Self-Synchronizing Control and Frequency Response of Offshore Wind Farms Connected to Diode Rectifier Based HVDC System

被引:23
作者
Xiao, Huangqing [1 ]
Huang, Xiaowei [1 ]
Huang, Ying [2 ]
Liu, Yilu [3 ]
机构
[1] South China Univ Technol, Sch Elect Power Engn, Guangzhou 510641, Peoples R China
[2] China Southern Power Grid, Elect Power Res Inst, Guangzhou 510530, Peoples R China
[3] Univ Tennessee, Knoxville, TN 37996 USA
关键词
Voltage control; HVDC transmission; Frequency control; Rectifiers; Reactive power; Wind farms; Synchronization; Asynchronous AC grids; automatic generation control; frequency regulation; inertia; MTDC;
D O I
10.1109/TSTE.2022.3170717
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Light-duty offshore wind power system has been a research hotspot in recent years. The diode rectifier based HVDC scheme is a promising solution and has attracted more and more attention. In this paper, a self-synchronizing control for offshore wind farms connected to diode rectifier based HVDC system is proposed. The active power of each wind turbine is controlled by regulating the amplitude of the AC voltage, while the reactive power is used to adjust the offshore frequency. The proposed control is a decentralized scheme. Thus, no communication network or GPS is required and only the local information is used in the control system. The synchronization of wind turbines is achieved by the proposed self-synchronizing frequency control instead of using phase-lock loop. Besides, in order to make offshore wind farms provide necessary frequency support to the onshore power system, a communication-less frequency regulation scheme with artificial coupling method is proposed. The feasibility and effectiveness of the proposed self-synchronizing control and frequency regulation scheme are verified through simulation studies in PSCAD/EMTDC platform.
引用
收藏
页码:1681 / 1692
页数:12
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