Method and device for planning clean energy power transmission system based on Saggos district

Abstract

The invention provides a method and device for planning a clean energy power transmission system based on a Saggob region, and relates to the technical field of clean energy. The method comprises the following steps: determining a clean energy reference output and a receiving end power utilization rule of a sending end province in the Saggob region; initializing a power station parameter of a target power station of a sending end province of the Sagomean region; generating a target power transmission curve according to the clean energy reference output, the receiving end power utilization rule, the power station parameters and a preset power transmission rule; based on the power station parameters corresponding to the target power transmission curve and a preset power transmission rule, constructing a power production time sequence model; and performing analogue simulation based on the power production time sequence model, adjusting power station parameters to obtain a final power transmission reference curve meeting a power transmission objective function and power transmission constraint conditions, and taking the adjusted power station parameters as power station construction reference parameters. Based on the technical scheme, technical guarantee can be provided for a power transmission system of clean energy.

Description

Technical Field

[0001] The present disclosure relates to the field of clean energy technology, and in particular to a method and device for planning a clean energy power transmission system based on a Shagohuang area. Background Art

[0002] With the shift from dual control of energy consumption to dual control of carbon emissions and the continuous increase in the responsibility weight of non-water consumption, the demand for renewable energy electricity in the central, eastern and southern regions is becoming increasingly urgent.

[0003] China's energy resources and electricity demand are showing an inverse distribution trend. It is an inevitable trend to export clean energy resources in deserts, Gobi and wasteland areas to power-deficient provinces through UHV DC power. Clean energy power generation fluctuates randomly according to power. Its randomness, volatility and intermittency pose huge challenges to the reliable supply of power to the receiving power grid of the power system dominated by clean energy. The risk of large-scale 100% clean energy bases participating in power market transactions has increased dramatically, and the income guarantee of power sales objects has been threatened.

[0004] At present, there is no mature power trading strategy for the power transmission from the clean energy base in the Shagohuang area, and providing a power supply strategy for the power transmitted by clean energy has become an urgent problem to be solved.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] In order to overcome the problems existing in the related technologies, the embodiments of the present disclosure provide a method and device for planning a clean energy power transmission system based on the Shagohuang area, which can provide a path for the DC channel transmission planning work of the clean energy base in the Shagohuang area, so as to provide a technical reference for the safe, stable and reliable protection of the power transmission system.

[0007] According to a first aspect of an embodiment of the present disclosure, a method for planning a clean energy power transmission system based on a Shagohuang area is provided, the method comprising: determining a clean energy reference output and a receiving-end power consumption pattern of a sending province in the Shagohuang area; initializing power station parameters of a target power station in a sending province in the Shagohuang area, the target power station comprising a clean energy power generation power station and a storage power station in the Shagohuang area; generating a target power transmission reference curve according to the clean energy reference output, the receiving-end power consumption pattern, the power station parameters and preset power transmission rules; constructing a power production timing model based on the power station parameters and preset power transmission rules corresponding to the target power transmission reference curve; performing simulation based on the power production timing model, adjusting the power station parameters, obtaining a final power transmission reference curve that meets the power transmission objective function and the power transmission constraints, and using the adjusted power station parameters as reference parameters for power station construction.

[0008] Optionally, obtain at least one full-year benchmark output series data of clean energy in the sending province of the Shagohuang area, wherein the benchmark output series data is data of a preset time scale; determine the full-year output of at least one clean energy with the highest probability in a full year as the typical benchmark output of clean energy; based on the typical benchmark output of clean energy, calculate the cumulative power output of clean energy in each month on a monthly scale, and perform cumulative power frequency arrangement; take the output of one day in each month whose cumulative power frequency arrangement meets the preset probability as the representative output of each month, and obtain 12 representative outputs; determine the 12 representative outputs as the reference output of clean energy.

[0009] Optionally, the original load curve and residual load curve of the receiving end are obtained; and the duration intervals of the noon peak, evening peak and other time periods of the receiving end are determined based on the original load curve and the residual load curve.

[0010] Optionally, an initial power transmission reference curve is generated according to the clean energy reference output, the power consumption pattern of the receiving end and the power station parameters; based on the initial power transmission reference curve, it is determined whether the power transmission situation of the clean energy multi-energy complementary system under the initialized power station parameters meets the preset power transmission rules, and the clean energy multi-energy complementary system includes a target power station; if the preset power transmission rules are not met, the power transmission capacity of the initial power transmission reference curve is adjusted based on the power consumption pattern of the receiving end to obtain an adjusted power transmission reference curve, and based on the adjusted power transmission reference curve, it is re-judged whether the power transmission situation of the clean energy multi-energy complementary system meets the preset power transmission rules; if the preset power transmission rules are not met, the adjusted power transmission reference curve is continued to be adjusted based on the power consumption pattern of the receiving end; if the preset power transmission rules are met, the adjusted power transmission reference curve is determined as the target power transmission reference curve; wherein the preset power transmission rules are: the second percentage of the energy storage capacity of the energy storage power station during the lunch peak is used for power generation of the energy storage power station during the evening peak, and the lunch peak power transmission capacity is greater than the evening peak power transmission capacity.

[0011] Optionally, if the second percentage of the energy storage capacity during the midday peak does not satisfy the power generation during the evening peak, the power transmission capacity during the midday peak is reduced; if the preset power transmission rules are not met after the midday peak power transmission capacity is reduced, the power transmission capacity during the evening peak or other time periods continues to be reduced.

[0012] Optionally, the power transmission objective function includes a first objective function and a second objective function; the first objective function is to generate the net present value of clean energy in the sending province of the Shagohuang area based on the electricity sales price, the grid-connected electricity and the total project cost of the target power station in the sending province of the Shagohuang area; the second objective function is the peak period guarantee rate of the receiving end; wherein the total project cost includes: initial investment cost, project cycle replacement cost, operation and maintenance cost and electricity purchase cost; the clean energy power station includes at least one of the following: wind farm power station, photovoltaic power station; the energy storage power station includes at least one of the following: pumped storage power station, electrochemical energy storage power station; the constraint conditions include at least one of the following: system constraints of the clean energy multi-energy complementary system in the sending province of the Shagohuang area, clean energy power supply constraints, pumped storage power station constraints, electrochemical energy storage power station constraints, power abandonment rate constraints, power transmission capacity constraints, channel utilization hour constraints and power shortage rate constraints.

[0013] Optionally, a simulation is performed based on the first power production timing model. If the power transmission objective function and the power transmission constraints are not met, the first power station parameters are adjusted to the second power station parameters; a simulation is performed on the second power production timing model generated based on the second power station parameters to determine whether the power transmission objective function and the power transmission constraints are met. If the objective function and the power transmission constraints are met, the second power station parameters are used as reference parameters for power station construction, and a second power transmission reference curve generated based on the second power station parameters is determined as the final power transmission reference curve; wherein the target power transmission reference curve corresponding to the first power station parameters is the first power transmission reference curve, and the target power transmission reference curve corresponding to the second power station parameters is the second power transmission reference curve.

[0014] According to a second aspect of an embodiment of the present disclosure, there is provided a device for planning a power transmission system based on clean energy in a Shagohuang area, and the device for planning a power transmission system based on clean energy in a Shagohuang area comprises: a determination module, an initialization module, a generation module, a construction module and a simulation module; the determination module is used to determine the clean energy reference output and the power consumption pattern of the receiving end of the sending province in the Shagohuang area; the initialization module is used to initialize the power station parameters of the target power station in the sending province in the Shagohuang area, and the target power station includes the clean energy power generation power station and the energy storage power station in the Shagohuang area; the generation module is used to generate a target power transmission reference curve according to the clean energy reference output, the power consumption pattern of the receiving end, the power station parameters and the preset power transmission rules; the construction module is used to construct a power production timing model based on the power station parameters and the preset power transmission rules corresponding to the target power transmission reference curve; the simulation module is used to perform simulation based on the power production timing model, adjust the power station parameters, obtain the final power transmission reference curve that meets the power transmission objective function and the power transmission constraints, and use the adjusted power station parameters as the reference parameters for power station construction.

[0015] Optionally, the determination module is specifically used to: obtain at least one full-year benchmark output series data of clean energy in the sending provinces of the Shagohuang area, the benchmark output series data being data of a preset time scale; determining the full-year output of at least one clean energy with the highest probability in a full year as the typical benchmark output of clean energy; based on the typical benchmark output of clean energy, calculating the cumulative power output of clean energy in each month on a monthly scale, and performing cumulative power frequency arrangement; taking the output of one day in each month whose cumulative power frequency arrangement meets the preset probability as the representative output of each month, and obtaining 12 representative outputs; determining the 12 representative outputs as the reference output of clean energy.

[0016] Optionally, the determination module is specifically used to: obtain the original load curve and the residual load curve of the receiving end; and determine the duration intervals of the noon peak, evening peak and other time periods of the receiving end based on the original load curve and the residual load curve.

[0017] Optionally, the generation module is specifically used to: generate an initial power transmission reference curve according to the clean energy reference output, the power consumption pattern of the receiving end and the power station parameters; based on the initial power transmission reference curve, determine whether the power transmission situation of the clean energy multi-energy complementary system under the initialized power station parameters meets the preset power transmission rules, and the clean energy multi-energy complementary system includes a target power station; if the preset power transmission rules are not met, the power transmission capacity of the initial power transmission reference curve is adjusted based on the power consumption pattern of the receiving end to obtain an adjusted power transmission reference curve, and based on the adjusted power transmission reference curve, re-judge whether the power transmission situation of the clean energy multi-energy complementary system meets the preset power transmission rules; if the preset power transmission rules are not met, the adjusted power transmission reference curve is continued to be adjusted based on the power consumption pattern of the receiving end; if the preset power transmission rules are met, the adjusted power transmission reference curve is determined as the target power transmission reference curve; wherein the preset power transmission rules are: the second percentage of the energy storage capacity of the energy storage power station during the lunch peak is used for power generation of the energy storage power station during the evening peak, and the lunch peak power transmission capacity is greater than the evening peak power transmission capacity.

[0018] Optionally, the generation module is specifically used to: if the second percentage of the energy storage capacity of the energy storage power station during the lunch peak does not meet the power generation of the energy storage power station during the evening peak, then reduce the power transmission capacity during the lunch peak; if after reducing the power transmission capacity during the lunch peak, the preset power transmission rules are not met, then continue to reduce the power transmission capacity during the evening peak or other time periods.

[0019] Optionally, the power transmission objective function includes a first objective function and a second objective function; the first objective function is to generate the net present value of clean energy in the sending province of the Shagohuang area based on the electricity sales price, the grid-connected electricity and the total project cost of the target power station in the sending province of the Shagohuang area; the second objective function is the peak period guarantee rate of the receiving end; wherein the total project cost includes: initial investment cost, project cycle replacement cost, operation and maintenance cost and electricity purchase cost; the clean energy power station includes at least one of the following: wind farm power station, photovoltaic power station; the energy storage power station includes at least one of the following: pumped storage power station, electrochemical energy storage power station; the constraint conditions include at least one of the following: system constraints of the clean energy multi-energy complementary system in the sending province of the Shagohuang area, clean energy power supply constraints, pumped storage power station constraints, electrochemical energy storage power station constraints, power abandonment rate constraints, power transmission capacity constraints, channel utilization hour constraints and power shortage rate constraints.

[0020] Optionally, a simulation module is used to perform simulation based on a first power production timing model. If the power transmission objective function and the power transmission constraints are not met, the first power station parameters are adjusted to the second power station parameters; a second power production timing model generated based on the second power station parameters is simulated to determine whether the power transmission objective function and the power transmission constraints are met. If the objective function and the power transmission constraints are met, the second power station parameters are used as reference parameters for power station construction, and the second power transmission reference curve generated based on the second power station parameters is determined as the final power transmission reference curve; wherein the target power transmission reference curve corresponding to the first power station parameters is the first power transmission reference curve, and the target power transmission reference curve corresponding to the second power station parameters is the second power transmission reference curve.

[0021] According to a third aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method for planning a clean energy power transmission system based on the Shagohuang area as described in the first aspect is implemented.

[0022] According to the fourth aspect of an embodiment of the present disclosure, a computer device, a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor are provided, wherein the computer-readable instructions, when executed by the processor, implement the method for planning a clean energy power transmission system based on the Shagohuang area as described in the first aspect.

[0023] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects: In the disclosed embodiment, a planning design of a large new energy base in the Shagohuang area is provided, which takes into account the consumption of new energy, comprehensive benefits and power supply, and comprehensively considers the impact of the lack of conventional regulated power supply support at the sending end, the residual load of the receiving end power grid, and the demand for power supply. Based on the clean energy reference output of the sending end provinces in the Shagohuang area and the power consumption law of the receiving end, the reference parameters for the construction of power stations and the final power transmission reference curve of the sending end provinces in the Shagohuang area can be planned. Facing the future green, low-carbon, circular economic system and clean, low-carbon, safe and efficient energy system, a reliable power trading strategy can be provided for the export of clean energy in the Shagohuang area, and a technical reference can be provided for the safety, stability and reliability of the future ultra-high voltage direct current transmission system based on clean energy. Specifically, based on the power transmission reference curve, the output of the wind farm can be redundant during the low load period, and the pumped storage power station can purchase electricity from the wind power and the power grid to reduce the cost of purchasing electricity; during the peak load period, the output of the photovoltaic power station is high and the output of the wind power is low, and the pumped storage power station can purchase electricity from the photovoltaic power station and the power grid. When a pumped-storage power station is pumping or an electrochemical energy storage station is storing energy, the frequency regulation benefits are higher in some overlapping periods. The energy storage duration can be appropriately increased, and the capacity ratio participating in the energy market can be reduced, thereby obtaining higher ancillary service benefits. When a pumped-storage power station or an electrochemical energy storage power station is in the power generation state, during periods when the market electricity price is high, the power station units will allocate capacity in a biased manner towards the energy market, thereby obtaining higher electricity benefits.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0026] Figure 1 A schematic diagram of an electric power system architecture based on clean energy in the Shagohuang area is provided for an embodiment of the present disclosure.

[0027] Figure 2 A flowchart of a method for planning a clean energy power transmission system based on the Shagohuang area is provided in an embodiment of the present disclosure.

[0028] Figure 3 A schematic diagram of a power transmission reference curve without power shortage provided in an embodiment of the present disclosure.

[0029] Figure 4 A schematic diagram of a power transmission reference curve in which a power shortage situation exists is provided in an embodiment of the present disclosure.

[0030] Figure 5A flow chart of a clean energy power transmission system planning based on the Shagohuang area is provided in accordance with an embodiment of the present disclosure.

[0031] Figure 6 A hardware structure diagram of a computer device in which an apparatus for planning a clean energy power transmission system based on the Shagohuang area is located is provided in an embodiment of the present disclosure.

[0032] Figure 7 A schematic diagram of the structure of a device for planning a clean energy power transmission system based on the Shagohuang area provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] 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 disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0034] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. 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.

[0035] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such 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 disclosure, 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".

[0036] Next, the embodiments of the present disclosure are described in detail.

[0037] Figure 1 FIG. 1 is a schematic diagram of a clean energy power system architecture to which the present disclosure embodiment can be applied. Figure 1As shown, the clean energy power system architecture 100 may include a power supply system 1001, an energy storage system 1002 and a receiving end 1003; wherein the power supply system 1001 includes: a wind power station, a photovoltaic power station, a pumped storage power station and an electrochemical energy storage power station. The energy storage system 1002 includes: a pumped storage power station and an electrochemical energy storage power station. Among them, the wind power station uses wind power generation, the photovoltaic power station uses photovoltaic panels to convert solar energy into electrical energy, the pumped storage power station is used to convert electrical energy into potential energy, or convert potential energy into electrical energy, and the electrochemical energy storage power station is used to store and release electrical energy using electrochemical reactions.

[0038] The method provided in the embodiment of the present disclosure may be executed by a terminal device, and accordingly, the device may be set in the terminal device. However, it is easy for a person skilled in the art to understand that the method provided in the embodiment of the present disclosure may also be executed by a server, and accordingly, the device may also be set in the server, which is not particularly limited in this exemplary embodiment.

[0039] Figure 2 A schematic diagram of a method flow chart for planning a clean energy power transmission system based on a desert region provided by an embodiment of the present disclosure is shown in FIG. Figure 2 The following S201 to S205 are shown: S201. Determine the clean energy reference output and electricity consumption patterns of the sending provinces in the Shagohuang area.

[0040] For example, in the embodiments of the present disclosure, the clean energy may be wind, light, etc. In practical applications, other energy sources that have little impact on the environment and produce almost no pollution may also be included.

[0041] Exemplarily, the output of the first type of clean energy in the first region can indicate the pattern of using the first type of clean energy to generate energy in the first region. Taking wind farms as an example, the wind force and duration are different in different seasons, and the wind force and duration are different at different times of the day, and thus the power generated by wind power is also different.

[0042] In the embodiment of the present disclosure, the power consumption pattern of the receiving end may indicate the regularity exhibited in the power consumption process, for example, may include the peak power consumption period and non-peak power consumption period of the receiving end.

[0043] S202, initializing the power station parameters of the target power station in the sending province of the Shagohuang area.

[0044] Among them, the target power stations include clean energy power stations and energy storage power stations in the Shagohuang area; the clean energy power stations include at least one of the following categories: wind power stations and photovoltaic power stations; the energy storage power stations include at least one of the following categories: pumped storage power stations and electrochemical energy storage power stations.

[0045] In the embodiment of the present disclosure, the power station parameters of the target power station include the installed capacity of the power station, and the power station parameters of the energy storage power station also include the energy storage time and power generation time of the energy storage power station.

[0046] S203: Generate a target power transmission reference curve according to the clean energy reference output, the power consumption pattern of the receiving end, the power station parameters and the preset power transmission rules.

[0047] S204: construct a power production time series model based on the power station parameters corresponding to the target power transmission reference curve and the preset power transmission rules.

[0048] S205. Perform simulation based on the power production time series model, adjust the power station parameters, obtain the final power transmission reference curve that meets the power transmission objective function and power transmission constraints, and use the adjusted power station parameters as reference parameters for power station construction.

[0049] Among them, the area between the power transmission capacity equal to 0 and the final power transmission reference curve is recorded as the L zone, the area between the final power transmission reference curve and the maximum power transmission capacity of the channel is recorded as the S zone, and the area with power shortage in the L zone is recorded as the P zone. Specifically, the L zone represents the power transmission level that takes into account the resources at the sending end and the power consumption characteristics of the receiving end, that is, the upper limit of the L zone is the final power transmission reference curve; the S zone indicates that the wind and solar power generation that cannot be stored by the pumped storage power station below the maximum power transmission capacity of the channel above the power transmission reference curve can be used, such as as an emergency power supply, and conduct spot transactions with the power demander. The P zone indicates that power shortages may still exist when the overall power transmission target is met.

[0050] Figure 3 A schematic diagram of a power transmission reference curve provided by an embodiment of the present disclosure, in which there is no power shortage. Figure 3 The maximum transmission capacity of the channel is 8 million kilowatts (kW), and there is no P zone in the area divided based on the power transmission reference curve. The power transmission reference curve includes the output of wind power stations and photovoltaic power stations in various periods, the energy storage of pumped storage power stations and electrochemical energy storage power stations in various periods, and the power abandonment periods of wind farms and photovoltaic power stations. Figure 3It can be seen that between 1:00 and 10:00, the power transmission reference curve is flat. Among them, wind power generation between 1:00 and 7:00 basically meets the load demand of the clean energy multi-energy complementary system, and the excess wind energy is stored by pumped storage; between 8:00 and 10:00, the excess wind and solar power generation can be stored by pumped storage. Between 11:00 and 18:00, wind and solar power are generated, and the amount of electricity generated by clean energy is large. The pumped storage power station can store a lot of energy. If it exceeds the storage capacity of the pumped storage power station, it will be abandoned. Between 21:00 and 24:00, the photovoltaic output is basically 0, and the pumped storage power station uses the stored energy to generate electricity. Wind power and energy storage power generation jointly output to meet the load demand of the receiving end. At this time, below the power transmission reference curve, that is, the power generation in the L area indicates that the power consumption of the receiving end can be guaranteed; the area where the power output is greater than the transmission capacity and less than the maximum transmission capacity of the channel is the S area, which means that the power consumption of the receiving end can be met and can be used for spot trading; the P area indicates that the power consumption of the receiving end cannot be met. In this case, there is no P region.

[0051] It should be noted that the figure only uses one L zone, S zone and P zone as an example. In actual applications, there may be multiple discontinuous S zones, and there may or may not be a P zone.

[0052] Figure 4 A schematic diagram of a power transmission reference curve provided by an embodiment of the present disclosure in which a power shortage occurs. Figure 4 There is a P zone in the . Exemplarily, for the L zone, the power generation below the power transmission reference curve, that is, the power consumption of the receiving end can be guaranteed; the clean energy multi-energy complementary system can sign medium- and long-term transactions with the receiving end user; the area where the power output is greater than the transmission capacity and less than the maximum transmission capacity of the channel is the S zone, which means that the power consumption of the receiving end is more than that of the receiving end, and the clean energy multi-energy complementary system can conduct spot transactions with the receiving end; for the P zone, it means that the power consumption of the receiving end cannot be met, and the clean energy multi-energy complementary system can calculate the power shortage and purchase electricity.

[0053] The disclosed embodiment provides a method for planning a clean energy power transmission system based on the Shagohuang area, proposes a planning and design method for a large new energy base that takes into account new energy consumption, comprehensive benefits, and power supply, and comprehensively considers the impact of the lack of conventional regulated power supply support at the sending end, the residual load of the receiving end power grid, and the demand for power supply. Based on the clean energy reference output of the sending end provinces in the Shagohuang area and the power consumption law of the receiving end, the reference parameters for the construction of power stations and the final power transmission reference curve of the sending end provinces in the Shagohuang area can be planned. Facing the future green, low-carbon, circular economic system and clean, low-carbon, safe and efficient energy system, a reliable power trading strategy can be provided for the delivery of clean energy in the Shagohuang area, providing technical reference for the safety, stability and reliability of the future ultra-high voltage direct current transmission system based on clean energy. Specifically, based on the power transmission reference curve, the wind farm output can be redundant during the low load period, and the pumped storage power station can purchase electricity from wind power and the power grid to reduce the cost of purchasing electricity; during the peak load period, the photovoltaic power station output is high and the wind power output is low, and the pumped storage power station can purchase electricity from the photovoltaic power station and the power grid. When a pumped-storage power station is pumping or an electrochemical energy storage station is storing energy, the frequency regulation benefits are higher in some overlapping periods. The energy storage duration can be appropriately increased, and the capacity ratio participating in the energy market can be reduced, thereby obtaining higher ancillary service benefits. When a pumped-storage power station or an electrochemical energy storage power station is in the power generation state, during periods when the market electricity price is high, the power station units will allocate capacity in a biased manner towards the energy market, thereby obtaining higher electricity benefits.

[0054] Optionally, in the method for planning a clean energy power transmission system based on the Shagohuang area provided in an embodiment of the present invention, the power transmission objective function includes a first objective function and a second objective function; the first objective function is a net present value objective function of clean energy in the sending province of the Shagohuang area generated based on the electricity sales price, the grid-connected electricity volume and the total project cost of the target power station in the sending province of the Shagohuang area; wherein the total project cost includes: initial investment cost, project cycle replacement cost, operation and maintenance cost and electricity purchase cost; the second objective function is to maximize the guarantee rate during the peak period of the receiving end; the clean energy power station includes at least one of the following: a wind farm power station and a photovoltaic power station; the energy storage power station includes at least one of the following: a pumped storage power station and an electrochemical energy storage power station.

[0055] The first objective function is the power transmission objective function of the outer model. It can be expressed by formula (1): ; Formula (1) in, M represents the maximum net present value, represents the net present value, Indicates the electricity price. represents the grid-connected electricity, and C represents the total project cost The total project cost includes the initial investment cost of each project entity , Project life cycle replacement cost , Operation and maintenance costs and electricity purchase costs .

[0056] Specifically, the maximum net present value can be determined as the objective function based on various costs of the project, electricity sales price, grid-connected electricity, etc.

[0057] It should be noted that the second objective function is the objective function of the inner model, that is, the first objective function is satisfied only when the second objective function is satisfied. The second objective function is used to optimize the transmission curve of the clean energy multi-energy complementary system. The second objective function can give full play to the supporting role of DC power and maximize the guarantee rate during the peak period of the receiving end. Exemplarily, the second objective function can be expressed by the following formula (2).

[0058] ; Formula (2) in, is the peak period guaranteed rate, is the number of times the peak power transmission capacity of the receiving province is not met within the period, and j represents the duration of the peak in the receiving province.

[0059] For example, if the peak duration is 4 hours, then j = 4, and if the peak duration is 3 hours, then j = 3. The above cycle is 8760 hours, and the sum of the number of times the power generation does not meet the power transmission capacity from 18:00 to 22:00 every day for 365 days is counted.

[0060] Optionally, in the method for planning a clean energy power transmission system based on the Shagohuang area provided in an embodiment of the present disclosure, the power transmission constraints include at least one of the following: system constraints of the clean energy multi-energy complementary system in the sending province of the Shagohuang area, clean energy power supply constraints, pumped storage power station constraints, electrochemical energy storage power station constraints, power abandonment rate constraints, power transmission capacity constraints, channel utilization hour constraints and power shortage rate constraints.

[0061] Exemplarily, assuming that the clean energy multi-energy complementary system includes K wind farms, M photovoltaic power stations, N pumped storage power stations and L electrochemical energy storage power stations, the above power transmission constraint conditions may specifically include at least one of the following 1-1 to 1-8: 1-1. System constraints ; Formula (3) in, w Represents wind power generation, pv Represents photovoltaic power generation, sh Indicates the pumping of water in a pumped storage power station. sp Indicates the power generation of pumped storage power station. ec Indicates the energy storage (charging) of an electrochemical energy storage power station. edIndicates the power generation (discharge) of an electrochemical energy storage power station. c Indicates that the system is out of power. dc Indicates that the system is powered on. , For wind farms exist The power generation output during the period, For photovoltaic power plants exist Power generation output during the time period; Pumped Storage Power Station exist Power generation output during the period, Pumped storage power station exist Pumping output during the period; Represents electrochemical energy storage power station exist The energy storage power of the time period, Represents electrochemical energy storage power station exist The power generated during the period; For clean energy multi-energy complementary system Power shortage during the period, Indicates that the clean energy multi-energy complementary system The power transmission during the period.

[0062] 1-2. Clean energy power supply constraints ; Formula (4) ; Formula (5) For wind farms k exist The upper limit of power generation output during the time period; For photovoltaic power plants m exist The upper limit of power generation output during a period.

[0063] 1-3. Constraints of pumped storage power stations ; Formula (6) in, s represents the output of the pumped storage power station, Pumped Storage Power Station exist Output power during the period, Represents the upper limit of the output power of pumped storage power station n.

[0064] ; Formula (7) in, up represents the upper reservoir of a pumped storage power station, down Represents the lower reservoir of a pumped storage power station. Pumped Storage Power Station exist The storage capacity of the reservoir in the time period, Pumped Storage Power Station exist -1 The storage capacity of the reservoir in the period, Represents the energy conversion efficiency coefficient of the pumped storage power station.

[0065] ; Formula (8) ; Formula (9) in, It indicates the lower limit of the storage capacity of the upper reservoir of the pumped storage power station. It indicates the upper limit of the storage capacity of the reservoir in the pumped storage power station.

[0066] ; Formula (10) in, It indicates the lower limit of the storage capacity of the lower reservoir of the pumped storage power station. Pumped Storage Power Station exist The storage capacity of the reservoir in the period, It indicates the upper limit of storage capacity of the lower reservoir of a pumped-storage power station.

[0067] 1-4. Electrochemical Energy Storage Constraints ; Formula (11) in, Represents electrochemical energy storage power station exist The amount of electricity during the period, lc Represents electrochemical energy storage power station l Energy storage, Electrochemical energy storage power station The energy storage efficiency, ld Represents electrochemical energy storage power station l Power generation, For electrochemical energy storage power station Power generation efficiency; Represents electrochemical energy storage power station exist The power generated during the period.

[0068] ; Formula (12) in, Represents electrochemical energy storage power station exist Time storage, Represents electrochemical energy storage power station exist Power generation during the period.

[0069] ; Formula (13) ; Formula (14) in, Electrochemical energy storage power station exist The maximum energy storage power of the time period, For electrochemical energy storage power station Maximum power generation.

[0070] 1-5. Power abandonment rate constraints ; Formula (15) in, For K wind farms and M photovoltaic power stations in the time period The total power generation, is the total power abandonment of K wind farms and M photovoltaic power stations, The allowable power abandonment rate of the clean energy multi-energy complementary system.

[0071] 1-6. Transmission capacity constraints ; Formula (16) in, d represents the DC channel, Indicates that the DC channel is in the period The transmission capacity, Indicates that the DC channel is in the period The upper limit of power transmission capacity.

[0072] It can be understood that the upper limit of the power transmission capacity is the maximum power transmission capacity of the aforementioned channel, which can generally be 8 million kW or 10 million kW.

[0073] 1-7. Channel Utilization Hours Constraints ; Formula (17) in, Indicates the minimum utilization hours of the DC channel.

[0074] 1-8. Power shortage rate constraints ; Formula (18) in, Indicates the maximum allowable power failure rate.

[0075] Based on this scheme, the power supply parameters and the final power transmission reference curve that meet the inner and outer objective functions and various system constraints can be selected through simulation. This can not only provide accurate power supply parameters for reference for the construction of clean energy multi-energy complementary systems, but also provide efficient, economical power supply strategies that meet the needs of the receiving end based on the power transmission reference curve.

[0076] Optionally, in the method for planning a clean energy power transmission system based on the Shagohuang area provided in the embodiment of the present disclosure, the above S201 may specifically include the following S201a1 to S201a5: S201a1. Obtain at least one full-year benchmark output series data of clean energy in the sending provinces of the Shagohuang area.

[0077] Among them, the benchmark output series data is data of a preset time scale.

[0078] Optionally, the preset duration may be selected according to accuracy requirements, and the embodiment of the present disclosure does not specifically limit the specific value of the preset duration.

[0079] Exemplarily, the preset duration may be 1 hour, 30 minutes or 15 minutes.

[0080] S201a2. Determine the output of at least one clean energy source with the highest probability throughout the year as the typical benchmark output of the clean energy source.

[0081] S201a3. Based on the typical benchmark output of clean energy, calculate the cumulative power output of clean energy in each month on a monthly basis and perform cumulative power frequency adjustment.

[0082] S201a4. The output of a day in which the accumulated electricity frequency of each month meets the preset probability is taken as the representative output of each month, and 12 representative outputs are obtained.

[0083] For example, obtain the benchmark output series data of at least one 8760-hour process (i.e., 365*24 hours in a year) of clean energy in the sending provinces of the Shagohuang area, and determine the output of the 8760-hour process with the highest probability in at least one 8760-hour process of clean energy as the typical benchmark output of clean energy. Based on the typical benchmark output of clean energy, calculate the cumulative power of clean energy output in a month on a monthly scale, and perform cumulative power frequency adjustment. Take the 24-hour process of clean energy benchmark output (i.e., hours in a day) whose cumulative power frequency adjustment meets the preset probability in each month as the representative output of each month, and obtain 12 representative 24-hour processes of typical benchmark output of clean energy.

[0084] It should be noted that the selection of the preset probability can be set according to actual needs, and can include most unfavorable situations, for example, 85%, 90%, 95%. The embodiment of the present disclosure does not specifically limit the specific value of the preset probability.

[0085] For example, a 24-hour process with a cumulative power output frequency of about 90% in January (31 days) is selected as the representative output of the month. Table 1 is a table for determining the representative output of a month provided by an embodiment of the present disclosure. First, the cumulative power of the day is determined by day, where the output of the 24 hours of each day is not shown in Table 1; then, the cumulative power of 31 days is sorted in order from large to small; then, the probability is calculated based on the sorted sequence number / total number of days in the month, and finally it is determined that the probability is close to 90% for ranking 28, and ranking 28 corresponds to the output of the 24-hour process on January 10, and the output of the 24-hour process on January 10 is selected as the representative output of the month.

[0086] Table 1 S201a5. Determine 12 representative outputs as clean energy reference outputs.

[0087] For example, we obtain 8760 hours of benchmark output data of wind power and photovoltaic power, generate the cumulative power frequency of wind and solar power output each month, and select the 24-hour process corresponding to the cumulative power frequency close to 90%. The fast predecessor elimination method based on probability distance obtains the wind and solar power output with the highest probability as a typical representative (i.e., clean energy reference output).

[0088] Based on this scheme, the typical output of clean energy that can represent the sending provinces of the Shagohuang area can be quickly selected based on the benchmark output series data of the sending provinces of the Shagohuang area, so as to accurately determine the scale of the target power station to be built and the power transmission trading strategy based on the typical output of the clean energy.

[0089] Optionally, in the method for planning a clean energy power transmission system based on the Shagohuang area provided in the embodiment of the present disclosure, the above S201 may specifically include the following S201b1 and S201b2: S201b1. Obtain the original load curve and residual load curve of the receiving end.

[0090] Among them, the original load curve refers to the curve of users' electricity demand changing over time in the power system, reflecting the fluctuation of electricity demand; the residual load curve refers to the load curve after deducting clean energy power generation (such as wind power, solar power) and thermal power base load from the total electricity demand.

[0091] S201b2. Determine the duration of the lunch peak, evening peak and other time periods at the receiving end based on the original load curve and the residual load curve.

[0092] Based on this scheme, the electricity consumption pattern of the receiving end can be determined through the historical electricity consumption curve of the receiving end, so that the scale of the target power station to be built and the power transmission transaction strategy generated subsequently can better match the electricity consumption of the receiving end, reduce the probability of failure to meet power transmission, and maximize the benefits of power transmission of the clean energy multi-energy complementary system.

[0093] Optionally, in the method for planning a clean energy power transmission system based on the desert region provided in the embodiment of the present disclosure, the above S203 may specifically include the following S203a1 to S203a5: S203a1. Generate an initial power transmission reference curve according to the clean energy reference output, the power consumption pattern of the receiving end and the power station parameters.

[0094] S203a2: Based on the initial power transmission reference curve, determine whether the power transmission situation of the clean energy multi-energy complementary system under the initialized power station parameters meets the preset power transmission rules.

[0095] Among them, the clean energy multi-energy complementary system includes a target power station; the preset power transmission rule is: the second percentage of energy stored by the energy storage power station during the lunch peak is used for power generation by the energy storage power station during the evening peak and the lunch peak power transmission capacity is greater than the evening peak power transmission capacity.

[0096] Exemplarily, the power station parameters may include the scale of a wind power station, the scale of a photovoltaic power station, the scale of a pumped-storage power station, the scale of an electrochemical energy storage power station, the energy storage time and power generation time of a pumped-storage power station, and the energy storage time and power generation time of an electrochemical energy storage power station.

[0097] S203a3. If the preset power transmission rules are not met, the power transmission capacity of the initial current power transmission reference curve is adjusted based on the power consumption rule of the receiving end to obtain an adjusted power transmission reference curve, and based on the adjusted power transmission reference curve, it is re-determined whether the power transmission situation of the clean energy multi-energy complementary system meets the preset power transmission rules.

[0098] S203a4: If the preset power transmission rule is not met, the adjusted power transmission reference curve continues to be adjusted based on the power consumption rule of the receiving end until the preset power transmission rule is met.

[0099] S203a5: If the preset power transmission rule is met, the adjusted power transmission reference curve is determined as the target power transmission reference curve.

[0100] Based on this scheme, a power transmission reference curve that meets the power consumption of the receiving end can be generated, so that the power supply parameters can be further determined based on the curve to determine whether they meet the power transmission objective function and power transmission constraints, thereby providing a basis for accurately determining the power supply parameters.

[0101] Optionally, in the method for planning a clean energy power transmission system based on the Shagohuang area provided in the embodiment of the present disclosure, the above S203a3 can be specifically performed by the following S203b1 and S203b2: S203b1. If the second percentage of energy stored by the energy storage station during the lunch peak does not satisfy the energy storage station's power generation during the evening peak, the power transmission capacity during the lunch peak is reduced.

[0102] In the embodiment of the present disclosure, the power transmission capacity can be reduced with a preset power transmission capacity step size, for example, the power transmission capacity step size is 100kW, 50kW, etc. The specific step size value can be set according to actual needs, and the embodiment of the present disclosure does not make any specific limitation on this.

[0103] S203b2: If the preset power transmission rules are not met after reducing the power transmission capacity during the lunch peak, the power transmission capacity during the evening peak or the power transmission capacity during other time periods will continue to be reduced.

[0104] For example, taking the second percentage of 75% as an example, if 75% of the afternoon peak energy storage does not meet the evening peak power generation, the afternoon peak power transmission capacity is reduced by 100kW as a step. Re-judge whether 75% of the afternoon peak energy storage meets the evening peak power generation. If 75% of the afternoon peak energy storage still does not meet the evening peak power generation after reducing the afternoon peak power transmission capacity, continue to reduce the power transmission capacity of the evening peak or other time periods by 100kW as a step, and re-judge whether 75% of the afternoon peak energy storage meets the evening peak power generation, until 75% of the afternoon peak energy storage meets the evening peak power generation, and the afternoon peak power transmission capacity is greater than the evening peak power transmission capacity.

[0105] Based on this scheme, it can be determined whether the selected power station parameters and the power transmission capacity in each time period meet the preset power transmission rules. If not, the power transmission capacity in each time period can be adjusted until the preset power transmission rules are met, so that the target power transmission reference curve that meets the power transmission demand and power generation demand can be obtained, and then based on the target power transmission reference curve, a power production timing model can be further generated for simulation.

[0106] Optionally, in the method for planning a clean energy power transmission system based on the Shagohuang area provided in an embodiment of the present disclosure, the above S205 may be performed by the following S205a and S205b: S205a: Perform simulation based on the first power production time series model, and if the power transmission objective function and the power transmission constraint conditions are not met, adjust the first power station parameters to the second power station parameters.

[0107] Among them, if the power station parameter is the first power station parameter, the target power transmission reference curve generated based on the first power station parameter is recorded as the first power transmission reference curve, and the power production timing model generated based on the first power transmission reference curve is recorded as the first power production timing model.

[0108] It can be understood that after adjusting the power station parameters to the second power station parameters, a second power transmission reference curve is generated based on the adjusted second power station parameters, and then a second power production timing model is generated based on the second power transmission reference curve.

[0109] S205b. Perform simulation on the second power production timing model generated based on the second power station parameters to determine whether the power transmission objective function and the power transmission constraints are met. If the objective function and the power transmission constraints are met, the second power station parameters are used as reference parameters for power station construction, and the second power transmission reference curve generated based on the second power station parameters is determined as the final power transmission reference curve.

[0110] The target power transmission reference curve corresponding to the first power station parameter is the first power transmission reference curve, and the target power transmission reference curve corresponding to the second power station parameter is the second power transmission reference curve.

[0111] Based on this scheme, after simulating the power production timing model, if the power transmission objective function and power transmission constraints are not met, the power transmission parameters can be adjusted, the power production timing model can be regenerated and the simulation can be performed again, so as to obtain the final power transmission reference curve and power station parameters that meet the power transmission objective function and power transmission constraints.

[0112] Figure 5 A schematic diagram of a method flow chart for planning a clean energy power transmission system based on a desert region provided by an embodiment of the present disclosure is shown in FIG. Figure 5As shown in , the power station parameters and the power transmission reference curve are first initialized, and based on the power transmission reference curve, it is judged whether 75% of the energy storage during the lunch peak can meet the power generation during the evening peak, and the power transmission capacity during the lunch peak is greater than the power transmission capacity during the evening peak. The power transmission capacity during the lunch peak is first reduced, and then the power transmission capacity during the evening peak and the power transmission capacity during other time periods are cyclically reduced; each time the power transmission capacity is reduced, it is judged whether 75% of the energy storage during the lunch peak can meet the power generation during the evening peak, and the power transmission capacity during the lunch peak is greater than the power transmission capacity during the evening peak; each time the power transmission capacity is reduced, it is judged whether the number of reductions during the lunch peak is greater than a first preset number, wherein the first preset number is the upper limit of the number of times the lunch peak is reduced in the outer layer; the power transmission capacity during the evening peak and the power transmission capacity during other time periods are cyclically reduced in the inner layer, and the energy storage during the lunch peak is still not satisfied Whether 75% of the energy storage during the afternoon peak meets the evening peak power generation and the afternoon peak power transmission capacity is greater than the evening peak power transmission capacity, and whether the number of inner-layer cycles is greater than the second preset number, the second preset number is the number of times the inner layer reduces the evening peak power transmission capacity and the power transmission capacity in other periods; if the number of inner-layer cycles is greater than the second preset number, then enter the outer-layer cycle to reduce the afternoon peak power transmission capacity again, until 75% of the afternoon peak energy storage meets the evening peak power generation, and the afternoon peak power transmission capacity is greater than the evening peak power transmission capacity to obtain the target power transmission reference curve, and then build a power production timing model based on the target power transmission reference curve, and perform simulation. If the power transmission function and power transmission constraints are met, the final power transmission reference curve and the power station parameters corresponding to the final power transmission reference curve are output. If the power transmission function and power transmission constraints are not met, the power station parameters are readjusted, and the power transmission reference curve is initialized for re-judgment.

[0113] Corresponding to the aforementioned method embodiments, the present disclosure also provides embodiments of an apparatus and a computer device to which the apparatus is applied.

[0114] The embodiments of the apparatus disclosed herein can be applied to computer devices, such as servers or terminal devices. The apparatus embodiments can be implemented by software, or by hardware or a combination of software and hardware. Taking software implementation as an example, a device in a logical sense is determined by the processor of the device for planning the clean energy power transmission system based on the Shagohuang area in which it is located reading the corresponding computer program instructions in the non-volatile memory into the memory and running them. From the hardware level, if Figure 6 FIG. 1 is a hardware structure diagram of a computer device where the device of the embodiment of the present disclosure is located, except Figure 6 In addition to the processor 610, memory 630, network interface 620, and non-volatile memory 640 shown, the server or electronic device where the device 631 for planning a clean energy power transmission system based on the Shagohuang area in the embodiment is located may also include other hardware, usually according to the actual function of the computer device, which will not be described in detail.

[0115] like Figure 7 As shown, Figure 7 A schematic diagram of the structure of a device for planning a clean energy power transmission system based on a Shagohuang area provided in an embodiment of the present disclosure, the device 700 for planning a clean energy power transmission system based on a Shagohuang area includes: a determination module 701, an initialization module 702, a generation module 703, a construction module 704 and a simulation module 705; the determination module is used to determine the clean energy reference output and the power consumption law of the receiving end of the sending province in the Shagohuang area; the initialization module is used to initialize the power station parameters of the target power station in the sending province of the Shagohuang area, and the target power station includes a clean energy power generation power station and an energy storage power station in the Shagohuang area; the generation module is used to generate a target power transmission reference curve according to the clean energy reference output, the power consumption law of the receiving end, the power station parameters and the preset power transmission rules; the construction module is used to construct a power production timing model based on the power station parameters and the preset power transmission rules corresponding to the target power transmission reference curve; the simulation module is used to perform simulation based on the power production timing model, adjust the power station parameters, obtain the final power transmission reference curve that meets the power transmission objective function and the power transmission constraints, and use the adjusted power station parameters as the reference parameters for power station construction.

[0116] Optionally, the determination module is specifically used to: obtain at least one full-year benchmark output series data of clean energy in the sending province of the Shagohuang area, the benchmark output series data being data of a preset time scale; determining the full-year output of at least one clean energy with the highest probability in a full year as the typical benchmark output of clean energy; based on the typical benchmark output of clean energy, calculating the cumulative power output of clean energy in each month on a monthly scale, and performing cumulative power frequency arrangement; taking the output of one day in each month whose cumulative power frequency arrangement meets the preset probability as the representative output of each month, and obtaining 12 representative outputs; determining the 12 representative outputs as the reference output of clean energy.

[0117] Optionally, the determination module is specifically used to: obtain the original load curve and the residual load curve of the receiving end; and determine the duration intervals of the noon peak, evening peak and other time periods of the receiving end based on the original load curve and the residual load curve.

[0118] Optionally, the generation module is specifically used to: generate an initial power transmission reference curve according to the clean energy reference output; based on the initial power transmission reference curve, the power consumption pattern of the receiving end and the power station parameters, determine whether the power transmission situation of the clean energy multi-energy complementary system under the initialized power station parameters meets the preset power transmission rules, and the clean energy multi-energy complementary system includes a target power station; if the preset power transmission rules are not met, the power transmission capacity of the initial power transmission reference curve is adjusted based on the power consumption pattern of the receiving end to obtain an adjusted power transmission reference curve, and re-judge whether the power transmission situation of the clean energy multi-energy complementary system meets the preset power transmission rules; if the preset power transmission rules are not met, the adjusted power transmission reference curve is continued to be adjusted based on the power consumption pattern of the receiving end until the preset power transmission rules are met; if the preset power transmission rules are met, the adjusted power transmission reference curve is determined as the target power transmission reference curve; wherein the preset power transmission rules are: the second percentage of the energy stored by the energy storage power station during the lunch peak is used for power generation by the energy storage power station during the evening peak and the lunch peak power transmission capacity is greater than the evening peak power transmission capacity.

[0119] Optionally, the generation module is specifically used to: if the second percentage of energy storage of the energy storage power station during the lunch peak does not satisfy the power generation of the energy storage power station during the evening peak, then reduce the lunch peak power transmission capacity; if after reducing the lunch peak power transmission capacity, the preset power transmission rules are not met, then reduce the lunch peak power transmission capacity; if after reducing the lunch peak power transmission capacity, the preset power transmission rules are not met, then continue to reduce the power transmission capacity during the evening peak or other time periods.

[0120] Optionally, the power transmission objective function includes a first objective function and a second objective function; the first objective function is to maximize the net present value of clean energy in the sending provinces of the Shagohuang area, wherein the net present value is determined based on the electricity sales price, the grid-connected electricity volume and the total project cost of the target power station in the sending provinces of the Shagohuang area; the second objective function is to maximize the guarantee rate during the peak period of the receiving end; wherein the total project cost includes: initial investment cost, project cycle replacement cost, operation and maintenance cost and electricity purchase cost; the clean energy power station includes at least one of the following: a wind farm power station, a photovoltaic power station; the energy storage power station includes at least one of the following: a pumped-storage power station, an electrochemical energy storage power station; the constraints include at least one of the following: system constraints of the clean energy multi-energy complementary system in the sending provinces of the Shagohuang area, clean energy power supply constraints, pumped-storage power station constraints, electrochemical energy storage power station constraints, power abandonment rate constraints, power transmission capacity constraints, channel utilization hour constraints and power shortage rate constraints.

[0121] Optionally, the simulation module is specifically used to: perform simulation based on a first power production timing model, and if the power transmission objective function and the power transmission constraints are not met, adjust the first power station parameters to the second power station parameters; perform simulation based on a second power production timing model generated by the second power station parameters to determine whether the power transmission objective function and the power transmission constraints are met, and if the objective function and the power transmission constraints are met, use the second power station parameters as reference parameters for power station construction, and determine the second power transmission reference curve generated based on the second power station parameters as the final power transmission reference curve; wherein, the target power transmission reference curve corresponding to the first power station parameters is the first power transmission reference curve, and the target power transmission reference curve corresponding to the second power station parameters is the second power transmission reference curve.

[0122] The device for planning the clean energy power transmission system based on the Shagohuang area provided by the embodiment of the present disclosure provides a planning design for a large new energy base that takes into account the consumption of new energy, comprehensive benefits and power supply, and comprehensively considers the impact of the lack of conventional regulated power supply support at the sending end, the residual load of the receiving end power grid, and the demand for power supply. Based on the clean energy reference output of the sending end province in the Shagohuang area and the power consumption law of the receiving end, the reference parameters for the construction of power stations and the final power transmission reference curve of the sending end province in the Shagohuang area can be planned. Facing the future green, low-carbon, circular economic system and clean, low-carbon, safe and efficient energy system, the clean energy transmission in the Shagohuang area can improve the reliable power trading strategy, and provide technical reference for the safety, stability and reliability of the future ultra-high voltage direct current transmission system based on clean energy. Specifically, based on the power transmission reference curve, the wind farm output can be redundant during the low load period, and the pumped storage power station can purchase electricity from wind power and the power grid to reduce the cost of purchasing electricity; during the peak load period, the photovoltaic power station output is high and the wind power output is low, and the pumped storage power station can purchase electricity from the photovoltaic power station and the power grid. When a pumped-storage power station is pumping or an electrochemical energy storage station is storing energy, the frequency regulation benefits are higher in some overlapping periods. The energy storage duration can be appropriately increased, and the capacity ratio participating in the energy market can be reduced, thereby obtaining higher ancillary service benefits. When a pumped-storage power station or an electrochemical energy storage power station is in the power generation state, during periods when the market electricity price is high, the power station units will allocate capacity in a biased manner towards the energy market, thereby obtaining higher electricity benefits.

[0123] Correspondingly, the present disclosure also provides a device for planning a clean energy power transmission system based on the Shagohuang area, and the device for planning a clean energy power transmission system based on the Shagohuang area includes a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to: determine the clean energy reference output and the power consumption pattern of the receiving end of the sending province in the Shagohuang area; initialize the power station parameters of the target power station in the sending province in the Shagohuang area; generate a target power transmission reference curve based on the clean energy reference output, the power consumption pattern of the receiving end, the power station parameters and the preset power transmission rules; construct a power production timing model based on the power station parameters and the preset power transmission rules corresponding to the target power transmission reference curve; perform simulation based on the power production timing model, adjust the power station parameters, obtain the final power transmission reference curve that meets the power transmission objective function and the power transmission constraints, and use the adjusted power station parameters as reference parameters for power station construction.

[0124] The present disclosure also provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the various steps in the above method embodiment are implemented.

[0125] The present disclosure also provides a computer device, which includes a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor, wherein the computer-readable instructions implement the various steps in the above-mentioned method embodiment when executed by the processor.

[0126] The implementation process of the functions and effects of each module in the above-mentioned device is specifically described in the implementation process of the corresponding steps in the above-mentioned method, which will not be repeated here.

[0127] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can refer to the partial description of the method embodiment. The device embodiment described above is only schematic, wherein the modules determined as separated components may or may not be physically separated, and the components determined as module displays may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the disclosed scheme. A person of ordinary skill in the art can understand and implement it without paying creative labor.

[0128] The above describes specific embodiments of the present disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0129] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the inventions claimed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not claimed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0130] It should be understood that the present disclosure is not limited to the exact structures that have 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 disclosure is limited only by the appended claims.

[0131] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A method for planning a clean energy power transmission system in a desert area, characterized in that: The method comprises: Determine the clean energy reference output and electricity consumption patterns of the sending provinces and receiving provinces in the Shagohuang area; Initialize the power plant parameters of the target power plant in the sending province of the Shagohuang area, the target power plant includes a clean energy power generation power plant and an energy storage power plant in the Shagohuang area; Generate a target power transmission reference curve according to the clean energy reference output, the power consumption rule of the receiving end, the power station parameters and the preset power transmission rules; constructing a power production time series model based on the power station parameters corresponding to the target power transmission reference curve and the preset power transmission rules; A simulation is performed based on the power production timing model, the power station parameters are adjusted, a final power transmission reference curve that satisfies the power transmission objective function and power transmission constraints is obtained, and the adjusted power station parameters are used as reference parameters for power station construction.

2. The method according to claim 1, characterized in that The clean energy reference output of the sending provinces in the Shagohuang area is determined as follows: Obtain at least one full-year benchmark output series data of clean energy in the sending province of the Shagohuang area, wherein the benchmark output series data is data of a preset time scale; Determine the output of at least one full year of clean energy with the highest probability as the typical benchmark output of clean energy; Based on the typical benchmark output of clean energy, the cumulative output of clean energy in each month is calculated on a monthly basis, and the cumulative output is frequency-regulated; The output of a day when the accumulated power frequency of each month meets the preset probability is taken as the representative output of each month, and 12 representative outputs are obtained; The 12 representative outputs are determined as clean energy reference outputs.

3. The method according to claim 1 or 2, characterized in that: Determine the power usage pattern of the receiving end, including: Obtain the original load curve and residual load curve of the receiving end; The duration intervals of the noon peak, evening peak and other time periods of the receiving end are determined according to the original load curve and the residual load curve.

4. The method according to claim 3, characterized in that The generating of a target power transmission reference curve according to the clean energy reference output, the power consumption rule of the receiving end, the power station parameters and the preset power transmission rule includes: generating an initial power transmission reference curve according to the clean energy reference output, the power consumption pattern of the receiving end and the power station parameters; Based on the initial power transmission reference curve, determining whether the power transmission situation of the clean energy multi-energy complementary system under the initialized power station parameters meets the preset power transmission rules, the clean energy multi-energy complementary system including the target power station; If the preset power transmission rule is not met, the power transmission capacity of the initial power transmission reference curve is adjusted based on the power consumption rule of the receiving end to obtain an adjusted power transmission reference curve, and based on the adjusted power transmission reference curve, it is re-determined whether the power transmission situation of the clean energy multi-energy complementary system meets the preset power transmission rule; If the preset power transmission rule is not met, the adjusted power transmission reference curve is continuously adjusted based on the power consumption rule of the receiving end until the preset power transmission rule is met; If the preset power transmission rule is satisfied, determining the adjusted power transmission reference curve as the target power transmission reference curve; The preset power transmission rule is as follows: a second percentage of the energy storage capacity of the energy storage station during the afternoon peak is used for power generation during the evening peak and the power transmission capacity during the afternoon peak is greater than the power transmission capacity during the evening peak.

5. The method according to claim 4, characterized in that The method of adjusting the transmission capacity of the initial power transmission reference curve based on the power consumption rule of the receiving end to obtain the adjusted power transmission reference curve includes: If the second percentage of the energy storage power station's stored energy during the afternoon peak does not satisfy the energy storage power station's power generation during the evening peak, reducing the afternoon peak power transmission capacity; If the preset power transmission rule is not satisfied after reducing the power transmission capacity during the afternoon peak, the power transmission capacity during the evening peak or other time periods will continue to be reduced.

6. The method according to claim 1, characterized in that The power transmission objective function includes a first objective function and a second objective function; the first objective function is to maximize the net present value of clean energy in the sending province of the Shagohuang area, wherein the net present value is determined based on the electricity sales price, the grid-connected electricity volume and the total project cost of the target power station in the sending province of the Shagohuang area; the second objective function is to maximize the peak period guarantee rate of the receiving end; The total project cost includes: initial investment cost, project cycle replacement cost, operation and maintenance cost and electricity purchase cost; the clean energy power station includes at least one of the following: wind farm power station, photovoltaic power station; the energy storage power station includes at least one of the following: pumped storage power station, electrochemical energy storage power station; The constraints include at least one of the following: system constraints of the clean energy multi-energy complementary system in the sending provinces of the Shagohuang area, clean energy power supply constraints, pumped storage power station constraints, electrochemical energy storage power station constraints, power abandonment rate constraints, power transmission capacity constraints, channel utilization hour constraints and power shortage rate constraints.

7. The method according to claim 1, characterized in that The simulation is performed based on the power production time series model, the power station parameters are adjusted, a final power transmission reference curve that satisfies the power transmission objective function and power transmission constraint conditions is obtained, and the adjusted power station parameters are used as reference parameters for power station construction, including: Performing simulation based on the first power production time series model, if the power transmission objective function and the power transmission constraint condition are not satisfied, adjusting the first power station parameters to the second power station parameters; performing a simulation on a second power production time series model generated based on the second power station parameters to determine whether a power transmission objective function and the power transmission constraint condition are satisfied; if the objective function and the power transmission constraint condition are satisfied, using the second power station parameters as reference parameters for power station construction, and determining a second power transmission reference curve generated based on the second power station parameters as a final power transmission reference curve; The target power transmission reference curve corresponding to the first power station parameter is the first power transmission reference curve, and the target power transmission reference curve corresponding to the second power station parameter is the second power transmission reference curve.

8. A device for planning a clean energy power transmission system based on the desert area, characterized in that: The device for planning a clean energy power transmission system based on the Shagohuang area includes: a determination module, an initialization module, a generation module, a construction module and a simulation module; The determination module is used to determine the clean energy reference output and the electricity consumption pattern of the receiving end provinces in the Shagohuang area; The initialization module is used to initialize the power station parameters of the target power station in the sending province of the Shagohuang area, and the target power station includes the clean energy power generation power station and energy storage power station in the Shagohuang area; The generating module is used to generate a target power transmission reference curve according to the clean energy reference output, the power consumption rule of the receiving end, the power station parameters and the preset power transmission rules; The construction module is used to construct a power production time series model based on the power station parameters corresponding to the target power transmission reference curve and the preset power transmission rule; The simulation module is used to perform simulation based on the power production timing model, adjust the power station parameters, obtain the final power transmission reference curve that meets the power transmission objective function and power transmission constraints, and use the adjusted power station parameters as reference parameters for power station construction.

9. A computer device, characterized in that: It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method for planning a clean energy power transmission system based on the Shagohuang area as described in any one of claims 1 to 7 are implemented.

10. A readable storage medium, characterized in that: The readable storage medium stores programs or instructions, and when the programs or instructions are executed by the processor, the steps of the method for planning a clean energy power transmission system based on the Shagohuang area as described in any one of claims 1 to 7 are implemented.

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