Thermoeconomic installation limit of PV/WT hybrid energy systems for Off-grid islands

An ideal off-grid island can become 100% energy-sufficient if one installs renewable energy systems such as solar photovoltaic (PV) and wind turbine (WT) systems. However, the intermittent and uncertain nature of the power supply from renewable energy systems hinders a 100% autonomy level (AL) witho...

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Bibliographic Details
Published in:International journal of green energy 2017-09, Vol.14 (11), p.961-969
Main Authors: Ahn, Jongdeuk, Kim, Jong-Gyu, Seo, In-Yong, Roh, Jae Hoon, Song, Seung Heon, Song, Jeonghun, Song, Seung Jin, Yoo, Yungpil, Oh, Sidoek, Kwak, Ho-Young
Format: Article
Language:English
Subjects:
Autonomy level
battery size
hybrid energy system
off-grid islands
thermoeconomic installation limit
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Summary:An ideal off-grid island can become 100% energy-sufficient if one installs renewable energy systems such as solar photovoltaic (PV) and wind turbine (WT) systems. However, the intermittent and uncertain nature of the power supply from renewable energy systems hinders a 100% autonomy level (AL) without an infinite energy storage capacity. The thermoeconomic installation limit (TEIL) of a PV/WT hybrid energy system was studied using hourly weather data and the energy demand profile for off-grid islands. An appropriate battery size for the TEIL was also determined. Given the current installation cost of the hybrid energy system and the battery unit, the AL for a PV/WT hybrid energy system at the TEIL is calculated to be approximately 70%. Above the limit, the size of the energy storage unit and, correspondingly, the total annual cost of the PV/WT hybrid energy system increase sharply.
ISSN:1543-5075
1543-5083
DOI:10.1080/15435075.2017.1340296