1. Hierarchical provision of distribution grid flexibility with online feedback optimization.
- Author
-
Klein-Helmkamp, Florian, Zettl, Irina, Schmidtke, Florian, Ortmann, Lukas, and Ulbig, Andreas
- Subjects
- *
REACTIVE power , *POWER resources , *POINT set theory , *PSYCHOLOGICAL feedback - Abstract
Utilizing distribution grid flexibility for ancillary services requires the coordination and dispatch of requested active and reactive power to a large number of distributed energy resources in underlying grid layers. This paper presents an approach to hierarchically dispatch flexibility requests based on Online Feedback Optimization (OFO). We implement a framework of individual controllers coordinating actors, contributing to flexibility provision, to track a requested operating point at the interface between grid layers. The framework is evaluated in terms of performance during coordination and possible interaction between individual controllers, both central and distributed. Results show high reliability and robustness of the OFO controllers as well as an efficient dispatch of active and reactive power. Its computational efficiency and capabilities in set point tracking during online grid operation are making OFO a promising approach to the flexibility dispatch problem. • Hierarchical control of distributed flexibility with Online Feedback Optimization. • Provision of ancillary services across multiple grid layers. • Accurate set point tracking by the proposed control structure. • Robustness against model mismatch and disturbances through closed loop control. • Simulative and experimental case studies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF