scholarly journals Comparative Study of Different Methods for Estimating Weibull Parameters: A Case Study on Jeju Island, South Korea

Energies ◽  
2018 ◽  
Vol 11 (2) ◽  
pp. 356 ◽  
Author(s):  
Dongbum Kang ◽  
Kyungnam Ko ◽  
Jongchul Huh
Keyword(s):  
South Korea ◽  
Comparative Study ◽  
Jeju Island ◽  
Weibull Parameters

Comparative study on the economic feasibility of nanogrid and microgrid electrification: The case of Jeju Island, South Korea

2020 ◽  
pp. 0958305X2092311
Author(s):  
Jinwoo Bae ◽  
Soojung Lee ◽  
Heetae Kim
Keyword(s):  
Renewable Energy ◽  
South Korea ◽  
Comparative Study ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Economic Feasibility ◽  
Jeju Island ◽  
Hybrid Energy ◽  
Cost Of Energy ◽  
The Government

Due to heavy fuel dependence, the “renewable energy system” idea is an important issue in South Korea. The government of South Korea is endeavoring to convert its energy infrastructure into renewable energy generation. As such, numerous studies have evaluated the economic feasibility of various renewable energy sources in South Korea. This study differs from those studies as it is focused on a smaller scale in terms of self-supporting nanogrid and microgrid energy. The purpose of this study is to determine which type of grid is more economical. To conduct a comparative study on the economic feasibility of nanogrids and microgrids, three substations on Jeju Island were randomly selected. We then suggested two scenarios. The first scenario is <nanogrid>, which changes each substation into a nanogrid, and the second is <microgrid>, which connects the three nanogrids to share electricity. This study identifies the optimal combination of hybrid energy resources using HOMER (hybrid optimization model for electric renewables) software to change the substations into an self-supporting energy nanogrid or microgrid. According to the net present cost and cost of energy results for each scenario through HOMER simulations, the <nanogrid> scenario is more economical than the <microgrid> scenario. However, this study also shows that microgrids can be the better option, depending on the distance between nanogrids. Finally, implications and limitations are discussed in the last section of this paper.

scholarly journals A comparative study of Sargassum horneri Korea and China strains collected along the coast of Jeju Island South Korea: its components and bioactive properties

ALGAE ◽  
2018 ◽  
Vol 33 (4) ◽  
pp. 341-349 ◽  
Author(s):  
Hyun-Soo Kim ◽  
K. K. Asanka Sanjeewa ◽  
I. P. Shanura Fernando ◽  
BoMi Ryu ◽  
Hey-Won Yang ◽  
...  
Keyword(s):  
South Korea ◽  
Comparative Study ◽  
Jeju Island ◽  
Sargassum Horneri ◽  
Bioactive Properties

South Korea’s and Taiwan’s Territorial Disputes with Japan, 1990s to 2018

Asian Survey ◽  
2020 ◽  
Vol 60 (3) ◽  
pp. 583-606
Author(s):  
Christina Lai
Keyword(s):  
South Korea ◽  
Comparative Study ◽  
State Building ◽  
Territorial Disputes ◽  
Maritime Disputes ◽  
Constructivist Perspective ◽  
Senkaku Islands ◽  
Taiwanese Government

South Korea and Taiwan are former Japanese colonies that have undergone similar processes of state-building since WWII. But they have chosen different rhetorical frameworks in their maritime disputes with Japan. In South Korea, negotiating with Japan can be viewed as threatening the country’s independence and pride, whereas in the Taiwanese government, cooperation with Japan is considered mutually beneficial. Why have these two countries taken such divergent stances toward Japan? This article examines the territorial disputes between South Korea and Japan over Dokdo, and between Taiwan and Japan over the Senkaku Islands. It sets forth a rhetorical framework of comparison, and it proposes a constructivist perspective in understanding South Korea’s and Taiwan’s legitimation strategies toward Japan from the late 1990s to 2018. This comparative study suggests that the differences between their legitimation strategies can be traced to their different colonial experiences with Japan.

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