Seasonal shifting of surplus renewable energy in a power system located in a cold region

Jorge Morel; Yuta Morizane; Shin'ya Obara; Jorge Morel; Yuta Morizane; Shin'ya Obara

doi:10.3934/energy.2014.4.373

AIMS Energy

2014, Volume 2, Issue 4: 373-384. doi: 10.3934/energy.2014.4.373

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Research article Special Issues

Seasonal shifting of surplus renewable energy in a power system located in a cold region

Department of Electrical and Electronic Engineering, Kitami Institute of Technology, Kitami City, Hokkaido, Japan

Received: 16 June 2014 Accepted: 26 September 2014 Published: 11 October 2014

The Fukushima nuclear disaster in 2011 changed Japan's strategy for reducing CO₂ emissions. The government is now placing more emphasis on the development of nonCO₂-emitting distributed generation systems such as wind, solar, and tidal power to reduce greenhouse gas emissions and guarantee electricity supply in the case of a natural disaster. This paper proposes a strategy for the exploitation of wind, solar, and tidal resources in a cold region in Japan by utilizing surplus energy from the summer and spring during winter. It also aims to determine the most favorable energy mix of these renewable sources and storage system types. The study is performed by calculating hourly demand and renewable energy supply for the city in one year, which is based on actual data of demand, solar irradiation, wind speeds, and tidal current speeds. The costs of the components of the renewable power plants and storage systems are considered, and different proportions of generation outputs are evaluated with different types of storage systems. According to results, the configuration containing the hydrogen storage system using organic chemical hydride methylcyclohexane (OCHM) is the most economical but is still more expensive than one using a conventional generation system. Moreover, we confirm that the cost of CO₂ emissions is the key element for leveling the playing field between conventional and renewable generation from an economic perspective. The cost of CO₂ emissions to public health as well as those costs related to the interruption of services during a catastrophe must be carefully calculated with other issues from conventional power projects to perform a precise comparative evaluation between both types of generation systems.
- Wind power,
- solar power,
- tidal power,
- storage system,
- microgrid,
- seasonal energy shifting,
- cold region
Citation: Jorge Morel, Yuta Morizane, Shin'ya Obara. Seasonal shifting of surplus renewable energy in a power system located in a cold region[J]. AIMS Energy, 2014, 2(4): 373-384. doi: 10.3934/energy.2014.4.373

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Abstract

The Fukushima nuclear disaster in 2011 changed Japan's strategy for reducing CO₂ emissions. The government is now placing more emphasis on the development of nonCO₂-emitting distributed generation systems such as wind, solar, and tidal power to reduce greenhouse gas emissions and guarantee electricity supply in the case of a natural disaster. This paper proposes a strategy for the exploitation of wind, solar, and tidal resources in a cold region in Japan by utilizing surplus energy from the summer and spring during winter. It also aims to determine the most favorable energy mix of these renewable sources and storage system types. The study is performed by calculating hourly demand and renewable energy supply for the city in one year, which is based on actual data of demand, solar irradiation, wind speeds, and tidal current speeds. The costs of the components of the renewable power plants and storage systems are considered, and different proportions of generation outputs are evaluated with different types of storage systems. According to results, the configuration containing the hydrogen storage system using organic chemical hydride methylcyclohexane (OCHM) is the most economical but is still more expensive than one using a conventional generation system. Moreover, we confirm that the cost of CO₂ emissions is the key element for leveling the playing field between conventional and renewable generation from an economic perspective. The cost of CO₂ emissions to public health as well as those costs related to the interruption of services during a catastrophe must be carefully calculated with other issues from conventional power projects to perform a precise comparative evaluation between both types of generation systems.

References

[1]	Ministry of Economy, Trade and Industry (METI), Annual Report on Energy, Outline of the FY2012 (Energy White Paper 2013). Ministry of Economy, Trade and Industry (METI), 2013. Available from: http://www.meti.go.jp/english/report/index_whitepaper.html#energy.
[2]	New Energy and Industrial Technology Development Organization (NEDO), Demonstration Research on Japan's First Offshore Wind Turbines. New Energy and Industrial Technology Development Organization (NEDO), 2013. Available from:http://www.nedo.go.jp/english/introducing_project_02.html.
[3]	Japan Smart Community Alliance, The Operational Experience of Sendai Microgrid in the Aftermath of the Devastating Earthquake: A Case Study. New Energy and Industrial Technology Development Organization (NEDO), 2013. Available from: https://www.smart-japan.org/english/reference/l3/Vcms3_00000020.html.
[4]	Ma C, Zhang X, Zhang G, et al. (2013) Global utilization of solar energy and development of solar cell materials. Adv Mater Res 608: 151-154.
[5]	Zhang X, Ma C, Chen W, et al. (2013) Global utilization and development of wind energy. Adv Mater Res 608: 584-587.
[6]	Obara S (2008) Development of a dynamic operational scheduling algorithm for an independent micro-grid with renewable energy. J Therm Sci Tech-Jpn 3: 474-485. doi: 10.1299/jtst.3.474
[7]	U.S. Department of Energy, Microgrids at Berkeley Laboratory, Nagoya 2007 Symposium on Microgrids, Overview of Micro-grid R&D in Japan. New Energy and Industrial Technology Development Organization (NEDO), 2007. Available from: http://der.lbl.gov/sites/der.lbl.gov/files/nagoya_morozumi.pdf.
[8]	Obara S, Morizane Y, Morel J (2013) Economic efficiency of a renewable energy independent microgrid with energy storage by a sodium-sulfur battery or organic chemical hydride. Int J Hydrogen Energ 38: 8888-8902. doi: 10.1016/j.ijhydene.2013.05.036
[9]	Obara S, Morel J (2014) Microgrid composed of three or more SOFC combined cycles without accumulation of electricity. Int J Hydrogen Energ 39: 2297-2312. doi: 10.1016/j.ijhydene.2013.11.102
[10]	Obara S, Kawae O, Morizane Y, et al. (2013) The facility planning and electric power quality of the Saroma Lake green microgrid by the interconnection of tidal power generation, PV and SOFC. J Power Energ Syst 7: 1-17. doi: 10.1299/jpes.7.1
[11]	Obara S, Kawae O, Kawai M, et al. (2013) A study of the installed capacity and electricity quality of a fuel cell-independent microgrid that uses locally produced energy for local consumption. Int J Energy Res 37: 1764-1783. doi: 10.1002/er.2990
[12]	Obara S, Kawai M, Kawae O, et al. (2013) Operational planning for an independent microgrid containing tidal power generators, SOFCs, and photovoltaics. Appl Energ 102: 1343-1357. doi: 10.1016/j.apenergy.2012.07.005
[13]	Japan Meteorological Agency. Available from: http://www.jma.go.jp/jma/indexe.html. (In Japanese)
[14]	Hokkaido Electric Power Company, Main Infrastructure. Available from: http://www.hepco.co.jp/corporate/ele_power/ele_power.html. (In Japanese)
[15]	New Energy and Energy Saving Vision for Kitami City, 2012. (In Japanese)
[16]	Oxera Consulting Ltd., Discount rates for low-carbon and renewable generation technologies, 2011. Available from: http://www.oxera.com/Oxera/media/Oxera/downloads/reports/Oxera-report-on-low-carbon-discount-rates.pdf?ext=.pdf.
[17]	Trading Economics, Japan Inflation Rate 1958-2014, 2014. Available from: http://www.tradingeconomics.com/japan/inflation-cpi.
[18]	Ernst&Young, Black&Veath, Cost of and financial support for wave, tidal stream and tidal range generation in the UK, 2010. Available from: http://webarchive.nationalarchives.gov.uk/20121205174605/http:/decc.gov.uk/assets/decc/what%20we%20do/uk%20energy%20supply/energy%20mix/renewable%20energy/explained/wave_tidal/798-cost-of-and-finacial-support-for-wave-tidal-strea.pdf.
[19]	National Renewable Energy Laboratory (NREL), Distributed Generation Renewable Energy Estimate of Costs, 2013. Available from: http://www.nrel.gov/analysis/tech_lcoe_re_cost_est.html.The Economists, Companies and Emissions — Carbon Copy, 2013.
[20]	Available from: http://www.economist.com/news/business/21591601-some-firms-are-preparing-carbon-price-would-make-big-difference-carbon-copy.

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