CN-122009390-A - Pre-anchoring control method and device for floating photovoltaic platform

CN122009390ACN 122009390 ACN122009390 ACN 122009390ACN-122009390-A

Abstract

The application provides a pre-anchoring control method and device for a floating photovoltaic platform, which are used for acquiring design parameters and real-time environment dynamics parameters of pre-anchoring operation, predicting a space motion track and a predicted bottoming point of a corresponding anchor body in the process of sinking an anchor chain from a sea surface launching point to a sea bed through an anchor chain-environment coupling model based on the design parameters and the real-time environment dynamics parameters, carrying out reverse simulation calculation by taking the design coordinates as constraint conditions when the predicted bottoming point deviates from the design coordinates in the design parameters, combining the real-time environment dynamics parameters, iteratively correcting the position of the sea surface launching point until the obtained predicted bottoming point meets a preset deviation range, determining the sea surface launching point as an optimal launching point, and controlling the execution of anchoring and buoy launching operation based on the optimal launching point. The method realizes accurate bottoming of the anchor body and accurate layout of the buoy.

Inventors

YAO WEI
WANG YUFEI
CHEN JIANJUN
ZHANG HUAN
Shi Qiayin
CHENG BIN
HUANG KANGHUI
LEI YU
LIU RUICHAO
GUO XIAOHUI

Assignees

华能(福建漳州)能源有限责任公司
中国华能集团清洁能源技术研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20260327

Claims (10)

1. A pre-anchorage control method for a floating photovoltaic platform, the method comprising: Acquiring design parameters and real-time environmental dynamic parameters of pre-anchorage operation; based on the design parameters and the real-time environmental dynamic parameters, predicting a space motion track and a predicted bottoming point of a corresponding anchor body in the process that an anchor chain is settled from a sea surface launching point to a sea bed through an anchor chain-environment coupling model; When deviation exists between the predicted bottoming point and the design coordinates in the design parameters, the design coordinates are used as constraint conditions, reverse simulation calculation is conducted by combining the real-time environment dynamics parameters, the position of the sea surface launching point is corrected in an iterative mode until the obtained predicted bottoming point meets a preset deviation range, and the sea surface launching point is determined to be the optimal launching point; and controlling and executing the throwing operation of the anchoring and the buoy based on the optimal throwing point.
2. The method of claim 1, wherein the design parameters further comprise design water depth, physical parameters of the anchor chain, and subsea geological data; The real-time environmental dynamic parameters are obtained through real-time monitoring of a sensor system integrated on anchor boat, and include the real-time position and navigational speed of anchor boat, real-time sea surface flow velocity and flow direction data, real-time wave parameters and real-time wind speed and wind direction.
3. The method of claim 2, wherein predicting the spatial motion trajectory and predicted bottoming point of the corresponding anchor during the settling of the anchor chain from a surface launch point to the seabed comprises: The anchor chain is discretized into a plurality of mass points connected by a mass-free rod, and a kinetic equation containing mass, position and speed parameters is established for each mass point; substituting the environmental load born by each particle calculated based on the real-time environmental dynamic parameters into the dynamic equation as an external force term; setting a preset time step by taking the sea surface launching point as the initial position of a top particle of the anchor chain, and iteratively solving a kinetic equation substituted into an environmental load by a numerical integration method to obtain the spatial position change of each particle along with time so as to obtain the spatial motion track of the anchor chain in a three-dimensional space; and calculating a predicted bottoming point of the anchor body according to the end point of the space motion track.
4. A method according to claim 3, wherein obtaining an optimal point of release for the anchor to actually land at the design coordinates, requiring release of the chain from the sea surface, comprises: setting the design coordinates as boundary conditions of mass points at the tail ends of anchors in the model; and taking the real-time environmental dynamic parameters as load input, carrying out inverse numerical integration on the dynamic equation of the substituted environmental load with a set negative time step length, and carrying out inversion solving to obtain the sea surface position of the corresponding anchor body meeting the boundary condition, wherein the sea surface position is taken as the optimal putting point.
5. The method of claim 1, wherein after controlling the performing of the anchor operation based on the optimal delivery point, the method further comprises: And receiving actual coordinates fed back by the buoy through a built-in positioning and communication device, comparing the actual coordinates with the design coordinates, calculating position deviation, and generating an operation precision report containing the position deviation.
6. The method of claim 5, wherein the method further comprises: and taking the position deviation in the operation precision report as training data to optimize the parameters of the anchor chain-environment coupling model.
7. The method of claim 1, wherein the method further comprises: Monitoring the change of environmental dynamic parameters in real time; And if the environmental dynamic parameter change exceeds a preset threshold value, returning to the execution step, namely predicting a space motion track in the process of the anchor chain sinking from a sea surface launching point to the sea bed through an anchor chain-environment coupling model based on the design parameter and the real-time environmental dynamic parameter, and determining a predicted bottoming point of a corresponding anchor body so as to update and correct the optimal launching point in real time.
8. A pre-anchorage control device for a floating photovoltaic platform, the device comprising: The acquisition unit is used for acquiring design parameters and real-time environmental dynamic parameters of the pre-anchoring operation; The prediction unit is used for predicting a space motion track and a predicted bottoming point of a corresponding anchor body in the process of sinking an anchor chain from a sea surface launching point to a sea bed through an anchor chain-environment coupling model based on the design parameters and the real-time environment dynamic parameters; The calculation unit is used for carrying out reverse simulation calculation by taking the design coordinates as constraint conditions and combining the real-time environment dynamics parameters when the predicted bottoming point deviates from the design coordinates in the design parameters, iteratively correcting the position of the sea surface launching point until the obtained predicted bottoming point meets a preset deviation range, and determining the sea surface launching point as an optimal launching point; And the control unit is used for controlling the anchoring and buoy throwing operation based on the optimal throwing point.
9. An electronic device, characterized in that the electronic device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are in communication with each other through the communication bus; a memory for storing a computer program; a processor for implementing the method of any of claims 1-7 when executing a program stored on a memory.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which, when executed by a processor, implements the method of any of claims 1-7.

Description

Pre-anchoring control method and device for floating photovoltaic platform Technical Field The application relates to the technical field of anchoring construction of an offshore floating structure, in particular to a pre-anchoring control method and device for a floating photovoltaic platform. Background In the construction of an offshore floating photovoltaic platform, the installation of an anchoring system is a key procedure for ensuring the stability and safety of the platform in place. Conventional pre-anchor operation methods typically employ a symmetrical or sequential (e.g., clockwise from 1# to 6 #) anchor arrangement. The operation ship needs to finish the throwing of a single anchor point, the laying and the positioning of an anchor chain in sequence, and the whole process is serial. The traditional method has the main technical problems that under complex sea conditions, the construction ship position drifting, the mutual interference of anchor chains and the lack of integral cooperation easily cause large deviation between the layout and the design path of the finally formed anchor chain system, and the stress of each anchor chain is uneven. The method is characterized in that a later-constructed anchor chain can be pressed on a previously-constructed anchor chain, so that abrasion risk is increased, or the relative positions of anchor points are inaccurate due to ship position change, so that initial tension of each mooring point is unbalanced after a platform is in place, and hidden danger is caused for long-term stable operation of the platform. Meanwhile, the serial operation mode has lower efficiency, prolongs the offshore operation window, and increases the construction cost and risk. Disclosure of Invention The embodiment of the application aims to provide a pre-anchoring control method and device for a floating photovoltaic platform, which are used for determining an optimal throwing point through forward prediction and reverse simulation calculation of an anchor chain-environment coupling model by integrating design parameters and real-time environment dynamic parameters, realizing accurate bottoming of an anchor body and accurate layout of a buoy, and providing a reliable anchoring foundation for subsequent in-place connection of the floating photovoltaic platform. In a first aspect, a pre-anchorage control method for a floating photovoltaic platform is provided, the method may include: Acquiring design parameters and real-time environmental dynamic parameters of pre-anchorage operation; based on the design parameters and the real-time environmental dynamic parameters, predicting a space motion track and a predicted bottoming point of a corresponding anchor body in the process that an anchor chain is settled from a sea surface launching point to a sea bed through an anchor chain-environment coupling model; When deviation exists between the predicted bottoming point and the design coordinates in the design parameters, the design coordinates are used as constraint conditions, reverse simulation calculation is conducted by combining the real-time environment dynamics parameters, the position of the sea surface launching point is corrected in an iterative mode until the obtained predicted bottoming point meets a preset deviation range, and the sea surface launching point is determined to be the optimal launching point; and controlling and executing the throwing operation of the anchoring and the buoy based on the optimal throwing point. In one possible implementation, the design parameters further include design water depth, physical parameters of the anchor chain, and subsea geological data; The real-time environmental dynamic parameters are obtained through real-time monitoring of a sensor system integrated on anchor boat, and include the real-time position and navigational speed of anchor boat, real-time sea surface flow velocity and flow direction data, real-time wave parameters and real-time wind speed and wind direction. In one possible implementation, predicting a spatial motion trajectory and a predicted bottoming point of a corresponding anchor body in a process of sinking an anchor chain from a sea surface launching point to a sea bed includes: The anchor chain is discretized into a plurality of mass points connected by a mass-free rod, and a kinetic equation containing mass, position and speed parameters is established for each mass point; substituting the environmental load born by each particle calculated based on the real-time environmental dynamic parameters into the dynamic equation as an external force term; setting a preset time step by taking the sea surface launching point as the initial position of a top particle of the anchor chain, and iteratively solving a kinetic equation substituted into an environmental load by a numerical integration method to obtain the spatial position change of each particle along with time so as to obtain the spatial motion track of the an