A new energy station simulation machine modeling method

Abstract

This invention discloses a modeling method for a new energy power plant simulator, relating to the field of power system simulation technology. Specifically, it includes the following steps: S1, developing and debugging a digital encapsulation model using ADPSS software on both the Windows and Linux platforms; S2, based on the established digital encapsulation model, connecting the new energy controller hardware to the simulator equipment within a simulation environment, and conducting relevant simulation modeling work; S3, obtaining the primary circuit topology and parameters of the new energy unit or SVG, and establishing a primary circuit model based on the primary circuit topology and parameters using the ADPSS simulation platform. The new energy power plant simulator modeling method provided by this invention only requires modeling, simulation, and debugging on one ADPSS simulation platform. Theoretically, all other platforms can be directly accessed by the platform user using the ADPSS-tested control encapsulation model, without requiring participation in model development, greatly reducing workload and complexity.

Description

Technical Field

[0001] This invention relates to the field of power system simulation, specifically to a modeling method for a new energy power plant simulator. Background Technology

[0002] New energy power stations refer to power facilities that aggregate wind power, photovoltaic and other new energy power generation facilities connected to the power system and are connected to the power grid through equipment below the grid connection point. These facilities include transformers, busbars, lines, converters, energy storage devices, reactive power regulation equipment, wind turbines, photovoltaic power generation equipment and auxiliary equipment. The access voltage level is determined according to the installed capacity. Power stations with a capacity of less than 30 MW should use a voltage of less than 110 kV, while those with a capacity of more than 200 MW should use 220 kV access and be equipped with an energy storage system to meet the frequency regulation and voltage regulation requirements.

[0003] In recent years, with the increasing demand for new energy power plants, in order to pre-assess the risks of safe and stable operation of new energy power plants, ensure the normal operation of new energy power plants, and improve construction efficiency, existing technologies disclose the use of simulation technology to digitally model and simulate new energy power plants. However, in actual operation, in order to meet the needs of different simulation platforms, such as PSCAD, ADPSS, HYPERSIM, and RTLAB, digital encapsulation models of new energy equipment must be provided, which faces significant technical hurdles, such as long cycles and high difficulty. Secondly, in terms of the use of specific simulation equipment, there is also a lack of flexibility in relocation and adaptation to different field environments. Therefore, considering the problems existing in the above-mentioned technologies, the applicant will provide a new energy power plant simulator modeling method to solve these problems. Summary of the Invention

[0004] This application proposes a modeling method for a new energy power plant simulator, which solves the technical problems mentioned in the background.

[0005] To achieve the above objectives, this application adopts the following technical solution: a modeling method for a new energy power station simulator, specifically including the following steps:

[0006] S1. Develop and debug digital packaging models using ADPSS software on the Windows platform and ADPSS software on the Linux platform. S2. Based on the establishment of the digital packaging model, and in accordance with the simulation environment, the new energy controller hardware is connected to the simulation machine equipment to carry out relevant simulation modeling work. S3. Obtain the primary circuit topology and parameters of the new energy unit or SVG and establish a primary circuit model based on the primary circuit topology and parameters through the ADPSS simulation platform; S4. Obtain the interface signal table, which includes the interface number, pin number, signal name, signal type, level range, and signal ratio. Modify the controller's hardware and software configuration according to the ADPSS interface requirements. S5. Debug the model using the actual controller in conjunction with the ADPSS simulation platform; S6. Conduct characteristic tests of new energy unit models on the ADPSS simulation platform, including steady-state operating condition tests and fault ride-through characteristic tests.

[0007] Preferably, the development of the digital encapsulation model for ADPSS software on the Windows platform includes Windows "unified interface" technology training, Windows development of the "unified interface" for the digital control model, and primary system modeling; Debugging the digital encapsulation model of the ADPSS software on the Windows platform includes testing and troubleshooting of the digital encapsulation model on the Windows platform, detailed dynamic characteristic comparison testing of the digital encapsulation model, multi-instance operation capability testing, and grid access capability testing with different short-circuit ratios.

[0008] Preferably, the development of the digital packaging model of the ADPSS software on the Linux platform includes Linux "unified interface" technology training and Linux packaging of the "unified interface" of the digital control model; the debugging of the digital packaging model of the ADPSS software on the Linux platform includes Linux digital packaging model debugging, Linux platform digital packaging model testing and defect elimination, and Linux and Windows comparison testing.

[0009] Preferably, the library files used in the digital packaging model cannot use a common naming convention. They must be strongly associated with the new energy model equipment, be able to connect to power grids with different short-circuit ratios, and pass testing.

[0010] A testing method for a digital packaging model, comprising the following steps: S1, Steady-state test Functional tests were conducted on wind turbines and photovoltaic systems, including unlocking / locking, power increase / decrease, power step, and control mode switching. S2, Detailed Dynamic Characteristics Comparison Test Wind turbines and photovoltaic systems shall be tested according to the test standards of GBT-36995 or GBT-32892, including eight tests: high power +20% three-phase drop, high power +130% three-phase rise, high power +20% two-phase drop and high power +130% two-phase rise, low power +20% three-phase drop, low power +130% three-phase rise, low power +20% two-phase drop and low power +130% two-phase rise. Detailed waveform comparisons shall be made of the instantaneous values ​​of voltage and current on the high-voltage side of the transformer, voltage and current on the low-voltage side of the transformer, instantaneous values ​​of DC bus voltage, and control and protection status. S3 Multi-Instance Operation Capability Test Based on the digital encapsulation model, two single-machine cases are constructed, one with a fault and the other without a fault. A dual-machine case is then constructed, which is completed in one step by importing the single-machine case through a computational example. There is no connection between the two machines. One machine is set to be faulty and the other is not faulty. Run three cases: two single-machine cases and one dual-machine case. In the result verification, the simulation results of each machine in the dual-machine simulation must be completely consistent with the simulation results of the corresponding single-machine example. S4. Testing the grid connection capability of different short-circuit ratios Based on the rated capacity of the unit, five typical short-circuit ratios were tested, including 1.8, 2.5, 4, 10, and 20. The short-circuit capacity was then tested based on the short-circuit ratio. Different short-circuit ratios were simulated according to the ideal power supply plus RL branch mode (X=U^2 / Prate / MSCR, R=X / 10). Eight tests were conducted according to the test standards of GBT-36995 or GBT-32892, including high power +20% three-phase drop, high power +130% three-phase rise, high power +20% two-phase drop, high power +130% two-phase rise, low power +130% three-phase rise, low power +20% two-phase drop, and low power +130% two-phase rise, to verify functionality. Comparison test of S5, Linux and Windows Wind turbines and photovoltaic systems shall be subjected to eight tests in accordance with the test standards of GBT-36995 or GBT-32892: high power +20% three-phase drop, high power +130% three-phase rise, high power +20% two-phase drop, high power +130% two-phase rise, low power +20% three-phase drop, low power +130% three-phase rise, low power +20% two-phase drop, and low power +130% two-phase rise. Detailed waveform comparisons shall be made of the instantaneous values ​​of voltage and current on the high-voltage side of the transformer, voltage and current on the low-voltage side of the transformer, instantaneous values ​​of DC bus voltage, and control and protection status.

[0011] A simulator device includes a mobile platform and a container loaded and moved by the mobile platform. The container houses the simulator device, a display and control platform, and a seat. Adjustable panels are hinged to the front and rear ends of the container via pins. An installation space is provided inside one side of the container, and a bidirectional transmission mechanism is installed within the installation space. The output structure inside the bidirectional transmission mechanism can drive the pins inside the two adjustable panels, causing the two adjustable panels to automatically flip to make room or flip to close the internal space of the container. The bidirectional transmission mechanism includes a first gear and an electric push rod. The middle of the first gear is fitted with a support shaft fixed to the inner wall of one side of the installation space via a bearing. The top and bottom of the first gear are meshed with composite straight tooth plates that slide on the inner wall of one side of the installation space. The bottom of each composite straight tooth plate is connected to a linkage tooth plate. One end of each of the two linkage tooth plates is meshed with a second gear. The middle parts of the two second gears are respectively connected to the corresponding ends of the internal pins of the two adjustment boxes. The output end of the electric push rod is connected to the middle part of one of the composite straight tooth plates.

[0012] Preferably, the simulator equipment includes an industrial cabinet, and the industrial cabinet houses a server, a real-time simulator, network equipment, an I / O chassis, and a power supply unit. One side of each of the two composite straight tooth plates is engaged with a guide rail fixed to the inner wall of the installation space, and a clearance is provided between the two composite straight tooth plates and the inner wall of the installation space. A support seat is installed between the housing surface of the electric push rod and the inner wall of the installation space.

[0013] Preferably, a through-shaped groove is provided on one side wall of the installation space, and a transmission bracket is engaged in the front and rear ends of the groove. One side of each of the two transmission brackets extends into the interior of the container and is connected to an elastic buffer component. The two elastic buffer components can provide elastic clamping and buffering for the simulator equipment. The elastic buffer assembly includes a damping rubber plate, on the surface of which a plurality of guide rods are arranged and installed, and one end of each guide rod penetrates the side structure of the corresponding transmission bracket and extends to the outside of the transmission bracket. A plurality of buffer springs are installed between the damping rubber plate and the surface of the corresponding transmission bracket. The damping rubber plate has through-shaped assembly grooves at both the top and bottom, and a damping rubber cylinder that can contact and rub against the surface of the simulator equipment is installed inside the assembly groove.

[0014] Preferably, a photovoltaic controller is installed inside the industrial cabinet, and photovoltaic panels are nested on the structural surfaces of the two adjustable boxes facing the internal space of the container after being flipped over. The photovoltaic controller is electrically connected to the photovoltaic panels and the power supply device through wires. Several baffles are arranged on the structural surface of the two adjustable box plates facing the internal space of the container after they are flipped over. Fasteners are provided on the top of the front and rear ends of the container. Limiting grooves are opened in the top structure of the two adjustable box plates after they are flipped over. The fasteners include screws and nuts fixed on the inner wall of the top of the container. The screws can be movably sleeved with the limiting grooves and then threadedly connected with the nuts to lock and limit the adjustable box plates and the container. A cooling fan is installed on one side of the top of the container, and a ventilation assembly is provided on the top of the cooling fan. The ventilation assembly includes an inner support cylinder, an outer support cylinder, and an arc-shaped cover plate. The bottom of the inner support cylinder is fixed to the top of the container, the outer support cylinder is fitted on the outside of the bottom of the inner support cylinder, the arc-shaped cover plate is fixed to the top of the inner support cylinder, and the top structure of the inner support cylinder has ventilation slots.

[0015] The present invention has the following beneficial effects: 1. The new energy power station simulator modeling method provided by this invention only requires modeling, simulation and debugging on one ADPSS simulation platform. In theory, all other platforms can be directly called by the platform user using the control encapsulation model tested by ADPSS, without the need to participate in model development, which greatly reduces the workload and complexity.

[0016] 2. This invention forms a multifunctional simulator by setting up a container, simulator equipment, display and control platform, two adjustable boxes, and a bidirectional transmission mechanism. After being used in conjunction with a mobile platform, it can meet the needs of on-site construction testing in different environments under the flexible transportation of the mobile platform. Furthermore, during use, the bidirectional transmission mechanism can drive the two adjustable boxes to automatically rotate and make room or cover the internal space of the container, which not only facilitates the operation of the display and control platform and simulator equipment for the operator to enter and exit the container, but also ensures the safety of the simulator equipment during transportation.

[0017] 3. The present invention forms a linkage buffer structure by setting two transmission brackets and two elastic buffer components. Subsequently, without interfering with the reciprocating transmission operation of the bidirectional transmission mechanism, the kinetic energy of the resetting transmission of the bidirectional transmission mechanism can be used to drive the two transmission brackets to drive their respective elastic buffer components to elastically clamp and buffer the simulator equipment, thereby reducing the vibration and impact suffered by the simulator equipment during transportation.

[0018] 4. By using photovoltaic panels and fasteners to further expand the usage conditions, this invention can provide additional power supply to the simulator equipment under the structural support of the adjustable box plate and reinforce and lock the adjustable box plate in the covered closed container, thereby further optimizing the overall use effect of the equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention; Figure 2 This is a front view schematic diagram of the structure of the present invention; Figure 3 This is a top view of the structure of the present invention; Figure 4 This is a bottom view of the container in the structure of the present invention; Figure 5This is a right-side schematic diagram of the bidirectional transmission mechanism in the structure of the present invention; Figure 6 This is a rear view schematic diagram of the simulator equipment in the structure of this invention; Figure 7 This is an enlarged schematic diagram of the elastic buffer component in the structure of the present invention; Figure 8 This is a cross-sectional schematic diagram of the ventilation component in the structure of the present invention.

[0020] In the diagram: 1. Mobile platform; 2. Container; 3. Simulation equipment; 4. Display and control platform; 5. Seat; 6. Adjustable panel; 7. First gear; 8. Composite spur gear plate; 9. Electric push rod; 10. Linkage gear plate; 11. Second gear; 12. Guide rail; 13. Slide groove; 14. Transmission bracket; 15. Elastic buffer assembly; 151. Damping rubber plate; 152. Guide rod; 153. Buffer spring; 154. Damping rubber cylinder; 16. Photovoltaic panel; 17. Baffle; 18. Limiting groove; 19. Fastener; 20. Ventilation assembly; 201. Inner support cylinder; 202. Outer support cylinder; 203. Arc-shaped cover plate; 21. Cooling fan. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to preferred embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] A method for modeling a new energy power plant simulator includes the following steps: S1. Develop and debug digital packaging models using ADPSS software on the Windows platform and ADPSS software on the Linux platform. The development of the digital encapsulation model of the ADPSS software on the Windows platform includes Windows "unified interface" technology training, Windows development of the "unified interface" of the digital control model, and primary system modeling. The debugging of the digital encapsulation model of the ADPSS software on the Windows platform includes testing and troubleshooting of the digital encapsulation model on the Windows platform, detailed dynamic characteristic comparison test of the digital encapsulation model, multi-instance operation capability test, and grid access capability test with different short-circuit ratios. The development of the digital packaging model for ADPSS software on the Linux platform includes training on Linux "unified interface" technology and Linux packaging of the "unified interface" for the digital control model; the debugging of the digital packaging model for ADPSS software on the Linux platform includes debugging of the Linux digital packaging model, testing and troubleshooting of the digital packaging model on the Linux platform, and comparison testing between Linux and Windows. On both the Windows and Linux ADPSS simulation platforms, a complete electromagnetic transient model of new energy, including primary and secondary circuits, is established. The library files used in the digital packaging model cannot use a common naming convention; they must be strongly associated with the new energy model equipment, be able to connect to power grids with different short-circuit ratios, and pass testing. S2. Based on the establishment of the digital packaging model, and in accordance with the simulation environment, the new energy controller hardware is connected to the simulation machine equipment to carry out relevant simulation modeling work. S3. Obtain the primary circuit topology and parameters of the new energy unit or SVG and establish a primary circuit model based on the primary circuit topology and parameters through the ADPSS simulation platform; Among them, SVG represents Static Var Generator and ADPSS represents Power System Fully Digital Simulation Device; S4. Obtain the interface signal table, which includes the interface number, pin number, signal name, signal type, level range, and signal ratio. Modify the controller's hardware and software configuration according to the ADPSS interface requirements. S5. Debug the model using the actual controller in conjunction with the ADPSS simulation platform; S6. Conduct characteristic tests of new energy unit models on the ADPSS simulation platform, including steady-state operating condition tests and fault ride-through characteristic tests.

[0023] In summary, the new energy power station simulator modeling method provided in this application only requires modeling, simulation and debugging on one ADPSS simulation platform. Theoretically, all other platforms can be directly accessed by the platform user using the control encapsulation model tested by ADPSS, without the need to participate in model development, which greatly reduces workload and complexity.

[0024] A testing method for a digital packaging model, comprising the following steps: S1, Steady-state test Functional tests were conducted on wind turbines and photovoltaic systems, including unlocking / locking, power increase / decrease, power step, and control mode switching. S2, Detailed Dynamic Characteristics Comparison Test Wind turbines and photovoltaic systems shall be tested according to the test standards of GBT-36995 or GBT-32892, including eight tests: high power +20% three-phase drop, high power +130% three-phase rise, high power +20% two-phase drop and high power +130% two-phase rise, low power +20% three-phase drop, low power +130% three-phase rise, low power +20% two-phase drop and low power +130% two-phase rise. Detailed waveform comparisons shall be made of the instantaneous values ​​of voltage and current on the high-voltage side of the transformer, voltage and current on the low-voltage side of the transformer, instantaneous values ​​of DC bus voltage, and control and protection status. S3 Multi-Instance Operation Capability Test Based on the digital encapsulation model, two single-machine cases are constructed, one with a fault and the other without a fault. A dual-machine case is then constructed, which is completed in one step by importing the single-machine case through a computational example. There is no connection between the two machines. One machine is set to be faulty and the other is not faulty. Run three cases: two single-machine cases and one dual-machine case. In the result verification, the simulation results of each machine in the dual-machine simulation must be completely consistent with the simulation results of the corresponding single-machine example. S4. Testing the grid connection capability of different short-circuit ratios Based on the rated capacity of the unit, five typical short-circuit ratios were tested, including 1.8, 2.5, 4, 10, and 20. The short-circuit capacity was then tested based on the short-circuit ratio. Different short-circuit ratios were simulated according to the ideal power supply plus RL branch mode (X=U^2 / Prate / MSCR, R=X / 10). Eight tests were conducted according to the test standards of GBT-36995 or GBT-32892, including high power +20% three-phase drop, high power +130% three-phase rise, high power +20% two-phase drop, high power +130% two-phase rise, low power +130% three-phase rise, low power +20% two-phase drop, and low power +130% two-phase rise, to verify functionality. Comparison test of S5, Linux and Windows Wind turbines and photovoltaic systems shall be subjected to eight tests in accordance with the test standards of GBT-36995 or GBT-32892: high power +20% three-phase drop, high power +130% three-phase rise, high power +20% two-phase drop, high power +130% two-phase rise, low power +20% three-phase drop, low power +130% three-phase rise, low power +20% two-phase drop, and low power +130% two-phase rise. Detailed waveform comparisons shall be made of the instantaneous values ​​of voltage and current on the high-voltage side of the transformer, voltage and current on the low-voltage side of the transformer, instantaneous values ​​of DC bus voltage, and control and protection status.

[0025] like Figures 1-6A simulation machine device includes a mobile platform 1 and a container 2 loaded and moved by the mobile platform 1. The container 2 contains a simulation machine device 3, a display and control platform 4, and a seat 5. The simulation machine device 3 includes an industrial cabinet, which contains a server, a real-time simulator, network equipment, an I / O chassis, and a power supply. Adjustable box plates 6 are hinged to the front and rear ends of the container 2 via pins. An installation space is provided inside one side of the container 2, and a bidirectional transmission mechanism is installed in the installation space. The output structure inside the bidirectional transmission mechanism can drive the pins inside the two adjustable box plates 6, so that the two adjustable box plates 6 can automatically flip to make room or flip to close the internal space of the container 2, thereby providing convenient conditions for the operator to enter and exit the container 2. The bidirectional transmission mechanism includes a first gear 7 and an electric push rod 9. The middle part of the first gear 7 is fitted with a support shaft fixed to the inner wall of one side of the installation space via a bearing, ensuring the stable output of the first gear 7 in the subsequent rotation. The top and bottom of the first gear 7 are meshed and connected to a composite straight tooth plate 8 that slides on the inner wall of one side of the installation space. The bottom of the composite straight tooth plate 8 is connected to a linkage tooth plate 10. One end of each of the two linkage tooth plates 10 is meshed and connected to a second gear 11. The middle parts of the two second gears 11 are respectively connected to the corresponding ends of the internal pins of the two adjustment box plates 6. The output end of the electric push rod 9 is connected to the middle part of one of the composite straight tooth plates 8, thereby meeting the power requirements for automatic output of the bidirectional transmission mechanism. One side of each of the two composite straight tooth plates 8 is clamped with a guide rail 12 fixed to the inner wall of the installation space. The guide rail 12 provides auxiliary support and anti-deviation protection for the composite straight tooth plates 8 that need to move back and forth. A clearance is provided between the two composite straight tooth plates 8 and the inner wall of the installation space to avoid structural interference and reduce friction during the reciprocating displacement transmission of the composite straight tooth plates 8. A support seat is installed between the housing surface of the electric push rod 9 and the inner wall of the installation space to ensure the stability and reliability of the electric push rod 9 during use.

[0026] When in use, considering the on-site operation requirements in the simulation process of new energy power stations, existing trucks are used as mobile platforms 1 and loaded with containers 2, simulation equipment 3, display and control platforms 4 and other structures to be transported to the designated site; After the mobile platform 1 comes to a stop, the electric push rod 9 is activated. The output end of the electric push rod 9 drives the corresponding compound spur gear 8 to perform automatic linear displacement. At the same time, the first gear 7 will mesh with the compound spur gear 8 in the displacement state and simultaneously mesh with the other compound spur gear 8. This causes the two compound spur gears 8 to drive their respective connected linkage gear plates 10 to move away from each other. Subsequently, the two linkage gear plates 10 respectively drive their corresponding second gears 11, causing the two second gears 11 to drive their respective corresponding pins and adjusting box plates 6 to rotate and move out of position synchronously until the original top structure of the two adjusting box plates 6 contacts the ground and cooperates with the mobile platform 1 to form a triangular support, thereby providing convenient conditions for subsequent personnel to enter the container 2 and walk inside. After the two adjustable panels 6 tilt and move the container 2, the staff can enter the container 2 through any of the tilted adjustable panels 6. Then, the simulation equipment formed by the display control platform 4 and the simulation equipment 3 is connected to the new energy controller hardware, and the simulation test is carried out according to the new energy station simulation modeling method described above.

[0027] like Figures 3-7 A through-type slide groove 13 is provided on one side wall of the installation space, and a transmission bracket 14 is engaged in the front and rear ends of the slide groove 13. One side of each of the two transmission brackets 14 extends into the interior of the container 2 and is connected to an elastic buffer component 15. The two elastic buffer components 15 can elastically clamp and buffer the simulator equipment 3, reducing the vibration and impact suffered by the simulator equipment 3 during turnover and transportation. The elastic buffer assembly 15 includes a damping rubber plate 151. Several guide rods 152 are arranged on the surface of the damping rubber plate 151, and one end of each guide rod 152 passes through the side structure of the corresponding transmission bracket 14 and extends to the outside of the transmission bracket 14. Several buffer springs 153 are installed between the damping rubber plate 151 and the surface of the corresponding transmission bracket 14. The damping rubber plate 151 and the multiple buffer springs 153 work together to dampen and buffer the simulator equipment 3. The top and bottom of the damping rubber plate 151 are provided with through-shaped assembly grooves, and a damping rubber cylinder 154 that can contact and rub against the surface of the simulator equipment 3 is installed in the assembly groove. The damping rubber cylinder 154 that can roll and rub dissipates the large vibration energy suffered by the simulator equipment 3 through friction.

[0028] During use, when the simulator equipment 3 is inside the container 2 and being transported by the mobile platform 1, the electric push rod 9 will be in the closed state. The two transmission brackets 14, driven by their respective composite straight tooth plates 8, will drive their respective elastic buffer components 15 to elastically clamp the simulator equipment 3. Subsequently, when the simulator equipment 3 is subjected to transport vibration, the damping rubber plate 151 and multiple buffer springs 153 will work together to elastically clamp and buffer the simulator equipment 3, reducing the vibration impact suffered by the simulator equipment 3 during the turnover and transport process. At the same time, the damping rubber cylinder 154, which receives the vibration energy synchronously, will roll and rub against the surface of the simulator equipment 3 to dissipate the friction energy, further improving the buffering effect of the simulator equipment 3.

[0029] like Figures 3-8 The industrial cabinet is equipped with a photovoltaic controller. Two adjustable box plates 6 are flipped up and face the internal space of the container 2. Photovoltaic panels 16 are nested on the structural surface. The photovoltaic controller is electrically connected to the photovoltaic panels 16 and the power supply device through wires, thereby providing additional conditions for power supplementation of the whole equipment and further optimizing the use effect of the whole equipment. A cooling fan 21 is installed on one side of the top of container 2, and a ventilation component 20 is provided on the top of the cooling fan 21. The ventilation component 20 includes an inner support cylinder 201, an outer support cylinder 202, and an arc-shaped cover plate 203. The bottom of the inner support cylinder 201 is fixed to the top of container 2, the outer support cylinder 202 is fitted on the outside of the bottom of the inner support cylinder 201, the arc-shaped cover plate 203 is fixed to the top of the inner support cylinder 201, and the top structure of the inner support cylinder 201 is provided with ventilation slots.

[0030] In use, considering the flexible replenishment of equipment power, the multiple photovoltaic panels 16 are supported by two adjustable box plates 6. After the two adjustable box plates 6 are flipped and adjusted to fully make way for the internal space of the container 2, the multiple photovoltaic panels 16 will be exposed to the use environment and then generate electricity using solar energy. To meet the ventilation and heat dissipation needs inside container 2, the cooling fan 21 is turned on. The rotating output of the cooling fan 21 accelerates the rapid circulation of air inside container 2 with the air in the usage environment, thereby achieving the ventilation and heat dissipation effect. When encountering rain or snow during daily use, the ventilation component 20 can ensure that airflow is guided to the inside of the container 2 by the cooling fan 21 through the inner support cylinder 201. At the same time, due to the shielding of the curved cover plate 203 and the protection of the outer support cylinder 202, rainwater will be isolated outside the inner support cylinder 201.

[0031] like Figures 3-6After the two adjustable box plates 6 are flipped over, several baffles 17 are arranged and installed on the structural surface facing the internal space of the container 2. Fasteners 19 are provided on the top of the front and rear ends of the container 2. Limiting grooves 18 are opened in the top structure of the two adjustable box plates 6 after they are flipped over. The fasteners 19 include screws and nuts fixed on the inner wall of the top of the container 2. The screws can be movably connected with the limiting grooves 18 and then threadedly connected with the nuts to lock and limit the adjustable box plates 6 and the container 2. In use, considering the stability effect of the adjusting box plate 6 in protecting the interior space of the container 2 during the flipping process, the screw is used to make way for the limiting groove 18 inside the adjusting box plate 6 after the flipping process. Then, the nut is screwed to the screw until the nut contacts the surface of the adjusting box plate 6 and is pressed and limited.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the invention. The invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modeling method for a new energy power station simulator, characterized in that: Specifically, the steps include the following: S1. Develop and debug digital packaging models using ADPSS software on the Windows platform and ADPSS software on the Linux platform. S2. Based on the establishment of the digital packaging model, and in accordance with the simulation environment, the new energy controller hardware is connected to the simulation machine equipment to carry out relevant simulation modeling work. S3. Obtain the primary circuit topology and parameters of the new energy unit or SVG and establish a primary circuit model based on the primary circuit topology and parameters through the ADPSS simulation platform; S4. Obtain the interface signal table, which includes the interface number, pin number, signal name, signal type, level range, and signal ratio. Modify the controller's hardware and software configuration according to the ADPSS interface requirements. S5. Debug the model using the actual controller in conjunction with the ADPSS simulation platform; S6. Conduct characteristic tests of new energy unit models on the ADPSS simulation platform, including steady-state operating condition tests and fault ride-through characteristic tests.

2. The new energy power station simulation modeling method according to claim 1, characterized in that: The development of digital encapsulation models for ADPSS software on the Windows platform includes Windows "unified interface" technology training, Windows development of the "unified interface" for digital control models, and primary system modeling; Debugging the digital encapsulation model of the ADPSS software on the Windows platform includes testing and troubleshooting of the digital encapsulation model on the Windows platform, detailed dynamic characteristic comparison testing of the digital encapsulation model, multi-instance operation capability testing, and grid access capability testing with different short-circuit ratios.

3. The new energy power station simulation modeling method according to claim 1, characterized in that: The development of the digital packaging model for ADPSS software on the Linux platform includes training on Linux "unified interface" technology and Linux packaging of the "unified interface" for the digital control model; the debugging of the digital packaging model for ADPSS software on the Linux platform includes debugging of the Linux digital packaging model, testing and troubleshooting of the digital packaging model on the Linux platform, and comparison testing between Linux and Windows.

4. The new energy power station simulation modeling method according to claim 1, characterized in that: The library files used in the digital encapsulation model cannot use a common naming convention. They must be strongly associated with the new energy model equipment, be able to connect to power grids with different short-circuit ratios, and pass testing.

5. A testing method for a digital packaging model, applied to the modeling method for a new energy power station simulator as described in claim 1, characterized in that, The method includes the following steps: S1, Steady-state test Functional tests were conducted on wind turbines and photovoltaic systems, including unlocking / locking, power increase / decrease, power step, and control mode switching. S2, Detailed Dynamic Performance Comparison Test Wind turbines and photovoltaic systems underwent eight tests according to testing standards: high power +20% three-phase drop, high power +130% three-phase rise, high power +20% two-phase drop, high power +130% two-phase rise, low power +20% three-phase drop, low power +130% three-phase rise, low power +20% two-phase drop, and low power +130% two-phase rise. Detailed waveform comparisons were also conducted on the instantaneous values ​​of voltage and current on the high-voltage side of the transformer, voltage and current on the low-voltage side of the transformer, instantaneous values ​​of DC bus voltage, and control and protection status. S3 Multi-Instance Operation Capability Test Based on the digital encapsulation model, two single-machine cases are constructed, one with a fault and the other without a fault. A dual-machine case is then constructed, which is completed in one step by importing the single-machine case through a computational example. There is no connection between the two machines. One machine is set to be faulty and the other is not faulty. Run three cases: two single-machine cases and one dual-machine case. In the result verification, the simulation results of each machine in the dual-machine simulation must be completely consistent with the simulation results of the corresponding single-machine example. S4. Testing the grid connection capability of different short-circuit ratios Based on the rated capacity of the unit, five typical short-circuit ratios were tested, including 1.8, 2.5, 4, 10, and 20. The short-circuit capacity was then tested based on the short-circuit ratios. Different short-circuit ratios were simulated according to the ideal power supply plus RL branch mode (X=U^2 / Prate / MSCR, R=X / 10). Eight tests were conducted according to the test standards for high power +20% three-phase drop, high power +130% three-phase rise, high power +20% two-phase drop, high power +130% two-phase rise, low power +130% three-phase rise, low power +20% two-phase drop, and low power +130% two-phase rise to verify functionality. Comparison test of S5, Linux and Windows Wind turbines and photovoltaic systems underwent eight tests according to testing standards: high power +20% three-phase drop, high power +130% three-phase rise, high power +20% two-phase drop, high power +130% two-phase rise, low power +20% three-phase drop, low power +130% three-phase rise, low power +20% two-phase drop, and low power +130% two-phase rise. Detailed waveform comparisons were also conducted on the instantaneous values ​​of voltage and current on the high-voltage side of the transformer, voltage and current on the low-voltage side of the transformer, instantaneous values ​​of DC bus voltage, and control and protection status.

6. A simulation machine device, applied in the new energy power station simulation modeling method according to claim 1, characterized in that: The simulator equipment includes a mobile platform (1) and a container (2) loaded and moved by the mobile platform (1). The container (2) contains a simulator equipment (3), a display control platform (4), and a seat (5). The front and rear ends of the container (2) are hinged with adjustment plates (6) by pins. An installation space is provided inside one side of the container (2), and a bidirectional transmission mechanism is installed in the installation space. The output structure inside the bidirectional transmission mechanism can drive the pins inside the two adjustment plates (6), so that the two adjustment plates (6) can automatically flip to make way or flip to close the internal space of the container (2). The bidirectional transmission mechanism includes a first gear (7) and an electric push rod (9). The middle part of the first gear (7) is fitted with a support shaft fixed on the inner wall of one side of the installation space via a bearing. The top and bottom of the first gear (7) are meshed and connected to a composite straight tooth plate (8) that slides on the inner wall of one side of the installation space. The bottom of the composite straight tooth plate (8) is connected to a linkage tooth plate (10). One end of each of the two linkage tooth plates (10) is meshed and connected to a second gear (11). The middle parts of the two second gears (11) are respectively connected to the corresponding ends of the internal pins of the two adjustment box plates (6). The output end of the electric push rod (9) is connected to the middle part of one of the composite straight tooth plates (8).

7. A simulation machine device according to claim 6, characterized in that: The simulator equipment (3) includes an industrial cabinet, and the industrial cabinet contains a server, a real-time simulator, network equipment, an I / O chassis and a power supply device. One side of each of the two composite straight tooth plates (8) is fitted with a guide rail (12) fixed on the inner wall of the installation space, and a clearance is provided between the two composite straight tooth plates (8) and the inner wall of the installation space. A support seat is installed between the housing surface of the electric push rod (9) and the inner wall of the installation space.

8. A simulation machine device according to claim 6, characterized in that: A through-type slide groove (13) is provided on one side wall of the installation space, and a transmission bracket (14) is engaged in the front and rear ends of the slide groove (13). One side of each of the two transmission brackets (14) extends into the interior of the container (2) and is connected to an elastic buffer assembly (15). The two elastic buffer assemblies (15) can provide elastic clamping and buffering for the simulator equipment (3). The elastic buffer assembly (15) includes a damping rubber plate (151), and a plurality of guide rods (152) are arranged on the surface of the damping rubber plate (151). One end of each of the guide rods (152) passes through the side structure of the corresponding transmission bracket (14) and extends to the outside of the transmission bracket (14). A plurality of buffer springs (153) are installed between the damping rubber plate (151) and the surface of the corresponding transmission bracket (14). The damping rubber plate (151) has through-shaped assembly grooves at its top and bottom, and a damping rubber cylinder (154) that can contact and rub against the surface of the simulator equipment (3) is installed inside the assembly groove.

9. A simulator device according to claim 7, characterized in that: The industrial cabinet is equipped with a photovoltaic controller. The two adjustment boxes (6) are flipped over and the structural surfaces facing the interior space of the container (2) are inlaid with photovoltaic panels (16). The photovoltaic controller is electrically connected to the photovoltaic panels (16) and the power supply device through wires. Several baffles (17) are arranged on the structural surface of the two adjustment box plates (6) facing the internal space of the container (2) after they are flipped over. Fasteners (19) are provided on the top of the front and rear ends of the container (2). Limiting grooves (18) are opened in the top structure of the two adjustment box plates (6) after they are flipped over. The fasteners (19) include screws and nuts fixed on the inner wall of the top of the container (2). The screws can be movably connected with the limiting grooves (18) and then threadedly connected with the nuts to lock and limit the adjustment box plates (6) and the container (2).

10. A simulator device according to claim 6, characterized in that: A cooling fan (21) is fitted on one side of the top of the container (2), and a ventilation assembly (20) is provided on the top of the cooling fan (21). The ventilation assembly (20) includes an inner support cylinder (201), an outer support cylinder (202), and an arc-shaped cover plate (203). The bottom of the inner support cylinder (201) is fixed to the top of the container (2), the outer support cylinder (202) is fitted on the outside of the bottom of the inner support cylinder (201), and the arc-shaped cover plate (203) is fixed to the top of the inner support cylinder (201). The top structure of the inner support cylinder (201) is provided with a ventilation slot.

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