CN112947110A - Electromagnetic transient real-time simulation system and method for power system - Google Patents
Electromagnetic transient real-time simulation system and method for power system Download PDFInfo
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Abstract
The application relates to an electromagnetic transient real-time simulation system of a power system, which comprises a simulation control device, a simulation calculation service device, an interface device and a power device; the simulation control equipment is connected with the simulation calculation service equipment; the simulation computing service equipment is connected with the interface equipment; the interface device is connected with the power device. According to the simulation system, the simulation process is controlled and calculated respectively through the simulation control equipment and the simulation calculation service equipment, and the interface equipment is adopted to be in butt joint with the power equipment, so that the use of the interface equipment can be effectively reduced when the simulation platform is built, and the parallelism of a large-scale computer is realized without adding extra hardware interface equipment, so that the whole simulation system is more convenient in the building process and is convenient for a user to use.
Description
Technical Field
The present application relates to the field of power system technologies, and in particular, to a system and a method for electromagnetic transient real-time simulation of a power system.
Background
With the improvement of the voltage grade of a power grid, the increase of the capacity and the continuous development of the high-voltage direct-current transmission technology and the power electronic technology, the transient process generated by short circuit is more severe, the influence of the transient component on the protection action is larger and larger, the dynamic process of the power system is analyzed and simulated thoroughly, comprehensively, accurately and quickly, and the method is an important basis for ensuring the safe and stable operation of the power system. The electromagnetic transient simulation has the characteristics of accurate phenomenon depiction, wide application, good numerical stability and the like, covers multiple aspects of planning, design, operation, scientific research and the like of the power system, and is a necessary tool for understanding the transient complex behavior of the power system.
However, the traditional electromagnetic transient real-time simulation platform is composed of large computers in parallel, the platform is complex to construct, time and labor are wasted when the platform is deployed, and the platform is inconvenient for electric power practitioners to use.
Disclosure of Invention
Therefore, it is necessary to provide an electromagnetic transient real-time simulation system and method for a power system, which are convenient to use, for solving the problems of complex construction and difficult deployment of an electromagnetic transient real-time simulation platform.
An electromagnetic transient real-time simulation system of a power system, the simulation system comprising: the simulation control device, the simulation calculation service device, the interface device and the power device; the simulation control equipment is connected with the simulation calculation service equipment and used for sending a service request data packet to the simulation calculation service equipment; the simulation computing service equipment is connected with the interface equipment and is used for transmitting a sampling message to the interface equipment at a preset sampling frequency according to the service request data packet; the interface equipment is connected with the power equipment and used for transmitting corresponding transient and steady voltage and current to the power equipment according to the sampling message; the interface equipment is also used for acquiring switching value information of the power equipment when transmitting corresponding transient and steady voltage and current to the power equipment, converting the switching value information into a message signal, transmitting the message signal to the simulation calculation service equipment, and performing electromagnetic transient simulation calculation by the simulation calculation service equipment according to the message signal to obtain a simulation result and transmitting the simulation result to the simulation control equipment.
According to the simulation system, the simulation process is controlled and calculated respectively through the simulation control equipment and the simulation calculation service equipment, and the interface equipment is adopted to be in butt joint with the power equipment, so that the use of the interface equipment can be effectively reduced when the simulation platform is built, and the parallelism of a large-scale computer is realized without adding extra hardware interface equipment, so that the whole simulation system is more convenient in the building process and is convenient for a user to use.
In one embodiment, the power device comprises a primary device and a secondary device, wherein the primary device is connected with the interface device, the primary device is used for sending the switching value information to the interface device, the secondary device is connected with the interface device, and the secondary device is used for receiving the transient and steady voltage and current transmitted by the interface device.
In one embodiment, the secondary device is an intelligent secondary device, the interface device includes an extension device, a merging unit, a switch device and an intelligent terminal, the simulation computation service device is connected with the extension device, the extension device is connected with the merging unit, the merging unit is connected with the secondary device, the switch device is connected with the secondary device, the intelligent terminal and the simulation computation service device, and the primary device is connected with the switch device through the intelligent terminal.
In one embodiment, the switch device is a Goose web switch.
In one embodiment, the simulation system further includes a process layer device, and the merging unit and the switch device are connected to the secondary device through the process layer device.
In one embodiment, the secondary device is a non-intelligent secondary device, the interface device includes a digital-to-analog conversion device, a real-time power amplification device and a switching value conversion device, the simulation calculation service device is connected with the digital-to-analog conversion device, the digital-to-analog conversion device is connected with the real-time power amplification device, the real-time power amplification device is connected with the secondary device, the secondary device is connected with the primary device, the primary device is connected with the switching value conversion device, and the switching value conversion device is connected with the simulation calculation service device.
In one embodiment, the simulation system further comprises a secondary circuit, the real-time power amplifying device is connected with the secondary equipment through the secondary circuit, and the primary equipment is connected with the secondary equipment through the secondary circuit.
In one embodiment, the emulated computing service device and the interface device communicate data using an IEC61850 communication protocol.
In one embodiment, the simulation system further comprises an interaction device, and the interaction device is connected with the simulation control equipment.
An electromagnetic transient real-time simulation method of a power system comprises the following steps:
receiving a service request data packet sent by simulation control equipment; transmitting a sampling message to the interface equipment at a preset sampling frequency according to the service request data packet, and acquiring a message signal fed back by the interface equipment; the sampling message is used as interface equipment to transmit corresponding transient and steady voltage and current to the power equipment; the message signal is obtained by acquiring switching value information of the power equipment and converting the switching value information when the interface equipment transmits corresponding transient and steady voltage and current to the power equipment; and performing electromagnetic transient simulation calculation according to the message signal to obtain a simulation result and transmitting the simulation result to the simulation control equipment.
According to the method, the simulation calculation service equipment receives the service request data packet of the simulation control equipment, transmits the sampling message to the interface equipment to acquire the message signal fed back from the interface equipment, and then performs electromagnetic transient simulation calculation according to the message signal, so that electromagnetic transient in the power system can be simulated quickly and conveniently, and the use by a user is facilitated.
Drawings
FIG. 1 is a block diagram of an electromagnetic transient real-time simulation system of a power system in an embodiment;
FIG. 2 is a block diagram of an electromagnetic transient real-time simulation system of a power system in an embodiment;
FIG. 3 is a block diagram of an electromagnetic transient real-time simulation system of an embodiment of a power system;
FIG. 4 is a schematic flow chart illustrating an electromagnetic transient real-time simulation method of an embodiment of a power system;
FIG. 5 is a block diagram of the overall software architecture of the emulation system in one embodiment;
FIG. 6 is a block diagram of a communication module of the simulation control device in an embodiment;
FIG. 7 is a block diagram of a communication interface module of the emulated computing service device in an embodiment;
FIG. 8 is a block diagram of a communication module framework for emulating a computing service device and an interface device in one embodiment;
FIG. 9 is a flowchart illustrating a simulation calculation of a real-time component in a simulation model according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, there is provided an electromagnetic transient real-time simulation system of a power system, the simulation system comprising a simulation control device 100, a simulation computing service device 200, an interface device 200, and a power device 400. The simulation control device 100 is connected to the simulation calculation service device 200, and is configured to send a service request packet to the simulation calculation service device 200. The emulated computing service device 200 is connected to the interface device 200, and the emulated computing service device 200 is configured to transmit the sampling packet to the interface device 200 at a preset sampling frequency according to the service request packet. The interface device 200 is connected to the power device 400, and the interface device 200 is configured to transmit a corresponding transient and steady voltage and current to the power device 400 according to the sampling message; the interface device 200 is further configured to obtain switching value information of the power device 400 when transmitting corresponding transient and steady-state voltage and current to the power device 400, convert the switching value information into a message signal, and transmit the message signal to the simulation computing service device 200. The simulation computation service device 200 performs electromagnetic transient simulation computation according to the message signal, obtains a simulation result, and transmits the simulation result to the simulation control device 100.
The simulation control device 100 may use a portable computer or a common workstation as a hardware platform, and install a corresponding operating system as a software operating platform (for example, an operating system such as Windows7 or Windows 10). The simulation computing service device 200 may use a computer personal computer or a multi-core high-master-frequency workstation as a hardware platform, and use a Linux operating system as a software operating system. The simulation control device 100 and the simulation computing service device 200 are connected through a network device (e.g., an ethernet network device, etc.), and may use a preset internal communication protocol for data communication. The interface device 200 may be a digital-to-analog conversion device 321, a real-time power amplification device 322, a switching value conversion device 323, a circuit breaker, a knife switch, an intelligent terminal 314, and the like. The simulation computing service device 200 and the interface device 200 may be connected by optical fiber, and may perform data communication by using an IEC61850 communication protocol. The power equipment 400 may be a measurement and control device, a protection device, a safety device, a wave recorder, and the like in a substation power system, and the power equipment 400 and the interface device 200 may be connected through a relevant power line loop or a virtual terminal, and the like.
When the simulation system works, taking a portable computer as the simulation control device 100 as an example, the simulation control device 100 may be connected to an interactive device (the interactive device includes a display screen and a keyboard), the simulation control device 100 is mainly used for human-computer interaction, a user may input a corresponding control instruction through the simulation control device 100, the simulation control device 100 sends a corresponding service request data packet (e.g., electromagnetic transient real-time simulation, etc.) to the simulation computing service device 200 according to the corresponding control instruction, the simulation computing service device 200 transmits a transient steady-state voltage and current to the interface device 200 through a SV (Sampled Value) message format at a preset sampling frequency according to the service request data packet, for example, transmits a sampling message to the interface device 200 by using an IEC61850 communication protocol, the interface device 200 transmits a corresponding voltage and current to the power device 400 through a power line loop or a virtual terminal according to the sampling message, so as to obtain the switching value information of the power device 400, the interface device 200 converts the switching value information into a message signal, transmits the message signal to the simulation computation service device 200, performs electromagnetic transient computation through the simulation computation service device 200, and finally sends a corresponding response message to the simulation control device 100, thereby completing the simulation process. The preset sampling frequency may be a sampling frequency not lower than 4K, and the electromagnetic Transient calculation is performed by performing implicit integral calculation using conventional simulation software, such as an Electro-Magnetic Transient Program (EMTP), which will be described in detail later and will not be described herein again.
According to the simulation system, the simulation process is controlled and calculated through the simulation control device 100 and the simulation calculation service device 200 respectively, and the interface device 300 is adopted to be in butt joint with the power device 400, so that the use of the interface device can be effectively reduced when the simulation platform is built, and the parallelism of a large-scale computer is realized without adding extra hardware interface devices, so that the whole simulation system is more convenient to use in the building process and is convenient for users to use. .
In one embodiment, the power device 400 includes a primary device 402 and a secondary device 401, the primary device 402 is connected with the interface device 200, the primary device 402 is used for transmitting the switching value information to the interface device 200, the secondary device 401 is connected with the interface device 200, and the secondary device 401 is used for receiving the transient-steady-state voltage and current delivered by the interface device 200. The primary equipment 402 includes a breaker, a knife switch, and the like, and may be, for example, a simulated breaker or a real breaker and a simulated knife switch or a real knife switch. The secondary device 401 includes a digital-to-analog conversion device 321, a power amplification circuit, a switching value conversion device 323, an intelligent terminal 314, and the like.
Further, in an embodiment, as shown in fig. 2, the secondary device 401 may be an intelligent secondary device 401, the interface device 200 includes an extension unit 311, a merging unit 312, a switch device 313 and an intelligent terminal 314, the emulated computing service device 200 is connected to the extension unit 311, the extension unit 311 is connected to the merging unit 312, the merging unit 312 is connected to the secondary device 401, the switch device 313 is connected to the secondary device 401, the intelligent terminal 314 and the emulated computing service device 200, and the primary device 402 is connected to the switch device 313 through the intelligent terminal 314. The simulation computing service device 200 is a computer, and has a limited PCIE (peripheral component interconnect express, high speed serial computer expansion bus standard) expansion slot, and the sampling packet output by the simulation computing service device 200 is mirror-configured by using the expansion device 311, and then is expanded to the merging unit 312 (the merging unit 312 includes an interval merging unit and a bus merging unit) in a virtual terminal pulling manner, and then is transmitted to the secondary device 401. The switch device 313 acquires the switching amount information (including the breaker position information and the breaker position information) in the primary device 402 (including the simulated/actual breaker and the simulated/actual breaker) through the smart terminal 314, and then transmits the switching amount information to the simulation calculation service device 200. Further, in an embodiment, as shown in fig. 2, the simulation system further includes a process layer device 500, wherein the merging unit 312 and the switch device 313 are both connected to the secondary device 401 through the process layer device 500. It should be noted that the intelligent secondary device 401 refers to a secondary device 401 having a networked information sharing feature, and data information transmission is not required to be achieved through a conventional power cable or the like, that is, an optical fiber connection may be used between the simulation computing service device 200 and the expansion device 311, an optical fiber connection may be used between the expansion device 311 and the merging unit 312, an optical fiber connection may be used between the merging unit 312 and the process layer, data transmission may be performed between the process layer and the secondary device 401 through a network connection, an optical fiber connection may be used between the switch device 313 and the simulation computing service device 200, an optical fiber connection may be used between the intelligent terminal 314 and the switch device 313, and a hard cable connection is used between the intelligent terminal 314 and the primary device 402 (including an analog/actual circuit breaker and an analog/actual disconnecting link). In one embodiment, the switch device 313 is a Goose network switch, and the switch amount information can be converted into a message signal in the form of a Goose message through the Goose network switch, so that the information transmission rate is increased.
In one embodiment, as shown in fig. 3, the secondary device 401 may be a non-intelligent secondary device 401, the interface device 200 includes a digital-to-analog conversion device 321, a real-time power amplifying device 322, and a switching value conversion device 323, the emulated computing service device 200 is connected to the digital-to-analog conversion device 321, the digital-to-analog conversion device 321 is connected to the real-time power amplifying device 322, the real-time power amplifying device 322 is connected to the secondary device 401, the secondary device 401 is connected to the primary device 402, the primary device 402 is connected to the switching value conversion device 323, and the switching value conversion device 323 is connected to the emulated computing service device 200. The digital-to-analog conversion device 321 is configured to convert the sampling packet transmitted by the simulation computing service device 200 into an analog signal (for example, a voltage signal of 0-10 KV), transmit the analog signal to the real-time power amplification device 322 through a power cable, perform gain amplification, and finally access the analog signal to the secondary device 401, and the switching value conversion device 323 is connected to the primary device 402 (including an analog/actual circuit breaker and an analog/actual disconnecting link) through a hard cable, collects switching value information, and transmits the switching value information to the simulation computing service computing device. Further, in an embodiment, as shown in fig. 3, the simulation system further includes a secondary circuit 600, the real-time power amplifying device 322 is connected to the secondary device 401 through the secondary circuit 600, and the primary device 402 is connected to the secondary device 401 through the secondary circuit 600. It should be noted that the non-intelligent secondary device 401 refers to a conventional secondary device 401, which does not have a networked information sharing feature.
In one embodiment, as shown in fig. 4, there is provided a method for electromagnetic transient real-time simulation of a power system, comprising the steps of:
s100, receiving a service request data packet sent by the simulation control equipment. Specifically, the simulation computing service device is connected with the simulation control device through an optical fiber or an ethernet, and the service request data includes an electromagnetic transient real-time simulation request.
S200, according to the service request data packet, transmitting a sampling message to the interface equipment at a preset sampling frequency, and acquiring a message signal fed back by the interface equipment. The sampling message is used as interface equipment to transmit corresponding transient and steady voltage and current to the power equipment; the message signal is obtained by acquiring and converting switching value information of the power equipment when the interface equipment transmits corresponding transient and steady voltage and current to the power equipment.
Specifically, the preset sampling frequency is not lower than 4K, after receiving a service data request data packet, the simulation computation service device transmits transient steady-state voltage and current data to the interface device at the sampling frequency not lower than 4K through a sampling message format, the interface device transmits corresponding transient steady-state voltage and current to the power device according to the sampling message, and simultaneously, the interface device collects switching value information of the power device, converts the switching value information into a message signal, and feeds the message signal back to the simulation computation service device. It should be noted that, in other embodiments, the emulated computing service device and the sampling message format may be an SV (Sampled Value) message format.
S300, performing electromagnetic transient simulation calculation according to the message signal to obtain a simulation result and transmitting the simulation result to the simulation control equipment. After receiving the message signal fed back by the interface device, the simulation computation service device performs electromagnetic Transient simulation computation, where the electromagnetic Transient simulation computation may be performed by using existing conventional simulation software, such as an Electro-Magnetic Transient Program (EMTP), for example.
According to the method, the simulation calculation service equipment receives the service request data packet of the simulation control equipment, transmits the sampling message to the interface equipment to acquire the message signal fed back from the interface equipment, and then performs electromagnetic transient simulation calculation according to the message signal, so that electromagnetic transient in the power system can be simulated quickly and conveniently, and the use by a user is facilitated.
In one embodiment, for sufficient explanation of the present application, reference is made to fig. 5 to 9, wherein fig. 5 shows a software overall structure of an emulation system, which can be divided into a presentation layer, an emulation layer, an interface layer, and a device layer from the software structure. The presentation layer is deployed on the simulation control equipment and is mainly responsible for man-machine interaction, and can realize graph drawing, model editing, fault setting, parameter setting, simulation process control, real-time waveform display, recorded wave calling and the like. The simulation layer is deployed on simulation computing service equipment, mainly performs electromagnetic transient real-time simulation service, and mainly comprises three modules, namely electromagnetic transient calculation, SV (Sampled Value) sampling message sending, and goose (Generic Object Oriented Substation Event, transformer Substation time facing a general Object) signal processing, wherein the electromagnetic transient calculation is based on an EMTP algorithm, node voltage and current at the current time and the historical time are calculated, and a packaging function packages the node voltage and current to form an IEC61850-9-2 message and then directly sends the SV message through network card driving by using an SV sending thread in a system calling mode; in the aspect of goose receiving, the simulated goose signal processing process adopts a zero-copy-based message receiving mechanism, adopts a zero-copy technology and a memory address mapping technology to simplify a message receiving flow, removes unnecessary memory copy and system call overhead, and controls goose message receiving delay at a micro-level. The interface layer is mainly used for expanding SV sampling message output of the simulation system or performing digital-to-analog conversion and switching value conversion on signals. The equipment layer is an intelligent or conventional high-low voltage protection device, a measurement and control device, a safety and stability device, a spare power automatic switching device, a fault recorder, a simulation or real circuit breaker, a simulation or real disconnecting link and other equipment, and forms a real-time electromagnetic transient simulation system together with interface equipment and digital electromagnetic transient simulation software.
Referring to fig. 6, fig. 6 shows a communication module structure block of the simulation control device, which includes simulation control, remote control and remote tuning, model receiving, fault setting, parameter modification, real-time waveform, value change, wave recording and model downloading, where the communication message transmission adopts an interface provided by a winpc, the file transmission uses an interface provided by a QTsocket, the simulation control device packages the communication message data into message data by proposing different service requests and sends the message data to the simulation computation service device, and the simulation computation service device completes a relevant response.
Referring to fig. 7, fig. 7 shows a communication interface module of the simulation computing service device, which implements control of the simulation control device on the simulation process and return of the simulation result, where the module is loaded first when the simulation computing service device runs, the module analyzes a message sent by the simulation control device and updates a control area and a data area of the shared memory according to different message types, and sends a data change of the data area and the control area to the simulation control device, thereby completing data update of the simulation control device. In the aspect of simulation computing service equipment, the system mainly comprises three modules, namely an electromagnetic transient computing module, an SV sampling message sending module and a goose message signal processing module, wherein the SV sampling message sending module and the goose message signal receiving and sending module are respectively a thread, and the SV sampling message sending module and the goose message signal receiving and sending module form a real-time communication control module together.
Referring to fig. 8, fig. 8 shows a frame structure of a communication module when the emulated computing service device communicates with the interface device, and the communication module is used to implement real-time communication between the emulated computing service device and the interface device, where the communication protocol may adopt an IEC61850 communication protocol.
Referring to fig. 9, fig. 9 shows a workflow diagram of simulation calculation of real-time components in a simulation model, electromagnetic transient calculation is performed through a transient component model, and a main algorithm is implicit integral calculation. Specifically, the main task of electromagnetic transient analysis is to solve a differential algebraic equation system describing the dynamic characteristics of the system at discrete time points, the simulation system adopts time domain analysis to solve the differential equation of the system for analyzing and calculating transient overvoltage and overcurrent which may occur after faults or operations, generating a power system network structure diagram according to a power grid transformer substation main wiring diagram, equivalently simplifying the power system network structure diagram, generating a relevant mathematical model of each element according to the distribution parameter characteristics, the frequency characteristics and the nonlinear characteristics of part of elements to obtain an equation of each node voltage and branch current, at the time of fault or operation, modifying parameter matrix, adopting numerical integration calculation to obtain instantaneous values of node voltage and branch circuit current in several periods before and after fault or operation, and parameters such as the maximum value of the fault current, the direct-current component of the fault current, the decay period and the like are displayed on a graphical interface continuously to obtain a fault waveform file. Except for a power supply, other power system equipment models can be represented by equivalent circuits of RLC combination, and the electromagnetic transient calculation process is to solve voltage and current differential equations of the equivalent circuits by a trapezoidal integration method so as to obtain time domain solutions of the voltage and the current. Generating an association model and a parameter matrix according to the equivalent circuit and coupling relation of each element, calculating a historical equivalent current source of the association model of each element from the time point t equal to 0s, and generating a historical current matrix, a historical node voltage matrix and an injection current matrix of each node. There are two sources for the initial data for each element: the method comprises the steps of firstly, starting calculation from a zero state according to power supply characteristics, secondly, performing steady state calculation according to steady state models of all elements, taking a calculation result as an initial value, calculating a time domain solution before disturbance according to an initial parameter matrix, modifying disturbance branch parameters after the disturbance occurs, calculating time domain solutions of all physical quantities in a plurality of periods after the disturbance occurs, and selecting a proper method to control the generation of numerical oscillation and fully consider the inter-phase coupling relationship in the calculation process.
The simulation system in the application adopts a fully-graphical user operation mode, the electromagnetic transient simulation part adopts an EMTP algorithm, an adjoint model is used as a dynamic element based on a trapezoidal integral rule, an equation is established by using a node method, an algebraic equation is solved by using methods such as a sparse matrix and an LU factorization method, the simulation step length is defaulted to be 50 mu s and can also be specified by a user, and the simulation step length is kept unchanged in the whole simulation. The switch is open when disconnected; the switch is short-circuited when turned on, merging the two associated nodes into one. The simulation system can set single, multiple faults and developmental faults, can be used for researching the transient problems of operation (switching on and switching off), resonance transient, fault transient, control system (reclosing) transient and the like of the power system, and has the characteristics of low access, low cost, easiness in operation and maintenance and the like; and various types of faults of equipment such as buses, lines, transformers and the like can be simulated, such as single-phase grounding, two-phase interphase, three-phase grounding or short circuit and the like, and the influence of factors such as grounding resistance, action time, recovery time and the like on various protection action behaviors can be simulated. Based on the protection function test, the protection constant value verification, the accident inversion and other works can be carried out; the phenomena of line transient overtaking and the like can be researched; research and study can be carried out on the influence of the problems of no-load switching-on, excitation inrush current and the like on the protection of the transformer; the method can simulate the inside and outside faults of various types of equipment so as to check the reliability and the selectivity of the protection function; because the calculation of the protection setting value depends on short-circuit calculation, the short-circuit calculation is set according to the short-circuit calculation result, and the transient characteristic of current equipment which is often ignored by the short-circuit calculation causes that the protection device cannot have good reliability and selectivity when in actual fault, the protection setting value can be verified and protected, and the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An electromagnetic transient real-time simulation system for an electrical power system, said simulation system comprising: the simulation control device, the simulation calculation service device, the interface device and the power device;
the simulation control equipment is connected with the simulation calculation service equipment and used for sending a service request data packet to the simulation calculation service equipment;
the simulation computing service equipment is connected with the interface equipment and is used for transmitting a sampling message to the interface equipment at a preset sampling frequency according to the service request data packet;
the interface equipment is connected with the power equipment and used for transmitting corresponding transient and steady voltage and current to the power equipment according to the sampling message;
the interface device is further configured to acquire switching value information of the electrical equipment when transmitting corresponding transient and steady-state voltage and current to the electrical equipment, convert the switching value information into a message signal, transmit the message signal to the simulation computation service device, and the simulation computation service device performs electromagnetic transient simulation computation according to the message signal to obtain a simulation result and transmit the simulation result to the simulation control device.
2. The simulation system according to claim 1, wherein the electric power device includes a primary device connected to the interface device, the primary device being configured to transmit the switching amount information to the interface device, and a secondary device connected to the interface device, the secondary device being configured to receive a transient-steady-state voltage current delivered by the interface device.
3. The simulation system according to claim 2, wherein the secondary device is an intelligent secondary device, the interface device includes an extension device, a merging unit, a switch device, and an intelligent terminal, the simulation computing service device is connected to the extension device, the extension device is connected to the merging unit, the merging unit is connected to the secondary device, the switch device is connected to the secondary device, the intelligent terminal, and the simulation computing service device, and the primary device is connected to the switch device through the intelligent terminal.
4. The emulation system of claim 3, wherein the switch device is a Goose mesh switch.
5. The simulation system of claim 3, further comprising a process layer device, wherein the merging unit and the switch device are connected to the secondary device through the process layer device.
6. The simulation system according to claim 2, wherein the secondary device is a non-intelligent secondary device, the interface device includes a digital-to-analog conversion device, a real-time power amplification device, and a switching value conversion device, the simulation computing service device is connected to the digital-to-analog conversion device, the digital-to-analog conversion device is connected to the real-time power amplification device, the real-time power amplification device is connected to the secondary device, the secondary device is connected to the primary device, the primary device is connected to the switching value conversion device, and the switching value conversion device is connected to the simulation computing service device.
7. The simulation system of claim 6, further comprising a secondary loop, wherein the real-time power amplifier is connected to the secondary device through the secondary loop, and wherein the primary device is connected to the secondary device through the secondary loop.
8. The simulation system of claim 1, wherein the simulated computing service devices are in data communication with the interface devices using an IEC61850 communication protocol.
9. The simulation system of claim 1, further comprising an interaction device, wherein the interaction device is connected to the simulation control apparatus.
10. An electromagnetic transient real-time simulation method of a power system is characterized by comprising the following steps:
receiving a service request data packet sent by simulation control equipment;
transmitting a sampling message to interface equipment at a preset sampling frequency according to the service request data packet, and acquiring a message signal fed back by the interface equipment; the sampling message is used for the interface equipment to transmit corresponding transient and steady voltage and current to the power equipment; the message signal is obtained by acquiring and converting switching value information of the power equipment when the interface equipment transmits corresponding transient and steady voltage and current to the power equipment;
and performing electromagnetic transient simulation calculation according to the message signal to obtain a simulation result and transmitting the simulation result to the simulation control equipment.
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