Simulation models for off-grid microgrid systems considering resilient operation
Abstract:

Offgrid Microgrids work in isolated mode and provide electricity to communities that do not have access to the primary grid and are in remote areas. Back-up generators are used to provide reliability and guaranteed operation in the event of contingencies. They are considered lines back-up, in the same way, these microgrids consider using different generators, whether renewable or not. The project aims to simulate operating a microgrid in isolated mode, minimizing the design and operation cost of the system with varying loads of active and reactive power demand provided every fifteen minutes in a day. This project contemplates contingency analysis of the off-grid microgrid system. The simulation will be carried out in the PowerWorld simulation software, and adapting the IEEE 13 Nodes distribution system as a base, with some modifications. This research considered the system's parameters, such as the Ohms law, Kirchoff's laws, resistances, inductances, and capacity of the lines, in addition to their line length. Furthermore, we used quadratic cost functions for the generators. We applied their operating limits, the type, and their modeling are taken into account and the location where they will be connected, considering that renewable generators can operate continuously. In contrast, Diesel generators work as a discreet system, respecting the ramp-up and ramp-down times.

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Paul Rafael B Sabandal
Yuly, Well done on the presentation and a nice-looking poster. Can you provide clear rationales why you chose to the PowerWorld and Homer in your simulations? How about additional software that are commonly used to assess power systems? For a non-expert, how accurate and/or representative are the simulations when compared to real-world applications? Paul
Sergio Armendariz
Hello Yuli,
I just have questions that I hoped you would help me clear out. First, what made you chose between PowerWorld and Homer to run the simulations? I'm not familiar with these softwares so I'm just curious.
Second, and regarding the comparison you made, why is it that model topology is a pro for powerworld but a con for homer?
Thank you!

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