A cable data online acquisition system and method

Abstract

The present invention relates to the technical field of power cables, and in particular to an online cable data acquisition system and method, the system comprising: a data acquisition module, used for respectively acquiring operating parameters of cables in different intervals in different operating cycles; a data processing module, used for receiving operating parameters of cables in different intervals in different operating cycles, and calculating average voltage and average operating temperature according to cable intervals and operating cycles; a database, used for storing average voltage, average operating temperature and sheath thickness of damaged cable parts; an evaluation module, used for determining cable operating conditions; an analysis module, used for determining specific causes of abnormal cable operation according to secondary operating scores; a correction module, used for determining replacement of cable parameter standards according to secondary operating scores and adjusting the power supply of a power supply end according to primary operating scores; the present invention effectively improves the accuracy of fault identification by determining the condition of a bus according to the operating conditions of cables in a single interval.

Description

Technical Field

[0001] The present invention relates to the technical field of power cables, and in particular to an online cable data acquisition system and method. Background Art

[0002] At present, a large number of power lines are laid by cables. Due to the different construction years, construction entities and construction standards, there is a certain lack of basic information on the structure, form, inspection wells and internal cable resource usage of cable channels, which restricts daily inspection and maintenance work.

[0003] Traditional cable data collection still uses paper forms for on-site collection, which are filled out manually on-site, handed over to office personnel for computer processing, and then stored. The entire process lacks modern management and control tools, resulting in frequent human errors, and the accuracy, completeness, and real-time nature of the data cannot be guaranteed. It increases the repetitive work of operators, seriously affects work efficiency, and cannot effectively guarantee the collection results.

[0004] Chinese Patent Publication No.: CN109257661A discloses an underground cable data acquisition system and acquisition method, including a management system, a mobile acquisition terminal and an electronic tag; the management system is used to build various cable devices into a basic data platform, establish the association between the acquisition task and the equipment to be collected, and verify the acquisition data submitted by the mobile acquisition terminal to achieve the output of the results; the mobile acquisition terminal is used to receive the acquisition task, automatically plan the best working route according to the acquisition range, and generate corresponding acquisition data according to the acquisition object.

[0005] The prior art has the problem of reduced accuracy in cable fault identification due to the inability to determine the operating status of the cable bus based on the operating status of the cable in a single section. Summary of the invention

[0006] To this end, the present invention provides a cable data online acquisition system and method to overcome the problem in the prior art that the accuracy of cable fault identification is reduced due to the inability to determine the operating status of the cable bus based on the operating status of a single cable section.

[0007] In one aspect, the present invention provides a cable data online acquisition system, comprising:

[0008] A data acquisition module is used to collect operating parameters of cables in different sections in different operating cycles, wherein the operating parameters include several voltage measurement values ​​and several operating temperatures of a single section cable in a single operating cycle;

[0009] A data processing module, which is connected to the data acquisition module, is used to receive the operating parameters of the cables in different sections in different operating cycles, and calculate the average voltage and average operating temperature according to the cable sections and operating cycles;

[0010] A database, connected to the data processing module, for storing the average voltage and the average operating temperature output by the data processing module and the sheath thickness of the damaged part of the cable collected by the data collection module;

[0011] An evaluation module, which is connected to the data processing module and the database, respectively, and is used to determine a secondary operation score for a single section cable in a single operation cycle according to the average voltage and the average operation temperature output by the data processing module;

[0012] An analysis module connected to the evaluation module is used to determine whether the operation of a single section cable in a single operation cycle is abnormal according to the secondary operation score, and to determine the cause of the abnormal operation of the section cable according to the average operating temperature and average voltage of the single section cable in a single operation cycle, and to determine the primary operation score according to the number of secondary abnormal cables and the total number of cables, and to determine whether the environment of the area where the cable is located meets the requirements according to the primary operation score;

[0013] A correction module is connected to the analysis module, and is used to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage according to the average operating temperature of the cable in the corresponding period when it is determined that the cable conductivity is lower than the allowable range, and to adjust the power supply power of the power supply end connected to the cable bus input end to the corresponding value according to the difference between the first-level operation score and the first-level preset standard score, and to adjust the joint tightening force of the replacement cable to the corresponding joint tightening force according to the difference between the average voltage of the cable in the corresponding period and the preset standard average voltage when it is determined that the cable joint strength does not meet the standard.

[0014] Furthermore, the analysis module determines whether the operation of a single section cable in a single operation cycle is abnormal according to the secondary operation score R2.

[0015] The calculation formula of R2 is:

[0016]

[0017] Among them, U 0 is the preset standard average voltage, T 0 is the preset standard average operating temperature, U is the average voltage and T is the average operating temperature;

[0018] The first condition determination method is that the analysis module determines that the section cable operates normally in the operation cycle; the first condition determination method satisfies that the secondary operation score of the section cable in the operation cycle is greater than or equal to the secondary preset standard score;

[0019] The second condition determination method is that the analysis module determines that the section cable operates abnormally in the operation cycle; the second condition determination method satisfies that the secondary operation score of the section cable in the operation cycle is less than the secondary preset standard score.

[0020] Furthermore, the analysis module determines the determination method of the cause of abnormal operation of the section cable in a single operation cycle according to the average operation temperature and average voltage of the section cable in the single operation cycle, wherein:

[0021] The first cause determination method is that the analysis module determines that the sheath of the cable in the section is damaged, marks the cable as a first-level abnormal cable, and rates the sheath damage according to the actual thickness of the sheath at the damaged part of the cable; the first cause determination method satisfies that the average operating temperature is greater than the preset standard average operating temperature and the average voltage is less than the preset standard average voltage;

[0022] The second cause determination method is that the analysis module determines that the conductivity of the cable in the section is lower than the allowable range, marks the cable as a first-level abnormal cable, and adjusts the standard copper usage of the replacement cable to the corresponding standard copper usage according to the difference between the average operating temperature of the cable in several corresponding operating cycles and the preset standard average operating temperature; the second cause determination method satisfies that the average operating temperature is less than the preset standard average operating temperature and the average voltage is greater than or equal to the preset standard average voltage;

[0023] The third cause determination method is that the analysis module determines that the cable joint strength does not meet the standard, marks the cable as a first-level abnormal cable, and adjusts the joint tightening force of the replacement cable to the corresponding joint tightening force according to the difference between the average voltage of the cable in several corresponding operation cycles and the preset standard average voltage; the third cause determination method satisfies that the average operating temperature is greater than or equal to the preset standard average operating temperature and the average voltage is greater than the preset standard average voltage;

[0024] The fourth cause determination method is that the analysis module determines that the environment of the area where the cable is located does not meet the requirements, marks the cable as a secondary abnormal cable, and makes a secondary determination on whether the environment of the area where the cable is located meets the requirements based on the primary operation score; the fourth cause determination method satisfies that the average operating temperature is less than or equal to the preset standard average operating temperature and the average voltage is less than the preset standard average voltage.

[0025] Furthermore, the evaluation module determines a rating method for the sheath damage level according to the actual sheath thickness of the cable damage part in a single interval collected by the data collection module, wherein:

[0026] The first damage level rating method is that the evaluation module determines that the sheath damage level of the cable in the section is level one; the first damage level rating method satisfies that the actual thickness of the sheath is less than or equal to the first preset thickness;

[0027] The second damage level rating method is that the evaluation module determines that the sheath damage level of the cable in the section is level 2; the second damage level rating method satisfies that the actual sheath thickness is greater than the first preset thickness and the actual sheath thickness is less than or equal to the second preset thickness;

[0028] The third damage level rating method is that the evaluation module determines that the sheath damage level of the cable in the section is level three; the third damage level rating method satisfies that the actual thickness of the sheath is greater than the second preset thickness;

[0029] Wherein, the first preset thickness is smaller than the second preset thickness.

[0030] Furthermore, the correction module determines the adjustment method for the sheath thickness standard of the replacement cable according to the cable sheath damage level in a single interval, wherein:

[0031] The first thickness adjustment method is that the correction module uses the first preset thickness adjustment coefficient to adjust the jacket thickness standard of the replacement cable to a corresponding value; the first thickness adjustment method satisfies the evaluation module to determine that the cable jacket damage level is level one;

[0032] The second thickness adjustment method is that the correction module uses the second preset thickness adjustment coefficient to adjust the jacket thickness standard of the replacement cable to a corresponding value; the second thickness adjustment method satisfies the evaluation module to determine that the cable jacket damage level is level 2;

[0033] A third thickness adjustment method is that the correction module uses a third preset thickness adjustment coefficient to adjust the sheath thickness standard of the replacement cable to a corresponding value; the third thickness adjustment method satisfies the evaluation module to determine that the cable sheath damage level is level three.

[0034] Furthermore, the correction module determines the adjustment method for the standard copper usage of the replacement cable according to the difference between the average operating temperature of the cable in a number of corresponding operating cycles and the preset standard average operating temperature under the first preset condition, wherein:

[0035] The first usage adjustment method is that the correction module uses a first preset usage adjustment coefficient to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage; the first usage adjustment method satisfies that the difference between the average operating temperature and the preset standard average operating temperature is less than or equal to the first preset average temperature difference;

[0036] The second usage adjustment method is that the correction module uses the second preset usage adjustment coefficient to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage; the second usage adjustment method satisfies that the difference between the average operating temperature and the preset standard average operating temperature is greater than the first preset average temperature difference and the difference between the average operating temperature and the preset standard average operating temperature is less than or equal to the second preset average temperature difference;

[0037] The third usage adjustment method is that the correction module uses a third preset usage adjustment coefficient to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage; the third usage adjustment method satisfies that the difference between the average operating temperature and the preset standard average operating temperature is greater than the second preset average temperature difference;

[0038] The first preset condition is that the analysis module determines that the electrical conductivity of the cable is lower than an allowable range.

[0039] Furthermore, the correction module determines the adjustment method for the joint tightening force of the replacement cable according to the difference between the average voltage of the cable in several corresponding operation cycles and the preset standard average voltage under the second preset condition, wherein:

[0040] The first tightening force adjustment method is that the correction module uses a first preset tightening force adjustment coefficient to adjust the joint tightening force of the replacement cable to a corresponding value; the first tightening force adjustment method satisfies that the difference between the average voltage and the preset standard average voltage is less than or equal to the first preset average voltage difference;

[0041] The second tightening force adjustment method is that the correction module uses the second preset tightening force adjustment coefficient to adjust the joint tightening force of the replacement cable to a corresponding value; the second tightening force adjustment method satisfies that the difference between the average voltage and the preset standard average voltage is greater than the first preset average voltage difference and the difference between the average voltage and the preset standard average voltage is less than or equal to the second preset average voltage difference;

[0042] The third tightening force adjustment method is that the correction module uses a third preset tightening force adjustment coefficient to adjust the joint tightening force of the replacement cable to a corresponding value; the third tightening force adjustment method satisfies that the difference between the average voltage and the preset standard average voltage is greater than the second preset average voltage difference;

[0043] The second preset condition is that the analysis module determines that the cable joint strength does not meet the standard.

[0044] Furthermore, after the analysis module completes the marking of each of the cables, it counts the number of secondary abnormal cables, calculates the ratio of the number of secondary abnormal cables to the total number of cables to determine the primary operation score R1, and sets Among them, Na is the number of cables in normal operation, Nb is the number of first-level abnormal cables, and Nc is the number of second-level abnormal cables. The secondary judgment method is to determine whether the environment of the cable area meets the requirements based on the first-level operation score. Among them,

[0045] The first environment secondary determination method is that the analysis module secondary determines that the environment of the area where the cable is located does not meet the requirements, and adjusts the power supply power of the power supply end connected to the cable bus input end to the corresponding value according to the difference between the first-level operation score and the first-level preset standard score; the first environment secondary determination method satisfies that the first-level operation score is greater than or equal to the first-level preset standard score;

[0046] The second environment secondary determination method is that the analysis module secondary determines that the environment of the area where the cable is located meets the requirements; the second environment secondary determination method satisfies that the first-level operation score is less than the first-level preset standard score.

[0047] Furthermore, the correction module determines the adjustment method for the power supply power of the power supply end according to the difference between the first-level operation score and the first-level preset standard score under the third preset condition, wherein:

[0048] The first power adjustment mode is that the correction module uses the first power adjustment coefficient to adjust the power supply power of the power supply end to the first power supply power; the first power adjustment mode satisfies that the difference between the first-level operation score and the first-level preset standard score is less than or equal to the first preset score difference;

[0049] The second power adjustment mode is that the correction module uses the second power adjustment coefficient to adjust the power supply power of the power supply end to the second power supply power; the second power adjustment mode satisfies that the difference between the first-level operation score and the first-level preset standard score is greater than the first preset score difference and the difference between the first-level operation score and the first-level preset standard score is less than or equal to the second preset score difference;

[0050] The third power adjustment mode is that the correction module uses the third power adjustment coefficient to adjust the power supply power of the power supply end to the third power supply power; the third power adjustment mode satisfies that the difference between the first-level operation score and the first-level preset standard score is greater than the second preset score difference;

[0051] Wherein, the first preset score difference is less than the second preset score difference;

[0052] The third preset condition is that the analysis module determines for the second time that the environment of the area where the cable is located does not meet the requirements.

[0053] On the other hand, the present invention provides a cable data online acquisition method, comprising:

[0054] Step S1, the data acquisition module periodically collects the operating parameters of the cable in different intervals, and sends each operating parameter to the data processing module; the operating parameters include a number of voltage measurement values ​​and a number of operating temperatures of the cable in a single interval in a single operating cycle;

[0055] Step S2, the data processing module receives the operating parameters collected by the data processing module, and calculates the average voltage and average operating temperature according to the cable interval and operating cycle;

[0056] Step S3, the data processing module transmits the calculated average voltage and the average operating temperature to a database;

[0057] Step S4, the evaluation module determines the operating condition of the section cable in the corresponding operating cycle based on the average voltage and the average operating temperature of the single section cable in several corresponding operating cycles output by the data processing module.

[0058] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention calculates the secondary operation score of the cable in a single interval during the operation cycle through the average voltage and average operating temperature of the cable in the interval, determines the operating status of the cable in the interval during the cycle according to the secondary operation score, and further determines the cause in the case of abnormal operation, effectively ensuring that each interval can be accurately identified during the data collection process; at the same time, after completing the cable collection of different intervals, the present invention determines the primary operation score according to the ratio of the number of secondary abnormal cables to the total number of cables, thereby determining whether the environment of the area where the cable is located meets the requirements. The present invention adopts different correction methods for cable operation abnormalities caused by different reasons, which has guiding significance for the maintenance and replacement of cables, and further improves the accuracy of the system of the present invention in identifying cable faults.

[0059] Furthermore, the present invention determines the operating status of the cable in a single interval based on the average voltage and average operating temperature of the cable, accurately determines the location of the fault by determining the operating status of the cable, and facilitates the maintenance and repair of the cable by accurately locating the fault point.

[0060] Furthermore, the present invention makes a specific judgment on the cause of abnormal operation of the cable in a single interval during a single operation cycle based on the average operating temperature and average voltage of the cable in the single interval during the cycle, and makes different corrections for different causes, thereby ensuring the normal operation of the cable.

[0061] Furthermore, the present invention determines that the abnormal cable operation is caused by damage to the cable sheath, and adjusts the sheath thickness standard in the replacement cable to the corresponding value according to the sheath damage level. By accurately judging the cause of the abnormal cable operation, the maintenance efficiency is effectively improved, and it is avoided that the cable sheath replaced by the maintenance personnel does not meet the requirements and leads to secondary rework, which wastes manpower and material resources, and further improves the accuracy of cable fault identification of the system described in the present invention.

[0062] Furthermore, the present invention determines that the abnormal operation of the cable is caused by the conductivity being lower than the allowable range, and adjusts the standard copper dosage in the maintenance cable according to the difference between the average operating temperature and the preset standard temperature. The copper dosage of the cable is increased to reduce the average operating temperature of the cable, thereby avoiding the abnormal operation of the cable. The present invention provides a theoretical basis for accurately identifying the fault point by accurately collecting cable data.

[0063] Furthermore, after completing the marking of the cables in each section, the present invention determines the primary operation score based on the ratio of the number of secondary abnormal cables to the total number of cables, and determines whether the environment of the area where the cables are located meets the requirements based on the primary operation score. By accurately identifying the cause of the abnormal operation, corresponding adjustments are made, which effectively improves the replacement efficiency and further improves the accuracy of cable fault identification by the system of the present invention.

[0064] Furthermore, when the present invention determines that the environment of the area where the cable is located does not meet the requirements, it adjusts the power supply power of the power supply end connected to the cable bus input end to eliminate the abnormality, thereby effectively ensuring the normal operation of the cable, avoiding the waste of resources caused by maintenance personnel inspecting cables in different sections in sections, and further improving the accuracy of cable fault identification by the system of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a structural block diagram of the cable data online acquisition system according to an embodiment of the present invention;

[0066] Figure 2 This is a flow chart of determining whether the operating condition of a single section cable in a single operating cycle is abnormal according to the secondary operating score according to an embodiment of the present invention;

[0067] Figure 3 A flowchart of an adjustment method for determining a sheath thickness standard of a replacement cable according to a single-section cable sheath damage level according to an embodiment of the present invention;

[0068] Figure 4 The present invention is a flowchart of a method for online cable data collection according to an embodiment of the present invention. DETAILED DESCRIPTION

[0069] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0070] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0071] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0072] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] See also Figure 1 As shown, it is a structural block diagram of the cable data online acquisition system according to an embodiment of the present invention. The cable data online acquisition system according to the present invention comprises:

[0074] A data acquisition module is used to collect operating parameters of cables in different sections in different operating cycles, wherein the operating parameters include several voltage measurement values ​​and several operating temperatures of a single section cable in a single operating cycle;

[0075] A data processing module, which is connected to the data acquisition module, is used to receive the operating parameters of the cables in different sections in different operating cycles, and calculate the average voltage and average operating temperature according to the cable sections and operating cycles;

[0076] A database, connected to the data processing module, for storing the average voltage and the average operating temperature output by the data processing module and the sheath thickness of the damaged part of the cable collected by the data collection module;

[0077] An evaluation module, which is connected to the data processing module and the database, respectively, and is used to determine a secondary operation score for a single section cable in a single operation cycle according to the average voltage and the average operation temperature output by the data processing module;

[0078] An analysis module connected to the evaluation module is used to determine whether the operation of a single section cable in a single operation cycle is abnormal according to the secondary operation score, and to determine the cause of the abnormal operation of the section cable according to the average operating temperature and average voltage of the single section cable in a single operation cycle, and to determine the primary operation score according to the number of secondary abnormal cables and the total number of cables, and to determine whether the environment of the area where the cable is located meets the requirements according to the primary operation score;

[0079] A correction module is connected to the analysis module, and is used to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage according to the average operating temperature of the cable in the corresponding period when it is determined that the cable conductivity is lower than the allowable range, and to adjust the power supply power of the power supply end connected to the cable bus input end to the corresponding value according to the difference between the first-level operation score and the first-level preset standard score, and to adjust the joint tightening force of the replacement cable to the corresponding joint tightening force according to the difference between the average voltage of the cable in the corresponding period and the preset standard average voltage when it is determined that the cable joint strength does not meet the standard.

[0080] See also Figure 2 As shown, it is a flowchart of determining whether the operating condition of a single section cable in a single operating cycle is abnormal according to the secondary operating score in an embodiment of the present invention. The analysis module determines whether the operation of a single section cable in a single operating cycle is abnormal according to the secondary operating score R2, wherein the calculation formula of R2 is:

[0081]

[0082] Among them, U 0 is the preset standard average voltage, T 0 is the preset standard average operating temperature, U is the average voltage and T is the average operating temperature;

[0083] The first condition determination method is that the analysis module determines that the section cable operates normally in the operation cycle; the first condition determination method satisfies that the secondary operation score of the section cable in the operation cycle is greater than or equal to the secondary preset standard score;

[0084] The second condition determination method is that the analysis module determines that the section cable operates abnormally in the operation cycle; the second condition determination method satisfies that the secondary operation score of the section cable in the operation cycle is less than the secondary preset standard score.

[0085] The present invention determines the operating status of the cable in a single interval according to the average voltage and average operating temperature of the cable, accurately determines the location of the fault by judging the operating status of the cable, and facilitates the maintenance and repair of the cable by accurately locating the fault point.

[0086] Specifically, the analysis module determines the determination method of the cause of abnormal operation of the section cable in a single operation cycle according to the average operation temperature and average voltage of the section cable in a single operation cycle, wherein:

[0087] The first cause determination method is that the analysis module determines that the sheath of the cable in the section is damaged, marks the cable as a first-level abnormal cable, and rates the sheath damage according to the actual thickness of the sheath at the damaged part of the cable; the first cause determination method satisfies that the average operating temperature is greater than the preset standard average operating temperature and the average voltage is less than the preset standard average voltage;

[0088] The second cause determination method is that the analysis module determines that the conductivity of the cable in the section is lower than the allowable range, marks the cable as a first-level abnormal cable, and adjusts the standard copper usage of the replacement cable to the corresponding standard copper usage according to the difference between the average operating temperature of the cable in several corresponding operating cycles and the preset standard average operating temperature; the second cause determination method satisfies that the average operating temperature is less than the preset standard average operating temperature and the average voltage is greater than or equal to the preset standard average voltage;

[0089] The third cause determination method is that the analysis module determines that the cable joint strength does not meet the standard, marks the cable as a first-level abnormal cable, and adjusts the joint tightening force of the replacement cable to the corresponding joint tightening force according to the difference between the average voltage of the cable in several corresponding operation cycles and the preset standard average voltage; the third cause determination method satisfies that the average operating temperature is greater than or equal to the preset standard average operating temperature and the average voltage is greater than the preset standard average voltage;

[0090] The fourth cause determination method is that the analysis module determines that the environment of the area where the cable is located does not meet the requirements, marks the cable as a secondary abnormal cable, and makes a secondary determination on whether the environment of the area where the cable is located meets the requirements based on the primary operation score; the fourth cause determination method satisfies that the average operating temperature is less than or equal to the preset standard average operating temperature and the average voltage is less than the preset standard average voltage.

[0091] The present invention makes a specific judgment on the cause of abnormal operation of the cable in a single interval in a single operation cycle according to the average operating temperature and average voltage of the cable in the interval, and makes different corrections for different causes, thereby ensuring the normal operation of the cable.

[0092] Specifically, the evaluation module determines the rating method for the sheath damage level according to the actual sheath thickness of the cable damage part in a single interval collected by the data collection module, wherein:

[0093] The first damage level rating method is that the evaluation module determines that the sheath damage level of the cable in the section is level one; the first damage level rating method satisfies that the actual thickness of the sheath is less than or equal to the first preset thickness;

[0094] The second damage level rating method is that the evaluation module determines that the sheath damage level of the cable in the section is level 2; the second damage level rating method satisfies that the actual sheath thickness is greater than the first preset thickness and the actual sheath thickness is less than or equal to the second preset thickness;

[0095] The third damage level rating method is that the evaluation module determines that the sheath damage level of the cable in the section is level three; the third damage level rating method satisfies that the actual thickness of the sheath is greater than the second preset thickness;

[0096] Wherein, the first preset thickness is smaller than the second preset thickness.

[0097] See also Figure 3 As shown, it is a flow chart of an embodiment of the present invention for determining an adjustment method for the sheath thickness standard of a replacement cable according to the sheath damage level of a single-section cable, wherein the correction module determines an adjustment method for the sheath thickness standard of a replacement cable according to the sheath damage level of a single-section cable, wherein:

[0098] The first thickness adjustment method is that the correction module uses the first preset thickness adjustment coefficient to adjust the jacket thickness standard of the replacement cable to a corresponding value; the first thickness adjustment method satisfies the evaluation module to determine that the cable jacket damage level is level one;

[0099] The second thickness adjustment method is that the correction module uses the second preset thickness adjustment coefficient to adjust the jacket thickness standard of the replacement cable to a corresponding value; the second thickness adjustment method satisfies the evaluation module to determine that the cable jacket damage level is level 2;

[0100] A third thickness adjustment method is that the correction module uses a third preset thickness adjustment coefficient to adjust the sheath thickness standard of the replacement cable to a corresponding value; the third thickness adjustment method satisfies the evaluation module to determine that the cable sheath damage level is level three.

[0101] Specifically, the correction module is provided with a first preset thickness adjustment coefficient α1, a second preset thickness adjustment coefficient α2 and a third preset thickness adjustment coefficient α3, wherein 1<α1<α2<α3<1.4,

[0102] The correction module records the jacket thickness standard of the replacement cable adjusted by αi as H', and sets H'=H×αi, where H is the initial jacket thickness standard of the replacement cable, and i=1,2,3.

[0103] The present invention determines that the abnormal operation of the cable is caused by damage to the cable sheath, and adjusts the sheath thickness standard in the replacement cable to the corresponding value according to the sheath damage level. By accurately judging the cause of the abnormal operation of the cable, the maintenance efficiency is effectively improved, and it is avoided that the cable sheath replaced by the maintenance personnel does not meet the requirements and causes secondary rework, which wastes manpower and material resources, and further improves the accuracy of cable fault identification of the system described in the present invention.

[0104] Specifically, the correction module determines the adjustment method for the standard copper usage of the replacement cable according to the difference between the average operating temperature of the cable in a number of corresponding operating cycles and the preset standard average operating temperature under the first preset condition, wherein:

[0105] The first usage adjustment method is that the correction module uses a first preset usage adjustment coefficient to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage; the first usage adjustment method satisfies that the difference between the average operating temperature and the preset standard average operating temperature is less than or equal to the first preset average temperature difference;

[0106] The second usage adjustment method is that the correction module uses the second preset usage adjustment coefficient to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage; the second usage adjustment method satisfies that the difference between the average operating temperature and the preset standard average operating temperature is greater than the first preset average temperature difference and the difference between the average operating temperature and the preset standard average operating temperature is less than or equal to the second preset average temperature difference;

[0107] The third usage adjustment method is that the correction module uses a third preset usage adjustment coefficient to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage; the third usage adjustment method satisfies that the difference between the average operating temperature and the preset standard average operating temperature is greater than the second preset average temperature difference;

[0108] The first preset condition is that the analysis module determines that the electrical conductivity of the cable is lower than an allowable range.

[0109] Specifically, the correction module is provided with a first preset average temperature difference △T1, a second preset average temperature difference △T2, a first preset thickness adjustment coefficient β1, a second preset thickness adjustment coefficient β2 and a third preset thickness adjustment coefficient β3, wherein △T1<△T2, 1<β1<β2<β3<1.6,

[0110] The correction module records the standard copper usage of the replacement cable adjusted by βj as Q', and sets Q'=Q×βj, where Q is the initial standard copper usage of the replacement cable, and j=1,2,3.

[0111] The present invention determines that the abnormal operation of the cable is caused by the conductivity being lower than the allowable range, adjusts the standard copper dosage in the maintenance cable according to the difference between the average operating temperature and the preset standard temperature, and increases the copper dosage of the cable to reduce the average operating temperature of the cable, thereby avoiding the abnormal operation of the cable. The present invention provides a theoretical basis for accurately identifying the fault point by accurately collecting cable data.

[0112] Specifically, the correction module determines the adjustment method for the joint tightening force of the replacement cable according to the difference between the average voltage of the cable in several corresponding operation cycles and the preset standard average voltage under the second preset condition, wherein:

[0113] The first tightening force adjustment method is that the correction module uses a first preset tightening force adjustment coefficient to adjust the joint tightening force of the replacement cable to a corresponding value; the first tightening force adjustment method satisfies that the difference between the average voltage and the preset standard average voltage is less than or equal to the first preset average voltage difference;

[0114] The second tightening force adjustment method is that the correction module uses the second preset tightening force adjustment coefficient to adjust the joint tightening force of the replacement cable to a corresponding value; the second tightening force adjustment method satisfies that the difference between the average voltage and the preset standard average voltage is greater than the first preset average voltage difference and the difference between the average voltage and the preset standard average voltage is less than or equal to the second preset average voltage difference;

[0115] The third tightening force adjustment method is that the correction module uses a third preset tightening force adjustment coefficient to adjust the joint tightening force of the replacement cable to a corresponding value; the third tightening force adjustment method satisfies that the difference between the average voltage and the preset standard average voltage is greater than the second preset average voltage difference;

[0116] The second preset condition is that the analysis module determines that the cable joint strength does not meet the standard.

[0117] Specifically, the correction module is provided with a first preset average voltage difference △U1, a second preset average voltage difference △U2, a first preset tightening force adjustment coefficient γ1, a second preset tightening force adjustment coefficient γ2 and a third preset tightening force adjustment coefficient γ3, wherein △U1<△U2, 1<γ1<γ2<γ3<1.8,

[0118] The correction module records the joint tightening force of the replacement cable adjusted by γk as F', and sets F'=F×γk, where F is the initial joint tightening force of the replacement cable, and k=1,2,3.

[0119] Specifically, after completing the marking of each cable, the analysis module counts the number of secondary abnormal cables, calculates the ratio of the number of secondary abnormal cables to the total number of cables to determine the primary operation score R1, and sets Among them, Na is the number of cables in normal operation, Nb is the number of first-level abnormal cables, and Nc is the number of second-level abnormal cables. The secondary judgment method is to determine whether the environment of the cable area meets the requirements based on the first-level operation score. Among them,

[0120] The first environment secondary determination method is that the analysis module secondary determines that the environment of the area where the cable is located does not meet the requirements, and adjusts the power supply power of the power supply end connected to the cable bus input end to the corresponding value according to the difference between the first-level operation score and the first-level preset standard score; the first environment secondary determination method satisfies that the first-level operation score is greater than or equal to the first-level preset standard score;

[0121] The second environment secondary determination method is that the analysis module secondary determines that the environment of the area where the cable is located meets the requirements; the second environment secondary determination method satisfies that the first-level operation score is less than the first-level preset standard score.

[0122] After completing the marking of the cables in each section, the present invention determines the primary operation score according to the ratio of the number of secondary abnormal cables to the total number of cables, and determines whether the environment of the area where the cables are located meets the requirements based on the primary operation score. By accurately identifying the cause of the abnormal operation, corresponding adjustments are made, which effectively improves the replacement efficiency and further improves the accuracy of the system of the present invention in identifying cable faults.

[0123] Specifically, the correction module determines the adjustment method for the power supply end according to the difference between the first-level operation score and the first-level preset standard score under the third preset condition, wherein:

[0124] The first power adjustment mode is that the correction module uses the first power adjustment coefficient to adjust the power supply power of the power supply end to the first power supply power; the first power adjustment mode satisfies that the difference between the first-level operation score and the first-level preset standard score is less than or equal to the first preset score difference;

[0125] The second power adjustment mode is that the correction module uses the second power adjustment coefficient to adjust the power supply power of the power supply end to the second power supply power; the second power adjustment mode satisfies that the difference between the first-level operation score and the first-level preset standard score is greater than the first preset score difference and the difference between the first-level operation score and the first-level preset standard score is less than or equal to the second preset score difference;

[0126] The third power adjustment mode is that the correction module uses the third power adjustment coefficient to adjust the power supply power of the power supply end to the third power supply power; the third power adjustment mode satisfies that the difference between the first-level operation score and the first-level preset standard score is greater than the second preset score difference;

[0127] Wherein, the first preset score difference is less than the second preset score difference;

[0128] The third preset condition is that the analysis module determines for the second time that the environment of the area where the cable is located does not meet the requirements.

[0129] Specifically, the correction module is provided with a first preset score difference △R1, a first preset score difference △R2, a first power adjustment coefficient δ1, a first power adjustment coefficient δ2 and a first power adjustment coefficient δ3, wherein △R1<△R2, 1<δ1<δ2<δ3<1.5,

[0130] The correction module records the power supply power of the power supply end adjusted by δe as W', and sets W'=W×δe, where W is the initial power supply power of the power supply end, and e=1, 2, 3.

[0131] When the present invention determines that the environment of the area where the cable is located does not meet the requirements, it adjusts the power supply power of the power supply end connected to the cable bus input end to eliminate the abnormality, effectively ensuring the normal operation of the cable, avoiding the waste of resources caused by maintenance personnel repairing cables in different sections in sections, and further improving the accuracy of cable fault identification by the system of the present invention.

[0132] See also Figure 4 As shown, it is an online cable data collection method according to an embodiment of the present invention. The online cable data collection method according to the present invention comprises:

[0133] Step S1, the data acquisition module periodically collects the operating parameters of the cable in different intervals, and sends each operating parameter to the data processing module; the operating parameters include a number of voltage measurement values ​​and a number of operating temperatures of the cable in a single interval in a single operating cycle;

[0134] Step S2, the data processing module receives the operating parameters collected by the data processing module, and calculates the average voltage and average operating temperature according to the cable interval and operating cycle;

[0135] Step S3, the data processing module transmits the calculated average voltage and the average operating temperature to a database;

[0136] Step S4, the evaluation module determines the operating condition of the section cable in the corresponding operating cycle based on the average voltage and the average operating temperature of the single section cable in several corresponding operating cycles output by the data processing module.

[0137] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0138] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cable data online acquisition system, characterized in that: include: A data acquisition module is used to collect operating parameters of cables in different sections in different operating cycles, wherein the operating parameters include several voltage measurement values ​​and several operating temperatures of a single section cable in a single operating cycle; A data processing module, which is connected to the data acquisition module, is used to receive the operating parameters of the cables in different sections in different operating cycles, and calculate the average voltage and average operating temperature according to the cable sections and operating cycles; A database, connected to the data processing module, for storing the average voltage and the average operating temperature output by the data processing module and the sheath thickness of the damaged part of the cable collected by the data collection module; An evaluation module, which is connected to the data processing module and the database, respectively, and is used to determine a secondary operation score R2 for a single section cable in a single operation cycle; The calculation formula of R2 is: Wherein, U0 is a preset standard average voltage, T0 is a preset standard average operating temperature, U is the average voltage and T is the average operating temperature; An analysis module, which is connected to the evaluation module, is used to determine whether the operation of a single section cable in a single operation cycle is abnormal according to the secondary operation score, and to determine the cause of the abnormal operation of the section cable according to the average operating temperature and average voltage of the single section cable in a single operation cycle, and to determine the primary operation score R1 according to the number of secondary abnormal cables and the total number of cables, and to determine whether the environment of the area where the cable is located meets the requirements according to the primary operation score; The first cause determination method is to determine that the sheath of the cable in the section is damaged, mark the cable as a first-level abnormal cable, and rate the sheath damage according to the actual thickness of the sheath at the damaged part of the cable; the first cause determination method satisfies that the average operating temperature is greater than the preset standard average operating temperature and the average voltage is less than the preset standard average voltage; The second cause determination method is that the analysis module determines that the conductivity of the cable in the section is lower than the allowable range, marks the cable as a first-level abnormal cable, and adjusts the standard copper usage of the replacement cable to the corresponding standard copper usage according to the difference between the average operating temperature of the cable in several corresponding operating cycles and the preset standard average operating temperature; the second cause determination method satisfies that the average operating temperature is less than the preset standard average operating temperature and the average voltage is greater than or equal to the preset standard average voltage; The third cause determination method is that the analysis module determines that the cable joint strength does not meet the standard, marks the cable as a first-level abnormal cable, and adjusts the joint tightening force of the replacement cable to the corresponding joint tightening force according to the difference between the average voltage of the cable in several corresponding operating cycles and the preset standard average voltage; the third cause determination method satisfies that the average operating temperature is greater than or equal to the preset standard average operating temperature and the average voltage is greater than the preset standard average voltage; The fourth cause determination method is that the analysis module determines that the environment of the area where the cable is located does not meet the requirements, marks the cable as a secondary abnormal cable, and performs a secondary determination on whether the environment of the area where the cable is located meets the requirements based on the primary operation score; the fourth cause determination method satisfies that the average operating temperature is less than or equal to the preset standard average operating temperature and the average voltage is less than the preset standard average voltage; set up Among them, Na is the number of cables in normal operation, Nb is the number of primary abnormal cables, and Nc is the number of secondary abnormal cables; A correction module is connected to the analysis module, and is used to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage according to the average operating temperature of the cable in the corresponding period when it is determined that the cable conductivity is lower than the allowable range, and to adjust the power supply power of the power supply end connected to the cable bus input end to the corresponding value according to the difference between the first-level operation score and the first-level preset standard score, and to adjust the joint tightening force of the replacement cable to the corresponding joint tightening force according to the difference between the average voltage of the cable in the corresponding period and the preset standard average voltage when it is determined that the cable joint strength does not meet the standard.

2. The cable data online acquisition system according to claim 1, characterized in that: The analysis module determines whether the operation of a single section cable in a single operation cycle is abnormal according to the secondary operation score. The first condition determination method is that the analysis module determines that the section cable operates normally in the operation cycle; The first condition determination method satisfies that the secondary operation score of the cable in the section during the operation cycle is greater than or equal to the secondary preset standard score; The second condition determination method is that the analysis module determines that the section cable operates abnormally in the operation cycle; The second condition determination method satisfies that the secondary operation score of the section cable in the operation cycle is less than the secondary preset standard score.

3. The cable data online acquisition system according to claim 2, characterized in that: The evaluation module determines the rating method for the sheath damage level according to the actual sheath thickness of the cable damage part in a single interval collected by the data collection module, wherein: The first damage level rating method is that the evaluation module determines that the sheath damage level of the cable in the section is level one; the first damage level rating method satisfies that the actual thickness of the sheath is less than or equal to the first preset thickness; The second damage level rating method is that the evaluation module determines that the sheath damage level of the cable in the section is level 2; the second damage level rating method satisfies that the actual sheath thickness is greater than the first preset thickness and the actual sheath thickness is less than or equal to the second preset thickness; The third damage level rating method is that the evaluation module determines that the cable sheath damage level in the interval is level three; the third damage level rating method satisfies that the actual thickness of the sheath is greater than the second preset thickness; Wherein, the first preset thickness is smaller than the second preset thickness.

4. The cable data online acquisition system according to claim 3, characterized in that: The correction module determines the adjustment method for the sheath thickness standard of the replacement cable according to the cable sheath damage level in a single interval, wherein: The first thickness adjustment method is that the correction module uses the first preset thickness adjustment coefficient to adjust the jacket thickness standard of the replacement cable to a corresponding value; the first thickness adjustment method satisfies the evaluation module to determine that the cable jacket damage level is level one; The second thickness adjustment method is that the correction module uses the second preset thickness adjustment coefficient to adjust the jacket thickness standard of the replacement cable to a corresponding value; the second thickness adjustment method satisfies the evaluation module to determine that the cable jacket damage level is level 2; A third thickness adjustment method is that the correction module uses a third preset thickness adjustment coefficient to adjust the sheath thickness standard of the replacement cable to a corresponding value; the third thickness adjustment method satisfies the evaluation module to determine that the cable sheath damage level is level three.

5. The cable data online acquisition system according to claim 4, characterized in that: The correction module determines the adjustment method for the standard copper usage of the replacement cable according to the difference between the average operating temperature of the cable in a number of corresponding operating cycles and the preset standard average operating temperature under the first preset condition, wherein: The first usage adjustment method is that the correction module uses a first preset usage adjustment coefficient to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage; the first usage adjustment method satisfies that the difference between the average operating temperature and the preset standard average operating temperature is less than or equal to the first preset average temperature difference; The second usage adjustment method is that the correction module uses the second preset usage adjustment coefficient to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage; the second usage adjustment method satisfies that the difference between the average operating temperature and the preset standard average operating temperature is greater than the first preset average temperature difference and the difference between the average operating temperature and the preset standard average operating temperature is less than or equal to the second preset average temperature difference; The third usage adjustment method is that the correction module uses a third preset usage adjustment coefficient to adjust the standard copper usage of the replacement cable to the corresponding standard copper usage; the third usage adjustment method satisfies that the difference between the average operating temperature and the preset standard average operating temperature is greater than the second preset average temperature difference; The first preset condition is that the analysis module determines that the electrical conductivity of the cable is lower than an allowable range.

6. The cable data online acquisition system according to claim 5, characterized in that: The correction module determines the adjustment method for the joint tightening force of the replacement cable according to the difference between the average voltage of the cable in several corresponding operation cycles and the preset standard average voltage under the second preset condition, wherein: The first tightening force adjustment method is that the correction module uses a first preset tightening force adjustment coefficient to adjust the joint tightening force of the replacement cable to a corresponding value; the first tightening force adjustment method satisfies that the difference between the average voltage and the preset standard average voltage is less than or equal to the first preset average voltage difference; The second tightening force adjustment method is that the correction module uses the second preset tightening force adjustment coefficient to adjust the joint tightening force of the replacement cable to a corresponding value; the second tightening force adjustment method satisfies that the difference between the average voltage and the preset standard average voltage is greater than the first preset average voltage difference and the difference between the average voltage and the preset standard average voltage is less than or equal to the second preset average voltage difference; The third tightening force adjustment method is that the correction module uses a third preset tightening force adjustment coefficient to adjust the joint tightening force of the replacement cable to a corresponding value; the third tightening force adjustment method satisfies that the difference between the average voltage and the preset standard average voltage is greater than the second preset average voltage difference; The second preset condition is that the analysis module determines that the cable joint strength does not meet the standard.

7. The cable data online acquisition system according to claim 6, characterized in that: After the analysis module completes the marking of each cable, it determines whether the environment of the area where the cable is located meets the requirements according to the primary operation score, and then determines the secondary determination method. The first environment secondary determination method is that the analysis module secondary determines that the environment of the area where the cable is located does not meet the requirements, and adjusts the power supply power of the power supply end connected to the cable bus input end to the corresponding value according to the difference between the first-level operation score and the first-level preset standard score; the first environment secondary determination method satisfies that the first-level operation score is greater than or equal to the first-level preset standard score; The second environment secondary determination method is that the analysis module secondary determines that the environment of the area where the cable is located meets the requirements; the second environment secondary determination method satisfies that the first-level operation score is less than the first-level preset standard score.

8. The cable data online acquisition system according to claim 7, characterized in that: The correction module determines the adjustment method for the power supply end according to the difference between the first-level operation score and the first-level preset standard score under the third preset condition, wherein: The first power adjustment mode is that the correction module uses the first power adjustment coefficient to adjust the power supply power of the power supply end to the first power supply power; the first power adjustment mode satisfies that the difference between the first-level operation score and the first-level preset standard score is less than or equal to the first preset score difference; The second power adjustment mode is that the correction module uses the second power adjustment coefficient to adjust the power supply power of the power supply end to the second power supply power; the second power adjustment mode satisfies that the difference between the first-level operation score and the first-level preset standard score is greater than the first preset score difference and the difference between the first-level operation score and the first-level preset standard score is less than or equal to the second preset score difference; The third power adjustment mode is that the correction module uses the third power adjustment coefficient to adjust the power supply power of the power supply end to the third power supply power; the third power adjustment mode satisfies that the difference between the first-level operation score and the first-level preset standard score is greater than the second preset score difference; Wherein, the first preset score difference is less than the second preset score difference; The third preset condition is that the analysis module determines for the second time that the environment of the area where the cable is located does not meet the requirements.

9. A method for collecting data using the cable data online collection system according to any one of claims 1 to 8, characterized in that: include: Step S1, the data acquisition module periodically collects the operating parameters of the cable in different intervals, and sends each operating parameter to the data processing module; The operating parameters include a number of voltage measurement values ​​and a number of operating temperatures of a single section cable in a single operating cycle; Step S2, the data processing module receives the operating parameters collected by the data processing module, and calculates the average voltage and average operating temperature according to the cable interval and operating cycle; Step S3, the data processing module transmits the calculated average voltage and the average operating temperature to a database; Step S4, the evaluation module determines the operating condition of the section cable in the corresponding operating cycle based on the average voltage and the average operating temperature of the single section cable in several corresponding operating cycles output by the data processing module.

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