Publikationen - Netze für Erneuerbare Energien

Marcello Schifani,
"Supervisory Control Analysis of AC- and DC-Microgrids in a Real-Time Digital Simulation Platform",
Master Thesis, TH-Köln, perfomed at University of Toronto, Canada, 14.Jun.2017

This thesis discusses local and supervisory control strategies, and requirements for mirogrids. A robust hierarchical control structure that allows smooth transitions of the microgrid between the grid-connected and islanded mode is proposed.
In order to operate a microgrid in islanded mode, a centralized supervisory control structure is presented that is composed of a simple Decentralized Energy Resources (DER) coordination logic, the aforementioned local controllers, a voltage controller, and an open-loop frequency controller.
To perform studies on the proposed control structures, the simulation tool PSCAD/EMTDC was used to evaluate the controller performance. Verification in a real-time digital simulator confirms the findings. The proposed control strategies appear to be robust which suggests their applicability for a use in microgrid structures.
Additionally, first explorations of a novel coordinated control structure for direct current (DC)-microgrids were performed on PSCAD/EMTDC.


> Master Thesis: PDF-Dokument (11.9 MB)


> Netzregelung

Siehe auch (see also):

Marcello Schifani, Eberhard Waffenschmidt, Reza Iravani,
"Supervisory Control of Microgrids in Grid-Connected and Islanding Mode – Investigations Using a Real-Time Digital Simulation Platform",
6th International Energy & Sustainability Conference (IESC 2017), 19.-20.Oct.2017, Farmingdale, New York, USA.

Schematic of the investigated AC-grid structure.

E.Waffenschmidt, 21.Oct. 2017