Power plant unit deep peak regulation method and related system

Abstract

The invention belongs to the field of peak regulation of power plant units, and discloses a deep peak regulation method for a power plant unit and a related system, and the method enables the unit to participate in peak regulation in an optimal mode at a load peak through optimizing the peak regulation gear of the unit, and guarantees that sufficient power supply can be provided in time at a power demand peak. Therefore, the situation that the peak load requirement cannot be met due to insufficient output power of the unit is avoided, and the stability and power supply reliability of a power grid are improved. According to the method, the unit price of standard coal and the income of each gear during peak regulation of the unit are comprehensively considered, so that the unit can be effectively prevented from running for a long time in a low-load state. By adjusting the load gear of the unit, unnecessary fuel consumption is avoided at the demand valley, energy waste caused by low-efficiency operation is reduced, and therefore the overall power generation efficiency is improved. The unit can operate at the economic optimal load gear, the power generation efficiency of unit electric quantity is improved, and the operation cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the field of peak shaving of power plant units, and particularly relates to a method for deep peak shaving of power plant units and a related system. Background Art

[0002] With the continuous change of power demand, the load volatility of the power grid has become more and more obvious, especially showing large differences between day and night, and between weekdays and weekends. In order to effectively cope with the load fluctuations of the power grid and improve the stability and economy of the power system, deep peak shaving has become an important technical means in the operation of power plant units. Deep peak shaving refers to flexibly adjusting the output power of power plant units according to the change of load demand, so as to provide optimal power generation capacity at different load levels. Especially during peak load periods, the response speed and power supply stability of the system are improved through reasonable unit scheduling.

[0003] However, in practical applications, many power plants do not have the ability of deep peak shaving, resulting in a series of problems and deficiencies. First of all, it is unable to effectively cope with load fluctuations, which may lead to the inability to provide sufficient power supply in a timely manner during peak power demand, while during low demand periods, the units still operate at high load, causing fuel waste and reducing power generation efficiency. Secondly, the lack of deep peak shaving ability will also increase the difficulty of power grid scheduling, increase the instability of the system and the uncertainty of power supply. Especially when dealing with sudden load changes, the power grid scheduling will become more complex and time-consuming. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above deficiencies that it is unable to provide sufficient power supply in a timely manner during peak power demand and causes fuel waste and reduces power generation efficiency during low demand periods, and to provide a method for deep peak shaving of power plant units and a related system.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a method for deep peak shaving of power plant units, including the following steps: Obtain the unit price of standard coal purchased by the unit, and obtain the unit price of standard coal consumed when the unit participates in peak shaving according to the unit price of standard coal purchased; Obtain the benefits of different gears when the unit participates in peak shaving; According to the unit price of standard coal consumed when the unit participates in peak shaving and the costs of different gears, obtain the benefits of different gears when the unit does not participate in peak shaving and when it participates in peak shaving; According to the benefits of different gears when the unit does not participate in peak shaving and when it participates in peak shaving, obtain the gear corresponding to the optimal peak shaving benefit of the unit; Perform peak shaving on the unit according to the gear corresponding to the optimal peak shaving benefit of the unit.

[0006] A further improvement of the present invention lies in obtaining the unit price of standard coal for unit procurement, and the specific method for obtaining the unit price of standard coal consumed when the unit participates in peak shaving is as follows:

[0007] Wherein, is the unit price of standard coal consumed when the unit participates in peak shaving, is the unit price of standard coal for procurement, is the conversion coefficient.

[0008] A further improvement of the present invention lies in the specific method for obtaining the benefits at different levels when the unit participates in peak shaving as follows: Obtain the power generation benefits at different levels when the unit participates in peak shaving M g , obtain the service fee C as and the apportioned cost C aaf , and perform the following calculations based on the power generation benefits M g , the obtained service fee C as and the apportioned cost to obtain the comprehensive benefit; .

[0009] A further improvement of the present invention lies in that the calculation method of the power generation benefit M g is as follows:

[0010] Wherein, P 65 is the power generation amount at different levels when the unit participates in peak shaving, is the marginal cost per degree of power at different levels of the unit's power during peak shaving; The calculation method for obtaining the service fee C as is as follows:

[0011] Wherein, F ss is the auxiliary service scale cost, ε p is the profit coefficient; The calculation method for the apportioned cost is as follows:

[0012] Wherein, is the apportioned cost of the deep peak shaving service fee, is the thermal power generation amount.

[0013] A further improvement of the present invention lies in that, according to the unit price of standard coal consumed when the unit participates in peak shaving and the costs of different levels, the specific method for obtaining the benefits of different levels when the unit does not participate in peak shaving and participates in peak shaving is as follows: Obtain the benefits of the unit when not participating in peak shaving, the non-peak shaving assessment fee, the additional sharing fee per kilowatt-hour, and the additional sharing fee for non-peak shaving; According to the benefits of the unit when not participating in peak shaving, the non-peak shaving assessment fee, the additional sharing fee per kilowatt-hour, and the additional sharing fee for non-peak shaving, obtain the benefits of different levels when the unit does not participate in peak shaving.

[0014] A further improvement of the present invention lies in that the benefit of not participating in peak shaving is the benefit of the current unit; The calculation method of the non-peak shaving assessment fee is as follows:

[0015] Wherein, is the non-peak shaving assessment fee, is the peak shaving benefit obtainable by performance, is the actual peak shaving benefit; The additional sharing fee per kilowatt-hour is a preset value; The additional sharing fee for non-peak shaving is the sharing fee that needs to be borne by the increased grid-connected power after non-peak shaving.

[0016] A further improvement of the present invention lies in that, according to the benefits of different levels when the unit does not participate in peak shaving and participates in peak shaving, the specific method for obtaining the level corresponding to the optimal peak shaving benefit of the unit is as follows: Obtain the benefits of different levels when the unit does not participate in peak shaving and participates in peak shaving; Obtain the benefits of different levels when the unit participates in peak shaving and participates in peak shaving; When the peak shaving benefit is higher than the benefit of not participating in peak shaving, select to participate in peak shaving; when the peak shaving benefit is lower than or equal to the benefit of not participating in peak shaving, select not to participate in peak shaving.

[0017] In a second aspect, the present invention provides a deep peak shaving system for a power plant unit, including: A peak shaving unit price acquisition module, configured to acquire the unit price of standard coal purchased by the unit, and obtain the unit price of standard coal consumed when the unit participates in peak shaving according to the purchased unit price of standard coal; A benefit acquisition module, configured to acquire the benefits of different levels when the unit participates in peak shaving; A benefit calculation module, for a user to obtain the benefits of different levels when the unit does not participate in peak shaving and participates in peak shaving according to the unit price of standard coal consumed when the unit participates in peak shaving and the costs of different levels; A gear calculation module, configured to obtain the gear corresponding to the optimal peak shaving benefit of the unit according to the benefits of different gears when the unit does not participate in peak shaving and when it participates in peak shaving; An adjustment module, for adjusting the peak shaving of the unit according to the gear corresponding to the optimal peak shaving benefit of the unit.

[0018] In a third aspect, the present invention provides an electronic device, including a memory and a processor, where the memory stores a computer program, and when the processor executes the computer program, the steps of a method for deep peak shaving of a power plant unit are implemented.

[0019] In a fourth aspect, the present invention provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of a method for deep peak shaving of a power plant unit are implemented.

[0020] Compared with the prior art, the present invention has the following beneficial effects: By optimizing the peak shaving gear of the unit, the present invention enables the unit to participate in peak shaving in an optimal manner during peak load periods, ensuring sufficient power supply in a timely manner during peak power demand. This avoids the situation where the unit's output power is insufficient to meet the peak load demand, improving the stability and power supply reliability of the power grid. By comprehensively considering the unit price of standard coal and the benefits of each gear during peak shaving, the present invention can effectively prevent the unit from operating at a low load for a long time. By adjusting the load gear of the unit, unnecessary fuel consumption is avoided during low-demand periods, reducing energy waste caused by inefficient operation, thereby improving the overall power generation efficiency. The unit can operate at the load gear with the optimal economy, improving the power generation efficiency per unit of electricity and reducing the operating cost. Through accurate benefit analysis, the unit can select the most economical operating state according to the benefit conditions of different peak shaving gears, reducing fuel consumption and peak shaving costs, thereby minimizing the operating cost. During peak periods, by reasonably dispatching the unit, the best economic benefits of the power plant operation can be achieved, while ensuring power supply and improving economic benefits. The present invention enables the power plant unit to flexibly adjust its output power in the face of different load demands. When not participating in deep peak shaving, the unit can still maintain an appropriate power generation output, ensuring the load balance of the power grid. By optimizing the peak shaving gear, the grid operator can better dispatch power resources, reduce the dependence on standby units, and improve the flexibility and efficiency of grid dispatching. The present invention can reduce the inefficient operation of the unit during low-load periods, reduce fuel waste and exhaust emissions. By selecting the optimal load gear, the power plant can reduce the negative impact on the environment, reduce pollutant emissions, and achieve a more environmentally friendly power generation method. By implementing the deep peak shaving method, the power plant can better adapt to the demand fluctuations in the power market, make full use of the benefits of different gears, and enhance the market competitiveness of the power plant. In the case of large fluctuations in power market prices, the unit output can be flexibly adjusted to obtain higher economic benefits. Brief Description of the Drawings

[0021] Figure 1 is a flowchart of the present invention; Figure 2 is a system diagram of the present invention; Figure 3 is the system of Embodiment 2. Detailed Embodiment

[0022] To further understand the content of the present invention, the following will describe the present invention in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments are only for explaining the present invention rather than limiting it.

[0023] Refer to Figure 1 , a method for deep peak shaving of a power plant unit, comprising the following steps: S1. Obtain the unit price of standard coal purchased by the unit, and obtain the unit price of standard coal consumed when the unit participates in peak shaving according to the unit price of standard coal purchased.

[0024] S2. Obtain the benefits of different gears when the unit participates in peak shaving.

[0025] S3. Obtain the benefits of different gears when the unit does not participate in peak shaving and when it participates in peak shaving according to the unit price of standard coal consumed when the unit participates in peak shaving and the costs of different gears.

[0026] S4. Obtain the gear corresponding to the optimal peak shaving benefit of the unit according to the benefits of different gears when the unit does not participate in peak shaving and when it participates in peak shaving.

[0027] S5. Perform peak shaving on the unit according to the gear corresponding to the optimal peak shaving benefit of the unit.

[0028] Refer to Figure 2 , a system for deep peak shaving of a power plant unit, comprising: A peak shaving unit price acquisition module, configured to obtain the unit price of standard coal purchased by the unit, and obtain the unit price of standard coal consumed when the unit participates in peak shaving according to the unit price of standard coal purchased; A benefit acquisition module, configured to obtain the benefits of different gears when the unit participates in peak shaving; A benefit calculation module, for obtaining the benefits of different gears when the unit does not participate in peak shaving and when it participates in peak shaving according to the unit price of standard coal consumed when the unit participates in peak shaving and the costs of different gears; A gear calculation module, configured to obtain the gear corresponding to the optimal peak shaving benefit of the unit according to the benefits of different gears when the unit does not participate in peak shaving and when it participates in peak shaving; An adjustment module, for performing peak shaving on the unit according to the gear corresponding to the optimal peak shaving benefit of the unit.

[0029] Embodiment: Taking a 600MW unit as an example, the economic components of the third-phase large units not participating in deep peak shaving include: increased power generation revenue, increased assessment fees, increased apportioned fees, and subtracted peak shaving revenue.

[0030] Since the unit price of standard coal consumed when the 600MW unit participates in peak shaving is inconsistent with the unit price of purchased standard coal, conversion is required. The conversion formula is as follows:

[0031] In the formula, C upsc is the unit price of standard coal consumed, yuan / ton; C pupsc is the unit price of purchased standard coal, yuan / ton; k a is the conversion coefficient, taking 1.124.

[0032] According to the median value when adjusting from market level 5 to level 2 in Table 1, it can be calculated that when adjusting from market level 5 to level 2, the increased apportioned cost per kWh is 65.72 yuan / MWh, 45.26 yuan / MWh, 26.62 yuan / MWh, and 11.42 yuan / MWh respectively.

[0033]

[0034] In the case of the unit price of purchased standard coal being 1100 yuan / ton, the economic analysis of the 600MW unit not participating in deep peak shaving is shown in Table 2.

[0035] Explanations of each index are as follows: (1) Deep peak shaving fuel cost C dpf is the power generation cost generated by the 600MW unit during 1 hour of deep peak shaving at different deep peak shaving load rate coal consumptions.

[0036] (2) Deep peak shaving electric energy income C dpe is the power generation income generated by the 600MW unit during 1 hour of deep peak shaving at different deep peak shaving load rates after deducting 15 yuan / MWh from the electricity price of 485 yuan / MWh.

[0037] (3) Deep peak shaving electric energy revenue B dpe :

[0038] In the formula, C dpe is the deep peak shaving electric energy income, 10,000 yuan; C dpf is the deep peak shaving fuel cost, 10,000 yuan.

[0039] (4) Auxiliary service thermal power service feeF tps The peak shaving profit generated by different gear depth peak shaving.

[0040] (5) Profit coefficient in the ancillary service market ε bms It is: Define the profit coefficient = actual net profit from deep regulation / due profit from deep regulation. In this year, the deep regulation in the ancillary service market mainly concentrated in the third gear. The profit coefficient of the ancillary service market for the whole year was 38.86%, and the profit coefficient of the unified regulated thermal power for the whole year was 45%. Normally, the deeper the deep regulation, the more the ancillary service income, the less the allocated electricity, and the profit coefficient is directly proportional to the deep regulation depth of the unit. In this round of calculation, when setting the third gear in the market, the profit coefficient is taken as 40%. For each gear down, the profit coefficient increases by 5%, and for each gear up, the profit coefficient decreases by 10%.

[0041] (6) Allocated ancillary service income B as It is:

[0042] In the formula, F tps is the thermal power service fee for ancillary services, in ten thousand yuan; ε bms is the profit coefficient in the ancillary service market.

[0043] (7) Comprehensive income from deep peak shaving B cdp :

[0044] In the formula, B as is the allocated ancillary service income, in ten thousand yuan; B dpe is the electricity energy income from deep peak shaving, in ten thousand yuan.

[0045] Table 2 Calculation table of ancillary service income for the 600MW unit of the power plant

[0046] (8) Peak shaving assessment fee not participated in C npaf It is:

[0047] In the formula, B ap is the peak shaving income that can be obtained by fulfilling the contract, in ten thousand yuan; B op —— actual peak shaving income, in ten thousand yuan.

[0048] (9)Additional sharing fee for not participating in peak shaving C npaa : The sharing fee that needs to be borne for the increased on-grid electricity after not participating in peak shaving.

[0049]

[0050] When the unit price of purchased standard coal is 1,100 yuan / ton and the market deep peak shaving depth reaches three levels or above, the revenue of a 600MW unit participating in deep peak shaving is better than that of not participating in peak shaving; when the market deep peak shaving level is lower than three levels, the revenue of a 600MW unit not participating in peak shaving is better. When the unit price of purchased standard coal exceeds 1,453 yuan / ton, and the market is deep peak shaved to any level, the revenue of a 600MW unit participating in peak shaving is greater than that of not participating in peak shaving.

[0051] In the deep peak shaving market, the first unit does not participate in deep peak shaving; the second and third units are only adjusted to the fourth level; the fourth and fifth units participate in the fifth-level peak shaving. By comparing the annual revenues of the above five units, the revenue situation of participating in deep peak shaving is analyzed.

[0052]

[0053] It can be calculated from Table 4 that: The sharing fee per kWh of the first unit is 28.44 yuan / MWh (sharing fee / weighted on-grid electricity), and the annual net income is -9.270897 million yuan.

[0054] Considering the case where the original on-grid electricity of the fifth-level peak shaving is the same as that of the first unit, the deep peak shaving electricity of the fifth-level peak shaving power plant is converted to 57,978 MWh, and the deep peak shaving electricity of the first unit is 31,296 MWh. Assuming that this differential deep peak shaving electricity is newly generated electricity, according to the marginal contribution per kWh of 60 yuan / MWh, the newly generated electricity revenue is 1.600957 million yuan, and the newly added sharing fee is 758,730 yuan. Then, the comprehensive revenue of the Jinzhushan B3 unit not participating in deep peak shaving is -8.428671 million yuan.

[0055] The average revenue of the units participating in the fifth-level peak shaving is 8.352753 million yuan, and the average revenue of the units participating in the fourth-level peak shaving is 4.787245 million yuan.

[0056] In summary, the revenue of 600MW units participating in peak shaving is higher.

[0057] Example 2: Please refer to Figure 3As shown in the figure, the present invention also provides an electronic device 100 for a deep peak shaving method of a power plant unit; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104.

[0058] The memory 101 can be used to store the computer program 103. The processor 102 realizes the steps of a deep peak shaving method of a power plant unit described in Embodiment 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101. The memory 101 mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the electronic device 100 (such as audio data, etc.). In addition, the memory 101 can include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0059] The at least one processor 102 can be a Central Processing Unit (CPU), or can also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 can be a microprocessor or the processor 102 can also be any conventional processor, etc. The processor 102 is the control center of the electronic device 100 and connects all parts of the entire electronic device 100 through various interfaces and lines.

[0060] The memory 101 in the electronic device 100 stores multiple instructions to implement a deep peak shaving method of a power plant unit. The processor 102 can execute the multiple instructions to achieve: Obtain the unit price of standard coal purchased by the unit, and obtain the unit price of standard coal consumed when the unit participates in peak shaving according to the unit price of standard coal purchased; Obtain the benefits of different gears when the unit participates in peak shaving; Based on the unit price of standard coal consumed when the unit participates in peak shaving and the costs of different levels, the revenues of different levels when the unit does not participate in peak shaving and when it participates in peak shaving are obtained; Based on the revenues of different levels when the unit does not participate in peak shaving and when it participates in peak shaving, the level corresponding to the optimal peak shaving revenue of the unit is obtained; Based on the level corresponding to the optimal peak shaving revenue of the unit, peak shaving is performed on the unit.

[0061] Embodiment 5 If the modules / units integrated in the electronic device 100 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, to implement all or part of the processes in the above-mentioned embodiment methods of the present invention, it can also be completed by a computer program instructing relevant hardware. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory and read-only memory (ROM, Read-Only Memory).

[0062] Those skilled in the art should understand that the embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can 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.

[0063] The present invention is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the processes and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0064] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce a manufacture including an instruction means that implements the functions specified in one or more of the processes and / or blocks Figure 1 in one or more of the processes and / or blocks Figure 1 specified in the function.

[0065] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one or more of the processes and / or blocks Figure 1 in one or more of the processes and / or blocks Figure 1 specified in the function.

[0066] 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 them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or equivalently replaced, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A method for deep peak shaving of a power plant unit, characterized in that It includes the following steps: Obtain the unit price of standard coal for unit procurement, and based on the unit price of standard coal for procurement, obtain the unit price of standard coal consumed when the unit participates in peak shaving; Obtain the benefits at different levels when the unit participates in peak shaving; Based on the unit price of standard coal consumed when the unit participates in peak shaving and the costs at different levels, obtain the benefits at different levels when the unit does not participate in peak shaving and when it participates in peak shaving; Based on the benefits at different levels when the unit does not participate in peak shaving and when it participates in peak shaving, obtain the level corresponding to the optimal peak shaving benefit of the unit; Based on the level corresponding to the optimal peak shaving benefit of the unit, perform peak shaving on the unit.

2. The method for deep peak shaving of a power plant unit according to claim 1, characterized in that The specific method for obtaining the unit price of standard coal for unit procurement and based on the unit price of standard coal for procurement to obtain the unit price of standard coal consumed when the unit participates in peak shaving is as follows: Among them, is the unit price of standard coal consumed when the unit participates in peak shaving, is the unit price of purchased standard coal, is the conversion coefficient.

3. A deep peak shaving method for a power plant unit according to claim 1, characterized in that The specific method for obtaining the benefits at different levels when the unit participates in peak shaving is as follows: Obtain the power generation benefits at different gears during the peak shaving of the unit M g , obtain service fees C as and share costs C aaf , according to the power generation benefits M g , obtain service fees C as and share costs Perform the following calculations to obtain the comprehensive benefits; 。 4. A deep peak shaving method for a power plant unit according to claim 3, characterized in that Power generation revenue M g The calculation method is as follows: Among them, P 65 is the power generation of different gears during the unit's peak shaving; is the marginal cost per kilowatt-hour of different gear powers during the unit's peak shaving; Obtain service fee C as The calculation method is as follows: Among them, F ss is the auxiliary service scale cost, ε p is the profit coefficient; Cost sharing is calculated as follows: Among them, is the sharing fee for the deep peak shaving service fee, is the thermal power generation.

5. A deep peak shaving method for a power plant unit according to claim 1, characterized in that, The specific method for obtaining the benefits at different levels when the unit does not participate in peak shaving and when it participates in peak shaving based on the unit price of standard coal consumed when the unit participates in peak shaving and the costs at different levels is as follows: Obtain the non-peak-shaving benefit of the unit, the non-peak-shaving assessment fee, the additional sharing fee per unit of electricity, and the additional sharing fee for non-peak-shaving increase; Based on the non-peak-shaving benefit of the unit, the non-peak-shaving assessment fee, the additional sharing fee per unit of electricity, and the additional sharing fee for non-peak-shaving increase, obtain the benefits at different levels when the unit does not participate in peak shaving.

6. A method for deep peak shaving of a power plant unit according to claim 5, characterized in that, The non-peak-shaving benefit is the benefit of the current unit; The calculation method of the non-peak-shaving assessment fee is as follows: Among them, is the peak shaving assessment fee not participated, is the peak shaving income obtainable for performance compliance, is the actual peak shaving income; The additional sharing fee per unit of electricity is a preset value; The additional sharing fee for non-peak-shaving increase is the sharing fee that needs to be borne for the increased on-grid electricity after non-peak-shaving.

7. A deep peak shaving method for a power plant unit according to claim 1, characterized in that The specific method for obtaining the level corresponding to the optimal peak shaving benefit of the unit based on the benefits at different levels when the unit does not participate in peak shaving and when it participates in peak shaving is as follows: Obtain the benefits at different levels when the unit does not participate in peak shaving and when it participates in peak shaving; Obtain the benefits at different levels when the unit participates in peak shaving and when it participates in peak shaving; When the peak-shaving benefit is higher than the non-peak-shaving benefit, choose to participate in peak shaving; when the peak-shaving benefit is lower than or equal to the non-peak-shaving benefit, choose not to participate in peak shaving.

8. A deep peak shaving system for a power plant unit, characterized in that, It includes: A peak-shaving unit price acquisition module for obtaining the unit price of standard coal for unit procurement and based on the unit price of standard coal for procurement to obtain the unit price of standard coal consumed when the unit participates in peak shaving; A benefit acquisition module for obtaining the benefits at different levels when the unit participates in peak shaving; A benefit calculation module for obtaining the benefits at different levels when the unit does not participate in peak shaving and when it participates in peak shaving based on the unit price of standard coal consumed when the unit participates in peak shaving and the costs at different levels; A level calculation module for obtaining the level corresponding to the optimal peak shaving benefit of the unit based on the benefits at different levels when the unit does not participate in peak shaving and when it participates in peak shaving; An adjustment module for performing peak shaving on the unit based on the level corresponding to the optimal peak shaving benefit of the unit.

9. An electronic device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of a deep peak shaving method for a power plant unit as described in any one of claims 1 to 7.

10. A storage medium, on which a computer program is stored, characterized in that, When the computer program is executed by the processor, it implements the steps of a deep peak shaving method for a power plant unit as described in any one of claims 1 to 7.

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