Wave energy resource accounting method, device, medium and product

Abstract

The application discloses a wave energy resource quantity accounting method and device, medium and product, relates to the field of wave energy development, and comprises the following steps: constructing a wave numerical model based on measured wave data and environmental data; performing numerical simulation analysis by using the wave numerical model; calculating the wave energy flow density of each grid node in the accounting sea area according to the effective wave height and the average wave period of each grid node in the accounting sea area; determining the boundary grid unit where the boundary is located and a group of boundary grid nodes around the boundary according to the boundary of the accounting sea area; determining the wave energy flow density actually transmitted into the accounting sea area of the boundary grid nodes according to the wave energy flow density at the boundary grid nodes and the included angle between the wave propagation direction and the normal vector of the midpoint of the corresponding grid boundary line segment pointing to the inside of the accounting sea area; determining the total wave energy power of the accounting sea area according to the wave energy flow density, and accounting for the wave energy resource quantity. The application can improve the accuracy and scientificity of the wave energy resource quantity accounting of the sea area.

Description

Technical Field

[0001] This application relates to the field of wave energy development, and in particular to a method, equipment, medium and product for calculating wave energy resources. Background Technology

[0002] Utilizing wave energy resources in a way that suits local conditions can help solve the power supply problem on remote islands, providing continuous and stable electricity and fresh water for personnel and equipment stationed on the islands, reducing dependence on external energy supplies, and enhancing the energy self-sufficiency of islands and reefs.

[0003] Specifically, accurately calculating wave energy resources (potential) has the following applications: (1) Island microgrid planning: providing baseline data on wave energy resources for islands far from the mainland; rationally allocating wave energy power generation capacity based on residential electricity load and seawater desalination demand; avoiding the problem of "overcapacity and insufficient actual power generation" caused by overestimation of resources. (2) Preliminary feasibility study of marine energy projects: supporting the analysis of "technically exploitable quantity" and "economic feasibility" during the project establishment stage, providing a basis for investment decisions; forming a multi-energy complementary system with wind power and photovoltaics to enhance the energy resilience of islands. (3) Marine spatial planning and policy formulation: supporting relevant departments in delineating "wave energy priority development zones", "restricted development zones" and "prohibited development zones"; providing data support for marine integrated management and renewable energy quotas; avoiding sensitive areas to achieve coordinated and unified resource development and ecological protection. (4) Wave energy device selection and array layout optimization: Based on the spatial distribution of wave energy flux density in the calculation area, guide the device placement location; combine the device conversion efficiency parameters in the technical potential to select the optimal model that matches the local sea conditions; and back-calculate the deployable area through actual potential to optimize the array spacing and total installed capacity. Accurately calculating the amount of wave energy resources is a prerequisite for its rational development and application. Therefore, forming a complete and reliable method for calculating the exploitable amount of wave energy resources is a very important foundational task.

[0004] Currently, the method for calculating the exploitable wave energy resources in a certain sea area is to calculate the wave energy resources by integrating the wave energy flow density at the boundary of the sea area over the length of the boundary. However, this method does not consider the influence of wave propagation direction, so the assessment results of this method are theoretically greater than the actual values, resulting in inaccurate calculations.

[0005] Given the shortcomings of existing technologies, there is an urgent need to provide a new method for calculating wave energy resources in order to improve the accuracy and scientific validity of wave energy resource calculation in marine areas. Summary of the Invention

[0006] The purpose of this application is to provide a method, equipment, medium, and product for calculating wave energy resources, which can improve the accuracy and scientific nature of wave energy resource calculation in marine areas.

[0007] To achieve the above objectives, this application provides the following solution:

[0008] Firstly, this application provides a method for calculating wave energy resources, the method comprising:

[0009] Acquire measured wave data and environmental data for the calculation sea area; the measured wave data includes wave height, wave period, and wave direction data at different stations and time periods within the calculation sea area; the environmental data includes coastline data, sea area boundary data, water depth topography data, and wind field data for the calculation sea area.

[0010] A wave numerical model is constructed based on the measured wave data and environmental data; and numerical simulation analysis is performed using the wave numerical model to obtain the effective wave height and average wave period of each grid node in the calculation area.

[0011] Based on the effective wave height and average wave period of each grid node in the calculation area, the wave energy flux density of each grid node is calculated.

[0012] Based on the calculated sea area boundary, determine the boundary grid cell where the boundary is located, and determine the midpoint of each boundary segment in the boundary grid cell and the grid node closest to the midpoint, thus obtaining a set of boundary grid nodes around the boundary;

[0013] Based on the wave energy flux density at the boundary grid node and the angle between the corresponding wave propagation direction and the normal vector pointing from the midpoint of the corresponding grid boundary line segment into the calculated sea area, the actual wave energy flux density transmitted to the calculated sea area by the boundary grid node is determined; the actual wave energy flux density transmitted to the calculated sea area is the vertical component of the wave energy flux density in the direction pointing into the calculated sea area.

[0014] The total wave energy power of the calculated sea area is determined based on the actual wave energy flow density transmitted from the boundary grid nodes; and the wave energy resource quantity is calculated. The wave energy resource quantity includes: theoretical resource potential, technical resource potential, and actual resource potential. The theoretical resource potential includes: theoretical installed capacity, theoretical annual power generation, theoretical exploitable installed capacity, and theoretical exploitable annual power generation. The technical resource potential includes: technically exploitable installed capacity and technically exploitable annual power generation. The actual resource potential includes: actual exploitable installed capacity and actual exploitable annual power generation.

[0015] Optionally, a wave numerical model is constructed based on the measured wave data and environmental data, specifically including:

[0016] Based on the coastline data, sea boundary data, water depth topography data, and wind field data of the accounting sea area, a wave numerical model is constructed.

[0017] The wave numerical model is calibrated based on measured wave data.

[0018] Optionally, determining the total wave energy power of the calculated sea area based on the actual wave energy flux density transmitted from the boundary grid nodes specifically includes:

[0019] Using formula Determine the average annual total power of wave energy resources ;

[0020] in, N To calculate the span of years, For the calculation of the sea area i Total annual wave energy resources power , m To calculate the total number of boundary grid nodes in the sea area, For the calculation of the sea area s The cosine of the angle between the wave propagation direction at each boundary grid node and the normal vector pointing from the midpoint of the corresponding grid boundary line segment into the calculated sea area. , No. s Wave propagation direction at each boundary grid node For the first s Each boundary grid node corresponds to the normal vector of the midpoint of the grid boundary line segment, with its direction pointing towards the interior of the calculated sea area. For the calculation of the sea area s Wave energy flux density at each boundary grid node, without considering wave propagation direction. , The density of seawater, It is the acceleration due to gravity. For the first n The group velocity of each wave component, Wave energy spectral density at frequency energy spectrum value is the outline length of the grid boundary line segment corresponding to the s-th boundary grid node.

[0021] Optionally, the calculation of wave energy resources also includes, prior to:

[0022] The calculation sea area is screened based on the actual wave energy flux density of the calculation sea area to obtain the theoretically exploitable calculation sea area; the theoretically exploitable calculation sea area is the sea area where the actual wave energy flux density of the calculation sea area is greater than or equal to a set threshold.

[0023] Based on the actual distribution pattern of wave energy flux density in the calculated sea area, different wave energy flux density levels are divided, and representative values ​​for each wave energy flux density level are determined.

[0024] Based on geographical and marine environmental constraints, as well as ecological and conservation limitations, theoretically exploitable sea areas are screened to obtain actual exploitable sea areas.

[0025] Optionally, the process for determining the theoretical resource potential is as follows:

[0026] Using formula Determine the theoretical installed capacity ;

[0027] Using formula Determine the theoretical annual power generation E thro ;

[0028] Based on the theoretical installed capacity and theoretical annual power generation of the theoretically exploitable sea area, the corresponding theoretically exploitable installed capacity is determined. and theoretically exploitable annual power generation ;

[0029] in, CF Wave energy capacity coefficient, H It represents the number of hours in a year.

[0030] Optionally, the process for determining the potential of the technological resources is as follows:

[0031] Using formula Determine the technically exploitable installed capacity ;

[0032] Using formula Determine the technically exploitable annual power generation ;

[0033] in, To calculate the wave energy flux density at the boundary of the theoretically exploitable sea area, Theoretically, this allows for the calculation of wave energy flux density in a specific sea area after the incident wave passes through a wave energy device array. or The technology exploitability factor is used to characterize the overall energy conversion efficiency of wave energy devices from wave energy to electrical energy. Different types of wave energy devices... or Different values

[0034] Optionally, the process for determining the actual resource potential is as follows:

[0035] Using formula Determine the actual exploitable installed capacity P prac ;

[0036] Using formula Determine the actual exploitable annual power generation ;

[0037] in, βThe exploitability coefficient of the actual exploitable sea area is used for calculation. , j Wave energy flux density level, k The number of wave energy flux density levels. For the actual exploitable sea area accounting for the first j The wave energy flux density at each level represents a value. For the actual exploitable sea area accounting for the first j Area at each level, For the theoretically exploitable accounting sea area, the first j Wave energy flux density at various levels, For the theoretically exploitable accounting sea area, the first j Area of ​​each level.

[0038] Secondly, this application provides a wave energy resource calculation device, the wave energy resource calculation device comprising:

[0039] The wave data acquisition module is used to acquire measured wave data and environmental data of the calculation sea area. The measured wave data includes wave height, wave period, and wave direction data at different stations and time periods within the calculation sea area. The environmental data includes coastline data, sea area boundary data, water depth topography data, and wind field data of the calculation sea area.

[0040] The wave numerical model construction module is used to construct a wave numerical model based on the measured wave data and environmental data; and to use the wave numerical model to perform numerical simulation analysis to obtain the effective wave height and average wave period of each grid node in the calculation area.

[0041] The wave energy flux density calculation module is used to calculate the wave energy flux density of each grid node based on the effective wave height and average wave period of each grid node in the calculation area.

[0042] The boundary grid node determination module is used to determine the boundary grid cell where the boundary is located based on the boundary of the calculated sea area, and to determine the midpoint of each boundary segment in the boundary grid cell and the grid node closest to the midpoint, thus obtaining a set of boundary grid nodes around the boundary;

[0043] The actual wave energy flux density calculation module is used to determine the actual wave energy flux density of the boundary grid nodes in the calculated sea area based on the wave energy flux density at the boundary grid nodes and the angle between the corresponding wave propagation direction and the normal vector pointing from the midpoint of the corresponding grid boundary line segment into the calculated sea area; the actual wave energy flux density in the calculated sea area is the vertical component of the wave energy flux density in the direction pointing into the calculated sea area.

[0044] The wave energy resource calculation module is used to determine the total wave energy power of the calculated sea area based on the actual wave energy flow density transmitted from the boundary grid nodes; and to calculate the wave energy resource quantity. The wave energy resource quantity includes: theoretical resource potential, technical resource potential, and actual resource potential. The theoretical resource potential includes: theoretical installed capacity, theoretical annual power generation, theoretical exploitable installed capacity, and theoretical exploitable annual power generation. The technical resource potential includes: technically exploitable installed capacity and technically exploitable annual power generation. The actual resource potential includes: actual exploitable installed capacity and actual exploitable annual power generation.

[0045] Thirdly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the wave energy resource calculation method described above.

[0046] Fourthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the wave energy resource calculation method described above.

[0047] According to the specific embodiments provided in this application, this application has the following technical effects:

[0048] This application provides a method, device, medium, and product for calculating wave energy resources. Based on measured wave data and environmental data, a wave numerical model is constructed, using these data as the foundation to build a high-fidelity wave numerical model that effectively reflects real ocean dynamic processes. The effective wave height and average wave period of each grid node within the calculation area are determined. Based on the wave energy flux density at the boundary grid nodes and the angle between the wave propagation direction and the normal vector pointing from the midpoint of the corresponding grid boundary line segment into the calculation area, the actual wave energy flux density transmitted to the calculation area from the boundary grid nodes is determined. This allows for the correction of the wave energy flux density, retaining only the effective component pointing inwards. The influence of wave propagation direction is considered to avoid misjudgment of energy at the boundaries, resulting in a more accurate assessment of physical reality. This application improves the accuracy and scientific rigor of wave energy resource calculation in marine areas. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is a schematic diagram of a wave energy resource calculation method in one embodiment of this application. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] In one exemplary embodiment, such as Figure 1 As shown, a method for calculating wave energy resources is provided, which includes the following steps S101 to S106. Wherein:

[0054] S101, acquire measured wave data and environmental data of the calculation sea area; the measured wave data includes: wave height, wave period and wave direction data of different stations and different time periods in the calculation sea area; the environmental data includes: coastline data, sea area boundary data, water depth topography data and wind field data (east and north components of wind speed, wind direction) of the calculation sea area.

[0055] S102, construct a wave numerical model based on the measured wave data and environmental data; and perform numerical simulation analysis based on the wave numerical model to obtain the effective wave height and average wave period of each grid node in the calculation area.

[0056] S102 specifically includes:

[0057] S1. Construct a wave numerical model based on the coastline data, sea boundary data, water depth topography data, and wind field data of the accounting sea area;

[0058] Specifically, based on the coastline and water depth topographic data of the calculation area, a computational domain grid is constructed using SMS software. In waters with large changes in water depth gradient and complex coastlines, the grid is densified, and the water depth data is interpolated onto the computational grid nodes to form the bottom boundary conditions of the numerical model. Based on the wind field data, driving conditions are applied to the wave numerical model. Based on the sea area boundary data, wave spectrum data or wave parameters are applied to the open boundary of the numerical model to form the boundary conditions of the numerical model.

[0059] S2. Perform numerical simulations using a suitable time step that matches the target accuracy requirements and computing power. Numerical simulation software includes, but is not limited to, SWAN, MIKE21, and TELEMAC, to obtain numerical simulation results.

[0060] S3. Based on the numerical simulation results and measured wave data, the wave numerical model is calibrated to ensure that the numerical simulation results conform to the wave characteristics of the calculation sea area and to determine the final wave numerical model used for wave energy resource calculation in the target sea area.

[0061] Specifically, numerical simulations are performed based on wave numerical models to analyze the spatiotemporal distribution characteristics of waves, obtaining effective wave height data and average period data for each grid node within the calculation area. Based on this, the wave energy flux density for each grid node is calculated. Unit: W / m, calculation formula is as follows:

[0062] ;

[0063] in, Seawater density, unit: kg / m³ 3 , Acceleration due to gravity, unit: m / s² 2 , For group speed, the first Group velocity of each wave component, in m / s. For wave energy spectral density, at frequency Energy spectrum value, unit: m 2 / Hz.

[0064] Wave energy flux density can also be calculated using the following formula. ,as follows:

[0065] ;

[0066] in, Significant wave height, unit: m; The average wave period is expressed in seconds (s).

[0067] S103, based on the effective wave height, average wave period, and wave energy flux density of each grid node within the calculated sea area. The calculation formula is used to determine the wave energy flux density at each grid node.

[0068] S104. Based on the boundary of the calculated sea area, determine the boundary grid cell where the boundary is located, and determine the midpoint of each boundary segment in the boundary grid cell and the grid node closest to the midpoint, to obtain a set of boundary grid nodes around the boundary.

[0069] S105, based on the wave energy flux density at the boundary grid node and the angle between the wave propagation direction and the normal vector pointing from the midpoint of the corresponding grid boundary line segment into the calculated sea area, determine the actual wave energy flux density transmitted to the calculated sea area by the boundary grid node; the actual wave energy flux density transmitted to the calculated sea area is the vertical component of the wave energy flux density in the direction pointing into the calculated sea area.

[0070] S106, Determine the total wave energy power of the calculated sea area based on the actual wave energy flow density transmitted from the boundary grid nodes; and calculate the wave energy resource quantity.

[0071] S106 specifically includes:

[0072] Using formula Determine the average annual total wave energy power The unit is kilowatt (kW).

[0073] in, N To calculate the span of years, it should be no less than 10 years; To calculate the total wave energy resources of the sea area in year i, the actual amount of wave energy resources transmitted from the outside to the sea area after the wave direction is considered, and the unit is kilowatt (kW). The boundary grid nodes of the accounting sea area total [number missing] m indivual. For the calculation of the sea area s The cosine of the angle between the wave propagation direction at each boundary grid node and the normal vector pointing from the midpoint of the corresponding grid boundary line segment into the calculated sea area. , For the first s Wave propagation direction at each boundary grid node, in degrees (°), with true north as 0°, measured clockwise. For the first s Each boundary grid node corresponds to the normal vector of the midpoint of the grid boundary line segment, pointing inwards towards the interior of the calculated sea area, in degrees (°), with true north as 0°, and measured clockwise. For the calculation of the sea area s Wave energy flux density at each boundary grid node, without considering wave propagation direction, in kilowatts (kW). , The density of seawater, It is the acceleration due to gravity. For the first n The group velocity of each wave component, Wave energy spectral density at frequency The energy spectrum value, The length of the sea area boundary contour is calculated for the kernel of the s-th grid cell, in meters (m).

[0074] S106. The wave energy resource quantity is calculated based on the average annual total wave energy power of the calculated sea area. The wave energy resource quantity includes: theoretical resource potential, technical resource potential, and actual resource potential. Among them, the theoretical resource potential is used to ascertain the wave energy resource base of a certain sea area and clarify the overall distribution characteristics of wave energy resources in that sea area; the technical resource potential is used to assess the maximum exploitable amount of wave energy resources in a certain sea area under the current technical conditions; and the actual resource potential is used to provide theoretical basis and data support for the development and implementation of wave energy resource projects in a certain sea area.

[0075] The theoretical resource potential includes: theoretical installed capacity, theoretical annual power generation, theoretical exploitable installed capacity, and theoretical exploitable annual power generation; the technical resource potential includes: technically exploitable installed capacity and technically exploitable annual power generation; the actual resource potential includes: actual exploitable installed capacity and actual exploitable annual power generation. Table 1 shows the eight accounting indicators for the three accounting items: theoretical resource potential, technical resource potential, and actual resource potential.

[0076] Table 1

[0077]

[0078] S106 also includes:

[0079] The calculation sea areas are screened based on the actual wave energy flux density received from the calculation sea areas to obtain theoretically exploitable calculation sea areas. Theoretically exploitable calculation sea areas are those where the actual wave energy flux density received from the calculation sea areas is greater than or equal to a set threshold. The set threshold is 2 kW / m.

[0080] After determining the theoretically exploitable calculation sea area, the corresponding sea area area and perimeter are obtained, data is collected, wave energy resources are assessed, and the wave energy flux density and wave direction of each grid node in the calculation sea area are obtained. Then, the wave direction at the boundary grid node of the calculation sea area is extracted, which is the direction of wave energy resource propagation at that location. The amount of wave energy resource perpendicular to the grid boundary line segment corresponding to the boundary grid node and pointing towards the calculation area is calculated (the actual input amount of wave energy flux density).

[0081] The process for determining the theoretical resource potential is as follows:

[0082] Using formula Determine the theoretical installed capacity The unit is kilowatt (kW).

[0083] Using formula Determine the theoretical annual power generation E thro The unit is kilowatt-hour (kW·h);

[0084] Based on the theoretical installed capacity and theoretical annual power generation of the theoretically exploitable sea area, the corresponding theoretically exploitable installed capacity is determined. and theoretically exploitable annual power generation ;

[0085] in, CF Wave energy capacity coefficient, H It represents the number of hours in a year. For non-leap years, it is calculated as 8760, and for leap years, it is calculated as 8784. The unit is hours (h).

[0086] The process for determining the potential of the aforementioned technological resources is as follows:

[0087] Using formula Determine the technically exploitable installed capacity The unit is kilowatt (kW).

[0088] Using formula Determine the technically exploitable annual power generation The unit is kilowatt-hour (kW·h);

[0089] in, Wave energy flux density at the boundary of the theoretically exploitable sea area is expressed in kilowatts per meter (kW / m). Theoretically, this allows for the calculation of wave energy flux density in a sea area after the incident wave passes through a wave energy device array. or The technology exploitability coefficient represents the overall energy conversion efficiency of a wave energy device from wave energy to electrical energy, and different types of wave energy devices are also mentioned. or The values ​​are different, in addition, or The value is also related to the technological maturity of wave energy devices.

[0090] The process for determining the actual exploitable sea area is as follows:

[0091] Based on geographical and marine environmental constraints, ecological and conservation limitations, and socio-economic factors, theoretically exploitable sea areas are selected to obtain actual exploitable sea areas.

[0092] The process for determining the actual resource potential is as follows:

[0093] Using formula Determine the actual exploitable installed capacity P prac The unit is kilowatt (kW).

[0094] Using formula Determine the actual exploitable annual power generation The unit is kilowatt-hour (kW·h);

[0095] in, βThis represents the exploitability coefficient of the actual exploitable sea area. , j Wave energy flux density level, k The number of wave energy flux density levels. For the actual exploitable sea area accounting for the first j The wave energy flux density is represented by the value of each level, in kilowatts per meter (kW / m). For the actual exploitable sea area accounting for the first j Areas at each level, in square meters (m²) 2 ), For the theoretically exploitable accounting sea area, the first j Wave energy flux density at various levels, expressed in kilowatts per meter (kW / m). For the theoretically exploitable accounting sea area, the first j Areas at different levels, in square meters (m²) 2 ).

[0096] This application is able to base itself on the wave energy resource endowment conditions (wave height, period, wave energy flux density, etc., with wave energy flux density as the main consideration) of a certain sea area, while taking into account the current status of wave energy device development and research and its performance technical parameters, as well as the avoidance area range data of wave energy resource development constrained by sea area spatial planning, and divide the accounting indicators according to actual resource assessment needs to form a comprehensive resource accounting indicator system.

[0097] Based on the same inventive concept, this application also provides a wave energy resource calculation device for implementing the wave energy resource calculation method described above. The solution provided by this device is similar to the implementation scheme described in the above method; therefore, the specific limitations of one or more wave energy resource calculation device embodiments provided below can be found in the limitations of the wave energy resource calculation method described above, and will not be repeated here.

[0098] In one exemplary embodiment, a wave energy resource calculation device is provided, comprising:

[0099] The wave data acquisition module is used to acquire measured wave data of the calculation sea area; the wave data includes wave height, wave period and wave direction data at different stations and at different time periods within the calculation sea area;

[0100] The wave numerical model construction module is used to construct a wave numerical model based on the measured wave data and environmental data.

[0101] The wave energy flux density calculation module is used to determine the effective wave height, average wave period, and wave energy flux density of each grid node in the calculation area based on the wave numerical model.

[0102] The actual wave energy flux density calculation module is used to determine the actual wave energy flux density of the boundary grid nodes in the calculated sea area based on the wave energy flux density at the boundary grid nodes of the calculated sea area and the angle between the wave propagation direction and the normal vector pointing from the midpoint of the corresponding grid boundary line segment into the calculated sea area; the actual wave energy flux density of the calculated sea area is the vertical component of the wave energy flux density in the direction pointing into the calculated sea area.

[0103] The annual average total wave energy power calculation module is used to determine the annual average total wave energy power based on the actual wave energy flux density of the calculated sea area from the boundary grid nodes of the calculated sea area.

[0104] The wave energy resource calculation module is used to calculate the wave energy resource quantity based on the average annual total wave energy power of the calculated sea area. The wave energy resource quantity includes: theoretical resource potential, technical resource potential, and actual resource potential. The theoretical resource potential includes: theoretical installed capacity, theoretical annual power generation, theoretical exploitable installed capacity, and theoretical exploitable annual power generation. The technical resource potential includes: technically exploitable installed capacity and technically exploitable annual power generation. The actual resource potential includes: actual exploitable installed capacity and actual exploitable annual power generation.

[0105] In one exemplary embodiment, a computer device is provided, which may be a server or a terminal. The computer device includes a processor, memory, input / output interfaces (I / O), and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is connected to the system bus via the I / O interfaces. The processor of the computer device provides computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The I / O interfaces of the computer device are used for exchanging information between the processor and external devices. The communication interface of the computer device is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a wave energy resource calculation method.

[0106] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0107] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0108] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0109] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0110] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0111] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0112] In this application, all actions to acquire signals, information, or data are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with the authorization granted by the owner of the relevant device.

[0113] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0114] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for accounting wave energy resource quantities, characterized by, The wave energy resource quantity accounting method comprises the following steps: Obtaining measured wave data and environmental data of the accounting sea area; the measured wave data comprises wave height, wave period and wave direction data of different stations and different time periods in the accounting sea area; the environmental data comprises coastline data, sea area boundary data, water depth topography data and wind field data of the accounting sea area; Constructing a wave numerical model based on the measured wave data and the environmental data; and performing numerical simulation analysis by using the wave numerical model to obtain effective wave height and average wave period of each grid node in the accounting sea area; According to the effective wave height and the average wave period of each grid node in the accounting sea area, the wave energy flow density of each grid node is calculated; According to the boundary of the accounting sea area, the boundary grid unit where the boundary is located is determined, and the midpoint of each boundary segment and the grid node closest to the midpoint are determined to obtain a group of boundary grid nodes around the boundary; According to the wave energy flow density at the boundary grid node and the included angle between the corresponding wave propagation direction and the normal vector of the corresponding grid boundary segment midpoint pointing to the inside of the accounting sea area, the wave energy flow density actually transmitted into the accounting sea area by the boundary grid node is determined; the wave energy flow density actually transmitted into the accounting sea area is the vertical component in the direction of the wave energy flow density pointing to the inside of the accounting sea area; According to the wave energy flow density actually transmitted into the accounting sea area by the boundary grid node, the total wave energy power of the accounting sea area is determined; and the wave energy resource quantity is accounted; the wave energy resource quantity comprises theoretical resource potential, technical resource potential and actual resource potential; the theoretical resource potential comprises theoretical installed capacity, theoretical annual power generation, theoretical developable installed capacity and theoretical developable annual power generation; the technical resource potential comprises technical developable installed capacity and technical developable annual power generation; the actual resource potential comprises actual developable installed capacity and actual developable annual power generation; The wave energy flow density actually transmitted into the accounting sea area by the boundary grid node is determined according to the wave energy flow density actually transmitted into the accounting sea area by the boundary grid node, and the total wave energy power of the accounting sea area is determined; and the wave energy resource quantity is accounted; the wave energy resource quantity comprises theoretical resource potential, technical resource potential and actual resource potential; the theoretical resource potential comprises theoretical installed capacity, theoretical annual power generation, theoretical developable installed capacity and theoretical developable annual power generation; the technical resource potential comprises technical developable installed capacity and technical developable annual power generation; the actual resource potential comprises actual developable installed capacity and actual developable annual power generation; Using the formula Determine the average annual wave energy resource total power ; where N is the span of the accounting year, is the total wave energy resource power of the accounting sea area in the i-th year, , m is the total number of boundary grid nodes of the accounting sea area, is the cosine value of the angle between the wave propagation direction at the s-th boundary grid node of the accounting sea area and the normal vector of the midpoint of the corresponding grid boundary line segment pointing to the inside of the accounting sea area, , is the wave propagation direction at the s-th boundary grid node, is the normal vector of the midpoint of the corresponding grid boundary line segment of the s-th boundary grid node, pointing to the inside of the accounting sea area, is the wave energy flow density at the s-th boundary grid node of the accounting sea area without considering the wave propagation direction, , is the density of seawater, is the acceleration of gravity, is the group velocity of the n-th wave component, is the energy spectrum value of the wave energy spectrum density at frequency , is the contour length of the corresponding grid boundary line segment of the s-th boundary grid node.

2. The wave energy resource assessment method of claim 1, wherein, The wave numerical model is constructed based on the measured wave data and the environmental data, and the model is calibrated based on the measured wave data. The wave numerical model is constructed based on the measured wave data and the environmental data, and the model is calibrated based on the measured wave data. The wave numerical model is constructed based on the coastline data, the sea area boundary data, the water depth topography data and the wind field data of the accounting sea area.

3. The wave energy resource assessment method of claim 1, wherein, The wave numerical model is constructed based on the measured wave data and the environmental data, and the model is calibrated based on the measured wave data. The theoretical resource potential is determined according to the actual developable installed capacity and the actual developable annual power generation of the accounting sea area. The technical resource potential is determined according to the actual developable installed capacity and the actual developable annual power generation of the accounting sea area. The actual resource potential is determined according to the actual developable installed capacity and the actual developable annual power generation of the accounting sea area.

4. The wave energy resource assessment method according to claim 3, characterized in that, ​ Using the formula determining theoretical installed capacity ; Using the formula determining the theoretical annual energy production E thro ; According to the theory, the theoretical developable installed capacity and the theoretical annual power generation of the sea area can be developed, and the theoretical developable installed capacity and the theoretical annual power generation are determined correspondingly ; ​ 5. The wave energy resource assessment method according to claim 4, characterized in that, ​ Using the formula determination techniques can develop installed capacity ; Using the formula determined technology can develop annual energy production ; wherein, is the wave energy flux density at the boundary of the theoretical developable accounting sea area, is the wave energy flux density of the outgoing wave after passing through the wave energy device array, and η is the technical developable coefficient, which is used to represent the overall energy conversion efficiency of the wave energy device from wave energy to electric energy, and the η value of different wave energy device types is different.

6. The wave energy resource assessment method according to claim 5, characterized in that, ​ Using the formula determining the actual developable installed capacity ; Using the formula determining the actual developable annual energy production ; wherein β is the actual exploitable coefficient of the accounting sea area, j is the wave energy flow density level, and k is the number of wave energy flow density levels, is the representative value of the wave energy flow density of the jth level in the actual exploitable accounting sea area, is the area of the jth level in the actual exploitable accounting sea area, is the wave energy flow density of the jth level in the theoretical exploitable accounting sea area, is the area of the jth level in the theoretical exploitable accounting sea area.

7. A wave energy resource assessment method device for implementing the wave energy resource assessment method of any one of claims 1-6, characterized by, The wave energy resource quantity accounting device comprises: a wave data acquisition module, configured to acquire measured wave data and environmental data of an accounting sea area; the measured wave data comprises wave height, wave period and wave direction data of different stations and different time periods in the accounting sea area; and the environmental data comprises coastline data, sea area boundary data, water depth topography data and wind field data of the accounting sea area; a wave numerical model construction module, configured to construct a wave numerical model based on the measured wave data and the environmental data, and to perform numerical simulation analysis by using the wave numerical model to obtain effective wave height and average wave period of each grid node in the accounting sea area; a wave energy flux density accounting module, configured to calculate wave energy flux density of each grid node according to the effective wave height and the average wave period of each grid node in the accounting sea area; a boundary grid node determination module, configured to determine a boundary grid unit where a boundary of the accounting sea area is located, and determine a midpoint of each boundary segment of the boundary grid unit and a grid node closest to the midpoint, to obtain a group of boundary grid nodes around the boundary; an actual wave energy flux density accounting module, configured to determine actual wave energy flux density of the boundary grid nodes transmitted into the accounting sea area according to the wave energy flux density of the boundary grid nodes and an included angle between a corresponding wave propagation direction and a normal vector of a midpoint of a corresponding grid boundary segment pointing to the inside of the accounting sea area; the actual wave energy flux density transmitted into the accounting sea area is a vertical component in a direction of the wave energy flux density pointing to the inside of the accounting sea area; a wave energy resource quantity accounting module, configured to determine total wave energy power of the accounting sea area according to the actual wave energy flux density of the boundary grid nodes transmitted into the accounting sea area, and to account for wave energy resource quantity; the wave energy resource quantity comprises theoretical resource potential, technical resource potential and actual resource potential; the theoretical resource potential comprises theoretical installed capacity, theoretical annual power generation, theoretical developable installed capacity and theoretical developable annual power generation; the technical resource potential comprises technical developable installed capacity and technical developable annual power generation; and the actual resource potential comprises actual developable installed capacity and actual developable annual power generation.

8. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by a processor to implement the wave energy resource quantity accounting method in any one of claims 1-6.

9. A computer program product comprising a computer program, characterized in that, The computer program is executed by a processor to implement the wave energy resource quantity accounting method in any one of claims 1-6.

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