Power transmission and transformation equipment disposal optimization method and system under external disaster

Abstract

The invention discloses a power transmission and transformation equipment disposal optimization method and system under an external disaster. The method comprises the following steps: acquiring a first equipment fault set under the external disaster; removing related fault combinations of the first equipment fault set and the equipment which may fail, and generating a second equipment fault set under the external disaster; calculating a first safety margin of each fault combination in the first equipment fault set; calculating a second safety margin of each fault combination in the second equipment fault set; respectively calculating safety margins of the first equipment fault set and the second equipment fault set; based on the safety margins of the two equipment fault sets, calculating the safety margin contribution degree of the equipment which may have the fault; a device handling preference ranking table is generated based on the security margin contribution. The method can clearly quantify the physical meaning, is easy to operate, can quickly identify the key equipment set which affects the safe and stable operation of the power grid, can quickly determine the equipment which needs to be processed preferentially when a fault occurs, and accelerates the emergency response speed.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power safety control, and in particular to a method and system for optimizing the handling of power transmission and transformation equipment under external disasters. Background Art

[0002] Under extreme external disasters such as typhoons, ice cover, wildfires, cold waves, lightning, rainstorms and floods, various types of power transmission and transformation equipment, such as transmission lines, transformers, busbars, etc., are prone to failure. Therefore, it is necessary to quickly identify key risk equipment based on online quantitative evaluation technology for safe and stable operation of power grids, optimize the objects of emergency disposal and conduct proactive prevention and control, and extend risk defense to ensure the safety of power grids and power supply by ensuring the safety of equipment.

[0003] However, there is currently a lack of quantitative evaluation indicators that consider the impact of equipment failures on the safe and stable operation of the entire network, the evolution of disasters based on the emergency response of power transmission and transformation equipment, and the changes in the operation mode of the power grid. Especially when emergency resources are limited, it is difficult to respond to and identify the key equipment set that affects the safe and stable operation of the power grid by relying on offline plans and manual experience, and the level of refinement of emergency decision-making needs to be improved. Therefore, a method is needed to quantitatively evaluate the evolution trend of external disasters and the dynamic changes in the power grid mode, and quickly identify the key equipment that affects the safe and stable operation of the power grid. Summary of the invention

[0004] In view of the above existing problems, the present invention is proposed.

[0005] Therefore, the present invention provides a method and system for optimizing the handling of power transmission and transformation equipment under external disasters, which can quantitatively evaluate the existing methods and solve the problems that the existing methods rely on offline plans and manual experience when emergency resources are limited, and it is difficult to identify the key equipment sets that affect the safe and stable operation of the power grid, and cannot be flexibly adjusted based on the power grid operation mode.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides a method for optimizing the handling of power transmission and transformation equipment under external disasters, comprising:

[0008] Obtain the first equipment failure set under external disasters;

[0009] Eliminate the related fault combinations of the equipment that may fail from the first equipment fault set to generate the second equipment fault set under the external disaster;

[0010] Calculate a first safety margin for each fault combination in a first equipment fault set;

[0011] Calculate a second safety margin for each fault combination in a second equipment fault set;

[0012] Based on the first safety margin and the second safety margin, respectively calculating safety margins of a first device failure set and a second device failure set;

[0013] Calculating the safety margin contribution of the equipment that may fail based on the safety margins of the two equipment failure sets;

[0014] An equipment handling priority ranking table is generated based on the safety margin contribution.

[0015] As a preferred solution of the method for optimizing the handling of power transmission and transformation equipment under external disasters described in the present invention, wherein: the obtaining of the first equipment fault set under external disasters includes:

[0016] The power transmission and transformation equipment that may be affected by external disasters and fail 1 ,l 2 ,…,l k}Combined to generate the original fault set F O , expressed as:

[0017]

[0018] Among them, k is the number of power transmission and transformation equipment that may be affected or fail under extreme external disasters; f represents each fault combination, with a total of Fault combination;

[0019] The original fault set is screened to reduce the size of the fault set, and a first device fault set F is generated, which is expressed as:

[0020]

[0021] Where m is the number of fault combinations in the first device fault set F, and

[0022] As a preferred solution of the method for optimizing the handling of power transmission and transformation equipment under external disasters described in the present invention, if the first safety margin Then the system is stable under this fault combination;

[0023] If the first safety margin Then under this fault combination, the system becomes unstable;

[0024] If the first safety margin Then under this fault combination, the system is close to stability or close to instability;

[0025] If the second safety margin Then the system is stable under this fault combination;

[0026] If the second safety margin Then under this fault combination, the system becomes unstable;

[0027] If the second safety margin Then under this fault combination, the system is close to stability or close to instability;

[0028] Where s is the number of the fault combination f.

[0029] As a preferred solution of the method for optimizing the handling of power transmission and transformation equipment under external disasters described in the present invention, the first equipment failure is concentrated on the equipment that may fail. i The relevant fault combinations of are eliminated to generate the second equipment fault set F under external disasters i , expressed as:

[0030]

[0031] Where z is the fault set F i The number of fault combinations in

[0032] The elimination method only eliminates the related fault combinations of one device that may fail each time.

[0033] As a preferred solution of the method for optimizing the handling of power transmission and transformation equipment under external disasters described in the present invention, the first equipment fault set safety margin η is the minimum safety margin among all possible equipment combinations that may fail, expressed as:

[0034]

[0035] The second device failure set safety margin n is the device l that may fail except for the device l that may fail. i The minimum safety margin for all equipment and equipment combinations that may fail except for

[0036]

[0037] As a preferred solution of the method for optimizing the handling of power transmission and transformation equipment under external disasters described in the present invention, the safety margin contribution c of the equipment that may fail is calculated based on the safety margin of the two equipment failure sets. i , expressed as:

[0038] c i =η i -η

[0039] Among them, η i ≥η;

[0040] Generating a preferred ranking table of equipment disposal based on the safety margin contribution includes:

[0041] Traverse all devices in the first device failure set in turn and find all risk devices {l1 ,l 2 ,…,l k}'s safety margin contribution {c 1 ,c 2 ,…,c k}, arrange the corresponding risk equipment in descending order according to the safety margin contribution, and obtain the equipment disposal priority sorting table E, which is expressed as:

[0042] E={l 1_c ,l 2_c ,…,l k_c},c 1_c ≥c 2_c ≥…≥c k_c .

[0043] In a second aspect, the present invention provides a system for optimizing the handling of power transmission and transformation equipment under external disasters, including: a first acquisition module, for acquiring a first equipment fault set under external disasters;

[0044] A second acquisition module is used to remove the related fault combinations of the equipment that may fail from the first equipment fault set, and generate a second equipment fault set under external disasters;

[0045] A first calculation module, used to calculate a first safety margin for each fault combination in a first equipment fault set;

[0046] A second calculation module, used for calculating a second safety margin of each fault combination in a second equipment fault set;

[0047] A third calculation module, used to calculate the safety margin of the first device failure set and the second device failure set respectively;

[0048] A contribution calculation module, used to calculate the safety margin contribution of the device that may fail based on the safety margins of two device failure sets;

[0049] A sorting module is used to generate a preferred sorting table for equipment disposal based on the safety margin contribution.

[0050] As a preferred solution of the power transmission and transformation equipment handling optimization system under external disasters described in the present invention, the first acquisition module includes:

[0051] Combined module, used to connect power transmission and transformation equipment that may be affected by external disasters or fail. 1 ,l 2 ,…,l k}Combined to generate the original fault set;

[0052] The screening module is used to screen the original fault set to reduce the size of the fault set and generate a first device fault set.

[0053] In a third aspect, the present invention provides a computing device, comprising:

[0054] Memory and processor;

[0055] The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the computer executable instructions are executed by the processor, the steps of the method for optimizing the handling of power transmission and transformation equipment under external disasters are implemented.

[0056] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the method for optimizing the handling of power transmission and transformation equipment under external disasters.

[0057] Compared with the prior art, the present invention has the following beneficial effects: the present invention generates a fault set again after eliminating the target equipment, and determines the priority order of equipment by calculating the safety margin contribution, so that the quantified physical meaning is clear and easy to operate, and can quickly identify the key equipment set that affects the safe and stable operation of the power grid, and can allocate limited maintenance and repair resources more specifically, optimize the objects of emergency disposal, and improve the level of refinement of emergency decision-making. When a fault occurs, the equipment that needs to be handled first can be quickly determined, which speeds up the emergency response and improves the efficiency of using limited emergency resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0059] Figure 1 A schematic diagram of the overall process logic of a method for optimizing the handling of power transmission and transformation equipment under external disasters according to an embodiment of the present invention;

[0060] Figure 2 Another overall process logic diagram of the method for optimizing the handling of power transmission and transformation equipment under external disasters described in one embodiment of the present invention. DETAILED DESCRIPTION

[0061] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0062] Example 1, reference Figure 1-Figure 2 , which is an embodiment of the present invention, provides a method for optimizing the handling of power transmission and transformation equipment under external disasters, comprising:

[0063] S100: Acquire the first device fault set under the external disaster;

[0064] Specifically, external disasters include extreme external disasters such as typhoons, ice cover, wildfires, cold waves, lightning, heavy rains and floods; equipment includes power transmission and transformation equipment such as power lines, transformers, busbars, etc.

[0065] In the embodiment of the present application, obtaining the first device fault set under the external disaster includes:

[0066] The power transmission and transformation equipment that may be affected by external disasters and fail 1 ,l 2 ,…,l k}Combined to generate the original fault set F O , expressed as:

[0067]

[0068] Among them, k is the number of power transmission and transformation equipment that may be affected or fail under extreme external disasters; f represents each fault combination. If the exhaustive combination is used, there are a total of Fault combination;

[0069] The original fault set is screened to reduce the size of the fault set and generate the first device fault set F, which is expressed as:

[0070]

[0071] Where m is the number of fault combinations in the first device fault set F, and

[0072] It should be noted that the original fault set is screened because there are a large number of power transmission and transformation equipment that may fail under extreme external disasters. Therefore, the fault set can be screened according to certain rules to reduce the size of the fault set. For example, the fault multiplicity is set, or a time-series-related group fault set is generated based on the time-series correlation coefficient, and a space-related group fault set is generated based on the space-simultaneity coefficient; the time-series-related group fault set is merged with the space-related group fault set, and repeated pairwise line combinations and repeated single lines are deleted.

[0073] S200: Eliminate the related fault combinations of the devices that may fail from the first device fault set to generate a second device fault set under external disasters;

[0074] In the embodiment of the present application, the first device failure is concentrated on the device 1 that may fail. i The relevant fault combinations of are eliminated to generate the second equipment fault set F under external disasters i , expressed as:

[0075]

[0076] Where z is the fault set F i The number of fault combinations in

[0077] The elimination is to eliminate only one related fault combination of the device that may fail at a time.

[0078] It should be noted that the device l is excluded i That is, assuming that device l i Maintain normal operation without failure, that is, in the set of devices that have been evaluated as likely to fail, assume that a target device with a possible failure is operating normally, so that it exits the failure set. Only one target device is removed each time, and all devices in the failure set are sequentially traversed, and all are assumed to be operating normally, that is, exit the failure set once. This idea can help identify which devices are the most critical parts of the system. By observing the changes in system performance when different devices are removed, the sensitivity of each device to the overall performance of the system can be evaluated, and maintenance and resource allocation can be carried out more specifically, such as giving priority to ensuring the stable operation of key equipment; it also helps to evaluate the risk level under various failure scenarios and formulate corresponding response plans accordingly.

[0079] S300: Calculating a first safety margin for each fault combination in a first device fault set;

[0080] S400: Calculating a second safety margin for each fault combination in a second device fault set;

[0081] In the embodiment of the present application, if the first safety margin Then the system is stable under this fault combination;

[0082] If the first safety margin Then under this fault combination, the system becomes unstable;

[0083] If the first safety margin Then under this fault combination, the system is close to stability or close to instability;

[0084] If the second safety margin Then the system is stable under this fault combination;

[0085] If the second safety margin Then under this fault combination, the system becomes unstable;

[0086] If the second safety margin Then under this fault combination, the system is close to stability or close to instability;

[0087] Where s is the number of the fault combination f.

[0088] Specifically, the calculation method of the safety margin can be set according to existing technologies and needs, for example, by calculating the safety margin using the OLS margin and the BVS margin.

[0089] S500: Based on the first safety margin and the second safety margin, respectively calculate the safety margins of the first device failure set and the second device failure set;

[0090] In the embodiment of the present application, the first device failure set safety margin η is the minimum safety margin among all possible failure device combinations, expressed as:

[0091]

[0092] It should be noted that through steps S100, S300 and S500, the safe and stable operation of the power system under extreme external disasters, that is, the safety margin, can be obtained. The larger the safety margin, the more stable the power system operation. At this time, the scenario evaluated by the first device fault set includes all devices and device combinations that may fail.

[0093] The second equipment failure set safety margin η is the equipment l that may fail except for the equipment l that may fail. i The minimum safety margin for all equipment and equipment combinations that may fail except for

[0094]

[0095] It should be noted that through steps S200, S400 and S500, the equipment l under extreme external disasters can be obtained. i The safe and stable operation of the power system during normal operation is the safety margin. The larger the safety margin, the more stable the power system operation. At this time, the scenarios evaluated by the second device fault set include all the devices except device l i All equipment and equipment combinations that may fail.

[0096] S600: Calculate the safety margin contribution of the device that may fail based on the safety margins of the two device failure sets;

[0097] In the embodiment of the present application, based on the safety margins of the two device failure sets, the safety margin contribution c of the device that may fail is calculated. i , expressed as:

[0098] c i =η i -η

[0099] Among them, η i ≥η.

[0100] It should be noted that this step can quantitatively evaluate the equipment l i The change in the safety margin of the power system when it changes from a fault state to a normal operating state. The margin change c i Can reflect the device l i The degree of contribution to the safe and stable operation of the power system under extreme external disasters.

[0101] S700: Generate a preferred ranking table for equipment disposal based on the safety margin contribution.

[0102] In the embodiment of the present application, generating a device handling priority ranking table based on the safety margin contribution includes: sequentially traversing all devices in the first device fault set, obtaining all risk devices {l 1 ,l 2 ,…,l k}'s safety margin contribution {c 1 ,c 2 ,…,c k}, arrange the corresponding risk equipment in descending order according to the safety margin contribution, and obtain the equipment disposal priority sorting table E, which is expressed as:

[0103] E={l 1_c ,l 2_c ,…,l k_c},c 1_c ≥c 2_c ≥…≥c k_c .

[0104] It should be noted that the above steps of generating the fault set can be performed simultaneously or sequentially, such as Figure 2 As shown, namely, S100, S300 and S500, and S200, S400 and S500, the acquisition and calculation of the two parts of the fault set are performed synchronously, and can also be performed in sequence without limitation.

[0105] The above is a schematic scheme of a method for optimizing the handling of power transmission and transformation equipment under external disasters in this embodiment. It should be noted that the technical scheme of the system for optimizing the handling of power transmission and transformation equipment under external disasters and the technical scheme of the above-mentioned method for optimizing the handling of power transmission and transformation equipment under external disasters belong to the same concept. For details not described in detail in the technical scheme of the system for optimizing the handling of power transmission and transformation equipment under external disasters in this embodiment, please refer to the description of the technical scheme of the above-mentioned method for optimizing the handling of power transmission and transformation equipment under external disasters.

[0106] In this embodiment, the power transmission and transformation equipment handling optimization system under external disasters includes:

[0107] A first acquisition module, used to acquire a first device fault set under an external disaster;

[0108] A second acquisition module is used to remove the related fault combinations of the equipment that may fail from the first equipment fault set, and generate a second equipment fault set under external disasters;

[0109] A first calculation module, used to calculate a first safety margin for each fault combination in a first equipment fault set;

[0110] A second calculation module, used for calculating a second safety margin of each fault combination in a second equipment fault set;

[0111] A third calculation module, used to calculate the safety margin of the first device failure set and the second device failure set respectively;

[0112] A contribution calculation module, used for calculating the safety margin contribution of a device that may fail based on the safety margins of two device failure sets;

[0113] The sorting module is used to generate a preferred sorting table for equipment disposal based on the safety margin contribution.

[0114] The first acquisition module also includes:

[0115] Combined module, used to connect power transmission and transformation equipment that may be affected by external disasters or fail. 1 ,l 2 ,…,l k}Combined to generate the original fault set F O ;

[0116] The screening module is used to screen the original fault set to reduce the size of the fault set and generate a first device fault set F.

[0117] This embodiment further provides a computing device, which is applicable to the case of optimizing the handling of power transmission and transformation equipment under external disasters, and includes:

[0118] Memory and processor; the memory is used to store computer executable instructions, and the processor is used to execute computer executable instructions to implement the method for optimizing the handling of power transmission and transformation equipment under external disasters as proposed in the above embodiment.

[0119] This embodiment also provides a storage medium on which a computer program is stored. When the program is executed by a processor, the method for optimizing the handling of power transmission and transformation equipment under external disasters proposed in the above embodiment is implemented.

[0120] The storage medium proposed in this embodiment and the method for optimizing the handling of power transmission and transformation equipment under external disasters proposed in the above embodiment belong to the same inventive concept. The technical details not described in detail in this embodiment can be referred to the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0121] Through the above description of the implementation methods, the technicians in the relevant field can clearly understand that the present invention can be implemented by means of software and necessary general hardware, and of course can also be implemented by hardware. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ReadOnly, Memory, ROM), random access memory (Random Access Memory, RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform the methods of various embodiments of the present invention.

[0122] Example 2

[0123] Based on the previous embodiment, this embodiment provides an application case of a method for optimizing the handling of power transmission and transformation equipment under external disasters to illustrate the feasibility of our solution.

[0124] Generate the first equipment failure set F under external disasters:

[0125] The power transmission and transformation equipment that may fail due to extreme external disasters include: 1 ,l 2 ,l 3 ,l 4},but:

[0126]

[0127] Since the fault scale is within the acceptable range, there is no need to set the fault multiplicity or use fault screening methods to reduce the fault set scale. Then:

[0128]

[0129] Calculate the first safety margin of each fault combination in the first fault set F:

[0130] For all fault combinations in the fault set F, calculate their safety margins based on the existing calculation method

[0131]

[0132] Calculate the safety margin η of the first fault set F:

[0133]

[0134] Generate extreme external disasters to eliminate devices that may fail i The second fault set F i :

[0135] Connect F to device l i Relevant fault combinations are eliminated to generate the eliminated equipment l i The fault set F i , i=1,2,3,4.

[0136]

[0137] Calculate the fault set F i Safety margin for each fault combination:

[0138] For the fault set F i Calculate the safety margin for all fault combinations in i=1,2,3,4.

[0139]

[0140]

[0141] Calculate the second device failure set F i The safety margin η i :

[0142]

[0143] Computing equipment i The safety margin contribution c i :

[0144] c 1 =η 1 -η=16.41

[0145] c 2 =η 2 -η=13.86

[0146] c 3 =η 3 -η=18.19

[0147] c 4 =η 4 -η=6.62

[0148] Generate equipment disposal priority ranking table E, according to all risk equipment {l 1 ,l 2,l 3 ,l 4}'s safety margin contribution {c 1 ,c 2 ,c 3 ,c 4}, arrange the corresponding risk equipment in descending order according to the safety margin contribution, and obtain the equipment disposal priority sorting table E, which is expressed as:

[0149] E={l 3 ,l 1 ,l 2 ,l 4}

[0150] That is, under extreme external disasters, according to the importance of equipment to the safe operation of the power grid, the order of equipment disposal should be: l 3 ,l 1 ,l 2 ,l 4 .

[0151] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for optimizing the handling of power transmission and transformation equipment under external disasters, characterized in that: Obtain the first equipment failure set under external disasters; Eliminate the related fault combinations of the equipment that may fail from the first equipment fault set to generate the second equipment fault set under the external disaster; Calculate a first safety margin for each fault combination in a first equipment fault set; Calculate a second safety margin for each fault combination in a second equipment fault set; Based on the first safety margin and the second safety margin, respectively calculating safety margins of a first device failure set and a second device failure set; Based on the safety margins of the two equipment failure sets, calculating the safety margin contribution of the equipment that may fail; An equipment handling priority ranking table is generated based on the safety margin contribution.

2. The method for optimizing the handling of power transmission and transformation equipment under external disasters according to claim 1, characterized in that: The obtaining of the first device failure set under the external disaster comprises: The power transmission and transformation equipment {l1, l2, ..., l k }Combined to generate the original fault set F O , expressed as: Among them, k is the number of power transmission and transformation equipment that may be affected or fail under extreme external disasters; f represents each fault combination, with a total of Fault combination; The original fault set is screened to reduce the size of the fault set, and a first device fault set F is generated, which is expressed as: Where m is the number of fault combinations in the first device fault set F, and 3. The method for optimizing the handling of power transmission and transformation equipment under external disasters according to claim 2, characterized in that: If the first safety margin Then the system is stable under this fault combination; If the first safety margin Then under this fault combination, the system becomes unstable; If the first safety margin Under this fault combination, the system is close to stability or close to instability; If the second safety margin Then the system is stable under this fault combination; If the second safety margin Then under this fault combination, the system becomes unstable; If the second safety margin Under this fault combination, the system is close to stability or close to instability; Where s is the number of the fault combination f.

4. The method for optimizing the handling of power transmission and transformation equipment under external disasters according to claim 3, characterized in that: Focus the first device failure on the device that may fail. i The relevant fault combinations of are eliminated to generate the second equipment fault set F under external disasters i , expressed as: Where z is the fault set F i The number of fault combinations in The elimination method only eliminates the related fault combinations of one device that may fail each time.

5. The method for optimizing the handling of power transmission and transformation equipment under external disasters according to claim 4, characterized in that: Based on the first safety margin and the second safety margin, safety margins of the first device failure set and the second device failure set are calculated respectively, wherein: The first equipment failure set safety margin η is the minimum safety margin among all possible equipment combinations that may fail, and is expressed as: The second device failure set safety margin n is the device l that may fail except for the device l that may fail. i The minimum safety margin for all equipment and equipment combinations that may fail except for 6. The method for optimizing the handling of power transmission and transformation equipment under external disasters according to claim 5, characterized in that: Based on the safety margins of the two equipment failure sets, calculate the safety margin contribution c of the equipment that may fail i , expressed as: c i =the i -or Among them, η i ≥η; Generating a preferred ranking table of equipment disposal based on the safety margin contribution includes: Traverse all devices in the first device failure set in turn and find all risk devices {l1, l2, ..., l k The safety margin contribution of {c1, c2, …, c k }, arrange the corresponding risk equipment in descending order according to the safety margin contribution, and obtain the equipment disposal priority sorting table E, which is expressed as: E={l 1_c ,l 2_c ,…,l k_c },c 1_c ≥c 2_c ≥…≥c k_c 。 7. A system using the method for optimizing the handling of power transmission and transformation equipment under external disasters as described in any one of claims 1 to 6, characterized in that: include: A first acquisition module, used to acquire a first device fault set under an external disaster; A second acquisition module is used to remove the related fault combinations of the equipment that may fail from the first equipment fault set, and generate a second equipment fault set under external disasters; A first calculation module, used to calculate a first safety margin for each fault combination in a first equipment fault set; A second calculation module, used for calculating a second safety margin of each fault combination in a second equipment fault set; A third calculation module, configured to calculate the safety margins of the first device failure set and the second device failure set respectively based on the first safety margin and the second safety margin; A contribution calculation module, used to calculate the safety margin contribution of the device that may fail based on the safety margins of two device failure sets; A sorting module is used to generate a preferred sorting table for equipment disposal based on the safety margin contribution.

8. The power transmission and transformation equipment handling optimization system under external disasters according to claim 7, characterized in that: The first acquisition module includes: The combined module is used to connect the power transmission and transformation equipment {l1,l2,…,l k }Combined to generate the original fault set; The screening module is used to screen the original fault set to reduce the size of the fault set and generate a first device fault set.

9. An electronic device, comprising: Memory and processor; The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the method for optimizing the handling of power transmission and transformation equipment under external disasters described in any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the method for optimizing the handling of power transmission and transformation equipment under external disasters as described in any one of claims 1 to 6.

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