Coordinated Control Strategy of Battery Energy Storage System and PMSG-WTG to Enhance System Frequency Regulation Capability

A novel inertial control method based on the torque limit control (TLC) is proposed in this study for the purpose of maximizing the temporary inertial response of permanent magnet synchronous generator-wind turbine generator (PMSG-WTG) over a wide range of variable wind speed conditions. To eliminat...

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Bibliographic Details
Published in:IEEE transactions on sustainable energy 2017-07, Vol.8 (3), p.1330-1343
Main Authors: Wu, Ziping, Gao, David Wenzhong, Zhang, Huaguang, Yan, Shijie, Wang, Xiao
Format: Article
Language:English
Subjects:
Batteries
BESS
Computer simulation
Control
Control systems
Energy consumption
Energy storage
FAST
Frequency control
Generators
inertial response
Mathematical model
Penetration
PMSG
primary frequency regulation
Renewable energy
Restoration
Rotor speed
Rotors
Strategy
Torque
torque limit
Velocity
Wind power
Wind power generation
Wind speed
Wind turbines
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Summary:A novel inertial control method based on the torque limit control (TLC) is proposed in this study for the purpose of maximizing the temporary inertial response of permanent magnet synchronous generator-wind turbine generator (PMSG-WTG) over a wide range of variable wind speed conditions. To eliminate the secondary frequency drop issue during the rotor speed restoration, a small-scale battery energy storage system (BESS) is utilized by adopting the coordinated control strategy between BESS and PMSG-WTG. For the sake of minimizing the excessive use of BESS energy, this control strategy can smoothly discontinue the participation of BESS once the system frequency restores to the specified value. The simulation results conclude that the overall system frequency regulation performance can be significantly improved through such coordination control of BESS, PMSG-WTG, and conventional generators for the enhanced inertial response under different wind power penetration levels as well as variable wind speed conditions. Furthermore, the potential impact of TLC on the mechanical structures of wind turbine throughout the inertial response is investigated by using the CART2-PMSG integrated model.
ISSN:1949-3029
1949-3037
DOI:10.1109/TSTE.2017.2679716