Target-oriented robust optimization of a microgrid system investment model
Received date: 20 Dec 2017
Accepted date: 20 Mar 2018
Published date: 05 Sep 2018
Copyright
An emerging alternative solution to address energy shortage is the construction of a microgrid system. This paper develops a mixed-integer linear programming microgrid investment model considering multi-period and multi-objective investment setups. It further investigates the effects of uncertain demand by using a target-oriented robust optimization (TORO) approach. The model was validated and analyzed by subjecting it in different scenarios. As a result, it is seen that there are four factors that affect the decision of the model: cost, budget, carbon emissions, and useful life. Since the objective of the model is to maximize the net present value (NPV) of the system, the model would choose to prioritize the least cost among the different distribution energy resources (DER). The effects of load uncertainty was observed through the use of Monte Carlo simulation. As a result, the deterministic model shows a solution that might be too optimistic and might not be achievable in real life situations. Through the application of TORO, a profile of solutions is generated to serve as a guide to the investors in their decisions considering uncertain demand. The results show that pessimistic investors would have lower NPV targets since they would invest more in storage facilities, incurring more electricity stock out costs. On the contrary, an optimistic investor would tend to be aggressive in buying electricity generating equipment to meet most of the demand, however risking more storage stock out costs.
Lanz UY , Patric UY , Jhoenson SIY , Anthony Shun Fung CHIU , Charlle SY . Target-oriented robust optimization of a microgrid system investment model[J]. Frontiers in Energy, 2018 , 12(3) : 440 -455 . DOI: 10.1007/s11708-018-0563-1
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