A Method and System for Modeling and Simulation of Multiple New Energy Power Stations in a Regional Power Grid Based on ADPSS

Abstract

The present invention discloses a method and system for modeling and simulation of multiple new energy power stations in a regional power grid based on ADPSS. The method includes: equivalentizing the models of new energy units of the same type according to the single-machine multiplication factor, and encapsulating the single-machine multiplication factor model into a sub-circuit to obtain a single-machine multiplication factor encapsulated model; connecting the encapsulated models of different types of single-machine multiplication factors to the low-voltage side busbar of the grid connection point of the new energy power station, and accessing the system busbar through the step-up transformer and the busbar connection resistance of the power station, and encapsulating the single-power station equivalent model to obtain a single-power station equivalent encapsulated model; connecting the electromechanical interfaces of each grid connection point to the corresponding single-power station equivalent encapsulated model through the busbar, setting the simultaneous rate of regional new energy, and forming a multi-power station encapsulated model; performing electromechanical-electromagnetic subnetting, dividing the system side into the electromechanical subnet, and dividing the regional multiple new energy power stations into the electromagnetic subnet. Based on the electromechanical-electromagnetic subnetting, hybrid simulation is carried out, which can realize the efficient and accurate simulation of the electromagnetic transient characteristics of multiple new energy power stations in the regional power grid.

Description

Technical Field

[0001] The present invention belongs to the technical field of electromagnetic transient simulation modeling of power systems, and particularly relates to a method and system for modeling and simulating multiple new energy power stations in a regional power grid based on ADPSS. Background Art

[0002] In the new power system, the penetration rate of new energy is continuously increasing, squeezing the power generation space of conventional units, and traditional synchronous rotating equipment is gradually being replaced by power electronic equipment. New energy has characteristics such as low inertia and weak anti-interference performance. After large-scale access, the operating characteristics of the system have changed profoundly, and it is urgent to carry out power system simulation analysis and security and stability checking considering new energy.

[0003] The dynamic characteristics of power electronic equipment are generally in the microsecond level. The millisecond-level electromechanical simulation described by traditional phasors can no longer meet the requirements, and a microsecond-level electromagnetic simulation model with three-phase characterization must be introduced to analyze the characteristics of new energy. If a full electromagnetic simulation model is used to analyze the operating characteristics of new energy, the simulation efficiency will be greatly reduced due to the large number of electromagnetic calculation nodes and high calculation dimensions. Summary of the Invention

[0004] The present invention provides a method and system for modeling and simulating multiple new energy power stations in a regional power grid based on ADPSS to solve the technical problem of a significant reduction in simulation efficiency caused by a large number of electromagnetic calculation nodes and high calculation dimensions.

[0005] In the first aspect, the present invention provides a method for modeling and simulating multiple new energy power stations in a regional power grid based on ADPSS, including:

[0006] Obtain the single-machine type and quantity of new energy power stations, equivalent the models of new energy units of the same type according to the single-machine multiplication factor, and encapsulate the sub-circuits of the single-machine multiplication factor model to obtain a single-machine multiplication factor encapsulated model;

[0007] Connect the encapsulated models of different single-machine multiplication factors to the low-voltage side busbar of the connection point of the new energy power station, connect them to the system busbar through the step-up transformer and the busbar resistance of the power station, and encapsulate the equivalent model of a single power station to obtain an equivalent encapsulated model of a single power station;

[0008] Connect the electromechanical interfaces of each connection point to the corresponding equivalent encapsulated model of a single power station through the busbar, set the simultaneous rate of regional new energy, and form a multi-power station encapsulated model;

[0009] Conduct electromechanical-electromagnetic subnet division in the PSASP single-line diagram. The system side is divided into the electromechanical subnet, and the regional multi-new energy power stations are divided into the electromagnetic subnet. Based on the set faults in the PSASP program, conduct electromagnetic transient characteristic simulation research on the regional multi-new energy power stations, where the electromechanical subnet uses an electromechanical model, and the electromagnetic subnet uses the constructed multi-power station encapsulated model.

[0010] In a second aspect, the present invention provides a multi-new energy power station modeling and simulation system for a regional power grid based on ADPSS, including:

[0011] A first encapsulation module configured to obtain the single-machine types and quantities of new energy power stations, equivalent the models of new energy generating units of the same type according to the single-machine multiplication factor, and perform sub-circuit encapsulation on the single-machine multiplication factor model to obtain a single-machine multiplication factor encapsulated model;

[0012] A second encapsulation module configured to connect the encapsulated models of different single-machine multiplication factors to the low-voltage side busbar of the grid connection point of the new energy power station, access the system busbar through the step-up transformer of the new energy power station and the busbar connection resistance of the power station, and encapsulate the single-power-station equivalent model to obtain a single-power-station equivalent encapsulated model;

[0013] A setting module configured to connect the mechanical and electrical interfaces of each grid connection point to the corresponding single-power-station equivalent encapsulated model through the busbar, and set the simultaneous utilization rate of regional new energy to form a multi-power-station encapsulated model;

[0014] A division module configured to perform mechanical-electrical and electromagnetic network division in the PSASP single-line diagram, divide the system side into the mechanical-electrical subnet, divide the regional multi-new energy power stations into the electromagnetic subnet, and carry out electromagnetic transient characteristic simulation research on the regional multi-new energy power stations based on the set faults in the PSASP program. Among them, the mechanical-electrical subnet adopts the mechanical-electrical model, and the electromagnetic subnet adopts the constructed multi-power-station encapsulated model.

[0015] In a third aspect, there is provided an electronic device, which includes: at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the steps of the method for modeling and simulating a multi-new energy power station in a regional power grid based on ADPSS according to any embodiment of the present invention.

[0016] In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the program instructions are executed by a processor, the processor is enabled to execute the steps of the method for modeling and simulating a multi-new energy power station in a regional power grid based on ADPSS according to any embodiment of the present invention.

[0017] The method and system for modeling and simulating a multi-new energy power station in a regional power grid based on ADPSS of the present application can achieve efficient and accurate simulation of the electromagnetic transient characteristics of the multi-new energy power stations in the regional power grid by gradually constructing a single-machine multiplication factor model, a single-power-station equivalent model, and a multi-power-station encapsulated model, measuring the multiplication factor power and the power of the power station, and carrying out hybrid simulation based on mechanical-electrical and electromagnetic network division. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a flowchart of a method for modeling and simulating multiple new energy power stations in a regional power grid based on ADPSS provided by an embodiment of the present invention;

[0020] Figure 2 It is a structural block diagram of a system for modeling and simulating multiple new energy power stations in a regional power grid based on ADPSS provided by an embodiment of the present invention;

[0021] Figure 3 It is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. Specific embodiments

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0023] Please refer to Figure 1 , which shows a flowchart of a method for modeling and simulating multiple new energy power stations in a regional power grid based on ADPSS of the present application.

[0024] As Figure 1 shown, the method for modeling and simulating multiple new energy power stations in a regional power grid based on ADPSS specifically includes the following steps:

[0025] Step S101, obtain the single-machine type and quantity of the new energy power station, equivalent the same-type new energy unit models according to the single-machine multiplication factor, and encapsulate the single-machine multiplication factor model with a sub-circuit to obtain a single-machine multiplication factor encapsulated model.

[0026] In this step, obtain the single-machine output current of the multiplication resistor, adjust the output current of the controlled three-phase current source to N - 1 times the single-machine current to obtain the output power of the single-machine multiplication factor model, and the output power is N times the single-machine power; obtain the instantaneous values of the first three-phase voltage and the first three-phase current output by the single-machine multiplication factor model, and calculate the active power and reactive power output by the single-machine multiplication factor model according to the first three-phase voltage and the first three-phase current instantaneous values; encapsulate the single-machine multiplication factor model with a sub-circuit to form a single-machine multiplication factor encapsulated model.

[0027] Step S102: Connect different types of single - unit multiplication - encapsulated models to the low - voltage side busbar of the connection point of the new - energy power station. Connect them to the system busbar through the step - up transformer and the station busbar resistance of the new - energy power station, and encapsulate the single - station equivalent model to obtain the single - station equivalent encapsulated model.

[0028] In this step, obtain the instantaneous values of the second three - phase voltage and the second three - phase current output by the multi - type new - energy unit multiplication - encapsulated models, and calculate the active power and reactive power of the new - energy power station according to the instantaneous values of the second three - phase voltage and the second three - phase current; Connect a system resistance and an infinite - bus power source to the high - voltage side busbar of the connection point of the new - energy power station, and switch the two - path states through a switch. Among them, at the initial stage, the switch is closed, and the voltage source controls the busbar voltage of the connection point to drive the start - up of the new - energy model. After a few seconds, the switch is opened, and it is switched to interact with the new - energy model through the electromechanical interface; Use a sub - circuit to encapsulate the single - station equivalent model to form a single - station equivalent encapsulated model.

[0029] Step S103: Connect the electromechanical interfaces of each connection point to the corresponding single - station equivalent encapsulated models through the busbar, set the simultaneity rate of regional new - energy sources, and form a multi - station encapsulated model.

[0030] In this step, set the simultaneity rate of new - energy sources, and transmit the simultaneity rate of new - energy sources to all single - station equivalent encapsulated models to obtain a multi - station encapsulated model, where the multi - station encapsulated model adjusts the output of the controlled current source.

[0031] Step S104: Conduct electromechanical - electromagnetic subnetting in the PSASP single - line diagram. The system side is divided into the electromechanical subnet, and the regional multi - new - energy power stations are divided into the electromagnetic subnet. Based on the set faults in the PSASP program, carry out the electromagnetic transient characteristic simulation research on the regional multi - new - energy power stations, where the electromechanical subnet uses the electromechanical model, and the electromagnetic subnet uses the constructed multi - station encapsulated model.

[0032] In this step, in the single - line diagram subnetting, the boundaries are the outgoing lines of each new - energy power station, and the new - energy units, their box - type transformers, and the in - station step - up transformers are divided into the electromagnetic subnet; Analyze the component - level dynamic characteristics based on the simulation curves of the new - energy power stations and their components in the ADPSS program, and study the station - level dynamic characteristics through the simulation curves of the outgoing lines of the new - energy power stations in the PSASP program.

[0033] In summary, the method of this application can realize the efficient and accurate simulation of the electromagnetic transient characteristics of multi - new - energy power stations in a regional power grid by gradually constructing single - unit multiplication models, single - station equivalent models, and multi - station encapsulated models, measuring the multiplication power and station power, and carrying out hybrid simulation based on electromechanical - electromagnetic subnetting.

[0034] Please refer to Figure 2, which shows a structural block diagram of a multi-new energy power station modeling and simulation system for regional power grids based on ADPSS according to the present application.

[0035] As Figure 2 shown, the multi-new energy power station modeling and simulation system 200 for regional power grids includes a first encapsulation module 210, a second encapsulation module 220, a setting module 230, and a division module 240.

[0036] Among them, the first encapsulation module 210 is configured to obtain the single-unit types and quantities of new energy power stations, perform equivalence on the models of new energy generating units of the same type according to the single-unit multiplication factor, and perform sub-circuit encapsulation on the single-unit multiplication factor model to obtain a single-unit multiplication factor encapsulated model; the second encapsulation module 220 is configured to connect the encapsulated models of different single-unit multiplication factors to the low-voltage side busbar of the grid connection point of the new energy power station, connect them to the system busbar through the step-up transformer of the new energy power station and the busbar connection resistance of the power station, and perform encapsulation on the single-power-station equivalent model to obtain a single-power-station equivalent encapsulated model; the setting module 230 is configured to connect the mechanical and electrical interfaces of each grid connection point to the corresponding single-power-station equivalent encapsulated model through the busbar, set the simultaneous rate of regional new energy, and form a multi-power-station encapsulated model; the division module 240 is configured to perform mechanical-electrical and electromagnetic network division in the PSASP single-line diagram, divide the system side into the mechanical-electrical subnet, divide the regional multi-new energy power stations into the electromagnetic subnet, and conduct simulation research on the electromagnetic transient characteristics of the regional multi-new energy power stations based on the set faults in the PSASP program. Among them, the mechanical-electrical subnet uses the mechanical-electrical model, and the electromagnetic subnet uses the constructed multi-power-station encapsulated model.

[0037] It should be understood that Figure 2 the modules described in Figure 1 correspond to the respective steps in the method described in Figure 2 . Therefore, the operations, features, and corresponding technical effects described above for the method also apply to

[0038] the modules in

[0039] and will not be elaborated here.

[0040] Obtain the single-unit types and quantities of new energy power stations, perform equivalence on the models of new energy generating units of the same type according to the single-unit multiplication factor, and perform sub-circuit encapsulation on the single-unit multiplication factor model to obtain a single-unit multiplication factor encapsulated model;

[0041] Connect different types of single - machine multiplication packaging models to the low - voltage side busbar of the grid connection point of the new - energy power station. Connect them to the system busbar through the step - up transformer and the station busbar resistance of the new - energy power station, and package the single - station equivalent model to obtain the single - station equivalent packaging model;

[0042] Connect the mechanical and electrical interfaces of each grid connection point to the corresponding single - station equivalent packaging model through the busbar, and set the simultaneous utilization rate of regional new energy to form a multi - station packaging model;

[0043] Conduct mechanical - electrical and electromagnetic network separation in the PSASP single - line diagram. The system side is included in the mechanical - electrical subnet, and the regional multi - new - energy power stations are included in the electromagnetic subnet. Based on the set faults in the PSASP program, carry out the simulation research on the electromagnetic transient characteristics of the regional multi - new - energy power stations. Among them, the mechanical - electrical subnet uses the mechanical - electrical model, and the electromagnetic subnet uses the constructed multi - station packaging model.

[0044] The computer - readable storage medium may include a storage program area and a storage data area. Among them, the storage program area can store the operating system and application programs required for at least one function; the storage data area can store data created according to the use of the regional power grid multi - new - energy power station modeling and simulation system based on ADPSS, etc. In addition, the computer - readable storage medium may include high - speed random - access memory, and may also include memory, such as at least one magnetic disk storage device, a flash memory device, or other non - volatile solid - state storage devices. In some embodiments, the computer - readable storage medium may optionally include a memory remotely set relative to the processor, and these remote memories can be connected to the regional power grid multi - new - energy power station modeling and simulation system based on ADPSS through a network. Examples of the above - mentioned network include but are not limited to the Internet, enterprise intranet, local area network, mobile communication network, and their combinations.

[0045] Figure 3 is a schematic structural diagram of the electronic device provided by the embodiment of the present invention. As Figure 3 shown, the device includes: a processor 310 and a memory 320. The electronic device may further include: an input device 330 and an output device 340. The processor 310, the memory 320, the input device 330, and the output device 340 can be connected through a bus or other means. Figure 3Take the bus connection as an example. The memory 320 is the above-mentioned computer-readable storage medium. The processor 310 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions, and modules stored in the memory 320, that is, implements the above-mentioned method embodiment of the ADPSS-based regional power grid multi-new energy power station modeling and simulation method. The input device 330 can receive input digital or character information, and generate key signal inputs related to the user settings and function controls of the ADPSS-based regional power grid multi-new energy power station modeling and simulation system. The output device 340 can include display devices such as a display screen.

[0046] The above-mentioned electronic device can execute the method provided by the embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method. For technical details not described in detail in this embodiment, reference can be made to the method provided by the embodiment of the present invention.

[0047] As an implementation manner, the above-mentioned electronic device is applied to an ADPSS-based regional power grid multi-new energy power station modeling and simulation system for a client, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to:

[0048] Obtain the single-unit type and quantity of the new energy power station, perform equivalence on the same-type new energy unit models according to the single-unit multiplication factor, and perform sub-circuit packaging on the single-unit multiplication factor model to obtain a single-unit multiplication factor packaged model;

[0049] Connect the packaged models of different types of single-unit multiplication factors to the low-voltage side busbar of the connection point of the new energy power station, connect them to the system busbar through the step-up transformer and the busbar resistance of the power station, and package the single-power-station equivalent model to obtain a single-power-station equivalent packaged model;

[0050] Connect the mechanical and electrical interfaces of each connection point to the corresponding single-power-station equivalent packaged model through the busbar, set the simultaneous rate of regional new energy, and form a multi-power-station packaged model;

[0051] Perform mechanical-electrical and electromagnetic subnetting in the PSASP single-line diagram, divide the system side into the mechanical-electrical subnet, divide the regional multi-new energy power stations into the electromagnetic subnet, and carry out electromagnetic transient characteristic simulation research on the regional multi-new energy power stations based on the set faults in the PSASP program, wherein, the mechanical-electrical subnet uses a mechanical-electrical model, and the electromagnetic subnet uses the constructed multi-power-station packaged model.

[0052] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiments.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for modeling and simulation of multiple new energy power stations in a regional power grid based on ADPSS, characterized in that, Including: Obtain the single - machine types and quantities of new - energy power stations, equivalent the new - energy unit models of the same type according to the single - machine multiplication factor, and perform sub - circuit encapsulation on the single - machine multiplication - factor model to obtain the single - machine multiplication - factor encapsulated model. Among them, the steps of obtaining the single - machine types and quantities of new - energy power stations, equivalent the new - energy unit models of the same type according to the single - machine multiplication factor, and performing sub - circuit encapsulation on the single - machine multiplication - factor model to obtain the single - machine multiplication - factor encapsulated model include: Obtain the single - machine output current of the multiplication resistor, adjust the output current of the controlled three - phase current source to N - 1 times of the single - machine current, and obtain the output power of the single - machine multiplication - factor model, where the output power is N times of the single - machine power; Obtain the instantaneous values of the first three - phase voltage and the first three - phase current output by the single - machine multiplication - factor model, and calculate the active power and reactive power output by the single - machine multiplication - factor model according to the first three - phase voltage and the first three - phase current instantaneous values; Use a sub - circuit to encapsulate the single - machine multiplication - factor model to form a single - machine multiplication - factor encapsulated model; Connect different types of single - machine multiplication - factor encapsulated models to the low - voltage side bus of the connection point of the new - energy power station, connect to the system bus through the step - up transformer and the station bus resistance of the new - energy power station, and encapsulate the single - station equivalent model to obtain a single - station equivalent encapsulated model; Connect the mechanical - electrical interfaces of each connection point to the corresponding single - station equivalent encapsulated model through the bus, set the simultaneous utilization rate of regional new - energy sources, and form a multi - station encapsulated model; Conduct mechanical - electrical and electromagnetic network separation in the PSASP single - line diagram. The system side is included in the mechanical - electrical subnet, and the regional multi - new - energy power stations are included in the electromagnetic subnet. Based on the set faults in the PSASP program, carry out the simulation study on the electromagnetic transient characteristics of the regional multi - new - energy power stations. Among them, the mechanical - electrical subnet uses the mechanical - electrical model, and the electromagnetic subnet uses the constructed multi - station encapsulated model.

2. The multi-new energy power station modeling and simulation method for regional power grid based on ADPSS according to claim 1, characterized in that The steps of connecting different types of single - machine multiplication - factor encapsulated models to the low - voltage side bus of the connection point of the new - energy power station, connecting to the system bus through the step - up transformer and the station bus resistance of the new - energy power station, and encapsulating the single - station equivalent model to obtain a single - station equivalent encapsulated model include: Obtain the instantaneous values of the second three - phase voltage and the second three - phase current output by the multi - type new - energy unit multiplication - factor encapsulated model, and calculate the active power and reactive power of the new - energy power station according to the second three - phase voltage and the second three - phase current instantaneous values; Connect a system resistance and an infinite - bus power source to the high - voltage side bus of the connection point of the new - energy power station, and switch the two - way state through a switch. In the initial stage, the switch is closed, and the voltage source controls the bus voltage of the connection point to drive the start of the new - energy model. After several seconds, the switch is opened, and the connection is switched to the mechanical - electrical interface to interact with the new - energy model; Use a sub - circuit to encapsulate the single - station equivalent model to form a single - station equivalent encapsulated model.

3. A method for multi-new energy power station modeling and simulation of a regional power grid based on ADPSS according to claim 1, characterized in that The steps of connecting the mechanical - electrical interfaces of each connection point to the corresponding single - station equivalent encapsulated model through the bus, setting the simultaneous utilization rate of regional new - energy sources, and forming a multi - station encapsulated model include: Set the simultaneous utilization rate of new - energy sources, transfer the simultaneous utilization rate of new - energy sources to all single - station equivalent encapsulated models to obtain a multi - station encapsulated model, where the multi - station encapsulated model adjusts the output of the controlled current source.

4. A method for modeling and simulation of multiple new energy power stations in a regional power grid based on ADPSS according to claim 1, characterized in that, For the electromechanical-electromagnetic network separation in the PSASP single-line diagram, the system side is included in the electromechanical network, and multiple new energy power stations in the region are included in the electromagnetic network. Based on the set faults in the PSASP program, the simulation study on the electromagnetic transient characteristics of multiple new energy power stations in the region includes: In the single-line diagram network separation, the boundary is the outgoing lines of each new energy power station. The new energy generators, their box-type transformers, and the in-station step-up transformers are included in the electromagnetic network; Based on the simulation curves of the new energy power stations and their components in the ADPSS program, analyze the component-level dynamic characteristics, and study the station-level dynamic characteristics through the simulation curves of the outgoing lines of the new energy power stations in the PSASP program.

5. A multi-new energy power station modeling and simulation system for regional power grids based on ADPSS, characterized in that, Including: The first encapsulation module is configured to obtain the type and quantity of single units in the new energy power station, equivalent the models of the same type of new energy generators according to the single-unit multiplication factor, and perform sub-circuit encapsulation on the single-unit multiplication factor model to obtain the single-unit multiplication factor encapsulated model. Among them, the steps of obtaining the type and quantity of single units in the new energy power station, equivalent the models of the same type of new energy generators according to the single-unit multiplication factor, and performing sub-circuit encapsulation on the single-unit multiplication factor model to obtain the single-unit multiplication factor encapsulated model include: Obtain the single-unit output current of the multiplication resistor, adjust the output current of the controlled three-phase current source to N-1 times of the single-unit current to obtain the output power of the single-unit multiplication factor model, and the output power is N times of the single-unit power; Obtain the instantaneous values of the first three-phase voltage and the first three-phase current output by the single-unit multiplication factor model, and calculate the active power and reactive power output by the single-unit multiplication factor model according to the first three-phase voltage and the first three-phase current instantaneous values; Use a sub-circuit to encapsulate the single-unit multiplication factor model to form a single-unit multiplication factor encapsulated model; The second encapsulation module is configured to connect different types of single-unit multiplication factor encapsulated models to the low-voltage side busbar of the connection point of the new energy power station, connect to the system busbar through the step-up transformer and the busbar shunt resistor of the power station, and encapsulate the single-station equivalent model to obtain the single-station equivalent encapsulated model; The setting module is configured to connect the electromechanical interfaces of each connection point to the corresponding single-station equivalent encapsulated model through the busbar, and set the simultaneous rate of new energy in the region to form a multi-station encapsulated model; The division module is configured to perform electromechanical-electromagnetic network separation in the PSASP single-line diagram, include the system side in the electromechanical network, and include multiple new energy power stations in the region in the electromagnetic network. Based on the set faults in the PSASP program, carry out the simulation study on the electromagnetic transient characteristics of multiple new energy power stations in the region. Among them, the electromechanical network uses an electromechanical model, and the electromagnetic network uses the constructed multi-station encapsulated model.

6. An electronic device, characterized in that, Including: At least one processor, and a memory communicatively connected to the at least one processor. Among them, the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method according to any one of claims 1 to 4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method according to any one of claims 1 to 4.

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