A Control Strategy for Smoothing Active Power Fluctuation of Wind Farm with Flywheel Energy Storage System Based on Improved Wind Power Prediction Algorithm

J. C. Wang, X. R. Wang

School of Electrical Engineering, Southwest Jiaotong University, Chengdu, China.

DOI: 10.4236/epe.2013.54B075                

Abstract

The fluctuation of active power output of wind farm has many negative impacts on large-scale wind power integration into power grid. In this paper, flywheel energy storage system (FESS) was connected to AC side of the doubly-fed induction generator (DFIG) wind farm to realize smooth control of wind power output. Based on improved wind power prediction algorithm and wind speed-power curve modeling, a new smooth control strategy with the FESS was proposed. The requirement of power system dispatch for wind power prediction and flywheel rotor speed limit were taken into consideration during the process. While smoothing the wind power fluctuation, FESS can track short-term planned output of wind farm. It was demonstrated by quantitative analysis of simulation results that the proposed control strategy can smooth the active power fluctuation of wind farm effectively and thereby improve power quality of the power grid.

Keywords

Wind Power Generation; FESS; Wind Power Prediction; Improved Time-series Algorithm; Active Power Smooth Control

Conflicts of Interest

The authors declare no conflicts of interest.

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