Electric power system facility damage degree assessment method and device

Abstract

According to the electric power system facility damage degree assessment method and device provided by the invention, after the power generation facility damage index, the power transmission facility damage index, the power transformation facility damage index, the power distribution facility damage index and the dispatching system damage index of the electric power system are determined, the facility comprehensive damage index of the electric power system can be determined based on the indexes; and determining a comprehensive damage grade corresponding to the comprehensive damage index of the facility according to a pre-constructed damage grade grading system. According to the method, the facility damage degree of the power system can be comprehensively, accurately and quickly evaluated, and a scientific basis is provided for recovery and reconstruction of the power system.

Description

Technical Field

[0001] This application relates to the field of system damage assessment technology, and in particular to a method and apparatus for assessing the degree of damage to power system facilities. Background Technology

[0002] During the operation of a power system, various factors such as natural disasters, human-caused damage, and equipment aging can lead to varying degrees of damage to different facilities. This damage not only affects the normal operation of the power system but can also have a serious impact on society's production and daily life.

[0003] Traditional methods for assessing the extent of damage to power system facilities often rely on manual inspections and simple statistical methods. Manual inspections are time-consuming and labor-intensive, and struggle to comprehensively and promptly identify damage. Simple statistical methods, on the other hand, lack scientific rigor and systematic approach, making it difficult to accurately reflect the actual degree of damage.

[0004] Furthermore, existing power system damage assessment studies primarily focus on natural disaster scenarios such as typhoons and earthquakes. Their mainstream approach utilizes facility vulnerability curves or finite element models to extrapolate the probability of equipment damage and the expected system damage under different disaster intensities based on the spatial distribution of disaster intensity. Such studies tend to emphasize pre-event or in-event risk prediction, failing to provide a quantifiable and actionable assessment of the actual functional, capacity, and structural deficiencies of the power system after an actual event. This results in a difficulty in quickly understanding and locating the overall health status of the system after actual damage occurs, weakening the effectiveness and relevance of emergency response decisions. Summary of the Invention

[0005] The purpose of this application is to at least address one of the aforementioned technical deficiencies, particularly the technical deficiency that existing methods for assessing the extent of damage to power system facilities are unable to comprehensively and promptly detect the damage and accurately reflect the actual degree of damage.

[0006] This application provides a method for assessing the degree of damage to power system facilities, the method comprising:

[0007] Determine the damage index of power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching system in the power system;

[0008] Based on the power generation facility damage index, the transmission facility damage index, the substation facility damage index, the distribution facility damage index, and the dispatch system damage index, the comprehensive facility damage index of the power system is determined;

[0009] Based on a pre-constructed damage level classification system, the comprehensive damage level corresponding to the comprehensive damage index of the power system facilities is determined.

[0010] Optionally, determining the damage index of power generation facilities in the power system includes:

[0011] Determine the total number of generator units in the area where the power system is located;

[0012] If the total number of generator sets is 0, then the power generation facility damage index of the power system is determined to be 0;

[0013] If the total number of generator sets is at least one, the power generation facility damage index of the power system is determined based on the first weight, damage status, and rated capacity of the at least one generator set.

[0014] Optionally, determining the power system transmission facility damage index includes:

[0015] The voltage levels of multiple transmission circuits in the area where the power system is located are statistically analyzed, and each transmission circuit is classified into different levels of lines based on the voltage levels.

[0016] Determine the second weight of different levels of lines, the total length of damaged lines, and the total length of all lines;

[0017] The power transmission facility damage index of the power system is determined based on the second weight of different levels of lines, the total length of damaged lines, and the total length of all lines.

[0018] Optionally, determining the substation damage index of the power system includes:

[0019] The substations in the area where the power system is located are classified into different substation levels based on their substation levels.

[0020] Determine the third weight of substations of different levels, the total capacity of damaged substations, and the total capacity of all substations;

[0021] The substation facility damage index of the power system is determined based on the third weight of substations of different levels, the total damaged capacity of substations, and the total capacity of all substations.

[0022] Optionally, determining the power system's distribution facility damage index includes:

[0023] Determine the number of distribution transformer substations in the area where the power system is located, the damage status of the transformers in each distribution transformer substation, and the rated capacity of the transformers.

[0024] The power system's power distribution facility damage index is determined based on the number of distribution substations, the damage status of the transformers in each distribution substation, and the rated capacity of the transformers.

[0025] Optionally, determining the dispatch system damage index of the power system includes:

[0026] The total number of power plants, substations, converter stations, and distribution main stations within the power system area is counted, along with the total number of power plants, substations, converter stations, and distribution main stations that are out of contact with the dispatch center.

[0027] The power system dispatch system damage index is determined based on the sum of the first quantity and the sum of the second quantity.

[0028] Optionally, determining the comprehensive facility damage index of the power system based on the power generation facility damage index, the transmission facility damage index, the substation facility damage index, the distribution facility damage index, and the dispatch system damage index includes:

[0029] The weights of the first indicator corresponding to the damage index of power generation facilities, the second indicator corresponding to the damage index of power transmission facilities, the third indicator corresponding to the damage index of substation facilities, the fourth indicator corresponding to the damage index of distribution facilities, and the fifth indicator corresponding to the damage index of dispatching system are determined.

[0030] The comprehensive damage index of the power system facilities is determined based on the damage index of the power generation facilities and the corresponding first indicator weight, the damage index of the power transmission facilities and the corresponding second indicator weight, the damage index of the substation facilities and the corresponding third indicator weight, the damage index of the power distribution facilities and the corresponding fourth indicator weight, and the damage index of the dispatch system and the corresponding fifth indicator weight.

[0031] Optionally, determining the weights of the first indicator corresponding to the power generation facility damage indicator, the second indicator corresponding to the transmission facility damage indicator, the third indicator corresponding to the substation facility damage indicator, the fourth indicator corresponding to the distribution facility damage indicator, and the fifth indicator corresponding to the dispatch system damage indicator includes:

[0032] The relative importance of the damage indicators of power generation facilities, power transmission facilities, power substation facilities, power distribution facilities, and dispatching system is obtained when multiple experts make pairwise comparisons. Based on the relative importance, multiple sets of first intuition fuzzy judgment matrices are constructed.

[0033] Consistency checks are performed on each group of first intuition fuzzy judgment matrices, and those that do not meet the consistency check are corrected until all first intuition fuzzy judgment matrices meet the consistency check, thus obtaining multiple groups of second intuition fuzzy judgment matrices.

[0034] Multiple sets of second intuitionistic fuzzy judgment matrices are transformed into a set of intuitionistic fuzzy weight matrices. After determining the expert weights of each expert, the first indicator weight of the power generation facility damage index, the second indicator weight of the power transmission facility damage index, the third indicator weight of the substation facility damage index, the fourth indicator weight of the distribution facility damage index, and the fifth indicator weight of the dispatch system damage index are determined based on the intuitionistic fuzzy weight matrix and the expert weights.

[0035] Optionally, determining the comprehensive damage level corresponding to the comprehensive damage index of the power system's facilities based on a pre-constructed damage level classification system includes:

[0036] Based on the pre-constructed damage level classification system, determine the level range corresponding to different damage levels;

[0037] The comprehensive damage index of the facilities is compared with different level ranges to determine the target level range corresponding to the comprehensive damage index of the facilities;

[0038] The comprehensive damage level corresponding to the comprehensive damage index of the power system facilities is determined based on the target level range.

[0039] This application also provides a device for assessing the degree of damage to power system facilities, including:

[0040] Various index determination modules are used to determine the damage index of power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching system in the power system;

[0041] The comprehensive index determination module is used to determine the comprehensive facility damage index of the power system based on the power generation facility damage index, the transmission facility damage index, the substation facility damage index, the distribution facility damage index, and the dispatch system damage index;

[0042] The damage level determination module is used to determine the comprehensive damage level corresponding to the comprehensive damage index of the power system facilities based on a pre-constructed damage level classification system.

[0043] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0044] This application provides a method and apparatus for assessing the degree of damage to power system facilities. After determining the damage indices for power generation facilities, transmission facilities, substation facilities, distribution facilities, and the dispatching system, a comprehensive damage index for the power system facilities can be determined based on these indices. Then, according to a pre-constructed damage level classification system, the comprehensive damage level corresponding to the comprehensive facility damage index can be determined. This method can comprehensively, accurately, and rapidly assess the degree of damage to power system facilities, providing a scientific basis for the recovery and reconstruction of the power system. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 A flowchart illustrating a method for assessing the degree of damage to power system facilities, provided as an embodiment of this application;

[0047] Figure 2 A schematic diagram illustrating the process of determining the comprehensive damage index of power system facilities, provided in an embodiment of this application;

[0048] Figure 3 A schematic diagram illustrating the process of determining the comprehensive damage level corresponding to the comprehensive damage index of power system facilities, provided in an embodiment of this application;

[0049] Figure 4 This is a schematic diagram of a power system facility damage assessment device provided in an embodiment of this application. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] In one embodiment, such as Figure 1 As shown, Figure 1 This application provides a flowchart illustrating a method for assessing the degree of damage to power system facilities, as illustrated in an embodiment of the present application. The method may include:

[0052] S110: Determine the damage index of power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching system of the power system.

[0053] In this step, when assessing the extent of damage to power system facilities, this application can first determine the damage indices for various key facilities in the power system, specifically covering the damage indices for power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching systems. The determination of these indices forms the basis for subsequent comprehensive assessments and reflects the damage status of power system facilities from different dimensions.

[0054] The power generation facility damage index in this application refers to a quantitative indicator of the degree to which generator units cannot operate normally or are completely damaged due to various factors (such as natural disasters, human-caused damage, equipment aging, etc.) in the area where the power system is located. This index is determined by comprehensively considering factors such as the total number of generator units, their damage status, and rated capacity. The transmission facility damage index refers to a quantitative indicator of the degree to which transmission lines cannot operate normally or are damaged due to various factors in the area where the power system is located. This index can be determined by statistically analyzing transmission lines of different voltage levels, combined with the total length of damaged lines, the total length of all lines, and the weight of each level of lines. The substation facility damage index is a quantitative indicator reflecting the degree of damage to substation facilities in the area where the power system is located. It can be calculated based on the substation level classification, combined with the total damaged capacity of substations, the total capacity of all substations, and the weight of each level of substations. The distribution facility damage index is used to quantify the damage situation of distribution substations in the area where the power system is located. It considers factors such as the number of distribution substations, the damage status of distribution transformers in each distribution substation, and the rated capacity of distribution transformers. The dispatch system damage index is an indicator that assesses the degree of communication loss between the power system dispatch center and power plants, substations, converter stations, and distribution main stations in the distribution area. It is calculated by counting the number of lost connections and the total number of lost connections.

[0055] S120: Determine the comprehensive damage index of power system facilities based on the damage index of power generation facilities, the damage index of transmission facilities, the damage index of substation facilities, the damage index of distribution facilities, and the damage index of dispatching system.

[0056] In this step, after determining the power system's power generation facility damage index, transmission facility damage index, substation facility damage index, distribution facility damage index, and dispatch system damage index through S110, this application can calculate the power system's comprehensive facility damage index based on these different dimensions of indices. In this way, the final comprehensive damage level can be determined based on the comprehensive facility damage index.

[0057] Understandably, since the damage indices for power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching systems all reflect the damage status of power system facilities from different dimensions, the weights of each index must be fully considered when calculating the comprehensive facility damage index to ensure the accuracy and scientific validity of the assessment results. Specifically, this application can reasonably allocate the weights of each index based on the importance and impact of various facilities in the power system, and then obtain the comprehensive facility damage index through a weighted summation method.

[0058] Of course, this application can also calculate the comprehensive facility damage index using other methods, such as using the analytic hierarchy process (AHP) or the entropy weight method to determine the weights of each index, and then calculating the comprehensive damage index based on the weights. Regardless of the method used, the core objective is to ensure that the comprehensive facility damage index accurately reflects the overall damage status of the power system.

[0059] S130: Based on a pre-constructed damage level classification system, determine the comprehensive damage level corresponding to the comprehensive damage index of the power system facilities.

[0060] In this step, after determining the comprehensive damage index of the power system facilities through S120, this application can also determine the comprehensive damage level corresponding to the comprehensive damage index of the facilities based on the pre-constructed damage level classification system.

[0061] The damage level classification system pre-constructed in this application is based on the severity of damage to power system facilities, clearly defining the corresponding level ranges for different damage levels. For example, damage levels can be divided into several levels, such as minor damage, moderate damage, severe damage, and catastrophic damage, with a corresponding comprehensive facility damage index range set for each level. Once the comprehensive facility damage index of the power system is determined, it can be quickly determined by comparing this index with the various level ranges in the damage level classification system. This tiered assessment method helps power departments to more intuitively understand the damage status of power system facilities, thus providing strong decision support for subsequent restoration and reconstruction work. Furthermore, the damage level classification system can be dynamically adjusted and optimized according to actual conditions to adapt to the power system facility damage assessment needs in different scenarios.

[0062] In the above embodiments, after determining the damage indices for power generation facilities, transmission facilities, substation facilities, distribution facilities, and the dispatching system, a comprehensive damage index for the power system's facilities can be determined based on these indices. Then, according to a pre-constructed damage level classification system, the comprehensive damage level corresponding to the comprehensive damage index is determined. This approach can comprehensively, accurately, and rapidly assess the degree of damage to the power system's facilities, providing a scientific basis for the recovery and reconstruction of the power system.

[0063] In one embodiment, determining the power generation facility damage index of the power system in S110 may include:

[0064] S1111: Determine the total number of generator sets in the area where the power system is located.

[0065] S1112: If the total number of generator sets is 0, then the power generation facility damage index of the power system is determined to be 0.

[0066] S1113: If the total number of generator sets is at least one, the power generation facility damage index of the power system shall be determined based on the first weight, damage status and rated capacity of at least one generator set.

[0067] In this embodiment, when determining the power generation facility damage index of a power system, the total number of generating units in the area where the power system is located must first be determined. If the total number of generating units in the area is zero, that is, there are no generating units, then the power generation facilities are obviously completely damaged, and the power generation facility damage index of the power system can be directly determined to be zero. If the total number of generating units is at least one, then the power generation facility damage index needs to be further determined based on the first weight, damage status, and rated capacity of these generating units.

[0068] Specifically, the first weight can be allocated based on the importance and impact of the generator set in the power system, the damage status reflects the actual damage situation of the generator set, such as whether it is operating normally, whether it is partially damaged or completely damaged, and the rated capacity represents the generator set's power generation capacity. By comprehensively considering these factors, the degree of damage to the power generation facilities of the power system can be assessed more accurately and comprehensively.

[0069] In one specific implementation, the power generation facility damage index of this application The calculation formula is as follows:

[0070]

[0071] In the formula: This represents the total number of generator sets in the statistical area. The first weight reflecting the importance of generator set i; Let be a 0-1 variable representing the damage state of generator set i. If generator set i is damaged, then... ,otherwise ; Let i be the rated capacity of generator set i.

[0072] It should be noted that the above first weight The score should reflect the overall importance of generator unit i, which is determined by experts in the fields of power generation and power system analysis. The scoring rules are as follows: 1 base score, with additional points determined based on the unit's characteristics; if the unit is a thermal or hydropower unit, it plays a more important role in primary frequency regulation and other processes compared to photovoltaic and wind turbine units with inverter interfaces, so add 1 point; if the unit generates reactive power to maintain grid voltage, add 1 point; if the unit has peak shaving capabilities, add 1 point; if the unit has black start capability, add 1 point.

[0073] Through this scoring mechanism, this application can scientifically and comprehensively consider the multifaceted role of generating units in the power system, thereby reasonably determining the primary weight. After determining the total number of generating units, the primary weight, the damage status, and the rated capacity, a relatively accurate power system generating facility damage index can be obtained by calculating according to the above formula. This index lays a solid foundation for further assessment of the overall damage level of power system facilities based on the damage status of generating facilities, helps to more accurately grasp the actual damage status of the power system after being affected by various factors, and provides key data support for subsequent targeted restoration and reconstruction measures. At the same time, this quantitative assessment method also facilitates comparative analysis of the damage status of power system generating facilities in different regions and at different times, thereby better summarizing lessons learned and improving the power system's ability to cope with various risks.

[0074] In one embodiment, determining the power system transmission facility damage index in S110 may include:

[0075] S1121: Statistically determine the voltage levels of multiple transmission line circuits in the area where the power system is located, and classify each transmission line circuit into different levels of lines based on the voltage levels.

[0076] S1122: Determine the second weight of lines of different grades, the total length of damaged lines, and the total length of all lines.

[0077] S1123: Determine the power transmission facility damage index of the power system based on the second weight of different levels of lines, the total length of damaged lines, and the total length of all lines.

[0078] In this embodiment, when determining the damage index of power transmission facilities, this application first statistically analyzes the voltage levels of multiple transmission line circuits in the area where the power system is located, and classifies each transmission line circuit into different levels based on the voltage level. Lines of different voltage levels play different roles and have varying importance in the power system. For example, this application can classify transmission lines into five levels according to voltage level: Class I lines refer to voltage levels of 500kV / ±400kV and above; Class II lines refer to voltage levels of 330kV / 220kV; Class III lines refer to voltage levels of 110kV / 66kV; Class IV lines refer to voltage levels of 35kV; and Class V lines refer to voltage levels of 20kV / 10kV.

[0079] Next, this application can determine the second weight of lines of different voltage levels, the total length of damaged lines, and the total length of all lines. The determination of the second weight requires comprehensive consideration of various factors, such as the criticality of different voltage levels in power transmission and their impact on power supply reliability. For example, since higher voltage levels typically transmit greater power, the second weight of this application... The possible values ​​are as follows: Class I lines Category II lines Category III lines Category IV lines Class V circuit The total length of damaged lines reflects the actual damage to transmission facilities caused by various factors, while the total length of all lines serves as a benchmark to measure the relative extent of the damage.

[0080] Finally, this application can determine the power system transmission facility damage index based on the second weight of different line grades, the total length of damaged lines, and the total length of all lines. Specifically, a weighted calculation method can be used to synthesize the damage status of different line grades according to their respective weights, thereby deriving an index that can comprehensively reflect the degree of damage to transmission facilities. Transmission Facility Damage Index The calculation formula is as follows:

[0081]

[0082] In the formula: variables This indicates the line class, with five categories corresponding to each other in order. ; Indicates the level as The weight of the line; For the statistical region, the level is The total length of the damaged lines; For the statistical region, the level is The total length of all lines.

[0083] The determination of this index helps to accurately assess the damage status of transmission facilities within the power system, providing an important reference for subsequent power restoration and reconstruction efforts. For example, when formulating transmission line repair plans, lines with severe damage can be prioritized for repair based on the magnitude of the transmission facility damage index, thereby improving the efficiency of power restoration. Furthermore, by comparing and analyzing the transmission facility damage indices in different regions and at different times, the patterns and characteristics of transmission facility damage can be summarized, providing empirical evidence for improving the disaster resistance and reliability of transmission facilities.

[0084] In one embodiment, determining the substation damage index of the power system in S110 may include:

[0085] S1131: Statistically determine the substation level of multiple substations in the area where the power system is located, and classify each substation into different levels of substations according to the substation level.

[0086] S1132: Determine the third weight of substations of different levels, the total capacity of substations damaged, and the total capacity of all substations.

[0087] S1133: Determine the substation facility damage index of the power system based on the third weight of substations of different levels, the total damaged capacity of substations, and the total capacity of all substations.

[0088] In this embodiment, when determining the substation damage index of a power system, this application first statistically analyzes the substation levels of multiple substations in the area where the power system is located, and classifies each substation into different levels based on its substation level. Different levels of substations have significantly different functions and importance within the power system. For example, because higher-level substations play a more crucial hub role in transmission projects, this application can classify substations into four levels according to factors such as capacity and voltage level.

[0089] Next, this application can determine the third weight of substations of different levels, the total damaged capacity of substations, and the total capacity of all substations. Third weight The determination of the substation weighting requires comprehensive consideration of various factors, such as the supporting role of different substation levels in regional power supply and their critical position in grid operation. For example, Class I substations, due to their core supporting role in regional power supply, can have a higher third weighting, such as 0.6; Class II substations have a lower weighting, set at 0.3; and Class III substations have a relatively lower weighting, set at 0.1. The total damaged capacity of substations reflects the actual scale of damage to substation facilities caused by various reasons, while the total capacity of all substations serves as a benchmark to reflect the relative proportion of the degree of damage.

[0090] Finally, this application can determine the power system's substation damage index based on the third weight of substations of different levels, the total damaged capacity of substations, and the total capacity of all substations. In practice, a weighted calculation method can be used to synthesize the damage status of substations of different levels according to their respective weights, thereby deriving an index that comprehensively reflects the degree of substation damage. Substation Damage Index The calculation formula is as follows:

[0091]

[0092] In the formula: variables This indicates the substation level; the four substation types listed above correspond to the following levels in order. ; Indicates the level as The third weight of the substation; For the statistical region, the level is The total capacity of the substations damaged; For the statistical region, the level is The total capacity of all substations.

[0093] Determining this index is crucial for accurately assessing the damage status of substation facilities within the power system, providing a key reference for subsequent power restoration and reconstruction efforts. For example, when scheduling the repair sequence of substations, priority can be given to repairing severely damaged substations based on the magnitude of the substation damage index, thereby accelerating the power restoration process.

[0094] In one embodiment, determining the power system distribution facility damage index in S110 may include:

[0095] S1141: Determine the number of distribution transformer substations in the area where the power system is located, the damage status of the transformers in each distribution transformer substation, and the rated capacity of the transformers.

[0096] S1142: Determine the power distribution facility damage index of the power system based on the number of distribution substations, the damage status of the transformers in each distribution substation, and the rated capacity of the transformers.

[0097] In this embodiment, when determining the damage index of power distribution facilities in a power system, this application first needs to clarify the number of distribution substations within the area where the power system is located. This is the basic data for assessing the damage to distribution facilities. Next, for each distribution substation, the damage status of its transformers needs to be understood in detail, such as whether the transformers are operating normally, whether they are partially or completely damaged, etc. This information can intuitively reflect the actual degree of damage to the distribution facilities. At the same time, the rated capacity of the transformers is also an important consideration, as it represents the power supply capacity of the distribution substation.

[0098] Having obtained the aforementioned key information, this application can determine the power system's distribution facility damage index based on this data. Specifically, a comprehensive assessment model can be constructed, incorporating factors such as the number of distribution substations, the damage status of transformers in each substation, and the rated capacity of the transformers. A calculation method can then be used to derive an index that comprehensively reflects the degree of damage to distribution facilities. This index calculation fully considers the importance and impact of different distribution substations, as well as their actual role in the power system, thereby ensuring the accuracy and reliability of the assessment results.

[0099] In one specific implementation, the power distribution facility damage index in this application The calculation formula is as follows:

[0100]

[0101] In the formula: To count the number of distribution radio stations within the region; To characterize whether the transformer in distribution area i is damaged, if the transformer is damaged, then ,otherwise ; The rated capacity of the distribution transformer in distribution area i.

[0102] Determining the distribution facility damage index is crucial for accurately assessing the damage status of distribution facilities within the power system. It not only helps relevant personnel understand the extent of damage in a timely manner, providing important reference for subsequent power restoration and reconstruction efforts, but also guides the rational allocation of repair resources, ensuring efficient repair work. For example, when developing a distribution facility repair plan, priority can be given to repairing severely damaged distribution areas based on the distribution facility damage index, in order to restore power supply as quickly as possible and minimize the impact of power outages on users.

[0103] In one embodiment, determining the dispatch system damage index of the power system in S110 may include:

[0104] S1151: The first total number of power plants, substations, converter stations, and distribution main stations within the area where the power system is located, and the second total number of power plants, substations, converter stations, and distribution main stations that are out of contact with the dispatch center.

[0105] S1152: Determine the dispatch system damage index of the power system based on the sum of the first quantity and the sum of the second quantity.

[0106] In this embodiment, when determining the power system dispatch system damage index, this application first calculates the total number of power plants, substations, converter stations, and distribution main stations within the power system area. This data reflects the total amount of infrastructure covered by the dispatch system. Simultaneously, it calculates the total number of power plants, substations, converter stations, and distribution main stations that are out of contact with the dispatch center. This data directly reflects the out-of-contact status of the dispatch system due to various factors, i.e., the actual damage situation.

[0107] Having obtained the two key data points mentioned above, this application can determine the power system dispatching system damage index based on the sum of the first and second quantities. Specifically, by calculating the ratio of the second sum to the first sum, an index that intuitively reflects the degree of damage to the dispatching system can be obtained. Dispatch System Damage Index The calculation formula is as follows:

[0108]

[0109] In the formula: This is the total number of power plants, substations, converter stations, and distribution main stations in the region that have lost contact with the dispatch center. This is the total number of power plants, substations, converter stations, and distribution main stations within the statistical area.

[0110] The determination of this index is of great significance for accurately assessing the damage to the dispatching system within the power system. As the "brain" of the power system, the dispatching system is responsible for coordinating and controlling the operation of various components; its degree of damage directly affects the stability and reliability of the entire power system. Through this index, relevant personnel can promptly understand the damage situation of the dispatching system, providing an important reference for subsequent power restoration and reconstruction efforts.

[0111] In one embodiment, such as Figure 2 As shown, Figure 2 This is a schematic diagram illustrating the process of determining the comprehensive damage index of power system facilities provided in this application embodiment; S120, determining the comprehensive damage index of power system facilities based on the damage index of power generation facilities, the damage index of transmission facilities, the damage index of substation facilities, the damage index of distribution facilities, and the damage index of the dispatching system, may include:

[0112] S121: Determine the weights of the first indicator corresponding to the damage index of power generation facilities, the second indicator corresponding to the damage index of transmission facilities, the third indicator corresponding to the damage index of substation facilities, the fourth indicator corresponding to the damage index of distribution facilities, and the fifth indicator corresponding to the damage index of dispatching system.

[0113] S122: Determine the comprehensive damage index of the power system facilities based on the damage index of power generation facilities and the corresponding weights of the first indicator, the damage index of transmission facilities and the corresponding weights of the second indicator, the damage index of substation facilities and the corresponding weights of the third indicator, the damage index of distribution facilities and the corresponding weights of the fourth indicator, and the damage index of the dispatch system and the corresponding weights of the fifth indicator.

[0114] In this embodiment, when determining the comprehensive damage index of power system facilities, this application first needs to clarify the index weights corresponding to each facility damage index. These index weights reflect the importance and influence of different facilities in the power system and are key parameters for calculating the comprehensive damage index. Specifically, the damage index of power generation facilities corresponds to the first index weight, the damage index of transmission facilities corresponds to the second index weight, the damage index of substation facilities corresponds to the third index weight, the damage index of distribution facilities corresponds to the fourth index weight, and the damage index of the dispatching system corresponds to the fifth index weight. The determination of these weights requires comprehensive consideration of various factors, such as the functional positioning of the facility in the power system and the degree of impact on power supply reliability, to ensure the rationality and scientific nature of the weights.

[0115] After obtaining the damage indices of each facility and their corresponding weights, this application can determine the comprehensive damage index of the power system facilities based on this data. Specifically, this application can use a weighted summation method to comprehensively calculate the damage indices of each facility according to their corresponding weights, thereby obtaining an index that can comprehensively reflect the overall damage level of the power system facilities. The formula for calculating this index can be expressed as:

[0116]

[0117] Where v∈V={gen, line, trans, dis, disp} are symbols for damaged components, which can represent power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching systems. The weights for each indicator are as follows: power generation facility damage index and its corresponding first indicator weight; transmission facility damage index and its corresponding second indicator weight; substation facility damage index and its corresponding third indicator weight; distribution facility damage index and its corresponding fourth indicator weight; and dispatch system damage index and its corresponding fifth indicator weight. This represents the corresponding damage index for various types of facilities.

[0118] Determining the comprehensive damage index of facilities is crucial for a thorough assessment of the damage to the power system during disasters or accidents. It not only helps relevant personnel understand the extent of damage to various power system facilities in a timely manner, providing important reference for subsequent power restoration and reconstruction efforts, but also guides the rational allocation and optimal configuration of repair resources, ensuring the efficient conduct of repair work.

[0119] In one embodiment, determining the weights of the first indicator corresponding to the power generation facility damage indicator, the second indicator corresponding to the transmission facility damage indicator, the third indicator corresponding to the substation facility damage indicator, the fourth indicator corresponding to the distribution facility damage indicator, and the fifth indicator corresponding to the dispatch system damage indicator in step S121 may include:

[0120] S1211: Obtain the relative importance of the damage indicators of power generation facilities, power transmission facilities, power substation facilities, power distribution facilities, and dispatching system when multiple experts make pairwise comparisons, and construct multiple sets of first intuition fuzzy judgment matrices based on the relative importance.

[0121] S1212: Perform consistency checks on each group of first intuition fuzzy judgment matrices, and correct the first intuition fuzzy judgment matrices that do not meet the consistency check, until all the first intuition fuzzy judgment matrices meet the consistency check, and obtain multiple groups of second intuition fuzzy judgment matrices.

[0122] S1213: After converting multiple sets of second intuitionistic fuzzy judgment matrices into a set of intuitionistic fuzzy weight matrices and determining the expert weights of each expert, the first indicator weight of the power generation facility damage index, the second indicator weight of the power transmission facility damage index, the third indicator weight of the substation facility damage index, the fourth indicator weight of the distribution facility damage index, and the fifth indicator weight of the dispatch system damage index are determined according to the intuitionistic fuzzy weight matrix and the expert weights of each expert.

[0123] In this embodiment, when determining the weights of various facility damage indicators, this application employs a method combining expert scoring and intuitionistic fuzzy judgment matrices. First, multiple sets of first-intuitionistic fuzzy judgment matrices are constructed by obtaining the relative importance of pairwise comparisons made by multiple experts regarding damage indicators for power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching systems. This method fully considers the expertise and experience of the experts, making the determination of weights more scientific and reasonable.

[0124] For example, in order to determine the weight of each indicator in the comprehensive evaluation, authoritative experts in the power industry or field can be hired to score each other in pairs based on the actual situation, and the intuitive fuzzy AHP method can be used to quantify the uncertainty of the expert scores and comprehensively and intuitively describe the expert team's comprehensive opinions.

[0125] Let m be the number of experts. Each expert compares the relative importance of the five facility damage indicators pairwise, resulting in the following m sets of first-intuition fuzzy judgment matrices:

[0126]

[0127] in: , This indicates that experts tend to favor i when comparing indicators pairwise. This indicates the degree to which experts favor j when comparing indicators pairwise. To quantify the uncertainty of expert judgment, the following is defined: , This represents the uncertainty when comparing experts. The diagonal elements in the matrix should be (0.5, 0.5).

[0128] Next, this application can perform consistency checks on each set of first intuition fuzzy judgment matrices. Consistency checks are an important step in ensuring the internal logical consistency of the judgment matrices, and they can avoid contradictions or unreasonable situations that may occur during the scoring process by experts. For first intuition fuzzy judgment matrices that do not meet the consistency check, this application will make corrections until all first intuition fuzzy judgment matrices meet the consistency check, thereby obtaining multiple sets of second intuition fuzzy judgment matrices.

[0129] Continuing with the above example, since the first intuitive fuzzy judgment matrix obtained from pairwise comparisons may contain logical contradictions or inconsistencies, such as the paradox of A being more important than B, B being more important than C, and C being more important than A, this application can employ a consistency check algorithm to construct a multiplicative consistent intuitive fuzzy judgment matrix to ensure the inherent consistency of the indicator importance assessment. Its specific form is calculated by the following steps:

[0130] For k>i+1 ,in:

[0131]

[0132]

[0133] For k=i+1, ;

[0134] For k=i, there are still ;

[0135] For k <i, .

[0136] Complete the multiplicative consistency intuition fuzzy judgment matrix After construction, for the first intuition fuzzy judgment matrix R and the consistency judgment matrix The distance between two matrices can be calculated using the following formula. :

[0137]

[0138] If R and If the distance between them satisfies the following formula, then R is considered to satisfy the consistency test:

[0139]

[0140] Where τ is the threshold of the consistency index, which is usually taken as 0.1, that is, if R and If the distance between the two is less than 0.1, the consistency of the judgment matrix is ​​considered acceptable.

[0141] If the judgment matrix R does not satisfy the consistency test, i.e. If so, it needs to be modified so that the modified judgment matrix meets the consistency test requirements. The new second intuition fuzzy judgment matrix. It can be constructed according to the following formula:

[0142]

[0143]

[0144] Where σ is the correction factor ( (), is a parameter that can be determined independently by experts; the smaller its value, and The closer they are, when σ=0, = The larger its value, the better. and The closer they are, when σ=1, = .

[0145] For the first intuitionistic fuzzy judgment matrix that does not meet the consistency test, this application can use the above reconstruction method to correct it, and then perform the consistency test to determine whether its consistency is acceptable. If it is not acceptable, the above reconstruction method can be used again to correct it, and this process can be repeated multiple times until a second intuitionistic fuzzy judgment matrix that meets the requirements is obtained. The final matrix is... That is, a second intuitionistic fuzzy judgment matrix with acceptable consistency.

[0146] Then, this application can transform multiple sets of second-intuitive fuzzy judgment matrices into a set of intuitionistic fuzzy weight matrices. This transformation process integrates the information from multiple judgment matrices using specific mathematical methods to obtain a weight matrix that reflects the relative importance of each facility damage index. Simultaneously, the expert weights for each expert are determined to account for differences in the authority and reliability of different experts in the scoring process.

[0147] Finally, based on the intuitionistic fuzzy weight matrix and the weights of various experts, this application determines the weights of the first indicator for power generation facility damage, the second indicator for transmission facility damage, the third indicator for substation facility damage, the fourth indicator for distribution facility damage, and the fifth indicator for dispatch system damage. The determination of these weights provides key parameters for the subsequent calculation of the comprehensive facility damage index of the power system, making the assessment results more accurate and reliable.

[0148] Following the example above, for the second intuitionistic fuzzy judgment matrix that meets the consistency requirement, this application can obtain the weights of each index using the normalization summation method according to the following formula:

[0149]

[0150] in, The intuitive fuzzy weights of index i (i=1, 2, 3, 4, 5) are the first index weight of the power generation facility damage index, the second index weight of the power transmission facility damage index, the third index weight of the substation facility damage index, the fourth index weight of the distribution facility damage index, and the fifth index weight of the dispatch system damage index.

[0151] After the above steps, m experts respectively obtained the second intuitionistic fuzzy discriminant matrix that satisfies consistency. It was transformed into a set of intuitive fuzzy weight matrices. :

[0152]

[0153] However, the above matrix is ​​still an intuitive fuzzy weight matrix, and the uncertainty problem still needs to be addressed. This application can transform the fuzzy numbers into single weights. Let the matrix elements be... The conversion function is as follows:

[0154]

[0155] in, The single weight of index i after transformation.

[0156] Furthermore, to integrate the weights calculated separately by each expert into a set of weights representing the overall opinion, this application can use intuitionistic fuzzy entropy to reflect the degree of uncertainty in expert judgment, thereby calculating the expert's weight. The intuitionistic fuzzy entropy of expert k's judgment matrix for index i is as follows:

[0157]

[0158] in, The smaller the value, the less uncertainty there is in the information of the intuitionistic fuzzy judgment matrix.

[0159] The weight of expert k is:

[0160]

[0161] in, Let be the mean of the intuitionistic fuzzy entropy of the judgment matrix of the k-th expert for all indicators. By calculating the intuitionistic fuzzy entropy of each expert and further obtaining the weight of each expert, we can more scientifically measure the contribution of different experts in the evaluation process.

[0162] The final integration yields the weight of index i. for:

[0163]

[0164] The above method ensures that the professional judgment and degree of uncertainty of each expert are fully considered when integrating multi-expert opinions, resulting in more scientific and reasonable weights for facility damage indicators. These weights not only reflect the importance of each facility in the power system but also take into account the subjectivity and uncertainty in the expert assessment process, providing a solid foundation for subsequent calculation of the comprehensive facility damage index. In practical applications, this method helps to more accurately assess the damage to the power system during disasters or accidents, providing strong support for power restoration and reconstruction efforts.

[0165] In one embodiment, such as Figure 3 As shown, Figure 3 This is a schematic diagram illustrating the process of determining the comprehensive damage level corresponding to the comprehensive damage index of the power system's facilities, as provided in the embodiments of this application. S130, determining the comprehensive damage level corresponding to the comprehensive damage index of the power system's facilities based on a pre-constructed damage level classification system, may include:

[0166] S131: Based on the pre-constructed damage level classification system, determine the level range corresponding to different damage levels.

[0167] S132: Compare the comprehensive facility damage index with different level ranges to determine the target level range corresponding to the comprehensive facility damage index.

[0168] S133: Determine the comprehensive damage level corresponding to the comprehensive damage index of the power system facilities based on the target level range.

[0169] In this embodiment, when constructing a damage level classification system, the damage characteristics of various facilities in the power system and their impact on overall operation must be comprehensively considered. By scientifically dividing the level ranges corresponding to different damage levels, the accuracy and practicality of the assessment results can be ensured. Specifically, based on historical data, expert experience, and actual operating conditions, different levels such as minor damage, moderate damage, severe damage, and complete damage can be set, and the range of the comprehensive facility damage index corresponding to each level can be clearly defined. After obtaining the comprehensive facility damage index of the power system, it can be compared with the preset level range to quickly determine its target level range. Finally, based on the target level range, the comprehensive facility damage level of the power system can be accurately determined, providing an important basis for subsequent emergency response, recovery and reconstruction, and decision support.

[0170] In one specific implementation, this application first determines membership functions for low, medium, and high damage levels for power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching systems based on expert opinions:

[0171]

[0172]

[0173]

[0174] Where v∈V={gen, line, trans, dis, disp} are symbols for damaged links, which can represent power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching systems; , , Let the membership functions represent the low, medium, and high levels of damage to the damaged link v. , , , , , , The parameters are membership functions, determined by expert scoring, indicating the experts' classification of the damage level; x represents a quantitative index of the facility damage degree, namely the damage index of power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching system mentioned above. The construction of these membership functions aims to transform the experts' subjective judgments on the degree of facility damage into quantifiable mathematical expressions, thereby providing a scientific basis for subsequent comprehensive assessments.

[0175] Next, this application can construct the corresponding indicators. -cut interval. Let C be the damage level, C∈{Low, Med, High}. Let the confidence level be... If it belongs to [0, 1], then the damage link v belongs to the -cut interval can be written as:

[0176]

[0177] This interval represents that under the damage degree level C, the membership function of the damage link v is not less than of the interval. For the above membership function, the -cut intervals of each damage degree level can be explicitly written as:

[0178]

[0179] According to the Zadeh extension principle, the -cut interval of the comprehensive damage index R of the facility under the damage degree level C ( ) can be expressed as the linear weighting of the -cut intervals of each damage link:

[0180]

[0181] where is the weight of the damage link v.

[0182] Solving satisfies:

[0183]

[0184] The low-middle demarcation point τ1 of the comprehensive damage index of the facility can be obtained. That is, τ1 is the intersection point of the -cut intervals of the comprehensive damage index R of the facility under the Low and Med levels:

[0185]

[0186] Similarly, the middle-high demarcation point τ2 of the comprehensive damage index of the facility is:

[0187]

[0188] Thus, the grade division of the comprehensive damage index R of the facility can be obtained. That is, when 0 ≤ R < τ1, it is considered that the damage degree level is low; when τ1 ≤ R ≤ τ2, it is considered that the damage degree level is medium; when τ2 < R ≤ 1, it is considered that the damage degree level is high.

[0189] This classification method has a clear mathematical basis and practical significance, objectively reflecting the degree of damage to power system facilities. By calculating the relationship between the comprehensive damage index R of the facilities and various boundary points, the damage level can be accurately determined, providing an important reference for subsequent emergency response and recovery work. In practical applications, this method helps to quickly assess the damage status of the power system, guiding relevant departments to formulate targeted recovery strategies, thereby effectively reducing the impact of disasters or accidents on the power system. Furthermore, this assessment device and method also possess high flexibility and scalability, allowing for customization based on the characteristics and needs of different power systems to meet diverse assessment requirements.

[0190] The following describes the power system facility damage assessment device provided in the embodiments of this application. The power system facility damage assessment device described below can be referred to in correspondence with the power system facility damage assessment method described above.

[0191] In one embodiment, such as Figure 4 As shown, Figure 4 This application provides a schematic diagram of a power system facility damage assessment device according to an embodiment of the present application. The present application also provides a power system facility damage assessment device, which may include various index determination modules 210, a comprehensive index determination module 220, and a damage level determination module 230, specifically including the following:

[0192] The various index determination module 210 is used to determine the damage index of power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching system of the power system.

[0193] The comprehensive index determination module 220 is used to determine the comprehensive facility damage index of the power system based on the power generation facility damage index, the transmission facility damage index, the substation facility damage index, the distribution facility damage index, and the dispatch system damage index.

[0194] The damage level determination module 230 is used to determine the comprehensive damage level corresponding to the comprehensive damage index of the power system facilities based on a pre-constructed damage level classification system.

[0195] In the above embodiments, after determining the damage indices for power generation facilities, transmission facilities, substation facilities, distribution facilities, and the dispatching system, a comprehensive damage index for the power system's facilities can be determined based on these indices. Then, according to a pre-constructed damage level classification system, the comprehensive damage level corresponding to the comprehensive damage index is determined. This approach can comprehensively, accurately, and rapidly assess the degree of damage to the power system's facilities, providing a scientific basis for the recovery and reconstruction of the power system.

[0196] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0197] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0198] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for assessing the degree of damage to power system facilities, characterized in that, The method includes: Determine the damage index of power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching system in the power system; Based on the power generation facility damage index, the transmission facility damage index, the substation facility damage index, the distribution facility damage index, and the dispatch system damage index, the comprehensive facility damage index of the power system is determined; Based on a pre-constructed damage level classification system, the comprehensive damage level corresponding to the comprehensive damage index of the power system facilities is determined.

2. The method for assessing the degree of damage to power system facilities according to claim 1, characterized in that, The determination of the power generation facility damage index of the power system includes: Determine the total number of generator units in the area where the power system is located; If the total number of generator sets is 0, then the power generation facility damage index of the power system is determined to be 0; If the total number of generator sets is at least one, the power generation facility damage index of the power system is determined based on the first weight, damage status, and rated capacity of the at least one generator set.

3. The method for assessing the degree of damage to power system facilities according to claim 1, characterized in that, The determination of the power system transmission facility damage index includes: The voltage levels of multiple transmission circuits in the area where the power system is located are statistically analyzed, and each transmission circuit is classified into different levels of lines based on the voltage levels. Determine the second weight of different levels of lines, the total length of damaged lines, and the total length of all lines; The power transmission facility damage index of the power system is determined based on the second weight of different levels of lines, the total length of damaged lines, and the total length of all lines.

4. The method for assessing the degree of damage to power system facilities according to claim 1, characterized in that, The determination of the substation damage index of the power system includes: The substations in the area where the power system is located are statistically classified into different substation levels based on their substation levels. Determine the third weight of substations of different levels, the total capacity of damaged substations, and the total capacity of all substations; The substation facility damage index of the power system is determined based on the third weight of substations of different levels, the total damaged capacity of substations, and the total capacity of all substations.

5. The method for assessing the degree of damage to power system facilities according to claim 1, characterized in that, The determination of the power system's distribution facility damage index includes: Determine the number of distribution transformer substations in the area where the power system is located, the damage status of the transformers in each distribution transformer substation, and the rated capacity of the transformers. The power system's power distribution facility damage index is determined based on the number of distribution substations, the damage status of the transformers in each distribution substation, and the rated capacity of the transformers.

6. The method for assessing the degree of damage to power system facilities according to claim 1, characterized in that, The determination of the power system dispatch system damage index includes: The total number of power plants, substations, converter stations, and distribution main stations within the power system area is counted, along with the total number of power plants, substations, converter stations, and distribution main stations that are out of contact with the dispatch center. The power system dispatch system damage index is determined based on the sum of the first quantity and the sum of the second quantity.

7. The method for assessing the degree of damage to power system facilities according to any one of claims 1-6, characterized in that, The determination of the comprehensive facility damage index of the power system based on the damage index of the power generation facilities, the damage index of the transmission facilities, the damage index of the substation facilities, the damage index of the distribution facilities, and the damage index of the dispatching system includes: The weights of the first indicator corresponding to the damage index of power generation facilities, the second indicator corresponding to the damage index of power transmission facilities, the third indicator corresponding to the damage index of substation facilities, the fourth indicator corresponding to the damage index of distribution facilities, and the fifth indicator corresponding to the damage index of dispatching system are determined. The comprehensive damage index of the power system facilities is determined based on the damage index of the power generation facilities and the corresponding first indicator weight, the damage index of the power transmission facilities and the corresponding second indicator weight, the damage index of the substation facilities and the corresponding third indicator weight, the damage index of the power distribution facilities and the corresponding fourth indicator weight, and the damage index of the dispatching system and the corresponding fifth indicator weight.

8. The method for assessing the degree of damage to power system facilities according to claim 7, characterized in that, The determination of the weights of the first indicator corresponding to the power generation facility damage index, the second indicator corresponding to the transmission facility damage index, the third indicator corresponding to the substation facility damage index, the fourth indicator corresponding to the distribution facility damage index, and the fifth indicator corresponding to the dispatch system damage index includes: The relative importance of the damage indicators of power generation facilities, power transmission facilities, power substation facilities, power distribution facilities, and dispatching system is obtained when multiple experts make pairwise comparisons. Based on the relative importance, multiple sets of first intuition fuzzy judgment matrices are constructed. Consistency checks are performed on each group of first intuition fuzzy judgment matrices, and those that do not meet the consistency check are corrected until all first intuition fuzzy judgment matrices meet the consistency check, thus obtaining multiple groups of second intuition fuzzy judgment matrices. Multiple sets of second intuitionistic fuzzy judgment matrices are transformed into a set of intuitionistic fuzzy weight matrices. After determining the expert weights of each expert, the first indicator weight of the power generation facility damage index, the second indicator weight of the power transmission facility damage index, the third indicator weight of the substation facility damage index, the fourth indicator weight of the distribution facility damage index, and the fifth indicator weight of the dispatch system damage index are determined based on the intuitionistic fuzzy weight matrix and the expert weights.

9. The method for assessing the degree of damage to power system facilities according to any one of claims 1-6, characterized in that, The determination of the comprehensive damage level corresponding to the comprehensive damage index of the power system facilities based on a pre-constructed damage level classification system includes: Based on the pre-constructed damage level classification system, determine the level range corresponding to different damage levels; The comprehensive damage index of the facilities is compared with different level ranges to determine the target level range corresponding to the comprehensive damage index of the facilities; The comprehensive damage level corresponding to the comprehensive damage index of the power system facilities is determined based on the target level range.

10. A device for assessing the degree of damage to power system facilities, characterized in that, include: Various index determination modules are used to determine the damage index of power generation facilities, transmission facilities, substation facilities, distribution facilities, and dispatching system in the power system; The comprehensive index determination module is used to determine the comprehensive facility damage index of the power system based on the power generation facility damage index, the transmission facility damage index, the substation facility damage index, the distribution facility damage index, and the dispatch system damage index; The damage level determination module is used to determine the comprehensive damage level corresponding to the comprehensive damage index of the power system facilities based on a pre-constructed damage level classification system.

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