A Real-Time Simulation Test Modeling Method and System for New Energy Power Stations

Abstract

This invention relates to the field of power system simulation technology and discloses a real-time simulation test modeling method and system for new energy power plants. The invention establishes a simulation modeling platform that connects the virtual model of the new energy power plant with the physical equipment, and conducts low-voltage ride-through simulation tests. Based on the simulation test structure, the controller parameters of the power generation units are adjusted to obtain the control parameters of the physical controllers of multiple virtual power generation units within the new energy power plant under real-world operating conditions. This ensures the stable operation of the new energy power plant during low-voltage ride-through faults and solves the technical problem of how to determine the controller parameters of the physical controllers of the power generation units in a new energy power plant to improve the operational stability of the new energy power plant.

Description

Technical Field

[0001] This invention relates to the field of power system simulation technology, and in particular to a real-time simulation test modeling method and system for new energy power plants. Background Technology

[0002] As the entire power industry is fully committed to building new power systems, the number and capacity of renewable energy power plants with centralized grid connection are increasing. These renewable energy power plants typically refer to those that transmit their generated power to a 220kV or 500kV voltage level grid. The installed capacity of these renewable energy power plants is generally above 50MW, and may even reach several gigawatts, directly contributing to the safe and stable operation of the main power grid.

[0003] Therefore, before centralized grid-connected renewable energy power plants can generate electricity, it is imperative to model the electromagnetic transients at the plant level. The purpose is to add the electromagnetic transient model of the newly built renewable energy power plant to the electromagnetic transient model of the AC / DC power grid for simulation testing. Based on the specific grid operation mode and line maintenance operation mode, it is essential to pre-assess the risks to the safe and stable operation of the renewable energy power plant, formulate emergency response plans, and ensure the safe, stable, and reliable operation of the renewable energy power plant under various operating modes, including conventional operation and grid line maintenance operation, thereby safeguarding the overall power grid security.

[0004] Currently, controller parameters for renewable energy power plants are typically optimized through simulation using simplified models, which neglect the interactions between generation units. During low-voltage ride-through faults (LVRS), a sudden drop in grid voltage can cause renewable energy equipment to disconnect from the grid, triggering a cascading failure and impacting the stability of the entire power system. Existing simulation methods cannot provide reasonable controller parameters, resulting in renewable energy power plants being unable to effectively cope with voltage dips during actual LVRS, affecting their operational performance and grid security. Therefore, there is an urgent need to develop more accurate simulation models to ensure the stable operation of renewable energy power plants during LVRS. Summary of the Invention

[0005] This invention provides a real-time simulation test modeling method and system for new energy power plants, which solves the technical problem of how to determine the controller parameters of the entity controller of the power generation unit of a new energy power plant in order to improve the operational stability of the new energy power plant.

[0006] The first aspect of this invention provides a real-time simulation test modeling method for new energy power plants, comprising:

[0007] In response to the request for simulation modeling of the new energy power station, a simulation modeling platform for the new energy power station is built;

[0008] Low voltage ride-through simulation is performed on the simulation modeling platform to obtain test data of the power generation unit of the new energy power station. The test data of the power generation unit includes test data of the actual controlled power generation unit and test data of multiple virtual controlled power generation units.

[0009] The test data of each virtual power generation unit were compared with the test data of the actual power generation unit.

[0010] Based on the comparison results, the target simulation controller parameters of multiple virtual control power generation units in the new energy power station are determined.

[0011] The target simulation controller parameters are used as the control parameters of the physical controller of the associated virtual power generation unit.

[0012] Optionally, the new energy power station includes grid connection, monitoring device, communication interface device, multiple power generation units and multiple physical controllers connected to the power generation units, and the simulation modeling platform of the new energy power station is built in response to the simulation modeling request of the new energy power station.

[0013] In response to the simulation modeling request for the new energy power station, one power generation unit is randomly selected from the multiple power generation units as the actual controlled power generation unit, and the remaining power generation units are used as virtual controlled power generation units.

[0014] The physical controller connected to the actual control power generation unit is used as the target controller;

[0015] An equivalent grid model for the grid connection, a real-controlled main circuit model for the actual controlled power generation unit, and virtual controlled main circuit models and simulation controller models for multiple virtual controlled power generation units are constructed using a real-time simulator. The virtual controlled main circuit models and simulation controller models are connected in a one-to-one correspondence.

[0016] The monitoring device, the communication interface device, the target controller, and the real-time simulator are coupled and connected to build a simulation modeling platform for the new energy power station.

[0017] Optionally, the step of coupling and connecting the monitoring device, the communication interface device, the target controller, and the real-time simulator to build the simulation modeling platform for the new energy power station includes:

[0018] Connect the actual controlled main circuit model and the multiple virtual controlled main circuit models to the equivalent power grid model;

[0019] The target controller is connected to the actual control main loop model through the communication interface device;

[0020] Connect the monitoring device to the target controller;

[0021] Multiple simulation controller models are connected to the monitoring device through the communication interface device to build a simulation modeling platform for the new energy power station.

[0022] Optionally, the test data of the power generation unit includes the effective value waveform of the grid connection point voltage, the active power waveform of the power generation unit, and the reactive power waveform of the power generation unit.

[0023] Optionally, determining the target simulation controller parameters for multiple virtual control power generation units within the new energy power station based on the comparison results includes:

[0024] When the test data of the virtual power generation unit is consistent with the test data of the actual power generation unit, the controller parameters associated with the actual power generation unit are used as the target simulation controller parameters of the virtual power generation unit.

[0025] If the test data of the virtual power generation unit is inconsistent with the test data of the actual power generation unit, the initial simulation controller parameters of the virtual power generation unit are adjusted until the preset adjustment conditions are met, and the target simulation controller parameters are output.

[0026] Optionally, the initial simulation controller parameters include the reactive power support coefficient, reactive current recovery rate, active current recovery rate, and current inner loop coefficient; the target simulation controller parameters include the first-stage target simulation controller parameters and the second-stage target simulation controller parameters; adjusting the initial simulation controller parameters of the virtual control generator unit until the preset adjustment conditions are met, and then outputting the target simulation controller parameters, includes:

[0027] Adjust the reactive power support coefficient of the virtual power generation unit until the reactive power of the virtual power generation unit and the actual power generation unit in the preset first stage of the low voltage ride-through simulation are consistent. Then, use the reactive power support coefficient at the current moment as the target simulation controller parameter for the first stage.

[0028] The first current reference value is determined based on the reactive power support coefficient at the current moment;

[0029] Based on the first current reference value, the virtual control dq axis voltage of the first stage is adjusted by adjusting the current inner loop coefficient of the virtual control power generation unit. When the first stage dq axis voltage is consistent with the first stage real control dq axis voltage of the real control power generation unit, the current inner loop coefficient at the current moment is used as the target simulation controller parameter of the first stage.

[0030] Adjust the reactive current recovery rate and the active current recovery rate of the virtual power generation unit until the reactive power recovery rate of the virtual power generation unit and the active power recovery rate of the actual power generation unit are consistent in the preset second stage under low voltage ride-through simulation. Then, the reactive current recovery rate and the active current recovery rate at the current moment are used as the target simulation controller parameters for the second stage.

[0031] The second current reference value is determined based on the current reactive current recovery rate and the current active current recovery rate.

[0032] Based on the second current reference value, the second-stage virtual control dq-axis voltage is adjusted by adjusting the current inner loop coefficient of the virtual control power generation unit. When the second-stage dq-axis voltage is consistent with the second-stage real control dq-axis voltage of the real control power generation unit, the current inner loop coefficient at the current moment is used as the second-stage target simulation controller parameter.

[0033] The second aspect of this invention provides a real-time simulation test modeling system for new energy power plants, comprising:

[0034] The response module is used to respond to simulation modeling requests for new energy power plants and to build a simulation modeling platform for the new energy power plants.

[0035] The simulation module is used to perform low-voltage ride-through simulation on the simulation modeling platform and obtain the test data of the power generation unit of the new energy power station. The test data of the power generation unit includes the test data of the actual controlled power generation unit and the test data of multiple virtual controlled power generation units.

[0036] The comparison module is used to compare the test data of each virtual power generation unit with the test data of the actual power generation unit.

[0037] The data processing module is used to determine the target simulation controller parameters of multiple virtual control power generation units in the new energy power station based on the comparison results;

[0038] The data output module is used to use the target simulation controller parameters as control parameters for the physical controller of the associated virtual power generation unit.

[0039] The third aspect of the present invention provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the real-time simulation test modeling method for new energy power stations as described in any of the preceding claims.

[0040] The fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed, it implements the real-time simulation test modeling method for new energy power stations as described in any of the preceding claims.

[0041] The fifth aspect of the present invention provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, wherein, when the program instructions are executed by a computer, the computer performs a real-time simulation test modeling method for new energy power stations as described in any of the preceding claims.

[0042] As can be seen from the above technical solutions, the present invention has the following advantages:

[0043] In this invention, in response to a request for simulation modeling of a new energy power station, a simulation modeling platform for the new energy power station is built; low-voltage ride-through simulation is performed on the simulation modeling platform to obtain test data of the power generation units of the new energy power station, including test data of the actual controlled power generation units and test data of multiple virtual controlled power generation units; the test data of each virtual controlled power generation unit are compared with the test data of the actual controlled power generation units; the target simulation controller parameters of multiple virtual controlled power generation units in the new energy power station are determined based on the comparison results; and the target simulation controller parameters are used as the control parameters of the physical controllers of the associated virtual controlled power generation units.

[0044] This invention establishes a simulation modeling platform that connects the virtual model of a new energy power station with the physical equipment, and conducts low-voltage ride-through simulation tests. Based on the simulation test structure, the controller parameters of the power generation units are adjusted to obtain the control parameters of the physical controllers of multiple virtual power generation units in the new energy power station under real-world operating conditions. This ensures the stable operation of the new energy power station during low-voltage ride-through faults and solves the technical problem of how to determine the controller parameters of the physical controllers of the power generation units in a new energy power station to improve the operational stability of the new energy power station. Attached Figure Description

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

[0046] Figure 1 A flowchart illustrating the steps of a real-time simulation test modeling method for a new energy power station provided in Embodiment 1 of the present invention;

[0047] Figure 2This is a flowchart illustrating the steps of a real-time simulation test modeling method for a new energy power station provided in Embodiment 2 of the present invention.

[0048] Figure 3 This is a schematic diagram of the simulation modeling platform.

[0049] Figure 4 This is a schematic diagram showing the connection between a primary system simulation model and an equivalent power grid model.

[0050] Figure 5 This is a schematic diagram showing the connection between two power generation unit models and the equivalent power grid model.

[0051] Figure 6 A flowchart illustrating the real-time simulation test modeling process for new energy power plants;

[0052] Figure 7 This is a schematic diagram of the data waveforms during a typical low-voltage ride-through process;

[0053] Figure 8 This is a schematic diagram of the simulation controller model under low voltage ride-through simulation.

[0054] Figure 9 This is a structural block diagram of a real-time simulation test modeling system for a new energy power station provided in Embodiment 3 of the present invention;

[0055] Figure 10 This is a structural block diagram of a computer device provided in Embodiment 4 of the present invention. Detailed Implementation

[0056] This invention provides a real-time simulation test modeling method and system for new energy power plants, which solves the technical problem of how to determine the controller parameters of the entity controller of the power generation unit of a new energy power plant in order to improve the operational stability of the new energy power plant.

[0057] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0058] The power generation units of centralized new energy power plants mainly include wind turbines, photovoltaic units, SVG units, and STATCOM units. These power generation units and reactive power compensation units have small individual capacities but are numerous, and all are connected to the grid by power electronic converters, which is very different from traditional synchronous generator units. These changes place higher demands on power system simulation technology, mainly in two aspects: first, a larger scale of parallel simulation computing resources are needed to complete electromagnetic transient simulation; second, a smaller simulation step size is needed to achieve accurate simulation of power electronic switching devices, in order to conduct system stability analysis on large-scale new energy power systems.

[0059] Existing electromagnetic transient modeling schemes for new energy power plants have the following main characteristics:

[0060] (1) In the early stage of planning and construction of new energy power stations, important equipment such as generator sets have not yet been tendered and procured, nor have they been put into operation. Therefore, the model of the newly built power station can only be formed by modifying the parameters such as capacity and grid connection voltage based on the existing typical new energy power station model. The model is relatively rough and does not have the new technical characteristics of the new energy generator sets of the power station currently under construction.

[0061] (2) During the operation of new energy power stations after construction, on-site tests are conducted to fit and model electromagnetic transients. However, on-site tests require coordination among numerous scheduling units, operation units, and on-site implementation units, and the test window is very tight, making it impossible to cover all the anticipated tests, and relying on a large investment of manpower and resources. As a result, even after the new power stations are put into operation, it is difficult to establish accurate electromagnetic transient models through on-site tests.

[0062] However, the following problems will exist:

[0063] (1) The electromagnetic transient model is based on the typical model parameters and does not have new technical features. It cannot reflect the electromagnetic transient characteristics of specific new energy power stations.

[0064] (2) The on-site test conditions are limited, and a lot of manpower and resources are needed to obtain test data.

[0065] Please see Figure 1 , Figure 1 The flowchart illustrates the steps of a real-time simulation test modeling method for a new energy power station provided in Embodiment 1 of the present invention.

[0066] This invention provides a real-time simulation test modeling method for new energy power plants, comprising:

[0067] Step 101: Respond to the simulation modeling request for the new energy power station and build a simulation modeling platform for the new energy power station.

[0068] A simulation modeling request refers to a request instruction issued for electromagnetic transient modeling of a new energy power plant.

[0069] A simulation modeling platform refers to a platform built on the interaction and connection between electromagnetic transient modeling and physical equipment, used to conduct low-voltage ride-through simulations.

[0070] It should be noted that electromagnetic transient models can provide a foundation for low-voltage ride-through simulation. When constructing a low-voltage ride-through simulation model, the circuit component characteristics, electromagnetic coupling relationships, and other factors considered in electromagnetic transient modeling can be directly applied to low-voltage ride-through simulation.

[0071] In this embodiment of the invention, in response to the received request instruction information for electromagnetic transient modeling of new energy power stations, a simulation modeling platform corresponding to the new energy power station is built based on the interactive connection between electromagnetic transient modeling and physical equipment, for carrying out low voltage ride-through simulation.

[0072] Step 102: Perform low-voltage ride-through simulation on the simulation modeling platform to obtain test data of the power generation unit of the new energy power station. The test data of the power generation unit includes test data of the actual controlled power generation unit and test data of multiple virtual controlled power generation units.

[0073] In this embodiment of the invention, the model parameters of each electromagnetic transient model are set, the simulation modeling platform is run, a low voltage ride-through simulation test is carried out, and the test data of the selected real-controlled power generation unit and the test data of multiple virtual-controlled power generation units are recorded.

[0074] Step 103: Compare the test data of each virtual power generation unit with the test data of the actual power generation unit.

[0075] In this embodiment of the invention, the test data of each virtual power generation unit is compared with the test data of the actual power generation unit, that is, the consistency comparison is performed between the test data of one virtual power generation unit and the test data of one actual power generation unit.

[0076] Step 104: Determine the target simulation controller parameters for multiple virtual control power generation units within the new energy power station based on the comparison results.

[0077] In this embodiment of the invention, when the test data of the virtual power generation unit is consistent with the test data of the actual power generation unit, the controller parameters associated with the actual power generation unit are used as the target simulation controller parameters of the virtual power generation unit; when the test data of the virtual power generation unit is inconsistent with the test data of the actual power generation unit, the initial simulation controller parameters of the virtual power generation unit are adjusted until the preset adjustment conditions are met, and the target simulation controller parameters are output.

[0078] Step 105: Use the target simulation controller parameters as the control parameters of the physical controller of the associated virtual power generation unit.

[0079] In this embodiment of the invention, the control parameters of the physical controller connected to the virtual power generation unit in the new energy power station are adjusted to the parameters of the target simulation controller.

[0080] In this invention, in response to a request for simulation modeling of a new energy power station, a simulation modeling platform for the new energy power station is built; low-voltage ride-through simulation is performed on the simulation modeling platform to obtain test data of the power generation units of the new energy power station, including test data of the actual controlled power generation units and test data of multiple virtual controlled power generation units; the test data of each virtual controlled power generation unit are compared with the test data of the actual controlled power generation units; the target simulation controller parameters of multiple virtual controlled power generation units in the new energy power station are determined based on the comparison results; and the target simulation controller parameters are used as the control parameters of the physical controllers of the associated virtual controlled power generation units.

[0081] This invention establishes a simulation modeling platform that connects the virtual model of a new energy power station with the physical equipment, and conducts low-voltage ride-through simulation tests. Based on the simulation test structure, the controller parameters of the power generation units are adjusted to obtain the control parameters of the physical controllers of multiple virtual power generation units in the new energy power station under real-world operating conditions. This ensures the stable operation of the new energy power station during low-voltage ride-through faults and solves the technical problem of how to determine the controller parameters of the physical controllers of the power generation units in a new energy power station to improve the operational stability of the new energy power station.

[0082] Please see Figure 2 , Figure 2 The flowchart illustrates the steps of a real-time simulation test modeling method for a new energy power station provided in Embodiment 2 of the present invention.

[0083] This invention proposes a real-time simulation test modeling method based on a renewable energy power plant equivalent grid model. By establishing a simulation modeling test platform in the laboratory, it enables the modeling of electromagnetic transient models for any renewable energy unit, ensuring the latest technical characteristics of the electromagnetic transient models of renewable energy power plants and enabling the simulation model to reflect the specific electromagnetic transient characteristics of the renewable energy power plant in the field. Experimental data is acquired through semi-physical simulation to establish a detailed electromagnetic transient digital model, which is then applied to the electromagnetic transient simulation analysis of large power grids.

[0084] Based on the constructed simulation modeling platform and experimental methods, a digital model of the new energy power generation unit controller that is consistent with the field can be established in the real-time simulator, and the experimental conditions and tests can be carried out in a completely consistent manner. By conducting low-voltage ride-through simulation and controller parameter adjustment tests on the simulation modeling platform, the control characteristics of the new energy hardware control device (actually controlled power generation unit) and the control characteristics of the new energy digital control model (virtually controlled power generation unit) are consistent in response in the simulation model. This provides a simple real-time simulation test method for accurate modeling and comparative testing of the new energy digital control model.

[0085] Advantages of this invention: Only one electrical main circuit model of a power generation unit and one corresponding external controller hardware device (actually controlled power generation unit) need to be established. Through simulation modeling and controller parameter adjustment experiments, an accurate digital simulation model of the controller of the virtual power generation unit can be established. Furthermore, the consistency of the electromagnetic transient characteristics of the hardware controller (actually controlled power generation unit) and the controller digital model (virtually controlled power generation unit) can be tested under the same simulation environment and test conditions. This provides a simple laboratory implementation method for accurate modeling and test comparison of new energy power generation units, which is not constrained by on-site test conditions and can conduct simulation tests under any operating conditions as needed.

[0086] The simulation modeling platform includes an electromagnetic transient model of a new energy power station built by the RTDS real-time simulator, monitoring devices, communication interface devices, and physical controllers connected to the actual power generation units.

[0087] The electromagnetic transient model of the new energy power station includes an equivalent grid model connected to the grid, a real-controlled main circuit model of the actual controlled power generation unit, and virtual-controlled main circuit models and simulation controller models of multiple virtual-controlled power generation units. The electromagnetic transient model of the new energy power station is used to accurately simulate the electromagnetic relationship inside the generator, the switching action of the converter, etc., so as to accurately reflect its operating characteristics in the grid connected to the grid corresponding to the new energy equivalent grid model.

[0088] Then, the virtual electromagnetic transient model of the new energy power station, built within the RTDS real-time simulator, is connected to the physical hardware devices within the new energy power station to form a simulation modeling platform for the new energy power station.

[0089] This invention provides a real-time simulation test modeling method for new energy power plants, comprising:

[0090] Step 201: Respond to the simulation modeling request for the new energy power station and build a simulation modeling platform for the new energy power station.

[0091] Furthermore, the new energy power station includes grid connection, monitoring equipment, communication interface equipment, multiple power generation units, and multiple physical controllers connected to the power generation units. Step 201 may include the following sub-steps:

[0092] S11. In response to the simulation modeling request for the new energy power station, select one power generation unit from multiple power generation units as the actual controlled power generation unit, and the remaining power generation units as the virtual controlled power generation units.

[0093] S12. The physical controller connected to the actual power generation unit is used as the target controller.

[0094] S13. Construct an equivalent power grid model connected to the power grid, a real-controlled main circuit model of the real-controlled power generation unit, and virtual-controlled main circuit models and simulation controller models of multiple virtual-controlled power generation units through a real-time simulator. The virtual-controlled main circuit models and simulation controller models are connected in a one-to-one correspondence.

[0095] S14. Couple and connect the monitoring device, communication interface device, target controller and real-time simulator to build a simulation modeling platform for new energy power plants.

[0096] Furthermore, S14 may include the following sub-steps:

[0097] S141. Connect the actual control main circuit model and multiple virtual control main circuit models with the equivalent power grid model.

[0098] S142. Connect the target controller to the actual control main loop model through a communication interface device.

[0099] S143. Connect the monitoring device to the target controller.

[0100] S144. Connect multiple simulation controller models to the monitoring device through communication interface devices to build a simulation modeling platform for new energy power plants.

[0101] For ease of understanding, the following example uses a new energy power station (Project No. 1 Power Station) that includes one actually controlled power generation unit (Power Generation Unit No. 1) and one virtually controlled power generation unit (Power Generation Unit No. 2). Please refer to [link / reference]. Figure 3 , Figure 3 Here is a schematic diagram of the simulation modeling platform:

[0102] 1. Real-time simulation device (RTDS real-time simulator): This real-time simulation device runs an equivalent power grid model connected to the power grid. The equivalent power grid model is connected to the "Electrical main circuit model of No.1 power generation unit of No.1 power plant", "Electrical main circuit model of No.2 power generation unit of No.1 power plant", and "Digital model of controller (simulation controller model) of No.2 power generation unit of No.1 power plant".

[0103] It should be noted that in the unit models running in this RTDS real-time simulator, only the electrical main circuit model of unit #1 is established; a controller digital model is not required. The controller of unit #1 is connected to the RTDS real-time simulator via a communication interface device from the actual hardware control device (target controller) to realize the control function of unit #1. Unit #2 is then established. The electrical main circuit model and controller digital model of unit #2 are also provided.

[0104] Meanwhile, power generation units #1 and #2 are connected to external monitoring devices via communication interface devices to monitor and compare the operating status of the two power generation units at the power plant.

[0105] For ease of explanation, Figure 3 Only two power generation units are used as examples, but this approach is generalizable and applicable to power plant models with multiple generator units. The third and fourth power generation units can be modeled in the same way as the second unit and communicate with the monitoring system through a communication interface device to complete the model building of the entire new energy power plant.

[0106] 2. Communication Interface Device: Enables communication between the real-time simulation device and the controller device of the first power generation unit, as well as the monitoring system device. Specific examples: RTDS dedicated communication devices GTDO, GTDI, GTAO, GTAI, GTNET, GOOSE-SV.

[0107] 3. Controller device for No. 1 power generation unit: The controller device for No. 1 power generation unit is of the same model as the controller device for No. 1 power generation unit operating on site.

[0108] 4. Monitoring system: realizes the acquisition and comparison of electrical quantities of power generation unit 1 and power generation unit 2.

[0109] 5. Connection relationships:

[0110] Connection line 1: Signals such as grid-side voltage, grid-side current, generator terminal voltage, generator terminal current, and generator circuit breaker switch position of generator unit #1;

[0111] Connection line 2: Control signals such as trigger pulses for the converter of generator unit #1;

[0112] Connection line 3: Signals such as grid-side voltage, grid-side current, generator terminal voltage, generator terminal current, and generator circuit breaker switch position for generator units #1 and #2;

[0113] Connection line 4: Control signals for starting and stopping of generator units #1 and #2;

[0114] Connection line 5: Start-up and shutdown command signals for generator unit #1;

[0115] Connection line 6: Monitoring signal of generator unit #1.

[0116] It should be noted that the RTDS real-time simulator builds a primary system simulation model (electrical main circuit model of the power generation unit) and a secondary system simulation model. The primary system simulation model includes the new energy model and the converter model.

[0117] Please see Figure 4 , Figure 4 This is a schematic diagram showing the connection between a primary system simulation model and an equivalent power grid model.

[0118] New energy models are classified into photovoltaic array models, permanent magnet motor models, and doubly fed motor models based on their different power generation principles.

[0119] The converter model has different converter structures depending on the corresponding new energy type.

[0120] The converter corresponding to the photovoltaic array model is a DC-DC converter + DC / AC grid-connected inverter model.

[0121] The converter corresponding to the permanent magnet motor model is an AC / DC converter + DC / AC converter model.

[0122] The converter corresponding to the doubly fed motor model is a rotor winding AC / DC converter + DC / AC converter model.

[0123] It should be noted that it is necessary to ensure Figure 3 The structure and parameters of the primary system simulation models of power generation unit 1 and power generation unit 2 are completely identical.

[0124] Therefore, this step only requires establishing a new energy + converter model, named Power Generation Unit 1 and Power Generation Unit 2 respectively, and connecting these two power generation units in parallel to the same grid connection point. For example... Figure 5 As shown, Figure 5 This is a schematic diagram showing the connection between two power generation unit models and the equivalent power grid model.

[0125] Among them, the equivalent grid model is a voltage source model with internal impedance, which simulates the grid system with different short-circuit ratios for new energy power generation units by setting different internal impedance values.

[0126] It should be noted that the secondary system simulation model is the digital model of the generator unit controller. In the RTDS real-time simulator, only the virtual control generator unit (generator unit #2) needs to establish a secondary system simulation model.

[0127] Please refer to 6. Figure 6 A schematic diagram of the process for modeling and testing real-time simulation of new energy power plants.

[0128] Step 1: Build a simulation modeling platform for new energy power plants.

[0129] Step 2: Establish simulation models, including primary simulation models and secondary system simulation models. The primary system simulation models include the new energy model and the converter model.

[0130] Step 3: Run the simulation modeling platform and start the controller and monitoring system of Unit 1.

[0131] Step 4: Conduct a simulation test. Apply the same input to both generator units #1 and #2, and measure the controller outputs of generator units #1 and #2. If the response of the generator unit #2 controller (digital model) is consistent with that of the generator unit #1 controller (hardware control device), proceed to Step 6, end the test, and output the associated controller parameters of generator unit #1 as the target simulation controller parameters for generator unit #2. If the response of the generator unit #2 controller (digital model) is inconsistent with that of the generator unit #1 controller (hardware control device), proceed to Step 5.

[0132] Step 5: Adjust the structure or parameters of the #2 generator unit controller (digital model) until the response of the #2 generator unit controller (digital model) is consistent with that of the #1 generator unit controller (hardware control device).

[0133] Step 6: End the experiment and output the target simulation controller parameters for generator unit #2.

[0134] In this embodiment of the invention, the specific implementation process of step 201 is similar to that of step 101, and will not be repeated here.

[0135] Step 202: Perform low-voltage ride-through simulation on the simulation modeling platform to obtain test data of the power generation unit of the new energy power station. The test data of the power generation unit includes test data of the actual controlled power generation unit and test data of multiple virtual controlled power generation units.

[0136] Furthermore, the test data of the power generation unit includes the effective value waveform of the grid connection point voltage, the active power waveform of the power generation unit, and the reactive power waveform of the power generation unit.

[0137] First, a standardized method for classifying voltage, active power, and reactive power during the low-voltage fault ride-through transient process of new energy generating units should be established, such as... Figure 7 As shown, Figure 7 This is a schematic diagram of the data waveforms during a typical low-voltage ride-through process.

[0138] Figure 7 In this context, U represents the effective voltage at the grid connection point of the new energy generating unit, P represents the active power generated by the new energy generating unit, and Q represents the reactive power generated by the new energy generating unit.

[0139] Based on the time of the event, the low-voltage ride-through time of the new energy unit is divided into 5 time points, namely t1 to t5.

[0140] t1 is the starting time of the grid connection point fault. At this time, the grid connection point voltage drops rapidly, the active power decreases, and the reactive power increases.

[0141] t2 is the time when the grid connection point fault ends. At this time, the grid connection point voltage begins to recover, the active power begins to recover, and the reactive power increases with the increase of voltage.

[0142] t3 is the moment when the grid connection point voltage recovers to the pre-fault voltage, and reactive power begins to withdraw.

[0143] t4 is the moment when the reactive power recovers to the state before the fault.

[0144] t5 is the moment when the active power recovers to the state before the fault.

[0145] It should be noted that in the following description, time t1-t3 is defined as the preset first stage, and time t3-t5 is defined as the preset second stage.

[0146] In this embodiment of the invention, a low-voltage ride-through simulation is performed on the simulation modeling platform to obtain the test data of each power generation unit in the new energy power station.

[0147] Step 203: Compare the test data of each virtual power generation unit with the test data of the actual power generation unit.

[0148] In this embodiment of the invention, the test data of each virtual power generation unit are compared with the test data of the actual power generation unit.

[0149] Step 204: When the test data of the virtual power generation unit is consistent with the test data of the actual power generation unit, the controller parameters associated with the actual power generation unit are used as the target simulation controller parameters of the virtual power generation unit.

[0150] In this embodiment of the invention, when the test data of the virtual control power generation unit is consistent with the test data of the actual control power generation unit, that is, when the effective value waveform of the grid connection point voltage, the active power waveform of the power generation unit, and the reactive power waveform of the power generation unit are all consistent, the controller parameters associated with the actual control power generation unit are directly used as the target simulation controller parameters of the virtual control power generation unit. In other words, the control parameters of the physical controller connected to the virtual control power generation unit in the new energy power station are adjusted to be consistent with the controller parameters connected to the actual control power generation unit.

[0151] Step 205: When the test data of the virtual control power generation unit is inconsistent with the test data of the actual control power generation unit, adjust the initial simulation controller parameters of the virtual control power generation unit until the preset adjustment conditions are met, and output the target simulation controller parameters.

[0152] Furthermore, the initial simulation controller parameters include the reactive power support coefficient, reactive current recovery rate, active current recovery rate, and current inner loop coefficient. The target simulation controller parameters include the first-stage target simulation controller parameters and the second-stage target simulation controller parameters. Step 205 may include the following sub-steps:

[0153] It should be noted that you should refer to [link / reference]. Figure 8 , Figure 8 This is a schematic diagram of the simulation controller model under low voltage ride-through simulation. In low voltage ride-through simulation, a two-stage adjustment is required. The controller parameters of the simulation controller model corresponding to the virtual generator unit need to be adjusted to ensure that the low voltage ride-through response of the virtual generator unit is consistent with that of the real generator unit. The adjustment steps for the first and second stages are as follows:

[0154] In the first preset stage, i.e., the commanded values ​​of the dq-axis current at times t1-t3, the new energy generating units prioritize providing reactive power. The reference value of the reactive current in the first stage is set as follows:

[0155] (1)

[0156] In the formula, This represents the first reactive current reference value. This indicates the reference value of reactive current before the fault occurred. Indicates the reactive power support coefficient. Indicates the preset voltage. This represents the d-axis voltage at the grid connection point in the dq synchronous rotating coordinate system. Indicates the rated current of the new energy unit. This indicates reactive current limiting.

[0157] The active current reference value for the first stage is set as follows:

[0158] (2)

[0159] In the formula, This represents the first active current reference value. Indicates the maximum current. This indicates the rated reference value of the d-axis current.

[0160] In the preset second stage, i.e., the commanded values ​​of the dq-axis current at times t3-t5, the reactive current reference values ​​for the second stage are set as follows:

[0161] (3)

[0162] In the formula, This represents the second reactive current reference value. Indicates the reactive current recovery rate. Indicates the current moment. This indicates the moment when reactive power recovers to its pre-fault state. This represents the reactive power at time t4.

[0163] The active current reference value for the second stage is set as follows:

[0164] (4)

[0165] In the formula, This represents the second active current reference value. Indicates the active current recovery rate. This represents the active power at time t4.

[0166] In both the first and second preset stages, the following formula (5) is used to generate the dq-axis modulation wave reference value:

[0167] The reference value for the d-axis modulated wave is:

[0168] The reference value for the q-axis modulated wave is:

[0169] In the formula, This represents the reference value for the d-axis modulated wave. Indicates synchronous speed. This represents the inductance of an AC filter under reactive current. This represents the proportionality coefficient of the inner current loop. This indicates the first or second reactive current reference value. This represents the active current feedback value. Indicates the integral coefficient of the inner current loop. This represents the reference value for the q-axis modulated wave. This represents the inductance of an AC filter under active current. This indicates the first or second active current reference value. This indicates the reactive current feedback value.

[0170] It should be noted that when and When the first active current reference value and the first reactive current reference value are used, the adjustment is to regulate the virtual control dq axis voltage of the first stage, and the generated d-axis modulation wave reference value and q-axis modulation wave reference value of the first stage are used. The second stage is similar and will not be described in detail here.

[0171] S21. Adjust the reactive power support coefficient of the virtual control power generation unit until the reactive power of the virtual control power generation unit and the actual control power generation unit in the preset first stage of the low voltage ride-through simulation is consistent. Then, use the reactive power support coefficient at the current moment as the target simulation controller parameter for the first stage.

[0172] In this embodiment of the invention, the reactive power support coefficient of the virtual control power generation unit is adjusted. The reactive power of the virtual control generator unit can be made consistent with that of the actual control generator unit during the time intervals from t1 to t3, and the reactive power support coefficient at the current time can be used as the target simulation controller parameter for the first stage.

[0173] S22. Determine the first current reference value based on the reactive power support coefficient at the current moment, wherein the first current reference value includes the first active current reference value and the first reactive current reference value.

[0174] In this embodiment of the invention, the first reactive current reference value is obtained based on the reactive support coefficient at the current moment and the above formula (1), and then substituted into formula (2) to obtain the first active current reference value.

[0175] S23. Based on the first current reference value, adjust the first-stage virtual control dq-axis voltage by adjusting the current inner loop coefficient of the virtual control power generation unit. When the first-stage dq-axis voltage is consistent with the first-stage real control dq-axis voltage of the real control power generation unit, the current inner loop coefficient at the current moment is used as the first-stage target simulation controller parameter.

[0176] It should be noted that the current inner loop coefficient includes the current inner loop proportional coefficient and the current inner loop integral coefficient.

[0177] In this embodiment of the invention, the first current reference value is substituted into formula (5), and the current inner loop proportional coefficient of the virtual control power generation unit is adjusted. and the integral coefficient of the inner current loop Until it equals the current inner loop proportional coefficient of the actual controlled power generation unit. and the integral coefficient of the inner current loop If the dq-axis voltage of the first stage is consistent with the actual dq-axis voltage of the actual control unit in the first stage, then the current inner loop coefficient at the current moment will be used as the target simulation controller parameter of the first stage.

[0178] S24. Adjust the reactive current recovery rate and active current recovery rate of the virtual control generator unit until the reactive power recovery rate of the virtual control generator unit and the actual control generator unit are consistent in the preset second stage under low voltage ride-through simulation, and the active power recovery rate of the virtual control generator unit and the actual control generator unit are consistent. Then, use the reactive current recovery rate and active current recovery rate at the current moment as the target simulation controller parameters for the second stage.

[0179] In this embodiment of the invention, the reactive current recovery rate of the virtual control power generation unit is adjusted. and the recovery rate of active current This allows the active power recovery rate and reactive power recovery rate of the virtual control generator unit to be consistent with those of the actual control generator unit from time t3 to t5. Then, the reactive current recovery rate and active current recovery rate at the current time are used as the parameters of the target simulation controller in the second stage.

[0180] S25. Determine the second current reference value based on the current reactive current recovery rate and active current recovery rate, wherein the second current reference value includes the second active current reference value and the second reactive current reference value.

[0181] In this embodiment of the invention, based on the reactive current recovery rate at the current moment, the second reactive current reference value is obtained based on the above formula (3). Based on the active current recovery rate at the current moment, the value is then substituted into formula (4) to obtain the second active current reference value.

[0182] S26. Based on the second current reference value, adjust the second-stage virtual control dq-axis voltage by adjusting the current inner loop coefficient of the virtual control power generation unit. When the second-stage dq-axis voltage is consistent with the second-stage real control dq-axis voltage of the real control power generation unit, the current inner loop coefficient at the current moment is used as the second-stage target simulation controller parameter.

[0183] In this embodiment of the invention, the second current reference value is substituted into formula (5), and the current inner loop proportional coefficient of the virtual control power generation unit is adjusted. and the integral coefficient of the inner current loop Until it equals the current inner loop proportional coefficient of the actual controlled power generation unit. and the integral coefficient of the inner current loop If the second-stage dq-axis voltage is consistent with the second-stage actual dq-axis voltage of the actual control unit within the preset second stage, then the current inner loop coefficient at the current moment will be used as the target simulation controller parameter for the second stage.

[0184] Step 206: Use the target simulation controller parameters as the control parameters of the physical controller of the associated virtual power generation unit.

[0185] In this embodiment of the invention, the control parameters of the physical controller connected to the virtual power generation unit in the new energy power station are adjusted to the parameters of the target simulation controller.

[0186] In this invention, in response to a request for simulation modeling of a new energy power station, a simulation modeling platform for the new energy power station is built; low-voltage ride-through simulation is performed on the simulation modeling platform to obtain test data of the power generation units of the new energy power station, including test data of the actual controlled power generation units and test data of multiple virtual controlled power generation units; the test data of each virtual controlled power generation unit are compared with the test data of the actual controlled power generation units; the target simulation controller parameters of multiple virtual controlled power generation units in the new energy power station are determined based on the comparison results; and the target simulation controller parameters are used as the control parameters of the physical controllers of the associated virtual controlled power generation units.

[0187] This invention establishes a simulation modeling platform that connects the virtual model of a new energy power station with the physical equipment, and conducts low-voltage ride-through simulation tests. Based on the simulation test structure, the controller parameters of the power generation units are adjusted to obtain the control parameters of the physical controllers of multiple virtual power generation units in the new energy power station under real-world operating conditions. This ensures the stable operation of the new energy power station during low-voltage ride-through faults and solves the technical problem of how to determine the controller parameters of the physical controllers of the power generation units in a new energy power station to improve the operational stability of the new energy power station.

[0188] Please see Figure 9 , Figure 9 This is a structural block diagram of a real-time simulation test modeling system for a new energy power station provided in Embodiment 3 of the present invention.

[0189] This invention provides a real-time simulation test modeling system for new energy power plants, comprising:

[0190] The response module 301 is used to respond to the simulation modeling request for the new energy power station and to build a simulation modeling platform for the new energy power station.

[0191] Simulation module 302 is used to perform low voltage ride-through simulation on the simulation modeling platform and obtain test data of the power generation unit of the new energy power station. The test data of the power generation unit includes test data of the actual controlled power generation unit and test data of multiple virtual controlled power generation units.

[0192] The comparison module 303 is used to compare the test data of each virtual control power generation unit with the test data of the actual control power generation unit.

[0193] Data processing module 304 is used to determine the target simulation controller parameters of multiple virtual control power generation units in the new energy power station based on the comparison results;

[0194] The data output module 305 is used to use the target simulation controller parameters as control parameters for the physical controller of the associated virtual power generation unit.

[0195] Furthermore, the new energy power station includes grid connection, monitoring equipment, communication interface equipment, multiple power generation units, and multiple physical controllers connected to the power generation units. The response module 301 includes:

[0196] The power generation unit determination submodule is used to respond to the simulation modeling request for the new energy power station, and arbitrarily select one power generation unit from multiple power generation units as the actual controlled power generation unit, and the remaining power generation units as virtual controlled power generation units.

[0197] The target controller submodule is used to use the physical controller connected to the actual power generation unit as the target controller.

[0198] The model building submodule is used to build an equivalent power grid model connected to the power grid, a real-controlled main circuit model of the real-controlled power generation unit, and virtual-controlled main circuit models and simulation controller models of multiple virtual-controlled power generation units through a real-time simulator. The virtual-controlled main circuit models and simulation controller models are connected in a one-to-one correspondence.

[0199] The coupling submodule is used to couple and connect the monitoring device, communication interface device, target controller and real-time simulator to build a simulation modeling platform for new energy power plants.

[0200] Furthermore, the coupling submodule includes:

[0201] The first connection unit is used to connect the actual control main circuit model and multiple virtual control main circuit models with the equivalent power grid model;

[0202] The second connection unit is used to connect the target controller and the actual control main loop model through a communication interface device.

[0203] The third connection unit is used to connect the monitoring device to the target controller;

[0204] The fourth connection unit is used to connect multiple simulation controller models to the monitoring device through communication interface devices to build a simulation modeling platform for new energy power plants.

[0205] Furthermore, the test data of the power generation unit includes the effective value waveform of the grid connection point voltage, the active power waveform of the power generation unit, and the reactive power waveform of the power generation unit.

[0206] Furthermore, the data processing module 304 includes:

[0207] The first comparison result processing submodule is used to take the controller parameters associated with the actual power generation unit as the target simulation controller parameters of the virtual power generation unit when the test data of the virtual power generation unit matches the test data of the actual power generation unit.

[0208] The second comparison result processing submodule is used to adjust the initial simulation controller parameters of the virtual control power generation unit when the test data of the virtual control power generation unit is inconsistent with the test data of the actual control power generation unit, until the preset adjustment conditions are met, and then output the target simulation controller parameters.

[0209] Furthermore, the initial simulation controller parameters include the reactive power support coefficient, reactive current recovery rate, active current recovery rate, and current inner loop coefficient; the target simulation controller parameters include the first-stage target simulation controller parameters and the second-stage target simulation controller parameters; and the second comparison result processing submodule includes:

[0210] The first adjustment unit is used to adjust the reactive power support coefficient of the virtual control power generation unit until the reactive power of the virtual control power generation unit in the preset first stage under low voltage ride-through simulation is consistent with that of the actual control power generation unit. Then, the reactive power support coefficient at the current moment is used as the target simulation controller parameter for the first stage.

[0211] The first current reference value unit is used to determine the first current reference value based on the reactive power support coefficient at the current moment.

[0212] The second adjustment unit is used to adjust the virtual dq axis voltage of the first stage by adjusting the current inner loop coefficient of the virtual control power generation unit based on the first current reference value. When the first stage dq axis voltage is consistent with the first stage actual control dq axis voltage of the actual control power generation unit, the current inner loop coefficient at the current moment is used as the target simulation controller parameter of the first stage.

[0213] The third adjustment unit is used to adjust the reactive current recovery rate and active current recovery rate of the virtual control power generation unit until the reactive power recovery rate of the virtual control power generation unit and the actual control power generation unit in the preset second stage under the low voltage ride-through simulation are consistent, and the active power recovery rate of the virtual control power generation unit and the actual control power generation unit are consistent. Then, the reactive current recovery rate and active current recovery rate at the current moment are used as the target simulation controller parameters for the second stage.

[0214] The second current reference value unit is used to determine the second current reference value based on the current reactive current recovery rate and the current active current recovery rate.

[0215] The fourth adjustment unit is used to adjust the second-stage virtual control dq-axis voltage by adjusting the current inner loop coefficient of the virtual control generator unit based on the second current reference value. When the second-stage dq-axis voltage is consistent with the second-stage real control dq-axis voltage of the real control generator unit, the current inner loop coefficient at the current moment is used as the second-stage target simulation controller parameter.

[0216] In this invention, in response to a request for simulation modeling of a new energy power station, a simulation modeling platform for the new energy power station is built; low-voltage ride-through simulation is performed on the simulation modeling platform to obtain test data of the power generation units of the new energy power station, including test data of the actual controlled power generation units and test data of multiple virtual controlled power generation units; the test data of each virtual controlled power generation unit are compared with the test data of the actual controlled power generation units; the target simulation controller parameters of multiple virtual controlled power generation units in the new energy power station are determined based on the comparison results; and the target simulation controller parameters are used as the control parameters of the physical controllers of the associated virtual controlled power generation units.

[0217] This invention establishes a simulation modeling platform that connects the virtual model of a new energy power station with the physical equipment, and conducts low-voltage ride-through simulation tests. Based on the simulation test structure, the controller parameters of the power generation units are adjusted to obtain the control parameters of the physical controllers of multiple virtual power generation units in the new energy power station under real-world operating conditions. This ensures the stable operation of the new energy power station during low-voltage ride-through faults and solves the technical problem of how to determine the controller parameters of the physical controllers of the power generation units in a new energy power station to improve the operational stability of the new energy power station.

[0218] Please see Figure 10 , Figure 10 This is a structural block diagram of a computer device provided in Embodiment 4 of the present invention.

[0219] An electronic device according to an embodiment of the present invention includes: a memory 401 and a processor 402. The memory 402 stores a computer program. When the computer program is executed by the processor 402, the processor 402 executes the real-time simulation test modeling method for new energy power stations as described in any of the above embodiments.

[0220] Memory 401 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), EPROM, hard disk, or ROM. Memory 401 has storage space 403 for program code 413 for performing any of the method steps described above. For example, storage space 403 for program code may include individual program codes 413 for implementing the various steps in the methods described above. This program code may be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, CDs, memory cards, or floppy disks. The program code may be compressed, for example, in a suitable form. When run by a computing processing device, this code causes the computing processing device to perform the various steps in the methods described above. This program code may be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, CDs, memory cards, or floppy disks. The program code may be compressed, for example, in a suitable form. When this code is run by a computing device, it causes the computing device to perform the various steps in the real-time simulation test modeling method for new energy power plants described above.

[0221] Embodiment 5 of the present invention also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the real-time simulation test modeling method for new energy power stations as described in any of the above embodiments.

[0222] Embodiment 6 of the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer executes the real-time simulation test modeling method for new energy power stations as described in any of the above embodiments.

[0223] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0224] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0225] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0226] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0227] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0228] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A real-time simulation test modeling method for new energy power stations, characterized in that, include: In response to the request for simulation modeling of the new energy power station, a simulation modeling platform for the new energy power station is built; Low voltage ride-through simulation is performed on the simulation modeling platform to obtain test data of the power generation unit of the new energy power station. The test data of the power generation unit includes test data of the actual controlled power generation unit and test data of multiple virtual controlled power generation units. The test data of each virtual power generation unit were compared with the test data of the actual power generation unit. Based on the comparison results, the target simulation controller parameters of multiple virtual control power generation units in the new energy power station are determined. The step of determining the target simulation controller parameters for multiple virtual power generation units within the new energy power station based on the comparison results includes: When the test data of the virtual power generation unit is consistent with the test data of the actual power generation unit, the controller parameters associated with the actual power generation unit are used as the target simulation controller parameters of the virtual power generation unit. If the test data of the virtual power generation unit is inconsistent with the test data of the actual power generation unit, the initial simulation controller parameters of the virtual power generation unit are adjusted until the preset adjustment conditions are met, and the target simulation controller parameters are output. The initial simulation controller parameters include the reactive power support coefficient, reactive current recovery rate, active current recovery rate, and current inner loop coefficient. The target simulation controller parameters include the first-stage target simulation controller parameters and the second-stage target simulation controller parameters. Adjusting the initial simulation controller parameters of the virtual control generator unit until the preset adjustment conditions are met, and then outputting the target simulation controller parameters, includes: Adjust the reactive power support coefficient of the virtual power generation unit until the reactive power of the virtual power generation unit and the actual power generation unit in the preset first stage of the low voltage ride-through simulation are consistent. Then, use the reactive power support coefficient at the current moment as the target simulation controller parameter for the first stage. The first current reference value is determined based on the reactive power support coefficient at the current moment; Based on the first current reference value, the virtual control dq axis voltage of the first stage is adjusted by adjusting the current inner loop coefficient of the virtual control power generation unit. When the first stage dq axis voltage is consistent with the first stage real control dq axis voltage of the real control power generation unit, the current inner loop coefficient at the current moment is used as the target simulation controller parameter of the first stage. The target simulation controller parameters are used as the control parameters of the physical controller of the associated virtual power generation unit.

2. The real-time simulation test modeling method for new energy power stations according to claim 1, characterized in that, The new energy power station includes grid connection, monitoring device, communication interface device, multiple power generation units and multiple physical controllers connected to the power generation units. The response to the simulation modeling request of the new energy power station establishes a simulation modeling platform for the new energy power station. In response to the simulation modeling request for the new energy power station, one power generation unit is randomly selected from the multiple power generation units as the actual controlled power generation unit, and the remaining power generation units are used as virtual controlled power generation units. The physical controller connected to the actual control power generation unit is used as the target controller; An equivalent grid model for the grid connection, a real-controlled main circuit model for the actual controlled power generation unit, and virtual controlled main circuit models and simulation controller models for multiple virtual controlled power generation units are constructed using a real-time simulator. The virtual controlled main circuit models and simulation controller models are connected in a one-to-one correspondence. The monitoring device, the communication interface device, the target controller, and the real-time simulator are coupled and connected to build a simulation modeling platform for the new energy power station.

3. The real-time simulation test modeling method for new energy power stations according to claim 2, characterized in that, The step of coupling and connecting the monitoring device, the communication interface device, the target controller, and the real-time simulator to build a simulation modeling platform for the new energy power station includes: Connect the actual controlled main circuit model and the multiple virtual controlled main circuit models to the equivalent power grid model; The target controller is connected to the actual control main loop model through the communication interface device; Connect the monitoring device to the target controller; Multiple simulation controller models are connected to the monitoring device through the communication interface device to build a simulation modeling platform for the new energy power station.

4. The real-time simulation test modeling method for new energy power stations according to claim 1, characterized in that, The test data of the power generation unit includes the effective value waveform of the grid connection point voltage, the active power waveform of the power generation unit, and the reactive power waveform of the power generation unit.

5. The real-time simulation test modeling method for new energy power stations according to claim 1, characterized in that, The process of adjusting the initial simulation controller parameters of the virtual control power generation unit until the preset adjustment conditions are met, and then outputting the target simulation controller parameters, further includes: Adjust the reactive current recovery rate and the active current recovery rate of the virtual power generation unit until the reactive power recovery rate of the virtual power generation unit and the active power recovery rate of the actual power generation unit are consistent in the preset second stage under low voltage ride-through simulation. Then, the reactive current recovery rate and the active current recovery rate at the current moment are used as the target simulation controller parameters for the second stage. The second current reference value is determined based on the current reactive current recovery rate and the current active current recovery rate. Based on the second current reference value, the second-stage virtual control dq-axis voltage is adjusted by adjusting the current inner loop coefficient of the virtual control power generation unit. When the second-stage dq-axis voltage is consistent with the second-stage real control dq-axis voltage of the real control power generation unit, the current inner loop coefficient at the current moment is used as the second-stage target simulation controller parameter.

6. A real-time simulation test modeling system for new energy power stations, characterized in that, The real-time simulation test modeling system for the new energy power station is used to implement the real-time simulation test modeling method for the new energy power station as described in any one of claims 1-5. The real-time simulation test modeling system for the new energy power station includes: The response module is used to respond to simulation modeling requests for new energy power plants and to build a simulation modeling platform for the new energy power plants. The simulation module is used to perform low-voltage ride-through simulation on the simulation modeling platform and obtain the test data of the power generation unit of the new energy power station. The test data of the power generation unit includes the test data of the actual controlled power generation unit and the test data of multiple virtual controlled power generation units. The comparison module is used to compare the test data of each virtual power generation unit with the test data of the actual power generation unit. The data processing module is used to determine the target simulation controller parameters of multiple virtual control power generation units in the new energy power station based on the comparison results; The data output module is used to use the target simulation controller parameters as control parameters for the physical controller of the associated virtual power generation unit.

7. An electronic device, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the real-time simulation test modeling method for new energy power stations as described in any one of claims 1-5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed, it implements the real-time simulation test modeling method for new energy power stations as described in any one of claims 1-5.

9. A computer program product, characterized in that, The computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, wherein when the program instructions are executed by a computer, the computer performs the real-time simulation test modeling method for new energy power stations as described in any one of claims 1-5.

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