Static var generator digital twin system, method, device and medium

Abstract

The invention discloses a static var generator digital twinning system, method and equipment and a medium. The system comprises an actual static var generator device, a static var generator digital twinning device and a remote terminal, the static var generator digital twinning device is used for constructing a static var generator digital twinning model based on device parameters of the actual static var generator device and a preset binary file, the simulation module is also used for receiving measurement data transmitted by actual static var generator equipment, writing the measurement data into the static var generator digital twinborn model and generating an electromagnetic transient simulation initialization section, and is also used for simulating the static var generator digital twinborn model containing the electromagnetic transient simulation initialization section and generating a simulation result; and the simulation result is transmitted to the remote terminal. According to the invention, a refined analysis means is provided for the control strategy research of the static var generator and the power grid, and the operation safety and stability of the power grid are improved.

Description

Technical Field

[0001] The present invention relates to the field of electric power technology, and in particular to a digital twin system, method, device and medium of a static VAR generator. Background Art

[0002] Static VAR generators play a vital role in modern power systems. Through fast and dynamic reactive power regulation, they can maintain voltage stability, improve system efficiency, reduce line losses, save energy and reduce consumption, and suppress voltage fluctuations and flickers, thereby ensuring the reliable operation of the power system. However, with the increasing complexity and dynamism of power systems, traditional static VAR generator equipment faces many challenges in monitoring, maintenance and optimization.

[0003] Digital twins are a mirror image of real physical systems in digital space, integrating modeling, simulation, sensor measurement and other aspects. Based on digital twin technology, high-precision panoramic simulation of static VAR generators and real-time system information interaction can be achieved, and the system can be monitored in real time to obtain more comprehensive monitoring information, effectively reducing the difficulty and cost of operation and maintenance of static VAR generators.

[0004] Existing digital twin methods for STATCOM usually only measure and collect status data of key parts of the STATCOM, such as voltage and current at the STATCOM converter ports. The purpose is to monitor the physical state of the STATCOM and provide fault warnings, but the dynamic response of the STATCOM and the power grid and the refined operation and maintenance of the power grid are not considered. Summary of the invention

[0005] In view of this, an object of the present invention is to overcome the deficiencies in the prior art and to provide a static VAR generator digital twin system, method, device and medium.

[0006] The present invention provides the following technical solutions:

[0007] In a first aspect, a static VAR generator digital twin system is provided in an embodiment of the present disclosure, the system comprising an actual static VAR generator device, a static VAR generator digital twin apparatus and a remote terminal, the actual static VAR generator device comprising an actual static VAR generator converter and an actual static VAR generator converter controller;

[0008] The STATCOM digital twin device is used to construct a STATCOM digital twin model based on the device parameters of the actual STATCOM device and a preset binary file;

[0009] The STATCOM digital twin device is further used to receive measurement data transmitted by the actual STATCOM converter controller, and write the measurement data into the STATCOM digital twin model to generate an electromagnetic transient simulation initialization section;

[0010] The static VAR generator digital twin device is also used to simulate the static VAR generator digital twin model containing the electromagnetic transient simulation initialization section, generate simulation results, and transmit the simulation results to the remote terminal.

[0011] Optionally, the digital twin model of the static VAR generator includes a main circuit model and a black box controller model, and the digital twin device of the static VAR generator includes a visualization modeling module and a black box controller modeling module;

[0012] The visual modeling module is used to construct the main circuit model based on the equipment parameters of the actual static VAR generator equipment, wherein the main circuit model includes at least one of a static VAR generator converter sub-model, a DC capacitor sub-model and a filter inductor sub-model;

[0013] The black box controller modeling module is used to connect the preset binary file to the virtual simulation engine for operation, generate a dynamic link library file, and construct a foreground component in the visual modeling module through the input and output interface information of the preset binary file, associate the foreground component with the dynamic link library file, and construct the black box controller model.

[0014] Optionally, the static VAR generator digital twin device further includes a digital twin model modeling module;

[0015] The digital twin model modeling module is used to connect the black box controller model to the main circuit model, and set the signal input and output connection relationship to generate a digital twin model of the static VAR generator.

[0016] Optionally, the static VAR generator digital twin device further includes a communication module, wherein the communication module includes a wireless communication interface, an RS-485 communication interface and a wired network interface;

[0017] The communication module is used to receive the measurement data transmitted by the actual static VAR generator converter controller through the wireless communication interface or the RS-485 communication interface;

[0018] The communication module is also used to transmit the simulation result to the remote terminal through the wired network interface.

[0019] Optionally, the digital twin device of the static VAR generator further includes a real-time section generation module;

[0020] The communication module is further used to send the measurement data to the real-time section generation module;

[0021] The real-time section generation module is used to receive the measurement data sent from the communication module, and write the measurement data into the digital twin model of the static VAR generator to generate the electromagnetic transient simulation initialization section, wherein the measurement data includes the port voltage of the actual static VAR generator converter, the port current of the actual static VAR generator converter and the control signal of the actual static VAR generator device.

[0022] Optionally, the static VAR generator digital twin device further includes a digital twin simulation module;

[0023] The digital twin simulation module is used to discretize the transient equations of all electrical components in the digital twin model of the static VAR generator containing the electromagnetic transient simulation initialization section using a numerical integration algorithm to obtain the Norton equivalent equation of each electrical component, construct a node matrix according to each Norton equivalent equation, solve the node matrix, obtain the simulation result, and transmit the simulation result to the communication module.

[0024] Optionally, the remote terminal is used to receive the simulation results, and monitor the real-time status of the actual static VAR generator converter according to the simulation results, simulate the internal state quantities of the actual static VAR generator converter according to the simulation results, and perform functional testing on the actual static VAR generator converter according to the simulation results.

[0025] In a second aspect, an embodiment of the present disclosure provides a static VAR generator digital twin method, which is applied to the static VAR generator digital twin system as described in the first aspect, wherein the system includes an actual static VAR generator device, a static VAR generator digital twin apparatus, and a remote terminal, wherein the actual static VAR generator device includes an actual static VAR generator converter and an actual static VAR generator converter controller, and the method includes:

[0026] Building a digital twin model of a static VAR generator based on the device parameters of the actual static VAR generator device and a preset binary file through the digital twin device of the static VAR generator;

[0027] Receiving the measurement data transmitted by the actual STATCOM converter controller through the STATCOM digital twin device, and writing the measurement data into the STATCOM digital twin model to generate an electromagnetic transient simulation initialization section;

[0028] The static VAR generator digital twin model containing the electromagnetic transient simulation initialization section is simulated by the static VAR generator digital twin device to generate simulation results, and the simulation results are transmitted to the remote terminal.

[0029] In a third aspect, a computer device is provided in an embodiment of the present disclosure, wherein the computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the static VAR generator digital twin method described in the second aspect are implemented.

[0030] In a fourth aspect, a computer-readable storage medium is provided in an embodiment of the present disclosure, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the static VAR generator digital twin method described in the second aspect are implemented.

[0031] Beneficial effects of this application:

[0032] The static VAR generator digital twin system provided in the embodiment of the present application includes an actual static VAR generator device, a static VAR generator digital twin device and a remote terminal, wherein the actual static VAR generator device includes an actual static VAR generator converter and an actual static VAR generator converter controller; the static VAR generator digital twin device is used to construct a static VAR generator digital twin model based on the device parameters and preset binary files of the actual static VAR generator device; the static VAR generator digital twin device is also used to receive the measurement data transmitted by the actual static VAR generator converter controller, and write the measurement data into the static VAR generator digital twin model to generate an electromagnetic transient simulation initialization section; the static VAR generator digital twin device is also used to simulate the static VAR generator digital twin model containing the electromagnetic transient simulation initialization section, generate simulation results, and transmit the simulation results to the remote terminal. The present application provides a refined analysis method for the control strategy research of static VAR generators and power grids, and improves the safety and stability of power grid operation.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. In each of the drawings, similar components are numbered similarly.

[0035] Figure 1 A schematic structural diagram of a static VAR generator digital twin system provided in an embodiment of the present application is shown;

[0036] Figure 2 A schematic structural diagram of another static VAR generator digital twin system provided in an embodiment of the present application is shown;

[0037] Figure 3 A flowchart of a digital twin method for a static VAR generator provided in an embodiment of the present application is shown;

[0038] Figure 4 A schematic diagram of the structure of a computer device provided in an embodiment of the present application is shown.

[0039] Specific component symbol description:

[0040] 100-digital twin system of static VAR generator; 110-actual static VAR generator equipment; 111-actual static VAR generator converter; 112-actual static VAR generator converter controller; 120-digital twin device of static VAR generator; 121-visual modeling module; 122-black box controller modeling module; 123-digital twin model modeling module; 124-communication module; 125-real-time section generation module; 126-digital twin simulation module; 130-remote terminal. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of the template are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0046] Example 1

[0047] like Figure 1 As shown, it is a structural schematic diagram of a static VAR generator digital twin system 100 in an embodiment of the present application. The static VAR generator digital twin system 100 provided in the embodiment of the present application includes an actual static VAR generator device 110, a static VAR generator digital twin apparatus 120 and a remote terminal 130. The actual static VAR generator device 110 includes an actual static VAR generator converter 111 and an actual static VAR generator converter controller 112. The static VAR generator digital twin apparatus 120 can be installed on the static VAR generator converter controller (for example, on the top).

[0048] The STATCOM digital twin device 120 is used to construct a STATCOM digital twin model based on the device parameters of the actual STATCOM device 110 and a preset binary file;

[0049] The STATCOM digital twin device 120 is also used to receive the measurement data transmitted by the actual STATCOM converter controller 112, and write the measurement data into the STATCOM digital twin model to generate an electromagnetic transient simulation initialization section;

[0050] The STATCOM digital twin device 120 is also used to simulate the STATCOM digital twin model containing the electromagnetic transient simulation initialization section, generate simulation results, and transmit the simulation results to the remote terminal 130 .

[0051] In this embodiment, if Figure 2 As shown, the digital twin model of the static VAR generator includes a main circuit model and a black box controller model, and the digital twin device 120 of the static VAR generator includes a visualization modeling module 121 and a black box controller modeling module 122.

[0052] Understandably, the visualization modeling module 121 is used to construct a main circuit model based on the device parameters of the actual STATCOM device 110 , wherein the main circuit model includes at least one of a STATCOM converter sub-model, a DC capacitor sub-model and a filter inductor sub-model.

[0053] Specifically, as an example, the equipment parameters may include rated voltage, rated capacity, converter type (such as IGBT module), DC capacitance value, filter inductance value, switching frequency, etc., determine the connection method of the static VAR generator converter, DC capacitor and filter inductance, and then create a static VAR generator converter sub-model, DC capacitor sub-model and filter inductance sub-model in the visual modeling software according to these equipment parameters and the connection method of each part.

[0054] It can be understood that the black box controller modeling module 122 is used to connect the preset binary file to the virtual simulation engine for operation, generate a dynamic link library file, and build a foreground component in the visual modeling module 121 through the input and output interface information of the preset binary file, associate the foreground component with the dynamic link library file, and build a black box controller model.

[0055] Specifically, as an example, first obtain a preset binary file (such as a .a static link library file), set up a virtual simulation engine, and confirm whether the .a static link library file is compatible with the virtual simulation engine. The virtual simulation engine needs to convert the preset binary file (static library) into a dynamic link library file, which usually involves recompiling the code and using compiler options (such as GCC's -shared) to generate a dynamic link library file. Further, determine the input and output interface information of the preset binary file, which usually includes parameter type, size and other information of each interface. Through the input and output interface information, build a foreground component in the visual modeling module 121, configure the call to the dynamic link library file, and associate the foreground component with the dynamic link library file to build a black box controller model.

[0056] In this embodiment, the STATCOM digital twin device 120 further includes a digital twin model building module 123. Understandably, the digital twin model building module 123 is used to connect the black box controller model to the main circuit model, and set the signal input and output connection relationship to generate a STATCOM digital twin model.

[0057] Specifically, the input signals of the black box controller model include measurement signals such as three-phase AC voltage, three-phase AC current, and parameters such as control mode, reactive power setting value, voltage setting value, and power factor setting value. The output signals include PWM modulation waves, high-throughput flags, low-throughput flags, and other signals.

[0058] In this embodiment, the STATCOM digital twin device 120 further includes a communication module 124 and a real-time section generation module 125 . The communication module 124 includes a wireless communication interface, an RS-485 communication interface, and a wired network interface.

[0059] It can be understood that the communication module 124 is used to receive the measurement data transmitted by the actual static VAR generator converter controller 112 through the wireless communication interface or the RS-485 communication interface, and is also used to send the measurement data to the real-time section generation module 125; the real-time section generation module 125 is used to receive the measurement data sent from the communication module 124, and write the measurement data into the digital twin model of the static VAR generator to generate an electromagnetic transient simulation initialization section.

[0060] Specifically, in this embodiment, the measurement data includes the port voltage of the actual static VAR generator converter 111, the port current of the actual static VAR generator converter 111, and the PWM control pulse signal of the actual static VAR generator device 110. The measurement data can be written into the corresponding parameters of the digital twin model of the static VAR generator in real time by writing code or script, and then the initial conditions of the electromagnetic transient simulation are set according to the measurement data and the current state of the digital twin model of the static VAR generator, and the simulation parameters are configured, such as the simulation time step, simulation duration, simulation accuracy, etc. And according to the instantaneous values ​​of all state variables in the digital twin model of the static VAR generator at a certain time t, the electromagnetic transient simulation initialization section is formed.

[0061] It should be noted that the conventional initialization method is to set the initial values ​​of all variables to 0, while the above method completes the electromagnetic transient simulation section initialization of the digital twin model of the static VAR generator by using the real-time measurement data of the actual static VAR generator converter controller 112. When performing subsequent simulations, it can be directly started from this electromagnetic transient simulation initialization section. Compared with the initialization method starting from 0, starting from the electromagnetic transient simulation initialization section is more efficient, the system is easier to reach a steady state, and the steady-state result is closer to the actual result.

[0062] In this embodiment, the STATCOM digital twin device 120 further includes a digital twin simulation module 126. Understandably, the digital twin simulation module 126 is used to discretize the transient equations of all electrical components in the STATCOM digital twin model containing the electromagnetic transient simulation initialization section using a numerical integration algorithm, obtain the Norton equivalent equation of each electrical component, construct a node matrix according to each Norton equivalent equation, solve the node matrix, obtain the simulation result, and transmit the simulation result to the communication module 124.

[0063] Specifically, the electromagnetic transient simulation component in the digital twin model of the static VAR generator is used to start the electromagnetic transient simulation process according to the initial conditions and electromagnetic transient simulation parameters. In the electromagnetic transient simulation process, the transient equations of all electrical components in the digital twin model of the static VAR generator containing the electromagnetic transient simulation initialization section are discretized using a numerical integration algorithm to obtain the Norton equivalent equations of each electrical component, and a node matrix is ​​constructed according to each Norton equivalent equation, and the node matrix is ​​solved to obtain a simulation result that is highly consistent with the actual static VAR generator converter 111 operating state, including dynamic change data of key parameters such as voltage, current, and power factor, to achieve high-precision simulation of the internal operating state of the actual static VAR generator converter 111, to achieve high-precision mirror simulation of the actual static VAR generator converter 111, and to simulate the complex state change mechanism and dynamic response characteristics of the actual static VAR generator device 110 in real time.

[0064] In this embodiment, the communication module 124 is also used to transmit the simulation results to the remote terminal 130 through a wired network interface.

[0065] In this embodiment, the remote terminal 130 is used to receive simulation results, and monitor the real-time status of the actual static VAR generator converter 111 according to the simulation results, simulate the internal state quantity of the actual static VAR generator converter 111 according to the simulation results, and perform functional testing on the actual static VAR generator converter 111 according to the simulation results.

[0066] Specifically, the internal state quantity may include the STATCOM converter valve arm current signal, PWM control pulse signal, high and low voltage ride-through mark, etc.; the functional test may include high and low voltage ride-through function test, constant reactive power control function test, load compensation control function test, constant voltage control function test, constant power factor control function test, etc. The relevant staff can also conduct further analysis and application by viewing the simulation results on the remote terminal 130, such as short circuit fault analysis and converter fault analysis. Compared with the traditional STATCOM digital twin device that only displays the power and inverter port voltage and current signals, the STATCOM digital twin device of the present application can control more comprehensive monitoring information in real time, realize refined operation and maintenance, and provide refined analysis means for the control strategy research of STATCOM and power grid, thereby improving the safety and stability of power grid operation.

[0067] The STATCOM digital twin system 100 provided in the embodiment of the present application provides a refined analysis method for the control strategy research of the STATCOM and the power grid, thereby improving the safety and stability of the power grid operation.

[0068] Example 2

[0069] like Figure 3 As shown, it is a flow chart of a static VAR generator digital twin method in an embodiment of the present application. The static VAR generator digital twin method provided in the embodiment of the present application is applied to a static VAR generator digital twin system 100 as in Example 1. The system includes an actual static VAR generator device 110, a static VAR generator digital twin apparatus 120 and a remote terminal 130. The actual static VAR generator device 110 includes an actual static VAR generator converter 111 and an actual static VAR generator converter controller 112. Specifically, the following steps are included:

[0070] Step S110: constructing a digital twin model of the static VAR generator based on the equipment parameters of the actual static VAR generator equipment and a preset binary file through a digital twin device of the static VAR generator.

[0071] Step S120: receiving the measurement data transmitted by the actual STATCOM converter controller through the STATCOM digital twin device, and writing the measurement data into the STATCOM digital twin model to generate an electromagnetic transient simulation initialization section.

[0072] Step S130, simulating the digital twin model of the static VAR generator containing the electromagnetic transient simulation initialization section through the digital twin device of the static VAR generator, generating simulation results, and transmitting the simulation results to the remote terminal.

[0073] The digital twin method of the static VAR generator provided in the embodiment of the present application provides a refined analysis method for the control strategy research of the static VAR generator and the power grid, thereby improving the safety and stability of the power grid operation.

[0074] Example 3

[0075] The present application also provides a computer device. Figure 4 , Figure 4 This is a basic structural block diagram of the computer device in this embodiment.

[0076] The computer device 4 includes a memory 41, a processor 42, and a network interface 43 that are interconnected through a system bus. It should be noted that the figure only shows a computer device 4 with a memory 41, a processor 42, and a network interface 43, but it should be understood that it is not required to implement all the components shown, and more or fewer components can be implemented instead. Among them, those skilled in the art can understand that the computer device here is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to microprocessors, application specific integrated circuits (ASIC), programmable gate arrays (FPGA), digital signal processors (DSP), embedded devices, etc.

[0077] The computer device may be a computing device such as a desktop computer, a notebook, a PDA, a cloud server, etc. The computer device may interact with the user through a keyboard, a mouse, a remote controller, a touch pad, or a voice control device.

[0078] The memory 41 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, hard disk, multimedia card, card-type memory (for example, SD or D slot compatibility test memory, etc.), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, disk, optical disk, etc. In some embodiments, the memory 41 can be an internal storage unit of the computer device 4, such as a hard disk or memory of the computer device 4. In other embodiments, the memory 41 can also be an external storage device of the computer device 4, such as a plug-in hard disk equipped on the computer device 4, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. Of course, the memory 41 can also include both the internal storage unit of the computer device 4 and its external storage device. In this embodiment, the memory 41 is generally used to store the operating system and various application software installed on the computer device 4, such as computer-readable instructions of the slot compatibility test method, etc. In addition, the memory 41 can also be used to temporarily store various types of data that have been output or are to be output.

[0079] The processor 42 may be a central processing unit (CPU), a controller, a microcontroller, a microprocessor, or other static VAR generator digital twin chip in some embodiments. The processor 42 is generally used to control the overall operation of the computer device 4. In this embodiment, the processor 42 is used to run computer-readable instructions or process data stored in the memory 41, such as computer-readable instructions for running the slot compatibility test method.

[0080] The network interface 43 may include a wireless network interface or a wired network interface. The network interface 43 is generally used to establish a communication connection between the computer device 4 and other electronic devices.

[0081] The computer device provided in this embodiment can execute the above-mentioned static VAR generator digital twin method. Here, the static VAR generator digital twin method can be the static VAR generator digital twin method of each of the above-mentioned embodiments.

[0082] Example 4

[0083] This embodiment also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the static VAR generator digital twin method in the embodiment are implemented.

[0084] In this embodiment, the computer-readable storage medium includes flash memory, hard disk, multimedia card, card-type memory (for example, SD or DX memory, etc.), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, disk, optical disk, etc. In some embodiments, the computer-readable storage medium can be an internal storage unit of a computer device, such as a hard disk or memory of the computer device. In other embodiments, the computer-readable storage medium can also be an external storage device of a computer device, such as a plug-in hard disk equipped on the computer device, a smart memory card (Smart Media Card, referred to as SMC), a secure digital (Secure Digital, referred to as SD) card, a flash card, etc. Of course, the computer-readable storage medium can also include both the internal storage unit of the computer device and its external storage device. In this embodiment, the computer-readable storage medium is generally used to store an operating system and various application software installed on the computer device. In addition, the computer-readable storage medium can also be used to temporarily store various types of data that have been output or are to be output.

[0085] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and structure diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in an alternative implementation, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the structure diagram and / or the flow chart, and the combination of boxes in the structure diagram and / or the flow chart, can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0086] In addition, the functional modules or units in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0087] If the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or partly contributed to the prior art or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium can be a non-volatile storage medium or a volatile storage medium. For example, the storage medium can be: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes.

[0088] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A digital twin system of a static VAR generator, characterized in that: The system includes an actual static VAR generator device, a static VAR generator digital twin device and a remote terminal, wherein the actual static VAR generator device includes an actual static VAR generator converter and an actual static VAR generator converter controller; The STATCOM digital twin device is used to construct a STATCOM digital twin model based on the device parameters of the actual STATCOM device and a preset binary file; The STATCOM digital twin device is further used to receive measurement data transmitted by the actual STATCOM converter controller, and write the measurement data into the STATCOM digital twin model to generate an electromagnetic transient simulation initialization section; The static VAR generator digital twin device is also used to simulate the static VAR generator digital twin model containing the electromagnetic transient simulation initialization section, generate simulation results, and transmit the simulation results to the remote terminal.

2. The digital twin system of a static VAR generator according to claim 1, characterized in that: The digital twin model of the static VAR generator includes a main circuit model and a black box controller model, and the digital twin device of the static VAR generator includes a visualization modeling module and a black box controller modeling module; The visual modeling module is used to construct the main circuit model based on the equipment parameters of the actual static VAR generator equipment, wherein the main circuit model includes at least one of a static VAR generator converter sub-model, a DC capacitor sub-model and a filter inductor sub-model; The black box controller modeling module is used to connect the preset binary file to the virtual simulation engine for operation, generate a dynamic link library file, and construct a foreground component in the visual modeling module through the input and output interface information of the preset binary file, associate the foreground component with the dynamic link library file, and construct the black box controller model.

3. The digital twin system of the static VAR generator according to claim 2, characterized in that: The digital twin device of the static VAR generator also includes a digital twin model modeling module; The digital twin model modeling module is used to connect the black box controller model to the main circuit model, and set the signal input and output connection relationship to generate a digital twin model of the static VAR generator.

4. The digital twin system of a static VAR generator according to claim 1, characterized in that: The static VAR generator digital twin device also includes a communication module, which includes a wireless communication interface, an RS-485 communication interface and a wired network interface; The communication module is used to receive the measurement data transmitted by the actual static VAR generator converter controller through the wireless communication interface or the RS-485 communication interface; The communication module is also used to transmit the simulation result to the remote terminal through the wired network interface.

5. The digital twin system of the static VAR generator according to claim 4, characterized in that: The digital twin device of the static VAR generator also includes a real-time section generation module; The communication module is further used to send the measurement data to the real-time section generation module; The real-time section generation module is used to receive the measurement data sent from the communication module, and write the measurement data into the digital twin model of the static VAR generator to generate the electromagnetic transient simulation initialization section, wherein the measurement data includes the port voltage of the actual static VAR generator converter, the port current of the actual static VAR generator converter and the control signal of the actual static VAR generator device.

6. The digital twin system of the static VAR generator according to claim 5, characterized in that: The digital twin device of the static VAR generator also includes a digital twin simulation module; The digital twin simulation module is used to discretize the transient equations of all electrical components in the digital twin model of the static VAR generator containing the electromagnetic transient simulation initialization section using a numerical integration algorithm to obtain the Norton equivalent equation of each electrical component, construct a node matrix according to each Norton equivalent equation, solve the node matrix, obtain the simulation result, and transmit the simulation result to the communication module.

7. The digital twin system of a static VAR generator according to claim 1, characterized in that: The remote terminal is used to receive the simulation results, and monitor the real-time status of the actual static VAR generator converter according to the simulation results, simulate the internal state quantity of the actual static VAR generator converter according to the simulation results, and perform functional testing on the actual static VAR generator converter according to the simulation results.

8. A digital twin method for a static VAR generator, characterized in that: Applied to the STATCOM digital twin system according to any one of claims 1 to 7, the system comprises an actual STATCOM device, a STATCOM digital twin apparatus and a remote terminal, the actual STATCOM device comprises an actual STATCOM converter and an actual STATCOM converter controller, the method comprises: Building a digital twin model of a static VAR generator based on the device parameters of the actual static VAR generator device and a preset binary file through the digital twin device of the static VAR generator; Receiving the measurement data transmitted by the actual STATCOM converter controller through the STATCOM digital twin device, and writing the measurement data into the STATCOM digital twin model to generate an electromagnetic transient simulation initialization section; The static VAR generator digital twin model containing the electromagnetic transient simulation initialization section is simulated by the static VAR generator digital twin device to generate simulation results, and the simulation results are transmitted to the remote terminal.

9. A computer device, characterized in that: The invention comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the static VAR generator digital twin method as claimed in claim 8 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the static VAR generator digital twin method described in claim 8 are implemented.

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