Development of an integral model for RENE based electrical microgrids located in remote rural communities
Tutor / director / evaluatorGomis Bellmunt, Oriol
Document typeMaster thesis
Rights accessOpen Access
The lack of electricity is one of the main problems in the development on the rural com-munities. The access to electricity can be achieved through the implementation of electricmicrogrids. A microgrid is one of the most indispensable elements of smart power systemsto improve the reliability and resilience of energy supply.Off-grid microgrids are among the most viable solutions for electrification of remote areas,islands, and regions to which extension of the main utility grid is costly. Expansion planningof off-grid microgrids requires a concrete business model to ensure that affordable energy issupplied to customers . It is necessary that these microgrids will be efficient, economicand reliable.In order to achieve the expected microgrids characteristics, the purpose of the present Mas-ter’s Thesis is the development of an integral model for the sizing and costing of Low VoltageDirect Current (LVDC) Electrical Microgrids, based on Renewable Energy (RENE) Tech-nology. The microgrid sizing implies the development of a technical model and the Microgridcosting implies the development of an economic model. The main objective in the develop-ment of both models is to find an optimal configuration for the PVSHS, achieving a balancebetween the technical and the economical characteristics of the microgrid.The mentioned Model it is based on a real case of study which implements PhotovoltaicSolar Home Systems (PVSHS) in a LVDC Microgrid. The Microgrid is located in a RemoteRural community, where the access to the electrical main Grid is not always possible. In thepresent case of study the real location is in the city of Dhaka, capital city of Bangladesh.The corresponding methodology is based in the development of a MATLAB Code, whichincludes a general Sizing Method for Microgrids and the general Economic Method, whichachieves the calculation of the correspondent LCOE of the technology. Several scenarioswill be analyzed, taking into account different parameters of the Microgrid namely differentcable configurations, number of PV Panels, voltage drop and cable sections.The main results obtained in the Sizing Methodology, were in terms of the number of PVPanels and the section and the length of Cable utilized. Due to the little amount of energynecessary to cover the demand, it is possible to use a minor number of PV Panels than theconsider in previous studies. Besides that, the importance of the cable in final the designand in the cost of the microgrid is crucial. For this reason, two different cable configurationswere analyzed. In terms of the Economical Analysis the main result is related with theobtained LCOE value and the inputs utilized in order to calculated it. A new LCOE modelis developed for this kind of microgrids due to the correspondent expenditures can not beobtained from general reports.