A local power grid partition starting method and device, electronic equipment and storage medium

Abstract

The application discloses a local power grid partition starting method and device, electronic equipment and a storage medium, and is used for solving the technical problem that the survival ability of important user local power grid is weak when facing external attacks. The application comprises the following steps: acquiring power grid operation state flow data of a current power grid in real time; acquiring a local power grid partition of the power grid, and acquiring isolated network operation state flow data of the local power grid partition; acquiring an external attack fault set formed by external attacks corresponding to the power grid operation state flow data and the isolated network operation state flow data; the external attack fault set comprises a plurality of external attack faults; calculating a power grid vulnerability index of the power grid according to the external attack fault set and the power grid operation state flow data; calculating a partition vulnerability index of the local power grid partition according to the external attack fault set and the isolated network operation state flow data; and starting the local power grid partition when the partition vulnerability index is smaller than the power grid vulnerability index.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power grid partition starting, and in particular to a local power grid partition starting method and device, electronic equipment and a storage medium. BACKGROUND

[0002] To cope with the traditional power safety operation risks caused by power system equipment failure, natural disasters and the like, the power system has established a set of power grid operation risk control system and emergency management system. However, under the new situation, in order to cope with network attacks, electromagnetic and graphite bombs and other new attack and destruction methods under extreme conditions, the breadth, depth and difficulty of power safety risk prevention and control have increased significantly, to some extent, the existing traditional power grid operation state has been overturned, and the related risk assessment methods, prevention and control technologies, management mechanisms and emergency systems all need to be further researched and improved, especially how to improve the survival ability of important users under extreme conditions needs to be further researched.

[0003] In order to reduce the influence range of important user power outage under extreme conditions as much as possible, the local power grid of important users can be operated in partition to reduce the size of the power grid, actively decouple the large power grid physically, reduce the attack surface of external attacks, and improve the ultimate survival ability of the local power grid of important users, but the research on what extent the power grid is destroyed to start the partition plan of the local power grid containing important users is still blank. SUMMARY

[0004] The present application provides a local power grid partition starting method, device, electronic equipment and storage medium, which is used to solve the technical problem of weak survival ability of important user local power grid when facing external attacks.

[0005] The present application provides a local power grid partition starting method, comprising:

[0006] Real-time acquisition of power grid operation state power flow data of the current power grid;

[0007] Acquisition of local power grid partition of the power grid, and acquisition of isolated network operation state power flow data of the local power grid partition;

[0008] Acquisition of external attack fault set formed by external attacks corresponding to the power grid operation state power flow data and the isolated network operation state power flow data; the external attack fault set comprises a plurality of external attack faults;

[0009] Calculation of power grid vulnerability index of the power grid according to the external attack fault set and the power grid operation state power flow data;

[0010] Calculation of partition vulnerability index of the local power grid partition according to the external attack fault set and the isolated network operation state power flow data;

[0011] start the local power grid partition when the partition vulnerability index is less than the power grid vulnerability index.

[0012] Optionally, the step of calculating the power grid vulnerability index of the power grid according to the external attack fault set and the power grid operating state power flow data comprises:

[0013] According to the power grid operating state power flow data, the first load loss amount of each preset important user caused by each external attack fault is calculated;

[0014] The attack probability base value coefficient corresponding to each preset important user is obtained;

[0015] According to the first load loss amount and the attack probability base value coefficient, the power grid vulnerability index of the power grid is calculated.

[0016] Optionally, the step of calculating the partition vulnerability index of the local power grid partition according to the external attack fault set and the islanded grid operating state power flow data comprises:

[0017] According to the islanded grid operating state power flow data, the second load loss amount of each preset important user caused by each external attack fault is calculated;

[0018] According to the second load loss amount and the attack probability base value coefficient, the partition vulnerability index of the local power grid partition is calculated.

[0019] Optionally, the external attack comprises one or more of a network attack, an electromagnetic attack, and a graphite bomb attack.

[0020] The application also provides a local power grid partition starting device, comprising:

[0021] A power grid operating state power flow data acquisition module is configured to acquire power grid operating state power flow data of a current power grid in real time;

[0022] An islanded grid operating state power flow data acquisition module is configured to acquire a local power grid partition of the power grid and acquire islanded grid operating state power flow data of the local power grid partition;

[0023] An external attack fault set acquisition module is configured to acquire an external attack fault set formed by external attacks corresponding to the power grid operating state power flow data and the islanded grid operating state power flow data; the external attack fault set comprises a plurality of external attack faults;

[0024] A power grid vulnerability index calculation module is configured to calculate a power grid vulnerability index of the power grid according to the external attack fault set and the power grid operating state power flow data;

[0025] A partition vulnerability index calculation module is configured to calculate a partition vulnerability index of the local power grid partition according to the external attack fault set and the islanded grid operating state power flow data.

[0026] A local power grid partition starting module is configured to start the local power grid partition when the partition vulnerability index is less than the power grid vulnerability index.

[0027] Optionally, the power grid vulnerability index calculation module comprises:

[0028] A first load loss amount calculation sub-module is configured to calculate a first load loss amount of a preset important user caused by each external attack fault according to the power grid operating state power flow data.

[0029] An attack probability base value coefficient acquisition sub-module is configured to acquire an attack probability base value coefficient corresponding to each preset important user.

[0030] A power grid vulnerability index calculation sub-module is configured to calculate a power grid vulnerability index of the power grid according to the first load loss amount and the attack probability base value coefficient.

[0031] Optionally, the partition vulnerability index calculation module comprises:

[0032] A second load loss amount calculation sub-module is configured to calculate a second load loss amount of the preset important user caused by each external attack fault according to the islanded grid operating state power flow data.

[0033] A partition vulnerability index calculation sub-module is configured to calculate a partition vulnerability index of the local power grid partition according to the second load loss amount and the attack probability base value coefficient.

[0034] Optionally, the external attack comprises one or more of a network attack, an electromagnetic attack and a graphite bomb attack.

[0035] The application further provides an electronic device, which comprises a processor and a memory.

[0036] The memory is configured to store program code and transmit the program code to the processor.

[0037] The processor is configured to execute the local power grid partition starting method according to the instructions in the program code.

[0038] The application further provides a computer readable storage medium, which is configured to store program code, and the program code is configured to execute the local power grid partition starting method.

[0039] From the above technical solution can be seen, the present application has the following advantages: the present application by when detecting external attack, obtain external attack fault set; external attack fault set includes several external attack faults; real-time acquisition of current power grid power grid operation state flow data; obtain the local power grid partition of power grid, and obtain the island operation state flow data of local power grid partition; according to external attack fault set and power grid operation state flow data calculate power grid vulnerability index; according to external attack fault set and island operation state flow data calculate partition vulnerability index of local power grid partition; when the partition vulnerability index is less than the power grid vulnerability index, start local power grid partition. Make the power grid in the face of external attack can actively start local power grid partition of island operation, thereby weakening the influence of external attack on local power grid partition, improve the survivability of important user local power grid partition. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0041] Figure 1 A step flow chart of a local power grid partition starting method provided by the embodiment of the present application;

[0042] Figure 2 A step flow chart of a local power grid partition starting method provided by another embodiment of the present application;

[0043] Figure 3 An important user local power grid partition operation schematic diagram provided by the embodiment of the present application;

[0044] Figure 4 A structure block diagram of a local power grid partition starting device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0045] The embodiment of the present application provides a local power grid partition starting method, device, electronic equipment and storage medium, which is used to solve the technical problem that the survivability of important user local power grid is weak when facing external attack.

[0046] In order to make the application purposes, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the embodiments described below are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0047] Please refer to Figure 1 , Figure 1 A step flow chart of a local power grid partition starting method provided by the embodiment of the present application.

[0048] The local power grid partition starting method provided by the present application can specifically include the following steps:

[0049] Step 101, real-time acquisition of power grid operation state power flow data of a current power grid;

[0050] In the embodiment of the present application, the PSD-BPA power flow data of the current power grid operation state can be acquired by the power grid comprehensive defense system as the power grid operation state power flow data of the current power grid.

[0051] Step 102, acquisition of a local power grid partition of the power grid and acquisition of island operation state power flow data of the local power grid partition;

[0052] In the embodiment of the present application, the island operation state power flow data of the local power grid partition can be formed by adjusting the related sections and power sources of the local power grid partition.

[0053] Step 103, acquisition of an external attack fault set formed by external attacks corresponding to the power grid operation state power flow data and the island operation state power flow data; the external attack fault set includes a plurality of external attack faults;

[0054] In the embodiment of the present application, the external attacks suffered by the power grid in extreme cases mainly include network attacks, electromagnetic attacks, graphite bomb attacks and the like. The network attacks mainly destroy or control the power monitoring network system such as the dispatching automation system, the relay protection and the security and stability control system through the network intrusion mode. The electromagnetic attacks mainly cause damage to the electronic elements of the power grid secondary equipment through the release of electromagnetic pulses by means of electromagnetic pulse bombs and the like. The graphite bomb attacks mainly cause short circuit of the power grid primary equipment through the release of conductive fiber nets.

[0055] The above four kinds of external attacks can bring two kinds of serious fault modes to the power grid: all-station voltage loss fault and transmission section line fault.

[0056] After obtaining the power grid operation state power flow data and the islanded grid operation state power flow data, the external attack failure caused by the corresponding external attack can be counted to form an external attack failure set.

[0057] In step 104, the grid vulnerability index of the power grid is calculated according to the external attack failure set and the power grid operation state power flow data.

[0058] After obtaining the external attack failure set and the power grid operation state power flow data, the grid vulnerability index of the power grid can be calculated by using the external attack failure set and the power grid operation state power flow data.

[0059] In step 105, the partition vulnerability index of the local power grid partition is calculated according to the external attack failure set and the islanded grid operation state power flow data.

[0060] After obtaining the external attack failure set and the islanded grid operation state power flow data, the partition vulnerability index of the local power grid partition can be calculated by using the external attack failure set and the islanded grid operation state power flow data.

[0061] In step 106, when the partition vulnerability index is less than the grid vulnerability index, the local power grid partition is started.

[0062] After obtaining the grid vulnerability index and the partition vulnerability index, whether to start the local power grid partition can be determined according to the size relationship between the two.

[0063] In a specific implementation, when the partition vulnerability index is less than the grid vulnerability index, it represents that the local power grid partition has stronger limit survival ability than the interconnected operation state in an extreme case. At this time, the local power grid partition can be isolated from the power grid to run as an islanded grid.

[0064] The present application detects external attacks, obtains an external attack failure set, and calculates the grid vulnerability index of the power grid according to the external attack failure set and the power grid operation state power flow data, and calculates the partition vulnerability index of the local power grid partition according to the external attack failure set and the islanded grid operation state power flow data. When the partition vulnerability index is less than the grid vulnerability index, the local power grid partition is started. The power grid can actively start the islanded grid operation of the local power grid partition when facing external attacks, thereby weakening the influence of external attacks on the local power grid partition and improving the survival ability of the important user local power grid partition.

[0065] Please refer to Figure 2 , Figure 2A step flow chart of a local power grid partition starting method is provided for another embodiment of the application. Specifically, it can include the following steps:

[0066] In step 201, the power grid operation state power flow data of the current power grid is acquired in real time.

[0067] In the embodiment of the application, the operation state of the power grid changes from time to time, and the external attack also has a continuous nature. The operation state of the power grid can change rapidly due to the external attack. Therefore, the operation state of the power grid at each time is acquired by the power grid operation state power flow data of the current power grid. Thus, the operation state set S of the power grid in the extreme case is obtained as follows:

[0068]

[0069] wherein, is the initial operation state of the power grid, which is generally the operation state of the power grid before the external attack. is the operation state of the power grid after the nth external attack.

[0070] In step 202, the local power grid partition of the power grid is acquired, and the isolated grid operation state power flow data of the local power grid partition is acquired.

[0071] In the embodiment of the application, the isolated grid operation state power flow data of the local power grid partition can be obtained by adjusting the data S related section and power supply according to the local power grid partition scheme. The isolated grid operation state set L of the local power grid partition is obtained as follows:

[0072]

[0073] wherein, is the initial isolated grid operation state of the local power grid partition, is the isolated grid operation state of the local power grid partition after the nth external attack.

[0074] In step 203, the external attack fault set caused by the external attack corresponding to the power grid operation state power flow data and the isolated grid operation state power flow data is acquired. The external attack fault set includes a plurality of external attack faults.

[0075] After the power grid operation state power flow data and the isolated grid operation state power flow data are acquired, the external attack faults caused by the corresponding external attack can be counted to form the external attack fault set.

[0076] In the embodiment of the application, the power grid operation state (i=1, 2,..., n) and the isolated grid operation state (i=1, 2,..., n) correspond to the external attack fault set caused by all external attacks. may be:

[0077]

[0078] wherein, is the j (j = 1, 2,..., m) external attack failure caused by the external attack to the i-th power grid operating state and island operating state.

[0079] In step 204, according to the power grid operating state power flow data, the first load loss amount of each preset important user caused by each external attack failure is calculated;

[0080] In the embodiment of the application, the first load loss amount of each preset important user caused by each external attack failure can be calculated according to the power grid operating state power flow data. The same important user may have different first load loss amounts under different power grid operating states. Different important users may also have different first load loss amounts under the same power grid operating state.

[0081] In the embodiment of the application, the important user can refer to a power facility, such as a substation, etc.

[0082] In step 205, the attack probability base value coefficient corresponding to each preset important user is obtained;

[0083] Different important users receive different attack probabilities, and the higher the value of the external attack target, the higher the attack probability base value coefficient.

[0084] In step 206, the power grid vulnerability index of the power grid is calculated according to the first load loss amount and the attack probability base value coefficient;

[0085] After obtaining the first load loss amount of each important user and the corresponding attack probability base value coefficient, the first load loss amount of each important user and the corresponding attack probability base value coefficient can be used to calculate the power grid vulnerability index of the power grid.

[0086] In one example, considering that the important user is a high-value attack target of external attack, the external attack has intentionality and pertinence, and the attack target is to cause the greatest important user loss, therefore, in the embodiment of the application, the first three important users with the greatest first load loss amount caused by the next external attack can be taken as the power grid vulnerability index of the current power grid attacked by external attack , that is,

[0087]

[0088] wherein, is the power grid operating state the first load loss amount of the corresponding important user. is the attack probability base value coefficient. representative array maximum value representative array second maximum value representative array third maximum value

[0089] wherein,

[0090] grid operating state the first load loss of the jth important user

[0091] Step 207, according to the island grid operating state power flow data, calculating the second load loss of the preset important user caused by each external attack fault;

[0092] In the embodiment of the application, the second load loss of the preset important user caused by each external attack fault can be calculated according to the island grid operating state power flow data. The same important user can have different second load losses under different island grid operating states. Different important users can also have different second load losses under the same island grid operating state.

[0093] Step 208, according to the second load loss and the attack probability base value coefficient, calculating the partition vulnerability index of the local grid partition;

[0094] After obtaining the second load loss of each important user and the corresponding attack probability base value coefficient, the second load loss of each important user and the corresponding attack probability base value coefficient can be used to calculate the partition vulnerability index of the local grid partition.

[0095] wherein, the first load loss of the important user caused by the next external attack can be taken as the top three as the grid vulnerability index of the current grid under external attack that is:

[0096]

[0097] wherein, island grid operating state the second load loss of the corresponding important user

[0098] wherein,

[0099] grid operating state the second load loss of the jth important user

[0100] Step 209, when the partition vulnerability index is less than the grid vulnerability index, starting the local grid partition.

[0101] After obtaining the grid vulnerability index and the partition vulnerability index, whether to start the local grid partition can be judged according to the size between the two.

[0102] In the specific implementation, when the partition vulnerability index is less than the grid vulnerability index, it represents that the local grid partition has stronger limit survival ability than the networking running state in the extreme case. At this time, the local grid partition can be isolated from the grid to operate as an isolated grid.

[0103] In actual application, the system can actively implement splitting, or remind the dispatching operation personnel to immediately start the partition plan of the local grid, to adjust the unit output in the region as soon as possible, control the load in the region, control the power of the external tie line to be substantially zero, actively implement splitting, and avoid the next attack to cause the local grid to lose a large amount of important load.

[0104] The application obtains the external attack fault set when detecting the external attack; the external attack fault set includes a plurality of external attack faults; real-time obtains the grid operation state power flow data of the current grid; obtains the local grid partition of the grid, and obtains the isolated grid operation state power flow data of the local grid partition; calculates the grid vulnerability index of the grid according to the external attack fault set and the grid operation state power flow data; calculates the partition vulnerability index of the local grid partition according to the external attack fault set and the isolated grid operation state power flow data; when the partition vulnerability index is less than the grid vulnerability index, starting the local grid partition. The grid can actively start the isolated grid operation of the local grid partition when facing the external attack, thereby weakening the influence of the external attack on the local grid partition, and improving the survival ability of the important user local grid partition.

[0105] For the convenience of understanding, the embodiments of the application are described below through specific examples:

[0106] Please refer to Figure 3 , Figure 3 An important user local grid partition running schematic diagram provided by the embodiment of the application.

[0107] As shown in the grid of Figure 3 , A~P are 220kV substations, wherein, A~D are important loads (A is 50MW important user a, B is 80MW important user b, C is 150MW important user c, and D is 20MW important user d), E~P are conventional loads, GEN is a 600MW power plant (power source), and Y and Z are 500kV substations; the nodes A~E, G and the power source GEN are selected to construct the important user local grid partition. The full connection networking running state of the grid when not suffering from the external attack is defined as , its corresponding local power grid partition isolated grid operation state is ; networking operation state destroyed by external attacks 220kV substation O form networking operation state , then its corresponding important user local power grid partition isolated grid operation state is (local power grid partition internal network architecture is not destroyed, consistent with ). Considering that the 500kV substation is a high-value attack target of external attacks, the attack probability base value coefficient of 500kV equipment is 0.8, and the attack probability base value coefficient of 220kV equipment is 0.2.

[0108] Step S1: Through the power grid comprehensive defense system, real-time acquisition of power grid flow topology information, generation of networking operation state and and the corresponding local power grid partition operation state and flow calculation data.

[0109] Step S2: Considering the single plant station full station loss of voltage and 220kV / 500kV same tower line full trip of local power grid partition 220kV / 500kV substation node two more serious fault types, establish external attack fault set.

[0110] Step S3: Calculate the attack vulnerability index of networking operation state and partition operation state :

[0111]

[0112] Networking operation mode , because it is a full wiring operation mode, the network structure is strong, a single external attack does not cause the loss of important user load, and the survival ability to cope with external attacks is strong.

[0113] Networking operation mode , after the 220kV substation O is destroyed by external attacks and causes full station loss of voltage, the important user load and the adjacent area are mainly supplied by the 500kV substation Z, once the 500kV substation Z and the nearby hub channel are attacked by external attacks, the supply area under the isolated grid is passive, and the power supply in the isolated grid is less, which will lead to frequency instability and loss of a large amount of load. Therefore, the survival ability of networking operation mode to cope with external attacks is weak.

[0114] Local power grid partition operation mode / Only when the local power grid is subjected to external attack in the local power grid partition will important user load be lost, so the probability of being attacked is low, and the 'day ring' network structure has certain survivability when coping with external attack.

[0115] Step S4: judging whether the important user local power grid needs to enter the active partition operation state.

[0116] For the networking operation state , if , it is considered that the limit survivability of the important user in the networking operation mode under extreme conditions is strong, and it is suggested that the local power grid remains in the networking operation.

[0117] For the networking operation state , , it is considered that the limit survivability of the local power grid after active partition operation under extreme conditions is strong, and the dispatching operation personnel should immediately start the partition plan of the local power grid, adjust the unit output in the region as soon as possible, control the load in the region, control the power of the external tie line to be substantially zero, implement active splitting, and avoid the loss of a large amount of important load of the local power grid caused by the next attack.

[0118] Please refer to Figure 4 , Figure 4 for the structure block diagram of the local power grid partition starting device provided by the embodiment of the application.

[0119] The embodiment of the application provides a local power grid partition starting device, which comprises:

[0120] A power grid operation state power flow data acquisition module 401 is used for acquiring the power grid operation state power flow data of the current power grid in real time.

[0121] An isolated network operation state power flow data acquisition module 402 is used for acquiring the local power grid partition of the power grid and acquiring the isolated network operation state power flow data of the local power grid partition.

[0122] An external attack fault set acquisition module 403 is used for acquiring the external attack fault set formed by external attack corresponding to the power grid operation state power flow data and the isolated network operation state power flow data; the external attack fault set comprises a plurality of external attack faults.

[0123] A power grid vulnerability index calculation module 404 is used for calculating the power grid vulnerability index of the power grid according to the external attack fault set and the power grid operation state power flow data.

[0124] A partition vulnerability index calculation module 405 is used for calculating the partition vulnerability index of the local power grid partition according to the external attack fault set and the isolated network operation state power flow data.

[0125] The local power grid partition starting module 406 is configured to start the local power grid partition when the partition vulnerability index is less than the power grid vulnerability index.

[0126] In the embodiment of the present application, the power grid vulnerability index calculation module 404 comprises:

[0127] The first load loss amount calculation sub-module is configured to calculate the first load loss amount of the preset important user caused by each external attack fault according to the power grid operation state power flow data;

[0128] The attack probability base value coefficient acquisition sub-module is configured to acquire the attack probability base value coefficient corresponding to each preset important user;

[0129] The power grid vulnerability index calculation sub-module is configured to calculate the power grid vulnerability index of the power grid according to the first load loss amount and the attack probability base value coefficient.

[0130] In the embodiment of the present application, the partition vulnerability index calculation module 405 comprises:

[0131] The second load loss amount calculation sub-module is configured to calculate the second load loss amount of the preset important user caused by each external attack fault according to the isolated grid operation state power flow data;

[0132] The partition vulnerability index calculation sub-module is configured to calculate the partition vulnerability index of the local power grid partition according to the second load loss amount and the attack probability base value coefficient.

[0133] In the embodiment of the present application, the external attack comprises one or more of the following: network attack, electromagnetic attack, and graphite bomb attack.

[0134] The embodiment of the present application further provides an electronic device, which comprises a processor and a memory:

[0135] The memory is configured to store program code and transmit the program code to the processor;

[0136] The processor is configured to execute the local power grid partition starting method according to the instructions in the program code.

[0137] The embodiment of the present application further provides a computer readable storage medium, which is configured to store program code, and the program code is configured to execute the local power grid partition starting method.

[0138] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, and will not be described here.

[0139] The various embodiments described in this specification are intended to be illustrative only and in no way limit the scope of the application. One skilled in the art will readily recognize from the disclosure herein, possible alternative techniques within the scope of the application. Accordingly, the embodiments described in this specification are set forth without any loss of generality to, and without imposing limitations upon, the claimed invention.

[0140] Those skilled in the art will appreciate that embodiments of the present application can be readily used as a method, apparatus, or computer program product. Accordingly, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects all generally referred to herein as a "circuit" or "module." Furthermore, the present application can take the form of a computer program product on a computer-readable storage medium having computer program code embodied in the medium.

[0141] Embodiments of the present application are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processing system or other programmable data processing terminal apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal apparatus, create means for implementing the functions specified in the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams. Figure 1 means for performing each of the functions specified in the flowchart illustrations and / or block diagrams.

[0142] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the functions specified in the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams. Figure 1 means for performing each of the functions specified in the flowchart illustrations and / or block diagrams.

[0143] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal apparatus to cause a series of operational steps to be performed on the computer or other programmable terminal apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal apparatus provide steps for implementing the functions specified in the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams. Figure 1 means for performing each of the functions specified in the flowchart illustrations and / or block diagrams.

[0144] While the preferred embodiments of the application have been described, additional variations and modifications can be made to the embodiments by those of skill in the art once they have the benefit of the present disclosure. Therefore, the appended claims are intended to encompass within their scope all possible embodiments of the application. What is claimed is:

[0145] Finally, it is to be understood that the phraseology or terminology employed herein, such as "including" and "comprising," or other similar forms, is intended to be typically, open-ended including one or more elements, steps, integers or processes. As such, the term "including" when used in this specification is taken to expressly mean the term "including" but not to the exclusion of any other methodologies, materials, or steps. In addition, it should be understood that where the application or any embodiment is described or exemplified as comprising, including, or comprising a particular element or step, such description or exemplification is taken to be open-ended, including one or more additional such elements or steps.

[0146] The above description is provided as an enabling teaching of the application. The description is not intended to be exhaustive or to limit the application to the precise form disclosed. Modifications or equivalents will be apparent to practitioners skilled in the art and may be made without departing from the spirit and scope of the application.

Claims

1. A method for local grid partitioned start-up, the method comprising: The method comprises the following steps: obtaining power grid operation state flow data of a current power grid in real time; obtaining a local power grid partition of the power grid, and obtaining isolated network operation state flow data of the local power grid partition; obtaining an external attack fault set formed by external attacks corresponding to the power grid operation state flow data and the isolated network operation state flow data; the external attack fault set comprises a plurality of external attack faults; calculating a power grid vulnerability index of the power grid according to the external attack fault set and the power grid operation state flow data; calculating a partition vulnerability index of the local power grid partition according to the external attack fault set and the isolated network operation state flow data; starting the local power grid partition when the partition vulnerability index is less than the power grid vulnerability index; wherein the step of calculating the power grid vulnerability index of the power grid according to the external attack fault set and the power grid operation state flow data comprises: calculating a first load loss amount of a preset important user caused by each external attack fault according to the power grid operation state flow data; obtaining an attack probability base value coefficient corresponding to each preset important user; calculating the power grid vulnerability index of the power grid according to the first load loss amount and the attack probability base value coefficient; wherein the step of calculating the partition vulnerability index of the local power grid partition according to the external attack fault set and the isolated network operation state flow data comprises: calculating a second load loss amount of the preset important user caused by each external attack fault according to the isolated network operation state flow data; calculating the partition vulnerability index of the local power grid partition according to the second load loss amount and the attack probability base value coefficient.

2. The method of claim 1, wherein, The external attack comprises one or more of a network attack, an electromagnetic attack, and a graphite bomb attack.

3. A local grid partition start-up apparatus, characterized by, The method comprises the following steps: a power grid operation state flow data acquisition module is configured to obtain power grid operation state flow data of a current power grid in real time; an isolated network operation state flow data acquisition module is configured to obtain a local power grid partition of the power grid, and obtain isolated network operation state flow data of the local power grid partition; an external attack fault set acquisition module is configured to obtain an external attack fault set formed by external attacks corresponding to the power grid operation state flow data and the isolated network operation state flow data; the external attack fault set comprises a plurality of external attack faults; a power grid vulnerability index calculation module is configured to calculate a power grid vulnerability index of the power grid according to the external attack fault set and the power grid operation state flow data; a partition vulnerability index calculation module is configured to calculate a partition vulnerability index of the local power grid partition according to the external attack fault set and the isolated network operation state flow data; a local power grid partition starting module is configured to start the local power grid partition when the partition vulnerability index is less than the power grid vulnerability index; wherein the power grid vulnerability index calculation module comprises: The first load loss amount calculation submodule is configured to calculate a first load loss amount of each preset important user caused by each external attack fault according to the power grid operation state power flow data; The attack probability base value coefficient acquisition submodule is configured to acquire an attack probability base value coefficient corresponding to each preset important user; The power grid vulnerability index calculation submodule is configured to calculate a power grid vulnerability index of the power grid according to the first load loss amount and the attack probability base value coefficient; The partition vulnerability index calculation module includes: The second load loss amount calculation submodule is configured to calculate a second load loss amount of each preset important user caused by each external attack fault according to the islanded power grid operation state power flow data; The partition vulnerability index calculation submodule is configured to calculate a partition vulnerability index of the local power grid partition according to the second load loss amount and the attack probability base value coefficient.

4. The apparatus of claim 3, wherein, The external attack includes one or more of a network attack, an electromagnetic attack, and a graphite bomb attack.

5. An electronic device, comprising: The device includes a processor and a memory: The memory is configured to store program code and transmit the program code to the processor; The processor is configured to execute the local power grid partition starting method according to the instructions in the program code.

6. A computer-readable storage medium, characterized in that, The computer readable storage medium is configured to store program code, and the program code is configured to execute the local power grid partition starting method.

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