Impact of electric battery's degradation on economic and energy saving characteristics of residential photovoltaic system

Akira Yoshida, Tomikazu Sato, Yoshiharu Amano, Koichi Ito

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In Japan a feed-in tariff scheme has promoted the utilization of photovoltaic power generators in combination with electric batteries. Although many researchers have assessed the operations of grid-connected photovoltaic systems with electric batteries, little attention has been paid to the impact of the electric batteries' degradation characteristics. This paper presents an evaluation of the operation of a grid-connected photovoltaic/electric battery system in a house from energy saving and economy viewpoints. We constructed a long-term operational optimization model considering the degradation characteristics of the electric battery. This model contains two objective functions: energy saving and operating cost. We set a scenario of power rate and photovoltaic/battery system configurations. In order to reveal the optimal operational strategy of the photovoltaic/battery system, the multi-objective optimization problem was solved. As a result, pareto optimal solutions were obtained, and trade-off relationships between economy and energy saving are presented. In this study, the utilization of the grid-connected photovoltaic system with an electric battery was expected to be effective in an energy saving priority operation.

Original languageEnglish
Title of host publicationProceedings of the 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2014
EditorsRon Zevenhoven
PublisherAabo Akademi University
ISBN (Electronic)9781634391344
Publication statusPublished - 2014 Jan 1
Event27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2014 - Turku, Finland
Duration: 2014 Jun 152014 Jun 19

Publication series

NameProceedings of the 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2014

Conference

Conference27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2014
CountryFinland
CityTurku
Period14/6/1514/6/19

Keywords

  • Battery
  • Energy storage
  • Optimization
  • Solar energy
  • System engineering

ASJC Scopus subject areas

  • Engineering(all)
  • Energy(all)

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  • Cite this

    Yoshida, A., Sato, T., Amano, Y., & Ito, K. (2014). Impact of electric battery's degradation on economic and energy saving characteristics of residential photovoltaic system. In R. Zevenhoven (Ed.), Proceedings of the 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2014 (Proceedings of the 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2014). Aabo Akademi University.