Economic Evaluation of DC Smart House Groups Considering Electric Vehicle Operation Patterns
Smart houses, which have installed on-site distributed generators such as photovoltaics and batteries and manage their own energy usage using information technology, are being studied and developed around the world. Most of the facilities in a smart house are operated as DC systems; however, conventional supply systems are AC. Moreover, the number of electric vehicles (EV), which also need DC power, have been increasing on the residential side. Therefore, a DC power supply system for smart houses can reduce the number of power converters, conversion losses, and electric charges. The initial and running costs of DC- and AC-based smart houses were calculated under various conditions in this paper. It was concluded that DC-based smart houses have lower costs than AC-based ones regardless of the AC/DC ratio in the load and in the use of EV.
S. Gaurav, C. Birla, A. Lamba, S. Umashanka rand S. Ganesan, “Energy Management of PV - Battery Based Microgrid System”, Procedia Technology, Vol.21, pp.103-111, 2015. DOI: 10.1016/j.protcy.2015.10.016
Y. Yoldas, A. Onen, S. M. Muyeen, A. V. Vasilakos and I. Alana, “Enhancing smart grid with microgrids: Challenges and opportunities”, Renewable and Sustainable Energy Reviews, Vol.72, pp.205-214, 2017. DOI: 10.1016/j.rser.2017.01.064
I. Kurihara, “Power System Technology to Realize Smart Grid”, IEEJ Transactions on Power and Energy, Vol.133, No.4, pp.298-301, 2013(in Japanese).
M. Shakeri, M. Shayestegan, S. M. Salim Reza, I. Yahya, B. Bais, M. Akhtaruzzaman, K. Sopiand and N. Amin, “Implementation of a novel home energy management system (HEMS) architecture with solar photovoltaic system as supplementary source”, Renewable Energy, Vol.125, pp.108- 120, 2018. DOI: 10.1016/j.renene.2018.01.114
H. Keiichi, “Trends of DC Power Technologies and their Applications”, IEEJ Transactions on Power and Energy, Vol.131, No.4, pp.358-361, 2011. DOI: 10.1541/iee- jpes.131.358
K. Tanaka, A. Yoza, K. Ogimi, A. Yona, T. Senjyu, T. Fun- abashi and C. H. Kim, “Optimal operation of DC smart house system by controllable loads based on smartgrid topology”, Renewable Energy, Vol.39, pp.132-139, 2012. DOI: 10.1016/j.renene.2011.07.026
K. Shimomachi, R. Hara and H. Kita, “Comparison between DC and AC Microgrid Systems Considering Ratio of DC Load”, 2015 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), pp.1-4, 2015. DOI: 10.1109/APPEEC.2015.7380918
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