Inertia Control Strategy of DFIG-Based Wind Turbines Considering Low-Frequency Oscillation Suppression

被引：6
|
作者：
Liu, Haoming [1 ]
Yang, Suxiang [1 ]
Yuan, Xiaoling [1 ]
机构：
[1] Hohai Univ, Coll Energy & Elect Engn, Nanjing 211100, Peoples R China
来源：
ENERGIES | 2022年 / 15卷 / 01期
关键词：
doubly fed induction generator (DFIG)-based wind turbine; inertia control; low-frequency oscillation; modal analysis; damping control; POWER OSCILLATIONS; DAMPING CONTROL; IMPACT; PSS;
D O I：
10.3390/en15010029
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
It has become a basic requirement for wind turbines (WTs) to provide frequency regulation and inertia support. The influence of WTs on the low-frequency oscillation (LFO) of the system will change after adopting inertia control methods. This paper intends to investigate and compare in detail the IC effects on LFO characteristics in two systems with different structures. First, the mechanism of inertia control of doubly fed induction generator (DFIG)-based WTs is analyzed. Then, the small-signal analysis method and modal analysis method are used to study the influence of the inertia control on the LFO characteristics based on the two-machine infinite-bus system and the four-machine two-area system, respectively. The difference in impact rules of IC on LFO is compared in detail. Finally, considering that the inertia control might worsen the LFO in some systems, an improved inertia control strategy of DFIG-based WTs is proposed to suppress the LFO. The simulation results demonstrate that, in systems with different structures, the impact rules of the inertia control parameters on LFO are different. With the improved inertia control strategy, DFIG-based WTs can suppress the LFO of the system and provide inertia support for the system.
引用
收藏
页数：15
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