Simulation method and device for working condition failure, electronic equipment and storage medium

Abstract

The application provides a working condition fault simulation method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring basic data of a new energy large base and a topological structure between power equipment, identifying and dividing the topological structure into a first topological structure and a second topological structure; performing aggregation equivalent calculation on the first topological structure and the second topological structure based on the basic data to obtain a plurality of equivalent area models, and constructing an electromagnetic transient equivalent model based on the basic data and the plurality of equivalent area models; constructing an electromagnetic transient detailed model based on the basic data and the topological structure, initializing the electromagnetic transient detailed model, triggering a fault by using a preset full working condition fault matrix, and obtaining detailed simulation data; initializing the electromagnetic transient equivalent model and triggering a fault by using the full working condition fault matrix, and obtaining equivalent simulation data.

Description

Technical Field

[0001] This application relates to the field of power system simulation technology, and in particular to a simulation method, apparatus, electronic device and storage medium for operating condition faults. Background Technology

[0002] Large-scale new energy bases are characterized by a large number of generating units, diverse power sources, and complex aggregation topologies. A single base may contain hundreds or even thousands of wind turbines, photovoltaic units, and energy storage units. If each unit is modeled in detail, it will lead to an explosive growth in the number of computation nodes in the simulation model, resulting in problems such as excessively large simulation step size, excessively long calculation time, and even failure to converge. Furthermore, the simulation results of large-scale new energy bases are large in volume, and simulating each operating condition separately will significantly increase time and labor costs, severely restricting the efficiency of simulation analysis. Summary of the Invention

[0003] In view of this, this application provides a simulation method, device, electronic device, and storage medium for operating condition faults, which simulates and models equipment in a large-scale new energy base and obtains all operating condition data in the large-scale new energy base in one row using a full-condition fault matrix. Then, the obtained operating condition data is compared with the operating condition data of the detailed electromagnetic transient model through a data processing algorithm, thereby improving the efficiency of simulating each operating condition and the processing speed of simulation data.

[0004] Firstly, embodiments of this application provide a simulation method for operational faults, used to simulate operational faults in a large-scale new energy base, wherein the large-scale new energy base includes multiple different types of power equipment, and the simulation method for operational faults includes: Acquire the basic data of the new energy base and the topology between the multiple power devices, identify the topology, and divide the topology into a first topology and a second topology; Based on the basic data, the first topology and the second topology are respectively subjected to aggregate equivalent calculations to obtain multiple equivalent region models. An electromagnetic transient equivalent model is constructed based on the basic data and the multiple equivalent region models. Based on the basic data and the topology, an electromagnetic transient detailed model is constructed. After initializing the electromagnetic transient detailed model, a fault is triggered using a preset full-condition fault matrix to obtain detailed simulation data of the electromagnetic transient detailed model. After initializing the electromagnetic transient equivalent model, the fault is triggered using the full-condition fault matrix to obtain equivalent simulation data.

[0005] Secondly, embodiments of this application provide a simulation device for operating condition faults, used to simulate operating condition faults in a large-scale new energy base, wherein the large-scale new energy base includes multiple different types of power equipment, and the simulation method for operating condition faults includes: The data acquisition and analysis module is used to acquire the basic data of the new energy base and the topology between the multiple power devices, identify the topology, and divide the topology into a first topology and a second topology. The model building and simulation module is used to perform aggregate equivalent calculations on the first topology and the second topology based on the basic data to obtain multiple equivalent region models, and to construct an electromagnetic transient equivalent model based on the basic data and the multiple equivalent region models. The model building and simulation module is also used to build a detailed electromagnetic transient model based on the basic data and the topology. After initializing the detailed electromagnetic transient model, a fault is triggered using a preset full-condition fault matrix to obtain detailed simulation data of the detailed electromagnetic transient model. The model building and simulation module is also used to initialize the electromagnetic transient equivalent model, trigger the fault using the full-condition fault matrix, and obtain equivalent simulation data. The simulation analysis and output module is used to analyze the detailed simulation data and equivalent simulation data, and generate a simulation accuracy verification report on the electromagnetic transient equivalent model.

[0006] Thirdly, embodiments of this application provide an electronic device including a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions implementing the steps of the method as described in the first aspect when executed by the processor.

[0007] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the first aspect.

[0008] Fifthly, embodiments of this application provide a chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0009] In a sixth aspect, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the method as described in the first aspect.

[0010] Thus, by using a processor integrated into the ADPSS platform to aggregate and represent the series and parallel connections of power equipment in a large-scale new energy base, an electromagnetic transient equivalent model is constructed. Based on the fundamental data and topology of the new energy base, a detailed electromagnetic transient model is then built. The processor then triggers both the electromagnetic transient equivalent model and the detailed electromagnetic transient model using a unified full-condition fault matrix, simultaneously acquiring equivalent and detailed simulation data, thereby verifying the accuracy of the electromagnetic transient equivalent model. In the above embodiment, by triggering faults in both the detailed and equivalent electromagnetic transient models using a full-condition fault matrix covering national standards, and comparing the equivalent and detailed simulation data, the accuracy of the equivalent simulation data is ensured. Simultaneously, automated data labeling, classification, storage, and analysis report generation enhance the traceability of the verification results. The electromagnetic transient equivalent model, after accuracy verification, can effectively reduce the speed and energy consumption of electromagnetic transient simulation calculations while maintaining simulation accuracy during subsequent simulations of the new energy base, thus providing reliable technical support for the accurate simulation and engineering application of the grid-connected characteristics of the new energy base.

[0011] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 A flowchart illustrating a simulation method for operational faults according to an embodiment of this application is shown. Figure 2 A schematic diagram of the full-condition fault matrix in a simulation method for operating condition faults according to an embodiment of this application is shown; Figure 3 (a) shows a schematic diagram of the first topology in a simulation method for operating condition faults according to an embodiment of this application; Figure 3 (b) shows a schematic diagram of the equivalent structure of the first topology in a simulation method for operating condition faults according to an embodiment of this application; Figure 4 (a) shows a schematic diagram of the second topology in a simulation method for operating condition faults according to an embodiment of this application; Figure 4(b) shows a schematic diagram of the equivalent structure of the second topology in a simulation method for operating condition faults according to an embodiment of this application; Figure 5 (a) shows a schematic diagram of one of the hybrid topologies in a simulation method for operational faults according to an embodiment of this application; Figure 5 (b) shows a schematic diagram of the equivalent structure of one of the hybrid topologies in a simulation method for operating condition faults according to an embodiment of this application; Figure 6 A structural block diagram of a simulation device for operational faults according to an embodiment of this application is shown; Figure 7 A structural block diagram of an electronic device according to an embodiment of this application is shown. Detailed Implementation

[0013] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0014] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0015] The simulation of working condition faults provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0016] This application provides a simulation method for operational faults. This method is used to simulate operational faults in a large-scale new energy base, which includes multiple new energy power stations, each containing various types of power equipment. In this application embodiment, the operational fault simulation method can be implemented in the ADPSS platform; therefore, the execution entity of this application can be a processor within the ADPSS platform. Figure 1 As shown, the method includes: Step 101: The processor acquires the basic data of the new energy base and the topology between multiple power devices. The processor identifies the topology and divides it into a first topology and a second topology.

[0017] Specifically, the basic data for the large-scale new energy power base includes: power data and impedance values ​​of each power device. The topology between multiple new energy power stations includes series and parallel connections; connections of the same type are defined as the same topology. The first topology can be series, and the second topology can be parallel. The processor acquires the topology between multiple new energy power stations and the power devices within them, and classifies the topological relationships between the power stations and the power devices into a first topology and a second topology based on the topology types.

[0018] Step 102: The processor performs aggregated equivalent calculations on the first and second topologies based on the basic data, obtaining multiple equivalent region models. The processor then constructs an electromagnetic transient equivalent model based on the basic data and the multiple equivalent region models.

[0019] The processor performs aggregated equivalent calculations on the first and second topologies respectively to generate corresponding equivalent region models. Based on the previously acquired basic data and the obtained equivalent region models, the processor constructs an electromagnetic transient equivalent model of the new energy base.

[0020] Step 103: The processor constructs a detailed electromagnetic transient model based on the basic data and topology. After initializing the detailed electromagnetic transient model, it triggers a fault using a preset full-condition fault matrix to obtain detailed simulation data of the detailed electromagnetic transient model.

[0021] The processor directly constructs a detailed electromagnetic transient model based on the topology of each power device in the new energy power station of the new energy base, as well as the power data and impedance values ​​of each power device, to serve as a reference for the equivalent electromagnetic transient model. Operators on the ADPSS platform can initialize the detailed electromagnetic transient model by setting the initial operating conditions. They can also pre-configure a full-condition fault matrix within the ADPSS platform. This matrix includes all types of faults required by national or industry standards such as GB / T19963.1-2021 "Technical Regulations for Wind Farm Access to Power Systems Part 1: Onshore Wind Power" and GB / T 19964-2024 "Technical Regulations for Photovoltaic Power Station Access to Power Systems." These faults mainly include high-voltage and low-voltage transmission conditions such as large and small power outputs, single-phase grounding faults, two-phase short-circuit faults, three-phase short-circuit faults, and voltage dips of 0%, 20%, 35%, 50%, 75%, and 90%, as well as voltage rises of 120%, 125%, and 130%. Users can also customize parameters such as fault location, fault start time, fault duration, and voltage dip depth within the full-condition fault matrix. By running the full-condition fault matrix once in the detailed electromagnetic transient model, the data for all conditions can be output, which is the detailed simulation data.

[0022] A schematic diagram of the full-condition fault matrix is ​​shown below. Figure 2 As shown, specifically, the processor constructs a 3×2 order fault condition matrix based on three dimensions (pre-configured fault amplitude, fault duration, and fault interval time) and two dimensions (two-phase fault and three-phase fault). It then constructs multiple individual fault units based on this matrix. Finally, the processor generates a full-condition fault matrix based on these individual fault units and a pre-configured time axis. Operators on the ADPSS platform construct individual fault units in the processor by inputting the fault start time, fault interval time, rated electrical quantity, and fault step amplitude. For example, the specific process of constructing an individual fault unit is as follows: The processor outputs a reference per-unit value corresponding to the rated electrical quantity through a constant signal module. The processor determines the first fault initiation time t1 as the first step trigger time and sets the step amplitude as... The processor configures the step amplitude and the first step trigger time together into the first step signal module. In the first step signal module, the output amplitude remains constant after the signal steps. The processor determines the acquired second fault end time t2 as the second step trigger time and determines the step amplitude as... The processor configures the step amplitude and the first step trigger time together into the second step signal module. In the second step signal module, the output amplitude remains constant after the signal steps. The output data from the constant signal module, the first step signal module, and the second step signal module are superimposed using an adder to obtain a complete fault waveform. In the obtained fault waveform, when t < t1, the output data is... This output data represents the simulated power equipment being in a normal state at this time; when t1≤t<t2, the output data is... This output data represents the steady state of the simulated power equipment after the fault drop; when t≥t2, the output data is... This output data represents the steady state of the simulated power equipment after fault recovery. Specifically, the fault duration t0 can be determined based on t1 and t2, where t0 = t2 - t1. The fault duration can be adjusted by adjusting the first and second step trigger times.

[0023] The processor connects multiple pre-configured individual fault units in series according to a pre-configured time axis and pre-configured fault intervals to obtain a full fault matrix model. The pre-configured time axis serves as the simulation time axis. Since each individual fault unit corresponds to only one set of fault parameters, the output of each individual fault unit is sequentially connected to the disturbance input port of the system under test through timing switching logic. All individual fault units are non-overlapping in the time dimension and are triggered sequentially, ultimately forming a full-condition fault matrix covering all preset fault conditions.

[0024] Step 104: After the processor initializes the electromagnetic transient equivalent model, it triggers the fault using the full-condition fault matrix to obtain equivalent simulation data.

[0025] The processor can also initialize the electromagnetic transient equivalent model based on the initial operating conditions. Once the electromagnetic transient equivalent model has been initialized and is running stably, the full-condition fault matrix is ​​invoked to trigger various faults in the electromagnetic transient equivalent model. Similarly, after the electromagnetic transient equivalent model runs once based on the full-condition fault matrix, it can also output data under all operating conditions at once, i.e., equivalent simulation data, saving simulation time and improving simulation efficiency.

[0026] Thus, by using the processor mounted on the ADPSS platform to determine the equivalent regions of the control data types output by the controllers of power equipment in the energy stations of the new energy base and the control data types output by the controllers of the new energy power stations, the equivalent regions are aggregated and equivalently represented for the series and parallel structures, ultimately constructing an electromagnetic transient equivalent model. Then, based on the basic data and topology of the new energy base, a detailed electromagnetic transient model of the new energy base is constructed. Subsequently, the processor uses a unified full-condition fault matrix to trigger both the electromagnetic transient equivalent model and the detailed electromagnetic transient model, simultaneously acquiring equivalent simulation data and detailed simulation data. This provides crucial data for subsequent accuracy verification of the electromagnetic transient equivalent model. In the above embodiment, by triggering faults in both the detailed electromagnetic transient model and the electromagnetic transient equivalent model using a full-condition fault matrix covering national standards, the electromagnetic transient equivalent model, after accuracy verification, can effectively reduce the speed and energy consumption of electromagnetic transient simulation calculations while ensuring simulation accuracy during subsequent simulations of the new energy base. This provides reliable technical support for the accurate simulation and engineering application of the grid connection characteristics of the new energy base.

[0027] In some embodiments, step 103 can be implemented by steps 1031 to 1033: Step 1031: The processor constructs a detailed electromagnetic transient model based on the basic data and topology.

[0028] The processor constructs a detailed electromagnetic transient model based on the acquired operational data and equipment parameters of relevant equipment in the large-scale new energy base, as well as the topology containing the relevant equipment structures. Specifically, the processor models each wind power, photovoltaic, and energy storage unit in the large-scale new energy base according to the actual engineering topology, equipment parameters, unit type and quantity, thereby completely reproducing the main circuit topology, core control strategy, and full details of the lines and station equipment. This results in the construction of a detailed electromagnetic transient model consistent with the actual engineering, serving as a benchmark comparison model for verifying the steady-state and transient accuracy of the equivalent model. For example, the basic data acquired by the processor may include grid connection point data, unit-side data, inverter-side data, and data from the aggregation network. Grid connection point data includes: bus three-phase voltage, three-phase current, and total active / reactive power; unit-side data includes: three-phase active / reactive output of each equivalent unit and three-phase voltage at the generator terminals; inverter-side data includes: inverter outlet three-phase current and DC bus voltage; and aggregation network data includes: power flow at the beginning and end of each aggregation line, three-phase voltage and current, etc. The data acquisition frequency can be kept consistent with the step size of the electromagnetic transient simulation, for example, set to... To ensure timing synchronization, data acquired at the same time are stamped with the same timestamps as the detailed electromagnetic transient model and the equivalent electromagnetic transient model, ensuring that the phase and time scale of the transient waveforms generated in the simulation are completely consistent.

[0029] Step 1032: The processor configures the initial operating conditions for the electromagnetic transient model and runs the detailed electromagnetic transient model. The initial operating conditions are determined based on the basic data.

[0030] Operators of the ADPSS platform can use common operating conditions of large-scale new energy bases as initial operating conditions and configure relevant parameters into the electromagnetic transient detailed model so that the electromagnetic transient detailed model can simulate common operating states in large-scale new energy bases.

[0031] Step 1033: The processor keeps the operating parameters of the electromagnetic transient detailed model stable, inputs the full-condition fault matrix into the electromagnetic transient detailed model, and records the detailed simulation data about the fault output by the electromagnetic transient detailed model.

[0032] Once the operating parameters of the detailed electromagnetic transient model stabilize, the processor can input the pre-configured full-condition fault matrix into the detailed electromagnetic transient model. This allows the detailed electromagnetic transient model to simulate potential faults in various power equipment and output detailed simulation data. Since the detailed electromagnetic transient model is a complete model of the power equipment in the large-scale new energy base without equivalence or replacement, the output detailed simulation data is essentially consistent with the actual data when faults occur during the operation of the large-scale new energy base. Therefore, the simulation data of the equivalent electromagnetic transient model will be evaluated using the detailed simulation data as a benchmark to determine whether the accuracy of the equivalent electromagnetic transient model meets the standards.

[0033] In the simulation of detailed electromagnetic transient faults, the processor uses the voltage of phase A at the grid connection point as the reference feature and employs a threshold detection algorithm with sliding window filtering to locate the fault moment. Specifically, when the voltage amplitude collected by the processor drops below 90% of the nominal voltage for more than three consecutive sampling points, the fault start time t1 is determined; when the voltage amplitude collected by the processor recovers to above 90% of the nominal voltage for more than three consecutive sampling points, the fault end time t2 is determined. This method achieves a positioning accuracy of one sampling step, thereby improving the fault location accuracy.

[0034] In the above embodiments, the processor constructs a detailed electromagnetic transient model using basic data synchronously collected from multiple measurement points, configures the initial operating conditions of the detailed electromagnetic transient equivalent model, and triggers the full-condition fault matrix covering national standard requirements by strictly controlling the timing of the operation of the detailed electromagnetic transient equivalent model. This enables the output of detailed simulation data that closely approximates the real situation. The obtained detailed simulation data not only provides a reliable and synchronous benchmark for the accuracy verification of the equivalent model, but also ensures complete consistency of transient waveform phase and timing through comprehensive acquisition of multiple types of data and alignment with unified timestamps. This improves the credibility of the verification benchmark and the standardization and repeatability of the fault simulation process.

[0035] In some embodiments, step 104 can be implemented by steps 1041 to 1042: Step 1041: The processor configures the initial operating conditions for the electromagnetic transient equivalent model and controls the operation of the electromagnetic transient equivalent model.

[0036] Similarly, the processor can call the initial operating conditions configured by the operator of the ADPSS platform for the detailed electromagnetic transient model, and input the relevant parameters in the initial operating conditions into the electromagnetic transient equivalent model to initialize the electromagnetic transient equivalent model.

[0037] Step 1042: After the operating parameters of the electromagnetic transient equivalent model stabilize, the processor inputs the full-condition fault matrix into the electromagnetic transient equivalent model and records the equivalent simulation data about the fault output by the electromagnetic transient equivalent model.

[0038] When the operating parameters of the electromagnetic transient equivalent model remain stable, the processor can call the pre-configured full-condition fault matrix in the processor and input the full-condition fault matrix into the electromagnetic transient equivalent model, so that the electromagnetic transient equivalent model can simulate the faults that may occur in the power equipment in the new energy base, and obtain and output equivalent simulation data.

[0039] After the processor stabilizes, it can invoke and strictly control the fault initiation time and duration based on the full-condition fault matrix. The fault duration is determined according to national standards. Single-condition simulation includes three stages: pre-fault steady state, fault-prone quasi-steady state, and post-fault recovery. During the simulation, the processor controls the fault initiation time and duration to match the condition matrix parameters, ensuring that the triggering time error is controlled within one simulation step and the duration accuracy error is controlled within [specific parameters]. Within this range, so that the equivalent simulation data is closer to the actual operating data.

[0040] In the above embodiments, the processor directly configures the same initial operating parameters as the detailed electromagnetic transient model into the equivalent electromagnetic transient model, and uses the same full-condition fault matrix for triggering. After the equivalent electromagnetic transient model stabilizes, it collects equivalent simulation data with the same timing control logic, thereby reducing data deviations caused by differences in operating conditions or inconsistent triggering. This provides a data foundation for subsequent analysis of the equivalent accuracy of the equivalent electromagnetic transient model, simplifies the initialization process of the equivalent electromagnetic transient model, and improves the reliability of simulation verification.

[0041] In some embodiments, a large-scale new energy base includes multiple new energy power stations, each power station includes multiple power equipment, and the basic data includes control data of the power equipment. Step 102 can be implemented through steps 1021 to 1022: Step 1021: The processor determines the detailed structure diagram of the new energy base based on the basic data. Power equipment with the same type of control data output in the same new energy power station is identified as a first-level equivalent region. The first-level equivalent region includes multiple first-level sub-equivalent regions. After equivalence of the first-level sub-equivalent regions, the first-level equivalent structure diagram is determined.

[0042] The basic data includes control data. The processor can identify the type of control data output by the controllers of power equipment in the new energy base, and then construct a detailed structure diagram of the new energy base based on the type of control data output by each power equipment. The controller then analyzes the detailed structure diagram and hierarchically combines the equivalent models of power equipment that require equivalent calculations. Equipment that does not require equivalent calculations includes bus substations, substations, reactive power compensation devices, power transmission lines, and external main grid structures. The processor considers power equipment with the same type of output control data as equivalent, thus determining multiple primary equivalent regions. Each primary equivalent region can include one or more primary sub-equivalent regions. Primary sub-equivalent regions can be formed by connecting power equipment with the same type of output control data through a first topology, or by connecting power equipment with the same type of output control data through a second topology. Primary sub-equivalent regions can also be connected through either the first or second topology to ultimately form primary equivalent regions. After equivalencing the first and second topologies, the processor obtains multiple primary equivalent region models.

[0043] Step 1022: Based on the first-level equivalent structure diagram, the processor determines the new energy power stations with the same type of control data output from the new energy base as the second-level equivalent region. The second-level equivalent region includes multiple second-level sub-equivalent regions. After equivalence of the second-level sub-equivalent regions, the electromagnetic transient equivalent model is obtained.

[0044] Similarly, the processor can identify the type of control data output by the controllers of each new energy power station in the large-scale new energy base. Based on the data type of the control data output by each new energy power station, it constructs a secondary equivalent structure diagram of the large-scale new energy base. The controller then analyzes the secondary equivalent structure diagram and hierarchically combines the equivalent models of the new energy power stations requiring equivalent calculations. The processor considers new energy power stations with the same output control data type as equivalent, thus determining multiple secondary equivalent regions. Each secondary equivalent region can include one or more secondary sub-equivalent regions. These sub-equivalent regions can be formed by connecting new energy power stations with the same output control data type through a first topology, or by connecting them through a second topology. Secondary sub-equivalent regions can also be connected through either the first or second topology, ultimately forming secondary equivalent regions. After equivalencing the secondary equivalent regions, the processor finally constructs an electromagnetic transient equivalent model to ensure the simulation accuracy of the electromagnetic transient equivalent model.

[0045] In the above embodiments, the processor identifies the control types output by power equipment and new energy power plants, and then automatically identifies and divides equivalent regions and equivalent sub-regions. The processor determines multiple equivalent region models based on the first topology and the second topology, and then hierarchically combines the multiple first-level region models obtained after equivalence with core equipment that does not require equivalence, such as the bus substation, booster substation, reactive power compensation, transmission lines and external main grid. The processor then performs secondary equivalence between new energy power plants. Thus, while ensuring the simulation accuracy of the electromagnetic transient equivalent model, it not only simplifies the electromagnetic transient equivalent model, but also preserves the overall structure of the new energy base as much as possible, thereby ensuring the integrity and usability of the electromagnetic transient equivalent model in engineering practice.

[0046] In some embodiments, the first-level sub-equivalence region includes a first sub-equivalence region equivalent to power equipment connected in a first topology, and / or a second sub-equivalence region equivalent to power equipment connected in a second topology.

[0047] The second-level sub-equivalent region includes a third sub-equivalent region equivalent to the new energy power stations connected by the first topology, and / or a fourth sub-equivalent region equivalent to the new energy power stations connected by the second topology.

[0048] Specifically, in a new energy power station, when multiple power devices with the same output control data type are connected by a first topology, the processor can identify these power devices as a first sub-equivalent region; when multiple power devices with the same output control data type are connected by a second topology, the processor can identify these power devices as a second sub-equivalent region. The first and second sub-equivalent regions can also be connected through either the first or second topology to form a primary equivalent region.

[0049] In a large-scale new energy base, when multiple new energy power stations with the same output control data type are connected by a first topology, the processor can identify these power stations as a third sub-equivalent region. When multiple new energy power stations with the same output control data type are connected by a second topology, the processor can identify these power stations as a fourth sub-equivalent region. The third and fourth sub-equivalent regions can also be connected through the first or second topology to form a second-level equivalent region.

[0050] In the above embodiments, by aggregating power equipment with the same output control data type into a first sub-equivalent region or a second sub-equivalent region according to topology type at the new energy power station level, and aggregating new energy power stations with the same control type into a third sub-equivalent region or a fourth sub-equivalent region according to the same topology type at the new energy large-scale base level, and allowing the first and second sub-equivalent regions, the third and fourth sub-equivalent regions to be further combined through the first or second topology structure, a first-level equivalent region and a second-level equivalent region are finally formed. Thus, a hierarchical electromagnetic transient equivalent model is constructed in the processor. The constructed electromagnetic transient equivalent model fully considers the homogeneity of control characteristics between power equipment and between new energy power stations, while retaining the differences in topology structure at different levels. This makes the equivalence simplification process more scientific and reasonable, effectively avoiding the accuracy loss caused by cross-type mixed equivalence, and providing clear organizational logic and structural support for the multi-level and refined construction of the electromagnetic transient equivalent model of the new energy large-scale base.

[0051] In some embodiments, a portion of step 1021 can be implemented via steps 1021a to 1021c: Step 1021a: Based on the power data and impedance values ​​of the electrical equipment in the first sub-equivalent region, the processor determines the first equivalent impedance value of the first sub-equivalent region, and replaces the impedance values ​​of multiple electrical equipment in the first sub-equivalent region with the first equivalent impedance value to obtain the first equivalent region model.

[0052] Assuming that devices A, B, C, and D are connected in the first topology, that is, the four electrical devices are connected in series, Figure 3 The two devices A and B shown in (a) can be equivalent to: Figure 3 The equivalent process for device X shown in (b) is similar for other connected electrical devices.

[0053] When devices A, B, C, and D are arranged as follows: Figure 3 When connected as shown, the equivalent calculations performed by the processor are as follows:

[0054] in, This represents the first equivalent impedance value of device A and device B. The second equivalent impedance value represents that of devices A, B, and C. The first target equivalent impedance value represents devices A, B, C, and D. This represents the impedance value of device A. This represents the impedance value of device B. This represents the impedance value of device C. This represents the impedance value of device D. This represents the rated active power of device A. This represents the rated active power of device B. This represents the rated active power of device C. This represents the rated active power of device D.

[0055] When the number of power devices is large, performing step-by-step calculations as described above becomes quite complex. In this case, the power devices connected in series are numbered sequentially from 1 to n according to their transmission distance from the busbar, where n is the power device furthest from the busbar. The busbar voltage is set as the reference voltage, and the AC output voltage, equivalent unit, and equivalent AC line parameters of each power device are recursively calculated based on the power flow results. After simplifying the above calculation process, a general first formula can be obtained:

[0056] in, This represents the first target equivalent impedance value from the first electrical device to the nth electrical device; This represents the impedance value of the first electrical device; This represents the impedance value of the second electrical device; This represents the impedance value of the nth electrical device, where n = 1, 2, ...; This represents the rated active power of the first electrical device; This represents the rated active power of the second electrical device; This represents the rated active power of the i-th electrical device, where i = 1, 2, ..., n.

[0057] Assuming the rated active power of each electrical device is evenly distributed, the first formula can be simplified to the first simplified formula. The first simplified formula is:

[0058] in, This represents the first target equivalent impedance value from the first electrical device to the nth electrical device; This represents the impedance value of the first electrical device; This represents the impedance value of the second electrical device; This represents the impedance value of the nth electrical device, where n = 1, 2, ...

[0059] Assuming that the rated active power of each electrical device is evenly distributed and that the impedance values ​​of each device are the same, the first formula can be simplified to the second simplified formula. The second simplified formula is:

[0060] in, This represents the target equivalent impedance value from the first electrical device to the nth electrical device; represents the impedance value of the first electrical device; n represents the number of electrical devices.

[0061] After performing equivalent calculations on the power equipment connected by a first topology at a certain location in the new energy base, the processor replaces multiple power equipment under the first topology with the obtained first target equivalent impedance value, thereby obtaining the first equivalent region model for that location. Since there may be multiple regions connected by the first topology among the power equipment in the new energy base, the processor can perform equivalent calculations and replacements on each first topology separately after identifying the first topology, ultimately obtaining multiple first equivalent region models.

[0062] Step 1021a can also be implemented through step 1021b, and steps 1021a and 1021b can also be performed simultaneously in the processor.

[0063] Step 1021b: Based on the power data and impedance values ​​of the electrical equipment in the second sub-equivalent region, the processor determines the second equivalent impedance value of the second sub-equivalent region, and replaces the impedance values ​​of multiple electrical equipment in the second sub-equivalent region with the second equivalent impedance value to obtain the second equivalent region model.

[0064] like Figure 4 As shown, when devices E, F, and G form a second topology, that is, when the three electrical devices are connected in parallel, Figure 4 The three electrical devices E, F, and G shown in (a) can be equivalent to: Figure 4The equivalent process for device Y shown in (b) is similar for other connected electrical devices.

[0065] For the identified second topology, the processor can perform equivalent calculations using the access formula. Figure 4 The specific calculation process will not be elaborated here. The second formula is:

[0066] in, This represents the target equivalent impedance value from the first electrical device to the nth electrical device; This represents the rated active power of the first electrical device; This represents the rated active power of the second electrical device; This represents the rated active power of the nth electrical device, where n = 1, 2, ...; Represents the rated active power of the i-th electrical device, i = 1, 2, ..., n; This represents the impedance value of the first electrical device; This represents the impedance value of the second electrical device; This represents the impedance value of the nth electrical device, where n = 1, 2, ...; Let represent the impedance value of the i-th electrical device, i = 1, 2, ..., n.

[0067] Assuming the rated active power of each electrical device is evenly distributed, the second formula can be simplified to a third simplified formula. The third simplified formula is:

[0068] in, This represents the target equivalent impedance value from the first electrical device to the nth electrical device; This represents the impedance value of the first electrical device; This represents the impedance value of the second electrical device; This represents the impedance value of the nth electrical device; n represents the number of electrical devices.

[0069] Assuming all electrical equipment has equal impedance values, but its rated active power is not uniformly distributed (i.e., when considering the distribution of rated active power in the transformer substation), the second formula can be simplified to the fourth simplified formula. The fourth simplified formula is:

[0070] in, This represents the target equivalent impedance value from the first electrical device to the nth electrical device; Represents the impedance value of each electrical device; This represents the rated active power of the first electrical device; This represents the rated active power of the second electrical device; This represents the rated active power of the nth electrical device, where n = 1, 2, ...

[0071] Assuming that the rated active power of each power device is evenly distributed and that the impedance values ​​between each power device and the grid connection point or the transformer are the same, the second formula can be simplified to the fifth simplified formula, which is:

[0072] in, This represents the target equivalent impedance value from the first electrical device to the nth electrical device; represents the impedance value of each electrical device; n represents the number of electrical devices.

[0073] After performing equivalent calculations on the power equipment connected by a second topology at a certain location in the new energy base, the processor replaces multiple power equipment under that second topology with the obtained second target equivalent impedance value, thereby obtaining a second equivalent region model for that location. Since there may be multiple regions connected by the second topology among the power equipment in the new energy base, the processor can perform equivalent calculations and replacements on each second topology separately after identifying the second topology, ultimately obtaining multiple second equivalent region models.

[0074] After equivalence of the first and second sub-equivalence regions, the processor can treat the multiple equivalent power devices as a single power device and generate a first equivalent structure diagram. The processor can then identify the topology formed after equivalence. If the equivalent power device forms a first or second topology with other power devices, the processor will perform equivalence on that topology again until the first and second topologies no longer exist in the generated equivalent structure diagram. Only then will the processor consider the equivalence complete.

[0075] Specifically, in two adjacent equivalent processes within the same equivalent region, there are two types: "series first, then parallel" and "parallel first, then series." When multiple power devices are connected in a series-then-parallel configuration, the processor can first use the first formula, or the first simplified formula, or the second simplified formula to perform equivalence on the multiple power devices connected in series, thereby obtaining a first equivalent device. Then, the first equivalent device and the multiple power devices connected in parallel with the first equivalent device, or the obtained equivalent device, are further equivalentd using the second formula, or the third simplified formula, or the fourth simplified formula, or the fifth simplified formula. Similarly, when multiple power devices are connected in parallel first, then series, the processor can first use the second formula, or the third simplified formula, or the fourth simplified formula, or the fifth simplified formula to perform equivalence on the multiple power devices connected in parallel, thereby obtaining a second equivalent device. Then, the second equivalent device and the multiple power devices or equivalent devices connected in series with the second equivalent device are further equivalentd using the first formula, or the first simplified formula, or the second simplified formula. Figure 5 As shown in (a), when devices a1 and a2 are connected in parallel with devices 10 to 40 in the main line, devices a1 and a2 can be equivalent to device M in a series connection equivalent manner, and devices 10 to 40 can be equivalent to device N. Device M and device N are connected in parallel, and then devices M and device N can be equivalent to device K. The equivalent structure is as follows. Figure 5 As shown in (b), device K is connected in series with device 50 in the main line. The equivalent impedance value of device K is calculated using the following formula:

[0076] in, This represents the equivalent impedance value of device K; Represents the rated active power of device 10; This represents the rated active power of device 20; This represents the rated active power of device 30; This represents the rated active power of the equipment (40). This represents the rated active power of device a1; This represents the rated active power of device a2; This represents the impedance value of device a1; This represents the impedance value of device a2.

[0077] After executing step 1021a or step 1021b, the processor can execute step 1021c: Step 1021c: The processor generates a first-level equivalent structure diagram based on the detailed structure diagram, the first equivalent region model, and / or the second equivalent region model.

[0078] The processor regenerates the first-level equivalent structure diagram based on the power equipment that does not require equivalents in the detailed structure diagram, the topology between the power equipment, one or more first equivalent region models, and / or one or more second equivalent region models, for use in subsequent steps.

[0079] In the above embodiments, by establishing equivalent impedance calculation formulas for the first and second topologies respectively, and providing various simplified formulas for typical scenarios such as uniform power distribution, identical impedance, and non-uniform power distribution, the adaptability and computational efficiency of aggregated equivalent calculation under different topologies are improved. Furthermore, the processor can decompose complex mixed topologies into "series-to-parallel" or "parallel-to-series" structures for step-by-step equivalence and equivalence, thereby simplifying complex topologies. The simplified equivalent region model can ensure accurate mapping of electrical characteristics before and after equivalence, and reduce the dimensionality and simulation burden of electromagnetic transient modeling for large-scale new energy power plants, thus laying a solid foundation for the subsequent construction of electromagnetic transient equivalent models.

[0080] In some embodiments, a portion of step 1022 can be implemented via steps 1022a to 1022c: Step 1022a: Based on the power data and impedance values ​​of the new energy power stations in the third sub-equivalent region, the processor determines the third equivalent impedance value of the third sub-equivalent region, and replaces the impedance values ​​of multiple new energy power stations in the third sub-equivalent region with the third equivalent impedance value to obtain the third equivalent region model.

[0081] Step 1022a can also be implemented through step 1022b, and steps 1022a and 1022b can also be performed simultaneously in the processor.

[0082] Step 1022b: Based on the power data and impedance values ​​of the new energy power stations in the fourth sub-equivalent region, the processor determines the fourth equivalent impedance value of the fourth sub-equivalent region, and replaces the impedance values ​​of multiple new energy power stations in the fourth sub-equivalent region with the fourth equivalent impedance value to obtain the fourth equivalent region model.

[0083] After executing step 1022a or step 1022b, the processor can execute step 1022c: Since the specific processes for generating the third and fourth equivalent region models are basically the same as those for generating the first and second equivalent region models, steps 1022a and 1022b will not be explained here.

[0084] Step 1022c: The processor determines the electromagnetic transient equivalent model based on the first-level equivalent structure diagram, the third equivalent region model, and / or the fourth equivalent region model.

[0085] The processor obtains the detailed electromagnetic transient model based on the new energy power stations that do not require equivalence in the first-level equivalent structure diagram, the topology between each new energy power station, one or more equivalent third equivalent region models, and / or one or more equivalent fourth equivalent region models.

[0086] In the above embodiments, by aggregating multiple new energy power stations with the same output control data type into a third or fourth equivalent region model according to a first and / or second topology at the new energy base level, and independently determining their equivalent impedance values ​​and replacing them using an impedance calculation method consistent with that of the power equipment level, a multi-level, same-type aggregation equivalence from power equipment to power station to base is achieved. This is organically combined with new energy power stations and other key power station-level equipment that do not require equivalence in the first-level equivalent structure diagram to construct a complete electromagnetic transient equivalent model. This scheme maintains the consistency and scalability of equivalence rules at different levels, and ensures the accurate mapping of multi-level topology and electrical characteristics before and after equivalence, improving the modeling accuracy of the new energy base and thus improving the accuracy of the obtained equivalent simulation data.

[0087] Furthermore, as a simulation method for the aforementioned operating condition faults, embodiments of this application provide an operating condition fault simulation device. This device is used to simulate operating condition faults in a large-scale new energy base, which includes multiple power equipment. Figure 6 As shown, the simulation method device 600 for this working condition fault includes: a data acquisition and analysis module 601 and a model construction and simulation module 602.

[0088] The data acquisition and analysis module 601 is used to acquire basic data of the new energy base and the topology between multiple power devices, identify the topology, and divide the topology into a first topology and a second topology.

[0089] The model building and simulation module 602 is used to perform aggregate equivalent calculations on the first and second topologies based on the basic data to obtain multiple equivalent region models, and to construct an electromagnetic transient equivalent model based on the basic data and the multiple equivalent region models.

[0090] The model building and simulation module 602 is also used to build a detailed electromagnetic transient model based on basic data and topology. After initializing the detailed electromagnetic transient model, it triggers a fault using a preset full-condition fault matrix to obtain detailed simulation data of the detailed electromagnetic transient model.

[0091] The model building and simulation module 602 is also used to initialize the electromagnetic transient equivalent model, trigger the fault using the full-condition fault matrix, and obtain equivalent simulation data.

[0092] In some embodiments, the model building and simulation module 602 is specifically used for: Isoregions are determined based on the structure diagram in the basic data. Each isoregion includes multiple isosubregions, and each isosubregion includes a first topological structure and / or a second topological structure. Based on the structural diagram, first topology and / or second topology of the new energy base, multiple first equivalent region models and / or multiple second equivalent region models are determined, and an electromagnetic transient equivalent model is constructed based on the multiple first equivalent region models and / or multiple second equivalent region models.

[0093] In some embodiments, the model building and simulation module 602 may be specifically used for: Based on the power data and impedance values ​​of the electrical equipment in the first topology, a first equivalent impedance value of the first topology is determined. This first equivalent impedance value is then used to replace the impedance values ​​of the electrical equipment in the first topology to obtain a first equivalent region model; and / or Based on the power data and impedance values ​​of the power equipment in the second topology, the second equivalent impedance value of the second topology is determined, and the impedance values ​​of the power equipment in the second topology are replaced with the second equivalent impedance value to obtain the second equivalent region model.

[0094] In some embodiments, the model building and simulation module 602 may also be specifically used for: A detailed electromagnetic transient model is constructed based on basic data and topology. Configure initial operating conditions for the electromagnetic transient model and run the detailed electromagnetic transient model. The initial operating conditions are determined based on the basic data. The operating parameters of the electromagnetic transient detailed model remain stable. The fault matrix under all operating conditions is input into the electromagnetic transient detailed model, and the detailed simulation data about the fault output by the electromagnetic transient detailed model is recorded.

[0095] In some embodiments, the model building and simulation module 602 may also be specifically used for: Configure the initial operating conditions for the electromagnetic transient equivalent model and control the operation of the electromagnetic transient equivalent model; After the operating parameters of the electromagnetic transient equivalent model stabilize, the full-condition fault matrix is ​​input into the electromagnetic transient equivalent model, and the equivalent simulation data about the fault output by the electromagnetic transient equivalent model is recorded.

[0096] The simulation device for operational faults in this application embodiment can be an electronic device or a component within an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the specific devices.

[0097] The simulation device for operating condition faults provided in this application embodiment can achieve... Figures 1 to 5 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.

[0098] This application also provides an electronic device, such as... Figure 7 As shown, the electronic device 700 includes a processor 701 and a memory 702. The memory 702 stores a program or instructions that can run on the processor 701. When the program or instructions are executed by the processor 701, they implement the various steps of the above-mentioned simulation method embodiment for the working condition fault and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0099] The memory 702 can be used to store software programs and various data. The memory 702 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 702 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 702 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0100] Processor 701 may include one or more processing units; optionally, processor 701 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 701.

[0101] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described simulation method embodiment for operating condition faults and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0102] This application also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described simulation method embodiment for operating condition faults, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0103] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0104] This application also provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the simulation method embodiment for the above-described operating condition fault, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0105] It should be noted that, in this document, 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 that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0106] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A simulation method for operational faults, characterized in that, This method is used to simulate operational faults in a large-scale new energy base, which includes multiple power devices. Acquire the basic data of the new energy base and the topology between the multiple power devices, identify the topology, and divide the topology into a first topology and a second topology; Based on the basic data, the first topology and the second topology are respectively subjected to aggregate equivalent calculations to obtain multiple equivalent region models. An electromagnetic transient equivalent model is constructed based on the basic data and the multiple equivalent region models. Based on the basic data and the topology, an electromagnetic transient detailed model is constructed. After initializing the electromagnetic transient detailed model, a fault is triggered using a preset full-condition fault matrix to obtain detailed simulation data of the electromagnetic transient detailed model. After initializing the electromagnetic transient equivalent model, the fault is triggered using the full-condition fault matrix to obtain equivalent simulation data.

2. The simulation method for operating condition faults according to claim 1, characterized in that, The electromagnetic transient detailed model is constructed based on the basic data and the topology. After initializing the electromagnetic transient detailed model, a fault is triggered using a preset full-condition fault matrix to obtain detailed simulation data of the electromagnetic transient detailed model, including: A detailed electromagnetic transient model is constructed based on the aforementioned basic data and topology. Configure initial operating conditions for the electromagnetic transient model and run the detailed electromagnetic transient model. The initial operating conditions are determined based on the basic data. Based on the stable operating parameters of the electromagnetic transient detailed model, the full-condition fault matrix is ​​input into the electromagnetic transient detailed model, and the detailed simulation data about the fault output by the electromagnetic transient detailed model is recorded.

3. The simulation method for operating condition faults according to claim 2, characterized in that, After initializing the electromagnetic transient equivalent model, the fault is triggered using the full-condition fault matrix to obtain equivalent simulation data, including: Configure the initial operating conditions for the electromagnetic transient equivalent model and control the operation of the electromagnetic transient equivalent model; After the operating parameters of the electromagnetic transient equivalent model stabilize, the full-condition fault matrix is ​​input into the electromagnetic transient equivalent model, and the equivalent simulation data about the fault output by the electromagnetic transient equivalent model is recorded.

4. The simulation method for operating condition faults according to claim 1, characterized in that, The new energy base includes multiple new energy power stations, each of which includes multiple power equipment. The basic data includes control data of the power equipment. Based on the basic data, the first topology and the second topology are aggregated and equivalently calculated to obtain multiple equivalent region models. Based on the basic data and the multiple equivalent region models, an electromagnetic transient equivalent model is constructed, including: Based on the aforementioned basic data, a detailed structural diagram of the new energy base is determined. Power equipment whose control data outputs in the same new energy power station is of the same type is identified as a first-level equivalent region. The first-level equivalent region includes multiple first-level sub-equivalent regions. After equivalence of the first-level equivalent regions, a first-level equivalent structural diagram is determined. Based on the first-level equivalent structure diagram, the new energy power stations with the same type of control data output from the new energy base are identified as second-level equivalent regions. The second-level equivalent regions include multiple second-level sub-equivalent regions. After equivalence of the second-level equivalent regions, the electromagnetic transient equivalent model is obtained.

5. The simulation method for operating condition faults according to claim 4, characterized in that, The first-level sub-equivalent region includes a first sub-equivalent region equivalent to the power equipment connected by the first topology, and / or a second sub-equivalent region equivalent to the power equipment connected by the second topology. The secondary sub-equivalent region includes a third sub-equivalent region equivalent to the new energy power stations connected by the first topology, and / or a fourth sub-equivalent region equivalent to the new energy power stations connected by the second topology.

6. The simulation method for operating condition faults according to claim 4, characterized in that, The process of equivalencing the first-level equivalent region and determining the first-level equivalent structure diagram includes: Based on the power data and impedance values ​​of the electrical equipment in the first sub-equivalent region, a first equivalent impedance value is determined in the first sub-equivalent region. The impedance values ​​of the plurality of electrical equipment in the first sub-equivalent region are then replaced with the first equivalent impedance value to obtain the first equivalent region model; and / or Based on the power data and impedance values ​​of the power equipment in the second sub-equivalent region, a second equivalent impedance value of the second sub-equivalent region is determined, and the impedance values ​​of the multiple power equipment in the second sub-equivalent region are replaced with the second equivalent impedance value to obtain the second equivalent region model. Based on the detailed structure diagram, the first equivalent region model, and / or the second equivalent region model, a first-level equivalent structure diagram is generated.

7. The simulation method for operating condition faults according to claim 6, characterized in that, The process of equivalencing the secondary equivalent region to obtain the electromagnetic transient equivalent model includes: Based on the power data and impedance values ​​of the renewable energy power stations in the third sub-equivalent region, a third equivalent impedance value for the third sub-equivalent region is determined. This third equivalent impedance value is then used to replace the impedance values ​​of multiple renewable energy power stations within the third sub-equivalent region, thereby obtaining the third equivalent region model; and / or Based on the power data and impedance values ​​of the new energy power stations in the fourth sub-equivalent region, the fourth equivalent impedance value of the fourth sub-equivalent region is determined, and the impedance values ​​of multiple new energy power stations in the fourth sub-equivalent region are replaced with the fourth equivalent impedance value to obtain the fourth equivalent region model. The electromagnetic transient equivalent model is determined based on the first-level equivalent structure diagram, the third equivalent region model, and / or the fourth equivalent region model.

8. A simulation device for operational faults, characterized in that, This method is used to simulate operational faults in a large-scale new energy base, which includes multiple different types of power equipment. The data acquisition and analysis module is used to acquire the basic data of the new energy base and the topology between the multiple power devices, identify the topology, and divide the topology into a first topology and a second topology. The model building and simulation module is used to perform aggregate equivalent calculations on the first topology and the second topology based on the basic data to obtain multiple equivalent region models, and to construct an electromagnetic transient equivalent model based on the basic data and the multiple equivalent region models. The model building and simulation module is also used to build a detailed electromagnetic transient model based on the basic data and the topology. After initializing the detailed electromagnetic transient model, a fault is triggered using a preset full-condition fault matrix to obtain detailed simulation data of the detailed electromagnetic transient model. The model building and simulation module is also used to initialize the electromagnetic transient equivalent model, trigger the fault using the full-condition fault matrix, and obtain equivalent simulation data.

9. An electronic device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that run on the processor, the program or instructions being executed by the processor to implement the steps of the simulation method for operating condition faults as described in any one of claims 1 to 7.

10. A readable storage medium having a program or instructions stored thereon, characterized in that, When the program or instructions are executed by the processor, they implement the steps of the simulation method for operating condition faults as described in any one of claims 1 to 7.

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