Hydroelectric capacity design method based on engineering design and new energy complementary operation

Abstract

The invention provides a hydroelectric capacity design method based on engineering design and new energy complementary operation, which relates to the technical field of new energy, and comprises the following steps: preliminarily drawing up a base hydroelectric capacity scheme and calculating investment of a hydropower station according to design parameters of the base hydropower station; according to the type of a base power supply, drawing up power transmission curves of different hydroelectric capacity schemes; generating a to-be-simulated base power supply scheme based on the base power supply type and the power transmission curve; performing operation simulation on the to-be-simulated base power supply scheme to obtain a simulation result; determining a selectable base power supply scheme based on the simulation result; based on the investment of the hydropower station, multi-energy complementary comprehensive electricity prices of all the selectable base power supply schemes are calculated, and the base hydropower capacity scheme corresponding to the selectable base power supply scheme with the lowest multi-energy complementary comprehensive electricity price serves as a base hydropower capacity design result. According to the method, the supporting effect and economic benefits of the hydropower station in promoting new energy complementary operation can be fully considered.

Description

Background Art

[0002] With the dual carbon goals proposed and the gradual construction of a new energy system, new energy sources, mainly photovoltaic and wind power, are ushering in large-scale development and will become the main source of electricity in my country in the future.

[0003] However, the power generation method of renewable energy has significantly different characteristics from traditional energy systems. Wind and solar energy are constrained by natural conditions, and their output is highly random, volatile, and intermittent. This uncertainty has brought huge challenges to the stable operation of the power grid, especially after large-scale renewable energy is connected to the power grid, the design concept of stable load and controllable power supply of the traditional power system has gradually failed to meet the growing demand for renewable energy development. The traditional power system relies on a stable energy supply, and as the proportion of renewable energy gradually increases, the operational stability of the power grid faces severe tests.

[0004] Therefore, in order to ensure the reliability and security of the power system, the introduction of flexible resources has become particularly urgent. Among these flexible resources, regulating hydropower stations have become an important means to solve this problem with their unique advantages. Regulating hydropower stations are not only a clean energy source, but also have strong regulation and capacity support capabilities. They can quickly respond to changes in grid loads in a short period of time, adjust power supply, and alleviate the impact of the volatility of renewable energy generation on grid stability. Especially in areas with conditions, the construction of new regulating hydropower stations can not only increase the regulation capacity of the power system, but also provide strong guarantees for the grid connection of new energy.

[0005] The design method of traditional regulating hydropower stations is mainly based on the needs of serving provincial or regional power grids. The design focuses on the long-term regulation of water resources in the basin, and usually relies on the calculation of natural conditions such as the geological conditions, water energy reserves, and reservoir capacity of the river section where the hydropower station is located. Through methods such as runoff regulation and engineering design to estimate investment costs, traditional design methods meet the power system's needs for electricity, power, and peak regulation. However, this design method fails to take into account the driving role of the hydropower station's regulation capacity in the development of new energy, and cannot effectively reflect the overall benefits of hydropower stations in promoting the development of new energy and promoting complementary operations.

[0006] Therefore, it is urgent to propose a new capacity design method for regulating hydropower stations to fully reflect the economic benefits of hydropower stations in promoting the complementary operation of new energy sources and provide a scientific basis for the construction and planning of regulating hydropower stations. Summary of the invention

[0007] In order to overcome the problems existing in the related art, the present invention provides a hydropower capacity design method based on engineering design and complementary operation of new energy sources.

[0008] According to a first aspect of an embodiment of the present invention, there is provided a hydropower capacity design method based on engineering design and new energy complementary operation, the method comprising: S210: Preliminary preparation of the base hydropower capacity plan based on the design parameters of the base hydropower station; S220: Calculating the investment of the hydropower station based on the hydropower capacity plan; S230: Develop power transmission curves corresponding to different hydropower capacity plans according to the type of base power supply; S240: generating a base power supply scheme to be simulated based on the base power source type and the power transmission curves corresponding to the different hydropower capacity schemes; S250: Based on the hydropower station investment, a multi-energy complementary operation simulation is performed on the power supply scheme of the base to be simulated by using a time-series production simulation method to obtain a simulation result; S260: Determine whether the simulation result meets the preset condition. If so, output the current base power supply scheme to be simulated as an optional base power supply scheme; otherwise, adjust the base power supply configuration and return to S230; S270: Based on the investment in the hydropower station, the multi-energy complementary comprehensive electricity prices of all optional base power supply solutions are calculated, and the base hydropower capacity solution corresponding to the optional base power supply solution with the lowest multi-energy complementary comprehensive electricity price is used as the base hydropower capacity design result.

[0009] In some exemplary embodiments of the present invention, based on the above solution, the S220 includes: Based on the hydropower capacity plan, engineering design work is carried out; wherein the engineering design work includes: hub project layout, unit selection, construction organization design, construction land acquisition and resettlement of immigrants, environmental protection and soil and water conservation; Determine the engineering quantity of each engineering design work; Based on the engineering volume, calculate the investment in the hydropower station.

[0010] In some exemplary embodiments of the present invention, based on the above solution, the S240 includes: Determine the output operation constraints of each power source of the base according to the power transmission curve of the base hydropower capacity plan; Considering the power balance of UHV DC operation, the output of each power source is dispatched within the output operation constraint range of each power source of the base to generate a power supply plan for the base to be simulated.

[0011] In some exemplary embodiments of the present invention, based on the above scheme, the output operation constraints of each power source of the base include coal power / natural gas power generation output constraints, wind power output constraints, photovoltaic output constraints, energy storage power output constraints and solar thermal output constraints; the coal power / natural gas power generation output constraints Constraints include: in, For minimal technical effort, The installed capacity of coal / natural gas power generation; The hydropower Constraints include: in, is the installed capacity of hydropower, for hydroelectric power generation; The wind power output Constraints include: The photovoltaic output Constraints include: The energy storage power supply constraints include: in, is the wind power installed capacity, is the photovoltaic installed capacity, for Wind power output coefficient at each moment, for Photovoltaic output coefficient at each moment, is the installed capacity of energy storage, for Store energy and output it at all times. is the energy storage efficiency, for The energy stored in the energy storage power supply at all times, is the total energy storage capacity of the energy storage power source; The photothermal constraints include: in, is the installed capacity of solar thermal power, for The energy stored by light and heat at all times.

[0012] In some exemplary embodiments of the present invention, based on the above solution, the power balance of the UHV DC operation includes: in, is the UHV DC transmission power at time t, is the coal / natural gas power generation output at time t, is the hydropower output at time t, is the wind power output at time t, is the photovoltaic output at time t, is the output of the energy storage power source at time t, is the light and heat output at time t, is the purchased electricity at time t.

[0013] In some example embodiments of the present invention, based on the above scheme, in S250, based on the hydropower station investment, when the multi-energy complementary operation simulation is performed on the power supply scheme of the simulated base using a time-series production simulation method, the hydropower capacity design method based on engineering design and new energy complementary operation further includes: Considering the complementary operation characteristics of the base power source gravity, calculating the multi-energy complementary operation index; Among them, the multi-energy complementary operation indicators include channel utilization hours, new energy power abandonment rate and guarantee rate.

[0014] In some exemplary embodiments of the present invention, based on the above scheme, the channel utilization hours are calculated in the following manner: in, is the channel utilization hours, is the rated capacity of the channel, For coal / natural gas power generation, For hydroelectric power, The amount of wind power on the grid, is the photovoltaic grid-connected electricity, The energy storage power source loses power. is the photothermal electricity, For purchased electricity; The new energy curtailment rate It is calculated by: The guarantee rate is calculated in the following way: in, , For wind power and photovoltaic power abandonment, is the confidence coefficient, To guarantee the rate.

[0015] In some exemplary embodiments of the present invention, based on the above scheme, the calculation method of the multi-energy complementary comprehensive electricity price is: in, It is a comprehensive electricity price for multi-energy complementarity. The price of coal / gas power generation, For hydropower prices, The on-grid electricity price of wind power is is the photovoltaic grid-connected electricity price, For energy storage power source income, is the price of solar thermal electricity, The price of purchased electricity.

[0016] According to a second aspect of an embodiment of the present invention, there is provided a device for a hydropower capacity design method based on engineering design and complementary operation of new energy sources as described above, comprising: The preliminary plan preparation module is used to prepare a preliminary plan for the base hydropower capacity according to the design parameters of the base hydropower station; An investment calculation module, used for calculating the investment of the hydropower station based on the hydropower capacity plan; The power transmission curve formulation module is used to formulate power transmission curves corresponding to different hydropower capacity plans according to the type of base power supply; A power supply scheme generating module, used for generating a power supply scheme for the base to be simulated based on the power supply type of the base and the power transmission curves corresponding to the different hydropower capacity schemes; The comprehensive electricity price calculation module is used to perform multi-energy complementary operation simulation on the base power supply scheme to be simulated based on the investment of the hydropower station by using a time-series production simulation method to obtain a simulation result; determine whether the simulation result meets the preset conditions, and if so, output the current base power supply scheme to be simulated as an optional base power supply scheme; otherwise, adjust the base power supply configuration and return to the power transmission curve formulation module; The result output module is used to calculate the multi-energy complementary comprehensive electricity prices of all optional base power supply schemes based on the hydropower station investment, and take the base hydropower capacity scheme corresponding to the optional base power supply scheme with the lowest multi-energy complementary comprehensive electricity price as the base hydropower capacity design result.

[0017] According to a third aspect of an embodiment of the present invention, there is provided an electronic device, comprising: a processor; and a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the hydropower capacity design method based on engineering design and complementary operation of new energy is implemented in the first aspect.

[0018] According to a fourth aspect of an embodiment of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the hydropower capacity design method based on engineering design and complementary operation of new energy in the first aspect.

[0019] The technical solution provided by the embodiments of the present invention may have the following beneficial effects: In the embodiment of the present invention, by comprehensively considering the design parameters of the base hydropower station and the type of base power source, a reasonable hydropower capacity plan can be initially formulated, and the plan can be adjusted according to actual needs and engineering design requirements, so that the capacity of the hydropower station is more in line with the actual requirements of the power system for regulation capacity and load demand; by formulating the transmission curve of the base hydropower capacity plan and combining the timing production simulation, the complementary operation effect of various power sources (such as wind power, photovoltaic, etc.) can be accurately predicted, thereby optimizing the coordination of various types of power sources in the power system, reducing the rate of new energy abandonment, and improving the stability and economy of the system; through the timing production simulation, the multi-energy complementary comprehensive electricity price is calculated, so that the power system can more accurately evaluate the economy of different power supply plans, ensuring that the selected plan can not only meet the power system regulation needs, but also achieve economic optimization. In addition, the present invention can effectively balance the load regulation capacity between the hydropower station and other new energy sources through the coordinated operation of system optimization design and new energy power sources, provide stronger guarantees for the stable operation of the power system, and promote the efficient grid connection and long-term stable operation of new energy sources.

[0020] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0022] Figure 1 A schematic diagram showing a system architecture of an exemplary application environment of a hydropower capacity design method and device based on engineering design and new energy complementary operation to which an embodiment of the present invention can be applied; Figure 2 Schematically showing a flow chart of a hydropower capacity design method based on engineering design and new energy complementary operation according to some embodiments of the present invention; Figure 3 Schematically illustrates a schematic diagram of a hydropower capacity design device based on engineering design and complementary operation of new energy sources according to some embodiments of the present invention; Figure 4 A schematic diagram schematically shows a structure of a computer system of an electronic device according to some embodiments of the present invention; Figure 5 A schematic diagram of a computer-readable storage medium according to some embodiments of the present invention is schematically shown. DETAILED DESCRIPTION

[0023] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0024] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0025] It should be understood that although the terms first, second, third, etc. may be used in the present invention to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0026] Figure 1 A schematic diagram of a system architecture of an exemplary application environment of a hydropower capacity design method based on engineering design and complementary operation of new energy sources, to which an embodiment of the present invention can be applied, is shown.

[0027] like Figure 1 As shown, the system architecture 100 may include one or more terminal devices such as a desktop computer 101, a portable computer 102, a smart phone 103, a network 104, and a server 105. The network 104 is used to provide a medium for a communication link between the terminal device and the server 105. The network 104 may include various connection types, such as wired or wireless communication links or optical fiber cables, etc. The terminal device may be various electronic devices with data processing functions, and the electronic device has a display screen, which is used to display the hydropower capacity design results to the user, including but not limited to the above-mentioned desktop computers, portable computers, smart phones, etc. It should be understood that Figure 1 The number of terminal devices, networks and servers in the embodiment is only for illustration. According to the implementation requirements, there may be any number of terminal devices, networks and servers. For example, the server 105 may be a sub-server cluster composed of multiple sub-servers.

[0028] The hydropower capacity design method based on engineering design and new energy complementary operation provided in the embodiment of the present invention can generally be executed by a terminal device, and accordingly, the hydropower capacity design device based on engineering design and new energy complementary operation is generally set in the terminal device. However, it is easy for those skilled in the art to understand that the hydropower capacity design method based on engineering design and new energy complementary operation provided in the embodiment of the present invention can also be executed by the server 105, and accordingly, the hydropower capacity design device based on engineering design and new energy complementary operation can also be set in the server 105, which is not particularly limited in this exemplary embodiment.

[0029] In addition, it should be understood that the hydropower capacity design method based on engineering design and new energy complementary operation of the embodiment of the present invention can be configured as a software module. In some implementation scenarios, the hydropower capacity design scheme based on engineering design and new energy complementary operation of the present invention can be deployed separately to achieve the generation of hydropower capacity design schemes for different bases. In other implementation scenarios, the hydropower capacity design scheme based on engineering design and new energy complementary operation of the present invention can be deployed in other software as a functional module of the software, such as deployed in the analysis software of hydropower capacity. The present invention does not place any special restrictions on the application of the hydropower capacity design method based on engineering design and new energy complementary operation.

[0030] Next, the embodiments of the present invention are described in detail.

[0031] like Figure 2 As shown, Figure 2 The present invention is a flowchart of a hydropower capacity design method based on engineering design and new energy complementary operation according to an exemplary embodiment of the present invention, comprising the following steps: S210: Preliminary preparation of the base hydropower capacity plan based on the design parameters of the base hydropower station; S220: Calculating the investment of the hydropower station based on the hydropower capacity plan; S230: Develop power transmission curves corresponding to different hydropower capacity plans according to the type of base power supply; S240: generating a base power supply scheme to be simulated based on the base power source type and the power transmission curves corresponding to the different hydropower capacity schemes; S250: Based on the hydropower station investment, a multi-energy complementary operation simulation is performed on the power supply scheme of the base to be simulated by using a time-series production simulation method to obtain a simulation result; S260: Determine whether the simulation result meets the preset condition. If so, output the current base power supply scheme to be simulated as an optional base power supply scheme; otherwise, adjust the base power supply configuration and return to S230; S270: Based on the investment in the hydropower station, the multi-energy complementary comprehensive electricity prices of all optional base power supply solutions are calculated, and the base hydropower capacity solution corresponding to the optional base power supply solution with the lowest multi-energy complementary comprehensive electricity price is used as the base hydropower capacity design result.

[0032] In S210, a base hydropower capacity plan is preliminarily prepared according to the design parameters of the base hydropower station.

[0033] The design parameters of the base hydropower station may be various conditions and basic data required for the design of the hydropower station. In some implementations, the design parameters of the base hydropower station include construction conditions, power generation, etc. of the hydropower station.

[0034] Among them, the construction conditions of hydropower stations are the basic parameters that affect the design of hydropower capacity schemes, mainly including: water energy reserves, geological conditions, reservoir formation conditions, environmental and ecological conditions, etc. Water energy reserves refer to the water resource potential of the area where the hydropower station is located, which is usually expressed by the annual runoff of the basin. It is necessary to collect and analyze local hydrological data, such as average annual precipitation, basin area, flow changes, etc. Geological conditions include soil structure, seismic activity, rock formation stability, etc. in the area where the hydropower station is located. The survey of geological conditions can help determine the construction method of the hydropower station (such as whether an underground reservoir is needed, whether conventional dam construction can be used, etc.), thereby affecting the total installed capacity and power generation capacity of the hydropower station. Reservoir formation conditions refer to the size of the reservoir and the water level difference required for reservoir construction. By understanding factors such as the slope of the river, the height of the dam, and the stability of the dam body, the adjustable capacity of the reservoir can be determined. The larger the reservoir capacity, the more water that can be stored and adjusted, and the larger the power generation capacity of the hydropower station. The construction of a hydropower station will have a certain impact on the ecological environment. Therefore, it is necessary to evaluate the ecological environment of the area where it is located. Assessments of environmental conditions, including local ecologically sensitive areas, fish migration routes, and river biodiversity, can help adjust design plans to ensure that hydropower stations meet power generation needs while minimizing ecological impacts.

[0035] Power generation is an important indicator for hydropower capacity design, which is mainly estimated through the following parameters: The annual power generation is estimated by analyzing the water energy reserves of the basin and the conditions for the formation of reservoir capacity, combined with the flow dynamics of the basin, usually based on the following formula: in, is the annual power generation, is the generator efficiency, is the density of water, is the acceleration due to gravity, is the water flow rate, is the effective water head.

[0036] Generator configuration: select the appropriate number and type of generators based on the estimated annual power generation and water energy reserves. For example, choose hydroelectric generators, pumped storage units, etc., and match them according to design requirements. The selection of generators will also be affected by the local water flow rate and water head, so you can choose a model that is suitable for the hydrological conditions.

[0037] Based on this, the preliminary proposed base hydropower capacity plan may include: Installed capacity of hydropower station: including total installed capacity, single unit capacity and number of units, etc.

[0038] Annual power generation: Annual power generation calculated based on hydropower reserves and water flow dynamics in the basin.

[0039] Regulation capacity: The regulation capacity of a hydropower station under different load conditions, including peak regulation capacity and scheduling flexibility.

[0040] Power supply access solution: A design that complements other power sources (such as wind power, photovoltaic power, etc.) to ensure a power supply combination that ensures stable operation of the system.

[0041] In S220, the investment in the hydropower station is calculated based on the hydropower capacity plan.

[0042] In some embodiments, this process may include: Based on the hydropower capacity plan, engineering design work is carried out; wherein the engineering design work includes: hub project layout, unit selection, construction organization design, construction land acquisition and resettlement of immigrants, environmental protection and soil and water conservation; Determine the engineering quantity of each engineering design work; Based on the engineering volume, calculate the investment in the hydropower station.

[0043] Based on this, the investment in a hydropower station can include civil engineering costs, equipment procurement and installation costs, infrastructure and supporting project costs, land acquisition and resettlement costs, environmental protection and ecological restoration costs, and operation and maintenance costs.

[0044] Among them, civil engineering costs Including the cost of infrastructure construction such as dam construction, machine room construction, water inlet, drainage facilities, water tunnels, channels, etc. Equipment procurement and installation costs Mainly includes the purchase and installation costs of hydro-generator sets, power transformers, automatic control systems and other equipment. Infrastructure and supporting project costs Including access roads, transportation equipment, temporary office facilities, living facilities, etc. Land acquisition and resettlement costs Calculate the cost of land acquisition and resettlement based on the land conditions and relocation needs of the area where the hydropower station is to be built. Environmental protection and ecological restoration costs This includes considering the impact of the hydropower station on the environment and calculating the costs of the ecological protection and restoration projects that need to be carried out. Operation and maintenance costs It mainly includes the operation, management and maintenance costs after the construction of the hydropower station.

[0045] By making a detailed estimate of the costs of each investment component, the budget for each project is obtained: in, Represents the total investment budget of the hydropower station.

[0046] In S230, according to the type of base power source, power transmission curves corresponding to different hydropower capacity plans are formulated.

[0047] In some embodiments, the base power source types include hydropower, wind power, etc. In other embodiments, the base power source types include hydropower, wind power, photovoltaic, energy storage system, solar thermal, etc. These power source types are determined according to the base conditions.

[0048] According to the power generation characteristics of the above-mentioned power sources, a power transmission curve for each power source is formulated. The power transmission curve is obtained through simulation of mathematical models and historical data, and represents the power generation capacity and power output of the hydropower station under different time periods and load conditions.

[0049] For hydropower, its output curve can be calculated based on the hydrological data of the basin and the regulation capacity of the reservoir. The hourly hydropower output can be estimated using historical water flow data and hydropower station dispatching rules.

[0050] For wind power and photovoltaics, their output curves can use wind speed and light data, combined with the efficiency curves of wind power and photovoltaics, to simulate wind power and photovoltaic output in different time periods.

[0051] For the energy storage system, the charging and discharging curves of the energy storage system can be calculated based on the grid load curve and the charging and discharging rules of the energy storage system.

[0052] On this basis, after determining the individual output of each power source, it can be integrated into a total power transmission curve. According to the synergy between the power sources, the dispatch is optimized to ensure that the power transmission curve can meet the load demand of the power system.

[0053] In other embodiments, the transmission curve can be optimized by smoothing fluctuations, minimizing power abandonment rate, and load matching methods to ensure that as much renewable energy electricity as possible can be effectively utilized while ensuring sufficient power supply during peak grid load.

[0054] In S240, a base power supply scheme to be simulated is generated based on the base power type and the power transmission curves corresponding to the different hydropower capacity schemes.

[0055] In some embodiments, this step can be further expanded as follows: Determine the output operation constraints of each power source of the base according to the power transmission curve of the base hydropower capacity plan; Considering the power balance of UHV DC operation, the output of each power source is dispatched within the output operation constraint range of each power source of the base to generate a power supply plan for the base to be simulated.

[0056] In the implementation manner of the present invention, since the types of base power sources include hydropower, wind power, photovoltaics, energy storage systems, solar thermal power, etc., accordingly, the output operation constraints of each power source of the base include coal-fired power / natural gas power generation output constraints, wind power output constraints, photovoltaic output constraints, energy storage power supply output constraints and solar thermal power output constraints.

[0057] Coal / gas power generation output Constraints include: in, For minimal technical effort, The installed capacity of coal / natural gas power generation; The hydropower Constraints include: in, is the installed capacity of hydropower, for hydroelectric power generation; The wind power output Constraints include: The photovoltaic output Constraints include: The energy storage power supply constraints include: in, is the wind power installed capacity, is the photovoltaic installed capacity, for Wind power output coefficient at each moment, for Photovoltaic output coefficient at each moment, is the installed capacity of energy storage, for Store energy and output it at all times. is the energy storage efficiency, for The energy stored in the energy storage power supply at all times, is the total energy storage capacity of the energy storage power source; The photothermal constraints include: in, is the installed capacity of solar thermal power, for The energy stored by light and heat at all times.

[0058] The power balance of UHV DC operation includes: in, is the UHV DC transmission power at time t, is the coal / natural gas power generation output at time t, is the hydropower output at time t, is the wind power output at time t, is the photovoltaic output at time t, is the output of the energy storage power source at time t, is the light and heat output at time t, is the purchased electricity at time t.

[0059] The output operating constraints of the base power source types determine the power generation capacity of each type of power source, which in turn affects the shape of the transmission curve. The power balance requirement of UHV DC operation ensures the stable transmission of electricity, and the transmission curve must meet this power balance requirement. By optimizing the output of power sources and flexible scheduling (for example, using the regulation capacity of hydropower and the charging and discharging capacity of energy storage systems), the stable operation of the power grid can be ensured, and the UHV DC system can smoothly transmit electricity under different load conditions.

[0060] In S250, based on the investment in the hydropower station, a multi-energy complementary operation simulation is performed on the power supply scheme of the base to be simulated using a sequential production simulation method to obtain a simulation result.

[0061] Here, since there are several base power supply schemes to be simulated, when performing simulation, it is necessary to simulate all the base power supply schemes to be simulated.

[0062] Multi-energy complementation refers to the coordinated work of multiple energy forms (such as hydropower, wind power, photovoltaics, energy storage, etc.) in a power system to compensate for the volatility, intermittency and uncertainty of each energy source, thereby improving the stability and efficiency of the system. In the base power supply solution, hydropower, wind power, photovoltaics and other power sources work together to complement each other's grid load fluctuations and ensure the continuity of power supply. When simulating the operation of multi-energy complementation, the output fluctuations of these power sources under different load demands, climatic conditions and grid operation conditions are considered, and their combined effects are simulated.

[0063] Time-series production simulation is a simulation method that predicts power output in different time periods by simulating the actual operation of various power sources. This method usually takes into account multiple variables, including the time-varying characteristics of power sources, grid load demand, climate change, etc. It includes steps such as determining the simulation time range, collecting historical data, simulating multi-energy complementary operation, and calculating the comprehensive electricity price of multi-energy complementary.

[0064] When simulating the multi-energy complementary operation of the base power supply scheme by using a sequential production simulation method, the present invention also considers the complementary operation characteristics of the base power supply gravity and calculates the multi-energy complementary operation index. Therefore, in the implementation mode of the present invention, the simulation result can be understood as the multi-energy complementary operation index.

[0065] Among them, the multi-energy complementary operation indicators include channel utilization hours, new energy power abandonment rate and guarantee rate.

[0066] Channel utilization hours are calculated as follows: in, is the channel utilization hours, is the rated capacity of the channel, For coal / natural gas power generation, For hydroelectric power, The amount of wind power on the grid, is the photovoltaic grid-connected electricity, The energy storage power source loses power. is the photothermal electricity, For purchased electricity; The new energy curtailment rate It is calculated by: The guarantee rate is calculated in the following way: in, , For wind power and photovoltaic power abandonment, is the confidence coefficient, To guarantee the rate.

[0067] In S260, it is determined whether the simulation result meets the preset conditions. If so, the current base power supply scheme to be simulated is output as an optional base power supply scheme; otherwise, the base power supply configuration is adjusted and the process returns to S230.

[0068] The core of the judgment process is to evaluate the comprehensive electricity price of multi-energy complementary and compare it with the preset conditions. The preset conditions usually include the following aspects: Economic requirements: A maximum allowable comprehensive electricity price is set based on factors such as the project investment payback period, capital return rate, and power generation costs. For example, the electricity price cannot exceed a certain upper limit, otherwise it will be considered uneconomical.

[0069] Load demand satisfaction: The comprehensive electricity price must reflect that the power system can operate stably under different load demands, so it is necessary to ensure that the electricity price matches the load demand of the power grid.

[0070] Cost-effectiveness: The comprehensive electricity price should reasonably reflect the operating costs and dispatching fees of different power sources to ensure the economic feasibility of the long-term operation of the power grid system. If the comprehensive electricity price is too high, it means that the system operating costs are too high and the power supply configuration needs to be optimized.

[0071] Environmental and policy requirements: Sometimes it is necessary to consider the constraints of environmental protection policies, such as limiting the use of high-carbon emission energy or promoting the proportion of renewable energy. The comprehensive electricity price should comply with the green energy policy requirements of the national or local government.

[0072] When the calculated multi-energy complementary comprehensive electricity price meets the preset conditions, the base power supply plan can be confirmed as the final base power supply plan. At this point, the entire power supply combination has passed the time-series production simulation and comprehensive electricity price evaluation, meeting the requirements of economy, stability and environmental protection, and is suitable for actual deployment of the power system.

[0073] In general, when the simulation results do not meet the preset conditions, the configuration scale of various power sources can be changed, such as the scale of coal power, wind power, photovoltaic power, pumped storage, etc. (installed capacity, guaranteed output, annual power generation, etc.), and the power transmission curve corresponding to the hydropower capacity plan can be re-drafted and simulated. When the configuration scale of the above-mentioned various power sources exceeds the reasonable range and the simulation results still do not meet the preset conditions, the change of the power configuration scale can include the type of power source. At this time, the type of power source is changed and return to S230.

[0074] In S270, based on the investment in the hydropower station, the multi-energy complementary comprehensive electricity prices of all optional base power supply solutions are calculated, and the base hydropower capacity solution corresponding to the optional base power supply solution with the lowest multi-energy complementary comprehensive electricity price is used as the base hydropower capacity design result.

[0075] The calculation method of the comprehensive electricity price of multi-energy complementary is: in, It is a comprehensive electricity price for multi-energy complementarity. The price of coal / gas power generation, For hydropower prices, The on-grid electricity price of wind power is is the photovoltaic grid-connected electricity price, For energy storage power source income, is the price of solar thermal electricity, The price of purchased electricity.

[0076] According to a second aspect of an embodiment of the present invention, there is also provided a hydropower capacity design device based on engineering design and new energy complementary operation, referring to Figure 3 As shown, the hydropower capacity design device based on engineering design and new energy complementary operation includes: A preliminary plan preparation module 310 is used to preliminarily prepare a base hydropower capacity plan based on the design parameters of the base hydropower station; An investment calculation module 320, for calculating the investment of a hydropower station based on the hydropower capacity plan; The power transmission curve drawing module 330 is used to draw up power transmission curves corresponding to different hydropower capacity plans according to the type of base power supply; A power scheme generating module 340, configured to generate a power scheme for the base to be simulated based on the base power type and the power transmission curves corresponding to the different hydropower capacity schemes; The comprehensive electricity price calculation module 350 is used to perform multi-energy complementary operation simulation on the base power supply scheme to be simulated based on the investment of the hydropower station by using a time-series production simulation method to obtain a simulation result; determine whether the simulation result meets a preset condition, and if so, output the current base power supply scheme to be simulated as an optional base power supply scheme; otherwise, adjust the base power supply configuration and return to the power transmission curve formulation module; The result output module 360 ​​is used to calculate the multi-energy complementary comprehensive electricity prices of all optional base power supply solutions based on the hydropower station investment, and use the base hydropower capacity solution corresponding to the optional base power supply solution with the lowest multi-energy complementary comprehensive electricity price as the base hydropower capacity design result.

[0077] It should be noted that although several modules of the hydropower capacity design device based on engineering design and complementary operation of new energy sources are mentioned in the above detailed description, this division is not mandatory. In fact, according to an embodiment of the present invention, the features and functions of two or more modules described above can be embodied in one module or unit. Conversely, the features and functions of one module described above can be further divided into multiple modules for embodiment.

[0078] Furthermore, in an exemplary embodiment of the present invention, an electronic device is provided that can implement a hydropower capacity design method based on engineering design and new energy complementary operation.

[0079] Those skilled in the art will appreciate that various aspects of the present invention may be implemented as systems, methods or program products. Therefore, various aspects of the present invention may be specifically implemented in the following forms, namely: complete hardware embodiments, complete software embodiments (including firmware, microcode, etc.), or embodiments combining hardware and software aspects, which may be collectively referred to herein as "circuits", "modules" or "systems".

[0080] Refer to the following Figure 4 An electronic device 400 according to such an embodiment of the present invention is described. Figure 4 The electronic device 400 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0081] like Figure 4 As shown, the electronic device 400 is in the form of a general computing device. The components of the electronic device 400 may include but are not limited to: the at least one processing unit 410, the at least one storage unit 420, a bus 430 connecting different system components (including the storage unit 420 and the processing unit 410), and a display unit 440.

[0082] The storage unit stores program codes, which can be executed by the processing unit 410, so that the processing unit 410 performs the steps of various exemplary embodiments of the present invention described in the above “Exemplary Method” section. For example, the processing unit 410 can perform the following steps: Figure 2 S210 shown in: According to the design parameters of the base hydropower station, a base hydropower capacity plan is preliminarily formulated; S220: Based on the hydropower station investment, the hydropower station investment is calculated; S230: According to the base power type, power transmission curves corresponding to different hydropower capacity plans are formulated; S240: Based on the base power type and the power transmission curves of the different hydropower capacity plans, a base power plan is generated; S250: Based on the hydropower station investment, the base power plan is simulated for multi-energy complementary operation using a time-series production simulation method to obtain a multi-energy complementary comprehensive electricity price; S260: Determine whether the multi-energy complementary comprehensive electricity price meets the preset conditions. If so, the base power plan is used as the final base power plan; otherwise, the base power configuration is adjusted and returned to S230; S270: The base hydropower capacity plan corresponding to the final base power plan is used as the base hydropower capacity design result.

[0083] The storage unit 420 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 421 and / or a cache memory unit 422 , and may further include a read-only memory unit (ROM) 423 .

[0084] The storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0085] Bus 430 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0086] The electronic device 400 may also communicate with one or more external devices 470 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 400, and / or communicate with any device that enables the electronic device 400 to communicate with one or more other computing devices (e.g., routers, modems, etc.). This communication may be performed through an input / output (I / O) interface 450. In addition, the electronic device 400 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) through a network adapter 460. As shown, the network adapter 460 communicates with other modules of the electronic device 400 through a bus 430. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0087] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the exemplary embodiments described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the embodiment of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiment of the present invention.

[0088] In an exemplary embodiment of the present invention, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present invention is stored. In some possible embodiments, various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to perform the steps of various exemplary embodiments of the present invention described in the above "Exemplary Method" section of the present invention.

[0089] refer to Figure 5 As shown, a program product 500 for implementing the above-mentioned hydropower capacity design method based on engineering design and complementary operation of new energy sources according to an embodiment of the present invention is described, which can adopt a portable compact disk read-only memory (CD-ROM) and include program code, and can be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto. In the present invention, the readable storage medium can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, an apparatus or a device.

[0090] The program product may use any combination of one or more readable storage media. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0091] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0092] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0093] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the exemplary embodiments described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the embodiment of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiment of the present invention.

[0094] Other embodiments of the invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

[0095] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A hydropower capacity design method based on engineering design and complementary operation of new energy sources, characterized in that: include: S210: Preliminary preparation of the base hydropower capacity plan based on the design parameters of the base hydropower station; S220: Calculating the investment of the hydropower station based on the hydropower capacity plan; S230: Develop power transmission curves corresponding to different hydropower capacity plans according to the type of base power supply; S240: generating a base power supply scheme to be simulated based on the base power source type and the power transmission curves corresponding to the different hydropower capacity schemes; S250: Based on the hydropower station investment, a multi-energy complementary operation simulation is performed on the power supply scheme of the base to be simulated by using a time-series production simulation method to obtain a simulation result; S260: Determine whether the simulation result meets a preset condition, and if so, output the current base power supply scheme to be simulated as an optional base power supply scheme; Otherwise, adjust the base power configuration and return to S230; S270: Based on the investment in the hydropower station, the multi-energy complementary comprehensive electricity prices of all optional base power supply solutions are calculated, and the base hydropower capacity solution corresponding to the optional base power supply solution with the lowest multi-energy complementary comprehensive electricity price is used as the base hydropower capacity design result.

2. The hydropower capacity design method based on engineering design and new energy complementary operation according to claim 1 is characterized in that: The S220 includes: Based on the hydropower capacity plan, engineering design work is carried out; wherein the engineering design work includes: hub project layout, unit selection, construction organization design, construction land acquisition and resettlement of immigrants, environmental protection and soil and water conservation; Determine the engineering quantity of each engineering design work; Based on the engineering volume, calculate the investment in the hydropower station.

3. The hydropower capacity design method based on engineering design and complementary operation of new energy sources according to claim 1 is characterized in that: The S240 includes: Determine the output operation constraints of each power source of the base according to the power transmission curve of the base hydropower capacity plan; Considering the power balance of UHV DC operation, the output of each power source is dispatched within the output operation constraint range of each power source of the base to generate a power supply plan for the base to be simulated.

4. The hydropower capacity design method based on engineering design and complementary operation of new energy sources according to claim 3 is characterized in that: The output operation constraints of each power source in the base include coal / natural gas power generation output constraints, hydropower output constraints, wind power output constraints, photovoltaic output constraints, energy storage power output constraints and solar thermal output constraints; Coal / gas power generation output Constraints include: in, For minimal technical effort, The installed capacity of coal / natural gas power generation; The hydropower output Constraints include: in, is the installed capacity of hydropower, for hydroelectric power generation; The wind power output Constraints include: The photovoltaic output Constraints include: The energy storage power supply constraints include: in, is the wind power installed capacity, is the photovoltaic installed capacity, for Wind power output coefficient at each moment, for Photovoltaic output coefficient at each moment, is the installed capacity of energy storage, for Store energy and output it at all times. is the energy storage efficiency, for The energy stored in the energy storage power supply at all times, is the total energy storage capacity of the energy storage power source; The photothermal constraints include: in, is the installed capacity of solar thermal power, for The energy stored by light and heat at all times.

5. The hydropower capacity design method based on engineering design and complementary operation of new energy sources according to claim 3 is characterized in that: The power balance of the UHV DC operation includes: in, is the UHV DC transmission power at time t, is the coal / natural gas power generation output at time t, is the hydropower output at time t, is the wind power output at time t, is the photovoltaic output at time t, is the output of the energy storage power source at time t, is the light and heat output at time t, is the purchased electricity at time t.

6. The hydropower capacity design method based on engineering design and new energy complementary operation according to claim 1 is characterized in that: In S250, based on the hydropower station investment, when the multi-energy complementary operation simulation is performed on the power supply scheme of the simulated base by using a time-series production simulation method, the hydropower capacity design method based on engineering design and new energy complementary operation also includes: Considering the complementary operation characteristics of the base power source gravity, calculating the multi-energy complementary operation index; Among them, the multi-energy complementary operation indicators include channel utilization hours, new energy power abandonment rate and guarantee rate.

7. The hydropower capacity design method based on engineering design and complementary operation of new energy sources according to claim 6 is characterized in that: The channel utilization hours are calculated as follows: in, is the channel utilization hours, is the rated capacity of the channel, For coal / natural gas power generation, For hydroelectric power, The amount of wind power on the grid, is the photovoltaic grid-connected electricity, The energy storage power source loses power. is the photothermal electricity, For purchased electricity; The new energy curtailment rate It is calculated by: The guarantee rate is calculated in the following way: in, , For wind power and photovoltaic power abandonment, is the confidence coefficient, To guarantee the rate.

8. The hydropower capacity design method based on engineering design and complementary operation of new energy sources according to any one of claims 1 to 7, characterized in that: The calculation method of the multi-energy complementary comprehensive electricity price is: in, It is a comprehensive electricity price for multi-energy complementarity. The price of coal / gas power generation, For hydropower prices, The on-grid electricity price of wind power is is the photovoltaic grid-connected electricity price, For energy storage power revenue, is the price of solar thermal electricity, The price of purchased electricity.

9. A device for designing hydropower capacity based on engineering design and complementary operation of new energy sources as claimed in any one of claims 1 to 8, characterized in that: include: The preliminary plan preparation module is used to prepare a preliminary plan for the base hydropower capacity according to the design parameters of the base hydropower station; An investment calculation module, used for calculating the investment of the hydropower station based on the hydropower capacity plan; The power transmission curve formulation module is used to formulate power transmission curves corresponding to different hydropower capacity plans according to the type of base power supply; A power supply scheme generating module, used for generating a power supply scheme for the base to be simulated based on the power supply type of the base and the power transmission curves corresponding to the different hydropower capacity schemes; A comprehensive electricity price calculation module is used to perform multi-energy complementary operation simulation on the power supply scheme of the base to be simulated based on the investment of the hydropower station by using a time-series production simulation method to obtain a simulation result; Determine whether the simulation result meets the preset conditions, and if so, output the current base power supply scheme to be simulated as an optional base power supply scheme; Otherwise, adjust the base power configuration and return to the power transmission curve formulation module; The result output module is used to calculate the multi-energy complementary comprehensive electricity prices of all optional base power supply schemes based on the hydropower station investment, and take the base hydropower capacity scheme corresponding to the optional base power supply scheme with the lowest multi-energy complementary comprehensive electricity price as the base hydropower capacity design result.

10. An electronic device, characterized in that: include: processor; as well as A memory having computer-readable instructions stored thereon, wherein the computer-readable instructions, when executed by the processor, implement the hydropower capacity design method based on engineering design and complementary operation of new energy as described in any one of claims 1 to 8.

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