Impedance Modeling and Stability Analysis of All-DC Delivered Offshore Wind Farm

被引：10
作者：
Wang, Miaoyuan [1 ]
Cao, Zequan [1 ]
Liu, Bin [2 ]
Li, Jian [1 ]
Fernando, Tyrone [3 ]
Liu, Xiangdong [1 ]
机构：
[1] Beijing Inst Technol, Sch Automat, Key Lab Intelligent Control & Decis Complex Syst, Beijing 100081, Peoples R China
[2] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
[3] Univ Western Australia, Sch Elect Elect & Comp Engn, Crawley, WA 6009, Australia
来源：
IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS | 2022年 / 12卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Wind farms; Impedance; Inverters; Harmonic analysis; Voltage; Transformers; Wind turbines; All-DC delivered offshore wind farm; DC-port; impedance modeling; permanent magnet synchronous generator (PMSG); LCC-HVDC; CONVERTER;
D O I：
10.1109/JETCAS.2022.3150174
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The all-DC delivered offshore wind farm has great potential in power engineering application due to its advantages in large capacity and long distance delivery. Considering the cost and reliability, the all-DC wind farm can be connected to the onshore grid via the Line-Commuted Converter High Voltage Direct Current (LCC-HVDC) but more interaction may also occur in the form of sub-/super-synchronous oscillations. In order to analyze the stability issue of such offshore wind farm system, the DC-port impedance are firstly established for the aggregated wind farm based on permanent magnet synchronous generator (PMSG) and LCC-inverter by using the harmonic linearization method, where the power outer loop cascaded by the current inner loop of PMSG wind farm and the phase-lock loop (PLL) of the LCC inverter are taken into consideration. Furthermore, the interaction between these two subsystems is analyzed based on the stability criteria through their impedance characteristics. Finally, simulation results are conducted by reproducing the time-domain oscillation in order to evaluate the effectiveness of impedance model for the all-DC delivered offshore wind farm system.
引用
收藏
页码：20 / 28
页数：9
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