Real-time simulation control system of new energy station

Abstract

The invention relates to the technical field of power grid system dispatching, in particular to a real-time simulation control system of a new energy station, which comprises a database input module, a communication configuration module, a wind turbine generator real-time simulation module, a wind field power control module and an upper computer software configuration module. The wind field power control module issues a wind field control strategy and a unit control strategy to the wind-light power storage station; the wind turbine generator real-time simulation module simulates the operation state of the wind turbine generator in real time, outputs the measurement value of the operation state of the wind turbine generator, and optimizes the unit control strategy of the wind field power control module; the upper computer software configuration module visually displays the operation state measurement value of the wind turbine generator; and the communication configuration module establishes communication between the database input module, the wind turbine generator real-time simulation module, the wind field power control module and the upper computer software configuration module. According to the invention, data transmission and power response characteristics of automatic power generation control under complex environmental factors and power grid requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid system dispatching, and in particular to a real-time simulation control system for a new energy station. Background Art

[0002] The wind power model in the existing simulation system is an electrical grid-connected model, which lacks full-scale simulation of weather factors, physical structure, wind energy capture, aerodynamic efficiency and other characteristics. It is not suitable for the study of fluctuations stimulated by changes in wind speed in time and space, that is, the model does not cover turbulence, tower shadows, wind shear, wake, and cannot carry out refined modeling and simulation analysis of new energy such as wind power and photovoltaics. It cannot meet the scientific research needs of supporting the construction of new power systems. At the same time, when new energy is connected to the grid, due to the limitations of the control strategy, the tracking accuracy will be low, which seriously restricts the simulation test and research and development of new energy grid-connected control technology under the new power system.

[0003] At present, many research papers have provided real-time simulation methods for new energy stations. Most real-time simulations of new energy stations use SCADA+EMS architecture for management and control, but this architecture has the characteristics of complex deployment, poor mobility, and difficult operation and maintenance. As a product of the deep integration of new generation information technology and manufacturing, the industrial Internet is increasingly becoming a key support and super engine for new industrialization. The active support capability of new energy stations is weak, and it is closely related to the power generation unit of the station controller. Due to the large number of on-site units, the large number of controllers in the station, the large difference in operating status, and the limitation of IO ports, it cannot ensure that each unit is consistent with the on-site operating conditions; at the same time, the current hardware has a single communication interface in the simulation, and the signal transmission between controllers and between controllers and simulators is not easy to be monitored. The communication transmission efficiency is low, and the data is not easy to store, resulting in complex simulation of on-site conditions.

[0004] Therefore, how to realize the remote configuration and calling of relevant functional modules, simulate the operating status of the station in real time, accurately analyze the impact of new energy on the stability of the power grid, and ensure the full absorption of new energy are the problems that need to be solved in current research. Summary of the invention

[0005] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that it is difficult to use a real-time simulation control system to simulate the operating status of a new energy station.

[0006] In order to solve the above technical problems, the present invention provides a real-time simulation control system for a new energy station, comprising: Database input module, used to obtain and store real-time wind power data; The communication configuration module is used to select the communication protocol according to the interface type and set the parameters of the communication protocol for data transmission; The wind turbine real-time simulation module is connected with the database input module and the communication configuration module, and is used to build a wind turbine simulation model, simulate the operation status of the wind turbine in real time according to the real-time data of wind power, and output the measured value of the operation status of the wind turbine through the communication configuration module; The wind farm power control module is connected with the database input module, the communication configuration module and the wind turbine real-time simulation module, and is used to build the wind turbine control strategy. The wind power real-time data of the database input module is obtained through the communication configuration module to generate the wind farm control strategy and the unit control strategy; the wind turbine operating status measurement value output by the wind turbine real-time simulation module is obtained through the communication configuration module, the unit control strategy is optimized, and the command value of the optimized unit control strategy is fed back to the wind turbine real-time simulation module; the wind farm control strategy and the optimized unit control strategy are sent to the wind, solar and storage power station through the communication configuration module; The upper computer software configuration module is connected with the communication configuration module and the wind turbine real-time simulation module, and is used to obtain the wind turbine operating status measurement value output by the wind turbine real-time simulation module through the communication configuration module for display, and issue a power command through the communication configuration module.

[0007] Preferably, the real-time wind power data acquired and stored by the database input module includes wind speed, wind direction, power and whole-field active power.

[0008] Preferably, the database input module is arranged in TwinCAT software, and MySQL is used as a database to store real-time wind power data.

[0009] Preferably, the communication configuration module performs communication configuration based on TwinCAT software, and the communication protocols include ADS protocol, Modbus protocol and 104 communication protocol.

[0010] Preferably, the wind farm power control module obtains the wind turbine operating status measurement value output by the wind turbine real-time simulation module through the ADS protocol of the communication configuration module, and feeds back the command value of the optimized unit control strategy to the wind turbine real-time simulation module.

[0011] Preferably, the wind farm power control module sends the wind farm control strategy and the optimized unit control strategy to the wind, solar and energy storage power station through the communication protocol 104 of the communication configuration module.

[0012] Preferably, the wind farm power control module obtains the wind power real-time data of the database input module through the Modbus protocol of the communication configuration module; The upper computer software configuration module obtains the wind turbine operating status measurement value output by the wind turbine real-time simulation module through the Modbus protocol of the communication configuration module for display, and sends power instructions through the Modbus protocol of the communication configuration module.

[0013] Preferably, the parameters of the communication protocol in the communication configuration module include the local IP address, port number and the IP address and port number of the receiving device.

[0014] Preferably, the wind turbine real-time simulation module uses GH Bladed wind turbine simulation software to simulate the operating status of the wind turbine in real time, and is connected to the communication configuration module through the Hardwire Test external hardware interface of the GH Bladed wind turbine simulation software.

[0015] Preferably, the wind turbine real-time simulation module uses an embedded programmable logic controller as a main controller to build a wind turbine simulation model; The wind farm power control module adopts an embedded programmable logic controller as a main controller, which is used to send wind farm control strategies and optimized unit control strategies to the wind, solar and energy storage power station.

[0016] The above technical solution of the present invention has the following beneficial effects compared with the prior art: A real-time simulation control system for a new energy station described in the present invention builds a wind turbine control strategy in a wind farm power control module, sends the wind farm control strategy and the unit control strategy to the wind, solar and storage power station, and uses the wind turbine real-time simulation module to simulate the operating status of the wind turbine in real time, outputs the wind turbine operating status measurement value, optimizes the unit control strategy of the wind farm power control module, and uses the upper computer software configuration module to visualize the wind turbine operating status measurement value. The present invention establishes communication between a database input module, a wind turbine real-time simulation module, a wind farm power control module and a host computer software configuration module through a communication configuration module, utilizes a variety of communication protocols to meet the real-time and remote control characteristics required for system data exchange, performs simulation analysis on multiple units, realizes high-speed and efficient data reading and writing, and the main controller of the wind farm power control module controls the hardware-in-the-loop of the simulation unit of the wind turbine real-time simulation module, meets the data transmission and power response characteristics of automatic power generation control under complex environmental factors and power grid requirements, effectively improves the stability and safety of new energy stations after connecting to the power grid, enables new energy stations to better adapt to the acceptance capacity of the power grid, and enables the power grid to make more reasonable power response decisions in a complex and changeable environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein: Figure 1 It is a structural diagram of a real-time simulation control system of a new energy station of the present invention; Figure 2 It is the flowchart of the database input module; Figure 3 It is the flow chart of the real-time simulation module of wind turbine; Figure 4 This is the ADS protocol architecture diagram. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0019] Reference Figure 1 As shown, the present invention provides a real-time simulation control system for a new energy station, comprising: A database input module is used to obtain and store real-time wind power data, including wind speed, wind direction, power and active power of the entire field; A communication configuration module is used to determine the communication protocol selected according to the interface type for data transmission; The wind turbine real-time simulation module is connected with the database input module and the communication configuration module, and is used to build a wind turbine simulation model, simulate the operation status of the wind turbine in real time according to the real-time data of wind power, and output the measured value of the operation status of the wind turbine through the communication configuration module; The wind farm power control module is connected with the database input module, the communication configuration module and the wind turbine real-time simulation module, and is used to build the wind turbine control strategy. The wind power real-time data of the database input module is obtained through the communication configuration module to generate the wind farm control strategy and the unit control strategy; the wind turbine operating status measurement value output by the wind turbine real-time simulation module is obtained through the communication configuration module, the unit control strategy is optimized, and the command value of the optimized unit control strategy is fed back to the wind turbine real-time simulation module; the wind farm control strategy and the optimized unit control strategy are sent to the wind, solar and storage power station through the communication configuration module; The upper computer software configuration module is connected with the communication configuration module and the wind turbine real-time simulation module, and is used to display the wind turbine operating status measurement value output by the wind turbine real-time simulation module, and to issue power instructions through the communication configuration module.

[0020] Reference Figure 2 As shown, the database input module is set in the TwinCAT software, and MySQL is used as the database to store wind power real-time data. The database input module realizes the collection of real-time data through interaction with the back-end module, such as the storage of wind speed, wind direction, power and active power of the whole field, and can also realize the manual storage of historical operation data in the database. Specifically, it includes the following steps: Extract the required real-time wind power data from the simulation model or the actual site; Establish database connection according to data point table; Clean wind power real-time data through the back-end module and complete wind power real-time data storage; Configure through the database service module of wind power real-time data software, complete the data connection with the specified database table, and use TwinCAT software to read wind power real-time data; Write database reading and writing programs to realize data reading and writing between the database and the hardware controller.

[0021] Reference Figure 3 As shown, the wind turbine real-time simulation module mainly uses an embedded programmable logic controller as the main controller, combined with high-precision wind turbine simulation software GH Bladed and supporting software and hardware units, to simulate the operating status of the wind turbine in real time, and connect to the communication configuration module through the Hardwire Test external hardware interface of the GH Bladed wind turbine simulation software. The wind farm power control module obtains the wind turbine operating status measurement value output by the wind turbine real-time simulation module through the ADS protocol of the communication configuration module, and feeds back the command value of the optimized unit control strategy to the wind turbine real-time simulation module. The specific steps are as follows: Build a Bladed wind turbine simulation model; Connect the wind turbine simulation model and the controller to the same network segment; Establish ADS device connection, fill in or select the NetlD and port number Port of the ADS device to be connected; Call TwinCAT.Ads library function to define ADS object; Create a Port connection, establish a handle object, instantiate an ADS stream, and operate the data stream for loop reading; After the data is read, resources are released and unit control strategies are added to achieve relatively accurate simulation of the dynamic and steady-state performance of wind power generation under different working conditions and components.

[0022] In this embodiment, the embedded programmable logic controller used by the wind turbine real-time simulation module is a Bladed controller.

[0023] The wind farm power control module mainly uses an embedded programmable logic controller as the main controller, combined with the Modbus communication protocol, to complete the actual scene monitoring function of the wind, solar and storage power station, and issue dispatch instructions to the wind, solar and storage power station to run the field group control strategy. The specific steps are as follows: Build a field group control strategy; The Modbus protocol of the communication configuration module is used to obtain the real-time wind power data of the database input module and collect the operating status of each unit in each wind farm station; Generate power command information according to the unit operation status and other conditions; The wind farm control strategy and optimized unit control strategy, namely the dispatching instructions and operating environment variables, are sent to the wind, solar and storage power station through the 104 communication protocol of the communication configuration module, and the operating status of the wind farm is uploaded to the dispatcher. At the same time, a closed-loop control approach is adopted to enable the wind farm to efficiently track the AGC active dispatching instructions.

[0024] In this embodiment, the embedded programmable logic controller used in the wind farm power control module is Beckhoff PLC.

[0025] The wind farm power control module uses the communication configuration module to establish communication with the wind farm AGC active control module and the wind turbine simulation module, monitors the wind farm operation status in real time, and realizes high-speed and efficient data reading and writing. At the same time, the data communication between the external real-time simulation module and TwinCAT is realized through the Hardware Test external hardware interface provided by the wind turbine simulation software. In addition, based on the short communication cycle of the ADS protocol, the interface is open, simple and flexible, and it can better meet the real-time and remote control characteristics required for data exchange of the system than other protocols. The present invention simulates and analyzes multiple units through the ADS protocol, realizes the hardware-in-the-loop control of the simulated unit by the main controller, and realizes the simulation analysis requirements of the power control / dispatching strategy from the unit to the station.

[0026] The upper computer software configuration module is used for data communication and information exchange with other simulation analysis modules, and can also be used for displaying and processing data between the real-time simulation analysis module, including the issuance of power instructions, monitoring of the unit operation status, and input of information such as wind speed and light.

[0027] The upper computer software configuration module mainly includes a farm group configuration module and a unit configuration module. The farm group control module is responsible for receiving farm station instructions, analyzing and processing the instructions, and sending them to the wind, solar and storage farm stations; the unit configuration module is responsible for receiving instructions sent by the farm group, analyzing and processing the instructions, and then sending the instructions to each unit.

[0028] The communication configuration module performs communication configuration based on TwinCAT software. The communication protocols include ADS protocol, Modbus protocol and 104 communication protocol. It is mainly used to determine the interface type of each controller and configure the parameters of the real-time simulator. It is also used to receive control instructions sent by the real-time simulator and simulation data sent by the real-time simulation module, perform signal logic operations and signal association to determine data conditioning rules.

[0029] The communication configuration module determines the number of communication interfaces according to different communication interfaces and sets the communication protocol accordingly. The specific parameters include the local IP address, port number and the IP address and port number of the receiving device.

[0030] The communication configuration module uses an adapted physical board to construct a data channel based on the parameter configuration information and the data channel matching setting information, so as to match the hardware interface. In a wind farm, the main equipment has two physical interfaces, namely, the I0 interface and the communication interface. The I0 interface includes but is not limited to analog input / output ports and digital input / output ports; the communication interface includes CAN interface, Profibus interface, Modbus interface and network port, etc.

[0031] ADS is a high-performance, low-latency, real-time data communication method, mainly used in industrial automation, mechanical control and other scenarios that require real-time data processing. It is suitable for communication between the GH Bladed simulation software of this system and the Beckhoff PLC. The ADS protocol architecture provided by the present invention refers to Figure 4 shown.

[0032] The Modbus protocol supports traditional RS-232, RS-422, RS-485 and Ethernet devices. On the one hand, Beckhoff PLC transmits the fan operation data to the database at the back end of the control platform through the Modbus protocol for display on the front-end large screen. On the other hand, the Modbus protocol receives instructions from the field control to respond to the unit output. Specifically, it includes: The wind farm power control module obtains the real-time wind power data from the database input module through the Modbus protocol of the communication configuration module; The upper computer software configuration module obtains the wind turbine operating status measurement value output by the wind turbine real-time simulation module through the Modbus protocol of the communication configuration module for display, and sends power instructions through the Modbus protocol of the communication configuration module.

[0033] The real-time simulation control system of a new energy station provided by the present invention, according to the relevant requirements such as technical indicators, builds the corresponding wind turbine control strategy in the wind farm power control module, accepts the real-time control command of the dispatch, and transmits the wind turbine operation data to the database at the back end of the control and management platform through the communication configuration module, which is used for the front-end large screen display, and receives the command issued by the station control system to respond to the output of the unit. In addition, the present invention is based on TwinCAT software combined with GHBladed and supporting software and hardware units, and by building a TwinCAT visualization page, a real-time simulation module of a wind turbine is built, providing data collection and real-time monitoring of wind farms and each single unit, and through the corresponding communication configuration, multiple units are simulated and run in full working conditions, and the hardware in-loop control of the simulation unit by the main controller is realized. At the same time, the multi-source collaborative scheduling platform built in the Twincat software is configured with a corresponding database input module to realize the input conditions of the wind conditions of each unit in the field for factors such as weather and environment, and combined with the real-time simulation module of the wind turbine and the wind farm power control module, the real simulation of the evolution process of the wind conditions of multiple units is realized, and the data transmission and power response characteristics of AGC control under complex environmental factors and power grid requirements are realized.

[0034] In summary, the real-time simulation control system of a new energy station described in the present invention builds a wind turbine control strategy in a wind farm power control module, sends the wind farm control strategy and the unit control strategy to the wind, solar and storage power station, and uses the wind turbine real-time simulation module to simulate the operating status of the wind turbine in real time, outputs the wind turbine operating status measurement value, optimizes the unit control strategy of the wind farm power control module, and uses the upper computer software configuration module to visualize the wind turbine operating status measurement value. The present invention establishes communication between a database input module, a wind turbine real-time simulation module, a wind farm power control module and a host computer software configuration module through a communication configuration module, utilizes a variety of communication protocols to meet the real-time and remote control characteristics required for system data exchange, performs simulation analysis on multiple units, realizes high-speed and efficient data reading and writing, and the main controller of the wind farm power control module controls the hardware-in-the-loop of the simulation unit of the wind turbine real-time simulation module, meets the data transmission and power response characteristics of automatic power generation control under complex environmental factors and power grid requirements, effectively improves the stability and safety of new energy stations after connecting to the power grid, enables new energy stations to better adapt to the acceptance capacity of the power grid, and enables the power grid to make more reasonable power response decisions in a complex and changeable environment.

[0035] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0036] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0037] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0038] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A real-time simulation control system for a new energy station, characterized in that: include: Database input module, used to obtain and store real-time wind power data; The communication configuration module is used to select the communication protocol according to the interface type and set the parameters of the communication protocol for data transmission; The wind turbine real-time simulation module is connected with the database input module and the communication configuration module, and is used to build a wind turbine simulation model, simulate the operation status of the wind turbine in real time according to the real-time data of wind power, and output the measured value of the operation status of the wind turbine through the communication configuration module; The wind farm power control module is connected with the database input module, the communication configuration module and the wind turbine real-time simulation module, and is used to build the wind turbine control strategy. The wind power real-time data of the database input module is obtained through the communication configuration module to generate the wind farm control strategy and the unit control strategy; the wind turbine operating status measurement value output by the wind turbine real-time simulation module is obtained through the communication configuration module, the unit control strategy is optimized, and the command value of the optimized unit control strategy is fed back to the wind turbine real-time simulation module; the wind farm control strategy and the optimized unit control strategy are sent to the wind, solar and storage power station through the communication configuration module; The upper computer software configuration module is connected with the communication configuration module and the wind turbine real-time simulation module, and is used to obtain the wind turbine operating status measurement value output by the wind turbine real-time simulation module through the communication configuration module for display, and issue a power command through the communication configuration module.

2. A real-time simulation control system for a new energy station according to claim 1, characterized in that: The real-time wind power data acquired and stored by the database input module include wind speed, wind direction, power and the entire field active power.

3. A real-time simulation control system for a new energy station according to claim 1, characterized in that: The database input module is set in TwinCAT software, and uses MySQL as a database to store real-time wind power data.

4. A real-time simulation control system for a new energy station according to claim 1, characterized in that: The communication configuration module performs communication configuration based on TwinCAT software, and the communication protocols include ADS protocol, Modbus protocol and 104 communication protocol.

5. A real-time simulation control system for a new energy station according to claim 4, characterized in that: The wind farm power control module obtains the wind turbine operating status measurement value output by the wind turbine real-time simulation module through the ADS protocol of the communication configuration module, and feeds back the command value of the optimized unit control strategy to the wind turbine real-time simulation module.

6. A real-time simulation control system for a new energy station according to claim 4, characterized in that: The wind farm power control module sends the wind farm control strategy and the optimized unit control strategy to the wind, solar and energy storage power station through the 104 communication protocol of the communication configuration module.

7. A real-time simulation control system for a new energy station according to claim 4, characterized in that: The wind farm power control module obtains the real-time wind power data from the database input module through the Modbus protocol of the communication configuration module; The upper computer software configuration module obtains the wind turbine operating status measurement value output by the wind turbine real-time simulation module through the Modbus protocol of the communication configuration module for display, and sends power instructions through the Modbus protocol of the communication configuration module.

8. A real-time simulation control system for a new energy station according to claim 4, characterized in that: The parameters of the communication protocol in the communication configuration module include the local IP address, port number and the IP address and port number of the receiving device.

9. A real-time simulation control system for a new energy station according to claim 1, characterized in that: The wind turbine real-time simulation module uses GH Bladed wind turbine simulation software to simulate the operation status of the wind turbine in real time, and is connected to the communication configuration module through the Hardwire Test external hardware interface of the GH Bladed wind turbine simulation software.

10. A real-time simulation control system for a new energy station according to claim 1, characterized in that: The wind turbine real-time simulation module uses an embedded programmable logic controller as a main controller to build a wind turbine simulation model; The wind farm power control module adopts an embedded programmable logic controller as a main controller, which is used to send wind farm control strategies and optimized unit control strategies to the wind, solar and energy storage power station.

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