The purpose of this application is to provide an auxiliary detection system and method for the grounding operation state of a cable line, which solves the problems existing in the background art.

[0007] To solve the above technical problems, the present application adopts the following technical solutions: In the first aspect, the present application provides an auxiliary detection system for the grounding operation state of a cable line, including: Anomaly testing module: Before laying an underground cable, it is used to divide the cable laying area into target sub-areas, and then based on the soil environment of each target sub-area, conduct anomaly testing on the cable, so as to obtain the soil information and gas information at the surface of each target sub-area when the cable operation state is abnormal.

[0008] Anomaly correlation module: It is used to analyze the relationship between the cable operation state and the surface soil information and surface gas information according to the test results of each cable test group, and then obtain the cable abnormal operation - abnormal information correlation table.

[0009] Auxiliary detection module: It is used to monitor the surface soil information and gas information of each target sub-area. When the surface soil information and gas information of each target sub-area are abnormal, query the predicted abnormal states of the cables in each target sub-area according to the cable abnormal operation - abnormal information correlation table.

[0010] Anomaly confirmation module: It is used to check each predicted abnormal state of the cables in each sub-area one by one, so as to confirm the cable abnormal states of each target sub-area.

[0011] In the second aspect, the present application provides an auxiliary detection method for the grounding operation state of a cable line, including: Step 1, Anomaly testing: Before laying an underground cable, it is used to divide the cable laying area into target sub-areas, and then based on the soil environment of each target sub-area, conduct anomaly testing on the cable, so as to obtain the soil information and gas information at the surface of each target sub-area when the cable operation state is abnormal.

[0012] Step 2, Anomaly correlation: It is used to analyze the relationship between the cable operation state and the surface soil information and surface gas information according to the test results of each cable test group, and then obtain the cable abnormal operation - abnormal information correlation table.

[0013] Step 3: Auxiliary detection: It is used to monitor the surface soil information and gas information of each target sub-area. When the surface soil information and gas information of each target sub-area are abnormal, query the predicted abnormal states of the cables in each target sub-area according to the cable abnormal operation - abnormal information correlation table.

[0014] Step 4, Anomaly confirmation: It is used to check each predicted abnormal state of the cables in each sub-area one by one, so as to confirm the cable abnormal states of each target sub-area.

[0015] The beneficial effects of this application are as follows: 1. This application divides the cable laying area, conducts cable anomaly tests based on the soil environment of each area, and then analyzes the relationship between the cable anomaly state and soil anomaly information and gas anomaly information in each soil environment to obtain a cable abnormal operation - anomaly information association table. After the cable is laid, the satellite monitoring system and distributed gas sensors are used to monitor the soil anomaly information and gas anomaly information of each area, reducing the monitoring cost while being able to detect soil and gas anomalies in a timely manner. The cable abnormal operation - anomaly information association table is queried based on the soil anomaly information and gas anomaly information of each area, so as to detect and repair the cable anomaly state of each area based on the query results, avoiding the waste of manpower and resources caused by manual detection.

[0016] 2. This application conducts anomaly tests on the cable based on the cable laying environment, and then obtains the corresponding surface soil anomaly information and gas anomaly information when the cable operation state is abnormal. Furthermore, the relationship between the cable operation state anomaly and surface soil anomaly and gas anomaly is analyzed, laying a foundation for the subsequent auxiliary detection of the cable operation state.

[0017] 3. This application realizes the real-time monitoring of the soil anomaly information and gas anomaly information of each area where the cable is located through the satellite monitoring system and the installed gas sensors. The monitoring cost is low and the monitoring process is simple, and at the same time, it can detect the possible operation faults of the cable in a timely manner, so as to further detect and repair the cable operation anomalies, avoiding serious accidents or economic losses caused by the further deterioration of the faults. At the same time, according to the spatial distribution characteristics of soil anomalies and gas anomalies, the approximate location of the abnormal cable can be confirmed, thereby reducing the detection range of the abnormal cable, greatly improving the efficiency of troubleshooting, and according to the soil anomaly information and gas anomaly information, the abnormal type of the cable can be roughly determined, avoiding the waste of time and resources caused by the detection of various types of cables, and also providing a basis for the detection and repair plan of the staff. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the system structure connection of this application.

[0020] Figure 2 It is a schematic diagram of the implementation steps flow of the method of this application. Detailed Embodiments

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0022] Referring to Figure 1 As shown, the present application provides an auxiliary detection system for the grounding operation state of a cable line in the first aspect, including the following modules: an abnormal test module: used to divide the cable laying area into target sub-areas before laying an underground cable, and then perform an abnormal test on the cable based on the soil environment of each target sub-area, so as to obtain the soil information and gas information at the surface of each target sub-area when the cable operation state is abnormal.

[0023] In a specific example, the soil abnormal information represents the abnormal phenomena caused by the abnormal cable operation state; the gas abnormal information represents the types of abnormal gases generated due to the abnormal cable operation state and penetrating to the surface through the soil.

[0024] It should be noted that the soil abnormal information includes soil uplift, subsidence, showing a charred black color, and generating fog, etc.; the abnormal gases include ammonia nitrides, ozone, sulfides, hydrogen, nitric oxide, nitrogen dioxide, and alkane gases, where sulfides include hydrogen sulfide and sulfur dioxide, etc.; alkane gases include methane and ethane, etc.; ammonia nitrides include ammonia and nitrogen, etc.

[0025] In a specific example, the process of dividing the cable laying area into target sub-areas is as follows: obtain the laying trajectory of the cable from the cable construction drawing, and then obtain the soil types of the cable laying area. Divide the cable laying area into sub-areas according to a preset distance. Collect soil samples of each sub-area in a certain sub-area according to a preset sub-distance. After mixing the soil samples of the sub-area, use a soil resistance moisture meter to measure the moisture of the soil samples in the sub-area. Compare the moisture of the soil samples in the sub-area with the set soil moisture threshold. If the moisture of the soil samples in the sub-area is less than the set soil moisture threshold, then mark the sub-area as a soil-dry sub-area, otherwise mark the sub-area as a soil-wet sub-area, and thus obtain each soil-wet sub-area and each soil-dry sub-area.

[0026] At the same time, the static air chamber method is used to measure the soil gas permeability of soil samples in a certain sub-region, and the soil gas permeability of the soil samples in this sub-region is compared with the set soil gas permeability threshold. If the soil gas permeability of the soil samples in this sub-region is less than the set soil gas permeability threshold, this sub-region is recorded as a soil airtight sub-region; otherwise, this sub-region is recorded as a soil breathable sub-region. Based on this, each soil breathable group region and each soil airtight sub-region are obtained.

[0027] By combining each soil moist sub-region, each soil dry sub-region, each soil breathable group region and each soil airtight sub-region, each soil moist and breathable sub-region, each soil moist and airtight sub-region, each soil dry and breathable sub-region and each soil dry and airtight sub-region are obtained, and are comprehensively recorded as each target sub-region.

[0028] It should be noted that both the preset distance and the preset sub-distance are set by relevant staff members themselves and are not specifically limited here. Among them, the preset sub-distance cannot exceed the preset distance.

[0029] It should be noted that the static air chamber method is an existing technology, so it will not be elaborated here.

[0030] It should be noted that the soil moisture threshold is the global average soil humidity threshold, which is 0.19 m 3 / m 3 , and the soil gas permeability threshold is the global average soil gas permeability threshold, which is 10% of the oxygen content in the soil.

[0031] In a specific example, the cable is abnormally tested based on the soil environment of each target sub-region, so as to obtain the soil information and gas information on the ground surface of each target sub-region when the cable operation state is abnormal. The specific process is as follows: S1. Set the corresponding test soil in the laboratory according to the soil environment of each target sub-region.

[0032] S2. Set each cable test group based on the laying depth of the cable, and record each test group as T ijn , where i is the number of each test group, i = 1, 2, 3, and the numbers 1, 2, and 3 respectively represent that the cable laying depths are 1 m, 1.5 m, and 2 m; j is the number of each target sub-region, j = 1, 2, 3, 4, and the numbers 1, 2, 3, and 4 respectively represent each soil moist and breathable sub-region, each soil moist and airtight sub-region, each soil dry and breathable sub-region, and each soil dry and airtight sub-region; n is the number of the cable operation state abnormal type, n = 1, 2, 3, 4, and the numbers 1, 2, 3, and 4 respectively represent partial discharge, short circuit, and overload. After setting, lay the cable into the laboratory test soil corresponding to each target sub-region.

[0033] S3. Conduct cable operation status anomaly - surface information anomaly correlation tests and cable operation anomaly - gas information anomaly correlation tests on each cable test group, record the test results, and end the test after the recording is completed.

[0034] In a specific example, each cable test group conducts cable operation status anomaly - surface information anomaly correlation tests and cable operation anomaly - gas information anomaly correlation tests. The specific test process is as follows: After performing anomaly control on each cable of each cable test group, lay them in the test soils at various depths. Use monitoring equipment to take surface images of each cable test group and use infrared equipment to obtain the surface temperatures of each cable test group, thereby obtaining the soil anomaly information of each cable test group corresponding to each test soil. At the same time, gas sensors are arranged at the surfaces of the test soils in the laboratories corresponding to each target sub - region to monitor the gas information at the surfaces of the test soils in real - time, thereby obtaining the abnormal gas information at the surfaces of the test soils corresponding to each cable test group. Based on this, conduct cable operation status anomaly - surface anomaly correlation tests and cable operation anomaly - surface abnormal gas correlation tests on each test group.

[0035] It should be noted that in order to avoid mutual interference of soil anomaly information and gas anomaly information between each cable test group, separate tests are conducted on each cable test group. For example, after the test of the cable test group with a cable laying depth of 1 meter is completed, the test of the cable test group with a cable laying depth of 2 meters is then carried out.

[0036] Anomaly correlation module: Used to analyze the relationship between the cable operation status and the surface soil information and surface gas information based on the test results of each cable test group, and then obtain a cable abnormal operation - abnormal information correlation table.

[0037] In a specific example, the process of analyzing the relationship between the cable operation status and the surface soil information and surface gas information based on the test results of each cable test group, and then obtaining a cable abnormal operation - abnormal information correlation table is as follows.

[0038] Obtain the surface soil anomaly information corresponding to each abnormal operation status of the cable based on the test results of the cable operation status anomaly - surface information anomaly correlation test.

[0039] It should be noted that the surface soil anomaly information includes soil cracking, depression, uplift, and the appearance of bubbles, etc.

[0040] Obtain the surface gas anomaly information corresponding to each abnormal operation status of the cable based on the test results of the cable operation anomaly - surface abnormal gas correlation test.

[0041] It should be noted that the gas anomaly information includes the appearance of sulfur dioxide, ammonia nitrogen compounds, and hydrogen, etc. at the surface.

[0042] Based on the surface anomaly information corresponding to each abnormal operating state of the cable and the surface gas anomaly information corresponding to each abnormal operating state of the cable, a cable abnormal operation - anomaly information association table is comprehensively constructed.

[0043] It should be noted that the cable abnormal operation - anomaly information association table is as follows:

[0044]

[0045]

[0046]

[0047]

[0048]

[0049]

[0050] Auxiliary detection module: used to monitor the surface soil information and gas information of each target sub - region. When the surface soil information and gas information of each target sub - region show anomalies, query the predicted abnormal states of the cables in each target sub - region according to the cable abnormal operation - anomaly information association table.

[0051] In a specific example, the monitoring of the surface phenomena and surface gases in each target sub - region is as follows: Connect the satellite monitoring system to the cable maintenance terminal, and then monitor the surface images of each target sub - region through the satellite monitoring system.

[0052] Distributed gas sensors are arranged in each target sub - region, and then a wireless sensor network is constructed, and the gas information collected by each gas sensor is transmitted to the cable maintenance terminal through wireless communication technology.

[0053] In a specific example, the process of querying the predicted abnormal states of the cables in each target sub - region according to the cable abnormal operation - anomaly information association table is as follows: The cable maintenance terminal performs anomaly recognition on the surface images of each target sub - region received. When it is recognized that the soil in a certain target sub - region shows an anomaly, extract the soil anomaly information in that target sub - region, and comprehensively record the soil anomaly information and gas anomaly information of that target sub - region as the anomaly information of that target sub - region. Query the cable abnormal operation - anomaly information association table based on the anomaly information of that target sub - region, and then obtain the predicted abnormal states of the cables in that target sub - region. Obtain the predicted abnormal states of the cables in each target sub - region in this way.

[0054] It should be noted that multiple cable abnormal state results may be found in the cable abnormal operation - abnormal information association table for the abnormal information of a certain target sub - region. For example, when the soil in a dry and air - tight sub - region cracks and ozone, nitric oxide, and nitrogen dioxide gases are generated, then cable partial discharge and cable overload are recorded as the expected abnormal states of the cables in this dry and air - tight sub - region.

[0055] Abnormality confirmation module: used to check each expected abnormal state of the cables in each sub - region one by one, so as to confirm the abnormal states of the cables in each target sub - region.

[0056] In a specific example, the process of checking each expected abnormal state of the cables in each sub - region one by one to confirm the abnormal states of the cables in each target sub - region is as follows: If there is only one expected abnormal state in a certain target sub - region after querying, based on the abnormal state of this target sub - region, relevant staff are dispatched to this target sub - region to confirm the abnormal state of its underground cables, and then the underground cables in this target sub - region are repaired.

[0057] If there are multiple expected abnormal states in a certain target sub - region after querying, based on the types of each expected abnormal state of this target sub - region, relevant staff are dispatched to this abnormal sub - region to conduct corresponding detections on each expected abnormal state, and then the abnormal state of the cables in this target sub - region is determined, so as to dispatch relevant staff to repair the underground cables in this target sub - region.

[0058] Refer to Figure 2 As shown, in the second aspect of the present application, an auxiliary detection method for the grounding operation state of a cable line is provided, including the following steps: Step 1, Abnormality testing: used to divide the cable laying area before laying underground cables to obtain each target sub - region, and then based on the soil environment of each target sub - region, conduct abnormality testing on the cables, so as to obtain the soil information and gas information on the surface of each target sub - region when the cable operation state is abnormal.

[0059] Step 2, Abnormality association: used to analyze the relationship between the cable operation state and the surface soil information and surface gas information according to the test results of each cable test group, and then obtain the cable abnormal operation - abnormal information association table.

[0060] Step 3: Auxiliary detection: used to monitor the surface soil information and gas information of each target sub - region. When the surface soil information and gas information of each target sub - region are abnormal, query each expected abnormal state of the cables in each target sub - region according to the cable abnormal operation - abnormal information association table.

[0061] Step 4, Abnormality confirmation: used to check each expected abnormal state of the cables in each sub - region one by one, so as to confirm the abnormal states of the cables in each target sub - region.

[0062] By dividing the cable laying area and conducting cable anomaly tests based on the soil environment of each area, and then analyzing the relationship between the cable anomaly state, soil anomaly information, and gas anomaly information in each soil environment, a cable abnormal operation - anomaly information association table is obtained. After the cable laying is completed, the soil anomaly information and gas anomaly information of each area are monitored based on the satellite monitoring system and distributed gas sensors, reducing the monitoring cost while being able to promptly detect soil and gas anomalies. The cable abnormal operation - anomaly information association table is queried based on the soil anomaly information and gas anomaly information of each area, so as to detect and repair the cable anomaly state of each area based on the query results, avoiding the waste of manpower and resources caused by manual detection.

[0063] The above content is only an example and illustration of the concept of this application. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as they do not deviate from the concept of the invention or exceed the scope defined by this application, they should fall within the protection scope of this application.

Claims

1. An auxiliary detection system for the grounding operation state of a cable line, characterized in that, Including: Abnormal test module: Before laying underground cables, it is used to divide the cable laying area into target sub-areas, and then conduct abnormal tests on the cables based on the soil environment of each target sub-area, so as to obtain the soil information and gas information on the surface of each target sub-area when the cable operation state is abnormal; Abnormal correlation module: It is used to analyze the relationship between the cable operation state and the surface soil information and surface gas information according to the test results of each cable test group, and then obtain the cable abnormal operation-abnormal information correlation table; Auxiliary detection module: It is used to monitor the surface soil information and gas information of each target sub-area. When the surface soil information and gas information of each target sub-area are abnormal, query the predicted abnormal states of the cables in each target sub-area according to the cable abnormal operation-abnormal information correlation table; Abnormal confirmation module: It is used to check each predicted abnormal state of the cables in each sub-area one by one, so as to confirm the cable abnormal states of each target sub-area.

2. The auxiliary detection system for the grounding operation state of a cable line according to claim 1, characterized in that The soil abnormal information is expressed as the abnormal phenomenon caused by the abnormal cable operation state; the gas abnormal information is expressed as the type of abnormal gas generated due to the abnormal cable operation state and penetrating to the surface through the soil.

3. The auxiliary detection system for the grounding operation state of a cable line according to claim 1, characterized in that, The process of dividing the cable laying area into target sub-areas is as follows: Obtain the laying trajectory of the cable from the cable construction drawing, and then obtain the soil types of the cable laying area. Divide the cable laying area into sub-areas according to a preset distance. In a certain sub-area, collect soil samples of the sub-area according to a preset sub-distance. After mixing the soil samples of the sub-area, use a soil resistance moisture meter to measure the moisture of the soil samples in the sub-area. Compare the moisture of the soil samples in the sub-area with the set soil moisture threshold. If the moisture of the soil samples in the sub-area is less than the set soil moisture threshold, mark the sub-area as a soil-dry sub-area; otherwise, mark the sub-area as a soil-wet sub-area. Based on this, obtain each soil-wet sub-area and each soil-dry sub-area; At the same time, use the static chamber method to measure the soil gas permeability of the soil samples in a certain sub-area, and compare the soil gas permeability of the soil samples in the sub-area with the set soil gas permeability threshold. If the soil gas permeability of the soil samples in the sub-area is less than the set soil gas permeability threshold, mark the sub-area as a soil-impermeable sub-area; otherwise, mark the sub-area as a soil-permeable sub-area. Based on this, obtain each soil-permeable sub-area group and each soil-impermeable sub-area; Integrate each soil-wet sub-area, each soil-dry sub-area, each soil-permeable sub-area group and each soil-impermeable sub-area to obtain each soil-wet and permeable sub-area, each soil-wet and impermeable sub-area, each soil-dry and permeable sub-area, and each soil-dry and impermeable sub-area, which are comprehensively recorded as each target sub-area.

4. An auxiliary detection system for the grounding operation state of a cable line according to claim 2, characterized in that, The process of conducting abnormal tests on the cables based on the soil environment of each target sub-area to obtain the soil information and gas information on the surface of each target sub-area when the cable operation state is abnormal is as follows: S1. Set corresponding test soils in the laboratory according to the soil environment of each target sub-area; S2. Set up each cable test group based on the laying depth of the cables, and denote each test group as T ijn , where i is the number of each test group, i = 1, 2, 3, and the numbers 1, 2, and 3 represent that the laying depths of the cables are 1 m, 1.5 m, and 2 m respectively; j is the number of each target sub-region, j = 1, 2, 3, 4, and the numbers 1, 2, 3, and 4 represent each sub-region with moist and breathable soil, each sub-region with moist and non-breathable soil, each sub-region with dry and breathable soil, and each sub-region with dry and non-breathable soil respectively; n is the number of the abnormal types of the cable operation status, n = 1, 2, 3, 4, and the numbers 1, 2, 3, and 4 represent partial discharge, short circuit, overload, and moisture absorption of the cable respectively. After the setting is completed, lay the cables into the laboratory test soils corresponding to each target sub-region; S3. Conduct the correlation tests of abnormal cable operation - abnormal surface information and abnormal cable operation - abnormal gas information for each cable test group, record the test results, and end the test after the recording is completed.

5. The auxiliary detection system for the grounding operation state of a cable line according to claim 4, wherein The specific test process for each cable test group to conduct the correlation tests of abnormal cable operation - abnormal surface information and abnormal cable operation - abnormal gas information is as follows: After abnormal control of each cable in each cable test group, lay them in the test soils at each depth. Use monitoring equipment to take surface images of each cable test group and use infrared equipment to obtain the surface temperatures of each cable test group, so as to obtain the soil abnormal information of each cable test group corresponding to each test soil. At the same time, arrange gas sensors at the surfaces of the test soils in the laboratories corresponding to each target sub - region, and then monitor the gas information at the surfaces of the test soils in real time, so as to obtain the abnormal gas information at the surfaces of the test soils corresponding to each cable test group. Based on this, conduct the correlation tests of abnormal cable operation - surface abnormality and abnormal cable operation - surface abnormal gas for each test group.

6. The auxiliary detection system for the grounding operation state of a cable line according to claim 5, characterized in that, Analyze the relationship between the cable operation state and the surface soil information and surface gas information according to the test results of each cable test group, and then obtain the cable abnormal operation - abnormal information correlation table. The specific process is as follows: Obtain the surface abnormal information corresponding to each abnormal operation state of the cable based on the test results of the correlation test of abnormal cable operation - abnormal surface information. Obtain the surface gas abnormal information corresponding to each abnormal operation state of the cable based on the test results of the correlation test of abnormal cable operation - surface abnormal gas. Comprehensively construct the cable abnormal operation - abnormal information correlation table based on the surface abnormal information corresponding to each abnormal operation state of the cable and the surface gas abnormal information corresponding to each abnormal operation state of the cable.

7. The auxiliary detection system for the grounding operation state of a cable line according to claim 6, wherein The specific monitoring process for the surface phenomena and surface gases in each target sub - region is as follows: Connect the satellite monitoring system to the cable maintenance terminal, and then monitor the surface images of each target sub - region through the satellite monitoring system. Arrange distributed gas sensors in each target sub - region, then construct a wireless sensor network, and transmit the gas information collected by each gas sensor to the cable maintenance terminal through wireless communication technology.

8. An auxiliary detection system and method for the grounding operation state of a cable line, according to claim 7, characterized in that The specific process for querying the predicted abnormal states of the cables in each target sub - region according to the cable abnormal operation - abnormal information correlation table is as follows: The cable maintenance terminal performs abnormal recognition after processing the received surface images of each target sub - region. When it is recognized that the soil in a certain target sub - region is abnormal, extract the soil abnormal information in this target sub - region, and comprehensively record the soil abnormal information and gas abnormal information in this target sub - region as the abnormal information of this target sub - region. Query the cable abnormal operation - abnormal information correlation table based on the abnormal information of this target sub - region, and then obtain the predicted abnormal states of the cable in this target sub - region. Obtain the predicted abnormal states of each target sub - region in this way.

9. The auxiliary detection system for the grounding operation state of a cable line according to claim 8, characterized in that, Check each predicted abnormal state of the cables in each sub - region one by one to confirm the abnormal states of the cables in each target sub - region. The specific process is as follows: If there is only one predicted abnormal state in a target sub-region after querying, based on the abnormal state of the target sub-region, relevant staff are dispatched to the target sub-region to confirm the abnormal state of its underground cable, and then the underground cable of the target sub-region is repaired; If there are multiple predicted abnormal states in a target sub-region after querying, based on the types of each predicted abnormal state of the target sub-region, relevant staff are dispatched to the abnormal sub-region to conduct corresponding detections on each predicted abnormal state, and then the abnormal state of the cable in the target sub-region is determined, so as to dispatch relevant staff to repair the underground cable of the target sub-region.

10. An auxiliary detection system for the grounding operation state of a cable line, which executes the auxiliary detection method for the grounding operation state of the cable line according to any one of claims 1-9, characterized in that, Including: Step 1, Abnormal test: Before laying the underground cable, the cable laying area is divided to obtain each target sub-region, and then the cable is subjected to an abnormal test based on the soil environment of each target sub-region, so as to obtain the soil information and gas information on the surface of each target sub-region when the cable is operating abnormally; Step 2, Abnormal association: Used to analyze the relationship between the cable operation state and the surface soil information and surface gas information according to the test results of each cable test group, and then obtain the cable abnormal operation - abnormal information association table; Step 3: Auxiliary detection: Used to monitor the surface soil information and gas information of each target sub-region. When the surface soil information and gas information of each target sub-region are abnormal, query each predicted abnormal state of the cable in each target sub-region according to the cable abnormal operation - abnormal information association table; Step 4, Abnormal confirmation: Used to check each predicted abnormal state of the cable in each sub-region one by one, so as to confirm the abnormal state of the cable in each target sub-region.

Images