CN115656683A

CN115656683A - Cable operation monitoring method, system, terminal equipment and storage medium

Info

Publication number: CN115656683A
Application number: CN202211370821.5A
Authority: CN
Inventors: 汪沁澜
Original assignee: Shenzhen Mingze Intelligent Electric Power Technology Co ltd
Current assignee: Shenzhen Mingze Intelligent Electric Power Technology Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-01-31
Anticipated expiration: 2042-11-03
Also published as: CN115656683B

Abstract

The application relates to the technical field of power monitoring, in particular to a method, a system, terminal equipment and a storage medium for monitoring cable operation, wherein the method comprises the following steps: acquiring an operation signal; analyzing the operating signal to generate a corresponding target detection item; judging whether the target detection item meets the preset safety standard or not; if the preset safety standard is not met, acquiring a corresponding abnormal detection item; judging the abnormal type of the abnormal detection item according to a preset monitoring standard; if the abnormal type is spontaneous abnormality, acquiring and analyzing corresponding abnormal data, and generating a corresponding induction factor as a judgment result; if the abnormal type is external abnormality, acquiring a corresponding environmental factor as the judgment result; and generating a corresponding monitoring report according to the judgment result. The method, the system, the terminal device and the storage medium for monitoring the operation of the cable can improve the monitoring effect in the operation process of the cable.

Description

Cable operation monitoring method, system, terminal equipment and storage medium

Technical Field

The present application relates to the field of power monitoring technologies, and in particular, to a method, a system, a terminal device, and a storage medium for monitoring cable operation.

Background

The high-voltage cable circulation value is used as one embodiment of the cable running state and is a necessary detection item in the cable operation and maintenance management process.

High tension cable is when passing through the alternating current, and the cable periphery will generate corresponding induction magnetic field, and current value is big more this moment, and then magnetic field intensity is just stronger, will drive the induction voltage that generates on the cable sheath after producing the eddy current effect from this, and high tension cable's sheath structure guarantees that the cable conductor does not expose's important outside constitutes, and it takes place the circulation abnormal phenomena, will seriously hinder cable normal power supply, and sheath circulation abnormal reaction, will produce huge harm to high voltage circuit system: firstly, the cable ampacity will be affected, secondly, the cable jacket life is reduced, and thirdly, partial discharge conditions are generated.

The traditional method is that an operation and maintenance department regularly inspects, which causes great investment in manpower, and because the high-voltage cable circulation may also have potential danger of high voltage electricity, when the high-voltage cable circulation is abnormal, the specific induction reason of the high-voltage cable circulation is difficult to find, and the monitoring effect is poor.

Disclosure of Invention

In order to improve the monitoring effect in the cable operation process, the application provides a cable operation monitoring method, a system, terminal equipment and a storage medium.

In a first aspect, the present application provides a method for monitoring cable operation, which adopts the following technical scheme:

acquiring an operation signal;

analyzing the operating signal to generate a corresponding target detection item;

judging whether the target detection item meets the preset safety standard or not;

if the abnormal detection item does not meet the preset safety standard, acquiring a corresponding abnormal detection item;

judging the abnormal type of the abnormal detection item according to a preset monitoring standard;

if the abnormal type is spontaneous abnormality, acquiring and analyzing corresponding abnormal data, and generating a corresponding induction factor as a judgment result;

if the abnormal type is external abnormality, acquiring a corresponding environmental factor as the judgment result;

and generating a corresponding monitoring report according to the judgment result.

By adopting the technical scheme, the operation signal in the cable operation process is analyzed, the corresponding target detection item is generated, whether the target detection item meets the corresponding preset safety standard or not is judged immediately, then preliminary safety judgment can be performed on the target detection item, if the target detection item does not meet the corresponding preset safety standard, the abnormal type of the abnormal detection item in the target detection item is further judged, further spontaneous abnormality inside the cable or external abnormality outside the cable is obtained, further line abnormal data or corresponding external environment factors in the cable operation process are analyzed and judged, the corresponding judgment result is obtained, a monitoring report is generated, and due to the fact that the abnormal target detection item is subjected to classification analysis, the monitoring effect in the cable operation process is improved.

Optionally, the abnormal data includes cable loop data, and if the abnormal type is a spontaneous abnormality, acquiring and analyzing corresponding abnormal data, and generating a corresponding inducing factor as a determination result includes the following steps:

acquiring a corresponding circulation value according to the cable circulation data;

judging whether the circulation value exceeds a preset circulation threshold value or not;

if the circulation value exceeds the preset circulation threshold value, acquiring a corresponding grounding mode;

judging whether the grounding mode meets a preset grounding standard or not;

if the grounding mode does not accord with the preset grounding standard, acquiring and generating the corresponding inducing factor according to the current connection mode as the judgment result;

and if the grounding mode meets the preset grounding standard, acquiring and analyzing cable wiring information, and generating the corresponding inducing factor as the judgment result.

By adopting the technical scheme, whether the corresponding circulation value in the cable circulation data exceeds the corresponding preset circulation threshold value or not is judged, the safety of the cable circulation data can be preliminarily determined, the grounding mode corresponding to the cable is further checked, the current connection mode which does not accord with the preset grounding standard is obtained and is used as an inducing factor of the abnormity of the cable circulation data, and therefore the monitoring efficiency of the grounding mode of the cable circulation data when the abnormity occurs is improved.

Optionally, if the grounding manner meets a preset grounding standard, acquiring and analyzing cable connection information, and generating the corresponding inducing factor as the determination result includes the following steps:

if the grounding mode meets a preset grounding standard, acquiring a corresponding current wiring mode according to the cable wiring information;

judging whether the current wiring mode meets the corresponding wiring standard or not;

if the current wiring mode does not accord with the corresponding wiring standard, acquiring a corresponding abnormal wiring item;

establishing a corresponding abnormal circulation model according to the abnormal wiring item;

acquiring a corresponding target circulation value according to the abnormal circulation model;

and selecting the abnormal wiring item corresponding to the maximum target circulation value, and generating the corresponding induction factor as the judgment result.

By adopting the technical scheme, the wiring mode of the cable is analyzed on the premise that the grounding mode accords with the corresponding standard, the abnormal wiring item which does not accord with the wiring standard is obtained, the corresponding abnormal circulation model is further established according to the abnormal wiring item, the obtained corresponding target circulation value is evaluated, and the abnormal wiring item with the maximum target circulation value is selected as the main induction factor for causing the cable circulation abnormality, so that the monitoring and checking effect of the abnormal wiring item in the current wiring mode of the cable is improved.

Optionally, the abnormal data includes connection material data, and if the type of the abnormality is a spontaneous abnormality, acquiring and analyzing corresponding abnormal data, and generating a corresponding inducing factor as a determination result includes the following steps:

acquiring corresponding material attribute data according to the connecting material data;

judging whether the material attribute data meet the preset material standard or not;

if the material attribute data meet the preset material standard, acquiring the working performance of the current connecting material;

judging whether the working performance meets the cable running condition or not;

and if the working performance does not accord with the cable running condition, acquiring the working performance and the connecting position of the current connecting material, and generating the corresponding inducing factor as the judgment result.

By adopting the technical scheme, when the cable loop current appears abnormally, the material attribute data of the connecting material data is analyzed and judged, whether the attribute of the obtained material meets the preset material standard calibrated when the cable normally runs or not is judged, whether the working performance of the current connecting material meets the running condition of the cable or not is further judged if the attribute of the obtained material meets the preset material standard, and if the attribute of the obtained material does not meet the preset material standard, the corresponding working performance and the connecting position are obtained, so that the monitoring effect on the cable connecting material is improved.

Optionally, if the abnormality type is a spontaneous abnormality, the following steps are further included after acquiring and analyzing corresponding abnormal data and generating a corresponding inducing factor as a determination result:

acquiring a corresponding line part according to the abnormal data;

acquiring corresponding assembly information according to the line part;

and acquiring a corresponding assembler directory in the assembly information as feedback information.

By adopting the technical scheme, when the cable line is abnormal spontaneously, the tracing effect on the cable line can be improved.

Optionally, the environmental factor includes oxidation data, and if the abnormality type is an external abnormality, acquiring the corresponding environmental factor as a determination result includes the following steps:

acquiring corresponding insulated connecting equipment according to the oxidation data;

judging whether the insulation performance of the insulation connection equipment meets a preset insulation standard or not;

if the insulation performance of the insulated connecting equipment does not meet the preset insulation standard, acquiring oxidation degree information corresponding to the insulated connecting equipment;

and identifying the oxidation degree information according to a preset oxidation standard, and generating a corresponding target oxidation model as the judgment result.

Through adopting above-mentioned technical scheme, according to the oxidation data around the cable, obtain the insulating jointing equipment that the cable received the influence, further judge whether its insulating properties accords with preset insulation standard, if not accord with then obtain its oxidation degree information of oxidizing to generate the target oxidation model that corresponds insulating properties under current oxidation degree, thereby promoted the monitoring investigation effect to the insulating jointing equipment of cable.

Optionally, the environmental factors include temperature and humidity data, and if the abnormality type is an external abnormality, acquiring the corresponding environmental factor as a determination result includes the following steps:

judging whether the temperature and humidity data meet a preset environmental standard or not;

if the temperature and humidity data do not accord with the preset environment standard, acquiring a corresponding line live condition;

acquiring corresponding line characteristic information according to the line live condition;

judging whether the line characteristic information meets a preset damage standard or not;

if the line characteristic information meets the preset damage standard, acquiring corresponding line damaged data;

and identifying the damaged line data, and generating corresponding target influence factors as the judgment result.

Through adopting above-mentioned technical scheme, it is live not conform to the circuit of predetermineeing the environmental standard to acquire warm and humid data, further judges whether live characteristic information of circuit accords with the corresponding damage standard of predetermineeing, and then acquires the impaired data of circuit that accords with predetermined damage standard and arouses the impaired target influence factor of circuit to cable run has been promoted and has received the monitoring effect of external damage.

In a second aspect, the present application further provides a cable operation monitoring system, including:

the first acquisition module is used for acquiring the operation signal;

the analysis module is used for analyzing the operation signal and generating a corresponding target detection item;

the first judgment module is used for judging whether the target detection meets the preset safety standard or not;

the second acquisition module is used for acquiring a corresponding abnormal detection item if the second acquisition module does not accord with the preset safety standard;

the second judgment module is used for judging the abnormal type of the abnormal detection item according to a preset monitoring standard;

the analysis module is used for acquiring and analyzing corresponding abnormal data and generating corresponding inducing factors as judgment results if the abnormal type is spontaneous abnormality;

the third acquisition module is used for acquiring corresponding environmental factors as a judgment result if the abnormality type is external abnormality;

and the generating module is used for generating a corresponding monitoring report according to the judgment result.

By adopting the technical scheme, the operation signal acquired by the first acquisition module in the operation process of the cable is analyzed according to the analysis module to generate a corresponding target detection item, whether the target detection item meets the corresponding preset safety standard or not is judged through the first judgment module, and then preliminary safety judgment can be performed on the target detection item, if the target detection item does not meet the corresponding preset safety standard, the abnormal detection item acquired by the second acquisition module in the target detection item is further judged through the second judgment module, and further the spontaneous abnormal type inside the cable or the external abnormal type outside the cable is obtained, the line abnormal data in the operation process of the cable is further analyzed through the analysis module and the corresponding judgment result is acquired, the judgment result corresponding to the external environmental factors is acquired through the third acquisition module, and finally all judgment results are summarized through the generation module to generate the monitoring report, and the abnormal target detection item is classified and analyzed, so that the monitoring effect in the operation process of the cable is improved.

In a third aspect, the present application provides a terminal device, which adopts the following technical solution:

a terminal device comprises a memory and a processor, wherein the memory stores computer instructions capable of running on the processor, and when the processor loads and executes the computer instructions, the cable running monitoring method is adopted.

By adopting the technical scheme, the cable operation monitoring method generates the computer instruction, and the computer instruction is stored in the memory to be loaded and executed by the processor, so that the terminal equipment is manufactured according to the memory and the processor, and the use is convenient.

In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solutions:

a computer readable storage medium, having stored therein computer instructions, which when loaded and executed by a processor, implement a method for monitoring cable operation as described above

By adopting the technical scheme, the cable operation monitoring method generates the computer instruction and stores the computer instruction in the computer readable storage medium so as to be loaded and executed by the processor, and the computer instruction can be conveniently read and stored through the computer readable storage medium.

To sum up, the application comprises the following beneficial technical effects: analyzing an operation signal in the operation process of the cable to generate a corresponding target detection item, immediately judging whether the target detection item meets a corresponding preset safety standard, further performing preliminary safety judgment on the target detection item, if the target detection item meets the corresponding preset safety standard, acquiring real-time monitoring data of the target detection item, if the target detection item does not meet the corresponding preset safety standard, further judging the abnormal type of the abnormal detection item in the target detection item, further obtaining spontaneous abnormality inside the cable or external abnormality outside the cable, further analyzing and judging line abnormal data or corresponding external environment factors during the operation of the cable, acquiring a corresponding judgment result, and generating a monitoring report.

Drawings

Fig. 1 is a schematic flow chart of steps S101 to S108 in a cable operation monitoring method according to the present application.

Fig. 2 is a schematic flow chart of steps S201 to S206 in a cable operation monitoring method according to the present application.

Fig. 3 is a schematic flow chart of steps S301 to S306 in the cable operation monitoring method according to the present application.

Fig. 4 is a schematic flowchart of steps S401 to S405 in a cable operation monitoring method according to the present application.

Fig. 5 is a schematic flow chart of steps S501 to S503 in a cable operation monitoring method according to the present application.

Fig. 6 is a schematic flowchart of steps S601 to S604 in a cable operation monitoring method according to the present application.

Fig. 7 is a schematic flowchart of steps S701 to S706 in a cable operation monitoring method according to the present application.

Fig. 8 is a block diagram of a cable run monitoring system according to the present application.

Description of reference numerals:

1. a first acquisition module; 2. an analysis module; 3. a first judgment module; 4. a second acquisition module; 5. a second judgment module; 6. an analysis module; 7. a third obtaining module; 8. and generating a module.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

For the convenience of explanation of the present solution, a mechanism of generation of the high-voltage cable sheath circulation and a hazard generated by the high-voltage cable sheath circulation abnormality are explained first.

The generation mechanism of the high-voltage cable sheath circulation is as follows: when a high-voltage single-core cable core passes through alternating current, an induction magnetic field is generated around the cable core, the intensity of the induction magnetic field is in direct proportion to the current passing through the cable core, and due to an eddy current effect, induction voltage can be generated on a metal sheath of the high-voltage single-core cable core, and the intensity of the induction voltage is not only related to the core current, the cable length and the laying mode, but also related to the arrangement mode, the distance and the like of surrounding loops.

When the cable outer sheath is damaged and suffers from overvoltage or asymmetric short-circuit fault, the metal sheath is grounded at multiple points, namely a loop is formed among the metal sheath, the grounding wire and a grounding system, so that induction circulation is generated, the current can reach 50% -95% of the current of the wire core, the metal sheath or the armor layer can be heated, a large amount of electric energy is consumed, the insulation aging of the cable is accelerated, and even the breakdown of the weak insulation part of the cable is caused.

Damage of high voltage cable sheath circulation anomaly: (1) When the circulation of the cable sheath is abnormal, the current-carrying capacity of the cable line is directly influenced, the influence of the circulation abnormality of the cable sheath on the current-carrying capacity can reach 30% -40%, and when the circulation abnormality of the cable sheath occurs, the allowable maximum load of the cable line cannot exceed 60% of the current-carrying capacity.

(2) The circulation of the cable sheath is abnormal, so that the cable loss is caused to generate heat, the local high temperature of insulation is caused, the insulation aging is accelerated, and the service life of the cable is shortened.

(3) The circulation of the cable sheath is abnormal, the cable sheath can be damaged, the multipoint grounding phenomenon can occur, the damage of the cable sheath can easily cause the corrosion of the metal sheath, the aging probability of the main insulation is increased, partial discharge is easily induced, and the safe operation of a cable line is greatly threatened.

The embodiment of the application discloses a cable operation monitoring method, as shown in fig. 1, comprising the following steps:

s101, acquiring an operation signal;

s102, analyzing the operation signal to generate a corresponding target detection item;

s103, judging whether the target detection item meets a preset safety standard or not;

s104, if the preset safety standard is not met, acquiring a corresponding abnormal detection item;

s105, judging the abnormal type of the abnormal detection item according to a preset monitoring standard;

s106, if the abnormal type is spontaneous abnormality, acquiring and analyzing corresponding abnormal data, and generating corresponding induction factors as judgment results;

s107, if the abnormal type is external abnormality, acquiring corresponding environmental factors as a judgment result;

and S108, generating a corresponding monitoring report according to the judgment result.

The operation signals in the steps from S101 to S102 refer to various operation signals collected by the cable during normal operation; the target detection item refers to a to-be-detected item corresponding to each operation signal.

In practical application, the operation and maintenance of the cable line need to pay attention to various operation signals in the operation process of the cable line at any time, and the state change of the cable in the operation process can be known through the operation signals.

For example, in a load operation signal of a cable line, a maximum current is generally defined in the cable line in accordance with a cross-sectional area of a cable conductor, a type of insulation, and the like, and the load current of a wire line, the sheath temperature of a cable, and the like are measured by various instruments, and as a main load monitoring measure, the insulation of the cable is prevented from exceeding an allowable maximum temperature to shorten the cable life, so that the load operation signal is analyzed to generate a corresponding load current detection term.

Step S103 to step S104, wherein the preset safety standard refers to a safety standard corresponding to each target detection item in the running process of the cable; the real-time monitoring data refers to real-time updating monitoring data of each target detection item; the abnormal detection items refer to detection items which do not meet the preset safety standard in the target detection items.

For example, when measuring the temperature of a buried cable, the temperature of soil without other heat sources in the same area should be measured, and therefore, the corresponding preset safety standard obtained according to the cable temperature detection item is as follows: and under any condition, the temperature of the soil in the same depth in other places of the local section is not higher than 10 ℃, the temperature of the soil in the same depth of the cable is 20 ℃ after detection, at the moment, the temperature of the cable displayed in the cable temperature detection item is 25 ℃, the cable temperature detection item is judged to meet the corresponding preset safety standard, and the real-time monitoring data of the cable temperature are continuously acquired.

For another example, the soil temperature at the same depth of the detected cable is 20 ℃, at this time, the cable temperature displayed in the cable temperature detection item is 35 ℃, it is determined that the cable temperature detection item does not meet the corresponding preset safety standard, and the cable temperature detection item is acquired and calibrated as an abnormal detection item.

The preset monitoring standard from step S105 to step S107 refers to a standard that each item of monitoring data of the cable should meet when the cable is in operation; spontaneous abnormality is the condition that the cable is not affected by the outside and is abnormal; the induction factor refers to a relevant induction factor for generating abnormal data, and the external abnormality refers to a condition that the cable is abnormal due to the influence of external individual conditions; the environmental factors refer to external environmental condition factors in the operation process of the cable.

In practical application, whether spontaneous abnormality or external abnormality may cause circulation abnormality of the metal sheath of the cable, and further affect the rated current-carrying capacity of the cable, taking direct grounding of two ends of the sheath as an example, in all grounding modes of the cable sheath, circulation of the two ends of the metal sheath which are directly grounded is the most serious, and the influence on the current-carrying capacity is the greatest.

The monitoring report in step S108 refers to a summary of the analysis data that causes the generation of each anomaly type.

For example, when a high-voltage single-core cable normally runs, besides circulating current, capacitance current and unbalanced grounding network current of two grounding points of a sheath exist in a cable sheath, so that the measured current is theoretically larger than an actual circulating current value, the type of the abnormality belongs to spontaneous abnormality, and the abnormality cannot be overcome under the general condition, so that under the abnormal condition that the current measurement value is larger than the actual circulating current value, a system outputs a monitoring report of related induction factors of the capacitance current and the unbalanced grounding network current of the two grounding points of the sheath.

The method for monitoring the operation of the cable provided by this embodiment analyzes an operation signal in the operation process of the cable to generate a corresponding target detection item, immediately judges whether the target detection item meets a corresponding preset safety standard, and then performs preliminary safety judgment on the target detection item, if the target detection item does not meet the corresponding preset safety standard, further judges an abnormal type of an abnormal detection item in the target detection item, and further obtains a spontaneous abnormality inside the cable or an external abnormality outside the cable, further analyzes and judges line abnormal data or corresponding external environmental factors in the operation process of the cable to obtain a corresponding judgment result, and generates a monitoring report, and performs classification analysis on the abnormal target detection item, thereby improving the monitoring effect in the operation process of the cable.

In one embodiment of this embodiment, as shown in fig. 2, the abnormal data includes cable loop data, and the step S106 is to acquire and analyze the corresponding abnormal data if the type of the abnormality is a spontaneous abnormality, and generating the corresponding inducing factor as a determination result includes the following steps:

s201, acquiring a corresponding circulation value according to cable circulation data;

s202, judging whether the circulation value exceeds a preset circulation threshold value or not;

s203, if the circulating current value exceeds a preset circulating current threshold value, acquiring a corresponding grounding mode;

s204, judging whether the grounding mode meets a preset grounding standard or not;

s205, if the grounding mode does not meet the preset grounding standard, acquiring and generating a corresponding induction factor according to the current connecting mode as a judgment result;

and S206, if the grounding mode meets the preset grounding standard, acquiring and analyzing cable wiring information, and generating a corresponding induction factor as a judgment result.

In practical application, the cable circulating data refers to high-voltage cable sheath circulating data; the circulation value refers to the circulation value in the cable sheath; the preset circulating current threshold refers to a normal circulating current threshold of the high-voltage cable sheath; the grounding mode is a mode that the cable line is connected and grounded in a cross mode; the preset grounding standard is a grounding standard when a cable line is grounded by adopting cross interconnection; the current connection mode refers to the current connection mode of the cable line.

It should be noted that the high-voltage cable generally adopts a grounding manner, such as a direct grounding at two ends of the metal sheath, a direct grounding at one end, a protection grounding at the other end, and a cross interconnection grounding of the metal sheath. In operation, cross interconnection transposition connection must be correct, interconnection transposition modes in two grounding boxes in one cross interconnection section must be consistent, and if the two cross interconnection transposition modes are opposite, circulation in a cable sheath will be large, which is equivalent to circulation in direct grounding, and the maximum load current value close to the cable core can be achieved.

For example, according to a preset grounding standard, the high-voltage cable is grounded by metal sheath cross interconnection, and the metal sheath cross interconnection transposition modes must be consistent, the current grounding mode of the high-voltage cable is detected to be cross interconnection grounding, but the interconnection transposition modes in two grounding boxes in one cross interconnection section are inconsistent, it can be determined that the grounding mode is not in accordance with the corresponding preset grounding standard, and a corresponding induction factor generated by the current metal sheath cross interconnection transposition mode is further obtained as a determination result.

For another example, if the grounding mode of the current high-voltage cable is cross-connection grounding and the interconnection transposition modes in the two grounding boxes in one cross-connection section are consistent, it can be determined that the grounding mode meets the corresponding preset grounding standard, and the wiring information of the cable is further acquired and analyzed.

According to the cable operation monitoring method provided by the embodiment, whether the corresponding circulating current value in the cable circulating current data exceeds the corresponding preset circulating current threshold value or not is judged, the safety of the cable circulating current data can be preliminarily determined, the grounding mode corresponding to the cable is further checked, the current connection mode which does not meet the preset grounding standard is obtained and serves as an inducing factor of the cable circulating current data abnormity, and therefore the monitoring efficiency of the grounding mode when the cable circulating current data is abnormal is improved.

In one implementation manner of this embodiment, as shown in fig. 3, if the grounding manner meets the preset grounding standard, the step S206 of acquiring and analyzing the cable connection information and generating the corresponding inducing factor as the determination result includes the following steps:

s301, if the grounding mode meets a preset grounding standard, acquiring a corresponding current wiring mode according to the cable wiring information;

s302, judging whether the current wiring mode meets the corresponding wiring standard or not;

s303, if the current wiring mode does not accord with the corresponding wiring standard, acquiring a corresponding abnormal wiring item;

s304, establishing a corresponding abnormal circulation model according to the abnormal wiring item;

s305, acquiring a corresponding target circulation value according to the abnormal circulation model;

s306, selecting the abnormal wiring item corresponding to the maximum target circulation value, and generating a corresponding induction factor as a judgment result.

In practical application, the current wiring mode refers to a wiring mode of a line when a cable runs; the wiring standard refers to a related wiring standard which is required to be met under the condition that the cable normally runs; the abnormal wiring item refers to an abnormal wiring item which does not meet the corresponding wiring standard in the current wiring mode of the cable line; the abnormal circulation model is a high-voltage cable sheath circulation model established according to the current abnormal wiring item; the target circulation value refers to the circulation value of the cable sheath in the abnormal circulation model.

In practical application, when the outgoing line of the insulating joint is connected with the coaxial cable, the circulation current of the metal sheath can be greatly increased due to wiring errors, in order to ensure the correctness of the cross circulation current transposition of the cable, the wiring of the cross interconnection box needs to be correct, and the power supply side and the load side of the coaxial cable from the three-phase insulating joint to the grounding box need to be ensured to be accurate, otherwise, the cross interconnection transposition can also be failed, and the circulation current of the metal sheath can be greatly increased.

For example, according to the standard of cable connection, the grounding method of the grounding circuit of the single-core cable line is as follows: the shielding midpoint is grounded: when the length of the line is 1000 to 1400 meters, a midpoint grounding mode is adopted, (1) the shielding layer is directly grounded at the middle position of the line, the shielding layers of the terminal heads at two ends of the cable are grounded through the sheath protector, and a direct through head is generally arranged at a middle grounding point; (2) An insulating joint is arranged at the middle point of the line, the insulating joint disconnects the cable shield, the two ends of the shield are grounded through the protective layer protector respectively, and the two cable terminal shields are directly grounded.

The length of the current cable line is 1200 meters through detection, a midpoint grounding mode is adopted, the shielding layer is directly grounded in the middle of the line, the shielding layer of the terminal head at one end of the cable is grounded through the protective layer protector, and a direct through head is not installed in the middle grounding point. And judging that the grounding abnormal item and the through head abnormal item of the cable end shield layer do not meet the corresponding wiring standard, wherein the grounding abnormal item and the through head abnormal item of the cable end shield layer are obtained, corresponding abnormal circulation simulation models are established according to the grounding abnormal item and the through head abnormal item of the cable end shield layer, target circulation values corresponding to the grounding abnormal item and the through head abnormal item of the cable end shield layer are respectively obtained, the target circulation value corresponding to the grounding abnormal item of the cable end shield layer is larger than the target circulation value corresponding to the through head abnormal item, and then the grounding abnormal item of the cable end shield layer is selected to generate a corresponding induction factor as a judgment result.

According to the cable operation monitoring method provided by the embodiment, on the premise that the grounding mode accords with the corresponding standard, the wiring mode of the cable is analyzed, the abnormal wiring item which does not accord with the wiring standard is obtained, the corresponding abnormal circulation model is further established according to the abnormal wiring item, the obtained corresponding target circulation value is evaluated, and the abnormal wiring item with the maximum target circulation value is selected as a main induction factor for causing the cable circulation abnormality, so that the monitoring and checking effect on the abnormal wiring item in the current wiring mode of the cable is improved.

In one embodiment of this embodiment, as shown in fig. 4, the step S106, namely, if the abnormality type is a spontaneous abnormality, acquiring and analyzing the corresponding abnormal data, and generating the corresponding inducing factor as the determination result, includes the following steps:

s401, acquiring corresponding material attribute data according to the connecting material data;

s402, judging whether the material attribute data meet a preset material standard;

s403, if the material attribute data meet the preset material standard, acquiring the working performance of the current connecting material;

s404, judging whether the working performance meets the cable running condition;

s405, if the working performance does not meet the cable running condition, obtaining the working performance and the connection position of the current connection material, and generating a corresponding induction factor as a judgment result.

In practical application, the connection material data refers to connection material data of the cable and the joint, the jumper, the grounding box and the like; the material attribute data refers to attribute information corresponding to the connecting material; the preset material standard refers to a material attribute standard specified and selected by connecting materials of the cable, the joint, the jumper wire, the grounding box and the like; the cable running condition refers to various performance conditions of the cable in normal running.

It should be noted that, since the cable is generally connected to the joint, jumper, ground box, etc. by using metals such as copper and aluminum, the circulation current is too large due to poor contact caused by different conductivity of the metal material.

For example, the respective standards for cable joints are available according to pre-set material standards: firm and reliable connection, high mechanical strength, corrosion resistance and oxidation resistance, and the material is selected from copper or aluminum.

The copper material selected by the cable joint is detected, and the cable joint is firm and reliable in connection, high in mechanical strength, corrosion-resistant and oxidation-resistant, so that the material attribute data of the cable joint can be judged to accord with the corresponding preset material standard.

And further according to the cable running condition, the cable joint needs to meet the conditions of small joint resistance and good electrical insulation performance, and the cable joint can be judged not to meet the corresponding cable running condition by detecting the poor electrical insulation performance of the cable joint, so that the poor electrical insulation performance and the connecting position of the cable joint on a cable line are obtained, and corresponding induction factors are generated to serve as judgment results.

According to the cable operation monitoring method provided by the embodiment, the insulation connection equipment influenced by the cable is obtained according to the oxidation data around the cable, whether the insulation performance of the insulation connection equipment meets the preset insulation standard or not is further judged, if not, the oxidized oxidation degree information of the insulation connection equipment is obtained, and a target oxidation model corresponding to the insulation performance under the current oxidation degree is generated, so that the monitoring and troubleshooting effects on the insulation connection equipment of the cable are improved.

In one embodiment of this embodiment, as shown in fig. 5, after step S106, that is, if the type of the abnormality is a spontaneous abnormality, acquiring and analyzing corresponding abnormal data, and generating a corresponding inducing factor as a determination result, the method further includes the following steps:

s501, acquiring a corresponding line part according to abnormal data;

s502, acquiring corresponding assembly information according to the line part;

and S503, acquiring a corresponding assembler directory in the assembly information as feedback information.

In practical application, the line part refers to a line part corresponding to the abnormal data of the cable line; the assembly information refers to the installation and assembly information of each part of the cable line; the name list of the assembly personnel refers to the information of the personnel for assembling each part of the cable line.

For example, if the material for installation and selection of the cable joint part in the area a is abnormal, all the installation and assembly information of the cable joint part in the area a is acquired, and it is further known from the installation and assembly information in the area a that the installation and selection work of the cable joint part is completed by wang, and directory information of the assembly personnel in wang is acquired as corresponding feedback information.

According to the cable operation monitoring method provided by the embodiment, when the cable line is spontaneously abnormal, the tracing effect on an assembler can be improved.

In one implementation of this embodiment, as shown in fig. 6, the environmental factors include oxidation data, and the step S107, if the abnormality type is an external abnormality, acquiring the corresponding environmental factor as a determination result includes the following steps:

s601, acquiring corresponding insulation connection equipment according to the oxidation data;

s602, judging whether the insulation performance of the insulation connection equipment meets a preset insulation standard or not;

s603, if the insulation performance of the insulation connection equipment does not meet the preset insulation standard, acquiring oxidation degree information corresponding to the insulation connection equipment;

s604, identifying the oxidation degree information according to a preset oxidation standard, and generating a corresponding target oxidation model as a judgment result.

In practical application, the oxidation data refers to the relevant oxidation data of the cable line; the insulation connection equipment refers to relevant insulation equipment which is required to be connected with the cable; the predetermined insulation standard refers to an insulation standard that the insulated connected device should meet.

It should be noted that the insulating material may have a change in physical structure and chemical properties under the action of moisture, acid, ozone, nitrogen oxide, etc. in the air, so that electrical and mechanical properties are degraded. For example, the transformer oil can generate organic acid in the air due to oxidation, so that the dielectric loss is increased, and simultaneously, solid precipitates are formed to block an oil passage, so that convection heat dissipation is influenced, and the insulation temperature is increased, so that the insulation performance is reduced.

For example, according to the preset insulation standard, the cross-linked polyethylene insulated polyvinyl chloride sheathed power cable can be obtained under the minimum value standard of the insulation resistance of a new cable, and the minimum value of the insulation resistance per kilometer of the length at 20 ℃ is as follows: rated voltage 6KV, conductor sections 16-35m not less than 1000M omega; the conductor sections 20 to 95M are not less than 750M omega; the conductor sections 120 to 240M are not less than 500M omega.

According to the oxidation data of the whole cable, the insulation performance of the crosslinked polyethylene insulated polyvinyl chloride sheathed power cable is further obtained by further obtaining the oxidation degree information corresponding to the crosslinked polyethylene insulated polyvinyl chloride sheathed power cable when the insulation resistance per kilometer is 450M Ω under the conditions of the temperature of 20 ℃, the rated voltage of 6KV and the conductor cross section 88M, and identifying the oxidation degree information according to the corresponding preset oxidation standard to generate a corresponding target oxidation model as a judgment result.

For another example, in the detected crosslinked polyethylene insulated polyvinyl chloride sheathed power cable, under the conditions that the temperature is 20 ℃, the rated voltage is 6KV, and the conductor cross section 88M is, the insulation resistance per kilometer of length is 850M Ω, and then the insulation resistance is recorded.

In one implementation of this embodiment, as shown in fig. 7, the environmental factors include temperature and humidity data, and the step S107, if the abnormality type is an external abnormality, acquiring the corresponding environmental factor as a determination result includes the following steps:

s701, judging whether the temperature and humidity data meet a preset environment standard or not;

s702, if the temperature and humidity data do not accord with the preset environmental standard, acquiring a corresponding line live condition;

s703, acquiring corresponding line characteristic information according to the line condition;

s704, judging whether the line characteristic information meets a preset damage standard;

s705, if the line characteristic information meets the preset damage standard, acquiring corresponding line damaged data;

and S706, identifying the damaged line data, and generating a corresponding target influence factor as a judgment result.

In practical application, the temperature and humidity data refers to temperature and humidity data around a cable line; the preset environmental standards refer to various environmental standards met by the cable line under safe operation; the line live refers to image information of a cable line; the preset damage standard is a standard that the cable line is damaged to cause abnormal operation of the cable; the line damage data refers to damage data of the current cable line.

It should be noted that many cross-connection grounds are laid, and due to the influence of rainy weather, water accumulation in the ground box is very likely to occur, which is likely to cause the ground at the cross-connection position, and is equivalent to direct grounding at two ends of the cable sheath, thereby causing the circulating current of the sheath to greatly rise.

If the performance of an insulating partition plate in the cable insulating joint is reduced or broken down, on one hand, cable sheaths on the left side and the right side of the cable insulating joint are communicated, a cross interconnection system is damaged, and the circulating current of the sheath in operation is increased; on the other hand, the increased circulating current causes the heating of the insulating partition plate in the insulating joint, and meanwhile, the long-term heating of the insulating partition plate also brings hidden troubles to the safe operation of the joint due to the poor heat dissipation environment in the joint.

On the other hand, with the increase of the operating life of the high-voltage cable and the influence of the extreme temperature and humidity environment, the outer sheath gradually ages, and the reduction of the insulation level may cause multipoint grounding of the outer sheath of the cable, so that the grounding mode of a grounding system is changed, and the sheath circulating current is increased.

For example, detecting that the current temperature and humidity data of the cable line does not accord with the corresponding preset environmental standard, acquiring image information of the corresponding cable line, identifying the image information to obtain a large amount of accumulated water in the cable grounding box, further acquiring characteristic information of the volume of the accumulated water, judging the characteristic information of the volume of the accumulated water to completely accord with the corresponding preset damage standard of the cable line, acquiring and identifying the grounding condition of the cable cross interconnection part and the condition that the cable line in the grounding box is submerged by the accumulated water, and generating corresponding accumulated water influence factors as a judgment result.

According to the cable operation monitoring method provided by the embodiment, the live line condition that the temperature and humidity data do not accord with the preset environmental standard is obtained, whether the characteristic information of the live line condition accords with the corresponding preset damage standard or not is further judged, and then the damaged line data which accord with the preset damage standard and the target influence factors which cause the damage of the line are obtained, so that the monitoring effect that the cable line is damaged by the outside is improved.

It should be noted that all the abnormal types occurring in the cable running process are included in the monitoring report, a corresponding target abnormal proportion is further calculated according to the induction factors in the spontaneous abnormality and the external abnormal environmental factors, the target abnormal proportion refers to the percentage of the induction factors and the environmental factors in the abnormal detection items, whether the respective target abnormal proportion meets the corresponding alarm standard or not is judged, if the respective target abnormal proportion meets the corresponding alarm standard, the abnormal type corresponding to the target abnormal proportion is classified into an alarm list and is alarmed, and a corresponding coping strategy is matched. For example, the abnormal type of the abnormal detection item is judged to be spontaneous abnormality through a preset monitoring standard, the target abnormal proportion of the abnormal wiring item, the abnormal working performance and the abnormal node mode in the spontaneous abnormality is respectively 60%, 30% and 10% through calculation, the target abnormal proportion of the abnormal wiring item meets the corresponding cable wiring abnormality alarm standard, relevant data of the abnormal wiring item is put into a warning list while the abnormal wiring item is alarmed, and a corresponding wiring abnormality processing strategy is matched, so that when the same condition occurs in the follow-up process, the abnormal wiring item can be alarmed directly, the corresponding coping strategy is preprocessed, and the monitoring efficiency of cable operation is improved.

The embodiment of the application discloses cable operation monitoring system, as shown in fig. 8, includes:

the first acquisition module 1 is used for acquiring an operation signal;

the analysis module 2 is used for analyzing the operation signals and generating corresponding target detection items;

the first judgment module 3 is used for judging whether the target detection meets the preset safety standard or not;

the second acquisition module 4 is used for acquiring the corresponding abnormal detection item if the preset safety standard is not met;

the second judging module 5 is used for judging the abnormal type of the abnormal detection item according to the preset monitoring standard;

the analysis module 6 is used for acquiring and analyzing corresponding abnormal data and generating corresponding induction factors as judgment results if the abnormal type is spontaneous abnormality;

the third obtaining module 7, if the abnormality type is external abnormality, the third obtaining module 7 is configured to obtain a corresponding environmental factor as a determination result;

and the generating module 8 is used for generating a corresponding monitoring report according to the judgment result.

The cable operation monitoring system provided by the embodiment of the application analyzes an operation signal acquired by a first acquisition module 1 in a cable operation process according to an analysis module 2 to generate a corresponding target detection item, immediately judges whether the target detection item meets a corresponding preset safety standard or not through a first judgment module 3, further can perform preliminary safety judgment on the target detection item, further judges an abnormal detection item acquired by a second acquisition module 4 in the target detection item through a second judgment module 5 if the target detection item does not meet the corresponding preset safety standard, further obtains a spontaneous abnormal type inside the cable or an external abnormal type outside the cable, further analyzes line abnormal data in the cable operation through an analysis module 6 and acquires a corresponding judgment result, acquires a judgment result corresponding to an external environmental factor through a third acquisition module 7, and finally summarizes all judgment results through a generation module 8 to generate a monitoring report, and classifies the abnormal target detection item, thereby improving the monitoring effect in the cable operation process.

It should be noted that the cable operation monitoring system provided in the embodiment of the present application further includes each module and/or corresponding sub-module corresponding to a logic function or a logic step of any one of the above cable operation monitoring methods, so as to achieve the same effect as each logic function or logic step, and details thereof are not repeated herein.

The embodiment of the application further discloses a terminal device, which comprises a memory, a processor and a computer instruction which is stored in the memory and can be run on the processor, wherein when the processor executes the computer instruction, any one of the cable running monitoring methods in the embodiments is adopted.

The terminal device may adopt a computer device such as a desktop computer, a notebook computer, or a cloud server, and includes but is not limited to a processor and a memory, for example, the terminal device may further include an input/output device, a network access device, a bus, and the like.

The processor may be a Central Processing Unit (CPU), and of course, according to an actual use situation, other general processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like may also be used, and the general processor may be a microprocessor or any conventional processor, and the present application does not limit the present invention.

The memory may be an internal storage unit of the terminal device, for example, a hard disk or a memory of the terminal device, or an external storage device of the terminal device, for example, a plug-in hard disk, a Smart Memory Card (SMC), a secure digital card (SD) or a flash memory card (FC) equipped on the terminal device, and the memory may also be a combination of the internal storage unit of the terminal device and the external storage device, and the memory is used for storing computer instructions and other instructions and data required by the terminal device, and the memory may also be used for temporarily storing data that has been output or will be output, which is not limited in this application.

The terminal device stores any one of the cable operation monitoring methods in the embodiments in a memory of the terminal device, and the method is loaded and executed on a processor of the terminal device, so that the terminal device is convenient to use.

The embodiment of the application also discloses a computer readable storage medium, and the computer readable storage medium stores computer instructions, wherein when the computer instructions are executed by a processor, any one of the above-mentioned cable operation monitoring methods is adopted.

The computer instructions may be stored in a computer readable medium, the computer instructions include computer instruction codes, the computer instruction codes may be in a source code form, an object code form, an executable file or some middleware form, and the computer readable medium includes any entity or device capable of carrying the computer instruction codes, a recording medium, a usb disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a Read Only Memory (ROM), a Random Access Memory (RAM), an electrical carrier signal, a telecommunication signal, a software distribution medium, and the like, and the computer readable medium includes but is not limited to the above components.

The cable operation monitoring method in any of the above embodiments is stored in a computer-readable storage medium through the computer-readable storage medium, and is loaded and executed on a processor, so as to facilitate storage and application of the method.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A cable operation monitoring method is characterized by comprising the following steps:

acquiring an operation signal;

2. The method for monitoring cable operation according to claim 1, wherein the abnormal data includes cable loop data, and if the type of the abnormality is a spontaneous abnormality, the method for acquiring and analyzing the corresponding abnormal data and generating the corresponding inducing factor as a judgment result includes the following steps:

judging whether the grounding mode meets a preset grounding standard or not;

if the grounding mode does not meet the preset grounding standard, acquiring and generating the corresponding induction factor according to the current connection mode as the judgment result;

3. The method for monitoring cable operation according to claim 2, wherein the step of acquiring and analyzing cable connection information and generating the corresponding inducing factor as the judgment result if the grounding mode meets a preset grounding standard comprises the following steps:

4. The cable operation monitoring method according to claim 1, wherein the abnormal data includes connection material data, and if the abnormal type is a spontaneous abnormality, the method acquires and analyzes corresponding abnormal data, and generates a corresponding inducing factor as a determination result, including the steps of:

5. The method for monitoring cable operation according to claim 1, wherein after acquiring and analyzing corresponding abnormal data and generating corresponding inducing factors as a determination result if the type of the abnormality is a spontaneous abnormality, the method further comprises the following steps:

acquiring a corresponding line part according to the abnormal data;

acquiring corresponding assembly information according to the line part;

6. The cable operation monitoring method according to claim 1, wherein the environmental factors include oxidation data, and if the abnormality type is an external abnormality, the step of acquiring the corresponding environmental factors as a judgment result includes:

acquiring corresponding insulation connection equipment according to the oxidation data;

if the insulation performance of the insulation connection equipment does not meet the preset insulation standard, acquiring oxidation degree information corresponding to the insulation connection equipment;

7. The cable operation monitoring method according to claim 1, wherein the environmental factors include temperature and humidity data, and if the abnormality type is an external abnormality, the step of acquiring the corresponding environmental factors as a judgment result includes:

if the temperature and humidity data do not accord with the preset environment standard, acquiring a corresponding line condition;

acquiring corresponding line characteristic information according to the line condition;

8. A cable run monitoring system, comprising:

the first acquisition module (1) is used for acquiring an operation signal;

the analysis module (2) is used for analyzing the operation signal and generating a corresponding target detection item;

the first judgment module (3) is used for judging whether the target detection meets the preset safety standard or not;

the second acquisition module (4) is used for acquiring a corresponding abnormal detection item if the preset safety standard is not met;

the second judging module (5) is used for judging the abnormal type of the abnormal detection item according to a preset monitoring standard;

the analysis module (6) is used for acquiring and analyzing corresponding abnormal data if the abnormal data is spontaneous abnormality, and generating corresponding induction factors as judgment results;

the third acquisition module (7) is used for acquiring corresponding environmental factors as judgment results if the external abnormality occurs;

and the generating module (8) is used for generating a corresponding monitoring report according to the judgment result.

9. A terminal device comprising a memory and a processor, wherein the memory stores computer instructions capable of running on the processor, and the processor when loading and executing the computer instructions employs the cable operation monitoring method according to any one of claims 1 to 7.

10. A computer readable storage medium having computer instructions stored thereon, wherein the computer instructions, when loaded and executed by a processor, implement the cable operation monitoring method according to any one of claims 1 to 7.