KR101665889B1 - Method of vertical inclination of the structure detection and vertical inclination of the structure detection apparatus - Google Patents

Method of vertical inclination of the structure detection and vertical inclination of the structure detection apparatus Download PDF

Info

Publication number
KR101665889B1
KR101665889B1 KR1020150153169A KR20150153169A KR101665889B1 KR 101665889 B1 KR101665889 B1 KR 101665889B1 KR 1020150153169 A KR1020150153169 A KR 1020150153169A KR 20150153169 A KR20150153169 A KR 20150153169A KR 101665889 B1 KR101665889 B1 KR 101665889B1
Authority
KR
South Korea
Prior art keywords
slope
vertical structure
foundation
sensor
tilt
Prior art date
Application number
KR1020150153169A
Other languages
Korean (ko)
Inventor
엄승만
장은승
손종덕
이강주
Original Assignee
두산중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 두산중공업 주식회사 filed Critical 두산중공업 주식회사
Priority to KR1020150153169A priority Critical patent/KR101665889B1/en
Application granted granted Critical
Publication of KR101665889B1 publication Critical patent/KR101665889B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
    • F03D1/003—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/22—Foundations specially adapted for wind motors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/2291—Linear or rotary variable differential transformers (LVDTs/RVDTs) having a single primary coil and two secondary coils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/912—Mounting on supporting structures or systems on a stationary structure on a tower
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y02E10/722—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines

Abstract

Disclosed is an apparatus to sense tilt of a vertical structure, capable of accurately recognizing time for maintenance and time for checking according to the use for a long period of time by accurately determining a tilt state of a wind power generator, comprising: a first sensor sensing an absolute tilt of a foundation positioned on the ground; a second sensor disposed at an equal interval on a vertical structure, whose lower end is fixed to the foundation and which extends upwardly, in an inner circumferential direction to sense a relative tilt of the vertical structure viewed from the foundation; a controller determining whether the ground is abnormal according to a tilt state of the foundation upon receiving sensed data from the first sensor and determining whether a tilt of the vertical structure is within a preset tilt range upon receiving sensed data from the second sensor; and a display unit displaying a corresponding state when the ground is abnormal or when the tilt of the vertical structure is changed to exceed the preset range, wherein the controller determines an absolute tilt of the foundation of the vertical structure.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vertical structure inclination detecting apparatus and a control method thereof,

The present invention relates to an apparatus and method for detecting a tilt of a vertical structure that can accurately determine a tilted state of a foundation and a vertical structure provided with a wind turbine generator,

Generally, a wind power generator is a device that converts wind energy into electric energy. It rotates the wing of the wind power generator and produces electric power by the rotating power of the wing.

Since the wind turbine is capable of producing more wind energy as the wind speed is higher and the wind turbine is larger, the power generation amount of the wind turbine depends on the wind strength and the size of the windmill. Also, as the height increases, the wind blows harder, so the generator in the higher place is larger than the generator in the lower place and the power generation is increased.

Generally, in order to generate electricity using wind power, a wind blowing at an average speed of 4 m / s or more is required. The speed of the wind referred to here is not the speed at the ground but the speed at the height of the wing of the wind turbine.

The structure of the conventional wind turbine is not shown in the drawing, but a nacelle (not shown) for rotatably supporting a rotor blade (not shown) is rotatably installed on the upper end of a tower of a high-rise tower on a ground or platform, (Not shown) such as a speed reducer, a power generator (not shown), and a controller (not shown) so that the rotational force of the rotor blades is transmitted to the generator via a hub (not shown) via the main shaft.

Therefore, although the power generation capacity can be increased as the height of the tower of the wind turbine is increased, the cost and the weight of the tower are increased, and the ground motion or support structure (or structure) There is a problem that an abnormal displacement may occur. Here, the natural frequency means the frequency of a building, a bridge, a structure, or a mechanical part. Likewise, the tower also has a constant natural frequency. If the frequency of the wind blowing around the tower coincides with the natural frequency of the tower (i.e., resonates), an accident that an abnormal displacement occurs or collapses in the tower There is a problem that can occur.

The support structure of the wind turbine is composed of a support tower and a foundation. Therefore, the support structure can not be completely bonded due to the bonding of heterogeneous materials, and cracks or protrusions between the tower and the foundation may occur due to generation of thrust due to rotation as well as normal environmental load (wind load) of the wind turbine, There is a possibility that conduction is possible due to loss of frictional force and bearing force between the tower and foundation.

Therefore, in the past, a dial gauge was installed on the outside of the tower so that the behavior between the foundation and the tower could be measured in the field, but it was cumbersome and impossible to monitor at all times.

Korean Patent Publication No. 10-2015-0032395 (published on March 26, 2015)

Embodiments of the present invention provide a tilt sensing device and a control method of a vertical structure that can accurately determine the behavior of a wind turbine or a vertical structure installed on a foundation in advance to secure reliability of the facility and prevent an accident.

According to an aspect of the present invention, there is provided an information processing apparatus comprising: a first sensor for detecting an absolute inclination of a foundation located on a ground; A second sensor fixed at the bottom of the foundation and spaced equidistantly in an inner circumferential direction of the vertical structure extending toward the upper portion to sense a relative inclination of the vertical structure viewed from the foundation; And a controller for receiving data sensed by the first sensor and determining whether the ground is abnormal according to the slope state of the foundation and whether the slope of the vertical structure is within a predetermined slope range by receiving data sensed by the second sensor A control unit for judging And a display unit for displaying a state of an abnormal state of the ground or a slope of the vertical structure when the slope of the ground is changed over a predetermined range, wherein the controller determines an absolute slope with respect to the foundation of the vertical structure.

Wherein the first sensor is a tilt sensor, and the second sensor is a non-contact type displacement sensor (LVDT).

And three sensors are provided in the inner circumferential direction of the vertical structure.

And the first sensor is located at the center of the upper surface of the foundation.

The first sensor includes a first tilt sensor located at the center of the top surface of the foundation; And an auxiliary sensor positioned symmetrically with respect to a radial edge of the base with respect to the first tilt sensor.

And the second sensor is located on the same line along the circumferential direction of the vertical structure.

The display unit is positioned around the second sensor of the vertical structure and is illuminated so that the operator can visually recognize the inclination of the vertical structure when the inclination of the vertical structure exceeds a predetermined set value.

According to an embodiment of the present invention, there is provided a method of detecting inclination of a foundation and a vertical structure, comprising the steps of: sensing an absolute slope of a foundation located on a ground; Sensing a relative tilt with respect to a vertical structure erected on the foundation along with the slope of the foundation; Determining whether the slope of the foundation corresponds to a normal state or not, and determining whether an absolute slope of the foundation of the vertical structure is normal or not; Displaying a slope state of the foundation or a position where a maximum deflection of the vertical structure occurs in accordance with a slope state of the foundation and a slope state of the vertical structure; And performing a maintenance or inspection on the base or the maximum deflection position of the vertical structure, wherein the step of determining whether the inclination of the foundation or the inclination of the vertical structure corresponds to the normal presence or absence includes: And a data value according to a current tilt angle of the vertical structure, and the angle data according to an absolute slope of the foundation of the vertical structure according to a data value of the foundation and the vertical structure And determines whether the state of the vertical structure is normal or not.

Wherein the step of sensing the absolute slope of the foundation is measured based on the ground on which the foundation is located.

The step of determining whether the slope of the foundation or the slope of the vertical structure corresponds to the normal state is characterized in that a tilted angle of the foundation and the vertical structure is calculated based on specific coordinate data among the measured coordinate data of the foundation and the vertical structure .

The step of determining whether the inclination of the foundation or the inclination of the vertical structure corresponds to the normal presence or absence may be determined by assuming that the inclination of the vertical structure is A and when the inclination of the foundation is B, The A is determined to be in a state exceeding the reference value of the set slope, and when it is determined that the slope of B is within the reference value of the set slope, the A and B are determined based on any one of the axes on the X axis or the Y axis or the Z axis The vertical structure is determined to be in a safe state and the vertical structure is determined to require maintenance or inspection if the current state of the vertical structure inclination falls within a set slope when the detected inclination is added.

The step of determining whether the slope of the foundation or the slope of the vertical structure corresponds to a normal state may be determined by assuming that the slope of the vertical structure is A and that the slope of A is within a set slope when the slope of the foundation is B And if B exceeds a reference value of the set slope, the B judges that the slope exceeds the reference value of the set slope, and if A and B are determined on the basis of any one of X axis, Y axis, or Z axis The vertical structure is determined to be in a safe state when the current state of the slope of the vertical structure falls within a set slope when the detected slopes are added, and the foundation is determined to require maintenance or inspection.

The step of determining whether the slope of the foundation or the slope of the vertical structure corresponds to a normal state may be determined by assuming that the slope of the vertical structure is A and the slope of the foundation is B, It is determined that the current state of the slope of the vertical structure exceeds the set slope when the slopes detected based on any one of the axes on the X-axis, the Y-axis, or the Z-axis are added to the A and B The vertical structure is determined to require maintenance or inspection.

Wherein the step of displaying the positional state in which the maximum deflection of the vertical structure is generated includes the step of receiving the coordinate data of the position where the maximum deflection of the vertical structure is generated and determining the position of the vertical structure; And a step of visually or audibly recognizing the display unit provided at the maximum deflection position of the vertical structure.

The embodiments of the present invention can accurately determine the tilted state of the wind turbine according to the state of the ground or foundation, so that it is possible to accurately grasp the maintenance time and the maintenance time according to the long-term use.

Embodiments of the present invention can precisely detect the inclination of the ground surface, the inclination of the foundation, and the inclination of the vertical structure, thereby accurately grasping the problematic object, thereby improving the workability and efficiency of the operator.

1 to 3 are views showing the configuration of a tilt sensing apparatus for a vertical structure according to an embodiment of the present invention.
4 is a flowchart illustrating a tilt sensing method for a foundation and a vertical structure according to an embodiment of the present invention.
5 to 7 are views briefly showing respective embodiments according to a tilted state of a foundation and a vertical structure according to an embodiment of the present invention.
8 is a view showing a maximum deflection position detected by a tilt sensing method of a foundation and a vertical structure according to an embodiment of the present invention.
9 is a graph showing a monitoring state according to a change in slope with time according to a tilt detection method of a foundation and a vertical structure according to an embodiment of the present invention.

A tilt sensing apparatus for a vertical structure according to an embodiment of the present invention will be described with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a tilt sensing apparatus for a vertical structure according to an embodiment of the present invention; FIG.

Referring to FIGS. 1 to 3, when detecting the tilt state of the wind turbine installed on the ground, the tilt sensing device of the vertical structure according to the embodiment of the present invention determines whether the tilt of the wind turbine is varied due to the settlement of the ground, It is necessary to precisely monitor whether the tilt of the wind turbine itself is tilted in a specific direction and judge whether the tilted condition is correct or not.

The first sensor 100 senses the inclination of the foundation 2 positioned on the ground and the vertical structure 4 extending downward from the base 2. The vertical sensor 4 detects the inclination of the foundation 2, A second sensor 200 arranged at regular intervals in the inner circumferential direction of the vertical structure 4 to sense the inclination of the vertical structure 4 and a second sensor 200 receiving data sensed by the first sensor 100, A control unit 300 receiving the data detected by the second sensor 200 and determining whether the inclination of the vertical structure 4 is within a predetermined slope range, And a display unit (400) for displaying the state of the vertical structure (4) when the inclination of the vertical structure (4) fluctuates over a predetermined range.

The first sensor 100 is a tilt sensor and the second sensor is a non-contact displacement sensor LVDT. In the case of the first sensor 100, the first sensor 100 is located at the center of the upper surface of the foundation 2, Detect the tilt.

For example, a tilt sensor is used as the first sensor 100, and the degree of tilt of the base 2 in the left or right direction is sensed and transmitted to the controller 300.

The first sensor 100 may be installed at the center of the upper surface of the foundation 2 to sense the inclination and may detect the inclination of the foundation 2 more accurately, A first tilt sensor 110 positioned at the center and an auxiliary sensor 120 positioned symmetrically in the radial direction of the base 2 with respect to the first tilt sensor 110 are provided.

Since the auxiliary sensor 120 is positioned symmetrically with respect to the first tilt sensor 110, it is possible to accurately sense in which direction the base 2 is inclined, thereby improving the reliability of the measured data, The current tilted state of the wind turbine can be detected and checked and repaired.

The second sensor 200 senses the inclination of the vertical structure 4 so that three mounting positions are located at equal intervals in the inner circumferential direction of the vertical structure 4 and a vertical distance from the base 2 And transmits tilt data of the vertical structure 4 to the controller 300. [

The second sensor 200 is an LVDT sensor. The LVDT sensor is used to measure the distance from the inside of the vertical structure 4 corresponding to the reference point to the upper surface of the column 2 corresponding to the measured object, The three-dimensional data of the vertical structure 4 can be obtained through the three LVDT sensors, and the obtained data can be calculated in the control unit 300 to accurately determine the tilted state of the current vertical structure 4. [

In this embodiment, since three LVDT sensors are disposed at intervals of 120 degrees in the inner circumferential direction of the vertical structure 4, even when the vertical structure 4 is tilted in a certain direction with respect to the location of the LVDT sensor Can be detected accurately. Accordingly, when the tower corresponding to the vertical structure 4 of the wind power generator is inclined in a specific direction due to erosion or cracking, it can be accurately detected and managed and checked. When the wind power generator is inclined in a specific direction, And the state can be accurately grasped.

The second sensor 200 is provided with a ruler (not shown) that is positioned on the same line along the circumferential direction of the vertical structure 4 and has a length adjacent to the vertical structure 4, It can be recognized.

The control unit 300 receives the data sensed by the first and second sensors 100 and 200 and calculates the tilt of the foundation 2 and the slope of the vertical structure 4 respectively. The slope of the foundation 2 and the vertical structure 4 is compared with a predetermined slope range.

In the case of a wind turbine generator, the amount of floating settling of the ground is defined as a specific angle. In the case of a wind turbine tower located on the ground, the wind turbine tower is also defined as a specific angle per meter. Therefore, The inclination of the vertical structure 4 can be accurately determined.

The display unit 400 includes a lamp that is positioned around the second sensor 200 of the vertical structure 2 and is illuminated so that the operator can visually recognize the inclination of the vertical structure 2 when the inclination of the vertical structure 2 exceeds a predetermined set value . In this case, a plurality of lamps are installed along the inner circumferential direction of the vertical structure 2, but not at one, and the lamps emit light when the maximum deflection occurs.

Therefore, the operator can confirm the state of the display part during the operation, accurately determine that the wind turbine is currently tilted in a specific direction, check it, or search for countermeasures.

A method of detecting a tilt of a vertical structure according to the present embodiment will be described with reference to the drawings.

Referring to FIG. 4 of the accompanying drawings, there is shown a step ST100 of detecting a slope of a foundation placed on the ground, a step ST100 of detecting an absolute slope of a foundation located on the ground, (ST300) of determining whether the slope of the foundation is normal or not and whether the absolute slope of the foundation of the vertical structure is normal or not (ST300) (ST400) in which a slope of the foundation is exceeded or a position where a maximum deflection of the vertical structure is generated is displayed according to a tilt state of the foundation and an inclination state of the vertical structure, (ST500) of performing a maintenance or inspection on the maximum deflection position.

In order to determine the inclination of the foundation (ST100), it is measured based on the ground on which the foundation is located, so that when the inclination of the foundation is accurately determined, whether the current state of the foundation is horizontal or inclined can be easily grasped.

The inclination of the foundation with respect to the vertical structure erected on the foundation together with the inclination of the foundation is necessary for monitoring while monitoring the current tilted state of the vertical structure (ST200). That is, the slope of the foundation and the slope of the vertical structure installed on the foundation are detected at the same time, so that the current state of the ground on which the foundation is located and the tilt state of the vertical structure can be sensed.

In order to determine whether the inclination of the foundation is normal or whether the absolute inclination of the foundation of the vertical structure is normal or not (ST300), the absolute inclination of the foundation and the relative inclination of the vertical structure And the absolute inclination of the foundation of the vertical structure to determine whether the current state of the foundation is in a normal state, determine whether the vertical structure is in a normal state, finally determine an absolute inclination of the foundation of the vertical structure, Respectively.

That is, whether the data is normal or not is independently determined according to the data value according to the current tilt angle of the foundation and the data value according to the current tilt angle of the vertical structure, and based on the data values of the foundation and the vertical structure, Is calculated to determine whether the state of the vertical structure is normal or not.

This will be described in more detail in the following three examples.

5, assuming that the slope of the foundation is detected at -11 degrees and the slope of the vertical structure is detected at 5 degrees, for example, when the slope of the foundation is set to ± 10 degrees, Since the slope of the foundation exceeds 10 degrees, the control unit judges that it is in the Fail state. Here, the meaning of Fail means that the slope is exceeded.

The vertical structure is considered to be stable because it is within the set slope range. Hereinafter, the slope of the vertical structure is assumed to be A, the slope of the foundation is assumed to be B, and the absolute slope of the foundation and the absolute slope of the foundation of the vertical structure are assumed to be C, hereinafter.

When the slope of A exceeds the set slope, A is judged as exceeding the reference slope of the set slope, and when it is determined that the slope of B is within the reference value of the set slope, When the current state of the inclination of the vertical structure falls within a predetermined slope when the inclination detected based on any one axis on the Y axis or the Z axis is added, the vertical structure is judged as a safe state, It is judged that the inspection is necessary.

If the slope of the foundation and the slope of the vertical structure are respectively inputted and calculated, the slope of C is calculated to -6 degrees, so that the vertical structure is safe, but it can be determined that maintenance is required. Therefore, it is possible to accurately determine that the ground is stable and inclined in a specific direction from the foundation.

6, it is determined that the slope of A is within the set slope, and when B exceeds the reference slope of the set slope, the B determines that the slope exceeds the reference value of the set slope. When the current state of the vertical structure inclination falls within a predetermined slope when the inclination detected based on any one of the X axis, the Y axis, and the Z axis is included, the vertical structure is determined to be in a safe state, Maintenance or inspection is necessary.

That is, if A is -6 degrees and B is 11 degrees, it can be determined that Fail has occurred in B. However, because C is calculated at 5 degrees, the vertical structure is safe, but it can be judged that maintenance is required. Therefore, the ground is stable, but it can be accurately judged that the vertical structure is inclined in a certain direction.

Referring to FIG. 7, when the slopes of A and B are determined to be within a predetermined slope, and the slopes of A and B are detected based on any one of axes on the X axis, Y axis, or Z axis If it is determined that the current state of the vertical structure inclination exceeds the set inclination, it is determined that the vertical structure needs maintenance or inspection.

That is, when A is -6 degrees and B is -5 degrees, both A and B are in a safe state, but since C is calculated at -11 degrees, it can be determined that maintenance is required because a failure has occurred.

Referring to FIG. 4 or 8, step ST400 of displaying the position where the maximum deflection of the vertical structure is generated may include receiving coordinate data of the position where the maximum deflection of the vertical structure occurred, (ST410) where the determination is made, and a step (ST420) in which the display unit provided at the maximum deflection position of the vertical structure is visually or acoustically recognizable.

The display unit may display the maximum deflection position for the embodiment of FIGS. 5 to 7 so that the operator can recognize the operation using the LED and the alarm unit at the same time, and the manager can display the data of the display unit on a separate server (not shown) And a communication network.

Referring to FIG. 9, in the present embodiment, the degree of inclination gradually increases when the time elapses after the wind turbine is installed. In this case, the accurate time and condition of the inspection of A, B, And warn the user when a certain slope is reached, or inform the operator that an error has occurred.

Therefore, power generation efficiency and safety for the wind turbine are improved. Note that the X axis is time and the Y axis is the slope.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

2: Foundation
4: Vertical structure
100: first sensor
200: second sensor
300:
400:

Claims (16)

A first sensor for sensing an absolute slope of a foundation located on the ground;
A lower end is fixed to the foundation, and is arranged at regular intervals in the inner circumferential direction of the vertical structure extending toward the upper part,
A second sensor for detecting a tilt;
And a controller for receiving data sensed by the first sensor and determining whether the ground is abnormal according to the slope state of the foundation and whether the slope of the vertical structure is within a predetermined slope range by receiving data sensed by the second sensor A control unit for judging And
And a display unit for displaying a status of the ground structure when the ground state is abnormal or the slope of the vertical structure is changed over a predetermined range,
Wherein the controller determines an absolute slope with respect to a foundation of the vertical structure. The method according to claim 1,
Wherein the first sensor is a tilt sensor, and the second sensor is a non-contact type displacement sensor (LVDT). The method according to claim 1,
Wherein the second sensor comprises:
Wherein the three tiles are provided in the inner circumferential direction of the vertical structure. The method according to claim 1,
Wherein the first sensor comprises:
Wherein the tilt sensor is located at the center of the upper surface of the foundation. The method according to claim 1,
Wherein the first sensor comprises:
A first tilt sensor located at the center of the top surface of the foundation;
And an auxiliary sensor positioned symmetrically with respect to the radial edge of the base with respect to the first tilt sensor. The method according to claim 1,
Wherein the second sensor comprises:
Wherein the tilt sensor is located on the same line along the circumferential direction of the vertical structure. delete The method according to claim 1,
The display unit includes:
Wherein the light emitting unit is located around the second sensor of the vertical structure and is illuminated so that the operator can visually recognize the inclination of the vertical structure when the inclination of the vertical structure exceeds a predetermined set value. Sensing an absolute slope of the ground located on the ground;
Sensing a relative tilt with respect to a vertical structure erected on the foundation along with the slope of the foundation;
Determining whether the slope of the foundation corresponds to a normal state or not, and determining whether an absolute slope of the foundation of the vertical structure is normal or not;
Displaying a slope state of the foundation or a position where a maximum deflection of the vertical structure occurs in accordance with a slope state of the foundation and a slope state of the vertical structure; And
And performing maintenance or inspection on the base or the maximum deflection position of the vertical structure,
The step of determining whether the slope of the foundation or the slope of the vertical structure corresponds to the normal state includes:
The data of the base structure and the data of the vertical structure are independently determined according to the data value according to the current tilt angle of the foundation and the data value according to the current tilt angle of the vertical structure, And determining whether the angle of the vertical structure corresponds to the normal state or not by calculating the angle data according to the absolute inclination. 10. The method of claim 9,
Wherein the step of sensing the absolute slope of the base comprises:
Wherein the measurement of the inclination of the foundation and the vertical structure is performed based on a ground on which the foundation is located. 10. The method of claim 9,
The step of determining whether the slope of the foundation or the slope of the vertical structure corresponds to the normal state includes:
Wherein the inclination angle of the foundation and the vertical structure is calculated based on specific coordinate data among the measured coordinate data of the foundation and the vertical structure. delete 10. The method of claim 9,
The step of determining whether the slope of the foundation or the slope of the vertical structure corresponds to the normal state includes:
Assuming that the slope of the vertical structure is A and the slope of the foundation is B,
When the slope of A exceeds the set slope, A determines that the slope exceeds the reference value of the set slope, and when it is determined that the slope of B is within the reference value of the set slope,
If the current state of the inclination of the vertical structure falls within a set slope when the inclination detected based on any one of the axes on the X axis, the Y axis, and the Z axis is added to A and B, the vertical structure is determined to be in a safe state ,
Wherein the vertical structure is determined to require maintenance or inspection. 10. The method of claim 9,
The step of determining whether the slope of the foundation or the slope of the vertical structure corresponds to the normal state includes:
Assuming that the slope of the vertical structure is A and the slope of the foundation is B,
It is determined that the slope of A is within the set slope, and when B exceeds the reference slope, the B is determined to be in a state of exceeding the reference value of the slope,
If the current state of the inclination of the vertical structure falls within a set slope when the inclination detected based on any one of the axes on the X axis, the Y axis, and the Z axis is added to A and B, the vertical structure is determined to be in a safe state ,
Characterized in that it is judged that maintenance or inspection is necessary for the foundation 10. The method of claim 9,
The step of determining whether the slope of the foundation or the slope of the vertical structure corresponds to the normal state includes:
Assuming that the slope of the vertical structure is A and the slope of the foundation is B,
It is determined that the slopes of A and B are within the set slope and the current state of the slope of the vertical structure when the slopes detected based on any one of the axes on the X axis or the Y axis or the Z axis is added to A and B And determining that the vertical structure is required to be maintained or inspected when it is determined that the slope exceeds a predetermined slope. 10. The method of claim 9,
Wherein the step of displaying the positional state in which the maximum deflection of the vertical structure occurs,
Receiving coordinate data of a position where the maximum deflection of the vertical structure is generated, and determining a position of the vertical structure;
And displaying the displayed information on the display unit provided at the maximum deflection position of the vertical structure so as to be visually or audibly recognizable.
KR1020150153169A 2015-11-02 2015-11-02 Method of vertical inclination of the structure detection and vertical inclination of the structure detection apparatus KR101665889B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150153169A KR101665889B1 (en) 2015-11-02 2015-11-02 Method of vertical inclination of the structure detection and vertical inclination of the structure detection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150153169A KR101665889B1 (en) 2015-11-02 2015-11-02 Method of vertical inclination of the structure detection and vertical inclination of the structure detection apparatus

Publications (1)

Publication Number Publication Date
KR101665889B1 true KR101665889B1 (en) 2016-10-12

Family

ID=57173559

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150153169A KR101665889B1 (en) 2015-11-02 2015-11-02 Method of vertical inclination of the structure detection and vertical inclination of the structure detection apparatus

Country Status (1)

Country Link
KR (1) KR101665889B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050108290A (en) * 2004-05-12 2005-11-16 이근호 Apparatus, system, and method for measuring displacement of structure
KR20130063649A (en) * 2011-12-07 2013-06-17 한전케이디엔주식회사 Basis block for a wind power plant
KR20150032395A (en) 2013-09-16 2015-03-26 한국남부발전 주식회사 Wind turbine monitoring system to detect foundation displacement and abnormal structural movement during operation
KR20150110123A (en) * 2014-03-24 2015-10-02 홍석주 Level Gauge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050108290A (en) * 2004-05-12 2005-11-16 이근호 Apparatus, system, and method for measuring displacement of structure
KR20130063649A (en) * 2011-12-07 2013-06-17 한전케이디엔주식회사 Basis block for a wind power plant
KR20150032395A (en) 2013-09-16 2015-03-26 한국남부발전 주식회사 Wind turbine monitoring system to detect foundation displacement and abnormal structural movement during operation
KR20150110123A (en) * 2014-03-24 2015-10-02 홍석주 Level Gauge

Similar Documents

Publication Publication Date Title
CN101622447B (en) Collision warning system for a wind energy installation
JP4231291B2 (en) Pylon vibration monitoring
EP2635806B1 (en) System and method for identifying the likelihood of a tower strike where a rotor blade strikes the tower of a wind turbine
CN101971109B (en) A method and a control system for controlling a wind turbine
EP2239462A1 (en) Method and arrangement to measure the deflection of a wind-turbine blade
CN110621959A (en) System and method for monitoring wind turbine blade deflection
EP2333318A2 (en) Monitoring joint efficiency in wind turbine rotor blades
CN108757343B (en) Wind generating set and detection method, device and system for operation conditions of wind generating set
CN102312779B (en) For controlling the method for the proximity sensor of wind turbine
KR20130046858A (en) Monitoring system for wind turbine blade and monitoring method using the same
EP2381098A2 (en) Method for measuring a rotational position of a rotor blade of a wind turbine and measuring device
US20170369287A1 (en) Method of monitoring crane safety and a system for monitoring crane safety
KR101529701B1 (en) Wind turbine monitoring system to detect foundation displacement and abnormal structural movement during operation
EP3232051A1 (en) Method and device for loading detection of blade of wind power turbine
KR20130055149A (en) Tower monitoring system for wind turbine and method thereof
JP6302353B2 (en) Crack occurrence detection apparatus and crack occurrence detection method
EP2290235B1 (en) Device and method for detecting the loading of pivoted rotor blades
EP2532885B1 (en) Wind turbine comprising an electric generator
KR101665889B1 (en) Method of vertical inclination of the structure detection and vertical inclination of the structure detection apparatus
WO2022057224A1 (en) Monitoring system and monitoring method for wind-assisted rotor
CN108825447B (en) Wind turbine monitoring method and system
CN201607313U (en) Laser deflection measurement instrument
CN207598434U (en) A kind of offshore wind farm set tower drum and the safe on-Line Monitor Device of pile foundation
EP3237753B1 (en) A method of operating a wind turbine
CN112832959B (en) Method and system for monitoring foundation safety condition of wind generating set

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20190930

Year of fee payment: 4