Method, system, device and medium for capacity configuration of amphibious power plant based on monthly balance

Abstract

This invention belongs to the field of power planning and new energy power generation. It discloses a method, system, equipment, and medium for configuring the capacity of an amphibious power plant based on monthly balance. Based on the load forecast of the amphibious power plant and the predicted new energy power generation during the hydropower peak and off-peak seasons, a monthly power balance analysis of the amphibious power plant is performed to obtain the power deficit for each power-deficient month and the power balance for each power-excessive month. Based on the power deficit for each power-deficient month, the required coal-fired power generation capacity to ensure power supply during each power-deficient month is determined, and the maximum value is selected to obtain the coal-fired power generation capacity of the amphibious power plant. Based on the power balance for each power-excessive month, the required energy storage capacity to ensure the complete consumption of abandoned new energy power during each power-excessive month is determined, and the maximum value is selected to obtain the energy storage capacity of the amphibious power plant. This achieves a reasonable determination of the coal-fired power generation capacity and the energy storage capacity of the amphibious power plant.

Description

Technical Field

[0001] This invention belongs to the field of power planning and new energy power generation, and relates to a method, system, equipment and medium for configuring the capacity of amphibious power plants based on monthly balance. Background Technology

[0002] Currently, with the increasing proportion of new energy sources, the mismatch between the characteristics of new energy and energy demand has made power supply security and new energy consumption two key issues that need to be addressed in the future. Power supply security, which is related to energy security, is particularly prominent. Looking at the lessons learned from accidents in high-proportion new energy systems, it can be seen that new energy sources, mainly photovoltaic and wind power, cannot completely replace conventional stable generating units, are unable to cope with extreme weather events, and exacerbate supply challenges during periods of system resource shortages.

[0003] For some regions that rely heavily on hydropower, seasonal imbalances have always existed due to the influence of wet and dry seasons. This is mainly manifested in the fact that hydropower generation is high during the summer wet season, resulting in a surplus of electricity, while hydropower generation drops sharply during the winter dry season, leading to a tight power supply. In the future, as the installed capacity of new energy sources further expands, new energy power generation will also have significant seasonal imbalances. In the spring and autumn, the high generation of new energy sources will lead to a large surplus of electricity, while in the winter, the combined constraints of low new energy generation and the dry season for hydropower will exacerbate the power shortage problem.

[0004] Currently, to address the issue of renewable energy integration, various energy storage strategies have been proposed. These strategies involve configuring energy storage devices of a certain capacity to store surplus renewable energy. Simultaneously, to cope with seasonal and extreme weather-related power shortages, renewable energy power plants typically require the construction of coal-fired power units of a certain capacity. The installed capacity of both energy storage devices and coal-fired power units is generally determined based on historical experience, often resulting in either being too large or too small. An excessively large energy storage capacity leads to increased costs, while an excessively small capacity fails to effectively address the renewable energy integration problem. Conversely, an excessively large coal-fired power unit capacity results in low utilization hours and low equipment utilization, leading to resource waste and higher costs. Conversely, an excessively small coal-fired power unit capacity fails to effectively address the seasonal and extreme weather-related power shortages. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, which makes it difficult to effectively determine the installed capacity of energy storage devices and coal-fired power plants, and to provide a method, system, equipment and medium for configuring the capacity of amphibious power plants based on monthly balance.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] In a first aspect, the present invention provides a method for configuring the capacity of an amphibious power plant based on monthly balance, comprising:

[0008] Based on the load forecast of the amphibious power plant and the forecast of new energy power generation during the wet and dry seasons of hydropower, the power balance analysis of the amphibious power plant is carried out monthly to obtain the power deficit of the amphibious power plant in each month of power shortage and the power balance of the amphibious power plant in each month of power surplus.

[0009] Based on the power shortage of the amphibious power plant in each month of power shortage, the required coal-fired power unit capacity to ensure power supply in each month of power shortage is obtained, and the maximum value among the coal-fired power unit capacities is selected to obtain the coal-fired power unit capacity of the amphibious power plant.

[0010] Based on the electricity balance of the amphibious power plant in each multi-month period, the installed capacity of the energy storage device that can guarantee the complete consumption of abandoned new energy in each multi-month period is obtained. The maximum value among the installed capacities of each energy storage device is selected to obtain the installed capacity of the energy storage device of the amphibious power plant.

[0011] Optionally, the amphibious power plant capacity configuration method based on monthly balance further includes:

[0012] Based on the electricity balance of the amphibious power plant in each multi-month period, the energy storage device conversion power that can guarantee the complete consumption of abandoned new energy in each multi-month period is obtained. The maximum value among the conversion powers of each energy storage device is selected to obtain the energy storage device conversion power of the amphibious power plant.

[0013] The selected energy storage device of the amphibious power plant has a conversion power obtained by the following formula:

[0014] p eh =Max(p eh1 p eh2 , ..., p ehi , ..., p ehN )

[0015] Where, p eh For the energy storage device conversion power of the amphibious power plant, p ehi Let N be the energy storage device conversion power that can guarantee the complete consumption of abandoned renewable energy in the i-th multi-electricity month of the amphibious power plant, and N be the number of multi-electricity months of the amphibious power plant.

[0016] p ehi =Q spi / h spi

[0017] Among them, Q spi h represents the electricity balance of the amphibious power plant in the i-th multi-electricity month. spi This represents the monthly power curtailment hours of the amphibious power plant in the i-th month of its peak power generation.

[0018] Optionally, the installed capacity of the coal-fired power units in the amphibious power plant is obtained by the following formula:

[0019] p g =Max(p g1 p g2 , ..., p gi , ..., p gM )

[0020] Where, p g For the coal-fired power unit capacity of the amphibious power plant, p gi Let M be the installed capacity of coal-fired power units required to ensure power supply for the amphibious power plant during the i-th month of power shortage, and M be the number of months of power shortage for the amphibious power plant.

[0021] p gi =Q sti / h sti

[0022] Among them, Q sti h represents the power deficit of the amphibious power plant in the i-th month of power shortage. sti Let be the number of hours of power shortage in the i-th month for the amphibious power plant.

[0023] Optionally, the installed capacity of the energy storage device in the amphibious power plant is obtained by the following formula:

[0024] Q s =Max(Q) s1 Q s2 Q gi Q sN )

[0025] Among them, Q s Q represents the installed capacity of the energy storage device in the amphibious power plant. gi N represents the installed capacity of energy storage devices that can ensure the complete consumption of abandoned renewable energy in the i-th multi-electricity month of the amphibious power plant, and N is the number of multi-electricity months of the amphibious power plant.

[0026] Q gi =Q spi η eh / d spi

[0027] Among them, Q spi Let d be the electricity balance of the amphibious power plant in the i-th multi-electricity month. spi Let η be the number of days of power curtailment in the i-th month of the amphibious power plant. eh The electrical conversion efficiency of the energy storage device.

[0028] A second aspect of the present invention provides an amphibious power plant capacity configuration system based on monthly balance, comprising:

[0029] The power balance analysis module is used to perform a monthly power balance analysis of the amphibious power plant based on the load forecast value of the amphibious power plant and the new energy power generation forecast value during the hydropower peak and off-peak seasons, so as to obtain the power deficit of the amphibious power plant in each month with power shortage and the power balance of the amphibious power plant in each month with power surplus.

[0030] The coal-fired power unit capacity determination module is used to determine the coal-fired power unit capacity required to ensure power supply in each month of power shortage at the amphibious power plant based on the power shortage of each month. The module then selects the maximum value among the coal-fired power unit capacities to obtain the coal-fired power unit capacity of the amphibious power plant.

[0031] The energy storage device installed capacity determination module is used to obtain the energy storage device installed capacity that can guarantee the complete consumption of new energy curtailment in each of the amphibious power plant's multi-month electricity balances, and select the maximum value among the energy storage device installed capacities to obtain the amphibious power plant's energy storage device installed capacity.

[0032] Optionally, the amphibious power plant capacity configuration system based on monthly balance also includes:

[0033] The energy storage device conversion power determination module is used to obtain the energy storage device conversion power that can guarantee the complete consumption of abandoned new energy in each of the multiple electricity months of the amphibious power plant, based on the electricity balance of each multiple electricity month. The maximum value among the conversion powers of each energy storage device is selected to obtain the energy storage device conversion power of the amphibious power plant.

[0034] Optionally, the installed capacity of the coal-fired power units in the amphibious power plant is obtained by the following formula:

[0035] p g =Max(p g1 p g2 , ..., p gi , ..., p gM )

[0036] Where, p g For the coal-fired power unit capacity of the amphibious power plant, p gi Let M be the installed capacity of coal-fired power units required to ensure power supply for the amphibious power plant during the i-th month of power shortage, and M be the number of months of power shortage for the amphibious power plant.

[0037] p gi =Q sti / h sti

[0038] Among them, Q sti h represents the power deficit of the amphibious power plant in the i-th month of power shortage. sti Let be the number of hours of power shortage per month in the i-th month when the amphibious power plant experiences power shortage.

[0039] The installed capacity of the energy storage device in the amphibious power plant is obtained by the following formula:

[0040] Q s =Max(Q) s1 Q s2 Q gi Q sN )

[0041] Among them, Q s Q represents the installed capacity of the energy storage device in the amphibious power plant. gi N represents the installed capacity of energy storage devices that can ensure the complete consumption of abandoned renewable energy in the i-th multi-electricity month of the amphibious power plant, and N is the number of multi-electricity months of the amphibious power plant.

[0042] Q gi =Q spi η eh / d spi

[0043] Among them, Q spi Let d be the electricity balance of the amphibious power plant in the i-th multi-electricity month. spi Let η be the number of days of power curtailment in the i-th month of the amphibious power plant. eh The electrical conversion efficiency of the energy storage device.

[0044] In a third aspect, the present invention provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the above-described amphibious power plant capacity configuration method based on monthly balance.

[0045] In a fourth aspect, the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the above-described amphibious power plant capacity configuration method based on monthly balance.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] This invention presents a monthly balanced capacity configuration method for amphibious power plants. By analyzing the power balance of the amphibious power plant monthly based on load forecasts and the predicted renewable energy generation during the hydropower off-peak and low-peak seasons, the accuracy of predicting the power deficit and surplus in each month with power shortages is significantly improved. Based on this, the required coal-fired power generation capacity to ensure power supply during months with power shortages and the required energy storage capacity to ensure the complete consumption of renewable energy during months with power surpluses are calculated. The maximum value among the coal-fired power generation capacities and the maximum value among the energy storage capacity capacities are selected as the total coal-fired power generation capacity and energy storage capacity of the amphibious power plant. This method ensures the reasonable determination of both the coal-fired power generation capacity and the energy storage capacity, guaranteeing that the determined capacity can ensure power supply during months with power shortages and the complete consumption of renewable energy during months with power surpluses. At the same time, it provides new solutions for the consumption of new energy sources and the guarantee of power supply in the new power system, provides a reference for the calculation of the construction scale of new coal-fired power and new energy storage in the region, and also has certain guiding significance for the optimized scheduling and operation of multi-energy complementary bases in the new power system. Attached Figure Description

[0048] Figure 1 This is a flowchart of the amphibious power plant capacity configuration method based on monthly balance according to an embodiment of the present invention.

[0049] Figure 2 This is a block diagram of the amphibious power plant capacity configuration system based on monthly balance, according to an embodiment of the present invention. Detailed Implementation

[0050] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0051] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0052] The present invention will now be described in further detail with reference to the accompanying drawings:

[0053] See Figure 1 In one embodiment of the present invention, a method for configuring the capacity of an amphibious power plant based on monthly balance is provided, comprising the following steps:

[0054] S1: Based on the load forecast and new energy power generation forecast of the amphibious power plant, combined with the hydropower generation forecast during the wet and dry seasons, conduct a monthly power balance analysis of the amphibious power plant to obtain the power deficit in each month of power shortage and the power balance in each month of power surplus of the amphibious power plant.

[0055] S2: Based on the power shortage of the amphibious power plant in each month of power shortage, obtain the coal-fired power unit capacity required to ensure power supply in each month of power shortage of the amphibious power plant, and select the maximum value among the coal-fired power unit capacities to obtain the coal-fired power unit capacity of the amphibious power plant.

[0056] S3: Based on the electricity balance of the amphibious power plant in each multi-month period, obtain the energy storage capacity that the amphibious power plant can guarantee the complete consumption of new energy curtailment in each multi-month period, and select the maximum value among the energy storage capacity to obtain the energy storage capacity of the amphibious power plant.

[0057] Specifically, the basic idea of ​​the amphibious power plant capacity configuration method based on monthly balance in this invention is as follows: First, based on the load forecast level and new energy development scale during the planning period of the amphibious power plant, combined with the power generation forecast during the wet and dry seasons of hydropower, a monthly power balance analysis is carried out; then, based on the power deficit in different power-deficient months, the installed capacity of coal-fired power units required to ensure power supply in the amphibious power plant is calculated and the maximum value is taken; finally, based on the power balance in different power-rich months and the distribution of new energy curtailment periods, the installed capacity of energy storage devices that can ensure the complete consumption of new energy curtailment is calculated and the maximum value is taken.

[0058] In summary, this invention, based on a monthly balance-based capacity configuration method for amphibious power plants, analyzes the power balance of the amphibious power plant monthly based on the load forecast and the predicted renewable energy generation during the hydropower peak and off-peak seasons. This effectively improves the accuracy of predicting the power deficit in each power-deficient month and the remaining power in each power-excess month. Then, based on this, it calculates the required coal-fired power generation capacity to ensure power supply during power-deficient months and the required energy storage capacity to ensure the complete consumption of renewable energy during power-excess months. The maximum value among the coal-fired power generation capacities and the maximum value among the energy storage capacity capacities are selected as the total coal-fired power generation capacity and energy storage capacity of the amphibious power plant. This ensures the reasonable determination of the coal-fired power generation capacity and energy storage capacity, guaranteeing that the determined capacity can ensure power supply during power-deficient months and ensure the complete consumption of renewable energy during power-excess months. At the same time, it provides new solutions for the consumption of new energy sources and the guarantee of power supply in the new power system, provides a reference for the calculation of the construction scale of new coal-fired power and new energy storage in the region, and also has certain guiding significance for the optimized scheduling and operation of multi-energy complementary bases in the new power system.

[0059] In one possible implementation, the specific process for determining the installed capacity of the coal-fired power units in the amphibious power plant is as follows:

[0060] (1) Based on the load forecast level and new energy development scale during the planning period, and combined with the hydropower generation forecast during the wet and dry seasons, conduct monthly power balance analysis to determine the power deficit Q for the months with power shortage. st1 Q stM M represents the number of months of power shortage at the amphibious power plant.

[0061] (2) Conduct full-time production simulation calculations of the power system and count the monthly power shortage hours (h) in months with power shortages. st1 , ......, h stM h stM This represents the monthly power shortage hours for the Mth month of power shortage at the amphibious power plant.

[0062] (3) Calculate the generator power p during the first month of power shortage. g1 :

[0063] p g1 =Q st1 / h st1

[0064] (4) Calculate the generator power p during the Mth month of power shortage. gN :

[0065] p gN =Q stN / h stN

[0066] (5) Determine the installed capacity of the coal-fired power units in the amphibious power plant:

[0067] p g =Max(p g1 p g2 , ..., p gi , ..., p gM )

[0068] Where, p g For the coal-fired power unit capacity of the amphibious power plant, p gi The coal-fired power plant capacity required to ensure power supply during the i-th month of power shortage at the amphibious power plant.

[0069] In one possible implementation, the specific process for determining the installed capacity of the energy storage device in the amphibious power plant is as follows:

[0070] (1) Based on the load forecast level and the scale of new energy development during the planning period, and combined with the hydropower generation forecast during the wet and dry seasons, conduct monthly power balance analysis to determine the power surplus Q in months with high power generation. sp1 Q spN N represents the number of months with multiple power generation at the amphibious power plant.

[0071] (2) Conduct full-time power system production simulation calculations and count the number of days of power curtailment (d) in months with high power consumption. sp1 , ......, d spN d spN This represents the number of days of power curtailment per month for the Nth month of the amphibious power plant.

[0072] (3) Calculate the installed capacity Q of the energy storage device in the first multi-electric month. s1 :

[0073] Q s1 =Q sp1 η eh / d sp1

[0074] In the formula, η eh The electrical conversion efficiency of the energy storage device;

[0075] (4) Calculate the installed capacity Q of the energy storage device in the month with the most electricity. sN :

[0076] Q sN =Q spN η eh / d spN

[0077] In the formula, η eh This refers to the efficiency of the electro-thermal conversion.

[0078] (5) Determine the capacity of the molten salt thermal storage tank for the amphibious power plant:

[0079] Q s =Max(Q) s1 Q s2 Q gi Q sN )

[0080] Among them, Q s Q represents the installed capacity of the energy storage device in the amphibious power plant. gi The installed capacity of the energy storage device that can ensure the complete consumption of abandoned renewable energy in the i-th multi-electricity month of the amphibious power plant.

[0081] In one possible implementation, the amphibious power plant capacity configuration method based on monthly balance further includes: obtaining the energy storage device conversion power that can guarantee the complete consumption of new energy curtailment in each of the amphibious power plant's multiple electricity months based on the electricity balance of the amphibious power plant in each of the multiple electricity months; selecting the maximum value among the energy storage device conversion powers to obtain the energy storage device conversion power of the amphibious power plant.

[0082] In one possible implementation, the specific process for determining the conversion power of the energy storage device in the amphibious power plant is as follows:

[0083] (1) Based on the load forecast level and the scale of new energy development during the planning period, and combined with the hydropower generation forecast during the wet and dry seasons, conduct monthly power balance analysis to determine the power surplus Q in months with high power generation. sp1 Q spN N represents the number of months with multiple power generation at the amphibious power plant.

[0084] (2) Conduct full-time production simulation calculations of the power system and count the monthly abandoned power hours (h) in months with high power consumption. sp1 ,.....,h spN h spN This represents the monthly power curtailment hours for the Nth multi-power month at the amphibious power plant.

[0085] (3) Calculate the energy storage device conversion power p in the first multi-electric month. eh1 :

[0086] p eh1 =Q sp1 / h sp1

[0087] (4) Calculate the energy storage device conversion power p in the Nth multi-electric month. ehN :

[0088] p ehN =Q spN / h spN

[0089] (5) Determine the energy storage conversion power of the amphibious power plant:

[0090] p eh =Max(p eh1 p eh2 , ..., p ehi , ..., p ehN )

[0091] Where, p eh For the energy storage device conversion power of the amphibious power plant, p ehi The conversion power of the energy storage device is required to ensure the complete consumption of abandoned renewable energy in the i-th multi-electricity month of the amphibious power plant.

[0092] In one possible implementation, the energy storage device of the amphibious power plant is a molten salt thermal storage tank, which uses an electric heater to convert electrical energy into thermal energy, and the conversion power of the energy storage device is the power of the electric heater.

[0093] In one possible implementation, a simulation case study is used to specifically analyze the amphibious power plant capacity configuration method based on monthly balance of the present invention, so as to further illustrate the application effect of the present invention.

[0094] The example system is a power grid in a certain region. Currently, the installed capacity and power generation of new energy and hydropower in this region have reached about 90%. During the planning period, the total electricity consumption of the region will reach about 100 billion kWh, of which hydropower can provide 36 billion kWh based on the average hydrological data over many years, thermal power can provide 5 billion kWh, and new energy can provide about 59 billion kWh. The annual electricity consumption is basically balanced.

[0095] Referring to Table 1, the monthly electricity balance results for this region show that, due to the uneven seasonal distribution of renewable resources (hydropower, wind power, and solar power), there is a seasonal electricity imbalance. Spring and autumn see high renewable energy generation, while summer sees high hydropower generation, resulting in excess power from March to September, with a seasonal electricity surplus of 4.8 billion kWh. September has the largest surplus, approximately 1 billion kWh, due to the combined effects of high renewable energy and hydropower generation. Winter has a higher load, with power shortages in November, December, and January, resulting in a seasonal electricity deficit of 4.8 billion kWh. December has the largest deficit, approximately 2.4 billion kWh, due to the highest load and the lowest hydropower and renewable energy generation.

[0096] To address the aforementioned issues, the region could plan and construct a dual-capacity power plant. During winter, it could serve as a coal-fired power plant to ensure power supply, while in other seasons it could function as an energy storage plant to reduce the curtailment of renewable energy. Preliminary analysis indicates that the coal-fired power generation capacity constructed in December is the largest, with a power deficit of approximately 2.4 billion kWh and a monthly power shortage of 560 hours, requiring approximately 4 million kW of new coal-fired power generation capacity. The molten salt thermal storage tanks and electric heaters constructed in September have the largest capacity, with a power surplus of approximately 1 billion kWh, and a monthly curtailment of 30 days and 300 hours. Therefore, a molten salt thermal storage tank capacity of approximately 30 million kWh and an electric heater power of approximately 3 million kW are needed.

[0097] Table 1

[0098]

[0099]

[0100] The following are embodiments of the apparatus of the present invention, which can be used to execute embodiments of the method of the present invention. For details not disclosed in the apparatus embodiments, please refer to the embodiments of the method of the present invention.

[0101] See Figure 2 In another embodiment of the present invention, a capacity configuration system for amphibious power plants based on monthly balance is provided, which can be used to implement the above-mentioned capacity configuration method for amphibious power plants based on monthly balance. Specifically, the capacity configuration system for amphibious power plants based on monthly balance includes a power balance analysis module, a coal-fired power unit capacity determination module, and an energy storage device capacity determination module. The power balance analysis module is used to perform monthly power balance analysis on the amphibious power plant based on the load forecast and the new energy power generation forecast during the hydropower peak and off-peak seasons. This analysis yields the power deficit for each month with power shortage and the power balance for each month with abundant power. The coal-fired power unit capacity determination module is used to determine the required coal-fired power unit capacity to ensure power supply during each month with power shortage based on the power deficit, and selects the maximum value among these capacity values ​​to obtain the total coal-fired power unit capacity of the amphibious power plant. The energy storage device capacity determination module is used to determine the required energy storage device capacity to ensure the complete consumption of new energy curtailment during each month with abundant power based on the power balance, and selects the maximum value among these capacity values ​​to obtain the total energy storage device capacity of the amphibious power plant.

[0102] In one possible implementation, the amphibious power plant capacity configuration method based on monthly balance further includes: obtaining the energy storage device conversion power that can guarantee the complete consumption of new energy curtailment in each of the amphibious power plant's multiple electricity months based on the electricity balance of the amphibious power plant in each of the multiple electricity months; selecting the maximum value among the energy storage device conversion powers to obtain the energy storage device conversion power of the amphibious power plant.

[0103] In one possible implementation, the energy storage device conversion power of the amphibious power plant is obtained by the following formula:

[0104] p eh =Max(p eh1 p eh2 , ..., p ehi , ..., p ehN )

[0105] Where, p eh For the energy storage device conversion power of the amphibious power plant, p ehi Let N be the energy storage device conversion power that can guarantee the complete consumption of abandoned renewable energy in the i-th multi-electricity month of the amphibious power plant, and N be the number of multi-electricity months of the amphibious power plant.

[0106] p ehi =Q spi / h spi

[0107] Among them, Q spi h represents the electricity balance of the amphibious power plant in the i-th multi-electricity month. spi This represents the monthly power curtailment hours of the amphibious power plant in the i-th month of its peak power generation.

[0108] In one possible implementation, the coal-fired power plant's installed capacity is obtained by the following formula:

[0109] p g =Max(p g1 p g2 , ..., p gi , ..., p gM )

[0110] Where, p g For the coal-fired power unit capacity of the amphibious power plant, p gi Let M be the installed capacity of coal-fired power units required to ensure power supply for the amphibious power plant during the i-th month of power shortage, and M be the number of months of power shortage for the amphibious power plant.

[0111] p gi =Q sti / h sti

[0112] Among them, Q sti h represents the power deficit of the amphibious power plant in the i-th month of power shortage. sti Let be the number of hours of power shortage in the i-th month for the amphibious power plant.

[0113] In one possible implementation, the installed capacity of the energy storage device of the amphibious power plant is obtained by the following formula:

[0114] Qs =Max(Q) s1 Q s2 Q gi Q sN )

[0115] Among them, Q s Q represents the installed capacity of the energy storage device in the amphibious power plant. gi N represents the installed capacity of energy storage devices that can ensure the complete consumption of abandoned renewable energy in the i-th multi-electricity month of the amphibious power plant, and N is the number of multi-electricity months of the amphibious power plant.

[0116] Q gi =Q spi η eh / d spi

[0117] Among them, Q spi Let d be the electricity balance of the amphibious power plant in the i-th multi-electricity month. spi Let η be the number of days of power curtailment in the i-th month of the amphibious power plant. eh The electrical conversion efficiency of the energy storage device.

[0118] All relevant content of each step involved in the aforementioned embodiments of the amphibious power plant capacity configuration method based on monthly balance can be referenced to the functional description of the corresponding functional module of the amphibious power plant capacity configuration system based on monthly balance in the embodiments of the present invention, and will not be repeated here.

[0119] The module division in this embodiment of the invention is illustrative and represents only one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the invention can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0120] In another embodiment of the present invention, a computer device is provided, comprising a processor and a memory. The memory stores a computer program, which includes program instructions. The processor executes the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or 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. It is the computing and control core of the terminal, suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions in the computer storage medium to achieve a corresponding method flow or corresponding function. The processor described in this embodiment of the present invention can be used for the operation of a monthly balanced amphibious power plant capacity configuration method.

[0121] In another embodiment of the present invention, a storage medium is provided, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and extended storage media supported by the computer device. The computer-readable storage medium provides storage space that stores the operating system of the terminal. Furthermore, the storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be high-speed RAM or non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the corresponding steps of the amphibious power plant capacity configuration method based on monthly balance in the above embodiments.

[0122] Those skilled in the art will understand that 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 completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied 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.

[0123] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0124] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0125] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0126] 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, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do 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 configuring the capacity of an amphibious power plant based on monthly balance, characterized in that, include: Based on the load forecast of the amphibious power plant and the forecast of new energy power generation during the wet and dry seasons of hydropower, the power balance analysis of the amphibious power plant is carried out monthly to obtain the power deficit of the amphibious power plant in each month of power shortage and the power balance of the amphibious power plant in each month of power surplus. Based on the power shortage of the amphibious power plant in each month of power shortage, the required coal-fired power unit capacity to ensure power supply in each month of power shortage is obtained, and the maximum value among the coal-fired power unit capacities is selected to obtain the coal-fired power unit capacity of the amphibious power plant. Based on the electricity balance of the amphibious power plant in each multi-month period, the installed capacity of the energy storage device that can guarantee the complete consumption of the abandoned new energy in each multi-month period is obtained. The maximum value among the installed capacities of each energy storage device is selected to obtain the installed capacity of the energy storage device of the amphibious power plant. The amphibious power plant capacity configuration method based on monthly balance also includes: Based on the electricity balance of the amphibious power plant in each multi-month period, the conversion power of the energy storage device that can guarantee the complete consumption of the abandoned new energy in each multi-month period is obtained. The maximum value among the conversion power of each energy storage device is selected to obtain the conversion power of the energy storage device of the amphibious power plant. The energy storage device conversion power of the amphibious power plant is obtained by the following formula: in, To convert the power of the energy storage device in the amphibious power plant. For the amphibious power plant i The energy storage device's conversion power can guarantee the complete consumption of abandoned renewable energy in more than a month. The number of months with more electricity generated by the amphibious power plant; = in, For the amphibious power plant i The remaining electricity consumption over several months, For the amphibious power plant i Monthly abandoned hours in multiple electricity-consuming months; The installed capacity of the coal-fired power units in the amphibious power plant is obtained by the following formula: in, For the coal-fired power unit capacity of the amphibious power plant, For the amphibious power plant i The coal-fired power unit capacity required to ensure power supply during the months of power shortage. The number of months with power shortages at the amphibious power plant; in, For the amphibious power plant i Electricity deficit in each month with power shortage For the amphibious power plant i Monthly power outage hours for each month experiencing power shortages; The installed capacity of the energy storage device in the amphibious power plant is obtained by the following formula: in, The installed capacity of energy storage devices for amphibious power plants, For the amphibious power plant i The installed capacity of energy storage devices can guarantee the complete consumption of abandoned renewable energy in more than a month. The number of months with more electricity generated by the amphibious power plant; in, For the amphibious power plant i The remaining electricity consumption over several months, For the amphibious power plant i The number of days of power curtailment per month in more than one month. The electrical conversion efficiency of the energy storage device.

2. A capacity configuration system for amphibious power plants based on monthly balance, characterized in that, include: The power balance analysis module is used to perform a monthly power balance analysis of the amphibious power plant based on the load forecast value of the amphibious power plant and the new energy power generation forecast value during the hydropower peak and off-peak seasons, so as to obtain the power deficit of the amphibious power plant in each month with power shortage and the power balance of the amphibious power plant in each month with power surplus. The coal-fired power unit capacity determination module is used to determine the coal-fired power unit capacity required to ensure power supply in each month of power shortage at the amphibious power plant based on the power shortage of each month. The module then selects the maximum value among the coal-fired power unit capacities to obtain the coal-fired power unit capacity of the amphibious power plant. The energy storage device installed capacity determination module is used to obtain the energy storage device installed capacity that can guarantee the complete consumption of new energy curtailment in each of the amphibious power plant's multi-month electricity balances, and select the maximum value among the energy storage device installed capacities to obtain the energy storage device installed capacity of the amphibious power plant. The amphibious power plant capacity configuration system based on monthly balance also includes: The energy storage device conversion power determination module is used to obtain the energy storage device conversion power that can guarantee the complete consumption of new energy curtailment in each of the multiple electricity months of the amphibious power plant based on the electricity balance of each multiple electricity month. The maximum value among the conversion power of each energy storage device is selected to obtain the energy storage device conversion power of the amphibious power plant. The installed capacity of the coal-fired power units in the amphibious power plant is obtained by the following formula: in, For the coal-fired power unit capacity of the amphibious power plant, For the amphibious power plant i The coal-fired power unit capacity required to ensure power supply during the months of power shortage. The number of months with power shortages at the amphibious power plant; in, For the amphibious power plant i Electricity deficit in each month with power shortage For the amphibious power plant i Monthly power outage hours for each month experiencing power shortages; The installed capacity of the energy storage device in the amphibious power plant is obtained by the following formula: in, The installed capacity of energy storage devices for amphibious power plants, For the amphibious power plant i The installed capacity of energy storage devices can guarantee the complete consumption of abandoned renewable energy in more than a month. The number of months with more electricity generated by the amphibious power plant; in, For the amphibious power plant i The remaining electricity consumption over several months, For the amphibious power plant i The number of days of power curtailment per month in more than one month. The electrical conversion efficiency of the energy storage device.

3. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the amphibious power plant capacity configuration method based on monthly balance as described in claim 1.

4. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the amphibious power plant capacity configuration method based on monthly balance as described in claim 1.

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