Coordinated Control of Wind Turbine and Energy Storage System for Reducing Wind Power Fluctuation
Abstract
:1. Introduction
2. Wind Power and ESS Models
2.1. Wind Power Model
2.2. ESS Power Model
2.3. Power System Model
3. Proposed Control Strategy
4. Simulation Results
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
Nomenclature
AGC | Automated Generation Control. |
A | Blade swept area (m) |
Scaling factor for defining de-loaded operation parameter | |
Wind turbine power efficiency coefficient | |
Energy capacity of an ESS (Wh) | |
De-loaded operation parameter | |
k | Parameter for SoC management |
Wind power (W) | |
Filtered wind power (low frequency component) (W) | |
ESS charging power (W) | |
Wind power fluctuation (W) | |
Power variation of conventional generator, i (W) | |
De-loaded power factor indicating reduced power proportion | |
State of Charge (pu) | |
Wind speed variance | |
Average wind speed (m/s) | |
Wind speed variance limit for deciding when de-loaded operation starts | |
Stored energy of an ESS (Wh) | |
air density (kg/m) | |
Grid frequency variation (Hz) | |
Turbine mechanical rotor speed (pu) | |
Tip speed ratio of WT variable | |
WT blade pitch angle (deg) |
Appendix A
Parameter | Value | Unit |
---|---|---|
Sampling time | 1 | s |
Rated power | 2 | MW |
Rated wind speed | 13.8 | m/s |
Average wind speed | 10 & 13 | m/s |
Wind speed random variance | 0.1 to 0.5 | |
Max.power coeff. | 0.4382 | |
Optimal tip speed ratio | 6.32 | |
Blade radius | 30 | m |
Air density | 1.225 | kg/m |
0.51 | ||
0.2 | ||
555 (1 pu) | Wh |
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Kim, C.; Muljadi, E.; Chung, C.C. Coordinated Control of Wind Turbine and Energy Storage System for Reducing Wind Power Fluctuation. Energies 2018, 11, 52. https://doi.org/10.3390/en11010052
Kim C, Muljadi E, Chung CC. Coordinated Control of Wind Turbine and Energy Storage System for Reducing Wind Power Fluctuation. Energies. 2018; 11(1):52. https://doi.org/10.3390/en11010052
Chicago/Turabian StyleKim, Chunghun, Eduard Muljadi, and Chung Choo Chung. 2018. "Coordinated Control of Wind Turbine and Energy Storage System for Reducing Wind Power Fluctuation" Energies 11, no. 1: 52. https://doi.org/10.3390/en11010052