scholarly journals Theoretical Study on Control Strategy of Grid-Connected High Voltage Ride Through in Doubly-Fed Wind Farm

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 107453-107464 ◽  
Author(s):  
Xinyu Liu ◽  
Xianwei Li ◽  
Donghong Jiao
Keyword(s):  
High Voltage ◽  
Control Strategy ◽  
Wind Farm ◽  
Theoretical Study ◽  
Doubly Fed

A Control Strategy for Transient Stability Improvement of Doubly-Fed Wind Power Generation System

2014 ◽  
Vol 953-954 ◽  
pp. 337-341
Author(s):  
Chao Xu ◽  
Jin Ling Lu ◽  
Jin Long Zhou
Keyword(s):  
Control Strategy ◽  
Wind Farm ◽  
Transient Stability ◽  
Reactive Power ◽  
System Stability ◽  
Control Loop ◽  
Reactive Control ◽  
Voltage Control Strategy ◽  
Transient Voltage ◽  
Doubly Fed

A novel inverter control strategy to enhance the transient stability of grid-connected wind farm based on doubly-fed induction generator (DFIG) is presented. Adding transient angle control strategy in the rotor side converter active control loop, this can dissipate the system unbalancing energy and restrain the system oscillations by the variation of wind turbine speed. Adding transient voltage control strategy in reactive control loop, this can provide fast reactive power compensation and support the restoration and reconstruction of the grid voltage when fault occurred. The control strategy which can improve the transient Angle stability and transient voltage stability at the same time is put forward. Finally, a testing system including a DFIG-based wind farm is realized using DigSILENT/Power Factory, the strategy validation and the contribution to power system stability enhancement are verified by simulation.

Coordinated Reactive Power and Voltage Control Based on Doubly-Fed Wind Farm Cluster

2014 ◽  
Vol 1070-1072 ◽  
pp. 224-227
Author(s):  
Li Lin ◽  
Kai Li
Keyword(s):  
Control Strategy ◽  
Voltage Stability ◽  
Wind Farm ◽  
Optimal Allocation ◽  
Reactive Power ◽  
Coordinated Control ◽  
Current Control ◽  
Separate Control ◽  
Point Of Common Coupling ◽  
Doubly Fed

Current control strategy of reactive power and voltage for wind power integration is separate control of single wind farm (WF), which cannot achieve the optimal allocation of reactive power and is not beneficial for the optimization of voltage stability and network loss. In this paper, a coordinated control strategy of reactive power and voltage for wind farm cluster is proposed, which takes the voltage stability at point of common coupling (PCC) and economic operation as the optimization goals. The coordinated control strategy is realized through the platform of Cybercontrol industrial configuration, and the application testing verifies the effectiveness of the proposed strategy.

scholarly journals Recurrence of Sub-Synchronous Oscillation Accident of Hornsea Wind Farm in UK and Its Suppression Strategy

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7685
Author(s):  
Xiangwu Yan ◽  
Wenfei Chang ◽  
Sen Cui ◽  
Aazim Rassol ◽  
Jiaoxin Jia ◽  
...  
Keyword(s):  
Power System ◽  
Wind Power ◽  
Control Strategy ◽  
Wind Farm ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Synchronous Oscillation ◽  
Wind Power System ◽  
Doubly Fed ◽  
Grid Side

A large-scale power system breakdown in the United Kingdom caused blackouts in several important cities, losing about 3.2 percent of the load and affecting nearly 1 million power users on 9 August 2019. On the basis of the accident investigation report provided by the UK National Grid, the specific reasons for the sub-synchronous oscillation of Hornsea wind farm were analyzed. The Hornsea wind power system model was established by MATLAB simulation software to reproduce the accident. To solve this problem, based on the positive and negative sequence decomposition, the control strategy of grid-side converter of doubly-fed induction generator is improved to control the positive sequence voltage of the generator terminal, which can quickly recover the voltage by compensating the reactive power at the grid side. Consequently, the influence of the fault is weakened on the Hornsea wind farm system, and the sub-synchronous oscillation of the system is suppressed. The simulation results verify the effectiveness of the proposed control strategy in suppressing the sub-synchronous oscillation of weak AC wind power system after being applied to doubly-fed induction generator, which serves as a reference for studying similar problems of offshore wind power.

scholarly journals Optimization Control Strategy for Large Doubly-Fed Induction Generator Wind Farm Based on Grouped Wind Turbine

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4848
Author(s):  
Shijia Zhou ◽  
Fei Rong ◽  
Xiaojie Ning
Keyword(s):  
Control Strategy ◽  
Power Output ◽  
Wind Farm ◽  
Reactive Power ◽  
Optimization Problems ◽  
Active Power ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Optimization Control ◽  
Doubly Fed

This paper proposes a grouped, reactive power optimization control strategy to maximize the active power output of a doubly-fed induction generator (DFIG) based on a large wind farm (WF). Optimization problems are formulated based on established grouped loss models and the reactive power limits of the wind turbines (WTs). The WTs in the WF are grouped to relieve computational burden. The particle swarm optimization (PSO) algorithm is applied to optimize the distribution of reactive power among groups, and a proportional control strategy is used to distribute the reactive power requirements in each group. Furthermore, the proposed control strategy optimizes the reactive power distribution between the stator and the grid side converter (GSC) in each WT. The proposed control strategy greatly reduces the number of variables for optimization, and increases the calculation speed of the algorithm. Thus, the control strategy can not only increase the active power output of the WF but also enable the WF to track the reactive power dispatching instruction of the power grid. A simulation of the DFIG WF is given to verify the effectiveness of the proposed control strategy at different wind speeds and reactive power references.

scholarly journals Advanced control strategy and its controllable area for doubly fed wind farm integrated into power systems with VSC-HVDC transmission under grid fault

2017 ◽  
Vol 2017 (13) ◽  
pp. 1170-1175 ◽  
Author(s):  
Jinxin Ouyang ◽  
Mengyang Li ◽  
Ting Tang ◽  
Di Zheng ◽  
Rui Yu ◽  
...  
Keyword(s):  
Power Systems ◽  
Control Strategy ◽  
Wind Farm ◽  
Hvdc Transmission ◽  
Advanced Control ◽  
Doubly Fed

Control and Operational Characteristics Research on Multi-Terminal HVDC for Wind Power Transmission

2015 ◽  
Vol 1092-1093 ◽  
pp. 248-253
Author(s):  
Han Ping Xu ◽  
Xia Chen ◽  
Wang Xiang ◽  
Jin Yu Wen
Keyword(s):  
Wind Power ◽  
Control Strategy ◽  
Wind Farm ◽  
Power Transmission ◽  
Wind Farms ◽  
Stable Operation ◽  
Static Synchronous Compensator ◽  
Long Distance ◽  
Operational Characteristics ◽  
Doubly Fed

This paper proposed the line-commutated converter based multi-terminal HVDC (LCC-MTDC) combining with the static synchronous compensator (STATCOM) for doubly-fed induction generator (DFIG) based wind farms integration with bulk wind power transmission over long distance. This paper is aimed at the control strategy design and the operational characteristics research of LCC-MTDC for wind power transmission. Then, the control methodologies of the complex integration system are addressed from two aspects: the MTDC and the wind farm. The coordination control strategy is developed to ensure the stable operation of the MTDC system and the wind farm controller is designed to capture the maximum wind power and ensure all the wind power transferred into the MTDC. Simulation results in PSCAD/EMTDC show that LCC-MTDC could achieve desirable operational performances with the control strategy proposed.

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