Method and system for evaluating operation safety of power grid after new energy access

Abstract

The invention relates to the technical field of power grid safety assessment management, and discloses a power grid operation safety assessment method and system after new energy access, and the system comprises a new energy grid-connected detection item recognition module, a new energy grid-connected safety assessment module, and a new energy grid-connected safety assessment output module. According to the target new energy power generation object feature information and the grid-connected detection item type identification result information, performing intelligent matching of standard operation parameters corresponding to the target new energy power generation object access power grid safety detection item type in combination with an intelligent search algorithm and new energy grid-connected detection item standard operation parameters stored by big data; based on the actual and standard operation parameter analysis of the target new energy grid-connected detection items, the safety of each grid-connected detection item of the target new energy is intelligently and finely judged, and the grid-connected safety of the target new energy is comprehensively evaluated.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid security assessment management, and in particular to a method and system for assessing the security of power grid operation after the access of new energy. Background Art

[0002] New energy access refers to the use of energy storage technology, reactive power compensation technology, low voltage ride-through technology, automatic power generation control technology, etc. when new energy is connected to the grid, and the power generated by new energy is connected to the national grid through power electronic equipment. Since my country is in the early stage of new energy development, the relatively mature new energy sources at this stage are biomass power generation, wind power generation, photovoltaic power generation, and tidal power generation. Among them, wind power, photovoltaic power generation, and tidal power generation are the most affected by new energy access. The safety evaluation of new energy access to the grid refers to the safety evaluation of new energy power generation equipment in the power system to ensure that it can be safely and stably connected to the power system and operate. This is because the access of new energy power generation equipment will affect the stability and safety of the power system. If it is not evaluated and controlled, it may cause failures and accidents in the power system. Through the grid connection safety evaluation, it can be ensured that new energy power generation equipment can be safely and stably connected to the power system and operate, and at the same time, the stability and safety of the power system can be guaranteed. The existing safety evaluation of new energy access to the grid operation is mainly based on human experience comprehensive evaluation, which cannot achieve scientific matching of the grid connection detection project type based on the characteristic information of new energy power generation projects, reducing the accuracy and efficiency of the safety evaluation of new energy access to the grid operation, and reducing the safety and reliability of new energy access operations.

[0003] The Chinese invention patent application with publication number CN118396442A discloses a modal analysis method and system considering the access of new energy sources. By obtaining the parameters of the power grid system after the access of new energy sources, generating and correcting the Jacobian matrix based on the flow calculation, etc., the stability and security of the power grid can be more accurately evaluated. The nonlinear characteristics of the power grid after the access of new energy sources are also considered, and the new energy regulation strategy is added to adjust the corrected Jacobian matrix to more accurately reflect the actual operating status of the power grid. However, the above technical solutions cannot flexibly and intelligently analyze the security of new energy power generation access according to the characteristics of different new energy power generation objects, which reduces the safety of new energy power generation. Summary of the invention

[0004] In view of this, the present invention provides a method and system for assessing the operation safety of the power grid after the access of new energy, so as to solve the problem that the existing safety assessment of the operation of the power grid after the access of new energy is mainly based on comprehensive assessment of human experience, and it is impossible to scientifically match the type of grid-connected detection project based on the characteristic information of the new energy power generation project, which reduces the accuracy and efficiency of the safety assessment of the operation of the power grid after the access of new energy, and reduces the safety and reliability of the operation of the new energy access. The method and system for assessing the operation safety of the power grid after the access of new energy can realize the scientific collection of characteristic information of new energy power generation objects, intelligent search for the type of new energy grid-connected detection project, efficient and accurate acquisition of the actual operation parameters of the grid-connected detection project, scientific matching of the standardized operation parameters of the grid-connected detection project, efficient classification and analysis of the safety of the new energy grid-connected detection project, comprehensive assessment of the safety of the new energy grid-connected detection project, classification and color identification of the safety analysis results of the new energy grid-connected detection project, and intuitive and visual display of the safety assessment results of the new energy grid-connected detection project.

[0005] On one hand, the present invention provides a method for evaluating the safety of power grid operation after the access of new energy sources, the method comprising the following steps:

[0006] S1. Collecting characteristic text data of new energy power generation objects;

[0007] S2. Performing a safety detection project type identification process for the target new energy power generation object to access the power grid based on the new energy power generation object feature text data and the new energy grid connection detection project type data, and generating target new energy grid connection detection project type identification data;

[0008] S3. Based on the target renewable energy power generation object feature information and the grid connection detection project type identification result information, the actual operation parameter collection operation corresponding to the target renewable energy power generation object grid connection safety detection project type is performed to generate the target renewable energy grid connection detection project actual operation data;

[0009] S4. Search and process the standard operation parameters corresponding to the target new energy power generation object access grid safety detection project type according to the target new energy power generation object feature information, the grid connection detection project type identification result information and the new energy grid connection detection project standard operation data, and generate the target new energy grid connection detection project standard operation data;

[0010] S5. Based on the actual and standardized operating parameters of the target new energy grid-connected detection project, perform safety analysis and processing of the target new energy grid-connected detection project, generate safety analysis data of the target new energy grid-connected detection project, perform safety analysis and processing of the target new energy grid-connected detection project, and construct safety assessment data of the target new energy grid-connected detection project;

[0011] S6. Performing display rendering processing of the safety analysis result of the target new energy grid-connected detection project according to the safety analysis data of the target new energy grid-connected detection project, and generating display data of the safety analysis result of the target new energy grid-connected detection project;

[0012] S7. Construct feedback data on the safety assessment results of the power grid after the connection of new energy and execute the display and output operation of the safety assessment results of the power grid after the connection of new energy.

[0013] Preferably, the steps of collecting the characteristic text data of the new energy power generation object are as follows:

[0014] S11. Collect the power generation characteristic text information of specific new energy power generation objects online through the information entry dialog box of the power management platform, and generate new energy power generation object characteristic text data K; the new energy power generation object characteristic text data includes the power generation type, power generation installed capacity and power generation of the new energy power generation object; the power generation type includes wind power generation type, solar power generation type, geothermal power generation type and ocean power generation type.

[0015] Preferably, the operation steps of performing safety detection project type identification processing for target new energy power generation object access to the power grid based on the new energy power generation object characteristic text data and new energy grid connection detection project type data, and generating target new energy grid connection detection project type identification data are as follows:

[0016] S21. Establish a data set matrix of new energy grid connection detection project types A = (A 1 ,…,A m ,…,A β ), m=1,2,3,…,β; where A m represents the data set of new energy grid connection detection project types corresponding to the mth new energy power generation object characteristic information type, β represents the maximum number of new energy power generation object characteristic information types; A m =(a m,1 ,…,a m,n ,…,a m,χ ), n=1,2,3,…,χ; where a m,n Represents the new energy grid connection detection project type data set A mThe nth type of new energy grid connection detection project type data, χ represents the maximum number of new energy grid connection detection project types; the new energy power generation object characteristic information type represents the identity recognition characteristic information type for searching new energy grid connection detection projects formed by data combination of all power generation characteristic text information of new energy power generation objects, and the new energy grid connection detection project types include dynamic reactive power compensation device performance detection project types, power characteristic detection project types, grid adaptability detection project types, grid connection point power quality detection project types and fault ride-through detection project types for new energy grid connection; among them, the dynamic reactive power compensation device performance detection project types include dynamic reactive power compensation The steady-state control accuracy performance test, response time performance test, reactive power regulation performance test and voltage regulation performance test of the compensation device; the power characteristic detection project types include the active output characteristic test, active power control capability test and reactive power output characteristic test of the new energy access to the grid; the grid adaptability detection project types include the voltage deviation test, flicker test, harmonic test, harmonic test and frequency adaptability test of the new energy access to the grid; the grid connection point power quality detection project types include the harmonic voltage test, harmonic current test and three-phase imbalance test of the new energy access to the grid; the fault ride-through detection project type indicates the detection of the overall fault ride-through characteristics of the power station where the new energy access to the grid is detected;

[0017] S22, the new energy power generation object feature text data K and the new energy grid connection detection project type data set A in the new energy grid connection detection project type data set matrix A are combined. m Perform keyword matching of the new energy power generation object feature information type, and search for the new energy grid connection detection project type data set A corresponding to the new energy power generation object feature text data K m , and generate a target new energy grid-connected detection project type identification data set A′ through data identification; the specific operation steps for generating the target new energy grid-connected detection project type identification data set A′ are as follows:

[0018] S221, initialize honey source i, that is, the new energy grid connection detection project type data set A in the new energy grid connection detection project type data set matrix A m Set it as honey source i; set the number of honey sources β, the current number of iterations t and the maximum number of iterations T; the initial position of honey source i Z i , the formula for generating the initial position of the nectar source is as follows: Where Z i In the representation, the honey source i is randomly generated in the search space of the new energy grid connection detection project type data set matrix A according to the honey source initial position generation formula, where rand represents a random number within (0,1), σ and Respectively represent the upper bound and lower bound of the search space of the new energy grid connection detection project type data set matrix A;

[0019] S222, is the initial position Z of the nectar source i Assign hired bees. At the beginning of the search, hired bees search the matrix A of the new energy grid connection detection project type data set in the search space by all the new energy grid connection detection project type data sets A. m The initial position Z of the nectar source i Around, according to the formula Z' i =Z i +Θ×(Z i -Z τ ) Search and generate new honey source location Z′ i , that is, traverse and search for all the new energy grid connection detection project type data sets A in the search space of the new energy grid connection detection project type data set matrix A m ;in Indicates randomly selecting a nectar source that is not equal to i from among the β nectar sources, Z τ represents the position of the randomly selected honey source τ in the search space of the new energy grid connection detection project type data set matrix A, Θ represents a random number in the interval [-1,1];

[0020] S223, based on the new nectar source position Z′ i The fitness of the new energy grid connection detection project type data set A that matches the new energy power generation object feature text data K in the new energy grid connection detection project type data set matrix A search space is retained. m ;

[0021] S224, employed bees share nectar source information, and follower bees search for the new energy grid connection detection project type data set A that matches the new energy power generation object feature text data K in the new energy grid connection detection project type data set matrix A search space according to the probability value. m The honey source is searched, and the follower bee is based on the data set A of the new energy grid connection detection project type corresponding to the feature text data K of the new energy power generation object shared by the employed bee m Nectar source information, calculate the probability of the nectar source found by the employed bees being followed, the probability calculation formula is as follows: where Λ i Indicates the location of the new nectar source Z' i The probability of being followed by an employed bee, Φ i Indicates the location of the new nectar source Z' shared by the employed bees according to the follower bees i Adaptability;

[0022] S225. The follower bee searches in the same way as the employed bee and determines the retained nectar source i according to the greedy selection method, that is, searches for the new energy grid connection detection project type data set A that matches the new energy power generation object feature text data K in the search space of the new energy grid connection detection project type data set matrix A. m ;

[0023] S226, during the random search of the scout bee in the search space of the new energy grid-connected detection project type data set matrix A, if the honey source initial position Z i After t iterations, the search reaches the iteration threshold No better data set A for the new energy grid connection detection project type was found m Honey source, the new energy grid connection detection project type data set A m Initial location of nectar source Z i Will be abandoned, and the corresponding employed bees will become scout bees; the calculation formula for the scout bees to randomly generate new nectar source positions in the search space of the new energy grid connection detection project type data set matrix A is as follows: in It represents the position of the new honey source i in the search space of the new energy grid-connected detection project type data set matrix A after t+1 iterations, Indicates the position of the new honey source i generated after t iterations in the search space of the new energy grid-connected detection project type data set matrix A;

[0024] S227: When the maximum number of search iterations T is met, the new energy grid connection detection project type data set A matching the new energy power generation object feature text data K is output. m And generate the target new energy grid connection detection project type identification data set A'=(a' 1 ,…,a' n ,…,a' χ ), where a' n Represents the type identification data of the nth target new energy grid-connected detection project.

[0025] Preferably, based on the object feature information of the target new energy power generation and the identification result information of the grid connection detection project type, the actual operation parameter collection operation corresponding to the target new energy power generation object access grid safety detection project type is performed to generate the actual operation data of the target new energy grid connection detection project as follows:

[0026] S31, using the BERT language model algorithm based on the generated new energy power generation object feature text data K and the target new energy grid connection detection project type identification data a′ in the target new energy grid connection detection project type identification data set A′ nOn the power management platform, the target new energy power generation object characteristic keywords and the new energy power generation grid connection detection project type keywords are matched to search for the target new energy power generation grid connection detection project type identification data a′ 1 to a′ χ The actual operation parameters corresponding to the target new energy power generation object access to the grid security detection project type are constructed, and the actual operation data set B of the target new energy grid connection detection project is constructed. 1 ,…,b n ,…,b χ ), where b n Indicates the target new energy grid-connected detection project type identification data a′ n The corresponding actual operation data of the target new energy grid-connected detection project; the actual operation data of the target new energy grid-connected detection project represents the grid operation detection result data under actual working conditions corresponding to different types of target new energy grid access safety detection projects.

[0027] Preferably, the operation steps of searching for and processing the standard operation parameters corresponding to the target new energy power generation object access grid safety detection project type according to the target new energy power generation object feature information, the grid connection detection project type identification result information and the new energy grid connection detection project standard operation data to generate the target new energy grid connection detection project standard operation data are as follows:

[0028] S41. Establish a standardized operation data set for new energy grid connection detection projects C = (c 1 ,…,c o ,…,c δ ), o=1,2,3,…,δ; where c o represents the standard operation data of the new energy grid connection detection project corresponding to the oth new energy grid connection detection feature type, and the new energy grid connection detection feature type represents the target new energy grid connection detection project type identification data a′ in the target new energy grid connection detection project type identification data set A′. n The type of identity feature information formed by combining data for searching for specific standard operating parameters of new energy grid access detection projects;

[0029] S42, using a breadth-first search algorithm to search the new energy power generation object feature text data K and the target new energy grid connection detection project type identification data set A'. n The new energy grid connection detection project standard operation data set C is the new energy grid connection detection project standard operation data set C. oPerform new energy grid connection detection feature type matching, search for the new energy power generation object feature text data K and the target new energy grid connection detection project type identification data a′ in the target new energy grid connection detection project type identification data set A′ n The corresponding standard operation data of the new energy grid connection detection project c o , and construct the target new energy grid-connected detection project standard operation data set B'=(b' 1 ,…,b' n ,…,b' χ ), where b' n Indicates the actual operation data of the target new energy grid-connected detection project b n The corresponding target new energy grid-connected testing project standard operation data.

[0030] Preferably, the safety analysis and processing of the target new energy grid connection detection project is performed based on the actual and standardized operating parameters of the target new energy grid connection detection project, the safety analysis data of the target new energy grid connection detection project is generated, and the safety analysis and processing of the target new energy grid connection is performed, and the operation steps of constructing the safety assessment data of the target new energy grid connection are as follows:

[0031] S51, the actual operation data b of the target new energy grid-connected detection project in the actual operation data set B of the target new energy grid-connected detection project n The target new energy grid connection detection project standard operation data set B' is the target new energy grid connection detection project standard operation data set B'. n Perform character matching between the actual operation test results of the target new energy grid-connected test project and the standard operation test results, and generate the target new energy grid-connected test project safety analysis data set D = (d 1 ,…,d n ,…,d χ ), where d n Indicates the target new energy grid-connected detection project type identification data a' n The corresponding safety analysis data of the target new energy grid-connected testing project;

[0032] When b n With b' n The actual operation test result of the target new energy grid-connected test project matches the character of the standard operation test result successfully, indicating that the target new energy grid-connected test project type identification data a′ n If the corresponding new energy grid-connected detection project meets the safety specification requirements, the target new energy grid-connected detection project safety analysis data d is output. n For safety;

[0033] When b n With b' n The actual operation test result of the target new energy grid-connected test project and the standard operation test result characters do not match successfully, indicating that the target new energy grid-connected test project type identification data a′ n If the corresponding new energy grid-connected test project does not meet the safety specification requirements, the target new energy grid-connected test project safety analysis data d is output. n for insecurity;

[0034] S52, analyzing the target new energy grid connection detection project safety analysis data set D for the target new energy grid connection detection project safety analysis data set D. n Conduct keyword search for target new energy grid-connected test project safety analysis results, and generate target new energy grid-connected safety assessment data D based on the keyword search results for target new energy grid-connected test project safety analysis results jieguo ;

[0035] When the n All are safe, indicating that the target new energy grid-connected test items all meet the safety standards, and the target new energy grid-connected safety assessment data D is output. jieguo For safety;

[0036] When the n If there is unsafety in the target new energy grid connection test project, it means that the target new energy grid connection safety assessment data D is output. jieguo For unsafe.

[0037] Preferably, the safety analysis result display rendering processing of the target new energy grid-connected detection project is performed according to the safety analysis data of the target new energy grid-connected detection project, and the operation steps of generating the safety analysis result display data of the target new energy grid-connected detection project are as follows:

[0038] S61, when the target new energy grid-connected safety assessment data D jieguo When the construction is completed, the target new energy grid-connected detection project safety analysis data set D with the target new energy grid-connected detection project safety analysis result being unsafe is analyzed according to the target new energy grid-connected detection project safety analysis result keyword. n Carry out safety analysis data of adjacent target new energy grid connection test projects in order according to the type number of new energy grid connection test projects. n The background color of the target new energy grid connection detection project is rendered in different colors, and the target new energy grid connection detection project safety analysis result display data set E = (e 1 ,…,e n ,…,eχ ), where e n Indicates the target new energy grid-connected detection project type identification data a′ n The corresponding safety analysis results of the target new energy grid-connected detection project are displayed.

[0039] Preferably, the steps of constructing feedback data of the safety assessment result of the power grid after the new energy is connected and performing the display and output operation of the safety assessment result of the power grid after the new energy is connected are as follows:

[0040] S71, the target new energy grid-connected safety assessment data D jieguo The target new energy grid connection detection project safety analysis result display data set E is combined in a top-to-bottom sorting manner to construct the new energy grid security assessment result feedback data L after access, where

[0041] S72, outputting the feedback data L of the safety assessment result of the power grid after the new energy is connected through a display screen to perform a display output operation of the safety assessment result of the power grid after the new energy is connected.

[0042] The present invention also provides a system for evaluating the safety of power grid operation after the connection of new energy, which is used to implement the method for evaluating the safety of power grid operation after the connection of new energy. The system includes a new energy grid connection detection project identification module, a new energy grid connection safety evaluation module, and a new energy grid connection safety evaluation output module;

[0043] The new energy grid-connected detection project identification module includes a new energy power generation object feature information collection unit, a new energy grid-connected detection project type storage unit, and a target new energy grid-connected detection project type identification unit;

[0044] The new energy power generation object characteristic information collection unit is used to collect new energy power generation object characteristic text data through the power management platform; the new energy grid connection detection project type storage unit is used to store new energy grid connection detection project type data; the target new energy grid connection detection project type identification unit is used to perform safety detection project type identification processing of the target new energy power generation object accessing the power grid based on the new energy power generation object characteristic text data and the new energy grid connection detection project type data, and generate target new energy grid connection detection project type identification data;

[0045] The new energy grid connection safety assessment module includes a target new energy grid connection detection project actual operation parameter acquisition unit, a new energy grid connection detection project standard operation parameter storage unit, a target new energy grid connection detection project standard operation parameter search unit, a target new energy grid connection detection project safety analysis unit, and a new energy grid connection safety analysis unit;

[0046] The target new energy grid-connected detection project actual operation parameter collection unit is used to collect the actual operation parameters corresponding to the target new energy power generation object access to the grid safety detection project type based on the target new energy power generation object feature information, the grid-connected detection project type identification result information and the power management platform, and generate the target new energy grid-connected detection project actual operation data; the new energy grid-connected detection project standard operation parameter storage unit is used to store the new energy grid-connected detection project standard operation data; the target new energy grid-connected detection project standard operation parameter search unit is used to search and process the standard operation parameters corresponding to the target new energy power generation object access to the grid safety detection project type according to the target new energy power generation object feature information, the grid-connected detection project type identification result information and the new energy grid-connected detection project standard operation data, and generate the target new energy grid-connected detection project standard operation data; the target new energy grid-connected detection project safety analysis unit is used to perform the target new energy grid-connected detection project safety analysis based on the actual and standard operation parameters of the target new energy grid-connected detection project, and generate the target new energy grid-connected detection project safety analysis data; the new energy grid-connected safety analysis unit is used to perform the target new energy grid-connected safety analysis according to the target new energy grid-connected detection project safety analysis data, and construct the target new energy grid-connected safety assessment data;

[0047] The new energy grid connection safety assessment output module includes a target new energy grid connection detection project safety analysis result identification unit and a new energy grid connection safety assessment result display unit;

[0048] The target new energy grid-connected detection project safety analysis result identification unit is used to perform safety analysis result display rendering processing of the target new energy grid-connected detection project based on the target new energy grid-connected detection project safety analysis data, and generate target new energy grid-connected detection project safety analysis result display data; the new energy grid-connected safety assessment result display unit is used to construct the feedback data of the power grid safety assessment result after the new energy is connected, and combine with the display screen to perform the display output operation of the power grid safety assessment result after the new energy is connected.

[0049] Preferably, the new energy power generation object characteristic information collection unit collects the power generation characteristic text information of the specific new energy power generation object online through the information entry dialog box of the power management platform, and generates new energy power generation object characteristic text data.

[0050] The method and system for evaluating the safety of power grid operation after the access of new energy to the grid provided by the present invention have the following beneficial effects:

[0051] 1. Efficiently obtain the characteristic information of new energy power generation objects online through the power management platform, provide reliable data support for the scientific search of new energy grid-connected detection project types, standardize the storage of new energy grid-connected detection project type parameters, combine intelligent recognition algorithms with new energy power generation object characteristic information to intelligently match the target new energy power generation object with the safety detection project type for access to the power grid, and realize flexible and accurate matching of the grid-connected detection project type parameters required by the characteristics of new specific energy power generation objects based on artificial intelligence algorithms, thereby improving the accuracy and scientificity of the grid operation safety assessment results after new energy access.

[0052] 2. Through scientific collection of actual operating parameters corresponding to the types of safety detection projects for target new energy power generation objects connected to the power grid, the actual operating parameters of new energy grid-connected detection projects can be efficiently and accurately executed based on the characteristics of new energy power generation objects, providing real data support for the accurate assessment of the safety of power grid operation after new energy access; intelligent matching of standard operating parameters corresponding to the types of safety detection projects for target new energy power generation objects connected to the power grid is performed according to the characteristic information of the target new energy power generation objects and the identification result information of the grid-connected detection project types, combined with the intelligent search algorithm and the standard operating parameters of new energy grid-connected detection projects stored in big data, so as to achieve scientific and accurate search for standard operating parameters of new energy grid-connected detection projects based on the characteristics of new energy power generation objects; based on the analysis of the actual and standard operating parameters of the target new energy grid-connected detection projects, the safety of each grid-connected detection project of the target new energy is intelligently and finely judged, and the safety of the target new energy grid connection is comprehensively assessed, so as to improve the accuracy and rationality of the safety assessment results of the power grid operation after new energy access, and improve the intelligence and quality of new energy access operations.

[0053] 3. By rendering the safety analysis results of the target new energy grid-connected detection project based on data display identification, abnormal results in the safety assessment of the target new energy grid-connected detection project are highlighted, and the intuitiveness of the output of the safety assessment results of the power grid operation after the new energy is connected is improved; based on the data arrangement structure, the safety assessment results of the target new energy grid-connected detection project and the target new energy grid-connected safety assessment results are visually displayed and output in upper and lower layers; the readability and rationality of the output display of the safety assessment results of the power grid operation after the new energy is connected are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A schematic diagram of a module of a grid operation safety assessment system after new energy access provided by the present invention;

[0055] Figure 2 This is a flow chart of the method for evaluating the safety of power grid operation after the access of new energy provided by the present invention. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] The embodiments of the method and system for evaluating the safety of power grid operation after the access of new energy are as follows:

[0058] Embodiment 1:

[0059] See also Figure 1 - Figure 2 , a method for evaluating the safety of power grid operation after the access of new energy, the method comprises the following steps:

[0060] S1. Collecting characteristic text data of new energy power generation objects;

[0061] S2. Performing identification processing on the type of safety detection project for the target new energy power generation object to access the power grid based on the new energy power generation object feature text data and the new energy grid connection detection project type data, and generating target new energy grid connection detection project type identification data;

[0062] S3. Based on the target renewable energy power generation object feature information and the grid connection detection project type identification result information, the actual operation parameter collection operation corresponding to the target renewable energy power generation object grid connection safety detection project type is performed to generate the target renewable energy grid connection detection project actual operation data;

[0063] S4. Search and process the standard operation parameters corresponding to the target new energy power generation object access grid safety detection project type according to the target new energy power generation object feature information, the grid connection detection project type identification result information and the new energy grid connection detection project standard operation data, and generate the target new energy grid connection detection project standard operation data;

[0064] S5. Based on the actual and standardized operating parameters of the target new energy grid-connected detection project, perform safety analysis and processing of the target new energy grid-connected detection project, generate safety analysis data of the target new energy grid-connected detection project, perform safety analysis and processing of the target new energy grid-connected detection project, and construct safety assessment data of the target new energy grid-connected detection project;

[0065] S6. Perform safety analysis result display rendering processing on the target new energy grid-connected detection project based on the safety analysis data of the target new energy grid-connected detection project, and generate safety analysis result display data of the target new energy grid-connected detection project;

[0066] S7. Construct feedback data on the safety assessment results of the power grid after the connection of new energy and execute the display and output operation of the safety assessment results of the power grid after the connection of new energy.

[0067] For further information, see Figure 1 - Figure 2 ,The steps for collecting the characteristic text data of new energy power generation objects are as follows:

[0068] S11. Collect the power generation characteristic text information of specific new energy power generation objects online through the information entry dialog box of the power management platform, and generate new energy power generation object characteristic text data K; the new energy power generation object characteristic text data includes the power generation type, power generation installed capacity and power generation of the new energy power generation object; the power generation type includes wind power generation type, solar power generation type, geothermal power generation type and ocean power generation type.

[0069] According to the new energy power generation object characteristic text data and the new energy grid connection detection project type data, the target new energy power generation object is connected to the power grid for safety detection project type identification processing, and the operation steps for generating the target new energy grid connection detection project type identification data are as follows:

[0070] S21. Establish a data set matrix of new energy grid connection detection project types A = (A 1 ,…,A m ,…,A β ), m=1,2,3,…,β; where A m represents the data set of new energy grid connection detection project types corresponding to the mth new energy power generation object characteristic information type, β represents the maximum number of new energy power generation object characteristic information types; A m =(a m,1 ,…,a m,n ,…,a m,χ ), n=1,2,3,…,χ; where a m,n Represents the new energy grid-connected detection project type data set A mThe nth type of new energy grid connection detection project type data, χ represents the maximum number of new energy grid connection detection project types; the new energy power generation object characteristic information type represents the identity recognition characteristic information type for searching new energy grid connection detection projects formed by data combination of all power generation characteristic text information of new energy power generation objects, and the new energy grid connection detection project types include dynamic reactive power compensation device performance detection project types, power characteristic detection project types, grid adaptability detection project types, grid connection point power quality detection project types and fault ride-through detection project types for new energy grid connection; among them, the dynamic reactive power compensation device performance detection project types include dynamic reactive power compensation The steady-state control accuracy performance test, response time performance test, reactive power regulation performance test and voltage regulation performance test of the compensation device; the power characteristic detection project types include the active output characteristic test, active power control capability test and reactive power output characteristic test of the new energy access to the grid; the grid adaptability detection project types include the voltage deviation test, flicker test, harmonic test, harmonic test and frequency adaptability test of the new energy access to the grid; the grid connection point power quality detection project types include the harmonic voltage test, harmonic current test and three-phase imbalance test of the new energy access to the grid; the fault ride-through detection project type indicates the detection of the overall fault ride-through characteristics of the power station where the new energy access to the grid is detected;

[0071] S22, the new energy power generation object feature text data K and the new energy grid connection detection project type data set A in the new energy grid connection detection project type data set matrix A are combined m Perform keyword matching on the feature information type of the new energy power generation object, and search for the new energy grid connection detection project type data set A corresponding to the feature text data K of the new energy power generation object m , and generate the target new energy grid-connected detection project type identification data set A′ through data identification; the specific operation steps for generating the target new energy grid-connected detection project type identification data set A′ are as follows:

[0072] S221, initialize honey source i, that is, the new energy grid connection detection project type data set A in the new energy grid connection detection project type data set matrix A m Set it as honey source i; set the number of honey sources β, the current number of iterations t and the maximum number of iterations T; the initial position of honey source i Z i , the formula for generating the initial position of the nectar source is as follows: Where Z i In the representation, the honey source i is randomly generated in the search space of the new energy grid connection detection project type data set matrix A according to the honey source initial position generation formula, where rand represents a random number within (0,1), σ and They represent the upper and lower bounds of the search space of the new energy grid-connected detection project type data set matrix A respectively;

[0073] S222, is the initial position Z of the nectar source i Assign hired bees. At the beginning of the search, hired bees search the space of the new energy grid connection detection project type data set matrix A by all the new energy grid connection detection project type data set A. m The initial position Z of the nectar source i Around, according to the formula Z' i =Z i +Θ×(Z i -Z τ ) Search to generate new nectar source location Z' i , that is, traverse and search for all new energy grid connection detection project type data sets A in the search space of the new energy grid connection detection project type data set matrix A m ;in Indicates randomly selecting a nectar source that is not equal to i from among the β nectar sources, Z τ represents the position of the randomly selected honey source τ in the search space of the new energy grid connection detection project type data set matrix A, Θ represents a random number in the interval [-1,1];

[0074] S223, based on the new nectar source position Z′ i The fitness of the new energy grid connection detection project type data set A that matches the new energy power generation object feature text data K in the new energy grid connection detection project type data set matrix A search space is retained. m ;

[0075] S224, the employed bees share the nectar source information, and the follower bees search for the new energy grid connection detection project type data set A that matches the new energy power generation object feature text data K in the new energy grid connection detection project type data set matrix A search space according to the probability value m The honey source is searched, and the follower bee is based on the new energy grid connection detection project type data set A corresponding to the new energy power generation object feature text data K shared by the employed bee m Nectar source information, calculate the probability of the nectar source found by the employed bees being followed, the probability calculation formula is as follows: where Λ i Indicates the location of the new nectar source Z' i The probability of being followed by an employed bee, Φ i The location Z′ of the new nectar source shared by the employed bees is represented by the follower bees i Adaptability;

[0076] S225. The follower bee searches in the same way as the employed bee and determines the retained nectar source i according to the greedy selection method, that is, searches for the new energy grid connection detection project type data set A that matches the new energy power generation object feature text data K in the new energy grid connection detection project type data set matrix A search space. m ;

[0077] S226, during the random search of the scout bee in the search space of the new energy grid-connected detection project type data set matrix A, if the initial position of the honey source Z i After t iterations, the search reaches the iteration threshold No better data set A for new energy grid connection detection project type was found m Honey source, the new energy grid connection detection project type data set A m Initial location of nectar source Z i Will be abandoned, and the corresponding employed bees will become scout bees; the calculation formula for the scout bees to randomly generate new nectar source positions in the search space of the new energy grid connection detection project type data set matrix A is as follows: in It represents the position of the new honey source i in the search space of the new energy grid-connected detection project type data set matrix A after t+1 iterations. It represents the position of the new honey source i in the search space of the new energy grid connection detection project type data set matrix A after t iterations;

[0078] S227. When the maximum number of search iterations T is met, the new energy grid connection detection project type data set A matching the new energy power generation object feature text data K is output. m And generate the target new energy grid connection detection project type identification data set A'=(a' 1 ,…,a' n ,…,a' χ ), where a' n Represents the type identification data of the nth target new energy grid-connected detection project.

[0079] Through the new energy power generation object characteristic information collection unit, the power management platform is used to efficiently obtain the new energy power generation object characteristic information online, providing reliable data support for the scientific search of new energy grid-connected detection project types. The new energy grid-connected detection project type storage unit and the target new energy grid-connected detection project type identification unit cooperate with each other, and the standard storage of new energy grid-connected detection project type parameters is combined with the intelligent identification algorithm and the new energy power generation object characteristic information to perform intelligent matching of the target new energy power generation object's safety detection project type for accessing the power grid, so as to realize flexible and accurate matching of the new energy power generation object characteristics based on the artificial intelligence algorithm. The required grid-connected detection project type parameters are improved, and the accuracy and scientificity of the grid operation safety assessment results after the access of new energy are improved.

[0080] For further information, see Figure 1 - Figure 2 Based on the target renewable energy power generation object feature information and the grid connection detection project type identification result information, the actual operation parameter collection operation corresponding to the target renewable energy power generation object grid connection safety detection project type is performed to generate the target renewable energy grid connection detection project actual operation data operation steps are as follows:

[0081] S31, using the BERT language model algorithm based on the generated new energy power generation object feature text data K and the target new energy grid connection detection project type identification data a′ in the target new energy grid connection detection project type identification data set A′ n On the power management platform, the target new energy power generation object characteristic keywords and the new energy power generation grid connection detection project type keywords are matched to search for the target new energy power generation grid connection detection project type identification data a′ 1 to a′ χ The actual operation parameters corresponding to the target new energy power generation object access to the grid security detection project type are constructed, and the actual operation data set B of the target new energy grid connection detection project is constructed. 1 ,…,b n ,…,b χ ), where b n Indicates the target new energy grid-connected detection project type identification data a' n The corresponding actual operation data of the target new energy grid-connected detection project; the actual operation data of the target new energy grid-connected detection project represents the grid operation detection result data under actual working conditions corresponding to different types of target new energy grid access safety detection projects.

[0082] According to the target new energy power generation object feature information, the grid connection detection project type identification result information and the new energy grid connection detection project standard operation data, the target new energy power generation object access grid safety detection project type standard operation parameter search processing is performed, and the target new energy grid connection detection project standard operation data is generated as follows:

[0083] S41. Establish a standardized operation data set for new energy grid connection detection projects C = (c 1 ,…,c o ,…,c δ ), o=1,2,3,…,δ; where c o represents the standard operation data of the new energy grid connection detection project corresponding to the oth new energy grid connection detection feature type, and the new energy grid connection detection feature type represents the target new energy grid connection detection project type identification data a′ in the new energy power generation object feature text data K and the target new energy grid connection detection project type identification data set A′ nThe type of identity feature information formed by combining data for searching for specific standard operating parameters of new energy grid access detection projects;

[0084] S42, using a breadth-first search algorithm to search the new energy power generation object feature text data K and the target new energy grid connection detection project type identification data set A' of the target new energy grid connection detection project type identification data a' n In the new energy grid connection detection project standard operation data set C, the new energy grid connection detection project standard operation data c o Perform new energy grid connection detection feature type matching, search for new energy power generation object feature text data K and target new energy grid connection detection project type identification data a′ in the target new energy grid connection detection project type identification data set A′ n Corresponding new energy grid connection test project standard operation data c o , and construct the target new energy grid-connected detection project standard operation data set B'=(b' 1 ,…,b' n ,…,b' χ ), where b' n Indicates the actual operation data of the target new energy grid-connected detection project b n The corresponding target new energy grid-connected testing project standard operation data.

[0085] Based on the actual and standardized operating parameters of the target new energy grid-connected detection project, the safety analysis of the target new energy grid-connected detection project is performed, the safety analysis data of the target new energy grid-connected detection project is generated, and the safety analysis of the target new energy grid-connected detection project is performed. The operation steps for constructing the safety assessment data of the target new energy grid-connected detection project are as follows:

[0086] S51, the actual operation data b of the target new energy grid connection detection project in the actual operation data set B n The target new energy grid connection test project standard operation data set B' of the target new energy grid connection test project standard operation data b' n Perform character matching between the actual operation test results of the target new energy grid-connected test project and the standard operation test results, and generate the target new energy grid-connected test project safety analysis data set D = (d 1 ,…,d n ,…,d χ ), where d n Indicates the target new energy grid-connected detection project type identification data a' n Corresponding safety analysis data of target new energy grid-connected testing projects;

[0087] When bn With b' n The actual operation test results of the target new energy grid-connected test project and the standard operation test results are matched successfully, indicating that the target new energy grid-connected test project type identification data a′ n If the corresponding new energy grid-connected detection project meets the safety specification requirements, the target new energy grid-connected detection project safety analysis data d is output. n For safety;

[0088] When b n With b' n The actual operation test results of the target new energy grid-connected test project and the standard operation test results characters do not match successfully, indicating that the target new energy grid-connected test project type identification data a′ n If the corresponding new energy grid-connected test project does not meet the safety specification requirements, the target new energy grid-connected test project safety analysis data d is output. n for unsafe;

[0089] S52, target new energy grid connection detection project safety analysis data set D of target new energy grid connection detection project safety analysis data d n Conduct keyword search for target new energy grid-connected test project safety analysis results, and generate target new energy grid-connected safety assessment data D based on the keyword search results for target new energy grid-connected test project safety analysis results jieguo ;

[0090] When n All are safe, indicating that the target new energy grid-connected test items all meet the safety standards, and the target new energy grid-connected safety assessment data D is output. jieguo For safety;

[0091] When n If there is unsafety in the target new energy grid connection test project, it means that the target new energy grid connection safety assessment data D is output. jieguo For unsafe.

[0092] Through the target new energy grid-connected detection project actual operation parameter collection unit, the actual operation parameters corresponding to the target new energy power generation object access to the grid safety detection project type are scientifically collected, so as to realize efficient and accurate execution of the actual operation parameters of the new energy grid-connected detection project based on the characteristics of the new energy power generation object, and provide real data support for the accurate evaluation of the safety of grid operation after the new energy is connected; the target new energy grid-connected detection project standard operation parameter search unit, according to the target new energy power generation object characteristic information, the grid-connected detection project type identification result information combined with the intelligent search algorithm and the new energy grid-connected detection project standard operation parameters stored in the big data, intelligently match the standard operation parameters corresponding to the target new energy power generation object access to the grid safety detection project type, so as to realize scientific and accurate search for the standard operation parameters of the new energy grid-connected detection project based on the characteristics of the new energy power generation object; the target new energy grid-connected detection project safety analysis unit and the new energy grid-connected safety analysis unit cooperate with each other, based on the actual and standardized operation parameter analysis of the target new energy grid-connected detection project, intelligently and finely judge the safety of each target new energy grid-connected detection project and comprehensively evaluate the safety of the target new energy grid connection, so as to improve the accuracy and rationality of the grid operation safety evaluation results after the new energy is connected, and improve the intelligence and quality of the new energy access operation.

[0093] For further information, see Figure 1 - Figure 2 , based on the safety analysis data of the target new energy grid-connected detection project, the safety analysis results of the target new energy grid-connected detection project are displayed and rendered, and the operation steps for generating the safety analysis results display data of the target new energy grid-connected detection project are as follows:

[0094] S61. When the target new energy grid-connected safety assessment data D jieguo When the construction is completed, the target new energy grid-connected detection project safety analysis data set D with the target new energy grid-connected detection project safety analysis result being unsafe is selected according to the target new energy grid-connected detection project safety analysis result keyword. n Conduct safety analysis data of adjacent target new energy grid connection test projects in order according to the type number of the new energy grid connection test project. n The background color of the target new energy grid connection detection project is rendered in different colors, and the target new energy grid connection detection project safety analysis result display data set E = (e 1 ,…,e n ,…,e χ ), where e n Represents the target new energy grid-connected detection project type identification data a′ n The corresponding target new energy grid-connected testing project safety analysis results display data.

[0095] The steps for constructing feedback data of the safety assessment results of the power grid after the access of new energy and performing the output operation of displaying the safety assessment results of the power grid after the access of new energy are as follows:

[0096] S71. Connect the target new energy to the grid and evaluate its safety jieguo The target new energy grid connection detection project safety analysis result display data set E is combined in a top-down order to construct the feedback data L of the grid safety assessment result after the new energy connection.

[0097] S72. Output the feedback data L of the safety assessment result of the power grid after the new energy is connected to the grid through a display screen to perform the display output operation of the safety assessment result of the power grid after the new energy is connected to the grid.

[0098] Through the target new energy grid-connected detection project safety analysis result identification unit, the target new energy grid-connected detection project safety analysis result is displayed and rendered based on the data display identification, so as to realize the prominent identification of abnormal results in the safety assessment of the target new energy grid-connected detection project, and improve the intuitiveness of the output of the safety assessment results of the power grid operation after the new energy is connected; the new energy grid-connected safety assessment result display unit performs upper and lower layered visual display and output of the target new energy grid-connected detection project safety assessment results and the target new energy grid-connected safety assessment results based on the data arrangement structure; the readability and rationality of the output display of the safety assessment results of the power grid operation after the new energy is connected.

[0099] Embodiment 2:

[0100] See also Figure 1 - Figure 2 , a grid operation safety assessment system after new energy access is used to implement a grid operation safety assessment method after new energy access, the system includes a new energy grid connection detection project identification module, a new energy grid connection safety assessment module, and a new energy grid connection safety assessment output module;

[0101] The new energy grid-connected detection project identification module includes a new energy power generation object feature information collection unit, a new energy grid-connected detection project type storage unit, and a target new energy grid-connected detection project type identification unit;

[0102] The new energy power generation object characteristic information collection unit is used to collect new energy power generation object characteristic text data through the power management platform; the new energy grid connection detection project type storage unit is used to store new energy grid connection detection project type data; the target new energy grid connection detection project type identification unit is used to perform safety detection project type identification processing of the target new energy power generation object accessing the power grid based on the new energy power generation object characteristic text data and the new energy grid connection detection project type data, and generate target new energy grid connection detection project type identification data;

[0103] The new energy grid connection safety assessment module includes a target new energy grid connection detection project actual operation parameter acquisition unit, a new energy grid connection detection project standard operation parameter storage unit, a target new energy grid connection detection project standard operation parameter search unit, a target new energy grid connection detection project safety analysis unit, and a new energy grid connection safety analysis unit;

[0104] The target new energy grid-connected detection project actual operation parameter collection unit is used to collect the actual operation parameters corresponding to the target new energy power generation object access to the grid safety detection project type based on the target new energy power generation object feature information, the grid-connected detection project type identification result information and the power management platform, and generate the target new energy grid-connected detection project actual operation data; the new energy grid-connected detection project standard operation parameter storage unit is used to store the new energy grid-connected detection project standard operation data; the target new energy grid-connected detection project standard operation parameter search unit is used to search for the standard operation parameters corresponding to the target new energy power generation object access to the grid safety detection project type according to the target new energy power generation object feature information, the grid-connected detection project type identification result information and the new energy grid-connected detection project standard operation data, and generate the target new energy grid-connected detection project standard operation data; the target new energy grid-connected detection project safety analysis unit is used to perform the target new energy grid-connected detection project safety analysis based on the actual and standard operation parameters of the target new energy grid-connected detection project, and generate the target new energy grid-connected detection project safety analysis data; the new energy grid-connected safety analysis unit is used to perform the target new energy grid-connected safety analysis according to the target new energy grid-connected detection project safety analysis data, and construct the target new energy grid-connected safety assessment data;

[0105] The new energy grid connection safety assessment output module includes a target new energy grid connection detection project safety analysis result identification unit and a new energy grid connection safety assessment result display unit;

[0106] The target new energy grid-connected detection project safety analysis result identification unit is used to perform safety analysis result display rendering processing on the target new energy grid-connected detection project based on the target new energy grid-connected detection project safety analysis data, and generate target new energy grid-connected detection project safety analysis result display data; the new energy grid-connected safety assessment result display unit is used to construct the feedback data of the power grid safety assessment result after the new energy is connected, and combine with the display screen to perform the display output operation of the power grid safety assessment result after the new energy is connected.

[0107] Furthermore, the new energy power generation object characteristic information collection unit collects the power generation characteristic text information of the specific new energy power generation object online through the information entry dialog box of the power management platform, and generates new energy power generation object characteristic text data.

[0108] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for evaluating the safety of power grid operation after the access of new energy, characterized in that: The method comprises the following steps: S1. Collecting characteristic text data of new energy power generation objects; S2. Performing a safety detection project type identification process for the target new energy power generation object to access the power grid based on the new energy power generation object feature text data and the new energy grid connection detection project type data, and generating target new energy grid connection detection project type identification data; S3. Based on the target renewable energy power generation object feature information and the grid connection detection project type identification result information, the actual operation parameter collection operation corresponding to the target renewable energy power generation object grid connection safety detection project type is performed to generate the target renewable energy grid connection detection project actual operation data; S4. Search and process the standard operation parameters corresponding to the target new energy power generation object access grid safety detection project type according to the target new energy power generation object feature information, the grid connection detection project type identification result information and the new energy grid connection detection project standard operation data, and generate the target new energy grid connection detection project standard operation data; S5. Based on the actual and standardized operating parameters of the target new energy grid-connected detection project, perform safety analysis and processing of the target new energy grid-connected detection project, generate safety analysis data of the target new energy grid-connected detection project, perform safety analysis and processing of the target new energy grid-connected detection project, and construct safety assessment data of the target new energy grid-connected detection project; S6. Performing display rendering processing of the safety analysis result of the target new energy grid-connected detection project according to the safety analysis data of the target new energy grid-connected detection project, and generating display data of the safety analysis result of the target new energy grid-connected detection project; S7. Construct feedback data on the safety assessment results of the power grid after the connection of new energy and execute the display and output operation of the safety assessment results of the power grid after the connection of new energy.

2. The method for evaluating the safety of power grid operation after the access of new energy sources according to claim 1 is characterized in that: The S1 comprises the following steps: S11. Collect the power generation characteristic text information of the specific new energy power generation object online through the information entry dialog box of the power management platform, and generate the new energy power generation object characteristic text data K.

3. The method for evaluating the safety of power grid operation after the access of new energy sources according to claim 2 is characterized in that: The S2 comprises the following steps: S21. Establish a data set matrix of new energy grid-connected detection project types A = (A1,…,A m ,…,A β ), m=1,2,3,…,β; where A m represents the data set of new energy grid connection detection project types corresponding to the mth new energy power generation object characteristic information type, β represents the maximum number of new energy power generation object characteristic information types; A m =(a m,1 ,…,a m,n ,…,a m,χ ), n=1,2,3,…,χ; where a m,n Represents the new energy grid connection detection project type data set A m The nth type of new energy grid-connected detection project type data, χ represents the maximum number of new energy grid-connected detection project types; S22, combining the K with the A in the A m Perform keyword matching of the characteristic information type of the new energy power generation object to search for the A corresponding to the K m , and generate a target new energy grid-connected detection project type identification data set A′ through data identification; the specific operation steps for generating the target new energy grid-connected detection project type identification data set A′ are as follows: S221, initialize honey source i, that is, A in A m Set it as honey source i; set the number of honey sources β, the current number of iterations t and the maximum number of iterations T; the initial position of honey source i Z i ; S222, is the initial position Z of the nectar source i Assign hired bees. At the beginning of the search, hired bees are in the A search space composed of all the A m The initial position Z of the nectar source i Around; S223, based on the new nectar source position Z′ i The fitness of the A is determined by the greedy selection method to determine the retained honey source, that is, the A that matches the K in the A search space is retained. m ; S224, the employed bees share the nectar source information, and the follower bees search for the A that matches the K in the A search space according to the probability value. m The honey source is searched, and the follower bees search for the A corresponding to the K shared by the employed bees. m Nectar source information, calculate the probability of the nectar source found by the employed bees being followed; S225: The follower bees search in the same way as the employed bees and determine the nectar source i to be retained according to the greedy selection method, that is, search for the A that matches the K in the A search space. m ; S226, during the random search of the scout bee in the A search space, if the initial position of the nectar source is Z i After t iterations, the search reaches the iteration threshold No better A was found m Honey source, the A m Initial location of nectar source Z i will be abandoned, and the corresponding employed bees will become scout bees; the scout bees randomly generate new nectar source locations in the search space A; S227, when the maximum number of search iterations T is met, output the A that matches the K m And generate the target new energy grid-connected detection project type identification data set A'=(a'1,…,a' n ,…,a' χ ), where a' n Represents the type identification data of the nth target new energy grid-connected detection project.

4. The method for evaluating the safety of power grid operation after the access of new energy sources according to claim 3 is characterized in that: The S3 comprises the following steps: S31, using the BERT language model algorithm based on the generated K and a′ in A′ n On the power management platform, according to the matching of the new energy power generation object characteristic keywords and the new energy power generation grid connection detection project type keywords, the target new energy power generation grid connection detection project type identification data a′1 to a′ are searched out. χ The actual operating parameters corresponding to the target new energy power generation object access to the grid security detection project type are constructed, and the actual operating data set B of the target new energy grid connection detection project is constructed. n ,…,b χ ), where b n Indicates that a' n The corresponding actual operation data of the target new energy grid-connected detection project.

5. The method for evaluating the safety of power grid operation after the access of new energy sources according to claim 4 is characterized in that: The S4 comprises the following steps: S41. Establish the standardized operation data set C = (c1,…,c o ,…,c δ ), o=1,2,3,…,δ; where c o Indicates the standard operation data of the new energy grid connection detection project corresponding to the oth new energy grid connection detection feature type; S42, using a breadth-first search algorithm to search K and a′ in A′ n In the C o Perform new energy grid connection detection feature type matching to search for the K and the a′ in the A′ n The corresponding c o , and construct the target new energy grid-connected detection project standard operation data set B'=(b'1,…,b' n ,…,b' χ ), where b' n Indicates that b n The corresponding target new energy grid-connected testing project standard operation data.

6. The method for evaluating the safety of power grid operation after the access of new energy sources according to claim 5 is characterized in that: The S5 comprises the following steps: S51, the b in the B n and B' in b' n Perform character matching between the actual operation test results of the target new energy grid-connected test project and the standard operation test results, and generate the target new energy grid-connected test project safety analysis data set D = (d1, ..., d n ,…,d χ ), where d n Indicates that a' n The corresponding safety analysis data of the target new energy grid-connected testing project; When b n With b' n If the actual operation test results of the target new energy grid-connected test project match the characters of the standard operation test results successfully, the safety analysis data of the target new energy grid-connected test project d is output. n For safety; When b n With b' n If the actual operation test results of the target new energy grid-connected test project do not match the characters of the standard operation test results, the target new energy grid-connected test project safety analysis data d is output. n for insecurity; S52, for the d in the D n Conduct keyword search for target new energy grid-connected test project safety analysis results, and generate target new energy grid-connected safety assessment data D based on the keyword search results for target new energy grid-connected test project safety analysis results jieguo ; When the n If both are safe, the target new energy grid connection safety assessment data D is output. jieguo For safety; When the n If there is insecurity in the grid, the target new energy grid connection safety assessment data D is output. jieguo For unsafe.

7. The method for evaluating the safety of power grid operation after the access of new energy sources according to claim 6 is characterized in that: The S6 comprises the following steps: S61, when the D jieguo When the construction is completed, the target new energy grid connection detection project safety analysis result keyword is used to identify the target new energy grid connection detection project in D whose safety analysis result is unsafe. n Carry out the adjacent items in order according to the type number of the new energy grid connection test project. n The background color of the target new energy grid connection detection project is rendered in different colors, and the target new energy grid connection detection project safety analysis result display data set E = (e1,…,e n ,…,e χ ), where e n Indicates the a′ n The corresponding safety analysis results of the target new energy grid-connected testing project are displayed.

8. The method for evaluating the safety of power grid operation after the access of new energy sources according to claim 7 is characterized in that: The S7 comprises the following steps: S71, the D jieguo Combine the data with E in a top-to-bottom order to construct the feedback data L of the grid security assessment result after the new energy is connected; S72, outputting L through a display screen to display and output the results of the grid security assessment after the new energy is connected.

9. A system for evaluating the safety of power grid operation after the access of new energy, characterized in that: The system includes a new energy grid connection detection project identification module, a new energy grid connection safety assessment module, and a new energy grid connection safety assessment output module; The new energy grid-connected detection project identification module includes a new energy power generation object feature information collection unit, a new energy grid-connected detection project type storage unit, and a target new energy grid-connected detection project type identification unit; The new energy power generation object characteristic information collection unit is used to collect new energy power generation object characteristic text data through the power management platform; the new energy grid connection detection project type storage unit is used to store new energy grid connection detection project type data; the target new energy grid connection detection project type identification unit is used to perform safety detection project type identification processing of the target new energy power generation object accessing the power grid based on the new energy power generation object characteristic text data and the new energy grid connection detection project type data, and generate target new energy grid connection detection project type identification data; The new energy grid connection safety assessment module includes a target new energy grid connection detection project actual operation parameter acquisition unit, a new energy grid connection detection project standard operation parameter storage unit, a target new energy grid connection detection project standard operation parameter search unit, a target new energy grid connection detection project safety analysis unit, and a new energy grid connection safety analysis unit; The target new energy grid-connected detection project actual operation parameter collection unit is used to collect the actual operation parameters corresponding to the target new energy power generation object access to the grid safety detection project type based on the target new energy power generation object feature information, the grid-connected detection project type identification result information and the power management platform, and generate the target new energy grid-connected detection project actual operation data; The new energy grid-connected detection project standard operation parameter storage unit is used to store the new energy grid-connected detection project standard operation data; the target new energy grid-connected detection project standard operation parameter search unit is used to perform standard operation parameter search processing corresponding to the target new energy power generation object access to the power grid safety detection project type according to the target new energy power generation object feature information, the grid-connected detection project type identification result information and the new energy grid-connected detection project standard operation data, and generate the target new energy grid-connected detection project standard operation data; The target new energy grid-connected detection project safety analysis unit is used to perform safety analysis processing on the target new energy grid-connected detection project based on the actual and standardized operating parameters of the target new energy grid-connected detection project, and generate safety analysis data of the target new energy grid-connected detection project; The new energy grid connection safety analysis unit is used to perform target new energy grid connection safety analysis processing based on the target new energy grid connection detection project safety analysis data, and construct target new energy grid connection safety assessment data; The new energy grid connection safety assessment output module includes a target new energy grid connection detection project safety analysis result identification unit and a new energy grid connection safety assessment result display unit; The target new energy grid-connected detection project safety analysis result identification unit is used to perform safety analysis result display rendering processing of the target new energy grid-connected detection project according to the target new energy grid-connected detection project safety analysis data, and generate target new energy grid-connected detection project safety analysis result display data; The new energy grid connection safety assessment result display unit is used to construct feedback data of the grid safety assessment result after the new energy is connected and combine it with the display screen to perform the display output operation of the grid safety assessment result after the new energy is connected.

10. The grid operation safety assessment system after new energy access according to claim 9 is characterized in that: The new energy power generation object characteristic information collection unit collects the power generation characteristic text information of the specific new energy power generation object online through the information entry dialog box of the power management platform, and generates new energy power generation object characteristic text data.

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