New energy high-permeability region wind and light storage cluster, model construction device and friendly grid-connected operation planning method

Abstract

The invention provides a new energy high-permeability region wind and light storage cluster, a model construction device and a friendly grid-connected operation planning method, and the method comprises the steps: obtaining the safe and stable constraint power of a transformer substation based on an N-1 fault according to a main transformer parameter; respectively obtaining a load curve of the transformer substation, an output curve of the new energy station and construction parameters of the collection sending-out station according to the historical data so as to construct the collection sending-out station in combination with the safe and stable constraint power; obtaining the over-limit power and the over-limit electric quantity of the transformer substation based on the collection sending-out station, and obtaining a capacity configuration scheme of the energy storage equipment according to the parameters, the over-limit power and the over-limit electric quantity of the energy storage equipment; a wind and light storage cluster is constructed based on an electric power spot market, a transformer substation, a collection and delivery station, a new energy field station and energy storage equipment. The wind and light storage cluster planned by the method is beneficial to power grid dispatching, high in energy storage utilization rate, beneficial to local energy consumption structure adjustment, and capable of supporting larger-scale new energy development grid connection under the same uploading consumption space.

Description

Technical Field

[0001] This invention relates to the field of integrated scheduling technology for new energy, specifically to a wind-solar-storage cluster, model building device, and grid-friendly operation planning method for areas with high penetration of new energy. Background Technology

[0002] In recent years, with the rapid development of new energy sources, the problem of their low effective power generation capacity has become increasingly prominent, especially during peak electricity consumption periods. New energy sources offer limited support for power supply and are unable to replace traditional power sources. At the same time, the nationwide consumption and utilization of new energy sources is becoming increasingly strained and exhibiting new characteristics: first, curtailment is shifting from sporadic to regular curtailment; second, the curtailment period is changing from the early morning off-peak hours to a combination of early morning and midday; and third, curtailment is shifting from primarily wind power curtailment to primarily solar power curtailment. In response, local governments have issued regulations requiring the simultaneous construction of energy storage facilities when connecting new energy sources to the grid, in order to improve reliable power supply capacity and the level of new energy consumption and utilization.

[0003] However, the above-mentioned grid connection planning approach has practical problems. First, in some regions of China, the scale of energy storage configurations in new energy projects is small and scattered, which is not conducive to grid dispatching, resulting in low energy storage utilization. Second, some new energy planning schemes in certain regions require individual projects to be equipped with a high proportion of energy storage, which is not conducive to project implementation. Summary of the Invention

[0004] This invention addresses the problems existing in the prior art by providing a planning method for the grid-friendly operation of wind, solar and energy storage clusters in areas with high penetration of new energy sources, which is conducive to grid dispatch and has a high energy storage utilization rate. This method enables new energy power plants with a small proportion of energy storage to be connected to the overall system, which is beneficial to the adjustment of the energy consumption structure in the region. Moreover, under the same system transmission and consumption capacity, it can support a larger scale of new energy development and grid connection.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, embodiments of the present invention provide a method for planning the grid-friendly operation of wind-solar-storage clusters in areas with high penetration rates of new energy sources, comprising the following steps: acquiring historical data, energy storage equipment parameters, and main transformer parameters of a substation; based on an N-1 fault, obtaining the safety and stability constraint power of the substation according to the main transformer parameters; obtaining the load curve of the substation, the output curve of at least one new energy power station, and the construction parameters of the collection and transmission station according to the historical data; constructing the collection and transmission station according to the safety and stability constraint power, the load curve, the construction parameters, and the output curve; obtaining the over-limit power and over-limit electricity of the substation based on the collection and transmission station, and obtaining the capacity configuration scheme of the energy storage equipment according to the energy storage equipment parameters, the over-limit power, and the over-limit electricity; and constructing a wind-solar-storage cluster based on the electricity spot market, the substation, the collection and transmission station, the at least one new energy power station, and the energy storage equipment.

[0006] In some embodiments, obtaining the substation's safety and stability constraint power based on the main transformer parameters, based on an N-1 fault, includes: Set up an N-1 fault scenario in the simulation program; Input the main transformer parameters under the N-1 fault scenario; Based on the main transformer parameters, the N-1 fault scenario is run to obtain the safety boundary curve, which is the main transformer power-time safety boundary curve of the substation. The safety and stability constraint power of the substation is obtained based on the safety boundary curve.

[0007] In some embodiments, the load curve includes base load, required response adjustment, and random vibration term.

[0008] In some embodiments, the wind-solar-storage cluster includes the substation, the collection and transmission station, the at least one new energy power station, the energy storage equipment, and an integrated control system.

[0009] In some embodiments, the integrated control system includes a multi-data acquisition layer, a data platform layer, an optimization decision-making layer, and an execution control layer; The multi-source data acquisition layer is used to collect first data, second data, third data and fourth data respectively; the first data is the real-time operation data of the collection and transmission station, the second data is the real-time operation data of the at least one new energy power station, the third data is the real-time operation data of the energy storage device, and the fourth data is the real-time meteorological data of the at least one new energy power station. The data platform layer: Used to obtain a monitoring operation database based on the first data, the second data, the third data, and the fourth data; Used to obtain the fifth data, which is real-time information of the electricity spot market; And for obtaining new energy output forecast, energy storage operation status forecast and electricity spot market transaction boundary information based on the first data, the second data, the third data, the fourth data and the fifth data respectively; The optimization decision layer is used to formulate a quantity quotation strategy, an energy storage charging and discharging strategy, and a new energy curtailment strategy based on the new energy output forecast, the energy storage operation status forecast, and the electricity spot market transaction boundary information, respectively. The execution control layer is used to control the substation and bid for electricity in accordance with the quantity quotation strategy, to control the at least one new energy power station in accordance with the new energy curtailment strategy, and to control the energy storage device in accordance with the energy storage charging and discharging strategy.

[0010] In some embodiments, the energy storage device is a grid-type energy storage device.

[0011] In some embodiments, the energy storage device includes an energy storage device.

[0012] In some embodiments, the energy storage device includes an electrical storage device, a hydrogen production device, and a thermal storage device.

[0013] Secondly, this invention proposes a wind-solar-storage cluster in a region with high penetration of new energy sources. The cluster is constructed using a grid-friendly operation planning method for wind-solar-storage clusters in a region with high penetration of new energy sources. It includes the substation, the collection and transmission station, at least one new energy power station, the energy storage equipment, and an integrated control system. The collection and transmission station is connected between the substation and the at least one new energy power station; The energy storage device is connected to the collection and transmission station; The integrated control system is connected to the substation, the at least one new energy power station, the energy storage equipment, and the electricity spot market.

[0014] Thirdly, this invention proposes a model building device for wind-solar-storage clusters in areas with high penetration of new energy sources, which is used to realize the grid-friendly operation planning method for wind-solar-storage clusters in areas with high penetration of new energy sources. The device includes a data acquisition unit, a calculation unit, an optimization configuration unit, and a model building unit. The data acquisition unit is used to acquire historical data, energy storage device parameters, and main transformer parameters of the substation. The optimized configuration unit: Used to obtain the safety and stability constraint power of the substation based on the main transformer parameters in the context of N-1 faults; Used to obtain the load curve of the substation, the output curve of at least one new energy power station, and the construction parameters of the collection and transmission station based on the historical data. Used to construct the collection and transmission station based on the safety and stability constraint power, the load curve, the construction parameters, and the output curve; Used to obtain the over-limit power and over-limit electricity of the substation based on the collection and sending station; And a capacity configuration scheme for obtaining the energy storage device based on the energy storage device parameters, the over-limit power, and the over-limit electricity; The model building unit is used to build a wind-solar-storage cluster model based on the electricity spot market, the substation, the collection and transmission station, the at least one new energy power station, and the energy storage equipment.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a collection and transmission station, this invention avoids the small and scattered energy storage configuration caused by the small scale of new energy power plants, thus facilitating grid dispatch and improving energy storage utilization. Furthermore, in the research on connecting new energy power plants to the grid, the interrelationships between them are fully considered to achieve wind and solar power complementarity, thereby improving the overall energy storage utilization. Simultaneously, when considering obtaining the substation's safety and stability constraint power through N-1 faults, the assessment focuses on the scale of the new energy power plant cluster achieved through the collection and transmission station. Even new energy power plants with a small proportion of energy storage can be connected to the overall system, which is beneficial for adjusting the local energy consumption structure and for project implementation.

[0016] 2. This invention proposes an optimized planning scheme for wind-solar-storage clusters, which takes into account the output of different new energy power plants such as wind and solar, and can support a larger scale of new energy development and grid connection under the same system power transmission and consumption space. Attached Figure Description

[0017] Figure 1 This is a flowchart illustrating the planning method for grid-friendly operation of wind, solar, and energy storage clusters in areas with high penetration rates of new energy sources, as described in this invention. Figure 2 This is a schematic diagram of the structure of a wind-solar-storage cluster in a region with high penetration of new energy sources in this invention; Figure 3 This is a schematic diagram of the device for constructing a wind-solar-storage cluster model in areas with high penetration of new energy sources in this invention.

[0018] The attached diagram is labeled as follows: 1. Gathering and sending station; 2. New energy power station; 3. Substation; 4. Energy storage equipment; 5. Integrated control system; 6. Electricity spot market. Detailed Implementation

[0019] In response to the problems in the background technology, repeated investigations revealed the following: First, the construction scale of new energy projects in some regions of China is relatively small, resulting in small and scattered energy storage configurations, which is not conducive to grid dispatching and thus leads to low energy storage utilization. Second, existing near-area new energy clusters are usually configured with energy storage on a project-by-project basis, resulting in low overall energy storage utilization. Furthermore, the research on grid connection schemes did not consider other near-area new energy projects, nor did it achieve wind and solar power complementarity. In addition, due to grid safety operation requirements, some regions, when conducting new energy planning research, consider the N-1 power transmission limit of the substation during peak new energy generation periods to evaluate the grid connection system and energy storage configuration scheme of individual projects. This not only limits the scale of new energy that can be developed in the region and is not conducive to the adjustment of the region's energy consumption structure, but may also lead to a need for a high proportion of energy storage for a single project to obtain grid connection approval, which is not conducive to project implementation.

[0020] To clearly illustrate the technical features of this solution, the implementation methods of this application will be described in detail below with reference to the accompanying drawings and embodiments. This will allow for a full understanding and implementation of how this application uses technical means to solve technical problems and achieve corresponding technical effects. The embodiments of this application and the various features within them can be combined with each other without conflict, and the resulting technical solutions are all within the protection scope of this application.

[0021] See Figure 1 In a first aspect, embodiments of the present invention provide a method for planning the grid-friendly operation of wind-solar-storage clusters in areas with high penetration rates of new energy sources, comprising the following steps: acquiring historical data, energy storage device parameters, and main transformer parameters of substations; acquiring first historical data and second historical data, wherein the first historical data includes at least historical load data of the substation, and the second historical data includes at least historical output data of at least one new energy power station, meteorological environmental data, equipment operation data, and grid interaction data. Based on an N-1 fault, the substation's safety and stability constraint power is obtained according to the main transformer parameters; the substation's SCD configuration file is parsed to obtain the main transformer parameters, thereby obtaining the substation's safety and stability constraint power; specifically: in some embodiments, obtaining the substation's safety and stability constraint power based on an N-1 fault and the main transformer parameters includes: Set up an N-1 fault scenario in the simulation program; preferably, set up the N-1 fault scenario through an electromagnetic transient simulation program (EMTP). Input the main transformer parameters under the N-1 fault scenario; The safety boundary curve is obtained by operating the N-1 fault scenario based on the main transformer parameters. The safety boundary curve is the main transformer power-time safety boundary curve of the substation. The safety and stability constraint power of the substation is obtained based on the safety boundary curve.

[0022] Based on historical data, the load curves of the substations, the output curves of at least one renewable energy power plant, and the construction parameters of the collection and transmission stations were obtained; among them: The load curve of the substation is obtained based on the first historical data, including: Wavelet packet decomposition technology was used to analyze the first historical data to obtain load fluctuation characteristics; The load curve of the substation is constructed based on the load fluctuation characteristics; in some embodiments, the load curve includes the base load, the required response adjustment, and a random vibration term to characterize the dynamic change law of the load; the load curve is as follows: ; In the formula, For the load curve, For time, For base load, To respond to the adjustment amount, It is a random vibration term; Based on the second historical data, obtain the power output curve of at least one new energy power station and the construction parameters of the collection and transmission station; Refined meteorological simulation software, such as WRF (Weather Research and Forecasting), is used to evaluate the second historical data to obtain the output curve of each new energy power station. The output curve is usually a per-unit value curve of production output. Based on the output curve, dynamic characteristic analysis is performed to generate the output curve of typical year and uncertainty analysis results. In other words, the construction parameters of the collection and transmission station are obtained according to the output curve of each new energy power station. The collection and transmission station is constructed based on the safety and stability constraint power, load curve, construction parameters and output curve; the collection and transmission station is constructed based on N-1 faults, based on the substation and at least one new energy power station, and then the over-limit power and over-limit electricity of the substation are inferred from the connection of at least one new energy power station to the collection and transmission station. The over-limit power and over-limit electricity of the substation are obtained based on the collection and transmission station; the 8760 simulation can be used, or the simulation can be carried out on typical days such as winter low load and summer low load to calculate the over-limit power and over-limit electricity of the substation after all the new energy power stations in the nearby area are connected to the collection and transmission station. The capacity configuration scheme of the energy storage equipment is obtained based on the parameters of the energy storage equipment, the over-limit power, and the over-limit electricity. If there is no demand for heating or hydrogen in the surrounding area, the configuration scale of the energy storage device, i.e. the capacity configuration scheme, is calculated by setting a reasonable new energy utilization rate based on the excess power and excess electricity. The capacity configuration scheme of the energy storage device is determined based on the duration of the excess power and the cumulative electricity demand, combined with the charging and discharging efficiency and self-discharge rate of the energy storage device. If there is demand for heating or hydrogen in the surrounding area, the configuration scale of energy storage equipment, thermal storage equipment and hydrogen production equipment will be optimized based on the principle of optimal economic efficiency, according to the excess power and excess electricity. The electric energy storage of energy storage equipment, the thermal energy storage of thermal storage equipment and the coordinated operation of hydrogen production equipment will be coordinated to establish a multi-objective optimization model, and the design scheme with the lowest investment cost and the highest operating efficiency will be achieved under the premise of meeting power constraints such as safety and stability constraints. Based on the above construction parameters and capacity configuration scheme, a wind-solar-storage cluster will be constructed based on the electricity spot market, substations, collection and transmission stations, at least one new energy power station, and energy storage equipment.

[0023] The advantages are: by setting up a collection and transmission station, this invention can avoid the small and scattered energy storage configuration caused by the small scale of new energy power plant construction, which is conducive to grid dispatch and improves the utilization rate of energy storage. In the research on the grid connection of new energy power plants, the interrelationship between new energy power plants is fully considered to achieve wind and solar power complementarity, thereby improving the overall utilization rate of energy storage. At the same time, when considering the safety and stability constraint power of substations through N-1 faults, the scale of the new energy power plant cluster realized by the collection and transmission station is evaluated. Even new energy power plants with a small proportion of energy storage can be connected to the overall system, which is conducive to the adjustment of the local energy consumption structure and the implementation of the project.

[0024] Furthermore, when constructing wind, solar, and energy storage clusters, it is necessary to consider electricity spot market information, that is, to enable information exchange between the wind, solar, and energy storage clusters and the electricity spot market, so as to formulate an operation strategy with optimal economic benefits.

[0025] To achieve grid-friendly planning for wind, solar, and energy storage clusters while ensuring that the power fed back to the main transformer does not exceed the target power, the overall energy storage configuration scale is optimized. On the one hand, the overall energy storage configuration scale is optimized, rather than focusing on individual new energy power plants. Under the same system power transmission and consumption capacity, it can support a larger scale of new energy development and grid connection. On the other hand, reasonable new energy utilization rates are explored. During periods of high new energy generation and low load, reasonable power curtailment, green electricity heating, and green electricity hydrogen production are used to control the power fed back to the main transformer.

[0026] In some embodiments, the wind-solar-storage cluster includes a substation, a collection and transmission station, at least one new energy power station, energy storage equipment, and an integrated control system. The integrated control system enables coordinated new energy output, energy storage regulation and grid interaction, and supports collaborative control functions such as new energy hydrogen production and heating when needed.

[0027] In some embodiments, the integrated control system includes a multi-data acquisition layer, a data platform layer, an optimization decision-making layer, and an execution control layer; The multi-source data acquisition layer is used to collect first, second, third, and fourth data respectively. The first data is the real-time operation data of the sending stations, including but not limited to the monitoring data, power data, information security data, video surveillance data, and power prediction data of the sending stations. The second data is the real-time operation data of at least one new energy power station, including but not limited to the monitoring data and key parameters of wind power generation and photovoltaic power generation. The third data is the real-time operation data of energy storage devices, including but not limited to the monitoring data and key parameters of energy storage systems. The fourth data is the real-time meteorological data of at least one new energy power station, including but not limited to the meteorological data such as temperature, irradiance, wind direction, and wind speed of the new energy power station. The multi-source data acquisition layer supports information group acquisition, that is, group acquisition of the first, second, third, and fourth data. It supports information acquisition using wireless networks, and supports automated data channel port duty function, realizing the acquisition of the second data and soft switching of the acquisition main and backup channels.

[0028] Data platform layer: It is used to obtain the monitoring operation database based on the first data, the second data, the third data and the fourth data. The data stored in the monitoring operation database includes electrical monitoring data, meteorological monitoring elements, abnormal problems and other monitoring data. Used to obtain the fifth data, which is real-time information from the electricity spot market; It is used to obtain new energy output forecasts, energy storage operation status forecasts, and electricity spot market transaction boundary information based on the first, second, third, fourth, and fifth data, respectively; and to conduct multi-dimensional analysis on the first, second, third, fourth, and fifth data, including: power output analysis, fault analysis, reliability analysis, trend and limit exceedance analysis, power generation resource analysis, and power generation statistical analysis, to obtain new energy output forecasts, energy storage operation status forecasts, and electricity spot market transaction boundary information; The optimized decision-making layer is used to formulate quotation and pricing strategies, energy storage charging and discharging strategies, and new energy curtailment strategies based on new energy output forecasts, energy storage operation status forecasts, and electricity spot market transaction boundary information. It optimizes the strategies for new energy power plants and energy storage equipment to participate in electricity trading, providing peak power supply capacity while taking into account wind and solar power consumption issues, reducing the frequent use of energy storage charging and discharging to extend the service life of energy storage equipment, and reducing the losses of energy storage equipment charging and discharging. The execution control layer is used to control substations and submit bids to the electricity spot market according to the quantity and price quotation strategy; to control at least one renewable energy power plant according to the renewable energy curtailment strategy; and to control energy storage devices according to the energy storage charging and discharging strategy. Controlling substations according to the quantity and price quotation strategy includes comprehensive control of equipment within the substation, specifically including the opening and closing of switches and disconnectors, changing transformer tap positions, switching reactive power compensation devices, and controlling inverter start / stop or output, among other control and regulation functions. Control of at least one renewable energy power plant includes comprehensive control of photovoltaic or wind turbine equipment; control of energy storage devices includes comprehensive control of the energy storage devices themselves. During control or regulation, each device in the wind-solar-storage cluster requires strict measures to ensure the safety and reliability of control operations and prevent malfunctions.

[0029] See Figure 2 Secondly, this invention proposes a wind-solar-storage cluster in areas with high penetration of new energy sources. It is constructed using a grid-friendly operation planning method for wind-solar-storage clusters in areas with high penetration of new energy sources. The cluster includes a substation 3, a collection and transmission station 1, at least one new energy power station 2, energy storage equipment 4, and an integrated control system 5. The substation 3 is connected to the power grid. The receiving and sending station 1 is connected between substation 3 and at least one new energy power station 2; Energy storage device 4 is connected to the collection and transmission station 1; The integrated control system 5 is connected to the substation 3, at least one new energy power station 2, energy storage equipment 4 and electricity spot market 6 respectively.

[0030] When the wind-solar-storage cluster is connected to the grid, if the substation 3 connected to the grid does not exceed its limits, it utilizes the collection and transmission station 1 to package and transmit green electricity from wind power, photovoltaic, and other new energy power plants 2 to generate revenue. If the substation 3 exceeds its limits, it first utilizes the centrally configured energy storage device 4 to store the green electricity from wind power, photovoltaic, and other new energy power plants 2; if the SOC of the energy storage device 4 has reached 100%, it chooses to reasonably curtail electricity to ensure that the back-feeding power from the main transformer of the grid does not exceed its limits. During peak load periods and when the average settlement price in the electricity spot market 6 is high, the energy storage device 4 discharges to generate additional revenue.

[0031] The benefits are that it can achieve system-friendly functions such as reliable power supply during peak hours in the regional power grid, proactive reduction of power transmission from renewable energy clusters to the grid, optimization and management of power quality, and safe emergency power supply. Furthermore, within the same system transmission and consumption capacity, it can support larger-scale renewable energy development and grid connection. Simultaneously, in terms of operation, it can control the reasonable utilization rate of renewable energy, adopt reasonable power curtailment, green electricity for heating, and green electricity for hydrogen production, and coordinate with energy storage operation to achieve proactive peak shaving.

[0032] The above describes the case where energy storage device 4 in a wind-solar-storage cluster only includes electrical storage equipment. If there is industrial demand for heat or hydrogen in the surrounding area, energy storage device 4 will include not only electrical storage equipment but also hydrogen production equipment and thermal storage equipment. This allows for the further utilization of abandoned renewable energy for heating and hydrogen production, and the optimization of the configuration scale of hydrogen production, heating, and electrical storage based on economic efficiency.

[0033] In addition, the energy storage technology route can be further optimized, namely, energy storage device 4 adopts grid-type energy storage device to realize network-friendly functions such as smooth power output of substation, primary frequency regulation, inertia support and voltage regulation.

[0034] The integrated control system 5 enables the monitoring of power generation, real-time status monitoring of energy storage equipment, and charging and discharging of wind power, photovoltaic and other new energy power stations 2 within the wind-solar-storage cluster. It also enables information exchange with the electricity spot market 6 trading center to formulate the most economically efficient operation strategy.

[0035] See Figure 3 Thirdly, this invention proposes a model building device for wind-solar-storage clusters in areas with high penetration of new energy sources, which is used to realize a grid-friendly operation planning method for wind-solar-storage clusters in areas with high penetration of new energy sources. The device includes a data acquisition unit, a calculation unit, an optimization configuration unit, and a model building unit. The data acquisition unit is used to acquire historical data, energy storage device parameters, and main transformer parameters of the substation; Optimized configuration unit: Used to obtain the substation's safety and stability constraint power based on the main transformer parameters in the case of N-1 faults; It is used to obtain the load curve of the substation, the output curve of at least one new energy power station, and the construction parameters of the collection and transmission station based on historical data. Used to construct a collection and transmission station based on safety and stability constraints, load curves, construction parameters, and output curves; Used to obtain the over-limit power and over-limit electricity of the substation based on the collection and sending station; And a capacity configuration scheme for energy storage devices based on their parameters, over-limit power, and over-limit electricity. The model building unit is used to build a wind-solar-storage cluster model based on the electricity spot market, substations, collection and transmission stations, at least one new energy power station, and energy storage equipment.

[0036] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A new energy high-penetration area wind-solar-storage cluster friendly grid-connected operation planning method, characterized in that, The method comprises the following steps: obtaining historical data, energy storage device parameters and transformer parameters of a substation; obtaining safe and stable constraint power of the substation according to the transformer parameters based on N-1 fault; obtaining load curve of the substation, output curve of at least one new energy station and construction parameters of a collection and sending station according to the historical data respectively; constructing the collection and sending station according to the safe and stable constraint power, the load curve, the construction parameters and the output curve; obtaining over-limit power and over-limit power of the substation based on the collection and sending station, obtaining capacity configuration scheme of an energy storage device according to the energy storage device parameters, the over-limit power and the over-limit power, and constructing a wind-solar-storage cluster based on a power spot market, the substation, the collection and sending station, the at least one new energy station and the energy storage device. 2.The new energy high-penetration area wind-solar-storage cluster friendly grid-connected operation planning method according to claim 1, characterized in that, The method comprises the following steps: setting an N-1 fault scene in a simulation program; inputting the transformer parameters under the N-1 fault scene; running the N-1 fault scene based on the transformer parameters to obtain a safe boundary curve, which is a main transformer power-time safe boundary curve of the substation; obtaining the safe and stable constraint power of the substation according to the safe boundary curve. 3.The new energy high-penetration area wind-solar-storage cluster friendly grid-connected operation planning method according to claim 1, characterized in that, The load curve comprises basic load, response adjustment amount and random vibration term.

4. The new energy high-penetration area wind-solar-storage cluster friendly grid-connected operation planning method according to claim 1, characterized in that, The wind-solar-storage cluster comprises the substation, the collection and sending station, the at least one new energy station, the energy storage device and an integrated control system.

5. The new energy high-penetration area wind-solar-storage cluster-friendly grid-connected operation planning method according to claim 4, characterized in that, The integrated control system comprises a multi-element data acquisition layer, a data platform layer, an optimization decision layer and an execution control layer; The multi-element data acquisition layer is used to acquire first data, second data, third data and fourth data respectively; the first data is real-time operation data of the collection and sending station, the second data is real-time operation data of the at least one new energy station, the third data is real-time operation data of the energy storage device, and the fourth data is real-time weather data of the at least one new energy station; The data platform layer is used to obtain a monitoring operation database according to the first data, the second data, the third data and the fourth data; obtain fifth data, which is real-time information of the power spot market; and obtain new energy output prediction, energy storage operation state prediction and power spot market transaction boundary information according to the first data, the second data, the third data, the fourth data and the fifth data respectively; The optimization decision layer is used to formulate quantity reporting and pricing strategy, energy storage charging and discharging strategy and new energy power abandonment strategy according to the new energy output prediction, the energy storage operation state prediction and the power spot market transaction boundary information respectively; The execution control layer is used to control the substation and report prices to the power spot market according to the quantity reporting and pricing strategy, control the at least one new energy station according to the new energy power abandonment strategy, and control the energy storage device according to the energy storage charging and discharging strategy. The energy storage device is a network-constructing energy storage device. 6.The new energy high-penetration area wind-solar-storage cluster friendly grid-connected operation planning method according to claim 5, characterized in that, ​ 7. The method according to any one of claims 1-6, wherein the method is characterized in that, The energy storage device includes an electricity storage device. 8.The new energy high-penetration area wind-solar-storage cluster friendly grid-connected operation planning method according to any one of claims 1-6, characterized in that, The energy storage device includes an electricity storage device, a hydrogen production device, and a heat storage device.

9. A new energy high penetration area wind-solar-storage cluster, constructed by the new energy high penetration area wind-solar-storage cluster-friendly grid-connected operation planning method of any one of claims 1-8, characterized in that, The integrated control system is connected with the transformer substation, the at least one new energy station, the energy storage device, and the electricity spot market, respectively. The collection and sending station is connected between the transformer substation and the at least one new energy station. The energy storage device is connected with the collection and sending station. The integrated control system is connected with the transformer substation, the at least one new energy station, the energy storage device, and the electricity spot market, respectively.

10. A new energy high penetration area wind-solar-storage cluster model construction device for implementing the new energy high penetration area wind-solar-storage cluster friendly grid-connected operation planning method of any one of claims 1-8, characterized in that, The data acquisition unit is used to acquire historical data, energy storage device parameters, and main transformer parameters of the transformer substation. The optimization configuration unit is used to obtain safe and stable constraint power of the transformer substation according to the main transformer parameters based on N-1 failure; The optimization configuration unit is used to obtain a load curve of the transformer substation, an output curve of the at least one new energy station, and construction parameters of the collection and sending station according to the historical data, respectively; The optimization configuration unit is used to construct the collection and sending station according to the safe and stable constraint power, the load curve, the construction parameters, and the output curve; The optimization configuration unit is used to obtain over-limit power and over-limit electricity of the transformer substation based on the collection and sending station; The optimization configuration unit is used to obtain a capacity configuration scheme of the energy storage device according to the energy storage device parameters, the over-limit power, and the over-limit electricity; The model construction unit is used to construct a wind-solar-storage cluster model based on the electricity spot market, the transformer substation, the collection and sending station, the at least one new energy station, and the energy storage device. ​ ​

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