CN109918815A - Power cable external force damage prevention detection method and system - Google Patents
Power cable external force damage prevention detection method and system Download PDFInfo
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- CN109918815A CN109918815A CN201910193279.2A CN201910193279A CN109918815A CN 109918815 A CN109918815 A CN 109918815A CN 201910193279 A CN201910193279 A CN 201910193279A CN 109918815 A CN109918815 A CN 109918815A
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Abstract
The present invention relates to a kind of power cable external force damage prevention detection methods, the following steps are included: step 1: the safe distance between power cable and municipal pipeline of all categories or building/structures based on Code for comprehensive planning of urban engineering pipeline defined constructs power cable crash analysis rule base by target of power cable；Step 2: obtaining the basic information of power cable, by classification judge municipal pipeline or building/between structures and power cable actual range whether with power cable crash analysis rule storehouse matching, to find with the unmatched power cable of power cable crash analysis rule base partially or fully and as the power cable object for being likely to occur outer broken hidden danger, and then export the information for being likely to occur the power cable object of outer broken hidden danger.The present invention quickly be able to can detect to the outer broken situation that power cable is likely to occur and output information reminds related personnel, consequently facilitating construction adjustment.
Description
Technical field
The invention belongs to power cable operational safety technical fields, and in particular to a kind of power cable external force damage prevention detection method
And system.
Background technique
Power cable fault is the most common failure in Operation of Electric Systems, and power cable fault can be to Operation of Electric Systems
Safety and reliability cause serious negative effect.Power supply enterprise is the safe operation for guaranteeing local transmission line of electricity,
Periodically patrol officer is sent to check cable run and equipment, to scent a hidden danger, is handled in time, patrol worker is gone bail for
The safety of power supply has been demonstrate,proved, and administrative staff need emphasis to reinforce the management intensity to work power cable inspection.
However, the underground space various municipal pipeline information in current city isolate, not shared, precision is inadequate, this, which becomes, controls
Manage the bottleneck of broken problem outside power cable.Meanwhile as the storage of cable run and increment increasingly increase, by artificial memory's
Line walking mode more exposes limitation, and cable outsourcing tour path supervise and examine means are limited, are difficult the tour to cable outsourcing
Quality is managed in real time.It is therefore desirable to which a kind of can quickly detect the outer broken situation that power cable is likely to occur
Method.
Summary of the invention
Quickly the outer broken situation that power cable is likely to occur can be detected the object of the present invention is to provide one kind
Method.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of power cable external force damage prevention detection method, comprising the following steps:
Step 1: power cable and municipal pipeline of all categories based on Code for comprehensive planning of urban engineering pipeline defined
Or the safe distance between building/structures, power cable crash analysis rule base is constructed by target of power cable；
Step 2: obtain the basic information of power cable, by classification judge the municipal pipeline or building/structures with
Actual range between the power cable whether with the power cable crash analysis rule storehouse matching, thus find with it is described
The unmatched power cable of power cable crash analysis rule base partially or fully and as being likely to occur outer broken hidden danger
Power cable object, and then export be likely to occur outer broken hidden danger power cable object information.
In the step 2, after the basic information for obtaining power cable to be detected, by classification for the municipal pipeline or
Building/structures execute following steps:
Step 2-1: the municipal pipeline or building/structures for determining a classification are as present analysis object；
Step 2-2: the power cable and the municipal pipeline or building as present analysis object/construct are calculated
Actual range between object, the actual range include horizontal actual range and vertical actual range, judge calculated reality
Distance whether with the power cable crash analysis rule storehouse matching, to find the power cable pair for being likely to occur outer broken hidden danger
As and export its information.
In the step 2-2, the level between the power cable and the municipal pipeline or building/structures is practical
Distance includes using the calculated preliminary horizontal distance of bounding box method and using the calculated net level length of projective transform method from institute
Stating the vertical actual range between power cable and the municipal pipeline or building/structures includes being calculated using bounding box method
Preliminary vertical range out and using the calculated vertical clearance of projective transform method from；
Then in the step 2-2, the preliminary horizontal distance and the preliminary vertical range and electric power electricity are first judged
Whether cable crash analysis rule base matches, if mismatch, further judge the net level length from the vertical clearance from
Whether matched with the power cable crash analysis rule base, is likely to occur the power cable object of outer broken hidden danger simultaneously to find
Export its information.
In the step 2-2, judge that the preliminary horizontal distance and the preliminary vertical range are touched with the power cable
When hitting rule libraries and whether matching, first judge whether are the preliminary horizontal distance and the power cable crash analysis rule base
Matching if mismatching, then judges whether the preliminary vertical range matches with the power cable crash analysis rule base, if not
Matching, further judges that the net level length is from the power cable crash analysis rule base from the vertical clearance
No matching.
For calculate the bounding box method of the preliminary horizontal distance or the vertical preliminary distance using axis-aligned bounding boxes,
Oriented bounding box method, discrete direction polyhedron bounding box method or space-time bounding box method.
For the power cable using axis-aligned bounding boxes calculate the preliminary horizontal distance and it is described it is preliminary vertically away from
From.
In the step 2, the basic information of acquired power cable to be detected includes its type, embedding manner.
A kind of power cable external force damage prevention detection system, comprising:
Cable operation platform, the cable operation platform is for merging municipal pipeline or building/structures of all categories
And the information of power cable, and the power cable based on Code for comprehensive planning of urban engineering pipeline defined and city of all categories
Safe distance between political affairs pipeline or building/structures constructs power cable crash analysis rule by target of power cable
Library；
Analytical unit, the analytical unit are used to obtain the basic information of power cable, judge that the municipal administration is managed by classification
Actual range between line or building/structures and the power cable whether with the power cable crash analysis rule base
Matching, thus find with the unmatched power cable of power cable crash analysis rule base partially or fully and made
For the power cable object for being likely to occur outer broken hidden danger, and then export the letter for being likely to occur the power cable object of outer broken hidden danger
Breath.
Due to the above technical solutions, the present invention has the following advantages over the prior art: the present invention can
Quickly the outer broken situation that power cable is likely to occur detect and output information reminds related personnel, consequently facilitating construction is adjusted
It is whole.
Detailed description of the invention
Attached drawing 1 is that three-dimensional power cable is laid with schematic diagram.
Attached drawing 2 is that three-dimensional tube linear distance calculates schematic diagram.
Attached drawing 3 is three dimensional space coordinate schematic diagram.
Attached drawing 4 is the flow diagram of power cable external force damage prevention detection method.
Specific embodiment
The invention will be further described for embodiment shown in reference to the accompanying drawing.
A kind of embodiment one: power cable external force damage prevention detection method, comprising the following steps:
Step 1: power cable and municipal pipeline of all categories based on Code for comprehensive planning of urban engineering pipeline defined
Or the safe distance between building/structures, power cable crash analysis rule base is constructed by target of power cable.
The description of 1.1 power cable pipe installation standards
Subsurface three-dimensional power cable is made of the part such as cable shaft, cable, cable passage, cable channel _ piping lane, wherein electricity
Cable is embedded in inside cable passage, is cable shaft between cable passage, as shown in Figure 1,1. refer to cable shaft in Fig. 1 (a),
2. referring to cable pipeline, in Fig. 1 (b), 1. refer to cable passage.
Safe distance between power cable and other municipal pipelines, building/structures is divided into net level length and vertical
Clear distance.
Net level length (horizontal clearance): between utilities pipeline outer wall (contain protective layer) or pipeline external wall with
Horizontal distance between buildings or structures outer edge (see Table 1 for details).
Vertical clearance (vertical clearance): between engineering line outer wall (contain protective layer) or utilities pipeline outer wall with
Vertical range between buildings or structures outer edge (see Table 2 for details).
Minimum level clear distance (m) between 1 power cable of table other pipelines, building/structures
2 power cable of table and other underground utilities minimum vertical clear distances (m)
The above safe distance is provided in Code for comprehensive planning of urban engineering pipeline.
The building of 1.2 power cable crash analysis rule bases
Based on the safe distance between power cable and other municipal pipelines, building/structures, (buried with power cable
If mode is cable ditch) it is target making three-dimensional power cable crash analysis standard rule library, as shown in table 3.
Collision_Rule=Powercable, Pipetype, Laidtype, Distancetype,
Distancevalue,Otherconditions}(1)
Powercable indicates that power cable, Pipetype indicate pipeline type in formula (1), and Laidtype indicates pipeline
Embedding manner (being not null value regardless of embedding manner), Distancevalue refers to calculating gauged distance,
Otherconditions refers to other supplementary conditions, and default is null value.
The regular expression model is formulated according to Code for comprehensive planning of urban engineering pipeline, and distinguishing for rule is not only increased
Knowledge and magnanimity, and versatility is stronger, suitable for varying environment, the pipeline collision detection of different embedding manners, be easy to rule base into
Row modification and maintenance.As shown in table 3, by taking power cable (cable ditch) as an example, power cable crash analysis rule base is constructed.
Three-dimensional power cable (cable ditch) the crash analysis rule base of table 3
Table 3 only lists net level length and the detection of part vertical clearance between power cable (cable ditch) and other pipelines
Standard rule can also construct corresponding rule base with other various pipelines, building/structures, just not list one by one here.
Step 2: obtaining the basic information of power cable, judge municipal pipeline or building/structures and electric power by classification
Whether actual range between cable the municipal pipeline or is built with power cable crash analysis rule storehouse matching if mismatching
Building object/structures may collide with power cable, to find and the unmatched electricity of power cable crash analysis rule base
Power cable partially or fully and as the power cable object for being likely to occur outer broken hidden danger, and then export be likely to occur it is outer
The information of the power cable object of broken hidden danger.
In the step, matching judgment is carried out one by one for several power cables to be detected；And it is directed to one section of power cable
When, then judge that all kinds of municipal pipelines or building/structures are judged by classification.
Specifically, in step 2, after the basic information for obtaining power cable to be detected, by classification for municipal pipeline or
Building/structures execute following steps:
Step 2-1: the municipal pipeline or building/structures for determining a classification are as present analysis object；
Step 2-2: power cable is calculated and as between the municipal pipeline or building/structures of present analysis object
Actual range, actual range include horizontal actual range and vertical actual range, judge calculated actual range whether with electricity
Power cable crash analysis rule storehouse matching, to find the power cable object for being likely to occur outer broken hidden danger and export its information.
In the step, the basic information of acquired power cable to be detected includes its type, embedding manner
In the step, the horizontal actual range between power cable and municipal pipeline or building/structures includes using
The calculated preliminary horizontal distance of bounding box method and the use calculated net level length of projective transform method are from power cable and municipal administration
Vertical actual range between pipeline or building/structures includes using the calculated preliminary vertical range of bounding box method and adopting
With the calculated vertical clearance of projective transform method from.Wherein, preliminary horizontal distance and preliminary vertical range judge for rough, and
Net level length from vertical clearance from then for accurately judge.
Collision detection algorithm based on bounding box is most widely used, for calculating preliminary horizontal distance or vertical just step pitch
From bounding box method use axis-aligned bounding boxes, oriented bounding box method, discrete direction polyhedron bounding box method or space-time bounding box
Method etc..In the present embodiment using axis-aligned bounding boxes calculate preliminary horizontal distance and preliminary vertical range such.The core of algorithm
Thought is that the geometric object for needing to carry out collision detection is surrounded using the bigger simple geometry body of volume, and when collision detection only needs
Judge whether bounding box collides, since structure is simple, greatly accelerates the speed of collision detection.Then in step 2-2, first sentence
Whether preliminary horizontal distance of breaking and preliminary vertical range match with power cable crash analysis rule base, if mismatching, then into one
Whether step determined level clear distance and vertical clearance match from power cable crash analysis rule base, are likely to occur to find
The power cable object of outer broken hidden danger simultaneously exports its information.
By analytical table 1, table 2 it is found that net level length be more than or equal to vertical interval, and underground power cable x, y-coordinate and
Area span is relatively large, and its variation in elevation (z coordinate) is relatively small, from detection angle for, divide first
Net level length is analysed, if net level length and rule base mismatch, determines that line layout is problematic, then needs to determine vertical net
Away from；If net level length symbol and regular storehouse matching, then judge vertical clearance whether with regular storehouse matching.Therefore judgement it is preliminary horizontal away from
When from whether matching with preliminary vertical range with power cable crash analysis rule base, preliminary horizontal distance and electric power electricity are first judged
Whether cable crash analysis rule base matches, if mismatching, then judges preliminary vertical range and power cable crash analysis rule base
Whether match, if mismatching, further determined level clear distance and vertical clearance from power cable crash analysis rule base
Whether match.
In order to determine the specific laying problem (obtaining specific distance value) between pipeline, by preliminary horizontal distance and just
Step vertical range judge there may be on the basis of problem, also need to the net level length between pipeline from and vertical clearance from all
Specifically calculated, can navigate in this way line layout particular problem where.
In three dimensions, the distance between two articles can be calculated directly according to range formula, still, two articles it
Between horizontal distance and the calculating of vertical range need the problems such as considering inclination angle.For 2 (a), between two pipelines away from
From can be obtained by calculating the distance between pipeline center line because pipeline bore be it is cylindrical, between pipeline
Distance can be calculated according to formula (2).And between cylindrical pipeline and body shape structures (Fig. 2 (b)) and body shape is constructed
The calculating of the distance between object and body shape structures (Fig. 2 (c)) is just more complicated, just no longer illustrates here.
D=dl-(r1+r2) (2)
D refers to the minimum range between two three-dimensional pipeline sections, d in formula (2)lRefer to the minimum range between three-dimensional pipeline section center line,
r1、r2Respectively refer to pipeline section L1、L2Radius length.
This programme uses dimensionality reduction thought, minimum horizontal distance in three-dimensional space between two pipelines (net level length from) and most
Small vertical range (vertical clearance from) can be used projective transform method and be calculated.
Usually tri- coordinate planes (Fig. 3) of three-dimensional system of coordinate OXYZ are divided into engineering: the face H (face XOY), the face V (face XOZ)
With the face W (face YOZ).Projection of the 3-D graphic on the face V is known as main view, is known as top view, on the face W in the projection on the face H
Projection be known as side view.
In three dimensional space coordinate, horizontal distance calculating is first to carry out two three-dimensional pipeline sections just to XOY plane (face H) respectively
Projection is taken the photograph, minimum spacing between two perspective planes is then calculated, projective transformation matrix is as follows:
In three dimensional space coordinate, vertical range calculating is first to carry out two three-dimensional pipeline sections just to XOZ plane (face V) respectively
Projection is penetrated, then the minimum range between calculation amount perspective plane, projective transformation matrix are as follows:
Based on the projective transform method, the perspective plane of pipeline is respectively obtained after projective transformation, then two perspective planes is carried out most short
The calculating (Fig. 2 (d)) of distance.The calculating of net level length is to project to target pipeline on horizontal plane, then calculates two and throws
Minimum distance d between shadow faceh.The calculating of vertical clearance is to project to target pipeline on vertical plane, then calculates two
Minimum distance d between perspective planev。
To sum up, as shown in Fig. 4 to the process of power cable progress external force damage prevention detection method:
1) therefore the strategy of crash analysis is obtained from pipeline dataset first using the method for the detection of pipeline classification one by one
Take the data of some factor kind O as the object set for carrying out crash analysis with power cable.
2) bounding box of power cable pipeline section pair is obtained (due to power cable pipeline section comparison rule, herein using axial packet
Enclose box method), and collision detection, the pipeline section that acquisition and pipeline section may collide are carried out based on power cable crash analysis rule base
Conflicts(S)。
3) each pipeline section element O in Conflicts (S) is traversedi, power cable pipeline section S is calculated separately using projective transformation
With OiIt is horizontal through clear distance and vertical clearance from.
4) according to this power cable pipeline section and pipeline section OiNet level length from, vertical clearance from power cable crash analysis
Rule base carries out matching judgment, by unmatched pipeline section and corresponding net level length from or vertical clearance from output.
Other power cable pipeline sections are traversed, step 2), step 3) are repeated, until all power cable pipeline sections traversal terminates.
5) after the detection of current line class data, other pipeline class data is read, step 2)~step 5) are repeated, to electricity
Power cable pipeline section and all kinds of pipelines carry out crash analysis.
Finally crash analysis is exported as a result, in order to adjustment of constructing.
Experiment
Using the underground power cable of Suzhou City industrial park as experimental data, complete power cable about 500, other
Pipeline includes 7 classes such as rainwater pipeline, sewage pipeline, water-supply line, heating pipeline, burning line, telecommunication line, regeneration water pipeline
Pipeline.Crash analysis is carried out to detection zone using context of methods, the results are shown in Table 4 for crash analysis, output example such as 5 institute of table
Show.
4 crash analysis result of table
5 testing result output example of table
Above-mentioned power cable external force damage prevention detection can realize that the electric power is electric by a kind of power cable external force damage prevention detection system
Cable external force damage prevention detection system includes: cable operation platform and analytical unit.Cable operation platform is for merging municipal administration of all categories
The information of pipeline or building/structures and power cable, and based on Code for comprehensive planning of urban engineering pipeline defined
Safe distance between power cable and municipal pipeline of all categories or building/structures is constructed by target of power cable
Power cable crash analysis rule base.Analytical unit is used to obtain the basic information of power cable, judges municipal pipeline by classification
Or the actual range of building/between structures and power cable whether with power cable crash analysis rule storehouse matching, thus
It finds with the unmatched power cable of power cable crash analysis rule base partially or fully and as outside being likely to occur
The power cable object of broken hidden danger, and then export the information for being likely to occur the power cable object of outer broken hidden danger.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of power cable external force damage prevention detection method, it is characterised in that: the power cable external force damage prevention method includes following step
It is rapid:
Step 1: power cable based on Code for comprehensive planning of urban engineering pipeline defined and municipal pipeline of all categories are built
The safe distance between object/structures is built, constructs power cable crash analysis rule base by target of power cable；
Step 2: obtain the basic information of power cable, by classification judge the municipal pipeline or building/structures with it is described
Actual range between power cable whether with the power cable crash analysis rule storehouse matching, to find and the electric power
The unmatched power cable of cable crash analysis rule base partially or fully and as the electricity for being likely to occur outer broken hidden danger
Power cable object, and then export the information for being likely to occur the power cable object of outer broken hidden danger.
2. power cable external force damage prevention detection method according to claim 1, it is characterised in that: in the step 2, obtain to
After the basic information of the power cable of detection, following steps are executed for the municipal pipeline or building/structures by classification:
Step 2-1: the municipal pipeline or building/structures for determining a classification are as present analysis object；
Step 2-2: calculate the power cable with as present analysis object the municipal pipeline or building/structures it
Between actual range, the actual range includes horizontal actual range and vertical actual range, judges calculated actual range
Whether with the power cable crash analysis rule storehouse matching, be likely to occur the power cable object of outer broken hidden danger simultaneously to find
Export its information.
3. power cable external force damage prevention detection method according to claim 2, it is characterised in that: described in the step 2-2
Horizontal actual range between power cable and the municipal pipeline or building/structures includes being calculated using bounding box method
Preliminary horizontal distance and using the calculated net level length of projective transform method from, the power cable and the municipal pipeline or
Vertical actual range between building/structures includes using the calculated preliminary vertical range of bounding box method and using projection
The calculated vertical clearance of converter technique from；
Then in the step 2-2, first judge that the preliminary horizontal distance and the preliminary vertical range are touched with the power cable
Hit whether rule libraries match, if mismatch, further judge the net level length from the vertical clearance from institute
State whether power cable crash analysis rule base matches, to find the power cable object for being likely to occur outer broken hidden danger and export
Its information.
4. power cable external force damage prevention detection method according to claim 3, it is characterised in that: in the step 2-2, judgement
When whether the preliminary horizontal distance and the preliminary vertical range match with the power cable crash analysis rule base, first sentence
Whether the preliminary horizontal distance of breaking matches with the power cable crash analysis rule base, if mismatching, then judges described first
Whether step vertical range matches with the power cable crash analysis rule base, if mismatching, further judges the level
Whether clear distance and the vertical clearance match from the power cable crash analysis rule base.
5. power cable external force damage prevention detection method according to claim 3, it is characterised in that: for calculating the preliminary water
The bounding box method of flat distance or the vertical preliminary distance uses axis-aligned bounding boxes, oriented bounding box method, discrete direction multi-panel
Body bounding box method or space-time bounding box method.
6. power cable external force damage prevention detection method according to claim 5, it is characterised in that: adopted for the power cable
The preliminary horizontal distance and the preliminary vertical range are calculated with axis-aligned bounding boxes.
7. power cable external force damage prevention detection method according to claim 2, it is characterised in that: acquired in the step 2
The basic information of power cable to be detected include its type, embedding manner.
8. a kind of power cable external force damage prevention detection system, it is characterised in that: the power cable external force damage prevention detection system includes:
Cable operation platform, the cable operation platform be used to merge municipal pipeline or building/structures of all categories and
The information of power cable, and the power cable based on Code for comprehensive planning of urban engineering pipeline defined and municipal administration of all categories are managed
Safe distance between line or building/structures constructs power cable crash analysis rule base by target of power cable；
Analytical unit, the analytical unit are used to obtain the basic information of power cable, by classification judge the municipal pipeline or
Actual range between building/structures and the power cable whether with the power cable crash analysis rule base
Match, thus find with the unmatched power cable of power cable crash analysis rule base partially or fully and as
It is likely to occur the power cable object of outer broken hidden danger, and then exports the information for being likely to occur the power cable object of outer broken hidden danger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910193279.2A CN109918815A (en) | 2019-03-14 | 2019-03-14 | Power cable external force damage prevention detection method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910193279.2A CN109918815A (en) | 2019-03-14 | 2019-03-14 | Power cable external force damage prevention detection method and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113205430A (en) * | 2021-04-30 | 2021-08-03 | 国网上海市电力公司 | Detection method for preventing external damage of power cable |
| CN114491895A (en) * | 2022-04-01 | 2022-05-13 | 广东电网有限责任公司东莞供电局 | Cable laying stress analysis method and device |
| CN117055739A (en) * | 2023-10-11 | 2023-11-14 | 深圳优立全息科技有限公司 | Holographic equipment interaction method, device, equipment and storage medium |
-
2019
- 2019-03-14 CN CN201910193279.2A patent/CN109918815A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113205430A (en) * | 2021-04-30 | 2021-08-03 | 国网上海市电力公司 | Detection method for preventing external damage of power cable |
| CN114491895A (en) * | 2022-04-01 | 2022-05-13 | 广东电网有限责任公司东莞供电局 | Cable laying stress analysis method and device |
| CN114491895B (en) * | 2022-04-01 | 2022-08-30 | 广东电网有限责任公司东莞供电局 | Cable laying stress analysis method and device |
| CN117055739A (en) * | 2023-10-11 | 2023-11-14 | 深圳优立全息科技有限公司 | Holographic equipment interaction method, device, equipment and storage medium |
| CN117055739B (en) * | 2023-10-11 | 2024-01-26 | 深圳优立全息科技有限公司 | Holographic equipment interaction method, device, equipment and storage medium |
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Effective date of registration: 20200715 Address after: 215004 No. 555 labour Road, Jiangsu, Suzhou Applicant after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. SUZHOU POWER SUPPLY BRANCH Applicant after: SUZHOU INDUSTRIAL PARK GRID INFORMATION TECHNOLOGY Co.,Ltd. Address before: 215004 No. 555 labour Road, Jiangsu, Suzhou Applicant before: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. SUZHOU POWER SUPPLY BRANCH Applicant before: SUZHOU INDUSTRIAL PARK GRID INFORMATION TECHNOLOGY Co.,Ltd. Applicant before: SUZHOU INDUSTRIAL PARK SURVEYING MAPPING AND GEOINFORMATION Co.,Ltd. |
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