中国电机工程学报2024，Vol.44Issue(7)：2641-2654,后插11,15.DOI:10.13334/j.0258-8013.pcsee.222084
采用可控负荷灵敏度的DFIG并网电力系统低频振荡模式抑制
Damping to Low Frequency Oscillation Modes in DFIG-integrated Power System Based on Sensitivity to Controllable Loads
摘要
Abstract
Integration of doubly-fed induction generators(DFIGs)intensifies low frequency oscillation(LFO).With power market and intelligent device,controllable loads may participate into damping control.Thus the damping ratios of the dangerous modes are affected by loads,which adds the difficulty of analytical expression to the eigen-sensitivity.The existing constant-impedance model does not show the impact of the composite load on the small-signal stability.The induction motor model is accurate but difficult to differentiate,and it is not suitable for the small signal stability analysis.In this paper,the ZIP load model is applied to derive the system state equation and avoid modeling difference in power flow and small-signal stability analysis.With the bridge of the sensitivity of power flow solution to the loads,an analytical model of the sensitivity of the damping ratios of the dangerous modes to the loads is proposed.The quasi-proportional resonance(quasi-PR)control is applied to adjust the load,and the sensitivity of the damping ratio is modified accordingly to improve the robustness of the damping control.The simulation results verify the control effect of the proposed algorithm.关键词
双馈感应发电机/低频振荡/阻尼控制/ZIP负荷/准比例谐振控制/灵敏度Key words
doubly-fed induction generators/low frequency oscillation/damping control/ZIP load/quasi-PR control/sensitivity分类
信息技术与安全科学引用本文复制引用
李生虎,方天扬,叶剑桥..采用可控负荷灵敏度的DFIG并网电力系统低频振荡模式抑制[J].中国电机工程学报,2024,44(7):2641-2654,后插11,15.基金项目
国家自然科学基金项目(51877061).Project Supported by National Natural Science Foundation of China(51877061). （51877061）
