CN111006594A - Displacement monitoring device and method applied to wind power generation system - Google Patents
Displacement monitoring device and method applied to wind power generation system Download PDFInfo
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- CN111006594A CN111006594A CN201911344725.1A CN201911344725A CN111006594A CN 111006594 A CN111006594 A CN 111006594A CN 201911344725 A CN201911344725 A CN 201911344725A CN 111006594 A CN111006594 A CN 111006594A
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- displacement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
Abstract
The invention relates to a displacement monitoring device and a monitoring method applied to a wind power generation system, which comprises the following steps: the galvanized steel plate comprises a first galvanized plate and a second galvanized plate, wherein the first galvanized plate and the second galvanized plate are perpendicular to each other, and a first mark point and a second mark point are arranged on the first galvanized plate; the second galvanized plate is provided with a third mark point and a fourth mark point; the central points of the first mark point, the second mark point, the third mark point and the fourth mark point are positioned on the same horizontal straight line and adopt LED lamps; and bubble gradienters are arranged on the first galvanized plate and the second galvanized plate. The invention has the beneficial effects that: the invention can monitor the displacement of the wind turbine set in real time and all weather, has the advantages of simple operation, low cost, high precision, stable effect and the like, and can effectively evaluate and early warn the safety of the wind power generation system particularly in severe weather such as strong wind, strong snow, earthquake and the like.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a displacement monitoring device and method applied to a wind power generation system.
Background
With the popularization of renewable energy sources, wind power generation is gradually and rapidly developed as a new energy-saving source. The wind power generation mainly comprises a tower drum and fan blades, and in order to capture more wind resources, the tower drum of the existing wind turbine is made to be hundreds of meters high. This presents a great challenge to the strength and stability of the tower, especially in severe weather such as typhoon, snow storm, etc., the safety detection of the tower is especially important.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a displacement monitoring device and a monitoring method applied to a wind power generation system.
The displacement monitoring device applied to the wind power generation system comprises a first galvanized plate and a second galvanized plate, wherein the first galvanized plate and the second galvanized plate are perpendicular to each other, and a first mark point and a second mark point are arranged on the first galvanized plate; and the second galvanized plate is provided with a third mark point and a fourth mark point.
Preferably, the method comprises the following steps: the central points of the first mark point, the second mark point, the third mark point and the fourth mark point are positioned on the same horizontal straight line and all adopt LED lamps.
Preferably, the method comprises the following steps: and bubble gradienters are arranged on the first galvanized plate and the second galvanized plate.
Preferably, the method comprises the following steps: the horizontal distance between the two mark points on the first galvanized plate is the same as that between the two mark points on the first galvanized plate.
The monitoring method applied to the displacement monitoring device of the wind power generation system comprises the following steps:
1) installing the first galvanized plate and the second galvanized plate on a fan tower drum, and recording the height of an installation point from the ground as S; the first galvanized plate and the second galvanized plate can be horizontally installed by observing the bubble level gauge at the upper part; the directions of the first galvanized plate and the second galvanized plate are adjusted to be the true east direction and the true south direction by adopting a level gauge, so that the surface of the first galvanized plate faces the true south direction, and the surface of the second galvanized plate faces the true east direction;
2) the horizontal distance between the first mark point and the second mark point on the first galvanized sheet is recorded as L; the horizontal distance between a third mark point and a fourth mark point on the second galvanized sheet is recorded as L;
3) respectively placing a first digital camera and a second digital camera in the true south direction and the true east direction; the central sight line of the first digital camera is just vertical to the first galvanized plate, and the central sight line of the second digital camera is just vertical to the second galvanized plate;
4) in a windless environment, when the fan does not work, the first digital camera and the second digital camera shoot the first galvanized plate and the second galvanized plate which do not vibrate at the same time to be used as a reference image at the time of 0; processing the marked point images of the first galvanized plate and the second galvanized plate, and respectively measuring the horizontal axis pixel coordinates of the first marked point and the second marked point as M1 and M2, and respectively measuring the horizontal axis pixel coordinates of the third marked point and the fourth marked point as M3 and M4;
5) the ratio of the actual distance of the first galvanized sheet to the image pixel distance is
The ratio of the actual distance of the second galvanized sheet to the image pixel distance is
6) Continuously photographing the mark points all day long according to a set photographing frequency, if the mark points meet the weather of strong wind and heavy rain, recording as the time T, and obtaining the horizontal axis pixel coordinates of the first mark point and the second mark point as T1 and T2 respectively, and the horizontal axis pixel coordinates of the third mark point and the fourth mark point as T3 and T4 respectively;
7) through calculation, the displacement of the first mark point at the left displacement monitoring device at the time t is as follows:
X1＝(T1-M1)·λ1
the displacement of the second mark point at the time t on the left side of the displacement monitoring device is as follows:
X2＝(T2-M2)·λ1；
the displacement of the third mark point at the left displacement monitoring device at the moment t is as follows:
X3＝(T3-M3)·λ2；
the displacement of the fourth mark point at the time t on the left side displacement monitoring device is as follows:
X4＝(T4-M4)·λ2；
and averaging the displacement of the first mark point and the second mark point, wherein the displacement component of the first galvanized sheet in the positive south direction or the positive north direction is as follows when the displacement is a negative value:
and averaging the displacement of the third mark point and the fourth mark point, wherein the displacement of the second galvanized sheet in the east direction or the west direction when the displacement is a negative value is a component:
the actual displacement value of the wind turbine tower at the height S from the ground is
The displacement direction angle is: (theta is an angle with respect to the east direction and is positive counterclockwise)
8) The first galvanized plate and the second galvanized plate are rigid bodies and are fixed with the fan tower drum without relative displacement, and any mark point in the first galvanized plate and the second galvanized plate can reflect the motion state of the assembly; obtaining a displacement value X of the fan tower drum at the position of the height S from the ground, and a displacement direction angle theta;
preferably, the method comprises the following steps: step 8) also comprises that the fan is of a cantilever structure, the bottom displacement is 0, and the angle of deformation of the fan tower cylinder at the ground clearance S
The application method of the monitoring method comprises the steps that N displacement detection devices are installed at different heights of a fan tower drum, and a camera is adopted to shoot N measuring points simultaneously; calculating the relative displacement and the corner of the tower drum of the fan under the action of wind load, snow load and external earthquake force; the whole displacement deflection curve of the structure under the action of external force is obtained by researching the displacement of each measuring point, and safety early warning is carried out on the draught fan with large deformation.
The invention has the beneficial effects that: the invention can monitor the displacement of the wind turbine set in real time and all weather, has the advantages of simple operation, low cost, high precision, stable effect and the like, and can effectively evaluate and early warn the safety of the wind power generation system particularly in severe weather such as strong wind, strong snow, earthquake and the like.
Drawings
FIG. 1 is a schematic plan view of a displacement monitoring device of a wind power generation system;
FIG. 2 is a schematic structural view of a displacement monitoring device of the wind power generation system;
description of reference numerals: the galvanized steel sheet comprises a first galvanized steel sheet 1, a second galvanized steel sheet 2, a first mark point 3, a second mark point 4, a third mark point 5, a fourth mark point 6, a fan tower 7, a first digital camera 8 and a second digital camera 9.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The displacement monitoring device applied to the wind power generation system comprises a first galvanized plate 1 and a second galvanized plate 2, wherein the first galvanized plate 1 and the second galvanized plate 2 are perpendicular to each other, and a first marking point 3 and a second marking point 4 are arranged on the first galvanized plate 1; the second galvanized sheet 2 is provided with a third marking point 5 and a fourth marking point 6. The central points of the first mark point, the second mark point, the third mark point and the fourth mark point are positioned on the same horizontal straight line and all adopt LED lamps. Bubble gradienters are arranged on the first galvanized sheet 1 and the second galvanized sheet 2. The horizontal distance between the two mark points on the first galvanized sheet 1 is the same as that between the two mark points on the first galvanized sheet 1.
The monitoring method applied to the displacement monitoring device of the wind power generation system comprises the following steps:
1) installing the first galvanized plate 1 and the second galvanized plate 2 on a fan tower drum 7, and recording the height of an installation point from the ground as S; the first galvanized sheet 1 and the second galvanized sheet 2 can be kept horizontally installed by observing the bubble level gauge at the upper part; the directions of the first galvanized plate 1 and the second galvanized plate 2 are adjusted to be the direction of the true east and the direction of the true south by adopting a level gauge, so that the first galvanized plate 1 faces the direction of the true south, and the second galvanized plate 2 faces the direction of the true east;
2) the horizontal distance between a first mark point 3 and a second mark point 4 on the first galvanized plate 1 is marked as L; the horizontal distance between a third mark point 5 and a fourth mark point 6 on the second galvanized sheet 1 is marked as L;
3) in the true south and true east directions, a first digital camera 8 and a second digital camera 9 are respectively placed; the central sight line of the first digital camera 8 is just vertical to the first galvanized plate 1, and the central sight line of the second digital camera 9 is just vertical to the second galvanized plate 2;
4) in a windless environment, when the fan does not work, the first digital camera 8 and the second digital camera 9 shoot the first galvanized plate 1 and the second galvanized plate 2 which do not vibrate at the same time as a reference image at the time of 0; processing the marked point images of the first galvanized plate 1 and the second galvanized plate 2, and measuring the horizontal axis pixel coordinates of the first marked point 3 and the second marked point 4 as M1 and M2 respectively, and measuring the horizontal axis pixel coordinates of the third marked point 5 and the fourth marked point 6 as M3 and M4 respectively;
5) the ratio of the actual distance of the first galvanized sheet 1 to the image pixel distance is
The ratio of the actual distance of the second galvanized sheet 2 to the image pixel distance is
6) Continuously photographing the mark points all day long according to a set photographing frequency, if the mark points meet the weather of strong wind and heavy rain, recording as the time T, and obtaining the horizontal axis pixel coordinates of the first mark point and the second mark point as T1 and T2 respectively, and the horizontal axis pixel coordinates of the third mark point and the fourth mark point as T3 and T4 respectively;
7) through calculation, the displacement of the first mark point at the left displacement monitoring device at the time t is as follows: x1＝(T1-M1)·λ1
The displacement of the second mark point at the time t on the left side of the displacement monitoring device is as follows: x2＝(T2-M2)·λ1；
The displacement of the third mark point at the left displacement monitoring device at the moment t is as follows: x3＝(T3-M3)·λ2；
The displacement of the fourth mark point at the time t on the left side displacement monitoring device is as follows: x4＝(T4-M4)·λ2；
Averaging the displacement of the first mark point and the second mark point, wherein the displacement component of the first galvanized plate 1 in the south-plus direction is as follows: (if the displacement is negative, the measuring point moves to the north direction)
And averaging the displacement of the third mark point and the fourth mark point, wherein the displacement of the second galvanized plate 2 in the east direction is a component: (if the displacement is negative, the measuring point moves to the positive west direction)
The actual displacement value of the wind turbine tower 7 at the height S from the ground is
The displacement direction angle is: (theta is an angle with respect to the east direction and is positive counterclockwise)
8) The first galvanized plate 1 and the second galvanized plate 2 are rigid bodies and are fixed with the fan tower drum 7 without relative displacement, and any mark point in the first galvanized plate 1 and the second galvanized plate 2 can reflect the motion state of the assembly; obtaining a displacement value X of the fan tower 7 at the height S from the ground, and a displacement direction angle theta; the fan is of a cantilever structure, the bottom displacement is 0, and the angle of deformation of the fan tower cylinder 7 at the ground clearance S
According to the method, N displacement detection devices are arranged at different heights of the fan tower drum 7, and a camera is adopted to shoot N measuring points simultaneously; calculating the relative displacement and the corner of the tower drum of the fan under the action of wind load, snow load and external earthquake force; the whole displacement deflection curve of the structure under the action of external force is obtained by researching the displacement of each measuring point, and safety early warning is carried out on the draught fan with large deformation.
Claims (7)
1. The utility model provides a be applied to wind power generation system displacement monitoring devices which characterized in that: the galvanized steel plate comprises a first galvanized plate (1) and a second galvanized plate (2), wherein the first galvanized plate (1) and the second galvanized plate (2) are perpendicular to each other, and a first marking point (3) and a second marking point (4) are arranged on the first galvanized plate (1); the second galvanized plate (2) is provided with a third mark point (5) and a fourth mark point (6).
2. The displacement monitoring device applied to the wind power generation system according to claim 1, wherein: the central points of the first mark point (3), the second mark point (4), the third mark point (5) and the fourth mark point (6) are positioned on the same horizontal straight line and all adopt LED lamps.
3. The displacement monitoring device applied to the wind power generation system according to claim 1, wherein: and bubble gradienters are arranged on the first galvanized plate (1) and the second galvanized plate (2).
4. The displacement monitoring device applied to the wind power generation system according to claim 1, wherein: the horizontal distance between the two mark points on the first galvanized plate (1) is the same as that between the two mark points on the first galvanized plate (1).
5. A monitoring method applied to a wind power generation system displacement monitoring device according to claim 1, characterized by comprising the following steps:
1) installing the first galvanized plate (1) and the second galvanized plate (2) on a fan tower drum (7), and recording the height of an installation point from the ground as S; the first galvanized sheet (1) and the second galvanized sheet (2) can be kept horizontally installed by observing the bubble level gauge at the upper part; the directions of the first galvanized plate (1) and the second galvanized plate (2) are adjusted to be the east-righting direction and the south-righting direction by adopting a level gauge, so that the first galvanized plate (1) faces to the south-righting direction, and the second galvanized plate (2) faces to the east-righting direction;
2) the horizontal distance between a first mark point (3) and a second mark point (4) on the first galvanized plate (1) is marked as L; the horizontal distance between a third mark point (5) and a fourth mark point (6) on the second galvanized plate (1) is marked as L;
3) a first digital camera (8) and a second digital camera (9) are respectively arranged in the south-east direction and the east-west direction; the central sight line of the first digital camera (8) is just vertical to the first galvanized plate (1), and the central sight line of the second digital camera (9) is just vertical to the second galvanized plate (2);
4) in a windless environment, when a fan does not work, a first digital camera (8) and a second digital camera (9) shoot a first galvanized plate (1) and a second galvanized plate (2) which do not vibrate at the same time to serve as a reference image at the time of 0; processing the marked point images of the first galvanized plate (1) and the second galvanized plate (2), and measuring the horizontal axis pixel coordinates of the first marked point (3) and the second marked point (4) as M1 and M2 respectively, and measuring the horizontal axis pixel coordinates of the third marked point (5) and the fourth marked point (6) as M3 and M4 respectively;
5) the ratio of the actual distance of the first galvanized sheet (1) to the image pixel distance is
The ratio of the actual distance of the second galvanized sheet (2) to the image pixel distance is
6) Continuously photographing the mark points all day long according to a set photographing frequency, if the mark points meet the weather of strong wind and heavy rain, recording as the time T, and obtaining the horizontal axis pixel coordinates of the first mark point (3) and the second mark point (4) as T1 and T2 respectively, and the horizontal axis pixel coordinates of the third mark point (5) and the fourth mark point (6) as T3 and T4 respectively;
7) through calculation, the displacement of the first mark point (3) at the left displacement monitoring device at the time t is as follows:
X1＝(T1-M1)·λ1
the displacement of the second mark point (4) at the time t, which occurs in the left displacement monitoring device, is as follows:
X2＝(T2-M2)·λ1；
the displacement of the third mark point (5) at the left displacement monitoring device at the time t is as follows:
X3＝(T3-M3)·λ2；
the displacement of the fourth mark point (6) at the time t, which occurs in the left displacement monitoring device, is as follows:
X4＝(T4-M4)·λ2；
averaging the displacement of the first mark point (3) and the second mark point (4), wherein the displacement component of the first galvanized sheet (1) in the south direction or the north direction when the displacement is negative is as follows:
averaging the displacements of the third mark point (5) and the fourth mark point (6), wherein the displacement of the second galvanized sheet (2) in the east direction or the west direction when the displacement is negative is a component:
the actual displacement value of the wind turbine tower (7) at the height S from the ground is
The displacement direction angle is: theta is an angle with the east direction, and is positive counterclockwise
8) The first galvanized plate (1) and the second galvanized plate (2) are rigid bodies and are fixed with the fan tower drum (7) without relative displacement, and any mark point in the first galvanized plate (1) and the second galvanized plate (2) can reflect the motion state of the assembly; and obtaining the displacement value X of the fan tower drum (7) at the height S from the ground, and the displacement direction angle theta.
6. The monitoring method according to claim 5, wherein: step 8) also comprises that the fan is of a cantilever structure, the bottom displacement is 0, and the deformation angle of the fan tower cylinder (7) at the ground clearance S is
7. A method of using the monitoring method of claim 5, wherein: installing N displacement detection devices at different heights of the fan tower drum (7), and shooting N measuring points by using a camera; calculating the relative displacement and the corner of the tower drum of the fan under the action of wind load, snow load and external earthquake force; the whole displacement deflection curve of the structure under the action of external force is obtained by researching the displacement of each measuring point, and safety early warning is carried out on the draught fan with large deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911344725.1A CN111006594A (en) | 2019-12-24 | 2019-12-24 | Displacement monitoring device and method applied to wind power generation system |
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| CN201911344725.1A CN111006594A (en) | 2019-12-24 | 2019-12-24 | Displacement monitoring device and method applied to wind power generation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111947605A (en) * | 2020-08-20 | 2020-11-17 | 上海同禾工程科技股份有限公司 | Slope safety monitoring system and monitoring method thereof |
| CN112419679A (en) * | 2020-10-27 | 2021-02-26 | 杭州维感科技有限公司 | Building safety monitoring method and device, storage medium and electronic equipment |
| CN114519541A (en) * | 2022-04-20 | 2022-05-20 | 西南交通大学 | Method, device and equipment for evaluating risk of potentially dangerous building and readable storage medium |
-
2019
- 2019-12-24 CN CN201911344725.1A patent/CN111006594A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111947605A (en) * | 2020-08-20 | 2020-11-17 | 上海同禾工程科技股份有限公司 | Slope safety monitoring system and monitoring method thereof |
| CN112419679A (en) * | 2020-10-27 | 2021-02-26 | 杭州维感科技有限公司 | Building safety monitoring method and device, storage medium and electronic equipment |
| CN112419679B (en) * | 2020-10-27 | 2023-02-28 | 杭州维感科技有限公司 | Building safety monitoring method and device, storage medium and electronic equipment |
| CN114519541A (en) * | 2022-04-20 | 2022-05-20 | 西南交通大学 | Method, device and equipment for evaluating risk of potentially dangerous building and readable storage medium |
| CN114519541B (en) * | 2022-04-20 | 2022-08-09 | 西南交通大学 | Method, device and equipment for evaluating risk of potentially dangerous building and readable storage medium |
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Application publication date: 20200414 |
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