Wave energy resource quantity accounting method, equipment, medium and product

Abstract

The invention discloses a wave energy resource quantity accounting method and device, a medium and a product, and relates to the field of wave energy development, and the method comprises the steps: building a wave numerical model based on actually measured wave data and environment data; carrying out numerical simulation analysis by utilizing a wave numerical model; according to the effective wave height and the average wave period of each grid node in the accounting sea area, calculating the wave energy flow density of each grid node; according to the accounting sea area boundary, determining a boundary grid unit where the boundary is located and a group of boundary grid nodes surrounding the boundary; according to the wave energy flow density at the boundary grid node and the included angle between the wave propagation direction and the normal vector pointing to the interior of the accounting sea area from the midpoint of the corresponding grid boundary line segment, 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, the total sea area wave energy power is determined and calculated, and the wave energy resource quantity is calculated; according to the invention, the accuracy and scientificity of sea area wave energy resource quantity accounting can be improved.

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 object, the application provides the following scheme. In a first aspect, the application provides a wave energy resource quantity accounting method, which comprises the following steps: obtaining 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; 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; calculating 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; determining a boundary grid unit where the boundary is located according to the boundary of the accounting sea area, and determining a midpoint of each boundary segment and a grid node closest to the midpoint to obtain a group of boundary grid nodes around the boundary; determining wave energy flux density actually transmitted into the accounting sea area from the boundary grid nodes according to an included angle between the wave energy flux density at the boundary grid nodes and a normal vector of a corresponding grid boundary segment midpoint pointing to the inside of the accounting sea area; the wave energy flux density actually 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; determining total wave energy power of the accounting sea area according to the wave energy flux density actually transmitted into the accounting sea area from the boundary grid nodes, and accounting 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.

[0008] Optionally, the wave numerical model is constructed based on the measured wave data and the environmental data, and specifically comprises the following steps: constructing the wave numerical model according to the coastline data, the sea area boundary data, the water depth topography data and the wind field data of the accounting sea area; performing model calibration on the wave numerical model based on the measured wave data.

[0009] Optionally, the determination of the total wave energy power of the accounting sea area according to the wave energy flux density actually transmitted into the accounting sea area from the boundary grid nodes specifically comprises the following steps: utilizing a formula determining annual average total wave energy resource power ; 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.

[0010] Optionally, the calculation of wave energy resources also includes, prior to: 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. 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. 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.

[0011] Optionally, the process for determining the theoretical resource potential is as follows: Using formula Determine the theoretical installed capacity ; Using formula Determine the theoretical annual power generation E thro ; 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 ; in, CF Wave energy capacity coefficient, H It represents the number of hours in a year.

[0012] Optionally, the process for determining the potential of the technological resources is as follows: Using formula Determine the technically exploitable installed capacity ; Using formula Determine the technically exploitable annual power generation ; 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. η 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... η Different values

[0013] Optionally, the process for determining the actual resource potential is as follows: Using formula Determine the actual exploitable installed capacity P prac ; Using formula Determine the actual exploitable annual power generation ; in, β The 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 of ​​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 at each level.

[0014] In a second aspect, the application provides a wave energy resource quantity accounting device, which 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 to determine a midpoint of each boundary segment in 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 in which the wave energy flux density points 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.

[0015] In a third aspect, the application provides a computer readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the wave energy resource quantity accounting method.

[0016] In a fourth aspect, the application provides a computer program product comprising a computer program, the computer program being executed by a processor to implement the wave energy resource quantity accounting method.

[0017] According to the embodiments provided in the application, the following technical effects are achieved. The application provides a wave energy resource quantity accounting method, device, medium and product. A wave numerical model is constructed based on the measured wave data and environmental data, that is, a high-fidelity wave numerical model is constructed based on the measured wave data and environmental data, and the real marine dynamic process is effectively reflected. The effective wave height and average wave period of each grid node in the accounting sea area are determined. According to the angle between the wave energy flow density at the boundary grid node and the wave propagation direction and the normal vector of the midpoint of the corresponding grid boundary line segment in the accounting sea area, the wave energy flow density actually transmitted into the accounting sea area by the boundary grid node is determined, and the wave energy flow density is corrected to only retain the effective component pointing to the inside of the sea area. The influence of the wave propagation direction is considered to avoid energy misjudgment at the boundary and to be more consistent with the physical reality. The application can improve the accuracy and scientificity of wave energy resource quantity accounting of the sea area. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is an embodiment of the present application to provide a wave energy resource quantity accounting method flowchart. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail in combination with the drawings and specific embodiments.

[0022] In an exemplary embodiment, as shown in Figure 1 A wave energy resource quantity accounting method is provided, which comprises the following S101 to S106. Wherein: S101, obtaining 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; the environmental data comprises coastline data, sea area boundary data, water depth topography data and wind field data (east component and north component of wind speed, wind direction) of the accounting sea area; 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. S102 specifically includes: S1. Construct a wave numerical model based on the coastline data, sea boundary data, water depth topography data, and wind field data of the calculated sea area. 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. 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. 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.

[0023] 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: ; 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.

[0024] Wave energy flux density can also be calculated using the following formula. ,as follows: ; in, Significant wave height, unit: m; The average wave period is expressed in seconds (s).

[0025] 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. 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. 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. 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. S106 specifically includes: Using formula Determine the average annual total wave energy power The unit is kilowatt (kW). 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).

[0026] 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. 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.

[0027] Table 1

[0028] S106 also includes: 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. 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). The process for determining the theoretical resource potential is as follows: Using formula Determine the theoretical installed capacity The unit is kilowatt (kW). Using formula Determine the theoretical annual power generation E thro The unit is kilowatt-hour (kW·h); 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 ; 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).

[0029] The process for determining the potential of the aforementioned technological resources is as follows: Using formula Determine the technically exploitable installed capacity The unit is kilowatt (kW). Using formula Determine the technically exploitable annual power generation The unit is kilowatt-hour (kW·h); 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. η 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. η The values ​​are different, in addition, η The value is also related to the technological maturity of wave energy devices.

[0030] The process for determining the actual exploitable sea area is as follows: 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.

[0031] The process for determining the actual resource potential is as follows: Using formula Determine the actual exploitable installed capacity P prac The unit is kilowatt (kW). Using formula Determine the actual exploitable annual power generation The unit is kilowatt-hour (kW·h); in, β This 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 firstj 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 different levels, 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 ).

[0032] 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.

[0033] 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.

[0034] In one exemplary embodiment, a wave energy resource calculation device is provided, comprising: The wave data acquisition module is used to acquire measured wave data of the calculated sea area; the wave data includes wave height, wave period and wave direction data at different stations and at different time periods within the calculated sea area; The wave numerical model construction module is used to construct a wave numerical model based on the measured wave data and environmental data. 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. 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. The annual average total wave energy power calculation module is configured to determine the annual average total wave energy power according to the actual incoming wave energy flow density of the boundary grid nodes of the calculation sea area. The wave energy resource amount calculation module is configured to calculate the wave energy resource amount according to the annual average total wave energy power of the calculation sea area. The wave energy resource amount includes theoretical resource potential, technical resource potential and actual resource potential. The theoretical resource potential includes theoretical installed capacity, theoretical annual power generation, theoretical developable installed capacity and theoretical developable annual power generation. The technical resource potential includes technical developable installed capacity and technical developable annual power generation. The actual resource potential includes actual developable installed capacity and actual developable annual power generation.

[0035] In an example embodiment, a computer device, which can be a server or a terminal, is provided. The computer device includes a processor, a memory, an input / output interface (I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for running the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is configured to exchange information between the processor and external devices. The communication interface of the computer device is configured to communicate with external terminals through a network connection. The computer program is executed by the processor to implement a wave energy resource amount calculation method.

[0036] In an example embodiment, a computer device is provided, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.

[0037] In an example embodiment, a computer readable storage medium is provided, which stores a computer program. The computer program is executed by a processor to implement the steps in the above method embodiments.

[0038] In an example embodiment, a computer program product is provided, which includes a computer program. The computer program is executed by a processor to implement the steps in the above method embodiments.

[0039] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant regulations.

[0040] It can be understood by those skilled in the art that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing related hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiments of each method. Any reference to memory, database or other medium used in the embodiments provided by the present 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 storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0041] The database involved in the embodiments provided by the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on blockchain, etc., without being limited thereto. The processor involved in the embodiments provided by the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0042] In the present application, all actions of obtaining signals, information or data are performed under the premise of complying with the corresponding data protection regulations and policies of the country where the device is located, and under the premise of obtaining authorization from the owner of the corresponding device.

[0043] Any technical features in the above embodiments can be combined, and for the sake of brevity, not all possible combinations are described above, however, it should be understood that the application encompasses all possible combinations of the technical features unless such a combination is not technically possible.

[0044] The principles and implementation manners of the present application are described herein by using specific examples, and the above embodiments are only used to help understand the method of the present application and its core idea; meanwhile, according to the idea of the present application, the specific implementation manners and application scopes will be changed by those skilled in the art. In conclusion, the content of the present specification should not be understood as a limitation of the present application.

Claims

1. A method for accounting wave energy resource quantities, characterized by, The wave energy resource quantity accounting method comprises: 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.

2. The wave energy resource assessment method of claim 1, wherein, Based on the measured wave data and the environmental data, a wave numerical model is constructed, specifically comprising: According to the coastline data, the sea area boundary data, the water depth topography data and the wind field data of the accounting sea area, a wave numerical model is constructed; Based on the measured wave data, the wave numerical model is calibrated.

3. The wave energy resource assessment method of claim 1, wherein, 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, specifically comprising: Using the formula determining the total power of the annual average wave energy resource ; 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. , For the first 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 The energy spectrum value, is the outline length of the grid boundary line segment corresponding to the s-th boundary grid node.

4. The wave energy resource assessment method according to claim 3, characterized in that, And the wave energy resource quantity is accounted, which further comprises: According to the distribution rule of the wave energy flow density actually transmitted into the accounting sea area, different wave energy flow density grades are divided to determine the representative value of each wave energy flow density grade; According to geographical and marine environmental constraints and ecological and protection restrictions, the theoretically developable accounting sea area is screened to obtain an actually developable accounting sea area. The determination process of the theoretical resource potential is:

5. The wave energy resource assessment method according to claim 4, characterized in that, CF Using the formula determining the theoretical installed capacity ; Using the formula determine the theoretical annual energy production E thro ; 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 ; wherein, The determination process of the technical resource potential is: is the wave energy capacity coefficient, H is the number of hours in a year.

6. The wave energy resource assessment method according to claim 5, characterized in that, η Using the formula The determination technique can develop installed capacity ; Using the formula determination techniques can develop annual energy production ; wherein, is the wave energy flux density at the boundary of the theoretically developable accounting sea area, is the wave energy flux density at the exit of the theoretically developable accounting sea area after the incident wave has passed through the array of wave energy devices, η is the technical developability coefficient, which is used to represent the overall energy conversion efficiency of the wave energy device from wave energy to electrical energy, and the The determination process of the actual resource potential is: value of the technical developability coefficient is different for different types of wave energy devices.

7. The wave energy resource assessment method according to claim 6, characterized in that, The wave energy resource quantity accounting device comprises: Using the formula determining the actual developable installed capacity P prac ; Using the formula determining the actual developable annual energy production ; wherein, β is the exploitable coefficient of the actual exploitable accounting sea area, , j is the wave energy flow density level, k is the number of wave energy flow density levels, is the representative value of the wave energy flow density of the j th level in the actual exploitable accounting sea area, is the area of the j th level in the actual exploitable accounting sea area, is the wave energy flow density of the j th level in the theoretical exploitable accounting sea area, is the area of the j th level in the theoretical exploitable accounting sea area.

8. A wave energy resource assessment method apparatus characterised in that, ​ The wave data acquisition module is configured to acquire measured wave data and environmental data of the accounting sea area; the measured wave data includes wave height, wave period and wave direction data of different stations and different time periods in the accounting sea area; and the environmental data includes coastline data, sea area boundary data, water depth topography data and wind field data of the accounting sea area. The wave numerical model construction module is 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. The wave energy flux density accounting module is 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. The boundary grid node determination module is configured to determine a boundary grid unit on a boundary of the accounting sea area according to the boundary of the accounting sea area, 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. The actual wave energy flux density accounting module is 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 of the wave energy flux density in a direction pointing to the inside of the accounting sea area. The wave energy resource amount accounting module is 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 amount; the wave energy resource amount includes theoretical resource potential, technical resource potential and actual resource potential; the theoretical resource potential includes theoretical installed capacity, theoretical annual power generation, theoretical developable installed capacity and theoretical developable annual power generation; the technical resource potential includes technical developable installed capacity and technical developable annual power generation; and the actual resource potential includes actual developable installed capacity and actual developable annual power generation.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to realize the wave energy resource amount accounting method in any one of claims 1-7.

10. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to realize the wave energy resource amount accounting method in any one of claims 1-7.

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