A clean energy base water-light complementary dispatching chart application method

Abstract

The application discloses a kind of clean energy base water-light complementary dispatching chart application methods, comprising: water-light complementary dispatching chart is divided into two kinds of sub-dispatching charts according to the runoff guarantee rate and critical guarantee rate of dispatching period, each sub-dispatching chart is divided into different dispatching regions by dispatching line, and each dispatching region has water and electricity output information;Predict the runoff and photovoltaic predicted output of dispatching period, select the corresponding sub-dispatching chart according to the runoff guarantee rate, determine the current month reservoir water and electricity output according to the current month reservoir initial water level and the dispatching region, obtain the current month reservoir end water level by runoff calculation;Until the calculation of reservoir water and electricity output and water level of all months in dispatching period is completed, obtain the long-term water and electricity output process and reservoir water level process in clean energy base, and calculate the guarantee rate of water and electricity generation, and the dispatching is completed.The application considers the grid-connected consumption of photovoltaic power in the process of reservoir dispatching, and improves the consumption level of photovoltaic power on the basis of guaranteeing water and electricity output.

Description

Technical Field

[0001] This invention relates to hydro-solar hybrid power generation technology, and in particular to a method for applying a hydro-solar hybrid scheduling diagram in a clean energy base. Background Technology

[0002] With the transformation of energy and power systems towards clean and efficient operation, clean energy bases with multi-energy hybrid complementary systems as their application scenario have broad development prospects. Taking hydro-solar complementary power generation as an example, due to the large-scale access of photovoltaic power, the traditional single dispatch mode of conventional dispatching diagrams can no longer meet the dispatching and operation requirements of hydro-solar complementary power generation. For example, during the rapid rise of reservoir water levels in the flood season, conventional dispatching diagrams will guide reservoirs to increase hydropower output. However, this will severely squeeze the grid connection space of photovoltaic power transmission channels, causing a squeeze on hydropower and photovoltaic power transmission channels, which in turn leads to a large amount of power curtailment, adversely affecting the utilization and development of clean energy. How to propose a more comprehensive hydro-solar complementary dispatching diagram application strategy is the key technology to solve the above problems. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide a method for applying a water-solar hybrid scheduling diagram in a clean energy base, which takes into account the grid connection and consumption of photovoltaic power during reservoir scheduling.

[0004] Technical solution: The present invention provides a method for applying a water-solar hybrid scheduling map in a clean energy base, comprising the following steps:

[0005] S1. The hydro-solar hybrid scheduling map is divided into two sub-scheduling maps based on the runoff guarantee rate and critical guarantee rate of the scheduling cycle: the conventional scheduling map and the hydro-solar hybrid scheduling map. Each sub-scheduling map is divided into different scheduling areas by the scheduling line, and each scheduling area has hydropower output information.

[0006] S2. Predict the runoff and photovoltaic power output for the scheduling cycle, and calculate the runoff guarantee rate. If the runoff guarantee rate is less than the critical guarantee rate, select the corresponding sub-scheduling diagram as the regular scheduling diagram. Determine the hydropower output of the reservoir for the current month based on the reservoir's water level at the beginning of the month and the scheduling area it is located in. Obtain the reservoir's water level at the end of the month through runoff calculation, and then proceed to step S5. If the runoff guarantee rate is greater than or equal to the critical guarantee rate, proceed to step S3.

[0007] S3. Select the sub-scheduling diagram corresponding to the runoff guarantee rate as the hydropower-solar hybrid scheduling diagram. Calculate the predicted critical output for the current month based on the predicted photovoltaic output for the current month, and determine whether the current month is in the flood season. If it is the flood season, the hydropower output in the critical output area is taken as the predicted critical output; if it is not the flood season, the hydropower output in the critical output area is taken as the guaranteed output.

[0008] S4. Based on the reservoir's water level at the beginning of the month and its location within the dispatch area, determine the reservoir's hydropower output for the current month, and obtain the reservoir's water level at the end of the month through runoff calculation;

[0009] S5. Determine whether the scheduling cycle has ended. If yes, proceed to step S6; otherwise, return to step S2 and calculate the reservoir's hydropower output and water level for the next month within the scheduling cycle.

[0010] S6. Obtain the long-term hydropower output process, reservoir water level process, and hydropower generation guarantee rate in the clean energy base, and complete the dispatch.

[0011] Furthermore, the critical guarantee rate in step S1 is specifically as follows:

[0012] The runoff guarantee rate for multiple scheduling cycles is calculated based on runoff data to form a runoff guarantee rate set. The multiple scheduling cycles and their corresponding runoff data are then sorted in ascending order based on the runoff guarantee rate.

[0013] By importing typical annual photovoltaic power output data, an optimized scheduling model is established. With the goal of maximizing the combined power consumption of water and photovoltaic, optimized scheduling calculations are performed for multiple scheduling cycles. The power wasted in multiple scheduling cycles during this process is recorded. The power wasted in multiple scheduling cycles is screened in combination with the runoff guarantee rate set until there is no power wasted in all scheduling cycles after a certain scheduling cycle. The runoff guarantee rate corresponding to this scheduling cycle is the critical guarantee rate.

[0014] Furthermore, the objective function for optimizing the scheduling model is:

[0015]

[0016] In the formula, W represents the total electricity consumed by water and solar power during the scheduling cycle; This represents the amount of hydropower consumed in the m-th month. The amount of electricity consumed by photovoltaic power in the mth month; This refers to the amount of electricity wasted in month m.

[0017] The calculation of the amount of power abandoned during the scheduling cycle is as follows:

[0018]

[0019]

[0020]

[0021]

[0022] In the formula, W q The amount of electricity wasted during the scheduling cycle; This is the hydropower output data for month m. For the 24-hour photovoltaic power output data of month m; N c This represents the maximum load on the power transmission channel. G represents the upper limit of hydropower output in month m; m This represents the total output exceeding the maximum load of the transmission channel in the m-th month due to the combined hydro-solar power output; F m This indicates the maximum output capacity that can be freed up for photovoltaic power generation in month m, while keeping the total hydropower output constant.

[0023] The constraint function for optimizing the scheduling model is:

[0024] Water balance constraints, reservoir water level constraints, power generation flow constraints, outflow constraints, reservoir output constraints, and variable non-negativity constraints.

[0025] Furthermore, the dispatch lines, dispatch areas, and hydropower output information of the conventional dispatch diagram in step S1 are as follows:

[0026] Extract the i scheduling cycles where the runoff guarantee rate is less than the critical guarantee rate. These i scheduling cycles form the power curtailment scheduling cycle set. With the goal of maximizing the amount of hydropower consumed, optimize the scheduling calculation to obtain the month of full storage, and then obtain the water storage process line. Continue until the water storage process line of the power curtailment scheduling cycle set during the flood season is calculated, and obtain the water storage process line set of the power curtailment scheduling cycle set. Take the upper and lower envelopes of the water storage process line set to obtain the upper and lower basic scheduling lines during the flood season. Replace the upper basic scheduling line with the water curtailment prevention line.

[0027] Extract runoff data of the abandoned power dispatch cycle set during the dry season. Start the dispatch from the water level at the end of the dry season and perform reverse time-series fixed output calculation according to the guaranteed output until the beginning of the dry season to obtain the water supply process line. After all the water supply process lines of the abandoned power dispatch cycle set during the dry season are calculated, the water supply process line set of the abandoned power dispatch cycle set is obtained. Take the upper and lower envelopes of the water supply process line set to obtain the upper and lower basic dispatch lines during the dry season.

[0028] By combining the water storage process line set during the flood season and the water supply process line set during the dry season of the curtailment dispatch cycle, the upper and lower basic dispatch lines of the dispatch cycle are obtained. Based on the upper and lower basic dispatch lines, the conventional dispatch map is divided from top to bottom into the hydropower increased output zone, the hydropower guaranteed output zone, and the hydropower reduced output zone.

[0029] If the water level is higher than the upper basic dispatch line during the current dispatch period, the hydropower output will be increased. If the water level is lower than the upper basic dispatch line during the current dispatch period, the hydropower output will be reduced. If the water level is between the upper and lower basic dispatch lines during the current dispatch period, the hydropower output will be guaranteed.

[0030] Furthermore, the scheduling lines, scheduling areas, and hydropower output information of the hydro-solar hybrid scheduling diagram in step S1 are as follows:

[0031] Extract j scheduling cycles where the runoff guarantee rate is greater than the critical guarantee rate. Divide these j scheduling cycles into k groups based on the runoff guarantee rate, forming k complementary scheduling cycle sets. Each complementary scheduling cycle set contains multiple scheduling cycles. The information of the i-th complementary scheduling cycle set is as follows:

[0032] (1) With the goal of maximizing the amount of hydropower consumed, the month of full storage is obtained through optimized scheduling calculation. At the end of the month of full storage, the critical output data is used to perform reverse time-series fixed output calculation until the fixed output calculation is performed for each time period. Then, the water storage process line is obtained until the water storage process line of the complementary scheduling cycle set during the flood season is calculated. The water storage process line set of the complementary scheduling cycle set is obtained. The upper and lower envelope lines of the water storage process line set are taken to obtain the upper and lower basic scheduling lines during the flood season. The upper basic scheduling line is replaced with the water abandonment prevention line.

[0033] (2) Extract the runoff data of the complementary scheduling cycle set during the dry season. Start the scheduling from the water level at the end of the dry season and perform reverse time-series fixed output calculation according to the guaranteed output until the beginning of the dry season to obtain the water supply process line. Until the water supply process line of the complementary scheduling cycle set during the dry season is calculated, the water supply process line set of the complementary scheduling cycle set is obtained. Take the upper and lower envelope lines of the water supply process line set to obtain the upper and lower basic scheduling lines during the dry season.

[0034] (3) By combining the water storage process line set of the complementary scheduling cycle set during the flood season and the water supply process line set during the dry season, the upper and lower basic scheduling lines of the scheduling cycle are obtained. Based on the upper and lower basic scheduling lines, the hydropower scheduling diagram is divided into the hydropower increased output zone, the hydropower critical output zone, and the hydropower reduced output zone from top to bottom.

[0035] (4) When the water level during the current scheduling period is higher than the upper basic scheduling line, the hydropower output is increased; when the water level during the current scheduling period is lower than the upper basic scheduling line, the hydropower output is reduced; when the water level during the current scheduling period is between the upper and lower basic scheduling lines, the hydropower output is the predicted critical output.

[0036] (5) Obtain the information of the i-th complementary scheduling cycle set, return to step (1), and continue until the information of k complementary scheduling cycle sets is obtained to complete the calculation.

[0037] Furthermore, the critical output data is calculated as follows:

[0038] exist G m =F m ;

[0039] in, This is the hydropower output data for month m. For critical output data; G m This represents the total output exceeding the maximum load of the transmission channel in the m-th month due to the combined hydro-solar power output; Fm This indicates the maximum output capacity that can be freed up for photovoltaic power generation in month m, while keeping the total hydropower output constant.

[0040] The critical output is calculated as follows:

[0041]

[0042]

[0043] exist Make

[0044] in, To predict critical output; Forecast power output for the 24-hour photovoltaic power generation in month m; This represents the total output exceeding the maximum load of the transmission channel in the predicted m-th month due to the combined hydro-solar power output. This indicates the maximum output capacity that can be freed up for photovoltaic power generation in the predicted month m, assuming the total hydropower output remains constant.

[0045] Furthermore, when the reservoir scheduling period is during the flood season, the hydropower output information for the increased output area is the predicted critical output for the current month multiplied by the increased ratio factor, where the increased ratio factor is a constant; the hydropower output information for the decreased output area is the predicted critical output for the current month multiplied by the decreased ratio factor, where the decreased ratio factor is a constant.

[0046] When the reservoir scheduling period is during the dry season, the hydropower output information of the increased output area is the hydropower guaranteed output for the current month multiplied by the increased ratio factor, which is a constant; the hydropower output information of the decreased output area is the hydropower guaranteed output for the current month multiplied by the decreased ratio factor, which is a constant.

[0047] Furthermore, the formula for calculating the hydropower generation guarantee rate in step S6 is:

[0048] P = M / 12

[0049] Where M represents the number of months in which the hydropower output of the reservoir is not less than the guaranteed hydropower output under the guidance of the hydropower-solar complementary scheduling method.

[0050] The present invention provides a clean energy base hydro-solar hybrid scheduling map application system, comprising:

[0051] The hydro-solar hybrid scheduling map division module is used to divide the hydro-solar hybrid scheduling map into two types of sub-scheduling maps according to the runoff guarantee rate and critical guarantee rate of the scheduling cycle. Each sub-scheduling map is divided into different scheduling areas by the scheduling line, and each scheduling area has hydropower output information.

[0052] The sub-scheduling diagram selection module is used to predict the runoff and photovoltaic power output during the scheduling cycle, calculate the runoff guarantee rate, and select the corresponding sub-scheduling diagram based on the runoff guarantee rate.

[0053] The scheduling module is used for the scheduling application of the hydro-solar hybrid scheduling map. If the selected sub-scheduling map is a conventional scheduling map, the hydropower output of the reservoir in the current month is determined based on the reservoir's water level at the beginning of the month and its location within the scheduling area. The water level at the end of the current month is obtained through runoff calculation. If the selected sub-scheduling map is a hydro-solar hybrid scheduling map, the predicted critical output for the current month is calculated based on the predicted photovoltaic output for the current month. It is then determined whether the current month is in the flood season. If it is the flood season, the hydropower output in the critical output area is taken as the predicted critical output. If it is not the flood season, the hydropower output in the critical output area is taken as the guaranteed output. The module also determines the hydropower output of the reservoir in the current month based on the reservoir's water level at the beginning of the month and its location within the scheduling area. The water level at the end of the current month is obtained through runoff calculation. This process continues until the calculation of reservoir hydropower output and water level for all months within the scheduling cycle is completed. This yields the long-term hydropower output process and reservoir water level process in the clean energy base, and the hydropower generation guarantee rate is obtained, thus completing the scheduling process.

[0054] An apparatus of the present invention includes a memory and a processor, wherein:

[0055] Memory is used to store computer programs that can run on a processor;

[0056] The processor is used to execute the steps of the above-described method for applying a water-solar hybrid scheduling diagram in a clean energy base when running the computer program.

[0057] Beneficial effects: Compared with the prior art, the present invention firstly divides the hydro-solar complementary scheduling map into two sub-scheduling maps: a conventional scheduling map and a hydro-solar complementary scheduling map, based on the runoff guarantee rate and critical guarantee rate of the scheduling cycle. Each sub-scheduling map is divided into different scheduling areas by the scheduling line, and each scheduling area has hydropower output information, which is more conducive to dealing with various reservoir inflow conditions. Secondly, by introducing the critical output of hydropower to consider the grid connection and consumption of photovoltaic power, it is more conducive to hydropower giving up transmission channel space for photovoltaic grid connection during the flood season, thereby improving the consumption level of photovoltaic power while ensuring hydropower output. Attached Figure Description

[0058] Figure 1 This is a flowchart of the application method of the present invention;

[0059] Figure 2 It is a sub-scheduling diagram in the water-solar hybrid scheduling diagram;

[0060] Figure 3 It refers to the reservoir runoff process within the scheduling cycle;

[0061] Figure 4It refers to the process of hydropower output from the reservoir during the scheduling cycle;

[0062] Figure 5 It refers to the process of reservoir water level during the scheduling cycle. Detailed Implementation

[0063] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0064] This invention provides a method for applying a water-solar hybrid scheduling map to a clean energy base. The scheduling cycle for the clean energy base is set to an annual period, and the scheduling time period is set to a monthly period. The scheduling cycle and scheduling time period can be set in conjunction with engineering scheduling requirements, such as... Figure 1 As shown, the application method includes the following steps:

[0065] S1. The hydro-solar hybrid scheduling map is divided into two sub-scheduling maps based on the runoff guarantee rate and critical guarantee rate of the scheduling cycle: the conventional scheduling map and the hydro-solar hybrid scheduling map. When the runoff guarantee rate is less than the critical guarantee rate, the sub-scheduling map is the conventional scheduling map; when the runoff guarantee rate is greater than the critical guarantee rate, the sub-scheduling map is the hydro-solar hybrid scheduling map. Each sub-scheduling map is divided into different scheduling areas by the scheduling line, and each scheduling area has hydropower output information.

[0066] The critical guarantee rate is as follows:

[0067] The runoff guarantee rate for multiple scheduling cycles is calculated based on runoff data, forming a runoff guarantee rate set. The multiple scheduling cycles and their corresponding runoff data are sorted in ascending order based on the runoff guarantee rate. Typical annual photovoltaic power output data is imported to establish an optimized scheduling model. With the goal of maximizing the combined power consumption of water and photovoltaic power, optimized scheduling calculations are performed for multiple scheduling cycles. The power wasted in multiple scheduling cycles during this process is recorded. The power wasted in multiple scheduling cycles is filtered in combination with the runoff guarantee rate set until there is no power wasted in all scheduling cycles after a certain scheduling cycle. The runoff guarantee rate corresponding to this scheduling cycle is the critical guarantee rate.

[0068] The objective function for optimizing the scheduling model is:

[0069]

[0070] In the formula, W represents the total electricity consumed by water and solar power during the scheduling cycle; This represents the amount of hydropower consumed in the m-th month. The amount of electricity consumed by photovoltaic power in the mth month; This refers to the amount of electricity wasted in month m.

[0071] The calculation of the amount of power abandoned during the scheduling cycle is as follows:

[0072]

[0073]

[0074]

[0075]

[0076] In the formula, W q The amount of electricity wasted during the scheduling cycle; This is the hydropower output data for month m. For the 24-hour photovoltaic power output data of month m; N c This represents the maximum load on the power transmission channel. G represents the upper limit of hydropower output in month m; m This represents the total output exceeding the maximum load of the transmission channel in the m-th month due to the combined hydro-solar power output; F m This indicates the maximum output capacity that can be freed up for photovoltaic power generation in month m, while keeping the total hydropower output constant.

[0077] The constraint function for optimizing the scheduling model is:

[0078] Water balance constraints, reservoir water level constraints, power generation flow constraints, downstream flow constraints, reservoir output constraints, and variable non-negativity constraints are all included. The specific constraints are determined in conjunction with the characteristics of the engineering scheduling. The key constraint information in this embodiment is shown in Table 1.

[0079] Table 1 Constraint Information

[0080]

[0081] Based on the above calculations, the critical guarantee rate in this embodiment is 50%, which means that when the runoff guarantee rate of the scheduling cycle is less than 50%, power curtailment will also occur under deterministic hydro-solar complementary optimal scheduling, and vice versa.

[0082] The dispatch lines, dispatch areas, and hydropower output information in a standard dispatching diagram are as follows:

[0083] Extract the i scheduling cycles where the runoff guarantee rate is less than the critical guarantee rate. These i scheduling cycles form the power curtailment scheduling cycle set. With the goal of maximizing the amount of hydropower consumed, optimize the scheduling calculation to obtain the month of full storage, and then obtain the water storage process line. Continue until the water storage process line of the power curtailment scheduling cycle set during the flood season is calculated, and obtain the water storage process line set of the power curtailment scheduling cycle set. Take the upper and lower envelopes of the water storage process line set to obtain the upper and lower basic scheduling lines during the flood season. Replace the upper basic scheduling line with the water curtailment prevention line.

[0084] Extract runoff data of the abandoned power dispatch cycle set during the dry season. Start the dispatch from the water level at the end of the dry season and perform reverse time-series fixed output calculation according to the guaranteed output until the beginning of the dry season to obtain the water supply process line. Continue to calculate the water supply process line set of the abandoned power dispatch cycle set during the dry season until all the water supply process lines of the abandoned power dispatch cycle set during the dry season are completed. Take the upper and lower envelopes of the water supply process line set to obtain the upper and lower basic dispatch lines during the dry season.

[0085] By combining the water storage process line set during the flood season and the water supply process line set during the dry season of the curtailment dispatch cycle set, the upper and lower basic dispatch lines of the dispatch cycle are obtained. Based on the upper and lower basic dispatch lines, the conventional dispatch map is divided from top to bottom into the hydropower increased output zone, the hydropower guaranteed output zone, and the hydropower reduced output zone.

[0086] If the water level is higher than the upper basic dispatch line during the current dispatch period, the hydropower output will be increased. If the water level is lower than the upper basic dispatch line during the current dispatch period, the hydropower output will be reduced. If the water level is between the upper and lower basic dispatch lines during the current dispatch period, the hydropower output will be guaranteed.

[0087] The dispatch lines, dispatch areas, and hydropower output information for the hydro-solar hybrid dispatch diagram are as follows:

[0088] Extract j scheduling cycles where the runoff guarantee rate is greater than the critical guarantee rate. Divide these j scheduling cycles into k groups based on the runoff guarantee rate, forming k complementary scheduling cycle sets. Each complementary scheduling cycle set contains multiple scheduling cycles. The information of the i-th complementary scheduling cycle set is as follows:

[0089] (1) With the goal of maximizing the amount of hydropower consumed, the month of full storage is obtained through optimized scheduling calculation. At the end of the month of full storage, the critical output data is used to perform reverse time-series fixed output calculation until the fixed output calculation is performed for each time period. Then, the water storage process line is obtained until the water storage process line of the complementary scheduling cycle set during the flood season is calculated. The water storage process line set of the complementary scheduling cycle set is obtained. The upper and lower envelope lines of the water storage process line set are taken to obtain the upper and lower basic scheduling lines during the flood season. The upper basic scheduling line is replaced with the water abandonment prevention line.

[0090] (2) Extract the runoff data of the complementary scheduling cycle set during the dry season. Start the scheduling from the water level at the end of the dry season and perform reverse time-series fixed output calculation according to the guaranteed output until the beginning of the dry season to obtain the water supply process line. Until the water supply process line of the complementary scheduling cycle set during the dry season is calculated, the water supply process line set of the complementary scheduling cycle set is obtained. Take the upper and lower envelope lines of the water supply process line set to obtain the upper and lower basic scheduling lines during the dry season.

[0091] (3) By combining the water storage process line set during the flood season and the water supply process line set during the dry season of the complementary scheduling cycle set, the upper and lower basic scheduling lines of the scheduling cycle are obtained. Based on the upper and lower basic scheduling lines, the hydropower scheduling diagram is divided into the hydropower increased output zone, the hydropower critical output zone, and the hydropower reduced output zone from top to bottom.

[0092] (4) When the water level during the current scheduling period is higher than the upper basic scheduling line, the hydropower output is increased; when the water level during the current scheduling period is lower than the upper basic scheduling line, the hydropower output is reduced; when the water level during the current scheduling period is between the upper and lower basic scheduling lines, the hydropower output is the predicted critical output.

[0093] (5) Obtain the information of the i-th complementary scheduling cycle set, return to step (1), and continue until the information of k complementary scheduling cycle sets is obtained to complete the calculation.

[0094] The critical output data is calculated as follows:

[0095] exist G m =F m

[0096] In the formula, This is critical output data;

[0097] The predicted critical output is calculated as follows:

[0098]

[0099]

[0100] exist Make

[0101] In the formula, To predict critical output; Forecast power output for the 24-hour photovoltaic power generation in month m; This represents the total output exceeding the maximum load of the transmission channel in the predicted m-th month due to the combined hydro-solar power output. This indicates the maximum output capacity that can be freed up for photovoltaic power generation in the predicted month m, assuming the total hydropower output remains constant.

[0102] When the reservoir scheduling period falls within the flood season, the hydropower output information for the increased output zone is the predicted critical output for the current month multiplied by an increased ratio factor. The increased ratio factor is a constant, generally between 1.2 and 1.5, and is taken as 1.3 in this embodiment. The hydropower output information for the decreased output zone is the predicted critical output for the current month multiplied by a decreased ratio factor. The decreased ratio factor is a constant, generally between 0.8 and 0.5, and is taken as 0.8 in this embodiment.

[0103] When the reservoir scheduling period is during the dry season, the hydropower output information of the increased output area is the guaranteed hydropower output for the current month multiplied by the increased ratio factor. The increased ratio factor is a constant, generally between 1.2 and 1.6, and is taken as 1.5 in this embodiment. The hydropower output information of the decreased output area is the guaranteed hydropower output for the current month multiplied by the decreased ratio factor. The decreased ratio factor is a constant, generally between 0.9 and 0.8, and is taken as 0.85 in this embodiment.

[0104] S2. Predict the runoff and photovoltaic power output for the scheduling cycle, and calculate the runoff guarantee rate. If the runoff guarantee rate is less than the critical guarantee rate, select the corresponding sub-scheduling diagram, i.e., select the conventional scheduling diagram. Determine the hydropower output of the reservoir for the current month based on the reservoir's water level at the beginning of the month and its scheduling area. Obtain the reservoir's water level at the end of the month through runoff calculation, and then proceed to step S5. If the runoff guarantee rate is greater than or equal to the critical guarantee rate, proceed to step S3. Figure 3 As shown, considering the runoff process during the scheduling cycle, the runoff guarantee rate for this embodiment is 53%. Figure 2 As shown, a complementary scheduling cycle set of 50% to 60% is selected, and the scheduling line, scheduling area and hydropower output information of the sub-scheduling diagram with a runoff guarantee rate of 50% to 60% are obtained according to step S14.

[0105] S3. Select the sub-scheduling chart corresponding to the runoff guarantee rate, i.e., select the hydropower-solar hybrid scheduling chart. Calculate the predicted critical output for the current month based on the predicted photovoltaic output for the current month, and determine whether the current month is in the flood season. If it is the flood season, the hydropower output in the critical output area is taken as the predicted critical output; if it is not the flood season, the hydropower output in the critical output area is taken as the guaranteed output. In this embodiment, the calculation is performed for the July scheduling period. July is in the flood season, and the predicted critical output for July is 1.79 million kW obtained through the above calculation.

[0106] S4. Based on the reservoir's water level at the beginning of the month and its location within the dispatching area, determine the reservoir's hydropower output for the current month. Obtain the reservoir's water level at the end of the month through runoff calculation. In this embodiment, the water level at the beginning of July, i.e., the water level at the end of June, is 2856.6m, which is located in the critical output zone of the sub-dispatch diagram. That is, the hydropower output for July is determined to be 1.79 million kW. Through runoff calculation, the water level at the end of July is obtained as 2895m. This process is carried out sequentially until the end of the dispatching cycle, and the long-term reservoir water level process and hydropower output process in the clean energy base are obtained.

[0107] S5. Determine if the scheduling cycle has ended. If yes, proceed to step S6; otherwise, return to step S2 and calculate the reservoir water level and hydropower output for the next month within the scheduling cycle.

[0108] S6. Obtain the reservoir water level process and hydropower output process of the clean energy base during this scheduling cycle, such as... Figures 4 to 5As shown, guided by the sub-scheduling diagram with a runoff guarantee rate of 50% to 60%, the reservoir's hydropower output and water level processes during the scheduling cycle meet the reservoir's operational requirements.

[0109] The formula for calculating the hydropower generation guarantee rate is:

[0110] P = M / 12

[0111] Where M represents the number of months in which the hydropower output of the reservoir is not lower than the guaranteed hydropower output under the guidance of the hydropower-solar complementary scheduling method; in this embodiment, the hydropower output is not lower than the guaranteed hydropower output for all 12 months, m=12, P=100%, which meets the reservoir operation requirements.

[0112] The present invention provides a clean energy base hydro-solar hybrid scheduling map application system, comprising:

[0113] The hydro-solar hybrid scheduling map division module is used to divide the hydro-solar hybrid scheduling map into two types of sub-scheduling maps according to the runoff guarantee rate and critical guarantee rate of the scheduling cycle. Each sub-scheduling map is divided into different scheduling areas by the scheduling line, and each scheduling area has hydropower output information.

[0114] The sub-scheduling diagram selection module is used to predict the runoff and photovoltaic power output during the scheduling cycle, calculate the runoff guarantee rate, and select the corresponding sub-scheduling diagram based on the runoff guarantee rate.

[0115] The scheduling module is used for the scheduling application of the hydro-solar hybrid scheduling map. If the selected sub-scheduling map is a conventional scheduling map, the hydropower output of the reservoir in the current month is determined based on the reservoir's water level at the beginning of the month and its location within the scheduling area. The water level at the end of the current month is obtained through runoff calculation. If the selected sub-scheduling map is a hydro-solar hybrid scheduling map, the predicted critical output for the current month is calculated based on the predicted photovoltaic output for the current month. It is then determined whether the current month is in the flood season. If it is the flood season, the hydropower output in the critical output area is taken as the predicted critical output. If it is not the flood season, the hydropower output in the critical output area is taken as the guaranteed output. The module also determines the hydropower output of the reservoir in the current month based on the reservoir's water level at the beginning of the month and its location within the scheduling area. The water level at the end of the current month is obtained through runoff calculation. This process continues until the calculation of reservoir hydropower output and water level for all months within the scheduling cycle is completed. This yields the long-term hydropower output process and reservoir water level process in the clean energy base, and the hydropower generation guarantee rate is obtained, thus completing the scheduling process.

[0116] An apparatus of the present invention includes a memory and a processor, wherein:

[0117] Memory is used to store computer programs that can run on a processor;

[0118] The processor is used to execute the steps of the above-described method for applying a water-solar hybrid scheduling diagram in a clean energy base when running the computer program, and can achieve the same technical effect as the above method.

Claims

1. A method for applying a water-solar hybrid scheduling diagram in a clean energy base, characterized in that, Includes the following steps: S1. The hydro-solar hybrid scheduling map is divided into two sub-scheduling maps based on the runoff guarantee rate and critical guarantee rate of the scheduling cycle: the conventional scheduling map and the hydro-solar hybrid scheduling map. When the runoff guarantee rate is less than the critical guarantee rate, the sub-scheduling map is the conventional scheduling map; when the runoff guarantee rate is greater than the critical guarantee rate, the sub-scheduling map is the hydro-solar hybrid scheduling map. Each sub-scheduling map is divided into different scheduling areas by the scheduling line, and each scheduling area has hydropower output information. S2. Predict the runoff and photovoltaic output for the scheduling cycle, and calculate the runoff guarantee rate. If the runoff guarantee rate is less than the critical guarantee rate, select the corresponding conventional scheduling map. Based on the reservoir's water level at the beginning of the month and its scheduling area, determine the reservoir's hydropower output for the current month. Obtain the reservoir's water level at the end of the month through runoff calculation, and then proceed to step S5. If the runoff guarantee rate is less than the critical guarantee rate, proceed to step S5. If the critical guarantee rate is reached, then proceed to step S3; S3. Select the hydropower-solar hybrid scheduling map corresponding to the runoff guarantee rate, calculate the predicted critical output for the current month based on the predicted photovoltaic output for the current month, and determine whether the current month is in the flood season. If it is the flood season, the hydropower output in the critical output area is the predicted critical output; if it is not the flood season, the hydropower output in the critical output area is the guaranteed output. S4. Based on the reservoir's water level at the beginning of the month and its location within the dispatch area, determine the reservoir's hydropower output for the current month, and obtain the reservoir's water level at the end of the month through runoff calculation; S5. Determine whether the scheduling cycle has ended. If yes, proceed to step S6; otherwise, return to step S2 and calculate the reservoir's hydropower output and water level for the next month within the scheduling cycle. S6. Obtain the long-term hydropower output process, reservoir water level process, and hydropower generation guarantee rate in the clean energy base, and complete the dispatch.

2. The method for applying a water-solar hybrid scheduling map in a clean energy base according to claim 1, characterized in that, The critical guarantee rate in step S1 is as follows: The runoff guarantee rate for multiple scheduling cycles is calculated based on runoff data to form a runoff guarantee rate set. The multiple scheduling cycles and their corresponding runoff data are then sorted in ascending order based on the runoff guarantee rate. By importing typical annual photovoltaic power output data, an optimized scheduling model is established. With the goal of maximizing the combined power consumption of water and photovoltaic, optimized scheduling calculations are performed for multiple scheduling cycles. The power wasted in multiple scheduling cycles during this process is recorded. The power wasted in multiple scheduling cycles is screened in combination with the runoff guarantee rate set until there is no power wasted in all scheduling cycles after a certain scheduling cycle. The runoff guarantee rate corresponding to this scheduling cycle is the critical guarantee rate.

3. The method for applying a water-solar hybrid scheduling map in a clean energy base according to claim 2, characterized in that, The objective function for optimizing the scheduling model is: ； In the formula, The total electricity consumed by water and solar power during the scheduling cycle; This represents the amount of hydropower consumed in the m-th month. The amount of electricity consumed by photovoltaic power in the mth month; This refers to the amount of electricity wasted in month m. The calculation of the amount of power wasted during the scheduling cycle is as follows: ； ； ； ； In the formula, The amount of electricity wasted during the scheduling cycle; This is the hydropower output data for month m; Data on 24-hour photovoltaic power output for month m; This represents the maximum load on the power transmission channel. This represents the upper limit of hydropower output in the m-th month. This represents the total output exceeding the maximum load of the transmission channel in the m-th month due to the combined hydro-solar power output. This represents the maximum output capacity that can be freed up for photovoltaic power generation in month m, while keeping the total hydropower output constant. The constraint function for optimizing the scheduling model is: Water balance constraints, reservoir water level constraints, power generation flow constraints, outflow constraints, reservoir output constraints, and variable nonnegativity constraints.

4. The method for applying a water-solar hybrid scheduling diagram in a clean energy base according to claim 1, characterized in that, The dispatch lines, dispatch areas, and hydropower output information of the conventional dispatch diagram in step S1 are as follows: Extract the i scheduling cycles where the runoff guarantee rate is less than the critical guarantee rate. These i scheduling cycles form the power curtailment scheduling cycle set. With the goal of maximizing the amount of hydropower consumed, optimize the scheduling calculation to obtain the month of full storage, and then obtain the water storage process line. Continue until the water storage process line of the power curtailment scheduling cycle set during the flood season is calculated, and obtain the water storage process line set of the power curtailment scheduling cycle set. Take the upper and lower envelopes of the water storage process line set to obtain the upper and lower basic scheduling lines during the flood season. Replace the upper basic scheduling line with the water curtailment prevention line. Extract runoff data of the abandoned power dispatch cycle set during the dry season. Start the dispatch from the water level at the end of the dry season and perform reverse time-series fixed output calculation according to the guaranteed output until the beginning of the dry season to obtain the water supply process line. After all the water supply process lines of the abandoned power dispatch cycle set during the dry season are calculated, the water supply process line set of the abandoned power dispatch cycle set is obtained. Take the upper and lower envelopes of the water supply process line set to obtain the upper and lower basic dispatch lines during the dry season. By combining the water storage process line set during the flood season and the water supply process line set during the dry season of the curtailment dispatch cycle, the upper and lower basic dispatch lines of the dispatch cycle are obtained. Based on the upper and lower basic dispatch lines, the conventional dispatch map is divided from top to bottom into the hydropower increased output zone, the hydropower guaranteed output zone, and the hydropower reduced output zone. If the water level is higher than the upper basic dispatch line during the current dispatch period, the hydropower output will be increased. If the water level is lower than the upper basic dispatch line during the current dispatch period, the hydropower output will be reduced. If the water level is between the upper and lower basic dispatch lines during the current dispatch period, the hydropower output will be guaranteed.

5. The method for applying a water-solar hybrid scheduling diagram in a clean energy base according to claim 1, characterized in that, The scheduling lines, scheduling areas, and hydropower output information of the hydro-solar hybrid scheduling diagram in step S1 are as follows: Extract j scheduling cycles where the runoff guarantee rate is greater than the critical guarantee rate. Divide these j scheduling cycles into k groups based on the runoff guarantee rate, forming k complementary scheduling cycle sets. Each complementary scheduling cycle set contains multiple scheduling cycles. The information for the complementary scheduling cycle set is as follows: (1) With the goal of maximizing the amount of hydropower consumed, the month of full storage is obtained through optimized scheduling calculation. At the end of the month of full storage, the critical output data is used to perform reverse time-series fixed output calculation until the fixed output is calculated for each time period. Then, the water storage process line is obtained until the water storage process line of the complementary scheduling cycle set during the flood season is calculated. The water storage process line set of the complementary scheduling cycle set is obtained. The upper and lower envelope lines of the water storage process line set are taken to obtain the upper and lower basic scheduling lines during the flood season. The upper basic scheduling line is replaced with the water abandonment prevention line. (2) Extract the runoff data of the complementary scheduling cycle set during the dry season. Start the scheduling from the water level at the end of the dry season and perform reverse time-series fixed output calculation according to the guaranteed output until the beginning of the dry season to obtain the water supply process line. Until the water supply process line of the complementary scheduling cycle set during the dry season is calculated, the water supply process line set of the complementary scheduling cycle set is obtained. Take the upper and lower envelope lines of the water supply process line set to obtain the upper and lower basic scheduling lines during the dry season. (3) By combining the water storage process line set of the complementary scheduling cycle set during the flood season and the water supply process line set during the dry season, the upper and lower basic scheduling lines of the scheduling cycle are obtained. Based on the upper and lower basic scheduling lines, the hydropower scheduling diagram is divided into the hydropower increased output zone, the hydropower critical output zone, and the hydropower reduced output zone from top to bottom. (4) When the water level during the current scheduling period is higher than the upper basic scheduling line, the hydropower output is increased; when the water level during the current scheduling period is lower than the upper basic scheduling line, the hydropower output is reduced; when the water level during the current scheduling period is between the upper and lower basic scheduling lines, the hydropower output is the predicted critical output. (5) Obtain the first The information of each complementary scheduling cycle set is obtained, and the process is repeated until k complementary scheduling cycle set information is obtained to complete the calculation.

6. The method for applying a water-solar hybrid scheduling diagram in a clean energy base according to claim 5, characterized in that, The critical output data is calculated as follows: exist , making ; in, This is the hydropower output data for month m; This is critical output data; This represents the total output exceeding the maximum load of the transmission channel in the m-th month due to the combined hydro-solar power output. This represents the maximum output capacity that can be freed up for photovoltaic power generation in month m, while keeping the total hydropower output constant. The critical output is calculated as follows: ； ； exist , making ; in, To predict critical output; Forecast power output for the 24-hour photovoltaic power generation in month m; This represents the total output exceeding the maximum load of the transmission channel in the predicted m-th month due to the combined hydro-solar power output. This indicates the maximum output capacity that can be freed up for photovoltaic power generation in the predicted month m, assuming the total hydropower output remains constant.

7. The method for applying a water-solar hybrid scheduling diagram in a clean energy base according to claim 5, characterized in that, When the reservoir scheduling period is during the flood season, the hydropower output information for the increased output area is the predicted critical output for the current month multiplied by the increased ratio factor, which is a constant; the hydropower output information for the decreased output area is the predicted critical output for the current month multiplied by the decreased ratio factor, which is a constant. When the reservoir scheduling period is during the dry season, the hydropower output information of the increased output area is the hydropower guaranteed output for the current month multiplied by the increased ratio factor, which is a constant; the hydropower output information of the decreased output area is the hydropower guaranteed output for the current month multiplied by the decreased ratio factor, which is a constant.

8. The method for applying a water-solar hybrid scheduling map in a clean energy base according to claim 1, characterized in that, The formula for calculating the hydropower generation guarantee rate in step S6 is: ； Where M represents the number of months in which the hydropower output of the reservoir is not less than the guaranteed hydropower output under the guidance of the hydropower-solar complementary scheduling method.

9. A system for applying the water-solar hybrid scheduling diagram of a clean energy base as described in any one of claims 1-8, characterized in that, include: The hydro-solar hybrid scheduling map division module is used to divide the hydro-solar hybrid scheduling map into two types of sub-scheduling maps according to the runoff guarantee rate and critical guarantee rate of the scheduling cycle. Each sub-scheduling map is divided into different scheduling areas by the scheduling line, and each scheduling area has hydropower output information. The sub-scheduling diagram selection module is used to predict the runoff and photovoltaic power output during the scheduling cycle, calculate the runoff guarantee rate, and select the corresponding sub-scheduling diagram based on the runoff guarantee rate. The scheduling module is used for the scheduling application of the hydro-solar hybrid scheduling map. If the selected sub-scheduling map is a conventional scheduling map, the hydropower output of the reservoir in the current month is determined based on the reservoir's water level at the beginning of the month and its location within the scheduling area. The water level at the end of the current month is obtained through runoff calculation. If the selected sub-scheduling map is a hydro-solar hybrid scheduling map, the predicted critical output for the current month is calculated based on the predicted photovoltaic output for the current month. It is then determined whether the current month is in the flood season. If it is the flood season, the hydropower output in the critical output area is taken as the predicted critical output. If it is not the flood season, the hydropower output in the critical output area is taken as the guaranteed output. The module also determines the hydropower output of the reservoir in the current month based on the reservoir's water level at the beginning of the month and its location within the scheduling area. The water level at the end of the current month is obtained through runoff calculation. This process continues until the calculation of reservoir hydropower output and water level for all months within the scheduling cycle is completed. This yields the long-term hydropower output process and reservoir water level process in the clean energy base, and the hydropower generation guarantee rate is obtained, thus completing the scheduling process.

10. A device, characterized in that, Includes memory and processor, wherein: Memory is used to store computer programs that can run on a processor; A processor, configured to, while running the computer program, execute the steps of the method for applying a water-solar hybrid scheduling diagram for a clean energy base as described in any one of claims 1-8.

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