scholarly journals Enhanced Low-Voltage Ride-Through Coordinated Control for PMSG Wind Turbines and Energy Storage Systems Considering Pitch and Inertia Response

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 212557-212567
Author(s):  
Chunghun Kim ◽  
Wonhee Kim
Keyword(s):  
Energy Storage ◽  
Wind Turbines ◽  
Low Voltage ◽  
Storage Systems ◽  
Coordinated Control ◽  
Energy Storage Systems ◽  
Low Voltage Ride Through ◽  
Inertia Response

scholarly journals Novel Coordinated Control Strategy of BESS and PMSG-WTG for Fast Frequency Response

2021 ◽  
Vol 11 (9) ◽  
pp. 3874
Author(s):  
Hyunwook Kim ◽  
Junghun Lee ◽  
Jaehyeong Lee ◽  
Gilsoo Jang
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Frequency Response ◽  
Control Strategy ◽  
Storage Systems ◽  
Coordinated Control ◽  
Test System ◽  
Rate Of Change ◽  
Energy Storage Systems ◽  
Inertia Response

An increase in inverter-based resources (IBRs) can lower the inertia of a power system, which may adversely affect the power system by causing changes such as a frequency nadir reduction or an increased initial rate of change of frequency (RoCoF). To prevent this, an ancillary service called fast frequency response (FFR) helps the inertia response by using IBRs. The main resources used in FFR are variable-speed wind turbine generators (VSWTGs) or energy storage systems (ESSs), which can respond quickly through converter control. The control is applied to the frequency regulation service faster than the primary frequency response, so the second frequency nadir may fall below the first frequency nadir. This study proposed a novel coordinated control strategy to efficiently utilize energy to improve the frequency nadir through coordinated control of wind turbines based on permanent magnetic synchronous generators (PMSGs) and battery energy storage systems (BESSs). The simulation results confirmed that the two-bus test system was composed of PSCAD/EMTDC, and the frequency nadir increased by utilizing the same amount of energy as in traditional control systems.

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