控制器整定对基于反馈优化的级联灵活性提供的影响
Influence of Controller Tuning on Cascaded Flexibility Provision with Feedback Optimization
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中文总结 AI 辅助
本文研究控制器整定对基于OFO的级联灵活性提供性能的影响，通过多案例分析发现控制器参数选择影响灵活性提供的精度、速度及不同层级控制器的相互作用，最终表明精心整定可实现灵活性单元的高效垂直协调。
中文摘要 AI 辅助
在不同电网层级中协调大量灵活性提供单元需要创新的控制概念，例如使主动配电网能为输电系统提供辅助服务。基于在线反馈优化（Online Feedback Optimization, OFO）的级联控制结构，可通过跟踪公共连接点的有功功率设定值，满足该点的灵活性需求。本文通过三个案例研究，分析各控制器参数化对分层灵活性提供性能的实际影响：第一个案例研究包含作用于1个中压和2个低压电网的两级控制器级联，第二个案例研究包含作用于低压到高压层级的三级级联。结果表明，级联中单个控制器的性能高度依赖于其他控制器控制参数的选择，参数化选择对灵活性提供的精度和速度有显著影响；第三个案例研究探讨了模型失配和测量噪声对参数合理选择的影响。总体而言，精心整定可实现基于OFO的级联结构对灵活性提供单元的高效垂直协调。
英文摘要
The coordination of a large number of flexibility-providing units across various grid layers requires innovative control concepts. This is needed, e.g., to allow active distribution systems to provide ancillary services for the transmission system. A cascaded control structure based on Online Feedback Optimization (OFO) can be used to meet flexibility requests at the point of common coupling by tracking an active power set point at the point of common coupling. This paper investigates the practical influence of the parameterization of the individual controllers on the performance of the hierarchical flexibility provision in three case studies. One case study includes a two-level controller cascade acting on one medium and two low voltage grids, and the other one includes a three-level cascade acting on low to high voltage levels. The results show that the behavior of one controller is highly dependent on the choice of control parameters of the other controllers in the cascade. Additionally, the choice of parametrization has a significant impact on the accuracy and speed of flexibility provision. A third case study investigates the effects of model mismatch and measurement noise on the appropriate selection of parameters. Overall, careful tuning enables the efficient vertical coordination of flexibility-providing units with a cascaded structure based on OFO.
