scholarly journals An Optimal Reactive Power Control Strategy for a DFIG-Based Wind Farm to Damp the Sub-Synchronous Oscillation of a Power System

Energies ◽  
2014 ◽  
Vol 7 (5) ◽  
pp. 3086-3103 ◽  
Author(s):  
Bin Zhao ◽  
Hui Li ◽  
Mingyu Wang ◽  
Yaojun Chen ◽  
Shengquan Liu ◽  
...  
Keyword(s):  
Power System ◽  
Power Control ◽  
Control Strategy ◽  
Wind Farm ◽  
Reactive Power ◽  
Synchronous Oscillation ◽  
Reactive Power Control

scholarly journals Enhancement of Power System Transient Stability by Active and Reactive Power Control of Variable Speed Wind Generators

2020 ◽  
Vol 10 (24) ◽  
pp. 8874
Author(s):  
Masaki Yagami ◽  
Masanori Ichinohe ◽  
Junji Tamura
Keyword(s):  
Kinetic Energy ◽  
Power System ◽  
Power Control ◽  
Wind Farm ◽  
Transient Stability ◽  
Reactive Power ◽  
Renewable Energy Sources ◽  
Variable Speed ◽  
Pv System ◽  
Reactive Power Control

This paper proposes a novel control method for enhancing transient stability by using renewable energy sources (RES). The kinetic energy accumulated in a rotor of variable speed wind generator (VSWG) is proactively used as the active power source, which is controlled according to the frequency measured at the wind farm. In addition, coordinated reactive power control according to the grid voltage is also carried out to more effectively use the kinetic energy of the VSWG. The effects of the proposed control system were evaluated by simulation analyses performed using a modified IEEE nine-bus power system network made up of synchronous generators (SGs), a photovoltaic (PV) system and a VSWG-based wind farm. Furthermore, the coordinated reactive power control between the VSWG and PV system was also demonstrated.

scholarly journals MPC Based Coordinated Active and Reactive Power Control Strategy of DFIG Wind Farm with Distributed ESSs

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3906
Author(s):  
Hesong Cui ◽  
Xueping Li ◽  
Gongping Wu ◽  
Yawei Song ◽  
Xiao Liu ◽  
...  
Keyword(s):  
Power Control ◽  
Control Strategy ◽  
Wind Farm ◽  
Reactive Power ◽  
Stable Operation ◽  
Reactive Power Control ◽  
Active And Reactive Power ◽  
Control Scheme ◽  
Optimal Control Scheme ◽  
Grid Side

The ESS is considered as an effective tool for enhancing the flexibility and controllability of a wind farm, and the optimal control scheme of a wind farm with distributed ESSs is vital to the stable operation of wind power generation. In this paper, a coordinated active and reactive power control strategy based on model predictive control (MPC) is proposed for doubly fed induction generator (DFIG)-based wind farm (WF) with distributed energy storage systems (ESSs). The proposed control scheme coordinates the active and reactive power output among DFIG wind turbines (WTs), grid-side converters (GSCs), and distributed ESSs inside the WF, and the aim is to decrease fatigue loads of WTs, make the WT terminal voltage inside the extent practicable, and take the WF economic operation into consideration. Moreover, the best reactive power references of DFIG stator and GSC are produced independently based on their dynamics. At last, the control scheme generates optimal power references for all ESS to make the SOC of each ESS converge to their average state. With the distributed ESSs, the WF controller regulates the WTs inside WF more flexibly. A WF composed of 10 DFIG WTs was utilized to verify the control performance of the proposed coordinated active and reactive power control strategy.

scholarly journals An Anti-Fluctuation Compensator Design and Its Control Strategy for Wind Farm System

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6413
Author(s):  
Feng-Chang Gu ◽  
Hung-Cheng Chen
Keyword(s):  
Power Control ◽  
Control Strategy ◽  
Large Scale ◽  
Wind Farm ◽  
Reactive Power ◽  
Wind Farms ◽  
Voltage Regulation ◽  
Current Control ◽  
Reactive Power Control ◽  
Control Scheme

Large-scale wind farms in commercial operations have demonstrated growing influence on the stability of an electricity network and the power quality thereof. Variations in the output power of large-scale wind farms cause voltage fluctuations in the corresponding electrical networks. To achieve low-voltage ride-through capability in a doubly fed induction generator (DFIG) during a fault event, this study proposes a real-time reactive power control strategy for effective DFIG application and a static synchronous compensator (STATCOM) for reactive power compensation. Mathematic models were developed for the DFIG and STATCOM, followed by the development of an indirect control scheme for the STATCOM based on decoupling dual-loop current control. Moreover, a real-world case study on a commercial wind farm comprising 23 DFIGs was conducted. The voltage regulation performance of the proposed reactive power control scheme against a fault event was also simulated. The simulation results revealed that enhanced fault ride-through capability and prompt recovery of the output voltage provided by a wind turbine generator could be achieved using the DFIG along with the STATCOM in the event of a three-phase short-circuit fault.

scholarly journals Reactive power control strategy of DFIG-based wind farm to mitigate SSO

2017 ◽  
Vol 2017 (13) ◽  
pp. 1290-1294 ◽  
Author(s):  
Xi Wu ◽  
Yajing Guan ◽  
Wei Ning
Keyword(s):  
Power Control ◽  
Control Strategy ◽  
Wind Farm ◽  
Reactive Power ◽  
Reactive Power Control

scholarly journals Wind farm HVRT capability improvement based on coordinated reactive power control strategy

2017 ◽  
Vol 2017 (13) ◽  
pp. 756-761 ◽  
Author(s):  
Yuandong Zhang ◽  
Qing Li ◽  
Jinping Zhang ◽  
Shiyao Qin
Keyword(s):  
Power Control ◽  
Control Strategy ◽  
Wind Farm ◽  
Reactive Power ◽  
Reactive Power Control ◽  
Capability Improvement
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