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Operation Strategy for a Power Grid Supplied by 100% Renewable Energy at a Cold Region in Japan

Journal of Sustainable Development of Energy, Water and Environment Systems
Volume 2, Issue 3, pp 270-283
DOI: http://dx.doi.org/10.13044/j.sdewes.2014.02.0022
Jorge Morel , Shin’ya Obara, Yuta Morizane
Department of Electrical and Electronic Engineering, Kitami Institute of Technology, Japan

This paper presents an operation strategy for a power system supplied from 100% renewable energy generation in Kitami City, a cold region in Japan. The main goal of this work is the complete elimination of the CO2 emissions of the city while keeping the power frequency within prescribed limits. Currently, the main energy related issue in Japan is the reduction of CO2 emissions without depending on nuclear generation. Also, there is a need for the adoption of distributed generation architecture in order to permit local autonomous operation of the system by the local generation of power. As a solution, this paper proposes a strategy to eliminate CO2 emissions that considers digital simulations using past hourly meteorological data and demand for one year. Results shows that Kitami City can be supplied entirely by renewable generation, reducing its CO2 emission to zero while keeping the quality of its power grid frequency within permitted limits.

Keywords: Renewable energy, Wind power, Solar power, Tidal power, Storage system, Frequency control, Smart grid

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