A method for automatic settlement of engineering data based on the construction progress of power grid projects

Abstract

The invention relates to the technical field of engineering settlement, and specifically discloses an automatic settlement method for engineering data based on the construction progress of a power grid project, comprising the following steps: step S1: constructing an as-built model, establishing a three-dimensional coordinate system, obtaining a plane formed by two adjacent transmission poles, and drawing a perpendicular line of the plane through a center point; step S2: selecting a shooting point satisfying a first constraint on the perpendicular line, and acquiring a shooting image at a corresponding position on the site of a power distribution network project; step S3: establishing a two-dimensional coordinate system on the shooting image, drawing a perpendicular bisector of a line segment connecting the upper end points of the two adjacent transmission poles, and obtaining an arc corresponding to a power distribution line; obtaining an angle according to the perpendicular bisector and the arc; step S4: when the angle is less than or equal to an angle threshold, drawing a circle according to the perpendicular bisector and the arc, and obtaining the length of the arc according to the circle; when the angle is greater than the angle threshold, obtaining the length of the arc through a definite integral; and obtaining the cost of the power distribution line of the power distribution network project according to the length of the arc.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering settlement, and in particular to an automatic settlement method for engineering data based on the construction progress of a power grid project. Background Art

[0002] Project data settlement is an important part of construction project management. It mainly refers to the accounting and settlement of project costs after the project is completed to ensure that the actual cost of the project is consistent with the budget. Generally speaking, project data settlement includes project confirmation, cost calculation, change adjustment, contract terms review and final settlement.

[0003] In the process of engineering settlement of transmission line stringing engineering, it is often necessary to calculate the actual routing length of the transmission line, determine the consumed engineering materials based on the actual routing length, and then settle the engineering cost of the routing part; and when calculating the actual routing length of the transmission line, it is often necessary to consider the sag of the transmission line, and the sag is the maximum vertical distance between the curve and the connecting line suspended between two adjacent towers; but in the prior art, the sag of the transmission line is generally calculated by two methods: one method is to calculate the sag by horizontal tension or stress, and the other method is to calculate the sag by using the data and formula given by the design; the sags calculated by the above two methods are both theoretical values, but the construction process is relatively changeable, and the theoretical values ​​often cannot truly reflect the transmission line stringing situation, resulting in inaccurate engineering costs. Summary of the invention

[0004] The purpose of the present invention is to provide a method for automatic settlement of engineering data based on the construction progress of a power grid project to solve the above technical problems.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A method for automatic settlement of engineering data based on the construction progress of a power grid project comprises the following steps:

[0007] Step S1: obtaining a wiring diagram of the distribution network project and constructing an as-built model of the distribution network project; establishing a three-dimensional coordinate system in the as-built model, treating the transmission pole as a vertical line segment in the three-dimensional coordinate system, and obtaining an expression of the vertical line segment, which is recorded as an expression of the transmission pole;

[0008] The expressions of two adjacent transmission poles are obtained and recorded as L1 and L2 respectively, a plane α is obtained according to L1 and L2, and the center point C of the plane α is obtained, and a perpendicular line of the plane α is drawn through the center point C;

[0009] Step S2: Select a shooting point P of the drone on the vertical line, and the distance between the shooting point P and the plane α satisfies the first constraint Where PL is the set of all coordinate points contained in the plane α in the three-dimensional coordinate system, and W is the set of all coordinate points contained in the shooting range of the drone in the three-dimensional coordinate system; obtain the longitude and latitude coordinates P′ corresponding to the shooting point P at the site of the distribution network project, and obtain the shooting image at P′ by the drone;

[0010] Step S3: Establish a two-dimensional coordinate system on the captured image, and obtain the two-dimensional coordinates corresponding to the upper endpoints of two adjacent transmission poles in the captured image, which are respectively recorded as TP1 (x1, y1) and TP2 (x2, y2); the upper endpoint is the endpoint on the transmission pole connected to the transmission line;

[0011] Determine the midpoint m of the line connecting TP1 and TP2; obtain the arc S(i) corresponding to the transmission line between TP1 and TP2 in the two-dimensional coordinate system, where i is the horizontal coordinate of each point on the arc, and obtain the lowest point M of the arc S(i); connect the midpoint m and the lowest point M to obtain the line segment |Mm|, and draw the perpendicular bisector L of the line segment |TP1TP2| through the midpoint m, and obtain the angle θ between the perpendicular bisector L and the line segment |Mm|;

[0012] Step S4: If θ≤At, where At is a preset angle threshold, then select a point on the perpendicular bisector L as the center O, and the center O satisfies the second constraint |OM′|=|OTP1|=|OTP2|, where M′ is the intersection of the perpendicular bisector L and the arc S(i); draw a circle based on the center O and with |OM′| as the radius; obtain the length of the arc S(i) in the circle Where R is the length of the line segment |OM′|, ∠|OTP1||OTP2| is the angle between |OTP1| and |OTP2|; if θ>At, then the length of the arc S(i) is obtained

[0013] According to the length SL of the arc S(i), the transmission line cost of the distribution network project is obtained.

[0014] As a further solution of the present invention: the process of obtaining the as-built model includes:

[0015] A BIM model of the distribution network project is created based on BIM software. When the construction progress in the BIM model reaches 100%, the BIM model at this time is recorded as the completion model.

[0016] As a further solution of the present invention: the process of obtaining the plane α includes:

[0017] The coordinates of the upper endpoints of two adjacent transmission poles are obtained in the three-dimensional coordinate system, which are respectively recorded as UP1 (a1, b1, c1) and UP2 (a2, b2, c2), and the coordinates of the lower endpoints of two adjacent transmission poles are obtained, which are respectively recorded as DOW1 (A1, B1, C1) and DOW2 (A2, B2, C2);

[0018] Obtain the direction vector V1 = (a1-A1, b1-B1, c1-C1) of L1, and obtain the direction vector V2 = (a2-A2, b2-B2, c2-C2) of L2, cross-multiply V1 and V2 to obtain the normal vector n; obtain the components of the normal vector, recorded as (nx, ny, nz); according to UP1 (a1, b1, c1) and the components of the normal vector (nx, ny, nz), obtain the equation of plane α as nx(x-a1)+ny(y-b1)+nz(z-c1)=0.

[0019] As a further solution of the present invention: the process of obtaining the midpoint m of the line segment |TP1TP2| includes, according to TP1(x1, y1) and TP2(x2, y2), obtaining the coordinates of the midpoint m as follows:

[0020] As a further solution of the present invention: the process of obtaining the lowest point M of the arc S(i) includes:

[0021] Get the horizontal coordinates of each extreme point on the arc that satisfies S′(i)=0, and get the horizontal coordinate set J={i 1, i2, ..., iN}, where N is the total number of extreme points; then get the vertical coordinate value at each extreme point, and get the set K={S(i1), S(i 1), ..., S(iN)}, select the point corresponding to Min(K) on the arc S(i), and record it as the lowest point M of the arc S(i).

[0022] As a further solution of the present invention: the process of obtaining the angle θ between the vertical line L and the line segment |Mm| includes:

[0023] According to the vertical line L and the line segment |Mm|, the direction vectors of the vertical line L and the line segment |Mm| are obtained, which are respectively denoted as X L and X Mm ; Get the angle between the vertical line L and the line segment |Mm|

[0024] As a further solution of the present invention: the setting range of the angle threshold is (0°, 45°).

[0025] As a further solution of the present invention: the process of obtaining the transmission line cost according to SL includes obtaining the scale Sc of the completion model to obtain the actual length SL′=SL / Sc of the arc S(i); recording every two adjacent transmission poles as a group, and accumulating the actual lengths of the transmission lines in each group in the distribution network project to obtain the transmission line cost.

[0026] Beneficial effects of the present invention:

[0027] In the prior art, the sag of a transmission line is generally calculated by two methods: one method is to calculate the sag by horizontal tension or stress, and the other method is to calculate the sag by using the data and formulas given by the design; the sags calculated by the above two methods are both theoretical values, but the construction process is relatively changeable, and the theoretical values ​​often cannot truly reflect the wiring conditions of the transmission line, resulting in inaccurate engineering costs.

[0028] Compared with the prior art, the present invention constructs a three-dimensional completion model of the distribution network project by obtaining the routing diagram of the distribution network project, and establishes a three-dimensional coordinate system in the model, treating the transmission pole as a vertical line segment. It provides preliminary data and a visual basis, which is helpful for subsequent precise calculation and spatial positioning. The best shooting point P of the drone is selected on the set vertical line to ensure that this point satisfies the first constraint of the plane α. This can ensure that the captured image can effectively cover and reflect the area to be monitored, thereby obtaining accurate field data. A two-dimensional coordinate system is established on the obtained captured image, and the coordinates of the upper end points TP1 and TP2 of the two adjacent transmission poles are obtained, and then the midpoint m, the lowest point M and the angle θ are obtained, which provides direct data for calculating the actual length and cost of the wire. According to the comparison between the angle θ and the preset threshold At, different methods are adopted to calculate the arc length SL of the wire between the two transmission poles, and finally the cost of the transmission line of the distribution network project is calculated based on this. The results of the previous measurements are converted into economic costs, achieving the purpose of automatic settlement. By using drone photography and 3D modeling technology, the material loss and cost of transmission lines in power grid project construction can be calculated accurately and quickly, thereby improving the automation level and accuracy of engineering settlement, reducing labor costs and possible human errors, and improving work efficiency; based on the actual sag images taken, the obtained transmission line length is more in line with the actual situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 It is a structural schematic diagram of an automatic settlement method of engineering data based on the construction progress of a power grid project according to the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 As shown, the present invention is a method for automatic settlement of engineering data based on the construction progress of a power grid project, comprising the following steps:

[0033] Step S1: obtaining a wiring diagram of the distribution network project and constructing an as-built model of the distribution network project; establishing a three-dimensional coordinate system in the as-built model, treating the transmission pole as a vertical line segment in the three-dimensional coordinate system, and obtaining an expression of the vertical line segment, which is recorded as an expression of the transmission pole;

[0034] The expressions of two adjacent transmission poles are obtained and recorded as L1 and L2 respectively, a plane α is obtained according to L1 and L2, and the center point C of the plane α is obtained, and a perpendicular line of the plane α is drawn through the center point C;

[0035] It can be understood that first, a wiring diagram of the distribution network project is obtained, and a project design drawing of the distribution network construction project is obtained based on the wiring diagram, and information is extracted from the project design drawing to obtain basic information of the distribution network project, and the basic information is imported into the BIM software; the basic information includes the direction of the transmission line, the location of the transmission pole, etc., and a corresponding three-dimensional model is created through the BIM software, and the location and size of the equipment in the three-dimensional model need to be consistent with the actual situation;

[0036] As a preferred embodiment of the present invention, the process of obtaining the as-built model includes:

[0037] A BIM model of the distribution network project is created based on BIM software. When the construction progress in the BIM model reaches 100%, the BIM model at this time is recorded as a completed model.

[0038] It is understood that the BIM model is a digital representation that makes the design, construction and management process of the project more efficient and enables real-time update and sharing of project information. Associate the BIM model with the actual construction progress. This is usually achieved through the internal functions of the software, allowing the model to display the current progress status and ensure that the model reflects real-time data. When the construction progress in the BIM model reaches 100%, that is, all planned work has been completed, the model is defined as the as-built model. The as-built model represents the final state of the project, contains all construction elements and equipment, and is a three-dimensional record of the completion of the project.

[0039] As a preferred embodiment of the present invention, the process of obtaining the plane α includes:

[0040] The coordinates of the upper endpoints of two adjacent transmission poles are obtained in the three-dimensional coordinate system, which are respectively recorded as UP1 (a1, b1, c1) and UP2 (a2, b2, c2), and the coordinates of the lower endpoints of two adjacent transmission poles are obtained, which are respectively recorded as DOW1 (A1, B1, C1) and DOW2 (A2, B2, C2);

[0041] Obtain the direction vector V1 = (a1-A1, b1-B1, c1-C1) of L1, and obtain the direction vector V2 = (a2-A2, b2-B2, c2-C2) of L2, cross-multiply V1 and V2 to obtain the normal vector n; obtain the components of the normal vector, recorded as (nx, ny, nz); according to UP1 (a1, b1, c1) and the components of the normal vector (nx, ny, nz), obtain the equation of plane α as nx (x-a1) + ny (y-b1) + nz (z-c1) = 0;

[0042] It should be noted that the process of cross-producting V1 and V2 includes:

[0043]

[0044] It is worth noting that the plane α is a bounded rectangular plane formed by vertical line segments L1 and L2, and horizontal line segments |UP1UP2| and |DOW1DOW2|.

[0045] Step S2: Select a shooting point P of the drone on the vertical line, and the distance between the shooting point P and the plane α satisfies the first constraint Where PL is the set of all coordinate points contained in the plane α in the three-dimensional coordinate system, and W is the set of all coordinate points contained in the shooting range of the drone in the three-dimensional coordinate system; obtain the longitude and latitude coordinates P′ corresponding to the shooting point P at the site of the distribution network project, and obtain the shooting image at P′ by the drone;

[0046] It is worth noting that the distance between the shooting point P and the plane α should not be too far. In the image taken by the drone, the resolution of the plane α must reach a resolution threshold, which is usually set to 5 cm / pixel.

[0047] Step S3: Establish a two-dimensional coordinate system on the captured image, and obtain the two-dimensional coordinates corresponding to the upper endpoints of two adjacent transmission poles in the captured image, which are respectively recorded as TP1 (x1, y1) and TP2 (x2, y2); the upper endpoint is the endpoint on the transmission pole connected to the transmission line;

[0048] Determine the midpoint m of the line connecting TP1 and TP2; obtain the arc S(i) corresponding to the transmission line between TP1 and TP2 in the two-dimensional coordinate system, where i is the horizontal coordinate of each point on the arc, and obtain the lowest point M of the arc S(i); connect the midpoint m and the lowest point M to obtain the line segment |Mm|, and draw the perpendicular bisector L of the line segment |TP1TP2| through the midpoint m, and obtain the angle θ between the perpendicular bisector L and the line segment |Mm|;

[0049] It is worth noting that the angle θ between the vertical line L and the line segment |Mm| reflects the height of the terrain where the two transmission poles are located. The larger the angle θ, the higher the difference in terrain where the two transmission poles are located, and vice versa. When the terrain heights where the two transmission poles are located are the same, the angle θ=0.

[0050] It should be noted that since there may be a slope at the site of the distribution network project, the sag of the transmission line between two adjacent transmission poles will be affected. The lowest point of the transmission line that produces sag will be closer to the transmission pole with lower terrain. At this time, the transmission line is not an arc, but an irregular curve. For irregular curves, it is not suitable to calculate the length by drawing a circle.

[0051] As a preferred embodiment of the present invention, the process of obtaining the midpoint m of the line segment |TP1TP2| includes: according to TP1 (x1, y1) and TP2 (x2, y2), the coordinates of the midpoint m are obtained as follows:

[0052]

[0053] As a preferred embodiment of the present invention, the process of obtaining the lowest point M of the arc S(i) includes:

[0054] Get the abscissa of each extreme point on the arc that satisfies S′(i)=0, and get the abscissa set J={i 1, i2, ..., iN}, where N is the total number of extreme points; then get the ordinate value at each extreme point, and get the set K={S(i1), S(i 1), ..., S(iN)}, select the point corresponding to Min(K) on the arc S(i), and record it as the lowest point M of the arc S(i);

[0055] It can be understood that the lowest point of the arc S(i) is the lowest point of the transmission line sag, and the horizontal coordinates that make S′(i) = 0 are obtained. These horizontal coordinates correspond to the extreme points of the arc S(i), which are local maximum points or minimum points; the values ​​of these horizontal coordinates are stored in the set K, and the minimum vertical coordinate value Min(K) is found from the set K. The point corresponding to this minimum value (that is, the combination of the horizontal coordinate and the vertical coordinate) is the lowest point of the arc S(i) in the interval [x1, x2].

[0056] As a preferred embodiment of the present invention, the process of obtaining the angle θ between the vertical line L and the line segment |Mm| includes:

[0057] According to the vertical line L and the line segment |Mm|, the direction vectors of the vertical line L and the line segment |Mm| are obtained, which are respectively denoted as X L and X Mm ; Get the angle between the vertical line L and the line segment |Mm|

[0058] It is understandable that the dot product X L ·X Mm It reflects the similarity between two vectors. When the directions of the two vectors are exactly the same, the dot product is the largest; when the two vectors are perpendicular to each other, the dot product is zero. At the same time, it is necessary to calculate the two direction vectors X L and X Mm The modulus of a vector represents the length or size of the vector. Use the above data to calculate the two direction vectors X L and X Mm The cosine of the angle, so the angle itself can be obtained through the inverse cosine function.

[0059] Step S4: If θ≤At, where At is a preset angle threshold, then select a point on the perpendicular bisector L as the center O, and the center O satisfies the second constraint |OM′|=|OTP1|=|OTP2|, where M′ is the intersection of the perpendicular bisector L and the arc S(i); draw a circle based on the center O and with |OM′| as the radius; obtain the length of the arc S(i) in the circle Where R is the length of the line segment |OM′|, ∠|OTP1||OTP2| is the angle between |OTP1| and |OTP2|; if θ>At, then the length of the arc S(i) is obtained

[0060] According to the length SL of the arc S(i), the transmission line cost of the distribution network project is obtained;

[0061] It can be understood that the calculation of the length of the arc S(i) includes two cases. The first case is that when the angle θ is less than or equal to the preset angle threshold At, the arc length is calculated by constructing a circle. The second case is that when the angle θ is greater than the preset angle threshold At, the arc length is calculated by integrating the arc parameter equation.

[0062] As a preferred embodiment of the present invention, the setting range of the angle threshold is (0°, 45°);

[0063] It can be understood that when the angle is less than or equal to the angle threshold, due to the small angle, the method of constructing a circle can be used to calculate the length of the arc S(i). This method assumes that a local arc can better approximate the actual curve shape, which is suitable for situations where the curvature is large but the overall curvature is small; when the angle is greater than the angle threshold, due to the large angle, it exceeds the set threshold, and it is more appropriate to use the integration method to calculate the length of the arc S(i). This is usually applicable to situations where the curve shape is more complex or the curvature is higher. Directly using the mathematical expression of the curve for integration can obtain more accurate results. In addition, when the angle is small, using the arc approximation can greatly simplify the calculation process, because the length of the arc can be directly calculated by a simple geometric formula; for larger angles, the arc approximation may no longer be applicable. At this time, the integration method can more accurately reflect the true length of the curve and ensure the accuracy of the calculation results.

[0064] As a preferred embodiment of the present invention, the process of obtaining the transmission line cost according to SL includes obtaining the scale Sc of the completion model to obtain the actual length SL′=SL / Sc of the arc S(i); recording each two adjacent transmission poles as a group, and accumulating the actual lengths of the transmission lines in each group in the distribution network project to obtain the transmission line cost.

[0065] It should be noted that the number of transmission lines required is calculated based on the total actual length of the transmission lines and the distance between the transmission poles, and the required material cost and labor cost (including intangible management costs, etc.) are calculated in combination with the height and width of each transmission pole and the terrain undulations. Finally, all costs are added together to get the budget cost of the entire distribution network project.

[0066] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for automatic settlement of engineering data based on the construction progress of a power grid project, characterized in that: The following steps are involved: Step S1: Obtain a wiring diagram of the distribution network project and construct a completion model of the distribution network project; A three-dimensional coordinate system is established in the as-built model, in which the transmission pole is regarded as a vertical line segment, and an expression of the vertical line segment is obtained, which is recorded as the expression of the transmission pole; The expressions of two adjacent transmission poles are obtained and recorded as L1 and L2 respectively, a plane α is obtained according to L1 and L2, and the center point C of the plane α is obtained, and a perpendicular line of the plane α is drawn through the center point C; Step S2: Select a shooting point P of the drone on the vertical line, and the distance between the shooting point P and the plane α satisfies the first constraint Where PL is the set of all coordinate points contained in the plane α in the three-dimensional coordinate system, and W is the set of all coordinate points contained in the shooting range of the drone in the three-dimensional coordinate system; obtain the longitude and latitude coordinates P′ corresponding to the shooting point P at the site of the distribution network project, and obtain the shooting image at P′ by the drone; Step S3: Establish a two-dimensional coordinate system on the captured image, and obtain the two-dimensional coordinates corresponding to the upper endpoints of two adjacent transmission poles in the captured image, which are respectively recorded as TP1 (x1, y1) and TP2 (x2, y2); the upper endpoint is the endpoint on the transmission pole connected to the transmission line; Determine the midpoint m of the line connecting TP1 and TP2; obtain the arc S(i) corresponding to the transmission line between TP1 and TP2 in the two-dimensional coordinate system, where i is the horizontal coordinate of each point on the arc, and obtain the lowest point M of the arc S(i); connect the midpoint m and the lowest point M to obtain the line segment |Mm|, and draw the perpendicular bisector L of the line segment |TP1TP2| through the midpoint m, and obtain the angle θ between the perpendicular bisector L and the line segment |Mm|; Step S4: If θ≤At, where At is a preset angle threshold, then select a point on the perpendicular bisector L as the center O, and the center O satisfies the second constraint |OM′|=|OTP1|=|OTP2|, where M′ is the intersection of the perpendicular bisector L and the arc S(i); draw a circle based on the center O and with |OM′| as the radius; obtain the length of the arc S(i) in the circle Where R is the length of the line segment |OM′|, ∠|OTP1||OTP2| is the angle between |OTP1| and |OTP2|; if θ>At, then the length of the arc S(i) is obtained According to the length SL of the arc S(i), the transmission line cost of the distribution network project is obtained.

2. The method for automatic settlement of engineering data based on the construction progress of a power grid project according to claim 1 is characterized in that: In step S1, the process of obtaining the as-built model includes: A BIM model of the distribution network project is created based on BIM software. When the construction progress in the BIM model reaches 100%, the BIM model at this time is recorded as the completion model.

3. The method for automatic settlement of engineering data based on the construction progress of a power grid project according to claim 1 is characterized in that: In step S1, the process of obtaining the plane α includes: The coordinates of the upper endpoints of two adjacent transmission poles are obtained in the three-dimensional coordinate system, which are respectively recorded as UP1 (a1, b1, c1) and UP2 (a2, b2, c2), and the coordinates of the lower endpoints of two adjacent transmission poles are obtained, which are respectively recorded as DOW1 (A1, B1, C1) and DOW2 (A2, B2, C2); Obtain the direction vector V1 = (a1-A1, b1-B1, c1-C1) of L1, and obtain the direction vector V2 = (a2-A2, b2-B2, c2-C2) of L2, cross-multiply V1 and V2 to obtain the normal vector n; obtain the components of the normal vector, recorded as (nx, ny, nz); according to UP1 (a1, b1, c1) and the components of the normal vector (nx, ny, nz), obtain the equation of plane α as nx(x-a1)+ny(y-b1)+nz(z-c1)=0.

4. The method for automatic settlement of engineering data based on the construction progress of a power grid project according to claim 1 is characterized in that: In step S3, the process of obtaining the midpoint m of the line segment |TP1TP2| includes obtaining the coordinates of the midpoint m according to TP1 (x1, y1) and TP2 (x2, y2):

5. The method for automatic settlement of engineering data based on the construction progress of a power grid project according to claim 1 is characterized in that: In step S3, the process of obtaining the lowest point M of the arc S(i) includes: Get the horizontal coordinates of each extreme point on the arc that satisfies S′(i)=0, and get the horizontal coordinate set J={i1,i2,…,iN}, where N is the total number of extreme points; then get the vertical coordinate value at each extreme point, and get the set K={S(i1), S(i2),…,S(iN)}, select the point corresponding to the minimum value Min(K) of the set K on the arc S(i), and record it as the lowest point M of the arc S(i).

6. The method for automatic settlement of engineering data based on the construction progress of a power grid project according to claim 1, characterized in that: In step S3, the process of obtaining the angle θ between the vertical line L and the line segment |Mm| includes: According to the vertical line L and the line segment |Mm|, the direction vectors of the vertical line L and the line segment |Mm| are obtained, which are respectively denoted as X L and X Mm ; Get the angle between the vertical line L and the line segment |Mm| 7. The method for automatic settlement of engineering data based on the construction progress of a power grid project according to claim 1, characterized in that: In step S4, the setting range of the angle threshold is (0°, 45°).

8. The method for automatic settlement of engineering data based on the construction progress of a power grid project according to claim 1, characterized in that: In step S4, the process of obtaining the transmission line cost according to SL includes obtaining the scale Sc of the completion model to obtain the actual length SL′=SL / Sc of the arc S(i); recording each two adjacent transmission poles as a group, and accumulating the actual lengths of the transmission lines in each group in the distribution network project to obtain the transmission line cost.

Images