KR101046649B1 - Marine wind power generation facility for automatically amending slope in operation - Google Patents

Abstract

PURPOSE: A marine wind power generating facility for revising a gradient automatically in operation is provided to revise a gradient of a marine foundation structure with wires connected to anchors installed around a suction pile using winches and underwater pumps if a marine wind power generating facility is inclined more than the permitted limit due to strong waves or wind. CONSTITUTION: A marine wind power generating facility(1) for revising a gradient automatically in operation comprises: a suction pile(10) installed to the seabed; a marine foundation structure(20) installed on the suction pile and provided with plural winches on the outside; plural anchors(30) installed to the seabed around the suction pile and installed radially around the suction pile; plural wires(40) connecting the anchors and the winches of the marine foundation structure; a measurement sensor unit(50) installed to the inside of the marine foundation structure to measure a gradient of the marine foundation structure; and a controller(60) checking the inclined direction of the marine foundation structure if the measured value of the measurement sensor unit exceeds the standard value, and generating pullout capacity in the opposite direction and revising the gradient of the marine foundation structure.

Description

MARINE WIND POWER GENERATION FACILITY FOR AUTOMATICALLY AMENDING SLOPE IN OPERATION}

The present invention relates to an offshore wind power plant that automatically corrects the inclination during common use, and in particular, when the inclination of the offshore wind power plant is out of the reference value during use, the winch and the water pump connected to the anchor installed around the suction pile The present invention relates to an offshore wind power plant that automatically corrects the slope of a public load to correct the slope of an offshore wind power plant.

Offshore wind power is a method of generating electricity by installing wind turbines in water bodies such as lakes, fjord topography, and coastal areas, and converting the kinetic energy of the wind blowing there into mechanical energy by rotating blades.

By the end of 2008, the total cumulative offshore wind power capacity was 1,473 MW, just over 1% of the total wind power capacity, and in 2008, 350 MW was added, equivalent to a 30% increase.

The advantage of offshore wind power is that it is not easy to find an area where wind turbines can be installed in a country with a narrow land. In other words, in the case of onshore wind power, there is a limit to the installation site. On the other hand, the offshore is well secured, allowing the construction of large-scale wind farms.

In addition, the offshore wind power can be maintained by 1.5 ~ 2 times higher than the onshore wind power generation under similar conditions, because the wind turbulence and the wind speed change according to the height and direction are small due to the reduction of obstacles. Since power generation is installed offshore, problems such as noise and visual pressure caused by the enlargement of wind turbines can be solved.

And, the offshore wind farms produce outstanding scenery. For example, Denmark's Middelgrunden is known for its success in creating a world-class offshore wind farm and is popular not only for power generation but also for sightseeing tours. A wind turbine support submerged in seawater serves as a good breeding ground for fish and seabed organisms. The catch is increasing and the wind turbine support above seawater serves as a shelter for migratory birds.

Offshore wind farms are largely divided into turbines and foundations.

First, turbines basically apply the same technology as onshore wind turbines. It has a lifespan of about 20 years and is applied to wind turbines larger than 3 ~ 5MW which are larger than onshore. Each element is designed and coated to prevent corrosion damage from salt.

And, Foundation can be explained by dividing into four representative types.

Concrete caisson type is used for early offshore wind farms because of its ease of manufacture and installation. It has been applied to Vindeby, Middelgrunden offshore wind farms, etc. It can be used at relatively shallow depths of 6 ~ 10m and maintains its position due to friction between its own weight and the sea floor. Foundation diameter is 12 ~ 15m.

The monopile type is the most basic offshore wind farm complex currently used and can be installed at a depth of 25 ~ 30m. It is applied to Horns Rev, North Hoyle offshore wind farm, etc., and it is economical when used in large-scale complexes by driving or fixing large diameter piles on the sea floor. This is good. Foundation diameter is 3 ~ 3.5m.

 The jacket type is a type that is showing much interest in the offshore wind farm holding countries and is being demonstrated, and can be installed at a depth of 20 ~ 80m. This type, applied in the UK's "The Talisman Beatrice Wind Farm Demonstrator" project, is supported by a jacketed structure and secured to the seabed by piles or piles. It is a structure of aquatic deep ocean and it has high performance and high reliability, and economical when it is used for constructing a large complex like the monopile type.

 Floating type is an essential task of future deep sea wind power generation. Floating type is being studied by many wind companies to be installed at a depth of 40 ~ 900m.

However, these offshore wind turbines are affected by strong waves or winds due to typhoons, tsunamis, etc. after installation, and are inclined by wave power or wind, and have a problem of overturning when the degree of tilt is severe.

The present invention is to solve the above problems, when the offshore wind power facilities are inclined more than the allowable by a strong wave or wind caused by a typhoon, tsunami, etc., the wire connected to the anchor installed around the suction pile It is an object of the present invention to provide an offshore wind power plant that automatically corrects the slope of a common load that uses a winch and a submersible pump.

Features of the present invention for achieving the above object,

A suction file installed on the sea bottom; A marine foundation structure installed above the suction pile and having a plurality of winches installed outside; A plurality of anchors installed on a sea bottom surface of the suction pile and radially installed around the suction pile; A plurality of wires interconnecting the anchor and the winch of the offshore foundation structure; A measurement sensor unit installed inside the marine foundation structure to measure an inclination of the marine foundation structure; And a controller configured to check the inclination direction of the marine foundation structure when the measured value of the measurement sensor unit exceeds a reference value, and to generate a pulling force in an inclined opposite direction to correct the inclination of the marine foundation structure. .

Here, the suction pile is formed of a double wall structure so that the second space portion is provided on the outside of the first space portion and the first space portion in the center, the first submersible pump which is installed on the upper surface in connection with the first space portion And, in conjunction with the second space portion is provided with a second submersible pump installed on its upper surface, respectively.

Here, the anchor is a suction pile or a suction pile anchor, and a wire loop is formed on a surface corresponding to the suction pile, and the maximum traction resistance ability is inserted after insertion into the sea bottom in a state where the wire is bound to the wire ring. Installation is fixed in a state inclined at an angle of 1 ~ 80 ° to the outside on the basis of the suction file.

Here, the measurement sensor unit is installed to each measuring sensor to form a right angle with respect to the center point of the marine foundation structure.

Here, the winch is provided with a torque meter or a load cell on one side.

Here, the controller measures whether the allowable tensile force of the wire is exceeded through the value measured at the torque meter or load cell of the winch when drawing the wire and anchor, and generates an alarm when the allowable tensile force is exceeded. .

Here, the controller operates the second submersible pump of the suction pile when the slope is corrected to supply seawater to the second space portion to relieve the negative pressure generated in the suction pile by introducing seawater into the first space portion. After the slope correction, the first submersible pump is operated to remove the seawater introduced into the first space part.

According to the offshore wind power facility that automatically corrects the slope of the present inventors configured as described above, the suction file when the offshore wind power plant is inclined beyond the allowable value by the influence of strong waves or wind due to typhoons, tsunamis, etc. There is an advantage that the slope can be corrected by using the winch and the water pump connected to the anchor installed around the.

Figure 1 is a side cross-sectional view showing the configuration of the offshore wind power plant for automatically correcting the slope in common use according to the present invention.
2A and 2B are partial cross-sectional views illustrating a configuration of an offshore wind power plant that automatically corrects a slope during common use according to the present invention.
3 and 4 are explanatory diagrams for explaining the operation of the offshore wind power plant for automatically correcting the slope in common use according to the present invention.

Hereinafter, with reference to the accompanying drawings, the configuration of the offshore wind power facilities for automatically correcting the slope of the common load according to the present invention will be described in detail.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

1 is a side cross-sectional view showing a configuration of an offshore wind power plant for automatically correcting the in-use slope according to the present invention, Figures 2a and 2b is an offshore wind power plant for automatically correcting the inclination of the common load in accordance with the present invention Partial cross-sectional view showing the configuration.

1 to 2B, the offshore wind power plant 1 that automatically corrects the in-use slope according to the present invention includes a suction pile 10, an offshore foundation structure 20, an anchor 30 and , The wire 40, the measurement sensor unit 50, and the controller 60.

First, the suction pile 10 is formed in a hollow tube structure in which the lower portion is opened, and is installed on the sea bottom. Here, the suction pile 10 is formed in a double wall structure such that the second space portion 13 is provided outside the first space portion 11 and the first space portion 11 in the center, and the first space portion ( 11 is provided with a first submersible pump 15 installed on an upper surface thereof and a second submersible pump 17 installed on an upper surface thereof in association with a second space 13. At this time, the solenoid valves V1 and V2 are preferably provided on the connection line between the first submersible pump 15 and the second submersible pump 17.

And, the marine foundation structure 20 is a normal structure including the turbine 21 is installed perpendicular to the upper surface of the suction pile (10). Here, the marine foundation structure 20 is installed at the position corresponding to the anchor 30 to be described later, the winch 23 at the water level and the height without interference, each winch 23 is a torque meter or load cell ( 23a). Here, the through hole 25 is formed on one side of the marine foundation structure 20 so that seawater flows in.

In addition, the anchor 30 is installed on the sea bottom that is the periphery of the suction pile 10, it is installed radially around the suction pile (10). Here, the anchor 30 is preferably a suction pile or a suction pile anchor, and the suction pile anchor has a known configuration in which the suction pile and the anchor are connected to each other by the suction pressure of the suction pile while the anchor is interconnected through the hydraulic jack. After inserting in, the anchor is separated by the hydraulic jack and the suction pile is discharged to the outside to install only the anchor on the sea floor. Here, the anchor 30 is formed on the surface corresponding to the suction pile 10, the wire hook 31 is formed, the wire hook 31 is connected to the sea bottom in the state in which the wire 40 to be described below After insertion, it is preferable to be installed and fixed in an inclined state at an angle θ1 of 1 to 80 ° to the outside with respect to the suction pile 10 based on the maximum traction resistance ability. Here, at least two anchors 30 may be installed around the suction pile 10, and three or more anchors 30 may be installed as illustrated in FIGS. 2A and 2B.

In addition, the wire 40 interconnects the wire ring 31 of each anchor 30 and the winch 23 of the marine foundation structure 20 so as to correspond 1: 1.

On the other hand, the measurement sensor unit 50 is installed inside the marine foundation structure 20 to measure the inclination of the marine foundation structure 20. Here, the measurement sensor unit 50 is installed to each of the measurement sensor 51 to form a right angle with respect to the center point (C) of the marine foundation structure 20, as shown in Figure 2, the measurement sensor 51 It is preferable that it is an inclinometer and each measuring sensor 51 maintains a right angle. Here, the measurement sensor unit 50 is preferably installed at a position higher than the inner sea surface of the marine foundation structure 20.

And, the controller 60 is inclined direction of the offshore foundation structure 20 when the measured value measured by each measuring sensor 51 of the measuring sensor unit 50 during the operation of the offshore wind power plant 1 exceeds the reference value Check and generate the pulling force in the opposite direction inclined, that is, to control the winch 23 of the corresponding position to draw the wire 40 to generate the pulling force to the anchor 30 to correct the inclination of the offshore foundation structure 20 . Here, the controller 60 pulls the wire 40 and pulls the anchor 30 to determine whether it exceeds the allowable tensile force of the wire 40 through the torque meter of the winch 23 or the value measured in the load cell 23a. It measures whether or not and raises an alarm when the allowable tensile force is exceeded and informs the administrator. Here, the controller 60 supplies the seawater to the second space portion 13 by operating the second submersible pump 17 of the suction pile 10 at the time of the slope correction to supply the seawater into the first space portion 11. The negative pressure generated in the suction pile 10 is reduced by the inflow, and the first submersible pump 15 is operated after the slope correction to remove the seawater introduced into the first space 11.

Meanwhile, the winch 23, the torque meter or the load cell 23a, the measurement sensor unit 50, and the controller 60 of the offshore wind power plant 1 automatically correcting the in-use slope according to the present invention. Each component that requires a power source preferably uses electric energy generated by the turbine 21.

Hereinafter, with reference to the accompanying drawings, the operation of the offshore wind power facility for automatically correcting the in-use slope according to the present invention will be described in detail.

3 and 4 are explanatory diagrams for explaining the operation of the offshore wind power plant for automatically correcting the slope in common use according to the present invention.

First, in the state where the offshore wind power facility 1 is installed and operated, the controller 60 measures the inclined direction of the offshore foundation structure 20 through each of the measuring sensors 51 of the measuring sensor unit 50. At this time, the controller 60 compares the inclination values measured by the measurement sensor 51 installed to form a right angle with respect to the center point C of the marine foundation structure 20, and compares the inclination direction and the inclination angle with the reference inclination value. Measure

When the inclined direction and the inclined angle of the marine foundation structure 20 are measured, the controller 60 generates a drawing force in the opposite direction inclined based on this, that is, controls the winch 23 at the corresponding position to control the wire ( 40 to draw the force to the anchor 30 to correct the inclination of the marine foundation structure 20, the second submersible pump 17 of the suction pile 10 is operated before the general force is generated Seawater is supplied to 13 to introduce seawater into the first space 11 to relieve the negative pressure generated in the suction pile 10.

Meanwhile, FIG. 3 illustrates a state in which the anchor 30 and the winch 23 are installed every 90 ° based on the suction file 10.

Referring to this, when there are four anchors 30, the controller 60 operates each component as shown in Table 1 below.

In addition, when there are three anchors 30, the controller 60 operates each component as shown in Table 2 below.

During the above process, if the measured value measured by each measuring sensor 51 is maintained within the reference value range, the controller 60 ends the corresponding operation to end the correction of the tilt.

Then, the controller 60 operates the first submersible pump 15 to remove the seawater introduced into the first space 11 to apply vertical pressure to the suction pile 10.

As those skilled in the art would realize, the described embodiments may be modified in various ways, all without departing from the spirit or scope of the present invention. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

10: suction pile 20: marine foundation structure
30: anchor 40: wire
50: measuring sensor 60: controller

Claims (7)

A suction file installed on the sea bottom;
A marine foundation structure installed above the suction pile and having a plurality of winches installed outside;
A plurality of anchors installed on a sea bottom surface of the suction pile and radially installed around the suction pile;
A plurality of wires interconnecting the anchor and the winch of the offshore foundation structure;
A measurement sensor unit installed inside the marine foundation structure to measure an inclination of the marine foundation structure; And
And a controller configured to check the inclination direction of the marine foundation structure when the measured value of the measuring sensor unit exceeds a reference value, and to generate a pulling force in an inclined opposite direction to correct the inclination of the marine foundation structure. Offshore wind power plants that automatically compensate for medium slopes. The method of claim 1,
The suction file is,
A first submersible pump is formed in a double wall structure so that a second space portion is provided outside the first space portion and the first space portion, and is installed on an upper surface thereof in association with the first space portion, and the second space portion. Offshore wind power facilities for automatically correcting the slope of the common load, characterized in that each is provided in conjunction with the second submersible pump installed on its upper surface. The method of claim 1,
The anchor,
A suction pile or a suction pile anchor, and a wire ring is formed on a surface corresponding to the suction file, and the suction file is inserted into the bottom surface in a state in which the wire is bound to the wire ring to exhibit maximum traction resistance. Offshore wind power facility that automatically corrects the slope in common use, characterized in that the installation is fixed in a state inclined at an angle of 1 ~ 80 ° outward. The method of claim 1,
The measuring sensor unit,
Offshore wind power facility for automatically correcting the inclination of the common load, characterized in that to install each measuring sensor to form a right angle to the center point of the offshore foundation structure. The method of claim 1,
The winch,
Offshore wind power facility that automatically corrects the slope of the common load, characterized in that provided with a torque meter or a load cell on one side. The method of claim 5, wherein
The controller,
When drawing the wire and the anchor is measured whether or not exceeding the allowable tensile force of the wire through the value measured in the torque meter or load cell of the winch, the common load slope characterized in that to generate an alarm when the allowable tensile force is exceeded Offshore wind power plants that automatically calibrate. The method of claim 2,
The controller,
Operating the second submersible pump of the suction pile during slope correction to supply seawater to the second space portion to introduce seawater into the first space portion to relieve negative pressure generated in the suction pile, and to correct the first after slope correction. An offshore wind power facility that automatically corrects the slope of the common load, characterized in that for removing the seawater introduced into the first space by operating a water pump.

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