电力建设2018，Vol.39Issue(1)：106-112,7.DOI:10.3969/j.issn.1000-7229.2018.01.014
含可控惯量发电系统的功角暂态稳定分析与惯性控制策略
Power Angle Transient Stability Analysis and Inertial Control Strategy for Power Generation System with Controlled Inertia
摘要
Abstract
The variable speed wind turbines with virtual inertia can improve the system frequency stability,and the power angle transient stability of the power generation system will undergo significant changes due to the change of controllable inertia.Firstly,this paper derives the mathematical model of the interconnected two-regional power grid with wind power at both ends.By theoretically analyzing the influence of wind turbines inertial adjustment on the interconnected system transient energy in two-regional power grid,the system power angle transient stability level is evaluated.Then,for improving the adverse effects of the wind power inertial control on the system power angle transient stability,this paper proposes a variable virtual inertia control strategy of doubly fed induction generator (DFIG) based on transient energy.By rapidly adjusting the inertias at both sides of two-regional power grid,it not only can avoid the power angle instability caused by fast inertial response after failure,but also improve the transient stability of the system.Finally,a simulation model of two-regional interconnected system with high wind power penetration is established to verify the effectiveness of the proposed control strategy.关键词
风电并网/虚拟惯性/暂态稳定/双馈风机(DFIG)/功角失稳Key words
wind power integration/virtual inertia/transient stability/doubly fed induction generator (DFIG)/power angle instability分类
信息技术与安全科学引用本文复制引用
张祥宇,王爽,王毅,付媛..含可控惯量发电系统的功角暂态稳定分析与惯性控制策略[J].电力建设,2018,39(1):106-112,7.基金项目
中央高校基本科研业务费专项资金资助项目(2015MS93) （2015MS93）
国家自然科学基金项目(51507065)Project supported by Fundamental Research Funds for the Central Universities(2015MS93) （51507065）
National Natural Science Foundation of China (51507065) （51507065）
