Tuning a Cascaded Online Feedback Optimization Controller for Provision of Distributed Flexibility

International Conference on Smart Energy Systems and Technologies (SEST), pp. 1–6

Abstract

Coordinating a high number of flexibility providing units (e.g. to provide ancillary services for the transmission system) across various grid layers requires new control concepts. A flexibility request at a point of common coupling can be met by utilizing a cascaded control structure based on online feedback optimization. In this paper the influence of the parameterization of the individual controllers on the performance of the hierarchical flexibility provision is studied on a three-level test system. The results show a high interdependency between the choice of control parameters of one controller and the behavior of other controllers as well as a significant impact on the accuracy and speed of flexibility provision. With a careful tuning, a cascaded structure based on online feedback optimization can achieve efficient vertical coordination of flexibility providing units.

Authors 5

1. Irina Zettl Aachen

   RWTH Aachen University

   Affiliation as printed

   IAEW at RWTH Aachen University,Aachen,Germany

2. Florian Klein-Helmkamp Aachen

   RWTH Aachen University

   Affiliation as printed

   IAEW at RWTH Aachen University,Aachen,Germany

3. Florian Schmidtke Aachen

   RWTH Aachen University

   Affiliation as printed

   IAEW at RWTH Aachen University,Aachen,Germany

4. Lukas Ortmann

   University of Applied Sciences Rapperswil · OST - Ostschweizer Fachhochschule

   Affiliation as printed

   OST - Eastern Switzerland University of Applied Sciences,Rapperswil,Switzerland

5. Andreas Ulbig Aachen

   RWTH Aachen University

   Affiliation as printed

   IAEW at RWTH Aachen University,Aachen,Germany