A method and system for calculating the scale of new energy development with multi-dimensional constraints at the new energy sending end

Through the multi-dimensional constraint new energy development scale calculation method, comprehensively considering resource, peak shaving, safety and economic constraints, the problem of reasonable determination of the scale of new energy development in the new power system is solved, and the level of new energy acceptance and balance and safety of the power system are improved.

CN115000938BActive Publication Date: 2025-04-04NORTHWEST BRANCH OF STATE GRID POWER GRID CO +1
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Patent Information

Application Number
CN202210611991.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-05-31
Publication Date
2025-04-04
Estimated Expiration
2042-05-31

AI Technical Summary

Technical Problem

How to reasonably determine the scale of new energy development in a new power system, ensure the balance and safety of the power system, and avoid high proportion of power abandonment caused by the mismatch between the scale of new energy construction and the consumption capacity.

Method used

The multi-dimensional constraint new energy development scale calculation method is adopted, and the resource endowment constraints, peak shaving capacity constraints, safety and stability constraints and economic constraints are comprehensively considered. The power system power waste rate is used as an indicator to reduce conventional thermal power startup and improve the new energy consumption capacity, thereby calculating a reasonable scale of new energy development.

Benefits of technology

It effectively improves the level of new energy acceptance, avoids large-scale power abandonment in new energy, takes into account both economic and policy requirements, and ensures the balance and safety of the power system.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention proposes a method and system for multi-dimensional constraints on the development scale of new energy at the new energy sending end. It includes: determining the load, power source and grid of the planning level year as the boundary conditions of the entire calculation; taking resource endowment constraints, peak load capacity constraints, safety and stability constraints, and economic constraints as different constraints, taking the power system new energy abandonment rate as an indicator, and taking reducing the start-up of conventional thermal power and improving the new energy consumption capacity as the goal, considering the balance problem under the complementary operation of various power sources under multiple time scales; starting from the sustainable development of various power sources, calculating the new energy development scale considering different constraints under the boundary conditions of the same planning level year; taking the smaller scale of new energy development considering different constraints obtained in the four cases, and analyzing whether the supporting policies are met, adjusting the boundary conditions, and obtaining the new energy development scale with new energy as the main body under a certain planning level year.
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Description

Technical Field

[0001] The present invention relates to the field of power system planning, and in particular to a method and system for multi-dimensionally constraining the development scale of new energy at the new energy sending end. Background Art

[0002] With the new requirements for the construction of a new power system with new energy as the main body, the new energy industry will usher in a new round of rapid development. Due to the uneven distribution of new energy, in addition to offshore wind power and distributed new energy, large-scale centralized development of new energy is required, and then it is transmitted to the load center in the central and eastern regions through ultra-high voltage and large capacity over long distances. The intensive development and centralized transmission of new energy is one of the main measures for my country to build a new power system with new energy as the main body.

[0003] The future new power system, due to the strong randomness and volatility of new energy, has put forward higher requirements for the balance and safety of the power system. How to reasonably find the "ceiling" of new energy acceptance in a power system requires us to consider the different factors that restrict the development of new energy, analyze them in detail by category, and calculate the scale of new energy planning under different restrictive factors. At the same time, the scale of new energy planning should meet the construction requirements of a new power system with new energy as the main body.

[0004] In order to avoid the situation where a high proportion of power curtailment is caused by a mismatch between the scale of new energy construction and its absorption capacity, it is necessary to scientifically assess the new energy absorption capacity from the planning stage, formulate reasonable planning goals, and guide the high-quality development of new energy.

[0005] Based on massive data, a new energy development planning method is proposed that comprehensively considers four dimensional factors: resource constraints, peak-shaving capacity constraints, comprehensive economic constraints of power sources, and power grid security and stability constraints. The reasonable scale and layout of new energy zoning development in the regional sending-end power system is calculated, and a new energy development map is drawn. Summary of the invention

[0006] The present invention belongs to the field of new energy planning of electric power system, and particularly relates to a method for calculating the scale of new energy development with multi-dimensional constraints at the new energy sending end. The method is applied to the calculation of the upper limit of the scale of new energy development under the background of a new electric power system with new energy as the main body, considering a high proportion of new energy sending-end power grid under a certain planning level year.

[0007] The purpose of the present invention is to provide a method for calculating the scale of new energy development with multi-dimensional constraints at the new energy sending end, which can find out the reasonable upper limit of the scale of new energy development in a regional power grid in a planned horizontal year.

[0008] In order to achieve the above object, the present invention adopts the following technical solution:

[0009] A method for calculating the scale of new energy development with multi-dimensional constraints at the new energy sending end includes the following steps:

[0010] Determine the load, power supply and grid structure of the planned horizontal year as the boundary conditions of the entire calculation;

[0011] The resource endowment constraint, peak load capacity constraint, safety and stability constraint, and economic constraint are respectively used as different constraint conditions, and the power system new energy abandonment rate is used as an indicator. The goal is to reduce the start-up of conventional thermal power and improve the new energy consumption capacity. The balance problem under the complementary operation of various power sources at multiple time scales is considered; starting from the sustainable development of various power sources, the scale of new energy development considering different constraint factors is calculated under the boundary conditions of the same planning level year;

[0012] The scale of new energy development considering different constraints under the four conditions of resource endowment constraint, peak-shaving capacity constraint, safety and stability constraint, and economic constraint is reduced, and whether the supporting policies are met is analyzed and the boundary conditions are adjusted to obtain the scale of new energy development with new energy as the main body under a certain planning level year.

[0013] As a further improvement of the present invention, resource endowment constraints, peak load capacity constraints, safety and stability constraints, and economic constraints are respectively used as different constraints, the power system new energy abandonment rate is used as an indicator, and the reduction of conventional thermal power startup and the improvement of new energy consumption capacity are used as goals. The balance problem under the complementary operation of various power sources at multiple time scales is considered, and the following features are included:

[0014] Taking resource endowment as the limiting factor of the scale of new energy development and considering the restrictions on grid parity, the total scale of new energy that can be developed at parity in the power system is calculated; the power system's new energy acceptance capacity is calculated through the peak-shaving capacity constraint; considering the impact of large-scale access of new energy on the safety of the power grid and the stability characteristics of the system, taking DC interlocking as the condition for grid fault verification, the power system's new energy acceptance scale considering frequency safety indicators is calculated; considering the sustainable development of various power sources, the scale of new energy development in the power system constrained by economy is calculated.

[0015] As a further improvement of the present invention, the sustainable development of various types of power sources including new energy and thermal power, new energy and grid, and flexible resource coordination planning are considered;

[0016] The resource endowment constraints include considering theoretical reserves, technically exploitable amounts, and considering grid parity restrictions to determine the renewable energy parity exploitable amounts.

[0017] As a further improvement of the present invention, the peak-shaving capacity constraint is based on the guaranteed output of wind power, and an electric power balance analysis is carried out to determine the scale of conventional power sources. The resource conditions of each region, the transmission cost of the power grid, the peak-shaving power supply situation, and the distribution of power abandonment periods are comprehensively considered to formulate a new energy plan. Taking into account the seasonal and monthly characteristics of new energy, medium- and long-term simulations are carried out to obtain power supply maintenance arrangements and hydropower electricity distribution, and then an 8760-hour production simulation calculation is carried out considering the new energy prediction error and the exchange capacity constraints of the zone section. After determining that the power abandonment rate meets the requirements, an inter-provincial mutual assistance analysis is carried out, as well as a sensitivity analysis of the delay in the commissioning of pumped storage, changes in the scale of solar thermal energy, and changes in the number of DC hours to obtain the final conclusion.

[0018] As a further improvement of the present invention, the safety and stability constraint takes into account the impact of new energy sources with low inertia and low short-circuit capacity characteristics on the stability of the new power system, and proposes a method of limiting constraint faults through DC interlocking.

[0019] As a further improvement of the present invention, starting from the sustainable development of various power sources means:

[0020] First, the break-even hours of thermal power in each province and region are calculated based on coal prices, electricity prices, and power source investment costs. Then, considering the negative correlation between thermal power utilization hours and the scale of new energy, the subsidy amount and the scale of new energy are weighed to determine the final scale of new energy that takes economic constraints into consideration.

[0021] As a further improvement of the present invention, the scale of new energy development considering different constraints, namely resource endowment constraint, peak-shaving capacity constraint, safety and stability constraint, and economic constraint, is reduced. If the policy requirements are not met, the supporting grid planning and policy support are adjusted to ultimately reach the required new energy scale.

[0022] A new energy delivery-end multi-dimensional constraint new energy development scale calculation system, comprising:

[0023] The boundary adjustment determination module is used to determine the load, power supply and grid structure of the planned horizontal year as the boundary conditions of the entire calculation;

[0024] The constraint factor calculation module is used to take resource endowment constraints, peak load capacity constraints, safety and stability constraints, and economic constraints as different constraint conditions, with the power system new energy abandonment rate as an indicator, and with the goal of reducing the start-up of conventional thermal power and improving the new energy consumption capacity, considering the balance problem under the complementary operation of various power sources at multiple time scales; starting from the sustainable development of various power sources, the new energy development scale considering different constraint factors is calculated under the boundary conditions of the same planning level year;

[0025] The module for obtaining the developable scale is used to reduce the scale of new energy development considering different constraints under four conditions: resource endowment constraint, peak-shaving capacity constraint, safety and stability constraint, and economic constraint, and analyze whether the supporting policies are met and adjust the boundary conditions to obtain the developable scale of new energy with new energy as the main body under a certain planning level year.

[0026] A new energy sending end multi-dimensional constraint new energy development scale equipment, comprising:

[0027] Memory,

[0028] processor,

[0029] The processor is configured to: execute the new energy sending-end multi-dimensional constraint new energy development scale method.

[0030] A computer-readable storage medium, when the instructions in the storage medium are executed by a processor, enables the processor to execute the method for multi-dimensionally constraining the scale of new energy development at the new energy sending end.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] The new power system with new energy as the main body has brought great challenges to the balance and safety of the power system due to the increasing proportion of new energy, the randomness, volatility and power electronic characteristics of new energy. The method proposed in the present invention can reasonably determine the scale of new energy development, and on the premise of solving the safety and balance problems of the power system at the sending end of high-proportion new energy, take into account economic and policy requirements, calculate and determine the scale of new energy planning that meets multi-dimensional constraints, with the characteristics of clear conditions, clear processes and strong practicality, which can effectively improve the level of new energy acceptance and avoid large-scale abandonment of new energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a calculation flow chart of the calculation method of the scale of new energy development with multi-dimensional constraints at the new energy sending end;

[0034] Figure 2 It is a flow chart for calculating the scale of new energy development considering peak load constraints;

[0035] Figure 3 This is a schematic diagram of the structure of a new energy sending end multi-dimensional constraint new energy development scale system of the present invention;

[0036] Figure 4 The figure is a schematic diagram of the structure of an electronic device of the present invention. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0038] In order to avoid the situation where a high proportion of power curtailment is caused by a mismatch between the scale of new energy construction and its absorption capacity, it is necessary to scientifically assess the new energy absorption capacity from the planning stage, formulate reasonable planning goals, and guide the high-quality development of new energy.

[0039] Based on massive data, a new energy development planning method is proposed that comprehensively considers four dimensional factors: resource constraints, peak-shaving capacity constraints, comprehensive economic constraints of power sources, and power grid security and stability constraints. The reasonable scale and layout of new energy zoning development in the regional sending-end power system is calculated, and a new energy development map is drawn.

[0040] like Figure 1 As shown, a new energy sending end multi-dimensional constraint new energy development scale method includes the following steps:

[0041] Determine the load, power supply and grid structure of the planned horizontal year as the boundary conditions of the entire calculation;

[0042] The resource endowment constraint, peak load capacity constraint, safety and stability constraint, and economic constraint are respectively used as different constraint conditions, and the power system new energy abandonment rate is used as an indicator. The goal is to reduce the start-up of conventional thermal power and improve the new energy consumption capacity. The balance problem under the complementary operation of various power sources at multiple time scales is considered; starting from the sustainable development of various power sources, the scale of new energy development considering different constraint factors is calculated under the boundary conditions of the same planning level year;

[0043] The scale of new energy development considering different constraints under the four conditions of resource endowment constraint, peak-shaving capacity constraint, safety and stability constraint, and economic constraint is reduced, and whether the supporting policies are met is analyzed and the boundary conditions are adjusted to obtain the scale of new energy development with new energy as the main body under a certain planning level year.

[0044] Example

[0045] The technical solutions and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings.

[0046] The present invention provides a method for calculating the scale of new energy development with multi-dimensional constraints at the new energy sending end.

[0047] Combined with the development trend of new power systems, the load, power source and grid in the planning year are determined as the boundary conditions of the entire calculation. Resource endowment constraints, peak-shaving capacity constraints, safety and stability constraints, and economic constraints are used as different constraints. The power system's renewable energy abandonment rate is taken as the key indicator, and the reduction of conventional thermal power startup and the improvement of renewable energy absorption capacity are taken as the goals. Starting from the sustainable development of various power sources, the scale of renewable energy development considering different constraints is calculated under the boundary conditions of the same planning year. The scale of renewable energy development calculated under the above four constraints is minimized, and it is analyzed whether the supporting policies are met. By adjusting the boundary conditions, the total scale of renewable energy development for a new power system with renewable energy as the main body in a certain planning year can be obtained to guide the development of renewable energy.

[0048] like Figure 1 As shown in the figure, firstly, the planning level year for calculation is selected, and the boundary conditions such as load, grid, power supply, etc. are determined through the planning conclusion of the planning level year. On this basis, the calculation work is carried out.

[0049] Resource endowment constraints are the primary constraints on the scale of new energy development. In addition to the constraints on theoretical reserves and technically exploitable amounts, restrictions on grid parity must also be considered.

[0050] Secondly, the scale of new energy development is calculated considering the peak-shaving capacity constraints.

[0051] Due to the randomness and volatility of new energy, the intra-day and inter-day fluctuations of new energy power far exceed the fluctuations of load, and the peak load regulation problem has become the primary problem restricting the scale of new energy planning. Figure 2 As shown, the present invention establishes a calculation process for the scale of development of new energy in Northwest China taking into account the peak load constraints. First, the resource characteristics are sorted and analyzed (effective capacity coefficient, guaranteed output rate), the load scale and changes as well as the power exchange capacity of the partition are determined, the new energy abandonment rate is clarified as the new energy peak load constraint indicator, and the power balance and production simulation calculation are carried out.

[0052] First, preliminarily estimate the scale of new energy, conduct power balance analysis based on wind power output guarantee, and determine the scale of conventional power sources. Then, carry out a cyclic calculation correction process, comprehensively consider the resource conditions of each sub-region, the transmission cost of the power grid, the peak-shaving power supply situation, and the distribution of power abandonment periods, formulate a new energy plan, consider the seasonal and monthly characteristics of new energy, conduct medium- and long-term simulations, and derive power maintenance arrangements and hydropower distribution. Finally, consider the prediction error of new energy and the constraints of the exchange capacity of the sub-region section to perform 8760-hour production simulation calculations to meet the requirements of the national quota system policy. If the calculated conclusion cannot meet the requirements of the pre-set power abandonment rate, adjust the scale and plan, and recalculate until the power abandonment rate meets the requirements before entering the next step. Conduct sensitivity analysis of pumped storage commissioning lag, changes in solar thermal scale, and changes in DC utilization hours, and end the peak-shaving capacity constraint calculation.

[0053] The third is the calculation of safety and stability constraints. Safety constraints mainly consider the impact of new energy with low inertia and low short-circuit capacity characteristics on power grid safety and system stability characteristics. First, the minimum startup capacity of coal-fired power is calculated based on the single-circuit maximum DC single-pole blocking, bipolar blocking and "same transmission and same reception" DC continuous commutation failure conditions; then, given the scale of new energy and DC transmission scale as boundary conditions, the minimum startup safety conditions of coal-fired power are considered, production simulation is carried out, and the utilization rate of new energy is verified; finally, based on the production simulation results, frequency safety verification is further carried out until the required results are obtained.

[0054] The fourth is the calculation of economic constraints. Economic constraints mainly consider the sustainable development of various power sources, including new energy and thermal power, new energy and grid, and flexible resource coordination planning. First, the break-even hours of thermal power in each province are calculated based on coal prices, electricity prices, and power investment costs; then, considering the negative correlation between thermal power utilization hours and the scale of new energy, the subsidy amount and the scale of new energy are weighed to determine the recommended scale of new energy.

[0055] Finally, by reducing the scale of new energy development calculated based on the above four constraints, analyzing whether the supporting policies are met, and adjusting the boundary conditions, we can obtain the total scale of new energy development for a new power system with new energy as the main body under a certain planning level year to guide the development of new energy.

[0056] like Figure 3 As shown, the present invention also provides a new energy sending end multi-dimensional constraint new energy development scale determination system, comprising:

[0057] The boundary adjustment determination module is used to determine the load, power supply and grid structure of the planned horizontal year as the boundary conditions of the entire calculation;

[0058] The constraint factor calculation module is used to take resource endowment constraints, peak load capacity constraints, safety and stability constraints, and economic constraints as different constraint conditions, with the power system new energy abandonment rate as an indicator, and with the goal of reducing the start-up of conventional thermal power and improving the new energy consumption capacity, considering the balance problem under the complementary operation of various power sources at multiple time scales; starting from the sustainable development of various power sources, the new energy development scale considering different constraint factors is calculated under the boundary conditions of the same planning level year;

[0059] The module for obtaining the developable scale is used to reduce the scale of new energy development considering different constraints under four conditions: resource endowment constraint, peak-shaving capacity constraint, safety and stability constraint, and economic constraint, and analyze whether the supporting policies are met and adjust the boundary conditions to obtain the developable scale of new energy with new energy as the main body under a certain planning level year.

[0060] like Figure 4 As shown, another object of the present invention is to propose a device for multi-dimensionally constraining the scale of new energy development at the new energy sending end, including:

[0061] Memory,

[0062] processor,

[0063] The processor is configured to: execute the new energy sending end multi-dimensional constraint new energy development scale method.

[0064] The present invention also provides a computer-readable storage medium. When the instructions in the storage medium are executed by a processor, the processor is enabled to execute a method for multi-dimensionally constraining the scale of new energy development at the new energy sending end.

[0065] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0066] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0067] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0068] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for calculating the scale of new energy development with multi-dimensional constraints at the new energy sending end, characterized in that: The steps include: Determine the load, power supply and grid structure of the planned horizontal year as the boundary conditions of the entire calculation; The resource endowment constraint, peak load capacity constraint, safety and stability constraint, and economic constraint are respectively used as different constraint conditions, and the power system new energy abandonment rate is used as an indicator. The goal is to reduce the start-up of conventional thermal power and improve the new energy consumption capacity. The balance problem under the complementary operation of various power sources at multiple time scales is considered; starting from the sustainable development of various power sources, the scale of new energy development considering different constraint factors is calculated under the boundary conditions of the same planning level year; The development scale of new energy considering different constraints is reduced by taking the smaller scale under the four conditions of resource endowment constraint, peak load capacity constraint, safety and stability constraint, and economic constraint, and analyzing whether the supporting policies are met and adjusting the boundary conditions to obtain the development scale of new energy with new energy as the main body under a certain planning level year; The resource endowment constraint, peak load capacity constraint, safety and stability constraint, and economic constraint are respectively used as different constraint conditions, the new energy curtailment rate of the power system is used as an indicator, and the reduction of conventional thermal power startup and the improvement of new energy consumption capacity are used as the goals. The balance problem under the complementary operation of various power sources at multiple time scales is considered, including: Taking resource endowment as a limiting factor for the scale of new energy development, considering the restrictions on grid parity, the total scale of new energy parity development in the power system is calculated; the capacity of the power system to accept new energy is calculated through the peak load capacity constraint; considering the impact of large-scale access of new energy on the safety of the power grid and the stability characteristics of the system, taking DC interlocking as the fault verification condition of the power grid, the scale of new energy acceptance in the power system considering the frequency safety index is calculated; considering the sustainable development of various power sources, the scale of new energy development in the power system with economic constraints is calculated; Consider the sustainable development of various power sources, including renewable energy and thermal power, renewable energy and grid, and flexible resource coordination planning; The resource endowment constraints include considering theoretical reserves, technically exploitable quantities, and considering grid-parity restrictions to determine the renewable energy parity exploitable quantities; The peak-shaving capacity constraint is based on the guaranteed output of wind power, and the power balance analysis is carried out to determine the scale of conventional power sources. The resource conditions of each sub-region, the transmission cost of the power grid, the peak-shaving power supply situation, and the distribution of power abandonment periods are comprehensively considered to formulate a new energy plan. Taking into account the seasonal and monthly characteristics of new energy, medium- and long-term simulations are carried out to obtain power supply maintenance arrangements and hydropower distribution. Then, an 8760-hour production simulation calculation is carried out considering the new energy prediction error and the exchange capacity constraints of the sub-regional sections. After determining that the power abandonment rate meets the requirements, an inter-provincial mutual assistance analysis is carried out, as well as a sensitivity analysis of the lag in the commissioning of pumped storage, changes in the scale of solar thermal power, and changes in the number of DC hours, to obtain the final conclusion; The scale of new energy development considering different constraints, namely resource endowment constraint, peak-shaving capacity constraint, safety and stability constraint, and economic constraint, is reduced. If it does not meet policy requirements, the supporting grid planning and policy support are adjusted to ultimately reach the required new energy scale.

2. The method according to claim 1, characterized in that: The safety and stability constraint considers the impact of new energy sources with low inertia and low short-circuit capacity characteristics on the stability of the new power system, and proposes a method of limiting constraint faults through DC blocking.

3. The method according to claim 1, characterized in that: Starting from the sustainable development of various types of power sources means: First, the break-even hours of thermal power in each province and region are calculated based on coal prices, electricity prices, and power source investment costs. Then, considering the negative correlation between thermal power utilization hours and the scale of new energy, the subsidy amount and the scale of new energy are weighed to determine the final scale of new energy that takes economic constraints into consideration.

4. A system for calculating the scale of new energy development with multi-dimensional constraints at the new energy sending end, based on the method for calculating the scale of new energy development with multi-dimensional constraints at the new energy sending end according to any one of claims 1 to 3, characterized in that: include: The boundary adjustment determination module is used to determine the load, power supply and grid structure of the planned horizontal year as the boundary conditions of the entire calculation; The constraint factor calculation module is used to take resource endowment constraints, peak load capacity constraints, safety and stability constraints, and economic constraints as different constraint conditions, with the power system new energy abandonment rate as an indicator, and with the goal of reducing the start-up of conventional thermal power and improving the new energy consumption capacity, considering the balance problem under the complementary operation of various power sources at multiple time scales; starting from the sustainable development of various power sources, the new energy development scale considering different constraint factors is calculated under the boundary conditions of the same planning level year; The module for obtaining the developable scale is used to reduce the scale of new energy development considering different constraints under four conditions: resource endowment constraint, peak-shaving capacity constraint, safety and stability constraint, and economic constraint, and analyze whether the supporting policies are met and adjust the boundary conditions to obtain the developable scale of new energy with new energy as the main body under a certain planning level year.

5. A new energy sending end multi-dimensional constraint new energy development scale equipment, characterized in that, include: Memory, processor, The processor is configured to: execute the new energy sending-end multi-dimensional constraint new energy development scale method as described in any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that: When the instructions in the storage medium are executed by a processor, the processor is enabled to execute the new energy sending end multi-dimensional constraint new energy development scale method as described in any one of claims 1 to 3.

Citation Information

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