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Microgrids

PV system design using SMA sunny design web

Bertrand Cornélusse
[email protected]

Goals of this assignment

Learn how to size a PV system installation

we will use a free tool from SMA: https://www.sunnydesignweb.com/
we will dive into the details of the PV system installation

Side goals:

evaluate the potential of the ULiège buildings
compare to their consumption
evaluate the benefit of storage

0. Choose a building

B28
B5a
B7a
B8
B15
B28
B30
B31
B33
B62

1. Sizing to feed electricity to the grid

All the energy generated is fed to the grid at a given fee of 130 EUR / MWh.

Use an all-in cost of the PV installation of 800 EUR/kWp (relatively large installation).

No storage is needed.

Design the installation using the 3D modeling tool

Delimit the surfaces
Place a maximum of PV panels

Choose the inverters

Organize the PV strings to meet a trade-off between cost and energy yield (for the amount of PV panels defined previously)
What are the constraints to connect the strings
What is a polystring configuration?
What is the minimal power rating of the inverter you can use for the given amount of PV panels? What is his energy yield?

2. Sizing with self-consumption

Get the consumption data from ULiège building assigned to you: https://dox.uliege.be/index.php/s/lKWKs02hQzuopm0
Insert them in SMA sunny design web in a self-consumption design
Analyze the difference with the "feed to grid case."
You buy electricity at 150 EUR/MWh
There is no net metering, it is a dual-flow meter

3. Sizing with storage and self-consumption

Redo the analysis and determine how much storage power/energy you would need as a function of the costs
use costs of 300 EUR/kWh and 100 EUR/kW for the batteries

4. Sizing with off-grid mode

Redo the analysis and determine how much storage power/energy and diesel generator you would need as a function of the costs
use costs of 300 EUR/kWh and 100 EUR/kW for the batteries

Report

Write a little presentation with your answers to the listed questions
Include SMA sizing reports in a zip (with meaningful names for the different analyses).