"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
Siehe auch (see also):
Marcello Schifani, Eberhard Waffenschmidt, Reza Iravani,
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.