A method, system, device and storage medium for evaluating the benefits of solar thermal power generation

Abstract

The present invention proposes a method, system, device and storage medium for evaluating the benefits of solar thermal power generation. The method includes: given a new energy consumption index, according to the annual production simulation, calculating the installed capacity demand of wind power, photovoltaic power and thermal power and the system power supply reliability in the absence of solar thermal power generation as the first result; given a solar thermal power generation installed capacity scale, keeping the new energy consumption index and power supply reliability unchanged, according to the annual production simulation, calculating the installed capacity demand of wind power, photovoltaic power and thermal power as the first result; calculating the capacity benefit of solar thermal power generation, the replacement benefit of new energy installed capacity and the electricity benefit according to the first result and the second result; calculating the national economic net benefit of solar thermal power generation; judging whether the national economic net benefit of solar thermal power generation meets the economic requirements, and outputting the calculation results if it meets the requirements, and determining the reasonable scale of solar thermal power generation of a high-proportion new energy system according to the calculation results. This method is used to maximize the national economic benefits, comprehensively evaluate the benefits and costs of solar thermal power generation, and determine the reasonable scale of solar thermal power generation of a high-proportion new energy system.

Description

Technical Field

[0001] The present invention relates to the field of power system planning and operation scheduling, and in particular to a method for evaluating the benefits of solar thermal power generation in a high-proportion new energy system. Background Art

[0002] From the perspective of the development prospects of the power system, the requirements for the proportion of new energy power generation will become higher and higher. Relying solely on wind power and photovoltaics to meet the requirements for the proportion of new energy consumption will lead to a high rate of new energy abandonment, or even fail to meet the new energy consumption proportion target. Concentrating solar power (CSP, referred to as solar thermal) has the characteristics of cleanliness and good regulation performance. Using solar thermal power generation instead of wind power and photovoltaics will obtain three types of benefits:

[0003] 1) CSP can replace part of conventional thermal power due to its adjustability and bring into play capacity benefits;

[0004] 2) Solar thermal power generation itself is a new energy power generation, which can ensure that the amount of new energy power remains unchanged and give full play to the benefits of solar thermal new energy power;

[0005] 3) Solar thermal power generation is adjustable, which can improve system operating conditions and reduce coal consumption.

[0006] Establishing a method that comprehensively considers the above three types of benefits and comprehensively evaluates the benefits of CSP in the power system is of great significance for the assessment of the reasonable scale of CSP development. Summary of the invention

[0007] In order to solve the problem of comprehensive evaluation of the benefits of solar thermal power generation in the prior art, the present invention proposes a method, system, equipment and storage medium for evaluating the benefits of solar thermal power generation in a high-proportion new energy system. The method of the present invention can be used to comprehensively evaluate the benefits and costs of solar thermal power generation.

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

[0009] A method for evaluating the benefits of solar thermal power generation in a high-proportion new energy system comprises the following steps:

[0010] Given the new energy consumption index, based on the annual production simulation, the installed capacity demand of wind power, photovoltaic power and thermal power and the system power supply reliability in the absence of solar thermal power generation are calculated as the first result;

[0011] Given the installed capacity of CSP, keeping the new energy consumption index and power supply reliability unchanged, the wind power, photovoltaic and thermal power installed capacity requirements are calculated as the first result based on the annual production simulation.

[0012] Calculate the capacity benefit of CSP, the replacement benefit of new energy installed capacity, and the electricity benefit based on the first and second results; further calculate the net national economic benefit of CSP;

[0013] Determine whether the national economic net benefit of CSP meets economic requirements, output the calculation results, and determine the reasonable scale of CSP in a high-proportion new energy system based on the calculation results.

[0014] As a further improvement of the present invention, the annual production simulation method includes power supply planning, load forecasting, new energy power generation output characteristics, daily load characteristic curve, annual load characteristic curve and DC power transmission curve.

[0015] As a further improvement of the present invention, the constraint on the wind power and photovoltaic installed capacity scale after the CSP power generation is put into operation is that the amount of new energy power generation absorbed by the system remains unchanged.

[0016] As a further improvement of the present invention, the method for calculating the capacity benefit of solar thermal power generation is:

[0017]

[0018] Wherein, the thermal power installed capacity demand without CSP is H1, and the thermal power installed capacity demand with CSP is H2;

[0019] The calculation method for the benefits of replacing photovoltaic installations with solar thermal is:

[0020]

[0021] In the formula, the photovoltaic installed capacity demand without solar thermal power generation is C1, and the photovoltaic installed capacity scale with solar thermal power generation is C2;

[0022] The calculation method for the benefits of replacing wind power installed capacity with solar thermal power is:

[0023]

[0024] In the formula, the wind power installed capacity demand without CSP power generation is B1, and the wind power installed capacity scale with CSP power generation is B2;

[0025] The calculation method of electricity efficiency of CSP is:

[0026] M CSP =M1-M2

[0027] Wherein, the system coal consumption without CSP power generation is M1, and the system coal consumption with CSP power generation is M2.

[0028] As a further improvement of the present invention, when the national economic net benefit of solar thermal power generation is greater than 0, it is economical to build solar thermal power generation, otherwise it is uneconomical to build solar thermal power generation.

[0029] As a further improvement of the present invention, when calculating the thermal power installed capacity demand after the solar thermal power generation is put into operation, the equal reliability index method is adopted to calculate the thermal power installed capacity demand after the solar thermal power generation is put into operation while ensuring that the power supply reliability remains unchanged, and the change in the system thermal power installed capacity demand before and after the solar thermal power generation is put into operation is used to measure the capacity benefit of the solar thermal power generation.

[0030] As a further improvement of the present invention, the calculation method of the national economic net income of solar thermal power generation is as follows:

[0031] The net national economic benefit of CSP is Q CSP for:

[0032] Q CSP =R CSP -T CSP

[0033] Among them, the income of CSP is R CSP :

[0034]

[0035] Where: r H is the capital recovery coefficient in the life cycle of thermal power; r P is the capital recovery coefficient in the photovoltaic life cycle; r W is the capital recovery coefficient in the life cycle of wind power; p H is the unit cost of thermal power; p P is the unit cost of photovoltaic power generation; p W is the unit cost of wind power; α H Thermal power operation and maintenance fee rate; α P Photovoltaic operation and maintenance rate; α W is the wind power operation and maintenance fee rate; p M is the standard coal price;

[0036] Among them, the cost expenditure of CSP is T CSP for:

[0037] T CSP =r CSP p CSP C CSP +α CSP p CSP C CSP

[0038] Where: r CSP is the capital recovery factor during the life cycle of CSP; p CSP is the unit cost of light and heat; α CSP This is the maintenance rate for solar thermal operation.

[0039] A high-proportion new energy system solar thermal power generation benefit evaluation system, comprising:

[0040] The first calculation module is used to calculate the installed capacity demand of wind power, photovoltaic power and thermal power and the system power supply reliability in the absence of solar thermal power generation based on the annual production simulation given the new energy consumption index as the first result;

[0041] The second calculation module is used to calculate the wind power, photovoltaic and thermal power installed capacity requirements as the first result based on the annual production simulation, given the installed capacity scale of solar thermal power generation, keeping the new energy consumption index and power supply reliability unchanged;

[0042] The third calculation module is used to calculate the capacity benefit of solar thermal power generation, the replacement benefit of new energy installed capacity, and the electricity benefit based on the first result and the second result; and further calculate the national economic net benefit of solar thermal power generation;

[0043] The judgment module is used to judge whether the national economic net benefit of solar thermal power generation meets the economic requirements. If it does, the calculation results are output and the reasonable scale of solar thermal power generation in a high-proportion new energy system is determined based on the calculation results.

[0044] An electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for evaluating the benefits of solar thermal power generation in a high-proportion new energy system when executing the computer program.

[0045] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for evaluating the benefits of solar thermal power generation in a high-proportion new energy system.

[0046] Compared with the prior art, the beneficial effects of the present invention are:

[0047] The method of the present invention takes into account the capacity benefit, electricity benefit, and new energy installed capacity substitution benefit of CSP in a high-proportion new energy system, and determines the national economic net benefit of CSP in a high-proportion new energy system through the benefits and costs generated by CSP. When calculating the national economic benefits of CSP, 8760 hours of production simulation is used to comprehensively evaluate the capacity benefit, electricity benefit, and new energy installed capacity substitution benefit of CSP. This method can be used to maximize the national economic benefits of the system, comprehensively evaluate the benefits and costs of CSP, and thus determine the reasonable scale of CSP in a high-proportion new energy system. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the capacity benefit of CSP;

[0049] Figure 2 is a calculation flow chart of the present invention;

[0050] Figure 3 This is a schematic diagram of the structure of a solar thermal power generation benefit evaluation system for a high-proportion new energy system;

[0051] Figure 4 A schematic diagram of the electronic device structure. DETAILED DESCRIPTION

[0052] 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.

[0053] like Figure 2 As shown, the first object of the present invention is to provide a method for evaluating the benefits of solar thermal power generation in a high-proportion new energy system, comprising the following steps:

[0054] 1) Given the new energy consumption index E, 8760h production simulation is performed to calculate the wind power and photovoltaic power generation E without solar thermal power generation. W1 and E P1 , wind power installed capacity demand B1, photovoltaic installed capacity demand C1, thermal power installed capacity demand H1, system coal consumption M1, so that wind power and photovoltaic power generation E W1 、E P1 satisfy:

[0055] E=E W1 +E P1 (1)

[0056] 2) Given the installed capacity of CSP, 8760h production simulation is performed to calculate the installed capacity of wind power and photovoltaic power B2 and C2, and the power generation of wind power, photovoltaic power and CSP E W2 、E P2 and E CSP , the system coal consumption M2, and meet the following requirements:

[0057] E=E W2 +E P2 +E CSP (2)

[0058] 3) Gradually reduce the scale of thermal power installed capacity, 8760h production simulation, under the condition that the new energy power generation and power supply reliability indicators remain unchanged, calculate the thermal power installed capacity demand H2 until it meets:

[0059] 4) Calculate the efficiency of CSP capacity:

[0060]

[0061] 5) Calculate the benefits of replacing photovoltaic installations with solar thermal:

[0062]

[0063] 6) Calculate the benefits of replacing wind power with solar thermal power:

[0064]

[0065] 7) Calculate the electricity efficiency of solar thermal power generation:

[0066] M CSP =M1-M2 (6)

[0067] 8) Calculate the net national economic benefits of CSP

[0068] The benefits of solar thermal power generation are:

[0069]

[0070] Where: r H is the capital recovery coefficient in the life cycle of thermal power; r P is the capital recovery coefficient in the photovoltaic life cycle; r W is the capital recovery coefficient in the life cycle of wind power; p H is the unit cost of thermal power; p P is the unit cost of photovoltaic power generation; p W is the unit cost of wind power; α H Photovoltaic operation and maintenance rate; α P Photovoltaic operation and maintenance rate; α W is the wind power operation and maintenance fee rate; p M Standard coal price.

[0071] The cost of building a solar thermal power plant is:

[0072] T CSP =r CSP p CSP C CSP +α CSP p CSP C CSP (8)

[0073] Where: r CSP is the capital recovery factor during the life cycle of CSP; p CSP is the unit cost of light and heat; α CSP This is the maintenance rate for solar thermal operation.

[0074] The net national economic benefit of CSP is:

[0075] Q CSP =RCSP -T CSP (9)

[0076] When the national economic net benefit of CSP is greater than 0, it is economical to build CSP, otherwise it is uneconomical.

[0077] The principle of the present invention is: this method takes the new energy consumption index as a constraint, comprehensively considers the capacity benefit, electricity benefit, and new energy installed capacity substitution benefit of solar thermal, adopts the 8760h production simulation program for production simulation, and considers factors such as the coordinated operation of multiple power sources, the start and stop of solar thermal units, and the cross-day adjustment of energy storage.

[0078] The following is a detailed description using a certain actual system as an example. It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the present invention and its application.

[0079] Example

[0080] The present invention provides a method for evaluating the benefits of solar thermal power generation in a high-proportion new energy system, and the specific steps are as follows:

[0081] (1) Read in information such as power supply planning, load forecast, renewable energy power generation, daily load characteristic curve, annual load characteristic curve, CSP power generation cost, photovoltaic power generation cost and technical parameters of each province and region. Considering the changes in CSP and photovoltaic construction costs, three scenarios are analyzed, as shown in Table 1.

[0082] Table 1 Construction cost parameters

[0083]

[0084] (2) Given a new energy power generation consumption target of 76.6 billion kWh, a full-year 8760-hour production simulation was conducted to calculate the wind power installed capacity demand, photovoltaic installed capacity demand, thermal power installed capacity demand, and system coal consumption in the absence of solar thermal power generation. The calculation results are shown in the first column of Table 2.

[0085] (3) Given a CSP installed capacity of 2 million kW, reducing the scale of wind power and photovoltaic power, and performing 8760 h of production simulation, the wind power installed capacity demand and photovoltaic installed capacity demand are calculated while ensuring that the renewable energy power generation remains unchanged. The calculation results are shown in the second column of Table 2.

[0086] (4) Gradually reduce the scale of thermal power installed capacity, 8760h production simulation, and calculate the thermal power installed capacity demand and system coal consumption under the condition that the new energy power generation and power supply reliability indicators remain unchanged. The calculation results are shown in the third column of Table 2.

[0087] Table 2 Production operation simulation results (new energy consumption index 76.6 billion kWh)

[0088] project No light heat Solar thermal power 2 million kilowatts 1. Installed power capacity / 10,000 kilowatts Photovoltaic 2100 1150 Wind power 2400 2400 Photothermal 0 200 Hydropower 992 992 Thermal power installed capacity 3947 3907 Capacity benefits 0 40 2. New energy electricity / billion kWh 766 766 Wind power 504 533 Photovoltaic power 262 159 Solar thermal power 0 74 3. New energy power abandonment rate 11.7％ 5.00％ 4. System coal consumption / 10,000 tons 5664 5565

[0089] (5) The benefits and costs of CSP are calculated, as shown in Table 3. It can be seen that under the constraint of absorbing 76.6 billion kWh of new energy electricity, CSP has national economic benefits under cost scenarios A to C, and the net benefits are all greater than 0.

[0090] Table 3 Evaluation of the benefits of solar thermal power generation (considering the constraint of 76.6 billion kWh of new energy consumption index)

[0091] Cost Scenario A Cost Scenario B Cost Scenario C 1. Social benefits / 10,000 yuan 576551 432973 337255 Replacement of thermal power / 10,000 kilowatts 40 40 40 Annual value of thermal power / 10,000 yuan 13473 13473 13473 Thermal power operation and maintenance fee / 10,000 yuan 4800 4800 4800 Replacement photovoltaic / 10,000 kW 950 950 950 Photovoltaic annual value / 10,000 yuan 431093 301765 215546 Photovoltaic operation and maintenance fee / 10,000 yuan 47500 33250 23750 Reduce coal consumption / 10,000 tons 100 100 100 Electricity efficiency / 10,000 yuan 79685 79685 79685 2. Cost / 10,000 yuan 432887 303021 216444 New solar thermal investment 5000000 3500000 2500000 Solar thermal investment equivalent 382887 268021 191444 Solar thermal operation and maintenance fee 50000 35000 25000 Solar thermal annual cost 432887 303021 216444 3. Economic benefits 143664 129952 120811

[0092] For comparison, Table 4 gives a comparison of the simulation results of production operation with and without solar thermal power for a given wind power and photovoltaic installed capacity (without considering the constraints of new energy consumption indicators).

[0093] It can be seen that given the scale of wind power and photovoltaic power generation, after the addition of the solar thermal power station to the system, solar thermal power generation only has capacity benefits and electricity benefits (reducing coal consumption), and the calculation results of the national economic benefits of solar thermal power generation are shown in Table 5. Under the current cost of solar thermal, photovoltaic, and wind power (in cost scenario A), the construction of solar thermal power generation is not nationally economical. In cost scenario B, when the cost of solar thermal, photovoltaic, and wind power is reduced to 70% of the current cost, the net benefit of solar thermal is still less than 0. In cost scenario C, when the cost of solar thermal, photovoltaic, and wind power is reduced to 50% of the current cost, solar thermal power generation will be profitable.

[0094] Through the above comparison, it can be seen that the national economic benefits of solar thermal power generation under the constraint of new energy power generation consumption index are better than those without considering the constraint of new energy power generation consumption. In essence, this is because when the scale of wind power and photovoltaic installed capacity is given, the system's benefits are only the saved coal and reduced thermal power installed capacity; when evaluated according to a given new energy consumption, the system's benefits increase the saved new energy (wind power, photovoltaic) installed capacity, so the solar thermal benefit is better than the former.

[0095] Table 4 Production operation simulation results (given wind power and photovoltaic scale)

[0096] No light heat Solar thermal power 2 million kilowatts 1. Installed power capacity / 10,000 kilowatts Photovoltaic 1150 1150 Wind power 2400 2400 Solar thermal installation 0 200 Thermal power installed capacity 3997 3907 Solar thermal capacity benefit 0 90 2. New energy power generation / 100 million kWh 685 766 Wind power 530 533 Photovoltaic power 155 159 Solar thermal power 0 74 3. New energy power abandonment rate 6.00％ 5.00％ 4. Coal consumption / 10,000 tons 5851 5565

[0097] Table 5 Benefit evaluation of CSP power station (given wind power and photovoltaic scale)

[0098]

[0099]

[0100] like Figure 3 As shown, another object of the present invention is to provide a high-proportion new energy system solar thermal power generation benefit evaluation system, characterized in that it includes:

[0101] The acquisition module is used to obtain boundary conditions such as system technical parameters, new energy consumption index constraints, power supply scale, compliance characteristics, and new energy characteristics;

[0102] The first calculation module is used to calculate the installed capacity demand of wind power, photovoltaic power and thermal power and the system power supply reliability in the absence of solar thermal power generation based on the annual production simulation given the new energy consumption index as the first result;

[0103] The second calculation module is used to calculate the wind power, photovoltaic and thermal power installed capacity requirements as the first result based on the annual production simulation, given the installed capacity scale of solar thermal power generation, keeping the new energy consumption index and power supply reliability unchanged;

[0104] The third calculation module is used to calculate the capacity benefit of solar thermal power generation, the replacement benefit of new energy installed capacity, and the electricity benefit based on the first result and the second result; and further calculate the national economic net benefit of solar thermal power generation;

[0105] The judgment module is used to judge whether the national economic net benefit of solar thermal power generation meets the economic requirements. If it does, the calculation results are output and the reasonable scale of solar thermal power generation in a high-proportion new energy system is determined based on the calculation results.

[0106] like Figure 4 As shown, the third object of the present invention is to provide an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for evaluating the benefits of solar thermal power generation in a high-proportion new energy system when executing the computer program.

[0107] The fourth object of the present invention is to provide a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, it implements the steps of the method for evaluating the benefits of solar thermal power generation in a high-proportion new energy system.

[0108] 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.

[0109] 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.

[0110] 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 including 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.

[0111] 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.

[0112] 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 evaluating the benefits of solar thermal power generation in a high-proportion new energy system, characterized in that: The following steps are involved: Given the new energy consumption index, based on the annual production simulation, the installed capacity demand of wind power, photovoltaic power and thermal power and the system power supply reliability in the absence of solar thermal power generation are calculated as the first result; Given the installed capacity of CSP, keeping the new energy consumption index and power supply reliability unchanged, the wind power, photovoltaic and thermal power installed capacity requirements are calculated as the first result based on the annual production simulation. Calculate the capacity benefit of CSP, the replacement benefit of new energy installed capacity, and the electricity benefit based on the first and second results; further calculate the net national economic benefit of CSP; Determine whether the national economic net benefit of CSP meets economic requirements, output the calculation results, and determine the reasonable scale of CSP with a high proportion of new energy systems based on the calculation results; The calculation method of CSP capacity benefit is: In the formula, thermal power installed capacity demand H 1. Thermal power generation capacity demand H 2; The calculation method for the benefits of replacing photovoltaic installations with solar thermal is: In the formula, the photovoltaic installed capacity demand without CSP is C 1. The photovoltaic installation demand under the condition of solar thermal power generation is C 2; The calculation method for the benefits of replacing wind power installed capacity with solar thermal power is: In the formula, the wind power installed capacity demand without CSP is B 1. The wind power installed capacity demand with solar thermal power generation is B 2; The calculation method of electricity efficiency of CSP is: In the formula, the system coal consumption without CSP power generation is M 1. The system coal consumption with CSP is M 2; The calculation method of the national economic net benefit of CSP is as follows: Net national economic benefits of CSP for: Among them, the income of solar thermal power generation : Where: is the capital recovery factor during the life cycle of thermal power; is the capital recovery factor during the photovoltaic life cycle; is the capital recovery factor during the life cycle of wind power; Cost of thermal power units; The unit cost of photovoltaic power generation; The unit cost of wind power; Thermal power operation and maintenance fee rates; PV operation and maintenance rates; The wind power operation and maintenance rate; is the standard coal price; Among them, the cost of solar thermal power generation for: Where: is the capital recovery factor during the life cycle of CSP; The unit cost of light and heat; This is the maintenance rate for solar thermal operation.

2. According to the method for evaluating the capacity efficiency of solar thermal power generation in a high-proportion new energy system of claim 1, it is characterized in that: The annual production simulation methods include power supply planning, load forecasting, new energy power generation output characteristics, daily load characteristic curve, annual load characteristic curve and DC power transmission curve.

3. The method for evaluating the capacity efficiency of solar thermal power generation in a high-proportion new energy system according to claim 1 is characterized in that: The constraint on the installed capacity of wind power and photovoltaic power after CSP is put into operation is that the amount of new energy power absorbed by the system remains unchanged.

4. The method for evaluating the capacity efficiency of solar thermal power generation in a high-proportion new energy system according to claim 1 is characterized in that: When the national economic net benefit of CSP is greater than 0, it is economical to build CSP, otherwise it is uneconomical.

5. The method for evaluating the capacity efficiency of solar thermal power generation in a high-proportion new energy system according to claim 1 is characterized in that: When calculating the thermal power generation demand after CSP is put into operation, the equal reliability index method is adopted to calculate the thermal power generation demand after CSP is put into operation while ensuring the power supply reliability remains unchanged. The capacity benefit of CSP is measured by the change in the thermal power generation demand before and after CSP is put into operation.

6. A system for evaluating the benefits of solar thermal power generation in a high-proportion new energy system, based on the method for evaluating the benefits of solar thermal power generation in a high-proportion new energy system according to any one of claims 1 to 5, characterized in that: include: The first calculation module is used to calculate the installed capacity demand of wind power, photovoltaic power and thermal power and the system power supply reliability in the absence of solar thermal power generation based on the annual production simulation given the new energy consumption index as the first result; The second calculation module is used to calculate the wind power, photovoltaic and thermal power installed capacity requirements as the first result based on the annual production simulation, given the installed capacity scale of solar thermal power generation, keeping the new energy consumption index and power supply reliability unchanged; The third calculation module is used to calculate the capacity benefit of solar thermal power generation, the replacement benefit of new energy installed capacity, and the electricity benefit based on the first result and the second result; and further calculate the national economic net benefit of solar thermal power generation; The judgment module is used to judge whether the national economic net benefit of solar thermal power generation meets the economic requirements. If it does, the calculation results are output and the reasonable scale of solar thermal power generation in a high-proportion new energy system is determined based on the calculation results.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for evaluating the efficiency of solar thermal power generation in a high-proportion new energy system as described in any one of claims 1 to 5 when executing the computer program.

8. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the method for evaluating the efficiency of solar thermal power generation in a high-proportion new energy system according to any one of claims 1 to 5.

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