Real-time simulation丨Microgrid simulation test system solution

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Real-time simulation丨Microgrid simulation test system solution [Copy link]

Application Background

A microgrid is a small, independent and autonomous power system formed by combining centralized or distributed power generation equipment with energy storage equipment in a local area. It can be interconnected with the main power grid or independently powered when needed.

1. Rational use of renewable energy: With the rapid development and widespread application of renewable energy such as solar and wind energy, microgrids have become a flexible solution. Microgrids can connect distributed renewable energy equipment (such as solar panels and wind turbines) with traditional energy networks to achieve distributed production and use of clean energy.
2. Enhance the reliability of power supply: Microgrids can provide higher reliability of power supply. When the main grid fails or a power outage occurs, the microgrid can continue to supply power through its internal power generation and energy storage system, ensuring the normal operation of key equipment and reducing the impact of power outages on users.
3. Reduce power loss: There is transmission loss in the traditional power distribution system, which leads to energy waste. Microgrids can significantly reduce power loss and improve energy efficiency by placing power generation equipment near power loads and reducing the need for long-distance power transmission.
4. Power load management and optimization: Microgrids can monitor and manage power loads in real time, making the match between power demand and supply more effective. Through the application of intelligent control systems, microgrids can optimize the allocation of different loads and maximize energy efficiency.
5. Improve the sustainability and environmental friendliness of electricity: The application of microgrids can promote the use of sustainable energy, reduce dependence on traditional fossil fuels, reduce greenhouse gas emissions, and help solve global energy and environmental problems.

The application background of microgrid mainly covers the increase of renewable energy, reliability of power supply, reduction of power loss, power load management and optimization, and promotion of sustainable energy. These factors together have led to more and more widespread attention and adoption of microgrid in practical applications.

Real-time simulation of microgrids

Real-time simulation technology gives microgrid simulation higher authenticity, visualization and flexibility. It provides powerful tools and methods for the design, operation and optimization of microgrids, and is of great significance to the development of microgrid technology.

1. Real-time simulation of microgrids refers to a technology in which the operation and response of the system can be simulated and evaluated at a near real-time speed during the simulation process. It can provide higher simulation precision and accuracy, allowing researchers and engineers to observe and understand the operating characteristics of the microgrid system more realistically.
2. In real-time simulation, the status and behavior of each component and subsystem of the microgrid are updated and calculated at a near real-time speed. This includes the interaction between power generation equipment (such as solar panels, wind turbines, etc.), energy storage devices (such as batteries, supercapacitors, etc.), loads and the grid. The system's control algorithms and strategies also run in real time to intelligently adjust and optimize the operation of the microgrid based on current power demand, energy supply and market conditions.
3. Real-time simulation can also simulate the real-time status monitoring and fault handling of microgrid systems. For example, when a device in the system fails or the power load suddenly increases, real-time simulation can simulate the corresponding response and countermeasures, including automatic switching of backup power sources, dynamic adjustment of the output power of power generation equipment, real-time monitoring and alarm, etc.
4. Through real-time simulation, researchers and engineers can more accurately evaluate the operating characteristics of microgrid systems under different operating conditions, predict and verify the stability, reliability and economy of the system. In addition, real-time simulation can also be used to test and verify different control strategies to optimize the energy management, power scheduling and supply and demand balance of microgrids.

Microgrid system topology

The system topology of a microgrid basically includes the following parts: wind power generation system, photovoltaic power generation system, charging piles, energy storage system and residential loads.

1. The combination of wind power generation system and photovoltaic power generation system can achieve energy diversification and complementarity, and increase the stability and reliability of the microgrid system. They can be flexibly configured and adjusted according to the resource conditions, load requirements and operation strategies of the microgrid to achieve optimal energy management and supply and demand balance.
2. Energy storage systems provide microgrids with flexible, reliable and sustainable energy management. They can balance supply and demand, adjust frequency, reduce peak-to-valley differences, provide backup power and smooth energy fluctuations to optimize microgrid energy utilization and operating performance. The application of energy storage systems will make microgrids more intelligent and efficient, and promote the large-scale application of renewable energy and the sustainable development of microgrids.
3. Charging piles and residential loads play key roles in microgrids, such as energy dispatch, energy storage, energy trading, energy demand and energy flexibility. Their effective management and optimization can achieve energy balance in microgrids, improve energy utilization efficiency and load management. The following are the charging station management system and residential load management system in the microgrid control interface. Users can customize and simulate their main parameters.

EasyGo-based solution

Microgrid real-time simulation solution based on PXIBox

Based on the super CPU+FPGA computing accuracy of PXIBox, the power electronic topology structure parts such as wind power generation system, photovoltaic power generation system, energy storage system, charging pile system, and residential load of the microgrid topology system can be run on FPGA. The rich IO interface can realize PXIBox self-closed loop testing, and the minimum real-time simulation step can reach the us level.

The real-time model architecture of PXIBox is shown below:

The model architecture is highly consistent with the hardware architecture

Test content

Testing the Energy Scheduling Controller

Use a real controller to connect IO with PXIBox, and simulate various power generation equipment (solar photovoltaic, wind turbine, gas generator, etc.) in the microgrid through PXIBox simulation, simulating their generation capacity, response time, output power and performance parameters, as well as the supply and load demand of various energy resources in the microgrid. Test whether the real-time simulation energy can achieve a state of supply and demand balance.

In addition, it can also simulate the energy storage system (battery, supercapacitor, etc.) in the microgrid, including evaluation of energy storage capacity, charging and discharging efficiency, power response and energy storage strategy, etc. This can help determine the operation strategy and optimal operation mode of the energy storage system to optimize the system's energy management and supply and demand balance.

In real-time simulation, the impact of various risk factors on microgrids can be simulated and evaluated, such as weather changes, equipment failures, and demand fluctuations. Through risk assessment simulation, potential risks can be predicted and responded to in advance, and corresponding measures can be taken to enhance the robustness and reliability of microgrids.

Through real-time simulation, the operating status of the microgrid can be displayed in real time, and different factors and operating strategies can be adjusted and optimized. This helps users better understand the operating characteristics of the microgrid, improve energy management strategies, and maximize the benefits of the microgrid.

Real-time simulation system self-closed loop physical picture

Welcome interested engineers to communicate with us!

Jacktang

The microgrid simulation test system looks interesting. How is the simulation software charged?