Power Smoothing Control Using Spline Function in Photovoltaic Generation System

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

Abstract

This paper proposes a novel power smoothing control method using a spline function for a photovoltaic generation system. The spline function is sequentially created using the preceding average values of PV power. The command value of power smoothing control is determined by extrapolating the obtained spline function, which represents the long-term fluctuation components of PV power. The smoothing effect is evaluated by calculating the power in the targeted frequency band of the power flowing backward to the power grid. The proposed method is verified with 153 days of data measured in the PV system rated 1.75 MW. As a result, the smoothing effect was 51.8% with the proposed method in the case that the parameter of section time was 300 s. The rated capacity of energy storage system was 106 kWh. Then, it was indicated that the smoothing effect was increased and the short-term fluctuation of power flowing back to the power grid was reduced by setting the section time longer. Finally, the proposed method was compared with the power smoothing control using simple MA.

Original languageEnglish
Title of host publication2019 IEEE Decentralized Energy Access Solutions Workshop, DEAS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728107950
DOIs
Publication statusPublished - Feb 2019
Event2019 IEEE Decentralized Energy Access Solutions Workshop, DEAS 2019 - Atlanta, United States
Duration: Feb 5 2019Feb 7 2019

Publication series

Name2019 IEEE Decentralized Energy Access Solutions Workshop, DEAS 2019

Conference

Conference2019 IEEE Decentralized Energy Access Solutions Workshop, DEAS 2019
CountryUnited States
CityAtlanta
Period2/5/192/7/19

Keywords

  • energy storage
  • filter effect
  • photovoltaic generation
  • power smoothing control
  • spline function

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Development

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  • Cite this

    Takahashi, A., Kajitani, T., & Funabiki, S. (2019). Power Smoothing Control Using Spline Function in Photovoltaic Generation System. In 2019 IEEE Decentralized Energy Access Solutions Workshop, DEAS 2019 [8758737] (2019 IEEE Decentralized Energy Access Solutions Workshop, DEAS 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/DEAS.2019.8758737