Method and system for determining stable load shedding capacity taking into account the impact of distributed renewable energy

Abstract

The present invention discloses a method and system for determining the load shedding capacity of stable control taking into account the influence of distributed renewable energy. The method includes: calculating the curve similarity between the frequency change sequence of the AC side node of the faulty DC and the frequency change sequence of each highest AC voltage level substation in the power grid, and sorting each substation from small to large according to the curve similarity, and putting them into a substation set; calculating the load shedding capacity of the terminal branch of the low-voltage distribution network in the power supply area of ​​each substation in the substation set; when the sum of the load shedding capacity of the terminal branch of the low-voltage distribution network meets the recovery demand of the system power shortage, stop calculating the substation set. It can fully explore and utilize the characteristics of the receiving-end power grid containing DC and distributed renewable energy, so as to formulate the load shedding strategy as accurately as possible.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy stability control, and in particular, relates to a method and system for determining a stable control load shedding capacity taking into account the influence of distributed new energy. Background Art

[0002] For the receiving-end power grid of the DC project, the risks of power loss and frequency drop caused by DC blocking have always been the focus of power grid safety control. At the same time, with the increase in the number of distributed new energy sources connected to the low-voltage distribution network, its small single-machine capacity, decentralized access to the end of the low-voltage distribution network, and strong volatility have affected the electrical characteristics of the distribution network and increased the uncertainty of the strategy configuration involving load shedding control in the traditional third line of defense.

[0003] On the one hand, since the terminal branch is no longer a pure load node, the original terminal branch can still be used as a load shedding node during the period when the output of distributed renewable energy is highly volatile, and there is uncertainty in the organization of the specific load shedding amount. On the other hand, since distributed renewable energy generally does not have the ability to regulate frequency, the increase in its proportion will weaken the overall frequency control capability of the system. At the same time, large regional power systems are affected by the different characteristics of synchronous generator speeds, resulting in differences in the actual frequencies of each node. As the distribution of renewable energy in each power supply area increases and is unevenly distributed due to resource conditions, the node frequencies of each power supply area in the regional power system under a DC blocking fault also have different frequency response changes. Therefore, in the process of load shedding control, the selected load shedding amount cannot respond well to changes in system frequency, thereby affecting the stability of the power grid recovery during the power supply process. Summary of the invention

[0004] The present invention provides a method and system for determining stable load shedding capacity taking into account the influence of distributed renewable energy, which is used to solve the technical problem that the selected load shedding amount cannot respond well to system frequency changes, thereby affecting the stability of the power grid during power supply.

[0005] In a first aspect, the present invention provides a method for determining a stable load shedding capacity taking into account the influence of distributed renewable energy, comprising:

[0006] Through simulation calculation, the power shortage of the system when DC blocking occurs in the receiving-end power grid, the frequency change sequence of the AC-side nodes of the faulty DC, and the frequency change sequence of the substations with the highest AC voltage level in the power grid are obtained;

[0007] Calculate the curve similarity between the frequency change sequence of the AC side node of the faulty DC and the frequency change sequence of each substation with the highest AC voltage level in the power grid, and sort each substation from small to large according to the curve similarity and put them into the substation set;

[0008] Calculating the shelvable load capacity of the terminal branch of the low-voltage distribution network within the power supply area of ​​each substation in the substation set;

[0009] When the sum of the shelvable load capacities of the terminal branches of the low-voltage distribution network meets the recovery demand of the system power shortage, the calculation of the substation set is stopped.

[0010] In a second aspect, the present invention provides a system for determining stable load shedding capacity taking into account the influence of distributed renewable energy, comprising:

[0011] An acquisition module is configured to acquire, through simulation calculation, the system power shortage when DC blocking occurs in the receiving-end power grid, the frequency change sequence of the AC-side nodes of the faulty DC, and the frequency change sequence of each highest AC voltage level substation in the power grid;

[0012] A sorting module is configured to calculate the curve similarity between the frequency change sequence of the AC side node of the faulty DC and the frequency change sequence of each highest AC voltage level substation in the power grid, and sort each substation from small to large according to the curve similarity, and put it into the substation set;

[0013] A calculation module configured to calculate the shelvable load capacity of the terminal branch of the low-voltage distribution network within the power supply area of ​​each substation in the substation set;

[0014] The determination module is configured to stop calculating the substation set when the sum of the shelvable load capacities of the terminal branches of the low-voltage distribution network meets the recovery demand of the system power shortage.

[0015] According to a third aspect, an electronic device is provided, comprising: at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can perform the steps of the method for determining stable load shedding capacity taking into account the influence of distributed new energy sources according to any embodiment of the present invention.

[0016] In a fourth aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, wherein when the program instructions are executed by a processor, the processor executes the steps of a method for determining a stable load shedding capacity taking into account the influence of distributed renewable energy according to any embodiment of the present invention.

[0017] The method and system for determining the stable load shedding capacity taking into account the influence of distributed renewable energy in the present application improves the optimal selection of load shedding areas by considering the influence of the inherent frequency-spatial distribution characteristics of the power system. In addition, different situations of distributed renewable energy in the low-voltage terminal distribution network branches are taken into account to propose a specific calculation method for the load shedding capacity that can be organized. This method can fully explore and utilize the characteristics of the receiving-end power grid containing DC and distributed renewable energy, so as to formulate the load shedding strategy as accurately as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A flow chart of a method for determining a stable load shedding capacity taking into account the influence of distributed renewable energy provided by one embodiment of the present invention;

[0020] Figure 2 A structural block diagram of a system for determining a stable load shedding capacity taking into account the influence of distributed renewable energy provided by an embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1 , which shows a flow chart of a method for determining stable load shedding capacity taking into account the impact of distributed renewable energy in the present application.

[0024] like Figure 1 As shown, the method for determining the stable load shedding capacity taking into account the influence of distributed renewable energy specifically includes the following steps:

[0025] Step S101, obtaining through simulation calculation the system power shortage when DC blocking occurs in the receiving-end power grid, the frequency change sequence of the AC side nodes of the faulty DC, and the frequency change sequence of each highest AC voltage level substation in the power grid.

[0026] In this step, the simulation calculates and obtains the system power shortage when a DC blocking fault occurs in the receiving end grid. .

[0027] Simulate and calculate the time window The frequency variation sequence of the AC side node within the DC , and the first Frequency change sequence of the highest AC voltage level substation .in, and There are the same number of frequency change values ​​in the sequence. and Represents the first The frequency change value at a time point.

[0028] In a specific embodiment, simulation software is used to obtain the system power shortage when a blocking fault occurs in the DC A of a receiving-end power grid in a certain area. The highest AC voltage level substation in the power grid is 500kV. According to the simulation calculation results, the frequency change sequence of the AC side node of DC A within the time window of 20 seconds is obtained: , the frequency change sequence of all 23 500kV substations in the regional power grid All frequency change sequences have the same length, and each sequence is sampled every 0.02 seconds from time point 0 to 20 seconds, with a total of 1000 sampling points.

[0029] Step S102, calculate the curve similarity between the frequency change sequence of the AC side node of the faulty DC and the frequency change sequence of each highest AC voltage level substation in the power grid, and sort each substation from small to large according to the curve similarity and put them into the substation set.

[0030] In this step, the Euclidean distance formula is used and the influence of the lowest point frequency similarity weight is considered to calculate the Frequency change sequence of the highest AC voltage level substation The frequency change sequence of the AC side node of the fault DC The curve similarity , the expression is:

[0031] ,

[0032] In the formula, is the number of frequency sampling points in the time window, for The lowest frequency value in for The lowest frequency value in ;

[0033] According to the curve similarity from small to large, the highest AC voltage level substation in the whole network is After sorting, a curve similarity set is formed ,Will Corresponding highest AC voltage level substation Add to substation collection middle.

[0034] In a specific embodiment, the frequency change sequence of 23 500kV substations in the power grid and the frequency change sequence of the AC side node of DC A are calculated respectively. The frequency change sequence of the node on the AC side of DC A Taking the first 10 sampling points of as an example, the first 10 sampling points of the two sequences are shown in the following table.

[0035] ,

[0036] Substituting the frequency change sequence sampling points of the two curves into the curve similarity calculation formula is as follows:

[0037] ,

[0038] After calculating the similarity of the frequency change sequence curves of 23 500kV substations and DC A, the set is formed as follows:

[0039] ,

[0040] according to Rearrange the corresponding 23 500kV substations from small to large and put them into the substation set , an example is given below: The curve similarity of the frequency change sequence of 500kV substation C and DC A The curve similarity of the 23 500kV substations is the smallest, so it is ranked first. Therefore, the second 500kV substation C is put into the substation set as the first element. .

[0041] Step S103, calculating the shelvable load capacity of the terminal branch of the low-voltage distribution network in the power supply area of ​​each substation in the substation set.

[0042] In this step, define The highest AC voltage level substation In the power supply area The terminal branch of the low-voltage distribution network is ,as well as The branch power measured at the power monitoring point is ,like The power direction is from the external power grid to the end of the branch, then the branch power The direction is positive; otherwise, the branch power The direction is negative;

[0043] Calculated based on power grid account information and branch power direction information Load shedding .

[0044] It should be noted that if The direction is positive, and The calculation does not include distributed new energy installations. Load shedding The expression is:

[0045] ,

[0046] like The direction is positive, and Distributed renewable energy output , and the distributed renewable energy installed capacity and pure load belong to different terminal branches, calculation Load shedding The expression is:

[0047] ,

[0048] like The direction is positive, and Distributed renewable energy output , and the distributed renewable energy installation and pure load belong to the same terminal branch, calculate Load shedding The expression is:

[0049] ,

[0050] like The direction is negative, calculate Load shedding The expression is:

[0051] .

[0052] In a specific embodiment, the substation set The substations in the set are used to determine the load capacity that can be cut in the terminal branch of the low-voltage distribution network in the power supply area of ​​the substation in order. An example is as follows: 500kV substation C is placed as the first element in the substation set Therefore, the load shedding capacity of the low-voltage distribution network terminal branch in the power supply area of ​​500kV substation C is determined first. There are 78 low-voltage distribution network terminal branches in 500kV substation C. Take one of the branches as an example: the branch power of the first branch The power value is 12MW, and the power direction is from the external power grid to the end of the branch. The direction is positive. According to the grid account information, the first branch contains distributed renewable energy output. =1MW, and the distributed renewable energy installed capacity and pure load belong to different terminal branches. Calculate the load shedding capacity of the branch =11MW.

[0053] Step S104, when the sum of the shelvable load capacities of the terminal branches of the low-voltage distribution network meets the recovery demand of the system power shortage, the calculation of the substation set is stopped.

[0054] In this step, The highest AC voltage level substation The amount of load shedding that can be organized within the power supply area , the expression is:

[0055] ,

[0056] In the formula, for The direction is positive and does not include the number of branches with distributed renewable energy installed capacity. Indicates that there is The load shedding amount of the terminal branch of the low-voltage distribution network is not 0. To provide distributed renewable energy;

[0057] Determine the calculated 1st to The amount of load shedding that can be organized in the power supply area of ​​the highest AC voltage level substation Whether the preset condition is met, the expression of the preset condition is:

[0058] ,

[0059] In the formula, is the system power shortage;

[0060] If the preset conditions are met, stop Calculation of intermediate shear load;

[0061] If the preset conditions are not met, continue Middle +1 highest AC voltage level substation The amount of load shedding that can be organized is calculated within the power supply area.

[0062] In a specific embodiment, first The first element in the collection For 500kV substation C, calculate the load shedding that can be organized in the power supply area of ​​500kV substation C : In this power supply area, the load shedding capacity of 53 low-voltage distribution network terminal branches is not 0, among which the load shedding capacity of the 1st to 27th branches is adopted Calculation, the load shedding capacity of the 28th to 53rd branches is adopted Calculate. Finally, we get MW.

[0063] according to have to MW, not satisfied . Then continue middle Middle +1 highest AC voltage level substation The load shedding capacity that can be organized in the power supply area is calculated. For example, substation C is the first substation in the ranking, and substation D is the second substation in the ranking. Since the load shedding capacity that can be organized in substation C does not meet , then continue to calculate the load shedding amount that can be organized for the power supply area of ​​substation D.

[0064] In summary, the method of the present application improves the optimal selection of load shedding areas by considering the influence of the inherent frequency-spatial distribution characteristics of the power system, and also takes into account the different situations of distributed renewable energy in the low-voltage terminal distribution network branches to propose a specific calculation method for the load shedding capacity that can be organized. This method can fully explore and utilize the characteristics of the receiving power grid containing DC and distributed renewable energy, so as to formulate the load shedding strategy as accurately as possible.

[0065] See also Figure 2 , which shows a structural block diagram of a system for determining stable load shedding capacity taking into account the impact of distributed renewable energy in the present application.

[0066] like Figure 2 As shown, the stabilizing load shedding capacity determination system 200 includes an acquisition module 210 , a sorting module 220 , a calculation module 230 and a determination module 240 .

[0067] Among them, the acquisition module 210 is configured to obtain the system power shortage, the frequency change sequence of the AC side nodes of the faulty DC, and the frequency change sequence of each substation with the highest AC voltage level in the power grid through simulation calculation when DC locking occurs in the receiving-end power grid; the sorting module 220 is configured to calculate the curve similarity between the frequency change sequence of the AC side nodes of the faulty DC and the frequency change sequence of each substation with the highest AC voltage level in the power grid, and sort each substation from small to large according to the curve similarity, and put them into the substation set; the calculation module 230 is configured to calculate the cuttable load capacity of the terminal branch of the low-voltage distribution network in the power supply area of ​​each substation in the substation set; the determination module 240 is configured to stop the calculation of the substation set when the sum of the cuttable load capacity of the terminal branch of the low-voltage distribution network meets the recovery requirement of the system power shortage.

[0068] It should be understood that Figure 2 Modules and references documented in Figure 1 Therefore, the operations and features described above for the method and the corresponding technical effects are also applicable to Figure 2 The modules in it will not be described in detail here.

[0069] In some other embodiments, the embodiments of the present invention further provide a computer-readable storage medium having a computer program stored thereon, wherein when the program instructions are executed by a processor, the processor is caused to execute the method for determining the stable load shedding capacity taking into account the influence of distributed renewable energy in any of the above method embodiments;

[0070] As an implementation mode, the computer-readable storage medium of the present invention stores computer-executable instructions, and the computer-executable instructions are configured as follows:

[0071] Through simulation calculation, the power shortage of the system when DC blocking occurs in the receiving-end power grid, the frequency change sequence of the AC-side nodes of the faulty DC, and the frequency change sequence of the substations with the highest AC voltage level in the power grid are obtained;

[0072] Calculate the curve similarity between the frequency change sequence of the AC side node of the faulty DC and the frequency change sequence of each substation with the highest AC voltage level in the power grid, and sort each substation from small to large according to the curve similarity and put them into the substation set;

[0073] Calculating the shelvable load capacity of the terminal branch of the low-voltage distribution network within the power supply area of ​​each substation in the substation set;

[0074] When the sum of the shelvable load capacities of the terminal branches of the low-voltage distribution network meets the recovery demand of the system power shortage, the calculation of the substation set is stopped.

[0075] The computer-readable storage medium may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created according to the use of the stable load shedding capacity determination system taking into account the influence of distributed renewable energy, etc. In addition, the computer-readable storage medium may include a high-speed random access memory, and may also include a memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the computer-readable storage medium may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the stable load shedding capacity determination system taking into account the influence of distributed renewable energy through a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0076] Figure 3 is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention, such as Figure 3 As shown, the device includes: a processor 310 and a memory 320. The electronic device may also include: an input device 330 and an output device 340. The processor 310, the memory 320, the input device 330 and the output device 340 may be connected via a bus or other means. Figure 3 In the example, the connection through the bus is taken as an example. The memory 320 is the above-mentioned computer-readable storage medium. The processor 310 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions and modules stored in the memory 320, that is, the method for determining the stable load shedding capacity taking into account the influence of distributed renewable energy in the above-mentioned method embodiment is implemented. The input device 330 can receive input digital or character information, and generate key signal input related to user settings and function control of the stable load shedding capacity determination system taking into account the influence of distributed renewable energy. The output device 340 may include display devices such as display screens.

[0077] The electronic device can execute the method provided by the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not described in detail in this embodiment, please refer to the method provided by the embodiment of the present invention.

[0078] As an implementation mode, the electronic device is applied to a system for determining a stable load shedding capacity taking into account the influence of distributed renewable energy, and is used for a client, and includes: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can:

[0079] Through simulation calculation, the power shortage of the system when DC blocking occurs in the receiving-end power grid, the frequency change sequence of the AC-side nodes of the faulty DC, and the frequency change sequence of the substations with the highest AC voltage level in the power grid are obtained;

[0080] Calculate the curve similarity between the frequency change sequence of the AC side node of the faulty DC and the frequency change sequence of each substation with the highest AC voltage level in the power grid, and sort each substation from small to large according to the curve similarity and put them into the substation set;

[0081] Calculating the shelvable load capacity of the terminal branch of the low-voltage distribution network within the power supply area of ​​each substation in the substation set;

[0082] When the sum of the shelvable load capacities of the terminal branches of the low-voltage distribution network meets the recovery demand of the system power shortage, the calculation of the substation set is stopped.

[0083] Through the description of the above implementation modes, those skilled in the art can clearly understand that each implementation mode can be implemented by means of software plus a necessary general hardware platform, or of course by hardware. Based on such an understanding, the above technical solution can essentially or in other words be embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for determining load shedding capacity with stable control taking into account the influence of distributed renewable energy, characterized in that: include: Through simulation calculation, the power shortage of the system when DC blocking occurs in the receiving-end power grid, the frequency change sequence of the AC-side nodes of the faulty DC, and the frequency change sequence of the substations with the highest AC voltage level in the power grid are obtained; Calculate the curve similarity between the frequency change sequence of the AC side node of the faulty DC and the frequency change sequence of each substation with the highest AC voltage level in the power grid, and sort each substation from small to large according to the curve similarity and put them into the substation set; Calculating the shelvable load capacity of the terminal branch of the low-voltage distribution network within the power supply area of ​​each substation in the substation set; When the sum of the shelvable load capacities of the terminal branches of the low-voltage distribution network meets the recovery demand of the system power shortage, the calculation of the substation set is stopped.

2. A method for determining stable load shedding capacity taking into account the influence of distributed renewable energy according to claim 1, characterized in that: The method of calculating the curve similarity between the frequency change sequence of the AC side node of the faulty DC and the frequency change sequence of each highest AC voltage level substation in the power grid, and sorting each substation from small to large according to the curve similarity, and putting them into the substation set includes: The Euclidean distance formula is used and the influence of the lowest point frequency similarity weight is considered to calculate the Frequency change sequence of the highest AC voltage level substation The frequency change sequence of the AC side node of the fault DC The curve similarity , the expression is: ， In the formula, is the number of frequency sampling points in the time window, for The lowest frequency value in for The lowest frequency value in ; According to the curve similarity from small to large, the highest AC voltage level substation in the whole network is After sorting, a curve similarity set is formed ,Will Corresponding highest AC voltage level substation Add to substation collection middle.

3. The method for determining the stable load shedding capacity taking into account the influence of distributed renewable energy according to claim 1, characterized in that: The calculating of the shelvable load capacity of the terminal branch of the low-voltage distribution network in the power supply area of ​​each substation in the substation set includes: Definition The highest AC voltage level substation In the power supply area The terminal branch of the low voltage distribution network is ,as well as The branch power measured at the power monitoring point is ,like The power direction is from the external power grid to the end of the branch, then the branch power The direction is positive; otherwise, the branch power The direction is negative; Calculated based on power grid account information and branch power direction information Load shedding .

4. A method for determining stable load shedding capacity taking into account the influence of distributed renewable energy according to claim 3, characterized in that: The calculation is based on the power grid account information and branch power direction information Load shedding include: like The direction is positive, and The calculation does not include distributed renewable energy installations. Load shedding The expression is: ， like The direction is positive, and Distributed renewable energy output , and the distributed renewable energy installed capacity and pure load belong to different terminal branches, calculation Load shedding The expression is: ， like The direction is positive, and Distributed renewable energy output , and the distributed renewable energy installation and pure load belong to the same terminal branch, calculate Load shedding The expression is: ， like The direction is negative, calculation Load shedding The expression is: 。 5. A method for determining stable load shedding capacity taking into account the influence of distributed renewable energy according to claim 3, characterized in that: When the sum of the shelvable load capacities of the terminal branches of the low-voltage distribution network meets the recovery demand of the system power shortage, stopping the calculation of the substation set includes: No. The highest AC voltage level substation The amount of load shedding that can be organized within the power supply area , the expression is: ， In the formula, for The direction is positive and does not include the number of branches with distributed renewable energy installed capacity. Indicates that there is The load shedding amount of the terminal branch of the low-voltage distribution network is not 0. To provide distributed renewable energy; Determine the calculated 1st to The amount of load shedding that can be organized in the power supply area of ​​the highest AC voltage level substation Whether the preset condition is met, the expression of the preset condition is: ， In the formula, is the system power shortage; If the preset conditions are met, stop Calculation of intermediate shear load; If the preset conditions are not met, continue Middle +1 highest AC voltage level substation The amount of load shedding that can be organized is calculated within the power supply area.

6. A system for determining load shedding capacity with stable control taking into account the influence of distributed renewable energy, characterized in that: include: An acquisition module is configured to acquire, through simulation calculation, the system power shortage when DC blocking occurs in the receiving-end power grid, the frequency change sequence of the AC-side nodes of the faulty DC, and the frequency change sequence of each highest AC voltage level substation in the power grid; A sorting module is configured to calculate the curve similarity between the frequency change sequence of the AC side node of the faulty DC and the frequency change sequence of each highest AC voltage level substation in the power grid, and sort each substation from small to large according to the curve similarity, and put it into the substation set; A calculation module configured to calculate the shelvable load capacity of the terminal branch of the low-voltage distribution network within the power supply area of ​​each substation in the substation set; The determination module is configured to stop calculating the substation set when the sum of the shelvable load capacities of the terminal branches of the low-voltage distribution network meets the recovery demand of the system power shortage.

7. An electronic device, characterized in that: include: At least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the method described in any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

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