CN105550256A - Power grid planning oriented automatic diluting method of geographical wiring diagram - Google Patents
Power grid planning oriented automatic diluting method of geographical wiring diagram Download PDFInfo
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- CN105550256A CN105550256A CN201510901827.4A CN201510901827A CN105550256A CN 105550256 A CN105550256 A CN 105550256A CN 201510901827 A CN201510901827 A CN 201510901827A CN 105550256 A CN105550256 A CN 105550256A
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- 238000000034 method Methods 0.000 title claims abstract description 26
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Abstract
The invention provides a power grid planning oriented automatic diluting method of a geographical wiring diagram. The power grid planning oriented automatic diluting method comprises the following steps: 1) data preparation: according to an area range or an attribute condition, comparing the spatial range or the attribute contents of lines to screen the lines which meet the condition, and caching the electric transmission lines into a list; 2) setting a decision rule of feature points; 3) setting a line diluting factor d; and 4) storing a diluted coordinate point between every two feature points into one coordinate point array according to a line trend, forming a new line according to the line trend after the line finishes diluting, and updating the coordinate point sequence of the original line to form a diluted power grid wiring diagram. Before the power grid wiring diagram is subjected to diluting processing, a feature point constraint condition is set for the power grid wiring diagram, the diluting processing which considers the feature points is carried out, the required feature points and lines are retained, a data size is reduced to a largest extent, and the power grid planning oriented automatic diluting method has the advantages of being high in diluting speed and high in efficiency.
Description
Technical field
The present invention relates to power electronics areas of information technology, specifically a kind of automatic vacuate method of geographical wiring diagram towards Electric Power Network Planning.
Background technology
Geographical wiring diagram is the basic data of administration of power networks and Electric Power Network Planning, and the drafting of geographical wiring diagram is an arduousness and the work of complexity, its conventional drafting method take general map as background, AutoCAD Software on Drawing is used to go out geographic position, the path of power circuit and their mutual annexations of generating plant, transformer station.
Traditional evacuating algorithm is the linear vacuate carried out according to geometric algorithm, and the evacuating algorithm that GIS software uses is normally towards the overall situation, processes all data of vacuate that need.But the unique point that traditional evacuating algorithm can not exist in identification data, the data of some key are deleted, cause loss of learning.
Summary of the invention
The invention provides a kind of automatic vacuate method of geographical wiring diagram towards Electric Power Network Planning, the Redundant Control point in circuit can be reduced greatly, simplify circuit, reduce data volume to greatest extent, and reduce data redundancy when transmission of information, and the performance of key message can be made more outstanding, automatic vacuate speed is fast, and efficiency is high.
The automatic vacuate method of geographical wiring diagram towards Electric Power Network Planning, is characterized in that comprising the steps:
Step one, data encasement: by regional extent or attribute conditions, screened the circuit satisfied condition by the spatial dimension of comparison circuit or property content, and be cached in list by these transmission lines of electricity;
Step 2, the decision rule of setting unique point: by setting minimum detection range r, for the vertical range of the transformer station to circuit that judge every bar circuit both sides in transmission line of electricity list, if hang down apart from being less than r, then judge that there is a unique point at this place, judge on this basis to be set to the center of circle so that substation is in place, with r be radius circular scope in whether there is the geometric coordinate point of circuit, if existed, then this geometric coordinate point is unique point, if there is no, then calculate the intersection point of transformer station to circuit, getting intersection point point is unique point, according to the trend of circuit, the head and the tail point of circuit and unique point do not carry out vacuate, on circuit, remaining geometric coordinate point all can fall by vacuate,
Step 3, setting circuit vacuate factor d, vacuate factor d is a parameter of control line vacuate density degree, its value represents the maximum deflection difference value between the circuit coordinate point after vacuate and former center line, line segment in circuit after every 2 unique points connection forms the center line of whole circuit, the vertical range of all non-unique points and center line on computational scheme, and determine the maximum normal distance dmax between every 2 unique points, with dmax compared with vacuate factor d given in advance: if dmax<d, then the point between these 2 unique points is all cast out; If dmax >=d, the reference mark retaining dmax corresponding forms new unique point, and with this point for separation, circuit is cut to two parts, reuses the method, until the equal <d of all dmax, the i.e. vacuate of complete paired transmission line to these two parts;
Coordinate points between step 4, every 2 unique points after vacuate is stored in a coordinate points array according to line alignment, a new circuit is formed according to line alignment after circuit completes vacuate, and upgrade the coordinate point sequence of original circuit, form the electric network wiring scheme after vacuate.
As above towards the automatic vacuate method of geographical wiring diagram of Electric Power Network Planning, it is characterized in that: the regional extent in step one comprises administrative region or electric pressure specifies the transmission line of electricity scope needing to carry out vacuate process.
The present invention can arrange several feature points constraint conditions towards the automatic evacuating algorithm of geographical wiring diagram of Electric Power Network Planning on electric network wiring scheme, the unique point needed for user can be made to remain after vacuate, simultaneously after vacuate process, the Redundant Control point in circuit can be greatly reduced, simplify circuit, thus reduce data volume.Decrease data redundancy when transmission of information, the performance of key message can be made more outstanding, make performing content more short and sweet.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the present invention towards the automatic vacuate method of geographical wiring diagram of Electric Power Network Planning;
Schematic diagram when Fig. 2 is unique point of the present invention judgement;
Fig. 3 is center line of the present invention and evacuating algorithm;
Fig. 4 is the geographical wiring diagram before vacuate;
Geographical wiring diagram after Fig. 5 uses traditional vacuate method to carry out vacuate;
Fig. 6 is the geographical wiring diagram after using vacuate method of the present invention to carry out vacuate.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.
Figure 1 shows that the schematic flow sheet of the present invention towards the automatic vacuate method of geographical wiring diagram of Electric Power Network Planning, the automatic vacuate method of the described geographical wiring diagram towards Electric Power Network Planning comprises the steps:
Step one, data encasement: by regional extent or attribute conditions, comprise administrative region, electric pressure etc. and specify the transmission line of electricity scope needing to carry out vacuate process, by the spatial dimension of comparison circuit or property content, the circuit satisfied condition is screened, and these transmission lines of electricity are cached in list.
Step 2, the decision rule of setting unique point: as shown in Figure 2, by setting minimum detection range r, for the vertical range of the transformer station's (point) to circuit that judge every bar circuit both sides in transmission line of electricity list, if hang down apart from being less than r, then judge that there is a unique point at this place, judge on this basis to be set to the center of circle so that substation is in place, with r be radius circular scope in whether there is the geometric coordinate point of circuit, if existed, then this geometric coordinate point is unique point, if there is no, then calculate the intersection point of transformer station to circuit, getting intersection point point is unique point, according to the trend of circuit, the head and the tail point of circuit and unique point do not carry out vacuate, on circuit, remaining geometric coordinate point all can fall by vacuate,
Step 3, setting circuit vacuate factor d.The vacuate factor is a parameter of control line vacuate density degree, its value represents the maximum deflection difference value between the circuit coordinate point after vacuate and former center line, line segment in circuit after every 2 unique points connection forms the center line (as shown in Figure 3) of whole circuit, the vertical range of all non-unique points and center line on computational scheme, and determine the maximum normal distance dmax between every 2 unique points, with dmax compared with vacuate factor d given in advance: if dmax<d, then the point between these 2 unique points is all cast out; If dmax >=d, the reference mark retaining dmax corresponding forms new unique point, and with this point for separation, circuit is cut to two parts, reuses the method, until the equal <d of all dmax, the i.e. vacuate of complete paired transmission line to these two parts.
Coordinate points between step 4, every 2 unique points after vacuate is stored in a coordinate points array according to line alignment, a new circuit is formed according to line alignment after circuit completes vacuate, and upgrade the coordinate point sequence of original circuit, electric network wiring scheme more short and sweet after forming vacuate.
Before carrying out vacuate to the geographical wiring diagram of electrical network, flex point is many, emphasis is not outstanding and data volume is large, and geographical wiring diagram as shown in Figure 4.
Traditional vacuate belongs to linear vacuate, and the result figure utilizing such vacuate method to carry out vacuate can to obtain as shown in Figure 5, can see from figure is, the some disconnection that power network line and transformer station etc. must retain after carrying out vacuate, causes loss of learning.
After utilizing the automatic evacuating algorithm of the geographical wiring diagram towards Electric Power Network Planning invented to carry out vacuate to wiring diagram herein, result as shown in Figure 6.By arranging the unique point rule constrains such as dotted line on electric network wiring scheme, the unique point needed for user being remained after vacuate, decreases data volume to greatest extent, make wiring diagram more intuitively readable.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (2)
1., towards the automatic vacuate method of geographical wiring diagram of Electric Power Network Planning, it is characterized in that comprising the steps:
Step one, data encasement: by regional extent or attribute conditions, screened the circuit satisfied condition by the spatial dimension of comparison circuit or property content, and be cached in list by these transmission lines of electricity;
Step 2, the decision rule of setting unique point: by setting minimum detection range r, for the vertical range of the transformer station to circuit that judge every bar circuit both sides in transmission line of electricity list, if hang down apart from being less than r, then judge that there is a unique point at this place, judge on this basis to be set to the center of circle so that substation is in place, with r be radius circular scope in whether there is the geometric coordinate point of circuit, if existed, then this geometric coordinate point is unique point, if there is no, then calculate the intersection point of transformer station to circuit, getting intersection point point is unique point, according to the trend of circuit, the head and the tail point of circuit and unique point do not carry out vacuate, on circuit, remaining geometric coordinate point all can fall by vacuate,
Step 3, setting circuit vacuate factor d, vacuate factor d is a parameter of control line vacuate density degree, its value represents the maximum deflection difference value between the circuit coordinate point after vacuate and former center line, line segment in circuit after every 2 unique points connection forms the center line of whole circuit, the vertical range of all non-unique points and center line on computational scheme, and determine the maximum normal distance dmax between every 2 unique points, with dmax compared with vacuate factor d given in advance: if dmax<d, then the point between these 2 unique points is all cast out; If dmax >=d, the reference mark retaining dmax corresponding forms new unique point, and with this point for separation, circuit is cut to two parts, reuses the method, until the equal <d of all dmax, the i.e. vacuate of complete paired transmission line to these two parts;
Coordinate points between step 4, every 2 unique points after vacuate is stored in a coordinate points array according to line alignment, a new circuit is formed according to line alignment after circuit completes vacuate, and upgrade the coordinate point sequence of original circuit, form the electric network wiring scheme after vacuate.
2. as claimed in claim 1 towards the automatic vacuate method of geographical wiring diagram of Electric Power Network Planning, it is characterized in that: the regional extent in step one comprises administrative region or electric pressure specifies the transmission line of electricity scope needing to carry out vacuate process.
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| CN201510901827.4A CN105550256B (en) | 2015-12-08 | 2015-12-08 | A kind of geographical wiring diagram towards Electric Power Network Planning vacuates method automatically |
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| CN201510901827.4A CN105550256B (en) | 2015-12-08 | 2015-12-08 | A kind of geographical wiring diagram towards Electric Power Network Planning vacuates method automatically |
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| CN105550256B CN105550256B (en) | 2018-07-31 |
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Cited By (4)
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| CN108205565A (en) * | 2016-12-19 | 2018-06-26 | 北京四维图新科技股份有限公司 | Electronic map element vacuates method, apparatus and terminal |
| CN110750556A (en) * | 2019-10-26 | 2020-02-04 | 武汉中海庭数据技术有限公司 | Method and device for thinning and gap filling of geographic data and storage medium |
| CN112163330A (en) * | 2020-09-23 | 2021-01-01 | 武汉大学 | Power distribution network planning graph visibility optimization method |
| CN115630181A (en) * | 2022-11-04 | 2023-01-20 | 中科星图数字地球合肥有限公司 | Data thinning method, device and related equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112163330A (en) * | 2020-09-23 | 2021-01-01 | 武汉大学 | Power distribution network planning graph visibility optimization method |
| CN115630181A (en) * | 2022-11-04 | 2023-01-20 | 中科星图数字地球合肥有限公司 | Data thinning method, device and related equipment |
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