一个海上风力驱动的直接空气捕获系统的动态建模和最佳控制方案,具有储能选项
Muhammad Faisal Shehzad1, Haris Ishaq2, Curran Crawfrod2
1Institute for Integrated Energy Systems (IESVic), University of Victoria, BC V8P 5C2, Canada.
The Science of the total environment
|July 9, 2025
概括
这项研究介绍了一种海上风力驱动的直接捕获空气系统,使用先进的能源存储和管理策略,以有效地最大限度地从大气中去除二氧化碳.
科学领域:
- 环境工程 环境工程
- 可再生能源系统可再生能源系统
- 碳捕获技术的技术
背景情况:
- 直接捕获二氧化碳 (DAC) 对减缓气候变化至关重要,但其能源需求带来了挑战.
- 使用化石燃料为DAC提供动力,从而抵消了净二氧化碳减排的好处.
- 可再生能源的整合,特别是海上风能,提供了一个可持续的替代方案,但面临着间歇性问题.
研究的目的:
- 提出和建模一个以海上风能为动力的直接空气捕获系统.
- 通过先进的能源储存系统 (ESS) 和能源管理战略 (EMS) 来应对可变风能供应的挑战.
- 为了最大限度地减少二氧化碳,同时尊重系统的运行约束和动态.
主要方法:
- 开发一个海上风力DAC系统的动态模型,并配合基于电池的ESS.
- 实施一种新的EMS来管理系统状态 (OFF,吸附,脱附) 作为单独的负载,以实现最佳的风能利用.
- 对DAC系统关于风力发电可用性的季节性灵活性分析.
主要成果:
- 使用可变的海上风能为直接捕获空气系统供电的证明可行性.
- 拟议的EMS有效地管理系统操作,以在波动的电源供应下最大限度地捕获二氧化碳.
- 数字结果验证了系统在不同季节的性能和操作灵活性.
结论:
- 海上风能,当与先进的ESS和EMS集成时,为大规模的CO2直接空气捕获提供了可行的途径.
- 拟议的动态模型和运营策略提高了可再生能源供电DAC系统的效率和可靠性.
- 这种方法为实现净负二氧化碳排放和缓解气候变化提供了一个有希望的解决方案.
相关概念视频
01:24Wind Turbine Machine Models
216
In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
216
01:17Turbine-Governor Control
401
Turbine-governor control is crucial for maintaining power system stability by balancing turbine mechanical power output with electrical load demand. This mechanism ensures that generator frequency and rotor speed are within acceptable limits during load variations. Turbine-generator units store kinetic energy due to their rotating masses; this energy is released to meet the load requirement when the load increases. The electrical torque of turbines rises to meet the demand, whereas the...
401
01:14Conservation of Energy in Control Volume
912
Consider a turbine operating under steady-flow conditions. The control volume is drawn around the turbine, with fluid entering at one point and exiting at another. The turbine extracts energy from the fluid, which performs mechanical work (shaft work).
For steady flow systems, the time derivative of the stored energy becomes zero since there is no energy accumulation within the control volume. This simplifies the energy equation to:
For steady flow systems, the time derivative of the stored energy becomes zero since there is no energy accumulation within the control volume. This simplifies the energy equation to:
912
01:27Energy Considerations in Open Channel Flow
177
Open channel flow, where a fluid flows with a free surface exposed to the atmosphere, is primarily governed by gravitational and surface effects, distinguishing it from closed conduit or pipe flow. In open channels such as rivers, canals, and artificial channels, energy analysis provides valuable insights into flow behavior and the relationship between depth, velocity, and slope.Specific Energy and Flow DepthIn open channel flow, the specific energy, E, combines the gravitational potential...
177
01:21Generator Voltage Control
248
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand,...
248
01:17Open and closed-loop control systems
1.0K
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
1.0K