Power supply method and system for starting thermal power unit

Abstract

The present invention relates to a power supply method and system for starting a thermal power unit, comprising: determining the power provided by the new energy power generation system to the thermal power unit during the startup process based on the minimum power generation power of the new energy power generation system during the startup process; determining the power provided by the power grid to the thermal power unit during the startup process based on the power provided by the new energy power generation system during the startup process; and supplying power to the thermal power unit using the power provided by the new energy power generation system and the power provided by the power grid. The technical solution provided by the present invention incorporates new energy power generation into the power supply during the startup process of the thermal power unit, thereby improving the utilization efficiency of new energy and ensuring the reliability of power supply during the startup of the thermal power unit.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a power supply method and system for starting a thermal power unit. Background Art

[0002] As clean, renewable energy sources, the vigorous development of wind and solar power can not only alleviate electricity shortages and provide sustainable power for economic development, but also reduce overreliance on traditional fossil fuels, and is of great significance for energy conservation and environmental protection. Countries around the world are actively promoting the development of renewable energy, primarily wind and photovoltaic power. However, these power sources exhibit randomness and volatility, and cannot maintain a continuous and stable power supply. my country's power supply structure is primarily based on thermal power, which consumes electricity during startup and shutdown, resulting in high startup and shutdown costs. However, the ultra-short-term power forecasting of renewable energy sources offers high accuracy, allowing for relatively accurate prediction of renewable energy output up to four hours in advance. Therefore, renewable energy power forecasting can be incorporated into thermal power generation scheduling, allowing renewable energy power to be used to power thermal power units, improving the efficiency of renewable energy utilization. However, this does pose the risk of power shortages due to inaccurate renewable energy power forecasting.

[0003] Therefore, a method for effectively utilizing the power generated by new energy to start up and supply power to thermal power units is needed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a power supply method and system for starting up a thermal power unit. By effectively predicting the power generation power of renewable energy, renewable energy power generation is incorporated into the power supply during the startup process of the thermal power unit, thereby improving the utilization efficiency of renewable energy and ensuring the reliability of power supply during the startup of the thermal power unit.

[0005] The purpose of the present invention is achieved by adopting the following technical solutions:

[0006] A power supply method for starting a thermal power unit, wherein the improvement is that the method comprises:

[0007] determining the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit according to the minimum power generation power of the new energy power generation system during the startup process of the thermal power unit;

[0008] determining the power provided by the power grid to the thermal power unit during the startup process of the thermal power unit according to the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit;

[0009] The thermal power set is powered by the power provided by the new energy power generation system to the thermal power set during startup and by the power grid to the thermal power set during startup.

[0010] Preferably, the minimum power generation power of the new energy power generation system at the time t during the startup of the thermal power unit is determined by the following formula:

[0011]

[0012] In the above formula, is the predicted power of the new energy power generation system at the tth moment during the startup of the thermal power unit, P install_now is the installed capacity of the new energy power generation system, ε' pre_0.01 、ε' pre_0.02 ......ε' pre_1 The predicted power errors corresponding to the per-unit values ​​of the predicted power of the new energy power generation system are 0.01, 0.02...1 respectively.

[0013] Furthermore, let n = 0.01, 0.02...1, and determine the predicted power error ε' corresponding to the predicted power of the new energy power generation system when the per-unit value is n according to the following formula: pre_n :

[0014] ε' pre_n =P' pre_n -P' act_n_min

[0015] In the above formula, P' pre_n is the historical power prediction value corresponding to the unit value of the predicted power of the new energy power generation system when n is the unit value, P' act_n_min The minimum value of the actual power of the new energy power generation system when the per-unit value of the predicted power of the new energy power generation system is n.

[0016] Preferably, determining the power provided by the new energy power generation system to the thermal power unit during startup of the thermal power unit according to the minimum power generation power of the new energy power generation system during startup of the thermal power unit includes:

[0017] The power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit is determined by the following formula:

[0018]

[0019] Where, is the minimum power generation power of the new energy power generation system at the tth moment during the startup of the thermal power unit; P reserve Temporarily provide power to thermal power units or shut down loads at time t;

[0020] The power P of the thermal power unit temporarily providing electricity or shutting down the load at time t is determined by the following formula: reserve :

[0021] P reserve =P pump +P store +P gas +P oil +P trans- +P load-

[0022] Where, P pump is the power that the pumped storage power station can provide at time t; P store P is the power that the energy storage station can provide at time t; gas The power provided by the gas generator set at time t; P oil The power provided by the internal fuel generator set at time t; P trans- P is the power of the tie line transmission power that is adjusted down or up at time t; load- is the load power removed by the thermal power plant at time t.

[0023] Furthermore, the determining the power provided by the power grid to the thermal power unit during the startup of the thermal power unit according to the power provided by the new energy power generation system to the thermal power unit during the startup of the thermal power unit includes:

[0024] The power provided by the power grid to the thermal power unit at time t during the startup process of the thermal power unit is determined by the following formula:

[0025]

[0026] Where, P load is the load power required to start the thermal power unit at time t; It is the power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit.

[0027] A power supply system for starting a thermal power unit, wherein the improvement is that the system comprises:

[0028] A first determining module is configured to determine the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit according to the minimum power generation power of the new energy power generation system during the startup process of the thermal power unit;

[0029] The second determining module is configured to determine the power provided by the power grid to the thermal power unit during the startup process of the thermal power unit according to the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit;

[0030] Power supply module: used to power the thermal power unit using the power provided by the new energy power generation system to the thermal power unit during the startup process and the power provided by the power grid to the thermal power unit during the startup process.

[0031] Preferably, the minimum power generation power of the new energy power generation system at the time t during the startup of the thermal power unit is determined by the following formula:

[0032]

[0033] In the above formula, is the predicted power of the new energy power generation system at the tth moment during the startup of the thermal power unit, P install_now is the installed capacity of the new energy power generation system, ε' pre_0.01 、ε' pre_0.02 ......ε' pre_1 The predicted power errors corresponding to the per-unit values ​​of the predicted power of the new energy power generation system are 0.01, 0.02...1 respectively.

[0034] Furthermore, let n = 0.01, 0.02...1, and determine the predicted power error ε' corresponding to the predicted power of the new energy power generation system when the per-unit value is n according to the following formula: pre_n :

[0035] ε' pre_n =P' pre_n -P' act_n_min

[0036] In the above formula, P' pre_n is the historical power prediction value corresponding to the unit value of the predicted power of the new energy power generation system when n is the unit value, P' act_n_min The minimum value of the actual power of the new energy power generation system when the per-unit value of the predicted power of the new energy power generation system is n.

[0037] Preferably, the first determining module is configured to:

[0038] The power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit is determined by the following formula:

[0039]

[0040] Where, is the minimum power generation power of the new energy power generation system at the tth moment during the startup of the thermal power unit; P reserve Temporarily provide power to thermal power units or shut down loads at time t;

[0041] The power P of the thermal power unit temporarily providing electricity or shutting down the load at time t is determined by the following formula: reserve :

[0042] P reserve =P pump +P store +Pgas +P oil +P trans- +P load-

[0043] Where, P pump is the power that the pumped storage power station can provide at time t; P store P is the power that the energy storage station can provide at time t; gas The power provided by the gas generator set at time t; P oil The power provided by the internal fuel generator set at time t; P trans- P is the power of the tie line transmission power that is adjusted down or up at time t; load- is the load power removed by the thermal power plant at time t.

[0044] Preferably, the second determining module is used to:

[0045] The power provided by the power grid to the thermal power unit at time t during the startup process of the thermal power unit is determined by the following formula:

[0046]

[0047] Where, P load is the load power required to start the thermal power unit at time t; It is the power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit.

[0048] Compared with the closest prior art, the present invention has the following beneficial effects:

[0049] The technical solution provided by this solution determines the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit according to the minimum power generation power of the new energy power generation system during the startup process of the thermal power unit, determines the power provided by the power grid to the thermal power unit during the startup process of the thermal power unit according to the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit, and utilizes the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit and the power provided by the power grid to the thermal power unit during the startup process of the thermal power unit to supply power to the thermal power unit, thereby realizing the incorporation of the power of new energy into the power supply during the startup process of the thermal power unit, improving the utilization efficiency of new energy, and ensuring the reliability of power supply during the startup process of the thermal power unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a flow chart of a power supply method for starting a thermal power unit provided by the present invention;

[0051] Figure 2 Schematic diagram comparing the predicted power and the minimum power that can be generated by the new energy power generation system in an embodiment of the present invention;

[0052] Figure 3 is a schematic diagram of the power that can be provided by the new energy power generation system in an embodiment of the present invention;

[0053] Figure 4 This is a schematic diagram of the power that the power grid needs to provide for starting a thermal power unit in an embodiment of the present invention;

[0054] Figure 5 The present invention provides a schematic structural diagram of a power supply system for starting a thermal power unit. DETAILED DESCRIPTION

[0055] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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 making creative efforts shall fall within the scope of protection of the present invention.

[0057] Currently, there are two methods for incorporating renewable energy power forecasts into thermal power generation schedules. One is to incorporate this into thermal power generation schedules based on historical minimum renewable energy generation. For example, if a grid has 10,000MW of renewable energy installed capacity and the historical minimum renewable energy output is 20MW, then 20MW of thermal power can be shut down to make room for renewable energy. This approach is more conservative. The other approach relies on empirical judgment. For example, if a dispatcher sees strong winds for the next three days and the output is forecast to remain above 500MW, then they can shut down 100MW of thermal power to make room for renewable energy.

[0058] The present invention provides a power supply method for starting a thermal power unit. The method first counts the distribution of historical new energy power prediction errors, and at the same time counts the power of the new energy power generation system temporarily providing power or shutting down the load during the startup of the thermal power unit. The sum of the lower value corresponding to the historical maximum lower deviation of the power prediction value and the power value of the temporarily providing power or shutting down the load during the startup of the thermal power unit is used as the load to be included in the thermal power startup mode arrangement, that is, the new energy is fully incorporated into the unit combination, and the power supply reliability is guaranteed. Figure 1 As shown, the method includes:

[0059] Step 101, determining the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit according to the minimum power generation power of the new energy power generation system during the startup process of the thermal power unit;

[0060] Step 102, determining the power provided by the power grid to the thermal power unit during the startup process of the thermal power unit based on the power provided by the new energy power generation system to the thermal power unit during the startup process;

[0061] Step 103 : Powering the thermal power unit by utilizing the power provided by the new energy power generation system to the thermal power unit during startup and the power provided by the power grid to the thermal power unit during startup.

[0062] The technical solution provided by the present invention can incorporate new energy forecasting into the combination of thermal power units on the basis of ensuring power supply security, reduce thermal power startup, free up space for new energy consumption, and ensure power supply reliability. Specifically:

[0063] The minimum power generation power of the new energy power generation system at the time t during the startup of the thermal power unit is determined by the following formula:

[0064]

[0065] In the above formula, is the predicted power of the new energy power generation system at the tth moment during the startup of the thermal power unit, P install_now is the installed capacity of the new energy power generation system, ε' pre_0.01 、ε' pre_0.02 ......ε' pre_1 The predicted power errors corresponding to the per-unit values ​​of the predicted power of the new energy power generation system are 0.01, 0.02...1 respectively.

[0066] Let n = 0.01, 0.02...1, and determine the error ε' of the predicted power corresponding to the unit value of the predicted power of the new energy power generation system when n is used as the following formula: pre_n :

[0067] ε' pre_n =P' pre_n -P' act_n_min

[0068] In the above formula, P' pre_n is the historical power prediction value corresponding to the unit value of the predicted power of the new energy power generation system when n is the unit value, P' act_n_min The minimum value of the actual power of the new energy power generation system when the per-unit value of the predicted power of the new energy power generation system is n.

[0069] For example, Figure 2 When the per-unit value of the predicted power of the new energy power generation system is 0.5, the per-unit value of the minimum actual power of the new energy power generation system is 0.155, and the per-unit value of the error of the predicted power of the new energy power generation system is 0.345.

[0070] The step 101 includes:

[0071] The power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit is determined by the following formula:

[0072]

[0073] Where, is the minimum power generation power of the new energy power generation system at the tth moment during the startup of the thermal power unit; P reserve Temporarily provide power to thermal power units or shut down loads at time t;

[0074] For example, Figure 3 As shown in the figure, the predicted value of the power that can be generated by the new energy power generation system at 18:00 is 1864MW. According to the error of the predicted power of the new energy power generation system, the minimum power that can be generated by the new energy power generation system at 18:00 is determined to be 609MW. Adding the temporarily available power of 200MW, the power that can be provided by the new energy power generation system at 18:00 is 809MW.

[0075] The power P of the thermal power unit temporarily providing electricity or shutting down the load at time t is determined by the following formula: reserve :

[0076] P reserve =P pump +P store +P gas +P oil +P trans- +P load-

[0077] Where, P pump is the power that the pumped storage power station can provide at time t; P store P is the power that the energy storage station can provide at time t; gas The power provided by the gas generator set at time t; P oil The power provided by the internal fuel generator set at time t; P trans- P is the power of the tie line transmission power that is adjusted down or up at time t; load- is the load power removed by the thermal power plant at time t.

[0078] The step 102 includes:

[0079] The power provided by the power grid to the thermal power unit at time t during the startup process of the thermal power unit is determined by the following formula:

[0080]

[0081] Where, P load is the load power required to start the thermal power unit at time t; It is the power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit.

[0082] For example, Figure 4 As shown, the power curve that the power grid needs to provide can be obtained through the load power curve required for starting the thermal power unit and the power curve that the new energy power generation system can provide.

[0083] The present invention also provides a power supply system for starting a thermal power unit, such as Figure 5 As shown, including:

[0084] A first determining module is configured to determine the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit according to the minimum power generation power of the new energy power generation system during the startup process of the thermal power unit;

[0085] The second determining module is configured to determine the power provided by the power grid to the thermal power unit during the startup process of the thermal power unit according to the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit;

[0086] Power supply module: used to power the thermal power unit using the power provided by the new energy power generation system to the thermal power unit during the startup process and the power provided by the power grid to the thermal power unit during the startup process.

[0087] The minimum power generation power of the new energy power generation system at the time t during the startup of the thermal power unit is determined by the following formula:

[0088]

[0089] In the above formula, is the predicted power of the new energy power generation system at the tth moment during the startup of the thermal power unit, P install_now is the installed capacity of the new energy power generation system, ε' pre_0.01 、ε' pre_0.02 ......ε' pre_1 The predicted power errors corresponding to the per-unit values ​​of the predicted power of the new energy power generation system are 0.01, 0.02...1 respectively.

[0090] Let n = 0.01, 0.02...1, and determine the error ε' of the predicted power corresponding to the unit value of the predicted power of the new energy power generation system when n is used as the following formula: pre_n :

[0091] ε'pre_n =P' pre_n -P' act_n_min

[0092] In the above formula, P' pre_n is the historical power prediction value corresponding to the unit value of the predicted power of the new energy power generation system when n is the unit value, P' act_n_min The minimum value of the actual power of the new energy power generation system when the per-unit value of the predicted power of the new energy power generation system is n.

[0093] The first determining module is configured to:

[0094] The power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit is determined by the following formula:

[0095]

[0096] Where, is the minimum power generation power of the new energy power generation system at the tth moment during the startup of the thermal power unit; P reserve Temporarily provide power to thermal power units or shut down loads at time t;

[0097] The power P of the thermal power unit temporarily providing electricity or shutting down the load at time t is determined by the following formula: reserve :

[0098] P reserve =P pump +P store +P gas +P oil +P trans- +P load-

[0099] Where, P pump is the power that the pumped storage power station can provide at time t; P store P is the power that the energy storage station can provide at time t; gas The power provided by the gas generator set at time t; P oil The power provided by the internal fuel generator set at time t; P trans- P is the power of the tie line transmission power that is adjusted down or up at time t; load- is the load power removed by the thermal power plant at time t.

[0100] The second determining module is configured to:

[0101] The power provided by the power grid to the thermal power unit at time t during the startup process of the thermal power unit is determined by the following formula:

[0102]

[0103] Where, P load is the load power required to start the thermal power unit at time t; It is the power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit.

[0104] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0105] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes 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 steps in the process. 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.

[0106] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work 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 The function specified in one or more boxes.

[0107] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the 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 by the scope of protection of the claims of the present invention.

Claims

1. A power supply method for starting a thermal power unit, characterized in that: The method comprises: determining the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit according to the minimum power generation power of the new energy power generation system during the startup process of the thermal power unit; determining the power provided by the power grid to the thermal power unit during the startup process of the thermal power unit according to the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit; The thermal power unit is supplied with power by the new energy power generation system during startup of the thermal power unit and by the power grid during startup of the thermal power unit; Among them, the minimum power generation power of the new energy power generation system at the tth moment during the startup process of the thermal power unit is determined by the following formula: In the above formula, is the predicted power of the new energy power generation system at the tth moment during the startup of the thermal power unit, P install_now is the installed capacity of the new energy power generation system, ε' pre_0.01 、ε' pre_0.02 ......ε' pre_1 The predicted power errors corresponding to the per-unit values ​​of the predicted power of the new energy power generation system are 0.01, 0.02...1 respectively.

2. The method according to claim 1, wherein Let n = 0.01, 0.02...1, and determine the predicted power error ε′ corresponding to the predicted power of the new energy power generation system when the per-unit value is n according to the following formula: pre_n : e' pre_n =P′ pre_n -P′ act_n_min In the above formula, P′ pre_n is the historical power prediction value corresponding to the unit value of the predicted power of the new energy power generation system when n is the unit value, P′ act_n_min The minimum value of the actual power of the new energy power generation system when the per-unit value of the predicted power of the new energy power generation system is n.

3. The method according to claim 1, wherein The determining, based on the minimum power generation power of the new energy power generation system during the startup of the thermal power generation unit, the power provided by the new energy power generation system to the thermal power generation unit during the startup of the thermal power generation unit comprises: The power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit is determined by the following formula: Where, is the minimum power generation power of the new energy power generation system at the tth moment during the startup of the thermal power unit; P reserve Temporarily provide power to thermal power units or shut down loads at time t; The power P of the thermal power unit temporarily providing electricity or shutting down the load at time t is determined by the following formula: reserve : P reserve =P pump +P store +P gas +P oil +P trans- +P load- Where, P pump is the power that the pumped storage power station can provide at time t; P store P is the power that the energy storage station can provide at time t; gas The power provided by the gas generator set at time t; P oil The power provided by the internal fuel generator set at time t; P trans- P is the power of the tie line transmission power that is adjusted down or up at time t; load- is the load power removed by the thermal power plant at time t.

4. The method according to claim 1, wherein The determining the power provided by the power grid to the thermal power unit during the startup process of the thermal power unit according to the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit includes: The power provided by the power grid to the thermal power unit at time t during the startup process of the thermal power unit is determined by the following formula: Where, P load is the load power required to start the thermal power unit at time t; It is the power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit.

5. A power supply system for starting a thermal power unit, characterized in that: The system comprises: A first determining module is configured to determine the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit according to the minimum power generation power of the new energy power generation system during the startup process of the thermal power unit; The second determining module is configured to determine the power provided by the power grid to the thermal power unit during the startup process of the thermal power unit according to the power provided by the new energy power generation system to the thermal power unit during the startup process of the thermal power unit; Power supply module: used to supply power to the thermal power unit by utilizing the power provided by the new energy power generation system to the thermal power unit during startup and the power provided by the power grid to the thermal power unit during startup; Among them, the minimum power generation power of the new energy power generation system at the tth moment during the startup process of the thermal power unit is determined by the following formula: In the above formula, is the predicted power of the new energy power generation system at the tth moment during the startup of the thermal power unit, P install_now is the installed capacity of the new energy power generation system, ε' pre_0.01 、ε' pre_0.02 ......ε' pre_1 The predicted power errors corresponding to the per-unit values ​​of the predicted power of the new energy power generation system are 0.01, 0.02...1 respectively.

6. The system according to claim 5, wherein: Let n = 0.01, 0.02...1, and determine the predicted power error ε′ corresponding to the predicted power of the new energy power generation system when the per-unit value is n according to the following formula: pre_n : e' pre_n =P′ pre_n -P′ act_n_min In the above formula, P′ pre_n is the historical power prediction value corresponding to the unit value of the predicted power of the new energy power generation system when n is the unit value, P′ act_n_min The minimum value of the actual power of the new energy power generation system when the per-unit value of the predicted power of the new energy power generation system is n.

7. The system according to claim 5, wherein: The first determining module is used to determine the power provided by the new energy power generation system to the thermal power unit at the tth moment during the startup process of the thermal power unit according to the following formula: Where, is the minimum power generation power of the new energy power generation system at the tth moment during the startup of the thermal power unit; P reserve Temporarily provide power to thermal power units or shut down loads at time t; The power P of the thermal power unit temporarily providing electricity or shutting down the load at time t is determined by the following formula: reserve : P reserve =P pump +P store +P gas +P oil +P trans- +P load- Where, P pump is the power that the pumped storage power station can provide at time t; P store P is the power that the energy storage station can provide at time t; gas The power provided by the gas generator set at time t; P oil The power provided by the internal fuel generator set at time t; P trans- P is the power of the tie line transmission power that is adjusted down or up at time t; load- is the load power removed by the thermal power plant at time t.

8. The system according to claim 5, wherein: The second determining module is used to determine the power provided by the power grid to the thermal power unit at time t during the startup process of the thermal power unit according to the following formula: Where, P load is the load power required to start the thermal power unit at time t; It is the power provided by the new energy power generation system to the thermal power unit at time t during the startup process of the thermal power unit.

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