Assessment of renewable energy based micro-grids for small communities

Download
2016-7
Sadati, S.M. Sajed
Deploying renewable energy systems to supply electricity faces many challenges related to cost and variability of the renewable resources. One possible solution to these challenges is to hybridize renewable energy systems with conventional power systems and include energy storage systems. In this study, the feasibility analysis of two cases for electricity generation systems as (i) photovoltaic (PV)-battery-pumped hydro system (PHS) and (ii) PV-wind-battery are presented as a Renewable Energy Micro-Grid (REMG) for a university campus-scale community on a Mediterranean island. The island has an isolated grid which generally utilizes fuel-oil based steam and diesel electric generators. Models for PV, wind turbine, battery and PHS systems are presented to estimate energy production, and net present cost (NPC) and levelized cost of electricity (LCOE) as economic metrics in the feasibility analysis. As a case study, Middle East Technical University Northern Cyprus Campus (METU NCC) with an average power demand of about 1 MW is considered. A parametric study is performed using a newly developed model for combining short-term and long-term energy storage systems integrated with PV systems for case (i) and HOMER software for case (ii) to determine the sizes of the components for the REMG. Both models are using hourly time-steps. In case (i), battery and PHS are considered as short- and long- term storage systems. For the studied ranges and considering the availability of water resources required for PHS, the lowest NPC of 40.65M USD is found for a configuration with 2.7 MW PV, 0.3 MWh battery and 2.5 MWh PHS. In case (ii), among all the configurations, two alternate configurations are proposed, one with storage and one without storage. Both configurations have identical NPCs of 38.3M USD, renewable energy fractions of 38% and 36%, respectively, and avoid approximately 4000 tons of CO2 emissions per year. The system without storage consists of a 2 MW PV plant and 3 MW wind power system, and the system with storage consists of a 2 MW PV system, 3.75 MW wind power system and a 1 MWh battery. In both cases, the resulting LCOE is approximately 0.15 USD/kWh whilst the electricity tariff for METU NCC is approximately 0.175 USD/kWh.

Suggestions

Sizing of Photovoltaic-Wind-Battery Hybrid System for a Mediterranean Island Community Based on Estimated and Measured Meteorological Data
Sadati, S. M. Sajed; Jahani, Elham; Taylan, Onur; Baker, Derek Keıth (2018-02-01)
Deploying renewable energy systems (RES) to supply electricity faces many challenges related to cost and the variability of the renewable resources. One possible solution to these challenges is to hybridize RES with conventional power systems and include energy storage units. In this study, the feasibility analysis of a grid-connected photovoltaic (PV)wind-battery hybrid system is presented as a microgrid for a university campus-scale community on a Mediterranean island. Models for PV and wind turbine syste...
Sizing of a Photovoltaic-Wind-Oil Shale Hybrid System: Case Analysis in Jordan
AL-Ghussain, Loiy; Taylan, Onur; Fahrioglu, Murat (2018-02-01)
The integration between renewable energy systems (RESs) and oil shale system ensures reliable power generation source with a competitive energy generation cost when compared to costs of conventional systems. In addition, this integration will prevent considerable amount of CO2 emissions. This study aims to determine the size of a grid-tied hybrid system in Al-Tafilah, Jordan that maximizes the yearly overall fraction of demand met with levelized cost of electricity (LCOE) equal to or lower than the local co...
Adaptation of Renewable Based Power Plants to the Energy Market Using Battery Energy Storage Systems
Durna, E.; Parlak, D.; Logoglu, E. Uz; Gercek, C. O. (2014-10-22)
This paper presents a method for the adaptation of a wind power plant to the energy market using battery energy storage systems (BESS) to show the feasibility of using fast-response batteries, and to calculate its payback period. The proposed method is also used to investigate the optimum battery size according to the installed capacity of the wind farm based on the price and wind forecast, and arbitrage opportunity so as to maximize the profit of the investor. The profit obtained from the market by the bat...
Smart Solar Micro-grid Using ZigBee and Related Security Challenges
Qadir, Zakria; Tafadzwa, Vincent; Rashid, Haroon; Batunlu, Canras (2018-11-02)
Renewable energy is needed to preserve a sustainable environment. One particular form of renewable energy (solar energy) is one of the most important and cost-effective solutions to the energy crisis. In this study, efficient solar energy management using ZigBee technology shall he discussed. The system informs the user when solar panels produce excess power before supplying it to the surrounding users, thus making the supplier a prosumer instead of a consumer. GSM which is used to monitor energy usage over...
Preliminary Study on Site Selection For Floating Hybrid Wind And Solar Energy Systems In Turkey
Yerlikaya, Nevzat Can; Çakan, Çağatay; Başara, Ilgın; Caceoğlu, Eray; Huvaj Sarıhan, Nejan (2021-09-08)
It is well-known that even though fossil fuels are the main energy resource in Turkey, use of sustainable energy resources such as wind and solar energy has been increasing in the past years and expected to continue on this trend in the next years to come. The suitable land for land-based wind turbines and photovoltaic (PV) systems could also be convenient for various other purposes, such as agriculture. This study aims to investigate the suitable sites for a combined floating wind and solar systems in the ...
Citation Formats
S. M. S. Sadati, “Assessment of renewable energy based micro-grids for small communities,” M.S. - Master of Science, Middle East Technical University, 2016.