EEET 2334/35 Microgrid Design Assignment

Design and Feasibility Analysis of a Residential Microgrid

A. Objectives

?  Design of a residential micro-grid with practical and market data

?  Feasibility analysis of a residential micro-grid with practical and market data

?  Comparison of different dispatch strategies of a residential micro-grid

?  Benchmarking a residential microgrid

?  Professional level user experience with the Microgrid design software HOMER Pro.

B. Design Specifications:

Design a stand-alone/grid-connected residential microgrid that meets the following specifications/requirements:

1.You should design the microgrid for your current place of residence. A location in Victoria is preferred. However, any location in Australia is OK if you have the smart meter load data for that location/address. Please mention the address of the location for which you are designing the microgrid. If you are using load data supplied by your course coordinator, please use the postcode.

2.      The system must comprise of a back-up generator (diesel or gas microturbine), a utility grid (only for the grid- connected system), a PV system with MPPT and inverter, a bi-directional converter, and a battery. A wind turbine and hydrogen energy storage are optional.

3. HOMER Pro has total 6 dispatch strategies. You should compare the results of at least four (4) dispatch strategies for both grid-connected and stand-alone microgrids. Some dispatch strategies cannot be applied to both grid-connected and stand-alone designs. Based on the results of optimal component sizes and cost, you should identify the best dispatch strategy for your design in both grid-connected and stand-alone operation modes. You should have proper discussions to support your conclusion.

4.Utility electricity prices and PV feed-in tariffs should be collected from ( You should generate the design results based at least on two electricity rates. Namely: flat rate and time of use (ToU) rate.

5.You should use a real residential load profile (smart meter data). You should provide the appropriate reference for the load profile (retailer or distribution service providers). At least one year�s worth of data is expected. If you are collecting data which have less than the one-year time frame, you can use the HOMER Microgrid tool Load data synthesiser to create synthetic load data. �Details can be found in the HOMER help files.

6.       You should simulate the system with and without the utility grid and compare the results.

7. The presence of a back-up generator is a must in your system. You should use the current fuel price rate (diesel or gas price, market rate) for the back-up generator and provide a necessary reference.

8. Wind resource profile is available through the Bureau of Metrology (BOM) website for Victoria. You can collect solar resource profiles too. However, they usually come in daily average and are not helpful to clearly identify the daily changes in weather. You can use HOMER to create the hourly wind, insolation, and temperature resource data files for a specific location.

9.      You should collect and provide real market price/rates for all the electrical components, equipment, their O&M costs, and their maintenance costs with appropriate references given in the report. You do not need to find the best rate or price. Any reasonable rate or price would be sufficient with appropriate assumptions.

10.     You should justify and validate all your design choices.

11. Individual design and report submission is preferable for this assignment. However, completing the assignment as group is also acceptable. A maximum of two students is allowed as a group submission. Please clearly mention the contribution percentages and domains when submitted as a group.

C. Report Writing & Discussions

Write a report based on the simulation/optimisation results. The report should show some of the points or more as follows:

â–ª  Load & resources profiles (plots, tables, etc.)

â–ª    Power generation and consumptions profiles on special days (e.g., boxing day) and the seasonal changes (e.g., winter and summer)

â–ª  The feasible system architecture according to the dispatch strategies and cost

â–ª  A comparison between the feasible systems. With or without grid and with or without renewable generators.

â–ª  Comparison between different dispatch strategies.

â–ª  Days worth of energy storage, the optimal size of energy storage, meeting the 95% or 99% of the load demand-

these discussions points should be covered.

D. Assessment Criteria, Report Writing & Discussions

This assignment will be assessed according to the following criteria (150 marks total) and will be counted 30% towards the final grade. 5% of the marks is allocated to correct data and model file submissions. The data files are: insolation.txt/xls/csv; load.txt/xls/csv; temperature.txt/xls/csv. If you use a wind turbine, then windspeed.txt/xls/csv. The model file is: yourmicrogirdmodelname.homer (*.homer file type). Your model and design files will be checked with these data files.

You will have three sperate submission links: (a) data file submissions; (b) model file submissions, and (c) report submissions.

Design Report (150 marks): You are required to submit one design report which should include essential HOMER plots, tables, comparisons, simulation block diagrams and annotations/discussions relating to the optimisations results as well as any other technical data and relevant information and justification. The final report may consist of the following sections as a simple guideline: Title, Introduction, Homer Modelling, Simulation Data Resource & Criteria, and Optimisation Results, Practicality of the Optimisation Results, Discussions, Conclusion, References, Appendix. Page limit: Maximum 25 pages (cover page and appendix are not counted in the limit). Minimum font-size: 10 pt.

You should submit the report via the assignment submission links. All submission links are �TurnItin� links. Maximum 20% similarity is accepted. If the similarity is over 20%, marks will be deducted, and the reports with similarities over 30% will get zero marks. Similarity based on same report submission by both group members are not counted in the 20% or 30% similarity check.

 If you are submitting as a group, only one submission is necessary, and it should have all students� names, contributions and student IDs on the cover page. Remember for a group, only one submission is necessary. Double submission will create a 100% similarity.

The report is due: by Sunday, October 31, 23:59 PM

You should submit the report (*.pdf or *.doc or *.doc ), data files (*.txt/xls/csv), and model file (*.homer) separately through course canvas assignment submission links. Don�t mix them up.

The assignment submission deadline is Sunday, October 31, 23:59 PM. Late submission will incur 10%

deduction/day as per the RMIT late submission policy.

Marking Criteria/Rubrics are given in the next page.