基于ESKF和MPC的CFBB燃烧系统的灵活最佳控制
Lei Han1, Lingmei Wang1, Enlong Meng2
1School of Computer and Information Technology, Shanxi University, Taiyuan 030006, China.
Sensors (Basel, Switzerland)
|February 26, 2025
概括
本研究介绍了参与电网调度的燃煤发电机组的增强控制策略. 使用扩展状态卡尔曼波器 (ESKF) 的新模型预测控制 (MPC) 方法,在灵活运行时显著提高了控制性能和稳定性.
科学领域:
- 电力系统工程 电力系统工程
- 控制理论 控制理论
- 燃烧科学 燃烧科学
背景情况:
- 燃煤循环流化床 (CFB) 单元对于电网稳定性至关重要,特别是随着可再生能源集成的增加.
- CFB单元的灵活操作带来了诸如控制性能降低和信号干扰等挑战.
- 现有的控制策略与CFB燃烧系统固有的复杂动态和干扰作斗争.
研究的目的:
- 开发一个先进的控制方案,以提高燃煤CFB单元的灵活运行.
- 为了增强实时状态和干扰估计,以实现更准确的系统建模.
- 为了优化控制信号的生成,以更好地控制主蒸汽压力和床温度调节.
主要方法:
- 提出了一个与扩展状态卡尔曼波器 (ESKF) 集成的模型预测控制 (MPC) 框架.
- 使用ESKF进行实时选和系统状态和干扰的联合估计.
- 实现了协调的回退视界优化,以最大限度地减少输出偏差和控制信号增量.
主要成果:
- 与PI,LADRC和标准MPC相比,拟议的ESKF-MPC战略显示出优越的跟踪,防干扰和稳定性.
- 在±30%的参数干扰下,主要蒸汽压力和床温度的调整时间显著减少.
- 据ESKF-MPC方法显示,总绝对误差积分 (ITAE) 指标值较小且更加集中,表明强化了稳定性.
结论:
- 据了解,ESKF-MPC战略为燃煤CFB单元的灵活运行提供了强大而有效的解决方案.
- 这种先进的控制显著提高了系统稳定性,减少了超标,并提高了信号跟踪的准确性.
- 这些发现表明,整体燃烧系统控制性能得到了显著改善,促进了更深层次的新能源吸收.
相关概念视频
01:28Load-frequency control
114
Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
114
01:22Controller Configurations
81
Controller configurations are crucial in a car's cruise control system because they manage speed over time to maintain a consistent pace regardless of road conditions, thereby meeting design goals. In traditional control systems, fixed-configuration design involves predetermined controller placement. System performance modifications are known as compensation.
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
81
01:25Control Systems: Applications
552
Electrical engineering plays a pivotal role in our daily lives, with control systems at the heart of many applications, from home appliances to sophisticated space shuttles. Control systems manage and regulate the behavior of devices and processes, ensuring they function safely, correctly, and efficiently.
In modern vehicles, control systems manage various functions to enhance performance and safety. The steering wheel and accelerator are primary inputs in a car's control system. The...
In modern vehicles, control systems manage various functions to enhance performance and safety. The steering wheel and accelerator are primary inputs in a car's control system. The...
552
01:26Feedback control systems
270
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
270
01:10Control Systems
1.0K
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
At the heart...
1.0K
01:27Time and frequency -Domain Interpretation of PI Control
96
Proportional-Integral (PI) controllers are essential in many control systems to improve stability and performance. They are commonly used in everyday devices like thermostats to enhance system damping and reduce steady-state error. When the zero in the controller's transfer function is optimally placed, the system benefits significantly in terms of stability and accuracy.
Acting as a low-pass filter, the PI controller slows the system's response and extends settling times. This requires...
Acting as a low-pass filter, the PI controller slows the system's response and extends settling times. This requires...
96