Design of Hybrid Energy Storage for Photovoltaic Power Fluctuation Smoothing Based on Frequency Analysis

DOI

10.2991/ifeesd-16.2016.170How to use a DOI?

Keywords

PV system, hybrid energy storage system, fluctuation smoothing, frequency analysis

Abstract

A proper design of energy storage system (ESS) can effectively smooth the photovoltaic (PV) output power fluctuation, lower the cost, as well as improve power quality and stability. According to the response characteristics of different energy storage equipment, in this paper, a hybrid ESS is applied to make better use of each energy storage (ES) capacity and lower system cost. A sizing method of battery and supercapacitor is proposed based on frequency analysis. Fast Fourier transform (FFT) method is applied for analyzing the spectrum of balancing power, dividing the compensation frequency band for each ES device, and filtering. Then the power capacity and energy capacity of each ES can be determined by conducting inverse FFT within certain frequency range. Through the proposed method, the least cost ESS solution will be determined to smooth out the PV output fluctuation under a worst case scenario.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Li Lin
AU  - Ruirui Yang
AU  - David Yu
PY  - 2016/05
DA  - 2016/05
TI  - Design of Hybrid Energy Storage for Photovoltaic Power Fluctuation Smoothing Based on Frequency Analysis
BT  - Proceedings of the 2016 International Forum on Energy, Environment and Sustainable Development
PB  - Atlantis Press
SP  - 954
EP  - 959
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesd-16.2016.170
DO  - 10.2991/ifeesd-16.2016.170
ID  - Lin2016/05
ER  -