CN115879311A - Simulation analysis method and device based on RTDS large power grid equivalent model - Google Patents
Simulation analysis method and device based on RTDS large power grid equivalent model Download PDFInfo
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Abstract
The invention discloses a simulation analysis method and a simulation analysis device based on an RTDS (real time digital system) large power grid equivalent model, which are applied to an RTDS and direct-current hybrid large power grid, and the method comprises the following steps: s1, randomly acquiring a first bus with a new energy unit, and putting the first bus into a preset task queue; s2, performing equivalent modeling on the unit with the new energy source based on the first bus and the task queue by combining a preset voltage threshold value to obtain a power grid equivalent model; s3, judging whether all the nodes in the task queue are traversed or not; if not, returning to execute the step S2; and S4, receiving a simulation analysis instruction, and performing simulation analysis by using the equivalent model to obtain a simulation analysis result. Based on an RTDS platform, the establishment and simulation analysis of the equivalent model of the large power grid are realized, and a large amount of simulation resources are saved under the condition of high-proportion new energy infiltration at the present stage.
Description
Technical Field
The invention relates to the technical field of simulation analysis technology, in particular to a simulation analysis method and device based on an RTDS large power grid equivalent model.
Background
With the rapid development of large AC/DC hybrid power grids and the penetration of new energy with a high proportion of vigorous development, full electromagnetic transient modeling and simulation analysis are carried out on large-scale AC/DC hybrid power grids, which become necessary requirements for power grid development. However, the electromagnetic transient simulation calculation amount is huge, so that the simulation efficiency is reduced, and the application of the electromagnetic transient simulation calculation amount to a practical large power grid is further restricted.
Although a Real Time Digital Simulator (RTDS) fully utilizes a large-scale parallel computing technology and is a currently recognized high-efficiency electromagnetic transient simulation device, the computing capability of the RTDS is greatly related to hardware configuration, and a huge investment in hardware is required to be invested in order to realize full electromagnetic transient simulation of a large-scale alternating current-direct current parallel-series power grid. In addition, in practical application, the new energy model related to the large power grid model with high-proportion new energy penetration has large calculation amount, and the system scale needs to be reduced while the simulation precision is ensured.
In summary, under the condition of high-proportion new energy infiltration at the present stage, no efficient equivalent method exists under the alternating-current and direct-current hybrid large power grid for the RTDS platform.
Disclosure of Invention
The invention provides a simulation analysis method and a simulation analysis device based on an RTDS large power grid equivalent model, which are used for realizing the establishment and the simulation analysis of the large power grid equivalent model based on an RTDS platform and saving a large amount of simulation resources under the condition of high-proportion new energy infiltration at the present stage.
In a first aspect, the invention provides a simulation analysis method based on an RTDS large power grid equivalent model, which is applied to an RTDS and direct-current hybrid large power grid and comprises the following steps:
s1, randomly acquiring a first bus with a new energy unit, and putting the first bus into a preset task queue;
s2, performing equivalent modeling on the unit with the new energy source based on the first bus and the task queue by combining a preset voltage threshold value to obtain a power grid equivalent model;
s3, judging whether all the nodes in the task queue are traversed or not; if not, returning to execute the step S2;
and S4, receiving a simulation analysis instruction, and performing simulation analysis by using the equivalent model to obtain a simulation analysis result.
Optionally, the step 2 includes:
s21, selecting a first node in the task queue, and determining a transformer connected with the first node;
s22, carrying out bus searching of the first bus from the high-voltage side direction of the transformer, carrying out equivalent modeling on the unit with the new energy source by combining a preset voltage threshold value to obtain a power grid equivalent model, and removing the first node.
Optionally, the step S22 includes:
s221, searching the bus in the direction of the high-voltage side of the transformer, and judging whether a second bus with the voltage level higher than the voltage threshold exists or not; if yes, go to step S222; if not, go to step S223;
s222, finishing the bus searching of the first bus, defining the equivalence of the first bus to the second bus, and performing equivalence modeling on the unit with the new energy source based on the second bus to obtain an equivalent model of the power grid;
and S223, adding all buses connected with the first bus into the task queue.
Optionally, the step S222 includes:
counting all new energy source units equivalent to the second bus, and respectively performing statistical summation on active power and reactive power of the new energy source units according to the types of the new energy source units to obtain an initial power grid equivalent model;
and modifying the multiplying coefficient of the initial power grid equivalent model to obtain the power grid equivalent model.
In a second aspect, the present invention further provides a simulation analysis apparatus based on the RTDS large power grid equivalent model, which is applied to the RTDS and dc hybrid large power grid, and includes:
the acquisition module is used for randomly acquiring a first bus with a new energy unit and putting the first bus into a preset task queue;
the power grid equivalent model determining module is used for performing equivalent modeling on the new energy source unit based on the first bus and the task queue by combining a preset voltage threshold value to obtain a power grid equivalent model;
the judging module is used for judging whether all the nodes in the task queue are traversed or not; if not, executing the power grid equivalent model determining module;
and the simulation analysis module is used for receiving the simulation analysis instruction and carrying out simulation analysis by using the equivalent model to obtain a simulation analysis result.
Optionally, the power grid equivalence model determination module includes:
the node determination submodule is used for selecting a first node in the task queue and determining a transformer connected with the first node;
and the eliminating submodule is used for carrying out bus searching on the first bus from the direction of the high-voltage side of the transformer, carrying out equivalent modeling on the new energy source unit by combining a preset voltage threshold value to obtain a power grid equivalent model, and eliminating the first node.
Optionally, the culling sub-module comprises:
the judging unit is used for searching the bus in the high-voltage side direction of the transformer and judging whether a second bus with the voltage level higher than the voltage threshold exists or not; if so, executing the power grid equivalent model unit; if not, executing a task queue adding unit;
the power grid equivalent model is used for finishing the bus search of the first bus, defining the first bus equivalent to the second bus, and performing equivalent modeling on the new energy generating set based on the second bus to obtain the power grid equivalent model;
and the task queue adding unit is used for adding all buses connected with the first bus into the task queue.
Optionally, the power grid equivalence model includes:
the statistical subunit is used for counting all new energy source units equivalent to the second bus, and performing statistical summation on active power and reactive power of the new energy source units respectively according to the types of the new energy source units to obtain an initial power grid equivalent model;
and the correction subunit is used for modifying the multiplication coefficient of the initial power grid equivalent model to obtain the power grid equivalent model.
A third aspect of the application provides an electronic device comprising a processor and a memory;
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is used for executing the simulation analysis method based on the RTDS large power grid equivalent model according to the instructions in the program codes.
A fourth aspect of the present application provides a computer-readable storage medium for storing program code for executing the simulation analysis method based on the RTDS large power grid equivalence model according to the first aspect.
According to the technical scheme, the invention has the following advantages:
the invention discloses a simulation analysis method and a simulation analysis device based on an RTDS large power grid equivalent model, which are applied to an RTDS and direct-current series-parallel large power grid and comprise the following steps: s1, randomly acquiring a first bus with a new energy unit, and putting the first bus into a preset task queue; s2, performing equivalent modeling on the unit with the new energy source based on the first bus and the task queue by combining a preset voltage threshold value to obtain a power grid equivalent model; s3, judging whether all the nodes in the task queue are traversed or not; if not, returning to execute the step S2; and S4, receiving a simulation analysis instruction, and performing simulation analysis by using the equivalent model to obtain a simulation analysis result. Based on an RTDS platform, the establishment and simulation analysis of the equivalent model of the large power grid are realized, and a large amount of simulation resources are saved under the condition of high-proportion new energy infiltration at the present stage.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a flowchart of a first step of a simulation analysis method based on an RTDS large power grid equivalent model according to an embodiment of the present invention;
FIG. 2 is a flowchart of steps of a second embodiment of a simulation analysis method based on an RTDS large power grid equivalent model according to the present invention;
fig. 3 is a structural block diagram of an embodiment of a simulation analysis device based on an RTDS large power grid equivalent model.
Detailed Description
The embodiment of the invention provides a simulation analysis method and a simulation analysis device based on an RTDS large power grid equivalent model, which are used for realizing the establishment and the simulation analysis of the large power grid equivalent model based on an RTDS platform and saving a large amount of simulation resources under the condition of high-proportion new energy infiltration at the present stage.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The research on the safety and stability of a large-scale alternating current and direct current hybrid power grid becomes a hot point concerned by the academic and engineering communities in China, the digital simulation of a power system is an effective tool for researching the operation characteristics of the large-scale alternating current and direct current hybrid power grid, and the accuracy of the digital simulation directly influences the reliability of an analysis result.
The core of the electromechanical transient simulation analysis is to study the swing process between the rotors of the generators caused by energy transfer, and the energy transfer of the power network is mainly determined by a positive sequence fundamental frequency component, so that the electromechanical transient simulation based on a positive sequence fundamental wave phasor model cannot describe the interaction characteristics under the non-fundamental frequency between an alternating current system and a direct current system. In addition, electromechanical transient simulation software generally adopts a direct current quasi-steady-state model to simulate the dynamic response process of a direct current system, and the problems that commutation failure under asymmetric faults cannot be accurately judged, the fault recovery process is not accurate enough and the like exist.
The electromagnetic transient simulation mainly researches the change conditions of voltage and current instantaneous values in a short time, and is based on a three-phase instantaneous value model, a differential equation is adopted for description, variables in the system are not phasors any more but three-phase instantaneous values, and the simulation model considers the nonlinear dynamic characteristics of elements, the distribution parameter characteristics of lines and the like, so that the electromagnetic transient simulation can accurately simulate the switching process of power electronic equipment such as a High Voltage Direct Current (HVDC) system and a Flexible Alternating Current Transmission System (FACTS), and can truly reflect the dynamic characteristics of the power electronic equipment. However, the calculation capability of the RTDS is greatly related to the hardware configuration, and a large investment in hardware is required to realize full electromagnetic transient simulation of a large-scale alternating current-direct current hybrid power grid. In addition, in practical application, the new energy model related to the large power grid model with high-proportion new energy penetration has large calculation amount, and the system scale needs to be reduced while the simulation precision is ensured.
To solve the above problems, the present invention discloses a method for controlling a cross-voltage class power flow of a power distribution network, please refer to fig. 1, where fig. 1 is a flowchart of a first step of the method for controlling a cross-voltage class power flow of a power distribution network, and the method is applied to an RTDS and a dc hybrid large power grid, and includes:
s1, randomly acquiring a first bus with a new energy unit, and putting the first bus into a preset task queue;
s2, performing equivalent modeling on the unit with the new energy source based on the first bus and the task queue by combining a preset voltage threshold value to obtain a power grid equivalent model;
specifically, the step 2 includes:
s21, selecting a first node in the task queue, and determining a transformer connected with the first node;
s22, carrying out bus searching of the first bus from the high-voltage side direction of the transformer, carrying out equivalent modeling on the unit with the new energy source by combining a preset voltage threshold value to obtain a power grid equivalent model, and removing the first node.
In an alternative embodiment, the step S22 includes:
s221, searching the bus in the direction of the high-voltage side of the transformer, and judging whether a second bus with the voltage level higher than the voltage threshold exists or not; if yes, go to step S222; if not, go to step S223;
s222, finishing the bus searching of the first bus, defining the equivalence of the first bus to the second bus, and performing equivalence modeling on the unit with the new energy source based on the second bus to obtain an equivalent model of the power grid;
and S223, adding all buses connected with the first bus into the task queue.
S3, judging whether all the nodes in the task queue are traversed or not; if not, returning to execute the step S2;
and S4, receiving a simulation analysis instruction, and performing simulation analysis by using the equivalent model to obtain a simulation analysis result.
The method comprises the following steps of randomly acquiring a first bus with a new energy unit through S1, and putting the first bus into a preset task queue; s2, performing equivalent modeling on the unit with the new energy source based on the first bus and the task queue by combining a preset voltage threshold value to obtain a power grid equivalent model; s3, judging whether all the nodes in the task queue are traversed or not; if not, returning to execute the step S2; and S4, receiving a simulation analysis instruction, and performing simulation analysis by using the equivalent model to obtain a simulation analysis result. Based on an RTDS platform, the establishment and simulation analysis of the equivalent model of the large power grid are realized, and a large amount of simulation resources are saved under the condition of high-proportion new energy infiltration at the present stage.
Referring to fig. 2, fig. 2 is a flowchart illustrating steps of a second simulation analysis method based on an RTDS large power grid equivalent model according to an embodiment of the present invention; the method is applied to the RTDS and the direct current hybrid power grid, and comprises the following steps:
s201, randomly acquiring a first bus with a new energy unit, and putting the first bus into a preset task queue;
it should be noted that the RTDS is called a Real Time Digital Simulator (Real Time Digital Simulator), and is a simulation device specially designed for studying electromagnetic transient phenomena of a power system.
In specific implementation, the BUS BUS A with the new energy unit selected randomly, namely the first BUS, is placed in a preset task queue.
S202, selecting a first node in the task queue, and determining a transformer connected with the first node;
s203, searching the bus in the direction of the high-voltage side of the transformer, and judging whether a second bus with the voltage level higher than the voltage threshold exists or not; if yes, go to step S204; if not, go to step S206;
s204, counting all new energy source units equivalent to the second bus, and respectively carrying out statistical summation on active power and reactive power of the new energy source units according to the types of the new energy source units to obtain an initial power grid equivalent model;
s205, modifying the multiplying coefficient of the initial power grid equivalent model to obtain the power grid equivalent model;
s206, adding all buses connected with the first bus into the task queue;
in the embodiment of the invention, a first node is taken out from a task queue, a BUS searching is carried out in the direction of the high-voltage side of a network through a transformer connected with the first node, if BUS B with the voltage level higher than a voltage threshold (namely 220 kV) exists, namely a second BUS, if BUS B exists, the voltage level is higher than the voltage threshold, all new energy source units equivalent to the second BUS are counted, the active power and the reactive power of the new energy source units are respectively counted and summed according to the types of the new energy source units to obtain an initial power grid equivalent model, then the multiplying coefficient of the model of the new energy source units is modified to complete the equivalence, and the power grid equivalent model is obtained; and if not, adding all buses connected with the first bus through the line into the queue.
S207, judging whether all the nodes in the task queue are traversed; if not, returning to execute the step S202;
and S208, receiving a simulation analysis instruction, and performing simulation analysis by using the equivalent model to obtain a simulation analysis result.
In the embodiment of the present invention, when a simulation analysis instruction sent by an operation and maintenance worker is received, the known model obtained in step S205 is used to perform simulation analysis, so as to obtain a simulation analysis result.
Most of the voltage levels of the new energy source unit connected to the power grid side are less than 220kV, but in RTDS electromagnetic transient simulation, simulation of a large power grid model generally only uses a model containing a grid structure of more than 220kV, and the requirement on computing resources is too high due to the fact that nodes below 220kV are too many. Therefore, the contradiction between resources and simulation scale is further enhanced by the high-proportion new energy grid connection. The bus bars containing the new energy bank need to be equally valued in the direction of the high voltage level. The topology of the power grid can be considered as a graph structure, so that each bus with a new energy source unit can be regarded as a unit node, buses found from the unit nodes in the direction of the high-voltage side through a transformer can be regarded as the same node on the graph, and lines among all the connecting buses can be regarded as connecting lines on the graph. The simulation analysis method and device based on the RTDS large power grid equivalent model provided by the embodiment of the invention are applied to RTDS and direct-current series-parallel large power grids, and comprise the following steps: s1, randomly acquiring a first bus with a new energy unit, and putting the first bus into a preset task queue; s2, performing equivalent modeling on the unit with the new energy source based on the first bus and the task queue by combining a preset voltage threshold value to obtain a power grid equivalent model; s3, judging whether all the nodes in the task queue are traversed or not; if not, returning to execute the step S2; and S4, receiving a simulation analysis instruction, and performing simulation analysis by using the equivalent model to obtain a simulation analysis result. Based on an RTDS platform, a breadth-first search algorithm is used for finding out the nearest high-voltage-level bus of more than 220kV of each bus to be equivalent with a new energy unit, so that the equivalence is achieved, the establishment and simulation analysis of a large power grid equivalence model are achieved, and a large amount of simulation resources are saved under the condition that high-proportion new energy permeates at the present stage.
Referring to fig. 3, a structural block diagram of an embodiment of a simulation analysis device based on an RTDS large grid equivalent model is shown, which is applied to an RTDS and dc hybrid large grid, and includes:
the acquisition module 301 is configured to randomly acquire a first bus with a new energy unit, and place the first bus in a preset task queue;
the power grid equivalent model determining module 302 is used for performing equivalent modeling on the unit with the new energy source based on the first bus and the task queue by combining a preset voltage threshold value to obtain a power grid equivalent model;
a judging module 303, configured to judge whether all nodes in the task queue have been traversed; if not, executing the power grid equivalent model determining module;
and the simulation analysis module 304 is configured to receive a simulation analysis instruction, and perform simulation analysis by using the equivalent model to obtain a simulation analysis result.
In an optional embodiment, the grid equivalence model determination module 302 includes:
the node determination submodule is used for selecting a first node in the task queue and determining a transformer connected with the first node;
and the eliminating submodule is used for carrying out bus searching on the first bus from the high-voltage side direction of the transformer, carrying out equivalent modeling on the new energy source unit by combining a preset voltage threshold value to obtain a power grid equivalent model, and eliminating the first node.
In an alternative embodiment, the culling sub-module comprises:
the judging unit is used for searching the bus in the high-voltage side direction of the transformer and judging whether a second bus with the voltage level higher than the voltage threshold exists or not; if so, executing the power grid equivalent model unit; if not, executing a task queue adding unit;
the power grid equivalent model is used for finishing the bus searching of the first bus, defining the first bus equivalent to the second bus, and performing equivalent modeling on the new energy source unit based on the second bus to obtain the power grid equivalent model;
and the task queue adding unit is used for adding all buses connected with the first bus into the task queue.
In an optional embodiment, the grid equivalence model comprises:
the statistical subunit is used for counting all new energy source units equivalent to the second bus, and performing statistical summation on active power and reactive power of the new energy source units respectively according to the types of the new energy source units to obtain an initial power grid equivalent model;
and the correction subunit is used for modifying the multiplication coefficient of the initial power grid equivalent model to obtain the power grid equivalent model.
The application also provides an electronic device, which comprises a processor and a memory;
the memory is used for storing the program codes and transmitting the program codes to the processor;
the processor is used for executing the simulation analysis method based on the RTDS large power grid equivalent model in the method embodiment according to the instructions in the program code.
The application also provides a computer-readable storage medium for storing program codes, wherein the program codes are used for executing the simulation analysis method based on the RTDS large power grid equivalent model in the method embodiment.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for executing all or part of the steps of the method described in the embodiments of the present application through a computer device (which may be a personal computer, a server, or a network device). And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A simulation analysis method based on an RTDS large power grid equivalent model is applied to an RTDS and direct-current series-parallel large power grid, and is characterized by comprising the following steps:
s1, randomly acquiring a first bus with a new energy unit, and putting the first bus into a preset task queue;
s2, performing equivalent modeling on the unit with the new energy source based on the first bus and the task queue by combining a preset voltage threshold value to obtain a power grid equivalent model;
s3, judging whether all the nodes in the task queue are traversed or not; if not, returning to execute the step S2;
and S4, receiving a simulation analysis instruction, and performing simulation analysis by using the equivalent model to obtain a simulation analysis result.
2. The simulation analysis method based on the RTDS large power grid equivalent model according to claim 1, wherein the step 2 comprises:
s21, selecting a first node in the task queue, and determining a transformer connected with the first node;
and S22, carrying out bus searching on the first bus from the direction of the high-voltage side of the transformer, carrying out equivalent modeling on the unit with the new energy source by combining a preset voltage threshold value to obtain a power grid equivalent model, and removing the first node.
3. The RTDS large power grid equivalent model-based simulation analysis method according to claim 2, wherein the step S22 comprises:
s221, searching the bus in the direction of the high-voltage side of the transformer, and judging whether a second bus with the voltage level higher than the voltage threshold exists or not; if yes, go to step S222; if not, go to step S223;
s222, finishing the bus searching of the first bus, defining the equivalence of the first bus to the second bus, and performing equivalence modeling on the unit with the new energy source based on the second bus to obtain an equivalent model of the power grid;
and S223, adding all buses connected with the first bus into the task queue.
4. The simulation analysis method based on the RTDS large power grid equivalent model according to claim 3, wherein the step S222 comprises:
counting all new energy source units equivalent to the second bus, and respectively carrying out statistical summation on active power and reactive power of the new energy source units according to the types of the new energy source units to obtain an initial power grid equivalent model;
and modifying the multiplication coefficient of the initial power grid equivalent model to obtain the power grid equivalent model.
5. The utility model provides a simulation analysis device based on RTDS big electric wire netting equivalence model, is applied to RTDS and big electric wire netting of direct current series-parallel connection, its characterized in that includes:
the acquisition module is used for randomly acquiring a first bus with a new energy unit and putting the first bus into a preset task queue;
the power grid equivalent model determining module is used for performing equivalent modeling on the new energy source unit based on the first bus and the task queue by combining a preset voltage threshold value to obtain a power grid equivalent model;
the judging module is used for judging whether all the nodes in the task queue are traversed or not; if not, executing the power grid equivalent model determining module;
and the simulation analysis module is used for receiving the simulation analysis instruction and carrying out simulation analysis by using the equivalent model to obtain a simulation analysis result.
6. The RTDS large power grid equivalence model-based simulation analysis device according to claim 5, wherein the power grid equivalence model determination module comprises:
the node determination submodule is used for selecting a first node in the task queue and determining a transformer connected with the first node;
and the eliminating submodule is used for carrying out bus searching on the first bus from the high-voltage side direction of the transformer, carrying out equivalent modeling on the new energy source unit by combining a preset voltage threshold value to obtain a power grid equivalent model, and eliminating the first node.
7. The simulation analysis device based on the RTDS large power grid equivalent model as claimed in claim 6, wherein the eliminating submodule comprises:
the judging unit is used for searching the bus in the high-voltage side direction of the transformer and judging whether a second bus with the voltage level higher than the voltage threshold exists or not; if so, executing the power grid equivalent model unit; if not, executing a task queue adding unit;
the power grid equivalent model is used for finishing the bus search of the first bus, defining the first bus equivalent to the second bus, and performing equivalent modeling on the new energy generating set based on the second bus to obtain the power grid equivalent model;
and the task queue adding unit is used for adding all buses connected with the first bus into the task queue.
8. The RTDS large power grid equivalence model-based simulation analysis device according to claim 7, wherein the power grid equivalence model comprises:
the statistical subunit is used for counting all new energy source units equivalent to the second bus, and performing statistical summation on active power and reactive power of the new energy source units respectively according to the types of the new energy source units to obtain an initial power grid equivalent model;
and the correction subunit is used for modifying the multiplication coefficient of the initial power grid equivalent model to obtain the power grid equivalent model.
9. An electronic device comprising a processor and a memory, the memory storing computer readable instructions that, when executed by the processor, perform the method of any of claims 1-4.
10. A storage medium on which a computer program is stored, which computer program, when being executed by a processor, is adapted to carry out the method according to any one of claims 1-4.
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