An emulation test system and an emulation test method

Abstract

The embodiment of the application relates to the new energy technical field, and discloses a simulation test system and a simulation test method. The simulation test system comprises a host computer, a simulator and a station controller, the host computer is connected with the simulator, the simulator is connected with the station controller; the host computer is used for constructing a simulation model for representing each unit in a station, and sending the constructed simulation model to the simulator; the simulator comprises a mainboard, the mainboard is used for running the simulation model according to a preset working condition, and sending simulation parameters of the simulation model to the station controller in real time; the station controller is used for adjusting the simulation parameters according to preset standard parameters of each unit, and sending target parameters obtained through the adjustment to the simulator; and the mainboard is further used for adjusting the simulation model according to the target parameters, and running the adjusted simulation model. The simulation test system can improve the test efficiency, the comprehensiveness and the flexibility of the test of the station controller, and reduce the test cost.

Description

Technical Field

[0001] This application relates to the field of new energy technology, and in particular to a simulation testing system and simulation testing method. Background Technology

[0002] As the proportion of new energy sources in the power grid increases, the pressure on peak shaving and frequency regulation, as well as the risks to safe operation of the power grid, are constantly increasing. This leads to increasingly higher performance requirements for new energy power plants and generating units. For example, the relevant standards for new energy grid connection in my country, GB / T19963 "Technical Regulations for Wind Farm Access to Power Systems," require wind farms to be equipped with active power control systems with active power regulation capabilities; wind farms should be equipped with reactive power and voltage control systems with reactive power regulation and voltage control capabilities. Meanwhile, GB / T 19964 "Technical Regulations for Photovoltaic Power Station Access to Power Systems" requires photovoltaic power stations to be equipped with active power control systems with continuous and smooth active power regulation capabilities, and to participate in system active power control; photovoltaic power stations connected to the power grid at voltage levels of 110(66)kV and above should be equipped with reactive power and voltage control systems with reactive power regulation and voltage control capabilities, etc. Therefore, to ensure the safe and stable operation of the power grid, different power station controllers need to cooperate to control the operation of various devices in the power grid.

[0003] There is a large amount of data interaction and cooperation between different power station controllers, and the randomness and volatility of renewable energy in the system make the overall system more complex. Therefore, it is very important to conduct comprehensive and effective testing of different controllers and algorithms in the power station before the actual project begins. The testing methods for power station controllers are: (1) using a signal generator to generate excitation signals and send them to the controller, and observing the open-loop response of the controller; (2) connecting the controller to a real operating renewable energy power station and testing the controller in the renewable energy power station. However, both of the above testing methods have the problems of insufficient testing comprehensiveness, lack of flexibility, and high cost of manpower and financial resources. Summary of the Invention

[0004] The purpose of this application is to provide a simulation testing system and method for a field controller, which can improve the testing efficiency, comprehensiveness, and flexibility of the field controller, and reduce the testing cost.

[0005] To address the aforementioned technical problems, embodiments of this application provide a simulation testing system, comprising: a host computer, a simulator, and a station controller. The host computer is connected to the simulator, and the simulator is connected to the station controller. The host computer is used to construct simulation models characterizing each unit in the station and send the constructed simulation models to the simulator. The simulator includes a motherboard, which is used to run the simulation models according to preset operating conditions and send the simulation parameters of the simulation models to the station controller in real time. The station controller is used to adjust the simulation parameters according to preset standard parameters for each unit and send the adjusted target parameters to the simulator. The motherboard is also used to adjust the simulation models according to the target parameters and run the adjusted simulation models.

[0006] An embodiment of this application also provides a simulation testing method applied to the above-mentioned simulation testing system, comprising the following steps: running a pre-constructed simulation model for characterizing each unit in the station according to preset operating conditions, and acquiring the simulation parameters of the simulation model in real time; adjusting the simulation parameters according to preset standard parameters of each unit to obtain target parameters; adjusting the simulation model according to the target parameters, and running the adjusted simulation model.

[0007] Compared to existing technologies, the simulation testing system in this application includes a host computer, a simulator, and a station controller. The host computer is connected to the simulator, and the simulator is connected to the station controller. The host computer constructs simulation models to characterize each unit in the station and sends these models to the simulator. The simulator includes a motherboard that can run the simulation models of each unit in real time, simulating the operation of each unit in the station. The motherboard also sends the simulation parameters of the simulation models to the station controller in real time. Since the station controller has preset standard operating parameters for each unit, it can adjust the simulation parameters using these standard parameters when the simulation parameters of the model cannot maintain the normal operation of each unit. This allows the station controller to obtain target parameters and send them to the simulator, enabling the motherboard to adjust the simulation model according to the target parameters and run the adjusted model, thus ensuring stable operation of the simulation model. This application uses a semi-physical simulation method to simulate the operation of each unit in the station, which can more efficiently complete the testing of the station controller. Furthermore, the simulation model can simulate the operating states of the units under various working conditions, thus providing greater comprehensiveness and flexibility in the testing.

[0008] In addition, the simulator also includes a communication board, and the motherboard is connected to the communication board; the motherboard is used to send the simulation parameters to the site controller through the communication board; wherein, the type of the communication board corresponds to the type of the site controller. The simulator of this application can communicate with the site controller through the communication board.

[0009] In addition, the simulation testing system also includes switches connected to both the simulator and the site controller; the motherboard is used to send the simulation parameters to the switch, and the switch is used to forward the simulation parameters to the site controller. The simulator of this application can communicate with the site controller via the switch.

[0010] In addition, the simulator also includes an FPGA board and a fiber optic interface. The motherboard is connected to the FPGA board, and the FPGA board is connected to the fiber optic interface. The motherboard is used to send the simulation parameters to the FPGA board, and the FPGA board is used to send the simulation parameters to the site controller in real time via the fiber optic interface. The simulator of this application can communicate with the site controller via the fiber optic interface to meet the requirements of high-speed communication.

[0011] Furthermore, the number of emulators is several, and each emulator also includes a PCIe slot, through which the several emulators are connected. In this application, if there are several emulators, the emulators communicate with each other via the PCIe slots.

[0012] Furthermore, the simulation model is either a first simulation model or a second simulation model; the first simulation model is the power control model of the unit, and the second simulation model is a model possessing the power-frequency droop characteristics of the unit. The simulation model in this application includes either a first simulation model or a second simulation model. Using the model in this application for station modeling can save simulation resources without affecting the performance of the units in the station.

[0013] In addition, the simulation model includes a controlled voltage source to power its operation. Using a controlled voltage source to power the simulation model in this application reduces costs.

[0014] In addition, the simulation model includes a new energy power generation model, a transmission line model, a transformer model, and several load models.

[0015] In addition, the simulation testing system also includes a Supervisory Control and Data Acquisition (SCADA) system that is communicatively connected to both the simulator and the station controller. The SCADA system is used to read and display the simulation parameters of the simulation model from the simulator in real time. By reading and displaying the simulation parameters of the simulation model in real time, the SCADA system in this application can observe the operating status of the simulation model and the test results of the station controller in real time. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, and these illustrative descriptions do not constitute a limitation on the embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of a simulation testing system according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the structure of a simulation model provided according to an embodiment of this application. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the structure of a simulation model provided according to an embodiment of this application. Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the structure of a simulator according to an embodiment of this application;

[0021] Figure 5 This is a schematic diagram of the structure of a simulation testing system according to another embodiment of this application;

[0022] Figure 6 This is a flowchart of a simulation testing method provided according to another embodiment of this application. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this application to help readers better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments. The division of the various embodiments below is for the convenience of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0024] One embodiment of this application relates to a simulation testing system, comprising: a host computer, a simulator, and a station controller. The host computer is connected to the simulator, and the simulator is connected to the station controller. The host computer is used to construct simulation models characterizing each unit in the station and send the constructed simulation models to the simulator. The simulator includes a motherboard, which is used to run the simulation models according to preset operating conditions and send the simulation parameters of the simulation models to the station controller in real time. The station controller is used to adjust the simulation parameters according to preset standard parameters for each unit and send the adjusted target parameters to the simulator. The motherboard is also used to adjust the simulation model according to the target parameters and run the adjusted simulation model. The simulation testing system of this application can improve the testing efficiency, comprehensiveness, and flexibility of the station controller, and reduce testing costs.

[0025] The implementation details of the simulation test system in this embodiment are described below. The following content is only for the convenience of understanding and is not necessary for implementing this solution.

[0026] See the schematic diagram of the simulation test system in this embodiment. Figure 1 Specifically, it includes: a host computer 101, a simulator 102, and a station controller 103. The host computer 101 is communicatively connected to the simulator 102, and the simulator 102 is communicatively connected to the station controller 103.

[0027] Specifically, in this embodiment, the host computer 101 constructs simulation models to characterize each generating unit using simulation software. Therefore, the simulation models can reflect the characteristics of each generating unit in the renewable energy power station. The host computer 101 sends the completed simulation models to the simulator so that the simulator can run the simulation models. The simulation software can be MATLAB. For example, if each generating unit consists of renewable energy power generation equipment, transmission lines, transformers, and several loads, then the simulation models constructed by the host computer 101 can be: a renewable energy power generation model, a transmission line model, a transformer model, and several load models. It is understood that renewable energy power stations are not limited to the generating units mentioned above, and the simulation models constructed by the host computer 101 in this embodiment are not limited to the aforementioned renewable energy power generation model, transmission line model, transformer model, and several load models.

[0028] In one example, the simulation model is either a first simulation model or a second simulation model; the first simulation model is the power control model of the unit, and the second simulation model is a model with the power-frequency droop characteristics of the unit. A schematic diagram of the first simulation model can be found here. Figure 2 See the schematic diagram of the second simulation model. Figure 3Since the simulation model needs to reflect the characteristics of each unit in the renewable energy power plant, detailed modeling of each unit would consume a large amount of simulation resources, increase simulation costs, and increase model debugging time. However, the power control model of the unit and the model with the power-frequency droop characteristics of the unit retain the closed-loop control part of each unit, have high versatility, and can be used as the simulation model of each unit in the power plant. For example, they can be used as simulation models of wind turbines, photovoltaic equipment, static var generators (SVG), and energy storage equipment. In other words, this embodiment replaces the simulation model of the unit in the power plant by constructing two general simulation models, which can save simulation resources without affecting the performance of the renewable energy units.

[0029] Furthermore, the simulation model includes a controlled voltage source to power its operation. In practical applications, power plants also include primary circuit topologies and switching converters to maintain normal unit operation. However, these devices consume significant simulation resources during simulation. This embodiment uses a controlled voltage source to power the simulation model, thus eliminating the need to simulate the primary circuit topologies and switching converters, thereby reducing costs.

[0030] In this embodiment, after receiving the simulation model sent by the host computer 101, the simulator 102 runs the simulation model according to preset operating conditions and communicates with the station controller 103 to send the simulation parameters of the running simulation model to the station controller 103. The simulation parameters include the unit's voltage, current, power, frequency, etc.

[0031] In one example, after receiving the simulation model sent by the host computer 101, the simulator 102 waits for the host computer 101 to send a run instruction. The run instruction carries the simulation parameters of the preset working conditions, and the simulator 102 runs the simulation model according to the received simulation parameters.

[0032] The structural schematic diagram of simulator 102 is shown below. Figure 4 Specifically, it includes: a motherboard 401, a Field Programmable Gate Array (FPGA) board 402, a communication board 403, a fiber optic interface 404, and a network port 405. The communication board 403 and the fiber optic interface 404 are used to connect to the site controller 103, meaning the simulator 102 communicates with the site controller 103 through the communication board 403 or the fiber optic interface 404; the network port 405 is used to connect to the host computer 101, meaning the simulator 102 receives simulation models sent by the host computer 101 through the network port.

[0033] In its implementation, the motherboard 401 is connected to a network port. The motherboard 401 runs the simulation model sent by the host computer 101 according to preset operating conditions and communicates with the site controller 103 to send the simulation parameters of the running simulation model to the site controller 103. The motherboard includes several CPUs; that is, the motherboard runs the simulation model through several CPUs. The number of CPUs is preset, for example, set to 2.

[0034] In one example, the motherboard 401 is connected to the communication board 403. The motherboard 401 is used to send simulation parameters to the field controller 103 through the communication board 403. The type of the communication board 403 corresponds to the type of the field controller 103. That is, the simulator 102 can configure the corresponding communication board 403 according to the hardware interface of the field controller from different manufacturers.

[0035] Understandably, if the simulator 102 is connected to multiple site controllers 103, multiple communication boards 403 can be configured in the simulator 102 simultaneously to enable communication between the simulator 102 and the multiple site controllers 103. For example, the simulator 102 includes communication board 1, communication board 2, communication board 3, etc. Since the motherboard 401 and the communication boards 403 are connected via a high-speed serial computer expansion bus (peripheral component interconnect express, PCIe), the connection between multiple communication boards 403 and the motherboard 401 requires multiple PCIe lines. That is, the motherboard 401 is connected to communication board 1 via PCIe1, to communication board 2 via PCIe2, to communication board 3 via PCIe3, etc. The motherboard 401 determines the communication board 403 to communicate with the site controller based on the type of the site controller 103, and sends simulation parameters to the site controller 103 through the selected communication board 403.

[0036] The communication protocol between the motherboard 401 and the station controller 103 can be a standard protocol or specification, including but not limited to: IEC-60870-5-104 specification, IEC-61850 protocol, Modbus protocol, TCP / IP protocol, etc. The emulator 102 can also communicate flexibly with the station controller 103 according to the manufacturer's custom communication board 403 or communication protocol.

[0037] In another example, the motherboard 401 is connected to the FPGA board 402, and the FPGA board 402 is connected to the fiber optic interface 404. Because different site controllers 103 have different communication requirements, the motherboard 401 needs to communicate at high speed with some site controllers 103. Therefore, to achieve high-speed communication between the motherboard 401 and the site controller 103, the motherboard 401 sends simulation parameters to the FPGA board 402, and the FPGA board 402 sends simulation parameters to the site controller 103 in real time via the fiber optic interface 404. That is, the FPGA board 402 communicates with the site controller 103 via a high-speed fiber optic protocol. The motherboard 401 and the FPGA board 402 are connected via a PCIe cable.

[0038] In another example, the simulation test system also includes a switch (not shown) connected to the simulator 102 and the site controller 103 respectively. The simulator 102 and the site controller 103 communicate with each other through the switch, that is, the motherboard 401 is used to send simulation parameters to the switch, and the switch is used to forward the simulation parameters to the site controller 103.

[0039] Understandably, when the simulator 102 needs to communicate with multiple site controllers 103, multiple switches can be set up, with each switch used to enable communication between one site controller 103 and the simulator 102.

[0040] It should be noted that if there are multiple emulators 102, each emulator 102 also includes a PCIe slot 406, see [link / reference]. Figure 2 Several emulators are connected via PCIe slots 406, meaning that several emulators 102 communicate with each other through PCIe slots 406. The PCIe slots 406 can be of type PCIe x4, PCIe x8, or PCIe x16.

[0041] In this embodiment, the station controller 103 is specifically used to determine whether the simulation parameters sent by the simulator 102 can maintain the stable operation of each unit in the station based on the preset standard parameters of each unit in the station. If not, the simulation parameters are adjusted, and the adjusted target parameters are sent to the simulator 102, so that the main board 201 of the simulator 102 adjusts the simulation model according to the target parameters and runs the adjusted simulation model to maintain the normal operation of each unit. For example, the preset standard parameters of each unit in the station in the station controller 103 can determine, based on the preset active power-frequency curve of the power grid, that the simulation parameters sent by the simulator 102 cannot maintain the stable operation of each unit in the station, that is, the active power and / or frequency distribution of each unit in the current station is uneven. Then the station controller 103 redistributes the active power and / or frequency of each unit and sends the redistributed active power and / or frequency, i.e., the target parameters, to the simulator 102. It can be seen that by adjusting the simulation model with the target parameters obtained through the station controller 103 and running the adjusted simulation model, if the simulation model can run stably based on the target parameters, it indicates that the station controller 103 is working properly.

[0042] In a specific implementation, the station controller 103 may include any one or any combination of a high-frequency controller, an automatic generation control (AGC) controller, and an automatic voltage control (AVC) controller. That is, this embodiment can simultaneously perform simulation tests on multiple station controllers.

[0043] The fast frequency controller, also known as the primary frequency control controller, is considered, along with the AGC controller, as a major means of power grid frequency control or adjustment. The fast frequency controller primarily performs active power-frequency droop control at the grid connection point of renewable energy plants. These plants have the capability to participate in primary frequency regulation at the grid connection point. Without affecting the performance and function of the existing power monitoring system and AGC controller, they can also coordinate with the AGC controller to jointly achieve peak shaving and frequency regulation functions at the plant. The fast frequency controller can be set with a frequency change dead zone setpoint. When the frequency change exceeds the dead zone, the fast frequency controller achieves frequency regulation by setting a frequency-active power piecewise linear function (i.e., the pf droop curve). The AVC controller is used to realize reactive power control of the power grid voltage. It collects bus voltage, bus reactive power, high and low voltage side reactive power measurement data of each substation and power plant through the Supervisory Control and Data Acquisition (SCADA) system, as well as the status data of each switch, and performs online analysis and calculation in real time. From the perspective of power grid optimization operation, it adjusts the parameters of various reactive power control devices in the entire network and performs automatic reactive power control according to the set AC bus voltage value or the reactive power or voltage curve given by the dispatch.

[0044] It should be noted that, in addition to the fast frequency, AGC, and AVC controllers, new energy power stations may also include other controllers from different manufacturers, and this application does not impose any restrictions on this.

[0045] In related technologies, methods that test the power station controller by generating an excitation signal using a signal generator and sending it to the controller, then observing the controller's open-loop response, rely on the fact that the excitation signal generated by the signal generator can only be a known signal for a short period. This requires signal data under known on-site operating conditions, and the simulated operating conditions are very limited. Furthermore, it cannot form a feedback loop with the actual power station signal to create a closed-loop test, and it is difficult to test the mutual influence between different controllers. Connecting the power station controller to a real, operating renewable energy power station for testing is also limited by the operational requirements of the actual power grid, making it difficult to conduct experiments under different operating conditions. Some operating conditions also require expensive auxiliary equipment.

[0046] In this embodiment, the simulation testing system includes a host computer, a simulator, and a station controller. The host computer is connected to the simulator, and the simulator is connected to the station controller. The host computer constructs simulation models to characterize each unit in the station and sends these models to the simulator. The simulator includes a motherboard that can run the simulation models of each unit in real time, simulating the operation of each unit in the station. The motherboard also sends the simulation parameters of the simulation models to the station controller in real time. Since the station controller has preset standard operating parameters for each unit, it can adjust the simulation parameters using the standard parameters when the simulation parameters of the model cannot maintain the normal operation of each unit. The target parameters are then sent to the simulator, allowing the motherboard to adjust the simulation model according to the target parameters and run the adjusted model, thus ensuring stable operation of the simulation model. This application uses a semi-physical simulation method to simulate the operation of each unit in the station, which can more efficiently complete the testing of the station controller. Furthermore, the simulation model can simulate the operating states of the units under various operating conditions, thus providing greater comprehensiveness and flexibility in the testing.

[0047] Another embodiment of this application relates to a simulation testing system. A schematic diagram of the simulation testing system in this embodiment is shown below. Figure 5 Specifically, it includes: a host computer 501, a simulator 502, a station controller 503, and a SCADA system 504. Among them, the host computer 501, simulator 502, and station controller 503 are largely the same as the host computer 101, simulator 102, and station controller 103 in the first embodiment, and will not be described again here.

[0048] The SCADA system 504 is communicatively connected to the simulator 502 and the station controller 503 respectively. The SCADA system 504 is used to read and display the simulation parameters of the simulation model from the simulator 502 in real time.

[0049] In this embodiment, the simulation test system reads and displays the simulation parameters of the simulation model in real time through the SCADA system, and can observe the running status of the simulation model and the test results of the station controller in real time.

[0050] Another embodiment of this application relates to a simulation testing method applied to the simulation testing system described in any of the above embodiments. The implementation details of the simulation testing method in this embodiment are described in detail below. The following implementation details are provided for ease of understanding only and are not necessary for implementing this solution.

[0051] The detailed flowchart of the simulation test method in this embodiment is as follows: Figure 6 As shown, it includes:

[0052] Step 601: Run the pre-built simulation model for characterizing each unit in the station according to the preset operating conditions, and obtain the simulation parameters of the simulation model in real time.

[0053] The simulation models include a new energy power generation model, a transmission line model, a transformer model, and several load models.

[0054] In one example, the simulation model is either a first simulation model or a second simulation model; the first simulation model is the power control model of the unit, and the second simulation model has the power-frequency droop characteristics of the unit.

[0055] Furthermore, the simulation model includes a controlled voltage source, which is used to power the simulation model.

[0056] Step 602: Adjust the simulation parameters according to the preset standard parameters of each unit to obtain the target parameters.

[0057] Step 603: Adjust the simulation model according to the target parameters and run the adjusted simulation model.

[0058] In this embodiment, the simulation testing system runs a pre-constructed simulation model to characterize each unit in the power station according to preset operating conditions, and acquires the simulation parameters of the simulation model in real time. Based on the preset standard parameters of each unit, the simulation parameters are adjusted to obtain the target parameters. Then, the simulation model is adjusted according to the target parameters and the adjusted simulation model is run. This can simulate the operation of each unit in the power station, complete the testing of the power station controller more efficiently, and the simulation model can simulate the operating state of the unit under various operating conditions, thus making the test more comprehensive and flexible.

[0059] The steps of the various methods described above are only for clarity. In practice, they can be combined into one step or some steps can be split into multiple steps. As long as they include the same logical relationship, they are all within the scope of protection of this patent. Adding insignificant modifications or introducing insignificant designs to the algorithm or process, but without changing the core design of the algorithm and process, are also within the scope of protection of this patent.

[0060] It is not difficult to see that this embodiment is a method embodiment corresponding to the system embodiment, and this embodiment can be implemented in conjunction with the system embodiment. The relevant technical details mentioned in the system embodiment are still valid in this embodiment, and will not be repeated here to reduce repetition. Correspondingly, the relevant technical details mentioned in this embodiment can also be applied to the system embodiment.

[0061] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the embodiments of this disclosure.

Claims

1. A simulation testing system, characterized in that, include: The system includes a host computer, a simulator, and a station controller, wherein the host computer is connected to the simulator, and the simulator is connected to the station controller. The host computer is used to construct simulation models to characterize each unit in the station, and sends the constructed simulation models to the simulator; The simulator includes a motherboard, which is used to run the simulation model according to preset operating conditions and send the simulation parameters of the simulation model to the station controller in real time. The site controller is used to determine whether the simulation parameters can maintain the stable operation of each of the units in the site based on the preset standard parameters of each unit; if the simulation parameters cannot maintain the stable operation of each of the units in the site, the simulation parameters are adjusted and the adjusted target parameters are sent to the simulator. The motherboard is also used to adjust the simulation model according to the target parameters and run the adjusted simulation model.

2. The simulation testing system according to claim 1, characterized in that, The simulator also includes a communication board, and the motherboard is connected to the communication board. The motherboard is used to send the simulation parameters to the site controller via the communication board; wherein the type of the communication board corresponds to the type of the site controller.

3. The simulation testing system according to claim 1, characterized in that, The simulation testing system also includes switches that are connected to the simulator and the site controller respectively; The motherboard is used to send the simulation parameters to the switch, and the switch is used to forward the simulation parameters to the site controller.

4. The simulation testing system according to claim 1, characterized in that, The simulator also includes an FPGA board and a fiber optic interface. The motherboard is connected to the FPGA board, and the FPGA board is connected to the fiber optic interface. The motherboard is used to send the simulation parameters to the board, and the FPGA board is used to send the simulation parameters to the site controller in real time through the optical fiber interface.

5. The simulation testing system according to claim 4, characterized in that, The number of emulators is several, and each emulator also includes a PCIe slot, through which the several emulators are connected.

6. The simulation testing system according to claim 5, characterized in that, The simulation model is either a first simulation model or a second simulation model; The first simulation model is the power control model of the unit, and the second simulation model is a model with the power-frequency droop characteristics of the unit.

7. The simulation testing system according to claim 6, characterized in that, The simulation model includes a controlled voltage source, which is used to power the operation of the simulation model.

8. The simulation testing system according to any one of claims 1 to 7, characterized in that, The simulation model consists of a new energy power generation model, a transmission line model, a transformer model, and several load models.

9. The simulation testing system according to claim 1, characterized in that, The simulation test system also includes a power monitoring system SCADA that is communicatively connected to the simulator and the station controller, respectively. The SCADA system is used to read and display the simulation parameters of the simulation model from the simulator in real time.

10. A simulation testing method, characterized in that, The simulation testing system is applied to any one of claims 1 to 9; The method includes: The simulation model, which is pre-built to characterize each unit in the station, is run according to the preset operating conditions, and the simulation parameters of the simulation model are obtained in real time. The simulation parameters are adjusted according to the preset standard parameters of each unit to obtain the target parameters; Adjust the simulation model according to the target parameters, and run the adjusted simulation model.

Images