A comprehensive limiting method applied to offshore wind farm installation project

Abstract

The application discloses a kind of comprehensive limiting methods applied to offshore wind farm installation engineering, it is related to offshore wind farm installation technical field, comprising: based on the arrangement characteristics of wind turbine in offshore wind farm micro-siting, determine the installation timing and limiting matrix of offshore wind farm;Based on the installation condition of offshore wind farm, build limiting assembly between the coordinates of pre-installed wind power and the target to be installed in the limiting matrix;The target to be installed is towed to the installation initial coordinate;Installation initial coordinate is the coordinate determined in limiting matrix based on installation timing;Based on limiting matrix and limiting assembly, the target to be installed is positioned and installed according to installation timing.The application alleviates the technical problems of complex installation process, large resource limitation and high engineering risk in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore wind farm installation, in particular to a comprehensive limiting method applied to offshore wind farm installation engineering. BACKGROUND

[0002] The traditional installation process of offshore converter stations, booster stations and wind power foundations is prone to multiple anchoring and ship anchor moving risks in positioning, installation mooring and installation cooperation, and has comprehensive problems such as complex installation process, resource limitation, engineering risk and huge cost. SUMMARY

[0003] The purpose of the present application is to provide a comprehensive limiting method applied to offshore wind farm installation engineering to solve at least one of the above technical problems.

[0004] In a first aspect, the embodiments of the present application provide a comprehensive limiting method applied to offshore wind farm installation engineering, comprising: determining the installation time sequence and the limiting matrix of the offshore wind farm based on the wind turbine arrangement characteristics in the micro-siting of the offshore wind farm; the limiting matrix is the relative position and connection relationship matrix between the pre-installed wind power foundation of the offshore wind farm and the target to be installed; the target to be installed includes the wind power foundation to be installed and the mounted facilities to be installed; based on the installation condition of the offshore wind farm, a limiting assembly is built between the coordinates of the pre-installed wind power foundation and the target to be installed in the limiting matrix; the limiting assembly includes the connecting facilities between the transportation facilities, installation facilities of the pre-installed wind power foundation and the target to be installed; the target to be installed is towed to the installation initial coordinates; the installation initial coordinates are the coordinates determined in the limiting matrix based on the installation time sequence; based on the limiting matrix and the limiting assembly, the target to be installed is limited and installed according to the installation time sequence.

[0005] Further, based on the wind turbine arrangement characteristics in the micro-siting of the offshore wind farm, the limiting matrix of the offshore wind farm is determined, comprising: determining a projection matrix based on the geodetic coordinates of the wind turbines per unit area or in a block; the block is the block where the offshore wind farm is located; designing an extreme condition matrix with the target to be installed as the center and the safe traction torque of the connecting assembly under extreme conditions as the radius; calculating a working matrix based on the non-interference range, multi-angle traction force limitation and connection assembly angle control strategy; determining the limiting matrix with the projection matrix, the extreme condition matrix and the working matrix as the boundary conditions.

[0006] Further, the limiting assembly comprises: a fixed tooling, a universal connector, a quick installation and release shackle, a traction cable, a signal cable, a turnover pulley and a traction winch.

[0007] Further, a limiting assembly is built between the pre-installed wind power foundation and the coordinates of the target to be installed in the limiting matrix, including: connecting one end of the towing cable to the limiting connector of the pre-installed wind power foundation through a mounting and unloading buckle, and dragging the other end of the towing cable to a pre-paved position and lowering it to the seabed wet storage; the wet storage end of the towing cable is provided with a signal float.

[0008] Further, based on the limiting matrix and the limiting assembly, the target to be installed is limited and installed according to the installation time sequence, including: respectively by multiple tugboats, the wet storage end of the pre-paved towing cable is salvaged through the signal float, and according to the angle requirement of the limiting matrix, the wet storage end of the towing cable is connected to the winch system of the engineering ship by using the signal cable; the engineering ship is a ship carrying the target to be installed; the working speed of the winch system is adjusted by using the wind power foundation angle in the limiting matrix and the tension of the towing cable to complete the cable winding and unwinding of the engineering ship, and then the coordinate adjustment of the engineering ship is realized; when the engineering ship approaches the target coordinate safety distance, the winch brake is started, the temporary berthing buffer is lowered, the pressure is started, the load operation and the foundation cutting and fixing operation are started, and the engineering ship movement state and environmental conditions are detected in real time; after the engineering ship movement state and the environmental conditions reach the preset range, the subsequent lifting operation or floating operation of the target to be installed is carried out.

[0009] The application provides a comprehensive limiting method applied to offshore wind farm installation engineering, which realizes accurate positioning, rapid berthing, comprehensive installation cooperation in the offshore wind farm by using offshore wind farm densification arrangement and wind power foundation frame, limiting matrix and limiting assembly, avoids multiple anchoring and ship anchor walking risks, and is more efficient, economical and integrated than traditional offshore converter station, booster station and wind power foundation installation process, and solves the problems of complex installation process, resource limitation, engineering risk and huge cost in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0011] Figure 1 A flowchart of a comprehensive limiting method applied to offshore wind farm installation engineering is provided for the embodiments of the present application;

[0012] Figure 2 A schematic diagram of a limiting assembly of offshore wind farm installation engineering is provided for the embodiments of the present application;

[0013] Figure 3 An L-shaped matrix schematic diagram of a limiting matrix of an offshore wind farm installation project is provided for an embodiment of the present application.

[0014] Figure 4 An X-shaped matrix schematic diagram of a limiting matrix of an offshore wind farm installation project is provided for an embodiment of the present application.

[0015] Figure 5 A Y-shaped matrix schematic diagram of a limiting matrix of an offshore wind farm installation project is provided for an embodiment of the present application.

[0016] Figure 6 A cross-shaped matrix schematic diagram of a limiting matrix of an offshore wind farm installation project is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0018] Embodiment one

[0019] Figure 1 is a flowchart of a comprehensive limiting method applied to an offshore wind farm installation project according to an embodiment of the present application. As shown in the figure, the method specifically includes the following steps: Figure 1

[0020] Step S102, based on the wind turbine arrangement features in the micro-siting of the offshore wind farm, determining the installation timing and the limiting matrix of the offshore wind farm; the limiting matrix is a relative position and connection relationship matrix between the pre-installed wind power foundation and the to-be-installed target of the offshore wind farm; the to-be-installed target includes a to-be-installed wind power foundation and a to-be-installed mounted facility.

[0021] Optionally, the to-be-installed mounted facility is a mounted facility of the wind power foundation, including an offshore converter station, an offshore booster station, etc.

[0022] Specifically, the wind turbine arrangement features include wind turbine arrangement distance and array model features.

[0023] Step S104, based on the installation conditions of the offshore wind farm, building a limiting assembly between the coordinates of the pre-installed wind power foundation and the to-be-installed target in the limiting matrix; the limiting assembly includes the connection facilities between the transportation facilities, installation facilities of the pre-installed wind power foundation and the to-be-installed target.

[0024] ​Specifically, in the embodiment of the present application, the comprehensive limiting matrix is determined by the control factors such as the azimuth control, relative distance and installation logic of the wind turbine generator within the unit area or block, and the limiting assembly between the wind power foundation in the matrix and the target to be installed is realized in combination with the installation working condition requirements. Among them, the limiting matrix is mainly based on the micro-siting of the wind farm, and the factors such as working condition torque, mooring selection and maximum intersection angle are used for comprehensive evaluation, and the evaluation basis focuses on the optimal solution of installation resources, construction period, environmental adaptation.

[0025] Specifically, the main function of the limiting assembly is to connect the transportation facilities and installation facilities of the pre-installed wind power foundation in the limiting matrix and the target to be installed, so as to realize the rapid movement and limiting adjustment of the transportation facilities or installation facilities in the limiting matrix.

[0026] Figure 2 It is a schematic diagram of a limiting assembly of an offshore wind farm installation engineering according to the embodiment of the present application. As shown in Figure 2 In the embodiment of the present application, the limiting assembly comprises: a fixed tool, a universal connector, a quick installation and release shackle, a traction cable, a signal cable, a turnover pulley and a traction winch.

[0027] Step S106, towing the target to be installed to the installation initial coordinate; the installation initial coordinate is a coordinate determined in the limiting matrix based on the installation time sequence.

[0028] Specifically, after the construction port completes the hoisting and towing of the offshore converter station, the offshore booster station and the wind power foundation to be installed on the engineering ship, and the connecting piece is welded and tested, finally a plurality of tugboats or tugboats are used to leave the port and tow, until the engineering ship reaches the installation initial coordinate.

[0029] Step S108, limiting and installing the target to be installed according to the installation time sequence based on the limiting matrix and the limiting assembly.

[0030] The present application provides a comprehensive limiting method applied to offshore wind farm installation engineering, which utilizes the dense arrangement of offshore wind farms and wind power foundation frames, realizes accurate positioning, rapid berthing and comprehensive installation cooperation in offshore wind farms through limiting matrix and limiting assembly, avoids multiple anchoring and ship anchor risk, and is more efficient, economical and integrated than traditional offshore converter station, booster station and wind power foundation installation process, which solves the problems of complex installation process, resource limitation, engineering risk and huge cost in the current technology.

[0031] Specifically, in the embodiment of the present application, the production mode of the limiting matrix is as follows:

[0032] Step S1021, determining the projection matrix based on the geodetic coordinates of the wind turbine generator within the unit area or block; the block is the block where the offshore wind farm is located;

[0033] Step S1022, designing an extreme working condition matrix with the target to be installed as the center and the safe traction torque of the connecting assembly under extreme working conditions as the radius;

[0034] Step S1023, calculating a working matrix based on the non-interference range, multi-angle traction force limitation, and connecting assembly angle control strategy;

[0035] Step S1024, determining a limiting matrix with the projection matrix, the extreme working condition matrix, and the working matrix as boundary conditions.

[0036] The type of the limiting matrix can be various patterns, which will be iterated under different installation processes, projection matrices, and working matrices. Optionally, the limiting matrix includes an L-type matrix, an X-type matrix, a Y-type matrix, and a cross-type matrix, as shown in Figures 3-6 .

[0037] Specifically, Figure 3 is an L-type matrix schematic diagram of a limiting matrix of an offshore wind farm installation project according to an embodiment of the present application. As shown in Figure 3 , the L-type matrix mainly forms a triangular matrix with two pre-installed wind power foundations and a target to be installed, and forms an L-type torque with two limiting assemblies, and the comprehensive limiting method steps are implemented.

[0038] Figure 4 is an X-type matrix schematic diagram of a limiting matrix of an offshore wind farm installation project according to an embodiment of the present application. As shown in Figure 4 , the X-type matrix mainly forms a four-edge radiation matrix with four pre-installed wind power foundations and a target to be installed, and forms an X-type torque with four limiting assemblies, and the comprehensive limiting method steps are implemented.

[0039] Figure 5 is a Y-type matrix schematic diagram of a limiting matrix of an offshore wind farm installation project according to an embodiment of the present application. As shown in Figure 5 , the Y-type matrix mainly forms a three-edge radiation matrix with three pre-installed wind power foundations and a target to be installed, and forms a Y-type torque with three limiting assemblies, and the comprehensive limiting method steps are implemented.

[0040] Figure 6 is a cross-type matrix schematic diagram of a limiting matrix of an offshore wind farm installation project according to an embodiment of the present application. As shown in Figure 6 , the cross-type matrix mainly forms a complex radiation matrix with no less than four pre-installed wind power foundations and a target to be installed, and forms a cross-type torque with no less than four limiting assemblies, and the comprehensive limiting method steps are implemented.

[0041] Specifically, step S104 further includes: connecting one end of the traction cable to the limiting connector of the pre-installed wind power foundation through the installation shackle, and dragging the other end of the traction cable to the pre-laying position and lowering it to the seabed for wet storage; a signal float is set at the wet storage end of the traction cable to facilitate the positioning and salvage of the engineering vessel.

[0042] Specifically, step S108 further includes the following steps:

[0043] In step S1081, multiple tugboats retrieve the wet storage end of the pre-laid traction cable using signal floats, and connect the wet storage end of the traction cable to the winch system of the engineering vessel using signal cables according to the angle requirements of the limit matrix; the engineering vessel is a ship carrying the target to be installed.

[0044] Step S1082: Using the wind power foundation angle and traction cable tension in the limit matrix, adjust the operating speed of the winch system to complete the cable retrieval and release of the engineering vessel, thereby realizing the coordinate adjustment of the engineering vessel.

[0045] Optionally, some operating conditions require the use of tugboats and various mooring methods to achieve precise adjustment of the engineering vessel's coordinates, stabilization, and emergency assistance. These various mooring methods include steel cables, anchor chains, and restraining cables. During precise movement, the engineering vessel monitors external factors such as wind and current within the restraining matrix, simultaneously performing accurate calculations and effective control.

[0046] Step S1083: When the engineering vessel approaches the target coordinate safe distance, activate the winch brake, lower the berthing buoy for temporary berthing and buffering, and simultaneously start the ballast removal operation and foundation cutting and fixing operation, while monitoring the movement status of the engineering vessel and environmental conditions in real time.

[0047] Optionally, the detection of the motion status and environmental conditions of the engineering vessel includes: positioning detection, tide detection, and detection of the engineering vessel's trim, heel, heave, pitch, roll and yaw.

[0048] Step S1084: After the motion state and environmental conditions of the engineering vessel reach the preset range, carry out subsequent hoisting or floating operations on the target to be installed.

[0049] Optionally, after the relevant installation work is completed, the winch of the engineering vessel is started to retrieve and release the mooring lines, the engineering vessel is positioned in open water, and tugboats are used to retrieve the mooring lines and decommission the engineering vessel.

[0050] Example 2

[0051] In a certain offshore wind farm in Bohai Sea, an offshore comprehensive utilization platform is planned to be installed in the center of four single-pile fixed wind power foundations. The upper module of the platform is a small truss structure with two decks and four columns, and the weight is relatively light. After being built on land, the platform is considered to be towed to the target position by a workboat for subsequent installation. The comprehensive positioning scheme of the installation project is as follows:

[0052] Firstly, based on the positioning target in the micro-siting, the surrounding of the four single-pile fixed wind power foundations has been built, the structural strength meets the requirements of the ultimate load, and the relative arrangement meets the installation distance, connection relationship and construction redundancy of the positioning matrix. Therefore, the four foundations are considered as the four pre-installed wind power foundations.

[0053] Secondly, according to the boundary conditions such as installation period, environmental conditions and construction resources, the positioning calculation and design are carried out. The comprehensive positioning direction is a four-edge radial cross matrix. The limitation of hydro-meteorological conditions during construction, overall tension control and torque optimization are mainly considered. The two positioning assemblies in the matrix direction are cross-set. Subsequently, based on the positioning matrix and design scheme, the positioning assembly facilities such as fixed tooling, universal connector, quick installation and release shackle, towing cable and signal cable are pre-installed and laid by a small ship.

[0054] After the platform module is built on land and towed and loaded on the ship, it is towed to the initial installation coordinates by a tugboat. The pre-laid towing cable is salvaged by a small workboat, and connected to the winch system by a signal cable. According to the foundation angle and towing cable tension in the positioning matrix, the winch operation is started. During the operation, the relevant data such as wind, tidal current, ship speed and winch tension value in the matrix need to be monitored in real time. When the workboat completely enters the projection range of the four wind power foundations, the flip pulley is started to make it face away from the two positioning assemblies in the matrix direction, and the force form is switched from active towing type to positioning control type.

[0055] Until the workboat approaches the target coordinates at a safe distance, the cable collection and cable laying winch is adaptively braked, the buffer ball and mooring system are lowered to complete the temporary berthing operation, and the subsequent engineering operation is carried out. At this point, the comprehensive positioning operation of the offshore wind farm installation project has been completed.

[0056] It is apparent to those skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments, and that the application can be implemented in other specific forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered exemplary and non-limiting, and the scope of the application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be encompassed by the application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0057] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A comprehensive limiting method applied to offshore wind farm installation projects, characterized in that, include: Based on the wind turbine layout characteristics in the micro-site selection of offshore wind farms, the installation sequence and constraint matrix of the offshore wind farm are determined. The limiting matrix is ​​a matrix representing the relative positions and connections between the pre-installed wind turbine foundations and the target to be installed in the offshore wind farm; the target to be installed includes the wind turbine foundations to be installed and the mounting facilities to be installed. Based on the installation conditions of the offshore wind farm, a limiting assembly is constructed between the pre-installed wind turbine foundation and the target to be installed at the coordinates in the limiting matrix; the limiting assembly includes the transportation facilities and installation facilities between the pre-installed wind turbine foundation and the target to be installed. The target to be installed is towed to the initial installation coordinates; the initial installation coordinates are the coordinates determined in the limiting matrix based on the installation sequence; Based on the limiting matrix and the limiting assembly, the target to be installed is limited and installed according to the installation sequence; Based on the wind turbine layout characteristics in the micro-situation of offshore wind farms, the constraint matrix of the offshore wind farm is determined, including: The projection matrix is ​​determined based on the geodetic coordinates of the wind turbines within a unit area or block; the block refers to the area where the offshore wind farm is located. With the target to be installed as the center and the safe traction torque of the connection assembly under extreme conditions as the radius, design an extreme condition matrix; Based on the interference-free range, multi-angle traction force limitation, and connection assembly angle control strategy, the working matrix is ​​calculated; The limiting matrix is ​​determined using the projection matrix, the extreme working condition matrix, and the working matrix as boundary conditions; The limiting matrix includes L-shaped matrix, X-shaped matrix, Y-shaped matrix and cross matrix.

2. The method according to claim 1, characterized in that: The limiting assembly includes: a fixing fixture, a universal connector, a quick-release shackle, a traction cable, a signal cable, a tilting pulley, and a traction winch.

3. The method according to claim 2, characterized in that: The process of constructing a limiting assembly between the pre-installed wind turbine foundation and the target to be installed in the limiting matrix includes: connecting one end of the traction cable to the limiting connector of the pre-installed wind turbine foundation through a shackle, and dragging the other end of the traction cable to the pre-laying position and lowering it to the seabed for wet storage; a signal float is installed at the wet storage end of the traction cable.

4. The method according to claim 3, characterized in that: Based on the limiting matrix and the limiting assembly, the target to be installed is limited and installed according to the installation sequence, including: Multiple tugboats retrieve the wet end of the pre-laid traction cable via the signal buoy, and connect the wet end of the traction cable to the winch system of the engineering vessel using the signal cable according to the angle requirements of the limiting matrix; the engineering vessel is the ship carrying the target to be installed. By utilizing the wind power foundation angle and traction cable tension in the limiting matrix, the operating speed of the winch system is adjusted to complete the cable retrieval and release of the engineering vessel, thereby achieving the coordinate adjustment of the engineering vessel. When the engineering vessel approaches the target coordinates at a safe distance, the winch brake is activated, the buoy is lowered for temporary mooring and buffering, and the ballast removal and foundation cutting and fixing operations are initiated. The movement status of the engineering vessel and environmental conditions are monitored in real time. Once the movement of the engineering vessel and the environmental conditions reach a preset range, subsequent hoisting or floating operations will be carried out on the target to be installed.

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