High-voltage direct-hanging energy storage system simulation device
By combining multi-core CPU and FPGA chips in the simulation device of the high-voltage direct-hook energy storage system, using the fiber protocol conversion device and PCIE/CAN bus communication, the precise simulation and data interaction complexity of the high-voltage direct-hook energy storage system in real-time simulation test is solved. Problem, high-precision, low-latency simulation is achieved, and testing costs and hazard coefficients are reduced.
Patent Information
- Application Number
- CN202421063946.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The high-voltage direct-mounted energy storage system faces the problems of accurate simulation difficulties, complex data interactions and inconsistent communication protocols in real-time simulation tests, which leads to the inability to simulate in parallel with high accuracy and low latency, and the test cost is high and the risk factor is large.
A high-voltage direct-hook energy storage system simulation device is designed, using a multi-core CPU processor and FPGA chip to achieve high-speed and low-interference data transmission through optical fiber protocol conversion device, and efficient communication is carried out through PCIE and CAN bus, supporting users' own Define protocols and precise simulations.
It realizes parallel simulation with high precision and low latency, reduces temperature improvement, ensures the stability and reliability of the simulation device, simplifies the communication protocol conversion of different manufacturers, and improves testing efficiency and security.
Smart Images
Figure CN222213233U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of energy storage simulation equipment, in particular to a high-voltage direct-mounted energy storage system simulation device. Background Art
[0002] With the growing demand for energy storage technology and the requirements for grid stability and flexibility, in order to balance the difference between load and supply in the power network and improve the efficiency and reliability of the power system, high-voltage direct-mounted energy storage systems have gradually become the focus of research for various energy storage manufacturers. At present, high-voltage direct-mounted energy storage systems have mature applications in new energy distribution storage, grid side, and large-scale industry and commerce at 6kv and 10kv. There are many demonstration projects for high-voltage direct-mounted energy storage at the 35kV voltage level and it has become the focus of research for many manufacturers. High-voltage direct-mounted energy storage is a relatively special structure of high-voltage and large-capacity energy storage. It is connected to the AC power grid through a transformerless mode and uses many small-power and small-capacity energy storage units to form a high-power and large-capacity energy storage system.
[0003] The energy storage controller is the operation and control center of the entire high-voltage direct-mounted energy storage system, and is very important for the normal and reliable operation of the system. High-voltage direct-mounted energy storage systems usually have high voltage levels, large power capacity, many cascaded sub-modules, a large number of switches, and a large battery system. Testing based on a physical platform is costly, risky, and complex. Testing and debugging on a physical prototype is difficult, and it is often difficult to show some abnormal operating conditions, such as voltage fluctuations and frequency offsets in the power grid. Therefore, it is very necessary for high-voltage direct-mounted energy storage controllers to be tested through a real-time simulation device that can simulate various operating conditions of the actual system.
[0004] Since testing using real-time simulation devices has the advantages of being easy to test various working conditions, safe, and easy to achieve test automation, this testing method has been used in many applications.
[0005] However, for high-voltage direct-mounted energy storage systems, real-time simulation testing has the following main challenges:
[0006] 1. High-voltage direct-mounted energy storage systems usually contain hundreds of power electronic devices, which cannot be accurately simulated by conventional real-time simulation devices. In order to ensure the accuracy of real-time simulation, this requires the real-time simulation device to have an extremely small simulation step size, usually at the level of a few microseconds.
[0007] Second, there is a lot of data interaction between the high-voltage direct-mounted energy storage system and the controller, and the traditional physical IO wiring method cannot be used to achieve interaction;
[0008] Third, the communication protocols of each manufacturer's controller are different, resulting in a long secondary development cycle and low efficiency. Utility Model Content
[0009] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide a high-voltage direct-mounted energy storage system simulation device, which supports users to simulate large-scale high-voltage direct-mounted energy storage systems in parallel with high precision and low latency.
[0010] The purpose of the utility model can be achieved through the following technical solutions:
[0011] A high-voltage direct-mounted energy storage system simulation device comprises a simulation device host computer and a real-time simulation device which are communicatively connected to each other. The high-voltage direct-mounted energy storage system simulation device also comprises a protocol conversion device and a user controller. The real-time simulation device comprises a CPU processor equipped with an energy storage battery model and an FPGA chip equipped with a cascade topology module. The CPU processor is communicatively connected to the FPGA chip, and the real-time simulation device is communicatively connected to the user controller via the protocol conversion device and a physical IO interface.
[0012] Furthermore, the CPU processor and the FPGA chip communicate with each other at high speed via PCIE.
[0013] Furthermore, the CPU processor is an 8-core 3.8 GHz CPU processor.
[0014] Furthermore, the FPGA chip is an UltraScaleKU115 model.
[0015] Furthermore, the protocol conversion device connects the real-time simulation device and the user controller via optical fiber communication.
[0016] Furthermore, the real-time simulation device is connected to the simulation device host computer via Ethernet.
[0017] Furthermore, the protocol conversion device is connected to a protocol conversion device host computer via Ethernet.
[0018] Furthermore, the protocol conversion device is encapsulated in a shell, the shell is a square structure, an optical fiber interface is provided in the shell, and the optical fiber is connected to the optical fiber interface through an optical module.
[0019] Furthermore, the top and bottom of the shell are provided with heat dissipation holes distributed in an array, a turbo fan is also installed in the shell, and the optical fiber interface is located in the heat dissipation area of the turbo fan.
[0020] Furthermore, the user controller is also connected to the real-time simulation device via CAN bus communication.
[0021] Compared with the prior art, the utility model has the following advantages:
[0022] (1) The utility model takes into account the problem that high-voltage direct-mounted energy storage systems usually contain hundreds of power electronic devices and conventional real-time simulation devices cannot accurately simulate them. It proposes to run the massive energy storage battery model of the high-voltage direct-mounted energy storage system and the cascade modules in the topology in the CPU and FPGA of the simulator respectively. The multi-core high-performance CPU and powerful FPGA capabilities of the simulator support users to simulate large-scale high-voltage direct-mounted energy storage systems in parallel with high precision and low latency.
[0023] The optical fiber protocol conversion device is set up to communicate between the real-time simulation device and the user controller, which supports the user to flexibly customize the protocol through the protocol converter host computer and easily realize the conversion of different optical fiber protocols.
[0024] (2) The utility model uses optical fiber communication instead of physical I / O ports, which can realize lossless and low-interference transmission of massive data; the optical fiber protocol conversion device is equipped with 16-way SFP+ 10 Gigabit interfaces, which can realize high-speed, low-interference, and low-loss transmission of large amounts of data.
[0025] (3) The utility model provides array-distributed heat dissipation holes on the top and bottom of the shell of the real-time simulation device, and adds a heat dissipation fan sub-board at the bottom, which increases the air circulation of the optical port connector, effectively reduces the temperature rise, and ensures the stable and reliable operation of the optical fiber module. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural schematic diagram of a high-voltage direct-mounted energy storage system simulation device provided in an embodiment of the utility model;
[0027] Figure 2 A structural schematic diagram of a real-time simulation device provided in an embodiment of the utility model;
[0028] Figure 3 A schematic diagram of a housing structure from a top perspective of a protocol conversion device provided in an embodiment of the utility model;
[0029] Figure 4 A schematic diagram of a housing structure from a bottom perspective of a protocol conversion device provided in an embodiment of the utility model;
[0030] Figure 5 A schematic diagram of the internal structure of a housing structure of a protocol conversion device provided in an embodiment of the utility model;
[0031] In the figure, 1. simulation device host computer, 2. real-time simulation device, 21. CPU processor, 22. FPGA chip, 3. protocol conversion device, 31. shell, 311. heat dissipation hole, 32. optical port connector, 33. turbo fan, 4. user controller, 5. protocol conversion device host computer. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0035] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.
[0036] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0037] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0038] Example 1
[0039] like Figure 1 and Figure 2As shown, this embodiment provides a high-voltage direct-mounted energy storage system simulation device, including a simulation device host computer 1, a real-time simulation device 2, a protocol conversion device 3 and a user controller 4. The simulation device host computer 1 and the real-time simulation device 2 are communicatively connected to each other. The real-time simulation device 2 includes a CPU processor 21 equipped with an energy storage battery model and an FPGA chip 22 equipped with a cascade topology module. The CPU processor 21 is communicatively connected to the FPGA chip 22, and the real-time simulation device 2 is communicatively connected to the user controller 4 through the protocol conversion device 3 and the physical IO interface.
[0040] This solution sets up a multi-core CPU processor 21 and an FPGA chip 22, runs the energy storage battery model in the multi-core CPU processor 21, and supports user-defined battery models. The simulator has the CPU multi-core parallel simulation capability. Multi-core parallel can accurately simulate the series and parallel connection of energy storage batteries with a simulation step size of less than or equal to 50us.
[0041] Running the cascade modules in the high-voltage direct-mounted energy storage topology on the simulator FPGA can achieve real-time simulation with a small step length of 1us, with the characteristics of low latency and high precision.
[0042] In this embodiment, the CPU processor 21 is an 8-core 3.8 GHz CPU processor, and the FPGA adopts the new ultra-multi-resource model UltraScaleKU115. The device supports 8 SFP+ fiber ports and can be used for fiber optic communication.
[0043] When in use, the cascade modules in the high-voltage direct-mounted energy storage topology are run in the FPGA of the simulator with a simulation step of 1us, and the energy storage batteries, circuit breakers and other parts are run in the CPU of the simulator with a simulation step of 50us. The CPU and FPGA exchange information such as sub-module voltage, current, SOC, and circuit breakers through PCIE.
[0044] The real-time simulation device 2 is equipped with a dedicated power electronic multi-level solver, which can be used to accurately simulate high-voltage direct-mounted energy storage applications, and supports user-defined energy storage battery models and free configuration of any level of high-voltage direct-mounted energy storage models. The high-voltage direct-mounted energy storage real-time simulation device 2 fully combines the respective advantages of real-time multi-core processors and FPGAs, and can achieve high-speed response to the PWM control pulses issued by the energy storage controller, thereby accurately simulating the power electronic circuit part in real time.
[0045] Preferably, the CPU processor 21 and the FPGA chip 22 communicate with each other at high speed via PCIE.
[0046] The real-time simulation device 2 is used in conjunction with the protocol conversion device 3. Through the protocol conversion device host computer 5, it supports users to flexibly customize and modify the protocol, realizes the conversion of different optical fiber protocols, and can detect the data and status of each sub-unit online in real time.
[0047] Preferably, the protocol conversion device 3 connects the real-time simulation device 2 and the user controller 4 via optical fiber communication, so that data information can be interacted with low loss and low interference.
[0048] In this embodiment, the optical fiber protocol conversion device 3 is equipped with 16 SFP+ 10G optical fiber interfaces, and the maximum transmission rate can reach 10Gbps, which can enable hosts using different high-level protocols on the communication network to cooperate with each other and complete various distributed applications.
[0049] In addition, the real-time simulation device 2 is connected to the simulation device host computer 1 via Ethernet. The protocol conversion device 3 is connected to the protocol conversion device 3 host computer via Ethernet.
[0050] Preferably, Figure 3 , Figure 4 and Figure 5 As shown, in order to ensure the operating environment of the protocol conversion device 3, the protocol conversion device 3 is encapsulated in a shell 31, and the shell 31 is a square structure. An optical fiber interface 32 is provided in the shell 31, and the optical fiber is connected to the optical fiber interface 32 through an optical module.
[0051] The top and bottom of the shell 31 are both provided with heat dissipation holes 311 distributed in an array. A turbo fan 33 is also installed in the shell 31 , and the optical fiber interface 32 is located in the heat dissipation area of the turbo fan 33 .
[0052] The housing 31 adds heat dissipation holes at the top and bottom, and adds a heat dissipation fan sub-board at the bottom to increase the air circulation of the optical port connector 32, effectively reducing the temperature rise and ensuring the stable and reliable operation of the optical fiber module.
[0053] Optionally, the user controller 4 is also connected to the real-time simulation device 2 via CAN bus communication, and can transmit battery information via the CAN bus and obtain sampling signals such as grid voltage and current through a physical IO interface.
[0054] The communication form of the CAN bus is not limited to a single one, and other communication methods can be used to realize the construction of a complete high-voltage direct-mounted energy storage real-time simulation test device.
[0055] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.
Claims
1. A high-voltage direct-mounted energy storage system simulation device, comprising a simulation device host computer (1) and a real-time simulation device (2) that are communicatively connected to each other, characterized in that: The high-voltage direct-mounted energy storage system simulation device further comprises a protocol conversion device (3) and a user controller (4); the real-time simulation device (2) comprises a CPU processor (21) equipped with an energy storage battery model and an FPGA chip (22) equipped with a cascade topology module; the CPU processor (21) is communicatively connected to the FPGA chip (22); and the real-time simulation device (2) is communicatively connected to the user controller (4) via the protocol conversion device (3) and a physical IO interface.
2. A high-voltage direct-mounted energy storage system simulation device according to claim 1, characterized in that: The CPU processor (21) and the FPGA chip (22) communicate with each other at a high speed via PCIE.
3. A high-voltage direct-mounted energy storage system simulation device according to claim 1, characterized in that: The CPU processor (21) is an 8-core 3.8 GHz CPU processor.
4. A high-voltage direct-mounted energy storage system simulation device according to claim 1, characterized in that: The FPGA chip (22) is of UltraScaleKU115 model.
5. A high-voltage direct-mounted energy storage system simulation device according to claim 1, characterized in that: The protocol conversion device (3) is connected to the real-time simulation device (2) and the user controller (4) via optical fiber communication.
6. A high-voltage direct-mounted energy storage system simulation device according to claim 1, characterized in that: The real-time simulation device (2) is connected to the simulation device host computer (1) via Ethernet.
7. A high-voltage direct-mounted energy storage system simulation device according to claim 1, characterized in that: The protocol conversion device (3) is connected to a protocol conversion device host computer (5) via Ethernet.
8. A high-voltage direct-mounted energy storage system simulation device according to claim 1, characterized in that: The protocol conversion device (3) is encapsulated in a housing (31), the housing (31) is a square structure, an optical fiber interface (32) is provided in the housing (31), and the optical fiber is connected to the optical fiber interface (32) via an optical module.
9. A high-voltage direct-mounted energy storage system simulation device according to claim 8, characterized in that: The top and bottom of the shell (31) are both provided with heat dissipation holes (311) distributed in an array, a turbo fan (33) is also installed in the shell (31), and the optical fiber interface (32) is located in the heat dissipation area of the turbo fan (33).
10. A high-voltage direct-mounted energy storage system simulation device according to claim 1, characterized in that: The user controller (4) is also connected to the real-time simulation device (2) via CAN bus communication.