File(s) not publicly available

Economic and environmental modeling of a photovoltaic-wind-grid hybrid power system in hot arid Australia

journal contribution
posted on 06.12.2017, 00:00 by Gang Liu, Mohammad Rasul, Amanullah Maung Than Oo, Mohammad Khan
Increased concern about energy crisis and environmental issues has revitalized interest in the application of renewable energy technologies. For ensuring steady and continuous electricity generations, a hybrid power system (HPS) including more than one renewable energy elements is introduced. In this paper, environmental and economic analyses are used to discuss the sustainability of a HPS. An investigation is made on small-scale operations of 100kWh per day HPS as a grid-assisted power generation consisting of solar (photovoltaic) and wind energy. A comparison is drawn among the different configurations of a grid-connected HPS operation focusing on environmental and economic impacts. Emissions and the renewable energy generation fraction (RF) of total energy consumption are calculated as the main environmental indicator. Costs including net present cost (NPC) and cost of energy (COE) are calculated for economic evaluation. To simulate long-term continuous implementation of the HPS, the hourly mean global solar radiation and wind speed data of 2007, from Alice Spring (23.70 S, 133.88 E) of Australia, are used as an example of a typical hot arid climate. The monthly solar exposure between 13.31 and 21.3 2 MJ/m2/day and mean wind speed of 7.13 m/s in 2007 is considered for simulation The Micropower Optimization Model software HOMER developed by the National Renewable Energy Laboratory, USA is used for simulation. It is found that, for Alice Spring arid climates, the optimum results of HPS show a 64.3% reduction of emissions including CO2, SO2, and NOx. Renewable fraction of the optimized system is 54%. It is also found that the HPS has benefits of cost saving. The reduced NPC and COE are only equal to about 85.3% of energy consumption from standard grid. In addition, through a set of sensitivity analysis, it is found that the wind speed has more effects on the environmental and economic performance of a HPS under the specific climate.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

1

Issue

1

Start Page

15

End Page

22

Number of Pages

8

eISSN

1923-7316

ISSN

1923-7308

Location

Canada

Publisher

International Association for Sharing Knowledge and Sustainability

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Faculty of Sciences, Engineering and Health; Institute for Health and Social Science Research (IHSSR); Institute for Resource Industries and Sustainability (IRIS); Power Engineering Research Group;

Era Eligible

Yes

Journal

International journal of thermal & environmental engineering.