Cross-regional power dispatching methods, devices, computer equipment and storage media

Abstract

This application relates to a method, apparatus, computer equipment, and storage medium for cross-regional power dispatching. The method includes: dividing multiple regional power grids into a first sequence and a second sequence; the first sequence includes multiple regional power grids for power transmission; the second sequence includes multiple regional power grids for power reception; acquiring target data for the regional power grids, and processing the target data to obtain the dispatching requirements of the regional power grids; the target data includes new energy power generation forecast data and system load forecast data; prioritizing the first sequence and the second sequence based on the dispatching requirements of each regional power grid to obtain a ranking result; and performing power dispatching on each regional power grid according to the ranking result. This method can improve the efficiency of cross-regional power dispatching.

Description

Technical Field

[0001] This application relates to the field of power dispatching technology, and in particular to a cross-regional power dispatching method, apparatus, computer equipment, and storage medium. Background Technology

[0002] As the proportion of installed capacity of new energy sources continues to increase in various provinces and regions, the random uncertainty of new energy sources will lead to more frequent intraday cross-regional power dispatching needs. Currently, the adjustment of cross-regional power transmission plans relies entirely on dispatchers' experience to manually modify the plans, lacking effective technical system support. This results in insufficient perception of absorption capacity, dispatchers' incomplete understanding of the peak-shaving reserves of each regional power grid, and an inability to promptly identify the absorption capacity of each province and region.

[0003] Current cross-regional power dispatching methods or traditional approaches suffer from low dispatching efficiency. Summary of the Invention

[0004] Therefore, it is necessary to provide a cross-regional power dispatching method, apparatus, computer equipment, and storage medium that can improve the efficiency of power dispatching, addressing the aforementioned technical problems.

[0005] Firstly, this application provides a cross-regional power dispatching method, the method comprising:

[0006] Multiple regional power grids are divided to obtain a first sequence and a second sequence; the first sequence includes multiple regional power grids used for power transmission; the second sequence includes multiple regional power grids used for power reception.

[0007] The target data of the regional power grid is acquired and processed to obtain the dispatching requirements of the regional power grid; the target data includes new energy power generation forecast data and system load forecast data.

[0008] Based on the scheduling needs of the power grid in each region, the first sequence and the second sequence are prioritized and sorted to obtain the sorting results;

[0009] Based on the ranking results, power dispatch is carried out for each regional power grid.

[0010] In one embodiment, the renewable energy power generation forecast data includes day-ahead renewable energy output forecast data and ultra-short-term renewable energy output forecast data; the system load forecast data includes day-ahead load forecast data and ultra-short-term load forecast data; the step of acquiring target data of the regional power grid and processing the target data to obtain the dispatch demand of the regional power grid includes:

[0011] Based on ultra-short-term renewable energy output forecast data and day-ahead renewable energy output forecast data, the renewable energy output deviation of the regional power grid is obtained;

[0012] The load deviation of the regional power grid is obtained based on ultra-short-term load forecast data and day-ahead load forecast data.

[0013] Address the output and load deviations of new energy sources to determine the dispatching needs of the regional power grid.

[0014] In one embodiment, the step of processing the output deviation of new energy sources and the load deviation to determine the dispatch demand of the regional power grid includes:

[0015] The difference between the power output deviation of new energy sources and the load deviation is processed to obtain the net power deviation of the regional power grid;

[0016] If the net power deviation is less than 0, the dispatch demand of the regional power grid is determined as the incoming demand.

[0017] If the net power deviation is greater than the preset threshold, the dispatch demand of the regional power grid will be determined as the transmission demand; the preset threshold is greater than or equal to 0.

[0018] In one embodiment, the sorting result includes a first priority sequence and a second priority sequence; the first priority sequence is obtained by prioritizing the regional power grids whose scheduling demand is for power transmission in the first sequence; the second priority sequence is obtained by prioritizing the regional power grids whose scheduling demand is for power reception in the second sequence; the step of performing power dispatching on each regional power grid according to the sorting result includes:

[0019] The net power deviations of the first priority sequence and the net power deviations of the second priority sequence are processed to obtain the total net power deviation.

[0020] If the net deviation of total power is greater than 0, then the net deviation of total power will be allocated to each regional power grid in the second priority sequence in descending order of priority.

[0021] If the total power net deviation is less than 0, the total power net deviation will be allocated to each regional power grid in the second priority sequence in order of priority from low to high.

[0022] If the total power net deviation is 0, then power dispatching is carried out on each regional power grid based on the first priority sequence and the second priority sequence.

[0023] In one embodiment, the method further includes:

[0024] If the net deviation of total power is greater than the first additional absorbable power, the first difference will be allocated to each regional power grid in the second priority sequence in order of priority from low to high. The first additional absorbable power is determined based on the reserve capacity of the generation side in the second priority sequence. The first difference is the difference between the first additional absorbable power and the net deviation of total power.

[0025] In one embodiment, the step of power dispatching for each regional power grid based on the sorting result further includes:

[0026] Obtain the regional power grid scheduling relationships between the first priority sequence and the second priority sequence; the regional power grid scheduling relationships include the scheduling relationships between each regional power grid in the first priority sequence and each regional power grid in the second priority sequence;

[0027] If the scheduling relationship between the first regional power grid and the second regional power grid is non-schedulable, then the net power deviation of the first regional power grid and the net power deviations of each power grid other than the second regional power grid in the second priority sequence are processed to obtain the net power deviation to be allocated; wherein, the first regional power grid is in the first priority sequence and the second regional power grid is in the second priority sequence;

[0028] The net power deviation of the first regional power grid will then be allocated sequentially to the regional power grids other than the second regional power grid in the second priority sequence.

[0029] If the net deviation of the power to be allocated is greater than the second additional absorbable power, the second difference will be allocated to each regional power grid in the first priority sequence in descending order of priority. The second additional absorbable power is determined based on the generation-side reserve capacity of each regional power grid in the second priority sequence, excluding the second regional power grid. The second difference is the difference between the second additional absorbable power and the net deviation of the power to be allocated.

[0030] The total net power deviation is obtained based on the net power deviations of each power unit in the first priority sequence (excluding the first regional power grid), the second difference, and the net power deviations of each power unit in the allocated second priority sequence.

[0031] Secondly, this application provides a cross-regional power dispatching device, the device comprising:

[0032] The sequence partitioning module is used to partition multiple regional power grids to obtain a first sequence and a second sequence; the first sequence includes multiple regional power grids for power transmission; the second sequence includes multiple regional power grids for power reception.

[0033] The demand acquisition module is used to acquire target data of the regional power grid and process the target data to obtain the dispatch demand of the regional power grid; the target data includes new energy power generation forecast data and system load forecast data;

[0034] The demand sorting module is used to prioritize the first sequence and the second sequence based on the scheduling needs of each regional power grid, and obtain the sorting result.

[0035] The power dispatching module is used to dispatch power to various regional power grids based on the sorting results.

[0036] Thirdly, this application provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the above-described method.

[0037] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described method.

[0038] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the above-described method.

[0039] The aforementioned cross-regional power dispatching method, apparatus, computer equipment, and storage medium divide multiple regional power grids to obtain a first sequence and a second sequence. The first sequence includes multiple regional power grids used for power transmission. Target data of the regional power grids is acquired, and the target data is processed to obtain the dispatching requirements of the regional power grids. Based on the dispatching requirements of each regional power grid, the first sequence and the second sequence are prioritized to obtain a ranking result. Power dispatching is performed on each regional power grid according to the ranking result, which can realize automatic identification and matching of cross-regional power transmission and reception requirements, and improve the efficiency of real-time cross-regional power transmission and reception dispatching. Attached Figure Description

[0040] Figure 1 This is a flowchart illustrating a cross-regional power dispatching method in one embodiment;

[0041] Figure 2 This is a flowchart illustrating the cross-regional power dispatching steps in one embodiment;

[0042] Figure 3 This is a flowchart illustrating the cross-regional power dispatching steps in another embodiment;

[0043] Figure 4 This is a flowchart illustrating the cross-regional power dispatching steps in yet another embodiment;

[0044] Figure 5 This is a flowchart illustrating a cross-regional power dispatching method in an example.

[0045] Figure 6 This is a flowchart illustrating the cross-regional power dispatching steps in another embodiment;

[0046] Figure 7 This is a flowchart illustrating the steps of cross-regional power dispatching in an example.

[0047] Figure 8 This is a structural block diagram of a cross-regional power dispatching device in one embodiment;

[0048] Figure 9 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0050] In one embodiment, such as Figure 1 As shown, a cross-regional power dispatching method is provided, the method including:

[0051] Step 110: Divide the multiple regional power grids to obtain a first sequence and a second sequence; the first sequence includes multiple regional power grids for power transmission; the second sequence includes multiple regional power grids for power reception.

[0052] Specifically, multiple regional power grids that need to be dispatched can be divided into two power transmission and reception demand sequences, including a first sequence for power transmission and a second sequence for power reception.

[0053] Step 120: Obtain target data for the regional power grid and process the target data to obtain the dispatch requirements of the regional power grid; the target data includes new energy power generation forecast data and system load forecast data;

[0054] Specifically, based on the predicted power generation of new energy sources and the predicted system load of each regional power grid, the dispatching demand of each regional power grid can be obtained; the dispatching demand can be either power transmission or reception demand. In some examples, the target data may also include adjustments made by dispatchers through manual intervention. Combining these adjustments allows for real-time and accurate acquisition of the dispatching demand of each regional power grid. In some examples, the dispatching demand of each regional power grid may include both incoming and outgoing power demand.

[0055] Step 130: Based on the scheduling needs of each regional power grid, prioritize the first sequence and the second sequence respectively to obtain the sorting results;

[0056] Specifically, the regional power grids in the first and second sequences can be prioritized based on the resource return rate of each regional power grid (e.g., the economic benefits of the region corresponding to each regional power grid) to obtain the ranking results.

[0057] Step 140: Based on the sorting results, perform power dispatching for each regional power grid.

[0058] Specifically, based on the sorting results, the regional power grids with higher priority in the first and second sequences can be matched first. For example, the scheduling needs of the highest priority regional power grid in the first sequence can be matched with the regional power grids in the second sequence according to their priority. If the receiving needs of the highest priority regional power grid in the second sequence cannot meet the sending needs of the highest priority regional power grid in the first sequence, then the remaining sending needs of the highest priority regional power grid in the first sequence can be matched with the receiving needs of the second highest priority regional power grid in the second sequence. For another example, if the receiving needs of the highest priority regional power grid in the second sequence can meet the sending needs of the highest priority regional power grid in the first sequence, then the sending needs of the second highest priority regional power grid in the first sequence can be matched with the remaining receiving needs of the highest priority regional power grid in the second sequence, and so on, until all scheduling needs are matched. Power dispatch can then be performed on each regional power grid based on the matching results.

[0059] This application embodiment divides multiple regional power grids to obtain a first sequence and a second sequence. The first sequence includes multiple regional power grids used for power transmission. Target data of the regional power grids is obtained, and the target data is processed to obtain the scheduling requirements of the regional power grids. Based on the scheduling requirements of each regional power grid, the first sequence and the second sequence are prioritized to obtain a ranking result. Power dispatch is performed on each regional power grid according to the ranking result, which can realize automatic identification and matching of cross-regional power transmission and reception needs, and improve the efficiency of real-time dispatch of cross-regional power transmission and reception.

[0060] In one embodiment, the renewable energy power generation forecast data includes day-ahead renewable energy output forecast data and ultra-short-term renewable energy output forecast data; the system load forecast data includes day-ahead load forecast data and ultra-short-term load forecast data; such as Figure 2 As shown, the steps for obtaining target data of the regional power grid and processing the target data to obtain the dispatching requirements of the regional power grid include:

[0061] Step 210: Based on the ultra-short-term renewable energy output forecast data and the day-ahead renewable energy output forecast data, obtain the renewable energy output deviation of the regional power grid;

[0062] Step 220: Based on the ultra-short-term load forecast data and the day-ahead load forecast data, obtain the load deviation of the regional power grid;

[0063] Step 230: Process the output deviation of new energy sources and the load deviation to determine the dispatching needs of the regional power grid.

[0064] Specifically, the deviation of renewable energy output in the regional power grid can be obtained from the ultra-short-term renewable energy output forecast data and the day-ahead renewable energy output forecast data using the following formula:

[0065] ΔG=G future -G now

[0066] Where ΔG represents the deviation of new energy output in the regional power grid; G future Forecast data on ultra-short-term renewable energy output; G now This refers to the day-ahead renewable energy output forecast data. The renewable energy output deviation can be used to predict the renewable energy output deviation of the regional power grid in the future; the day-ahead renewable energy output forecast data can be used to predict the short-term renewable energy output.

[0067] Furthermore, based on ultra-short-term load forecast data and day-ahead load forecast data, the load deviation of the regional power grid can be obtained using the following formula:

[0068] ΔL=L future -L now

[0069] Where ΔL represents the load deviation of the regional power grid; L future For ultra-short-term load forecasting data, L now This refers to day-ahead load forecast data; day-ahead load forecast data can be used for short-term day-ahead load forecasts. The regional power grid dispatch demand can be determined based on the relationship between the magnitude of renewable energy output deviations and load deviations.

[0070] In one embodiment, such as Figure 3 As shown, the steps for handling new energy output deviations and load deviations to determine the dispatch demand of the regional power grid include:

[0071] Step 310: Perform difference processing on the new energy output deviation and load deviation to obtain the net power deviation of the regional power grid;

[0072] Step 320: If the net power deviation is less than 0, then the dispatch demand of the regional power grid is determined as the incoming demand.

[0073] Step 330: If the net power deviation is greater than the preset threshold, the dispatch demand of the regional power grid is determined as the transmission demand; the preset threshold is greater than or equal to 0.

[0074] Specifically, the following formula can be used to handle the output deviation of new energy sources and the load deviation to obtain the net power deviation of the regional power grid:

[0075] T=ΔG-ΔL

[0076] Where T is the net power deviation of the regional power grid, that is, the net deviation between the power generation of new energy sources and the load.

[0077] When the net power deviation T < 0, it indicates that the power grid in this area has a demand for power input; when the net power deviation T > T min A value ≥0 indicates that the power grid in that area has a power transmission demand. The preset threshold T... min A manually set threshold can be set when the net deviation between the renewable energy generation power and the load of the regional power grid exceeds a preset threshold T. min This indicates that the regional power grid has a demand for power transmission. In some examples, if the net power deviation T... min ≥T≥0 indicates that the power grid in this area does not require dispatching.

[0078] In one embodiment, the sorting result includes a first priority sequence and a second priority sequence; the first priority sequence is obtained by prioritizing the regional power grids in the first sequence whose scheduling demand is for sending out; the second priority sequence is obtained by prioritizing the regional power grids in the second sequence whose scheduling demand is for receiving. Figure 4 As shown, the steps for power dispatching in each regional power grid based on the sorting results include:

[0079] Step 410: Process the net power deviations of the first priority sequence and the net power deviations of the second priority sequence to obtain the total net power deviation.

[0080] Step 420: If the net total power deviation is greater than 0, the net total power deviation is allocated to each regional power grid in the second priority sequence in descending order of priority.

[0081] Step 430: If the total power net deviation is less than 0, the total power net deviation is allocated to each regional power grid in the second priority sequence in order of priority from low to high.

[0082] Step 440: If the total power net deviation is 0, then power dispatch is performed on each regional power grid based on the first priority sequence and the second priority sequence.

[0083] Specifically, the net deviation of total power can be obtained using the following formula:

[0084]

[0085] Among them, T i T represents the i-th net power deviation in the first priority sequence, where m is the number of regional power grids in the first priority sequence; jΔT represents the j-th net power deviation in the second priority sequence, where n is the number of regional power grids in the second priority sequence; ΔT is the total net power deviation, i.e., the net demand of the entire network.

[0086] Furthermore, if the total net power deviation ΔT > 0, indicating that the entire grid has additional power transmission demand, the total net power deviation can be allocated to each regional power grid in the second priority sequence according to their priority from high to low. Specifically, the additional power transmission demand can be received by each regional power grid in the second priority sequence according to the receiving priority. The amount of additional receiving by each regional power grid in the second priority sequence can be equal to the reserve capacity of the generation side of that regional power grid. If the reserve capacity of the generation side is sufficient, the regional power grid can receive all the additional power transmission demand. If the additional power transmission demand exceeds the reserve capacity of the generation side, the excess part will be received by the next regional power grid in the second priority sequence, and so on. If all the additional power transmission demand is finally allocated, the automatic identification and matching of cross-regional power transmission and receiving demand ends. Otherwise, the power transmission demand needs to be reduced, and the reduction of power transmission demand is carried out in reverse order of the priority of the first priority sequence, until the additional power transmission demand is allocated, and the automatic identification and matching of cross-regional power transmission and receiving demand ends.

[0087] If the total net power deviation is less than ΔT < 0, it indicates that the entire grid has additional power receiving demand. Then, based on the priority of each regional power grid in the second priority sequence from low to high, the total net power deviation can be allocated sequentially to the regional power grids in the second priority sequence. Specifically, the power receiving demand of each regional power grid can be reduced in reverse order of the second priority sequence, and the allocation can continue until all additional power receiving demand is allocated, thus ending the automatic identification and matching of cross-regional power grid power transmission and reception demand.

[0088] If the total power net deviation ΔT = 0, it indicates that the first priority sequence exactly meets the requirements of the second priority sequence, and the automatic identification and matching of cross-regional power grid transmission and reception requirements ends. Based on the first priority sequence and the second priority sequence, power dispatch is carried out on each regional power grid.

[0089] In one embodiment, the method further includes:

[0090] If the net deviation of total power is greater than the first additional absorbable power, the first difference will be allocated to each regional power grid in the second priority sequence in order of priority from low to high. The first additional absorbable power is determined based on the reserve capacity of the generation side in the second priority sequence. The first difference is the difference between the first additional absorbable power and the net deviation of total power.

[0091] Specifically, regional power grids can be provincial power grids; such as Figure 5As shown, when the first priority sequence can include Guizhou and Yunnan, and the second priority sequence can include Guangdong, and both Guizhou and Yunnan can transmit electricity to Guangdong, the net demand of the entire network can be obtained using the following formula:

[0092] ΔT=T 贵州 +T 云南 -T 广东

[0093] Among them, T 贵州 and T 云南 These represent the net power deviation of the regional power grids in Guizhou and Yunnan, respectively, i.e., the net deviation between new energy power generation and load; T 广东 ΔT represents the net power deviation of the Guangdong regional power grid, which is the net deviation between the power generation of new energy sources and the load; ΔT represents the net total power deviation, which is the net demand of the entire grid.

[0094] If the total power net deviation ΔT = 0, it indicates that the first priority sequence exactly meets the requirements of the second priority sequence, and the automatic identification and matching of cross-regional power transmission and reception requirements ends.

[0095] If the total power net deviation ΔT > 0, it indicates that the entire grid has additional power transmission demand. The total power net deviation can then be allocated to each regional power grid in the second priority sequence in descending order of priority. The additional power demand is increased sequentially by province according to the receiving priority. The amount of additional power received by each province is equal to the reserve capacity of the province's power generation side. If the net deviation of the total power is less than or equal to the first additional absorbable power, where the first additional absorbable power can be the sum of the reserve capacity of the power generation side of the regional power grids that can receive power in the second priority sequence, it indicates that the reserve capacity of the power generation side is sufficient and the second priority sequence can receive all the additional power demand. Then, according to the priority of each regional power grid in the second priority sequence, if the current province receives all the additional power demand, the excess part can be received by the next province in the second priority sequence, and so on. If the net deviation of the total power is greater than the first additional absorbable power, it indicates that the reserve capacity of the power generation side cannot meet the additional power demand. Then, the second priority sequence reduces the power demand in reverse order of priority. For example, the first difference is distributed to each province in the second priority sequence in reverse order. The first difference is the difference between the first additional absorbable power and the net deviation of the total power. If all the additional power transmission demand is eventually distributed, the automatic identification and matching of inter-provincial power transmission and reception demand will end. Otherwise, the power transmission demand needs to be reduced. The power transmission demand will be reduced in reverse order of the first priority sequence until all the additional power transmission demand is distributed, at which point the automatic identification and matching of inter-provincial power transmission and reception demand will end.

[0096] If the total net power deviation is less than ΔT < 0, it indicates that the entire grid has additional power receiving demand. The total net power deviation can then be allocated sequentially to the regional power grids in the second priority sequence, from lowest to highest priority. The power receiving demand in each province is reduced in reverse order of the second priority sequence, and this process continues until the additional power receiving demand is exhausted, at which point the automatic identification and matching of inter-provincial power transmission and reception demand ends.

[0097] In one embodiment, such as Figure 6 As shown, the steps for power dispatching in each regional power grid based on the sorting results also include:

[0098] Step 610: Obtain the regional power grid scheduling relationship between the first priority sequence and the second priority sequence; the regional power grid scheduling relationship includes the scheduling relationship between each regional power grid in the first priority sequence and each regional power grid in the second priority sequence.

[0099] Step 620: If the scheduling relationship between the first regional power grid and the second regional power grid is unschedulable, then process the net power deviation of the first regional power grid and the net power deviations of each power grid other than the second regional power grid in the second priority sequence to obtain the net power deviation to be allocated; wherein, the first regional power grid is in the first priority sequence and the second regional power grid is in the second priority sequence.

[0100] Step 630 involves distributing the net power deviation of the first regional power grid to each regional power grid in the second priority sequence, excluding the second regional power grid.

[0101] Step 640: If the net deviation of the power to be allocated is greater than the second additional absorbable power, then according to the priority of each regional power grid in the first priority sequence from high to low, the second difference is allocated to each regional power grid in the first priority sequence in sequence; the second additional absorbable power is determined based on the generation-side reserve down-cut capacity of each regional power grid in the second priority sequence, excluding the second regional power grid; the second difference is the difference between the second additional absorbable power and the net deviation of the power to be allocated.

[0102] Step 650: Based on the net power deviations of each power in the first priority sequence excluding the first regional power grid, the second difference, and the net power deviations of each power in the allocated second priority sequence, the total net power deviation is obtained.

[0103] Specifically, the regional power grid scheduling relationships between each regional power grid in the first priority sequence and each regional power grid in the second priority sequence can be obtained. If there are no unschedulable regional power grids between the first and second priority sequences, then steps 410 to 440 above can be referred to automatically identify and match the cross-regional power grid transmission and reception demands of the first and second priority sequences, and power scheduling can be performed on each regional power grid. If there are unschedulable regional power grids between the first and second priority sequences, for example, if the scheduling relationship between the first regional power grid in the first priority sequence and the second regional power grid in the second priority sequence is unschedulable, where the first regional power grid can be any priority-ranked regional power grid in the first priority sequence and the second regional power grid can be any priority-ranked regional power grid in the second priority sequence, then the power transmission and reception between the sending and receiving power grids can be reasonably allocated according to the priority of the first priority sequence, as well as the size of the transmission demand, the receiving demand, and the reserve capacity reduction on the generation side. If the first regional power grid has the highest priority in the first priority sequence, the net deviation of the power to be allocated can be compared with the second additional absorbable power. The net deviation of the power to be allocated can be the sum of the net deviation of the power in the first regional power grid and the net deviations of all other regional power grids in the second priority sequence, excluding the second regional power grid. The second additional absorbable power can be the sum of the generation-side reserve down-regulation capacity of all regional power grids in the second priority sequence, excluding the second regional power grid. If the net deviation of the power to be allocated is greater than the second additional absorbable power, it indicates that other regional power grids in the second priority sequence, excluding the second regional power grid, cannot absorb the net deviation of the power to be allocated. In this case, the second difference can be allocated to each regional power grid in the first priority sequence in sequence. The second difference can be the difference between the second additional absorbable power and the net deviation of the power to be allocated. If the net deviation of the power to be allocated is less than or equal to the second additional absorbable power, it indicates that other regional power grids in the second priority sequence, excluding the second regional power grid, can absorb the net deviation of the power to be allocated. The first regional power grid can be fully supplied to other regional power grids in the second priority sequence, excluding the second regional power grid, and the unallocated incoming demand and generation-side reserve reduction capacity of the second priority sequence can be updated. The total net power deviation can be obtained based on the net power deviation of each region other than the first regional power grid in the first priority sequence, the second difference, and the net power deviation of each region in the allocated second priority sequence.

[0104] In some examples, the net demand of the entire network excluding the first regional power grid can be obtained using the following formula:

[0105]

[0106] Among them, T iT represents the i-th net power deviation in the first priority sequence, where m is the number of regional power grids in the first priority sequence; j T represents the j-th net power deviation in the second priority sequence, where n is the number of regional power grids in the second priority sequence. A ΔT represents the net power deviation of the first regional power grid; ΔT represents the total net power deviation, i.e., the net demand of the entire grid.

[0107] The following formula can be used to determine whether the absorption capacity of power grids other than the second regional power grid is sufficient:

[0108]

[0109] Among them, T′ j T represents the generation-side reserve reduction capacity of the j-th regional power grid in the second priority sequence; B The net power deviation of the second regional power grid; T′ B This is to reduce the reserve capacity on the generation side of the second regional power grid.

[0110] If the absorption capacity of other regional power grids besides the second regional power grid is sufficient, then the entire first regional power grid can be sent to the regional power grids other than the second regional power grid in the second priority sequence, and the unallocated receiving demand and generation-side reserve reduction capacity of these second priority sequences can be updated. Then, the net demand of the entire network excluding the first regional power grid can be obtained, and the process returns to step 420.

[0111] If the absorption capacity of other regional power grids besides the second regional power grid is sufficient, then if the first condition is met, the entire first regional power grid can be supplied to other regional power grids besides the second regional power grid in the second priority sequence, and the unallocated receiving demand and generation-side reserve reduction capacity of these second priority sequences can be updated. Then, the net demand of the entire network excluding the first regional power grid can be obtained, and the process returns to step 420. The first condition may include the following formula:

[0112]

[0113] If the second condition is met, the power transmission of the first regional power grid will be reduced, where the reduction amount can be... The second condition may include the following formula:

[0114]

[0115] Once the allocation of power between the first regional power grid and the regional power grids in the second priority sequence (excluding the second regional power grid) is completed, the net demand of the entire network when the other regional power grids in the first priority sequence (excluding the first regional power grid) are allocated to the second regional power grid can be obtained using the following formula, and then we return to step 420:

[0116]

[0117] If the third condition is met, then all of the first regional power grid's power will be supplied to other regional power grids in the second priority sequence, excluding the second regional power grid. The unallocated incoming demand and generation-side reserve reduction capacity of these second priority sequences will be updated. Then, the net demand of the entire network excluding the first regional power grid will be obtained, and the process will return to step 420. The third condition may include the following formula:

[0118]

[0119] If the third condition is not met, then the power transmission of the first regional power grid will be reduced first, followed by the power transmission of other regional power grids in the first priority sequence, and the deviation value will be obtained using the following formula:

[0120]

[0121] Where ΔS is the deviation value. If ΔS > T A Then, the power reduction amount of the first regional power grid is set to 0, and the power reduction amount of other regional power grids in the first priority sequence is set to ΔS-T. A If ΔS≤T A Then, the power reduction of the first regional power grid is set as ΔS.

[0122] In some examples, such as Figure 7 As shown, when Guizhou appears in the first priority sequence while Guangxi appears in the second priority sequence, this is a special case where power dispatch between the regional power grids of Guizhou and Guangxi is not possible. For example, if the first priority sequence includes Guizhou and Yunnan, and the second priority sequence includes Guangdong and Guangxi, then if Guizhou's priority is higher than Yunnan's in the first priority sequence, all of Guizhou's power can be sent to Guangdong, and Guangdong's unallocated incoming demand and generation-side reserve capacity can be updated. The net demand of the entire grid excluding Guizhou can be obtained using the following formula:

[0123] ΔT=T 云南 -(T 广东 +T 广西 )

[0124] The following formula is used to determine whether Guangdong's absorption capacity is sufficient. If it is sufficient, all of Guizhou's electricity will be sent to Guangdong, and Guangdong's unallocated receiving demand and power generation reserve capacity will be updated. Then, the net demand of the entire grid excluding Guizhou will be calculated, and the process will return to step 420:

[0125] T 广东 +T′ 广东 ≥T 云南 +T 贵州

[0126] If the absorption capacity of Guangdong, as determined by the above formula, is insufficient, then if the following formula condition is met, all of Guizhou's input will be sent to Guangdong, and Guangdong's unallocated input demand and power generation reserve capacity will be updated. Then, the net demand of the entire grid excluding Guizhou will be calculated, and the process will return to step 420:

[0127]

[0128] Guizhou will reduce its food delivery if the following conditions are met, where the reduction amount can be T. 贵州 -(T 广东 +T′ 广东 The conditional formula is as follows:

[0129]

[0130] Once the allocations for Guizhou and Guangdong are completed, the net demand for the entire network under the condition that Yunnan is allocated to Guangxi is obtained using the following formula:

[0131] ΔT=T 云南 -T 广西

[0132] If the following conditions are met, all of Guizhou's demand will be transferred to Guangdong, and Guangdong's unallocated demand and power generation reserve capacity will be updated. Then, the net demand of the entire grid excluding Guizhou will be obtained, and the process will return to step 420. The condition formula is as follows:

[0133]

[0134] If the above conditions and formulas are not met, then the shipments will be reduced in the order of Guizhou and Yunnan, and the deviation value will be calculated using the following formula:

[0135] ΔS=(T 云南 +T 贵州 )-(T 广东 +T 广西 )-(T′ 广东 +T′ 广西 )

[0136] Where ΔS>T 贵州 Then, the power transmission reduction in Guizhou will be set to 0, and the power transmission reduction in other regional power grids in the first priority sequence will be set to ΔS-T. 贵州 If ΔS≤T 贵州 Then, the amount of reduced delivery to Guizhou will be set as ΔS.

[0137] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0138] Based on the same inventive concept, this application also provides a cross-regional power dispatching device for implementing the cross-regional power dispatching method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more cross-regional power dispatching device embodiments provided below can be found in the limitations of the cross-regional power dispatching method described above, and will not be repeated here.

[0139] In one embodiment, such as Figure 8 As shown, a cross-regional power dispatching device is provided, the device comprising:

[0140] The sequence partitioning module 810 is used to partition multiple regional power grids to obtain a first sequence and a second sequence; the first sequence includes multiple regional power grids for power transmission; the second sequence includes multiple regional power grids for power reception.

[0141] The demand acquisition module 820 is used to acquire target data of the regional power grid and process the target data to obtain the dispatch demand of the regional power grid; the target data includes new energy power generation forecast data and system load forecast data;

[0142] The demand sorting module 830 is used to prioritize the first sequence and the second sequence based on the scheduling needs of each regional power grid, and obtain the sorting result.

[0143] The power dispatching module 840 is used to perform power dispatching for each regional power grid based on the sorting results.

[0144] In one embodiment, the demand acquisition module is used to:

[0145] Based on ultra-short-term renewable energy output forecast data and day-ahead renewable energy output forecast data, the renewable energy output deviation of the regional power grid is obtained;

[0146] The load deviation of the regional power grid is obtained based on ultra-short-term load forecast data and day-ahead load forecast data.

[0147] Address the output and load deviations of new energy sources to determine the dispatching needs of the regional power grid.

[0148] In one embodiment, the step of processing the output deviation of new energy sources and the load deviation to determine the dispatch demand of the regional power grid includes:

[0149] The difference between the power output deviation of new energy sources and the load deviation is processed to obtain the net power deviation of the regional power grid;

[0150] If the net power deviation is less than 0, the dispatch demand of the regional power grid is determined as the incoming demand.

[0151] If the net power deviation is greater than the preset threshold, the dispatch demand of the regional power grid will be determined as the transmission demand; the preset threshold is greater than or equal to 0.

[0152] In one embodiment, the power dispatch module is used for:

[0153] The net power deviations of the first priority sequence and the net power deviations of the second priority sequence are processed to obtain the total net power deviation.

[0154] If the net deviation of total power is greater than 0, then the net deviation of total power will be allocated to each regional power grid in the second priority sequence in descending order of priority.

[0155] If the total power net deviation is less than 0, the total power net deviation will be allocated to each regional power grid in the second priority sequence in order of priority from low to high.

[0156] If the total power net deviation is 0, then power dispatching is carried out on each regional power grid based on the first priority sequence and the second priority sequence.

[0157] In one embodiment, the power dispatch module is further configured to, if the net deviation of total power is greater than the first additional absorbable power, allocate the first difference to each regional power grid in the second priority sequence in order of priority from low to high; the first additional absorbable power is determined based on the reserve capacity of the generation side based on the second priority sequence; the first difference is the difference between the first additional absorbable power and the net deviation of total power.

[0158] In one embodiment, the power dispatch module is further configured to:

[0159] Obtain the regional power grid scheduling relationships between the first priority sequence and the second priority sequence; the regional power grid scheduling relationships include the scheduling relationships between each regional power grid in the first priority sequence and each regional power grid in the second priority sequence;

[0160] If the scheduling relationship between the first regional power grid and the second regional power grid is non-schedulable, then the net power deviation of the first regional power grid and the net power deviations of each power grid other than the second regional power grid in the second priority sequence are processed to obtain the net power deviation to be allocated; wherein, the first regional power grid is in the first priority sequence and the second regional power grid is in the second priority sequence;

[0161] The net power deviation of the first regional power grid will then be allocated sequentially to the regional power grids other than the second regional power grid in the second priority sequence.

[0162] If the net deviation of the power to be allocated is greater than the second additional absorbable power, the second difference will be allocated to each regional power grid in the first priority sequence in descending order of priority. The second additional absorbable power is determined based on the generation-side reserve capacity of each regional power grid in the second priority sequence, excluding the second regional power grid. The second difference is the difference between the second additional absorbable power and the net deviation of the power to be allocated.

[0163] The total net power deviation is obtained based on the net power deviations of each power unit in the first priority sequence (excluding the first regional power grid), the second difference, and the net power deviations of each power unit in the allocated second priority sequence.

[0164] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0165] Each module in the aforementioned cross-regional power dispatching device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0166] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method described above.

[0167] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 9 As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operating system and computer programs stored in the non-volatile storage media. The database stores cross-regional power dispatch data. The I / O interfaces allow the processor to exchange information with external devices. The communication interface allows communication with external terminals via a network connection. When executed by the processor, the computer program implements a cross-regional power dispatch method.

[0168] Those skilled in the art will understand that Figure 9 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0169] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described above.

[0170] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the method described above.

[0171] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0172] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0173] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A cross-regional power dispatching method, characterized in that, The method includes: Multiple regional power grids are divided to obtain a first sequence and a second sequence; the first sequence includes multiple regional power grids for power transmission; the second sequence includes multiple regional power grids for power reception. The target data of the regional power grid is acquired, and the target data is processed to obtain the dispatching demand of the regional power grid; the target data includes new energy power generation forecast data and system load forecast data. Based on the scheduling needs of each regional power grid, the first sequence and the second sequence are prioritized and sorted to obtain the sorting results; Based on the sorting results, power dispatch is performed on each of the regional power grids; The step of performing power dispatching on each of the regional power grids based on the sorting results includes: The scheduling requirements of the highest priority regional power grid in the first sequence are matched with the regional power grids in the second sequence according to their priority order. If the receiving requirements of the highest priority regional power grid in the second sequence cannot meet the sending requirements of the highest priority regional power grid in the first sequence, the remaining sending requirements of the highest priority regional power grid in the first sequence are matched with the receiving requirements of the second highest priority regional power grid in the second sequence. If the receiving demand of the highest priority regional power grid in the second sequence satisfies the sending demand of the highest priority regional power grid in the first sequence, then the sending demand of the second highest priority regional power grid in the first sequence is matched with the remaining receiving demand of the highest priority regional power grid in the second sequence, and so on, until all scheduling demands are matched.

2. The method according to claim 1, characterized in that, The new energy power generation forecast data includes day-ahead new energy output forecast data and ultra-short-term new energy output forecast data; the system load forecast data includes day-ahead load forecast data and ultra-short-term load forecast data; the step of obtaining the target data of the regional power grid and processing the target data to obtain the dispatch demand of the regional power grid includes: Based on the ultra-short-term renewable energy output forecast data and the day-ahead renewable energy output forecast data, the renewable energy output deviation of the regional power grid is obtained; The load deviation of the regional power grid is obtained based on the ultra-short-term load forecast data and the day-ahead load forecast data. The power output deviation of the new energy source and the load deviation are processed to determine the dispatching requirements of the regional power grid.

3. The method according to claim 2, characterized in that, The step of processing the output deviation of the new energy source and the load deviation to determine the dispatch demand of the regional power grid includes: The difference between the new energy output deviation and the load deviation is processed to obtain the net power deviation of the regional power grid; If the net power deviation is less than 0, then the dispatch demand of the regional power grid is determined as the incoming demand. If the net power deviation is greater than a preset threshold, the dispatch demand of the regional power grid is determined as the transmission demand; the preset threshold is greater than or equal to 0.

4. The method according to claim 3, characterized in that, The sorting results include a first priority sequence and a second priority sequence; the first priority sequence is obtained by prioritizing the regional power grids whose scheduling needs are for sending out in the first sequence; the second priority sequence is obtained by prioritizing the regional power grids whose scheduling needs are for receiving in the second sequence. The step of performing power dispatching on each of the regional power grids according to the sorting result includes: The net power deviations of the first priority sequence and the net power deviations of the second priority sequence are processed to obtain the total net power deviation. If the total power net deviation is greater than 0, then according to the priority of each regional power grid in the second priority sequence from high to low, the total power net deviation is sequentially allocated to each regional power grid in the second priority sequence; If the total power net deviation is less than 0, then according to the priority of each regional power grid in the second priority sequence from low to high, the total power net deviation is sequentially allocated to each regional power grid in the second priority sequence; If the total power net deviation is 0, then power dispatch is performed on each of the regional power grids based on the first priority sequence and the second priority sequence.

5. The method according to claim 4, characterized in that, The method further includes: If the net deviation of total power is greater than the first additional absorbable power, the first difference is allocated to each of the regional power grids in the second priority sequence in order of priority from low to high; the first additional absorbable power is determined based on the reserve capacity of the generation side in the second priority sequence; the first difference is the difference between the first additional absorbable power and the net deviation of total power.

6. The method according to claim 4, characterized in that, The step of performing power dispatching on each of the regional power grids based on the sorting result further includes: Obtain the regional power grid scheduling relationship between the first priority sequence and the second priority sequence; the regional power grid scheduling relationship includes the scheduling relationship between each regional power grid in the first priority sequence and each regional power grid in the second priority sequence; If the scheduling relationship between the first regional power grid and the second regional power grid is non-schedulable, then the net power deviation of the first regional power grid and the net power deviations of each of the other regions in the second priority sequence are processed to obtain the net power deviation to be allocated; wherein, the first regional power grid is in the first priority sequence and the second regional power grid is in the second priority sequence; The net power deviation of the first regional power grid is then allocated sequentially to each of the regional power grids in the second priority sequence, excluding the second regional power grid. If the net deviation of the power to be allocated is greater than the second additional absorbable power, then according to the priority of each regional power grid in the first priority sequence from high to low, the second difference is allocated to each of the regional power grids in the first priority sequence in sequence; the second additional absorbable power is determined based on the generation-side reserve capacity of each regional power grid other than the second regional power grid in the second priority sequence; the second difference is the difference between the second additional absorbable power and the net deviation of the power to be allocated; The total net power deviation is obtained based on the net power deviations of each power deviation other than that of the first regional power grid in the first priority sequence, the second difference, and the net power deviations of each power deviation in the allocated second priority sequence.

7. A cross-regional power dispatching device, characterized in that, The device includes: A sequence partitioning module is used to partition multiple regional power grids to obtain a first sequence and a second sequence; the first sequence includes multiple regional power grids for power transmission; the second sequence includes multiple regional power grids for power reception. The demand acquisition module is used to acquire target data of the regional power grid and process the target data to obtain the dispatch demand of the regional power grid; the target data includes new energy power generation forecast data and system load forecast data; The demand sorting module is used to prioritize the first sequence and the second sequence based on the scheduling needs of each regional power grid, and obtain the sorting result. The power dispatching module is used to perform power dispatching on each of the regional power grids according to the sorting results; The power dispatching module is specifically used to match the dispatching demand of the highest priority regional power grid in the first sequence with the regional power grids in the second sequence according to their priority order. If the receiving demand of the highest priority regional power grid in the second sequence cannot meet the sending demand of the highest priority regional power grid in the first sequence, then the remaining sending demand of the highest priority regional power grid in the first sequence is matched with the receiving demand of the second highest priority regional power grid in the second sequence. If the receiving demand of the highest priority regional power grid in the second sequence meets the sending demand of the highest priority regional power grid in the first sequence, then the sending demand of the second highest priority regional power grid in the first sequence is matched with the remaining receiving demand of the highest priority regional power grid in the second sequence, and so on, until all dispatching demands are matched.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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